JPH06343953A - Water purifier - Google Patents

Abstract

PURPOSE:To provide a water purifier wherein a metallic order has been eliminated effectively by means of a primary filter and arrangement of a heater for regeneration has been taken into consideration. CONSTITUTION:A water purifier 1 is constituted by making a cylindrical active carbon fiber as an element 16 and arranging a primary filter 11 on the outer peripheral face of the element 16 and a porous heater 12 for regenerating active carbon on the inner peripheral face and making water to be purified flow into the primary filter 11, the element 16 and the heater 12 in this order. In addition, the pore diameter of the primary filter 11 can be made small as there exists areal room in the primary filter 11 and a red water ingredient with mum unit can be caught well.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a water purifier containing activated carbon.

[0002]

2. Description of the Related Art Water purifiers using activated carbon as an element have been proposed and used for commercial and household purposes in order to eliminate the complaint that tap water is unfavorable and that tea has a bad taste.
Since activated carbon has a large adsorption capacity, it acts to remove chemical substances and impurities contained in water.

In general, activated carbon includes wood, wood chips, coconut husks,
Coal is carbonized into powder or granules, and the numerous fine pores generated on the surface and inside of the powder or granules function as an adsorbent. Ordinary activated carbon made from coconut palm and the like is convenient because it can adsorb various substances because it has pores of various sizes.

For example, Japanese Utility Model Laid-Open No. 61-187292 proposes a high temperature steam sterilizing water purifier. This water purifier purifies the main body 2 by filling it with activated carbon and passing tap water from bottom to top. In addition, at the time of regeneration, the heater 5 arranged at the bottom of the container is energized. Others, actual development Sho 49-69
The water purifier of No. 46 and the filter of Japanese Unexamined Patent Publication No. 62-136289 have almost the same structure, and generally, a cylindrical activated carbon element is provided with a filter such as a wire mesh on the upper surface or the lower surface.

[0005]

Since the area of the filter is the same as the area of the inlet of the activated carbon element, the pore size is estimated to be about 10 μm. This is because if the pore diameter is smaller than this, clogging becomes severe, the water resistance of the filter increases, and the water flow rate can be secured. But,
If the pore size is about 10 μm, the red water component, which is the source of the stinking odor (iron odor), cannot be removed. Therefore, the red water component and the like will adhere to the next activated carbon, leading to an increase in pressure loss and a decrease in adsorption performance, and the life of the activated carbon will be extremely short. Further, if a heater for regeneration is arranged at the bottom of the container, the height of the container becomes large.

Therefore, an object of the present invention is to provide a water purifier capable of effectively removing an unpleasant odor with a primary filter and considering the arrangement of a regeneration heater.

[0007]

In order to achieve the above object, the present invention uses a cylindrical activated carbon fiber as an element, a primary filter is arranged on the outer peripheral surface of this element, and a porous heater for regenerating activated carbon is arranged on the inner peripheral surface. It is characterized by having done. The primary filter preferably has a pore size of 0.1 to 10 μm.

[0008]

The primary filter is arranged on the outer peripheral surface where a sufficient passage area can be secured, and water to be purified flows from the primary filter in the order of the element and the heater. If the heater is a porous heater and is arranged on the inner peripheral surface of the element, the height of the water purifier can be reduced, and the efficiency of heating the activated carbon can be further improved.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a sectional view of a water purifier according to the present invention,
In the water purifier 1, an activated carbon cartridge 10 is attached to a lower portion of a container 2 together with a lower lid 3, and a flow path switching valve 4, a gear set 5, a valve drive motor 6 and a control component 7 are accommodated in an upper portion of the container 2 and an upper lid 8 is covered. It becomes.

The activated carbon cartridge 10 has a primary filter 11 on the outer circumference and a cylindrical porous heater 12 on the inner circumference.
A space is formed by the upper plate 13 and the lower plate 14, and the element 16 is housed in this space. The porous heater 12 is supported by the heater mount base 17 and is connected to the terminals of the lower lid 3. Reference numeral 18 is a temperature measuring means such as a thermistor.
Numerals 9 and 19 are packings for preventing water from entering the temperature measuring means and the terminals.

2 (a) to 2 (c) are perspective views of an element of the present invention, in which activated carbon fibers are wound into a spiral cylinder (see FIG. 2).
(A)), a concentric circular cylinder (Fig. 2 (b)) and a donut disc laminated cylinder (Fig. 2 (c)).

Next, the operation of the water purifier of the present invention will be described. The water purifier 1 can be operated in a water purification mode, a backwash mode, and a regeneration mode. FIG. 3 is an explanatory view of a water purifying mode of the water purifier of the present invention (the upper diagram is a plan explanatory view mainly including the valve body 4A).
The same applies to FIGS. 4 and 5. ), And relatively large foreign matter is removed by the primary filter 11 in the water flowed as shown by the arrow →→→, and chlorine, trihalomethane and musty odor are removed by the activated carbon fiber element 16. After this, arrow →
It is discharged through the →→ route.

FIG. 4 is an explanatory view of the backwash mode of the water purifier of the present invention. When the valve body 4A is rotated by 180 ° by the motor 6, the flow of the arrow flows as shown by the arrow →→→, and the primary filter 11 The foreign material hanging on the element 16 is peeled off. The foreign matter is discharged from the drainage port 20 along the route of arrow →→.

FIG. 5 is an explanatory view of the regeneration mode of the water purifier of the present invention, and the direction of the valve body 4A of the switching valve is the same as that of FIG.
The water supply system A and the drainage system B are closed, only the drainage system C is opened, and the perforated heater 12 is energized. Then, the residual water around the heater 12 boils and evaporates. Steam arrow →
It is discharged through the →→ route. When the evaporation is complete,
The activated carbon fiber element 16 is heated above 100 ° C. For example, the regeneration is stopped by the temperature measuring means 18 at 120 ° C. Chlorine, trihalomethane, and musty odor in the activated carbon fiber element 16 are removed by the boiling heating and the drying heating.

Further, the heater 12 is a multi-hole heater and is arranged on the inner peripheral surface of the element 16 so that the heater 12
As compared with the case where the element is arranged below the element 16, the entire element 16 can be heated uniformly, and the adsorption performance can be efficiently regenerated.

Next, the reason why the primary filter 11 according to the present invention is arranged on the outer peripheral surface of the element 16 will be described. As described in FIG. 3, the water to be purified is the primary filter 11
-> Element 16-> Follow the heater 12. Although not clear in FIG. 3, the passable area of water is directly proportional to the diameter, and the outermost primary filter 11 has a very large area. When the primary filter 11 has a pore size of several μm, the clogging rate is higher than that of the conventional 10 μm class filter. However, since the area is sufficiently large, it is possible to secure the required water flow for a long time. By appropriately backwashing, the red water component and the like captured by the primary filter 11 are removed together with the wash water.

[0017]

As described above, according to the present invention, it is possible to reduce the pore size by providing a margin in the area of the primary filter,
Since the red water component in the unit of μm can be captured well, it is not necessary to adsorb the red water component on the subsequent activated carbon element, and thus the life of the activated carbon element can be remarkably extended. Further, since the heater is a porous heater and is arranged on the inner peripheral surface of the element, the height of the water purifier can be reduced, and the adsorption performance can be efficiently regenerated.

[Brief description of drawings]

FIG. 1 is a sectional view of a water purifier according to the present invention.

FIG. 2 is a perspective view of the element of the invention.

FIG. 3 is an explanatory view of a water purifying mode of the water purifier of the present invention.

FIG. 4 is an explanatory diagram of a backwash mode of the water purifier of the present invention.

FIG. 5 is an explanatory diagram of a regeneration mode of the water purifier of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Water purifier, 2 ... Container, 4 ... Flow path switching valve, 10 ... Activated carbon cartridge, 11 ... Primary filter, 12 ... Porous heater, 16 ... Activated carbon element.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Nobuyuki Maebashi, No. 1 Nakajima 2-chome, Kokurakita-ku, Kitakyushu, Fukuoka Prefecture Totoki Kikai Co., Ltd. 1-1-1 Totoki Co., Ltd. (72) Inventor Susumu Saito 2-11-1 Nakajima, Kokurakita-ku, Kitakyushu, Fukuoka Prefecture Totoki Co., Ltd.

Claims (2)

[Claims] 1. A cylindrical activated carbon fiber is used as an element, a primary filter is arranged on the outer peripheral surface of the element, and a porous heater for regenerating activated carbon is arranged on the inner peripheral surface of the element, and water to be purified in the order of the primary filter, the element and the heater. Water purifier configured to flow. 2. The water purifier according to claim 1, wherein the primary filter has a pore size of 0.1 to 10 μm.