JPH0150478B2 - - Google Patents

Description

[Detailed description of the invention]

INDUSTRIAL APPLICATION FIELD The present invention relates to a device for removing chlorine contained in water supplied to a water heater, and relates to a device for removing chlorine contained in water supplied to a water heater.
Rubber hoses are often used in the water channels of the hot water storage tanks and collectors of natural circulation and forced circulation solar water heaters, and in the water supply and hot water channels of water heaters with electric, gas, or oil heat sources. This prevents deterioration caused by chlorine. Conventional structure and its problems Rubber hoses normally used for this type of function are resistant to sunlight and ultraviolet rays, and in order to strengthen the general characteristics of a rubber hose over a long period of time,
A considerable amount of carbon is added to the material formulation.
This carbon gradually becomes exposed to chlorine in the hot water supply over a long period of time, and when it freezes in the winter, it comes off the inside of the hose all at once and mixes into the hot water supply, causing a problem that stains the water black. Purpose of the Invention The present invention was made in view of this problem, and an object of the present invention is to provide a chlorine removal device that can suppress deterioration of the rubber hose itself. Structure of the Invention In order to achieve the above object, the present invention provides a method for removing chlorine containing one or more oxides selected from the group of magnesium oxide, alumina, magnesium aluminate, magnesium silicate, and silica/alumina on the upstream side of a rubber hose. The material is placed to remove chlorine from the water and hot water flowing through the rubber hose. DESCRIPTION OF THE EMBODIMENTS In FIG. 1, reference numeral 1 denotes a hot water storage tank, and its upper half is equipped with a ball tap 3 with a chlorine removal section 2 attached to the water supply side, a water guide pipe 4, and a hot water sampling port 8.
Further, nipples 1a for connecting to the heat collector 6 are provided at four locations in the lower half. Two heat collectors 6 are usually attached to the lower end of the hot water tank 1, and two connecting nipples 6a are provided at the upper end of each of the heat collectors 6. Connecting. In this case, the rubber hose 5 is connected to the clamper 7.
It is fixed at Water 9 from which chlorine has been removed in the chlorine removal section 2 and supplied from the ball tap passes through the water guide pipe 4 and fills the hot water tank 1, but flows in the direction of the arrow and inside the heat collector 6. Heated by solar heat.
The process of returning to the hot water storage tank 1 is repeated using the thermosiphon principle. The heated water 9 is taken out from the tap 8, but since the water level drops by that much, the water from which chlorine has been removed in the chlorine removal section 2 is replenished from the ball tap 3. In this cycle, the rubber hose 5 serves as a passageway through which water and hot water are slowly circulated by the thermosiphon. Although nothing is attached to the outer periphery of the rubber hose 5, a foamed rubber hose or the like may be attached to the outer periphery. FIG. 2 is a sectional view of the chlorine removal section 2. In the figure, water containing disinfectant chlorine (chlorine) flowing in from an inlet 10 is stored on the fluid guide plate 11 after its flow is made uniform by a fluid guide plate 11 having flowability at the bottom. Chlorine is removed by contact with the chlorine removal material 12 and discharged from the outlet 13.
In addition, as a chlorine removal material, adsorbents such as compounds containing one or more oxides selected from the group of magnesium, aluminum, and silica, which have a longer life than conventional activated carbon, are effective; they increase the surface area. granular, lumpy, or powdered solids are used for this purpose. The rubber hose (material: EPDM) with the above configuration is
As mentioned above, since there is no contact with hot water containing disinfectant chlorine (chlorine), its effectiveness was confirmed in the following test. First, water with a chlorine concentration of 200 ppm was mixed with water with chlorine removed using a chlorine removal material and water without chlorine removed, placed in 200 ml of water at 80°C with a rubber material of size 20 mm x 20 mm (material:
EPDM) and stirrer (number of times: 700r.p.
The test solution was stirred using m) and the degree of deterioration was examined after 12 hours. The degree of deterioration is expressed as the weight of blackened precipitated particles per unit weight (g) of rubber material.The results are shown in Table 1.The degree of deterioration is expressed by the weight of blackened precipitated particles per unit weight (g) of rubber material.The results are shown in Table 1. There were no blackened precipitated particles at all, confirming the effect.

[Table] Furthermore, when the surface of each test piece was observed using a scanning electron microscope, it was found that the surface of the test piece using water from which chlorine had been removed using a chlorine-removing material was the same as before the test, but the surface of the test piece was smooth and had a chlorine concentration of 200 ppm. The surface of the sample tested in water was extremely uneven, confirming that it had deteriorated due to chlorine. Effects of the Invention As described above, since the present invention is a chlorine removal material containing oxides such as magnesium oxide/alumina, magnesium aluminate, magnesium silicate, silica/alumina, etc., it is directly related to the removal of activated carbon and chlorine, which have a short lifespan. Compared to chlorine removal materials that have a low removal capacity, such as chlorine removal materials that contain a large amount of air hardened cement such as gypsum or lime, they have a longer service life, and can be installed upstream of rubber hoses in water supply channels, etc. for a long time. It is possible to prevent the rubber hose from deteriorating over time.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing an embodiment in which the chlorine removal device for water heating equipment of the present invention is used in a solar water heater;
FIG. 2 is a sectional view of the main parts of the device. 2... Chlorine removal section, 5... Rubber hose, 12...
...Chlorine removal material.

Claims (1)

[Claims] 1 A chlorine removal material containing one or more oxides selected from the group consisting of magnesium oxide, alumina, magnesium aluminate, magnesium silicate, and silica/alumina is placed upstream of the rubber hose used in water supply and hot water supply waterways. Chlorine removal equipment for water heating equipment.