JPS63224791A - Water purifier - Google Patents

Abstract

PURPOSE:To perform sufficient purification of water, by increasing the opportunity for contact of water with a first filter by passing the water through the first filter from its external periphery. CONSTITUTION:An internal case 37 is provided to the inside of a main body case 21, and a first filter 40 is provided to the inside of the internal case 37 at its external periphery with a space apart from the inside surface of the internal case. Further, a second filter 52 is provided to the inside of the first filter 40. Water is fed from the inside of the main body case 21 to the inside of the internal case 37, and passed in the inside of the internal case 37 through the first filter 40 from its external periphery, and led out further through the second filter 52 to the outside of the purifier. As a result, the opportunity for causing contact of water with the first filter is increased, thus, scrupulous water purification is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention (Field of Industrial Application) The present invention relates to a water purifier that purifies water by passing it through a filter.

(Prior Art) Conventionally, as this type of water purifier, one shown in FIG. 5 has been provided. This filter mainly includes a first filter 5, which is formed by laying several layers of nonwoven fabric 3 inside a filter case 2 and packing granular activated carbon 4 thereon, inside a main body case 1. A second filter 8 made of a large number of hollow fiber fibers 7 is disposed inside the first filter 5 separated by a cylindrical partition 6, and a hose 9 connected to a water faucet (not shown) or the like is connected to the second filter 8. As shown by the arrow in the figure, water is supplied into the main body case 1 from the lower part through the joint 10 and the backflow prevention valve 11, etc., and then the supplied water is transferred to the inlet 12 formed at the upper part of the filter case 2 of the first filter 5. through the filter case 2 and into the granular activated carbon 4;
Furthermore, an outlet 1 is formed in the inner lower part of the filter case 2.
3 into the partition wall 6, then through the hollow fiber 7 group of the filter 8 of the section 2, and then lead out the outlet pipe 16 from the water passage 15 in the lid 14 to the outside of the filter. On the way, the first filter 5 (granular activated carbon 4) removes chlorine contained in the water, and the second filter 8 (
Hollow fiber fibers (IF 7) are designed to remove types of bacteria that cannot be killed by chlorine.

(Problem to be solved by the invention) However, in the case of the conventional one described in Section 2, the first filter 5
, the water flows through the inlet 1 of the filter case 2-1x section.
Since the structure is such that water flows in from 2, there are few paths through which the inflowing water passes through the 4 groups of granular activated carbon, and especially in this case, water tends to flow only through easy passages due to the less clogged parts of the granular activated carbon 4. Therefore, there was a problem in that the contact of the water with the granular activated carbon 4 was small and sufficient purification was not achieved.

The present invention was made in view of two circumstances, and therefore, its purpose is to provide an excellent water purifier that can sufficiently purify water by increasing contact with the first filter. .

[Structure of the Invention] (Means for Solving the Problems) The water purifier of the present invention includes an inner case disposed inside the main case, and a first filter disposed inside the inner case with a gap around its outer periphery. A second filter is disposed inside the first filter, water is introduced into the inner case from inside the main body case, and the first filter is placed inside the inner case. The device is characterized in that it is passed through the filter from its outer periphery, and then a second filter is passed through the filter and led out of the device.

(Function) According to the above means, since water is passed through the first filter from its outer periphery, the inflow portion is wide and there are many passages, so that water comes into contact with the first filter more often.

(Embodiment) Hereinafter, an embodiment of the present invention will be described with reference to FIGS. ff11 to 3.

First, in FIG. 1, 21 is the main body case, which has a double wall shape with an outer wall 22 and an inner wall 23, as shown in FIG. For example, four ribs 24 are formed, and an inlet 25 is formed approximately in the center of the bottom.
A joint 27 with a check valve 26 inserted therein is watertightly inserted therein. 28 is a perforated plate that covers the inlet 25 flush with the bottom of the inner wall 23, and 29 is a water supply hose connected to the joint 27. Further, 30 is a residual water drain opening formed near one side (right side in the figure) of the bottom of the inner wall 23, into which a residual water drain valve unit 31 having a built-in thin silicone rubber plate, for example, is inserted in a watertight manner. A drain hose 32 is connected to the unit 31. And 33 is the outer wall 2
The rubber leg 3 is attached to the boss 34 protruding from the bottom surface of the rubber leg 3 with a screw 35.
The bottom plate is attached together with 6, through which the water supply hose 29 and the drain hose 32 are led out of the vessel.

On the other hand, numeral 37 denotes an inner case, which is accommodated inside the inner wall 23 of the main body case 21 and placed on the folding ribs 24 of the inner case 37, so that the inner case 37 is connected to the inner surfaces of the bottom and circumferential sides of the inner wall 23. They are arranged inside the inner wall 23 so as to ensure gaps 38 and 39 between them, respectively. 40 is the first
Specifically, as shown in FIG. 3, a nonwoven fabric 42 is wrapped around the outer periphery of a porous cylindrical core 41, and activated carbon fibers 43 dotted with silver for sterilization are wrapped around the outer periphery of the nonwoven fabric 42, for example, in four layers. A nonwoven fabric 44 is further wrapped around the outer periphery of the ring, and an I-ring 46 serving as a seal 45 is attached to a part of the whole, and a seal 47 is provided at the bottom as shown in FIG. A lower ring 48 is attached thereto, and the whole is housed inside the inner case 37. 49 is the main body case 21
The upper frame is watertightly screwed onto the outer wall 22 of the outer wall 22 and has a ring in the center, and this ring part 50 is
The first filter 40 is held in such a manner that its outer circumferential surface is spaced apart from the inner circumferential surface of the inner case 37 by a gap 51 by fitting the first filter 40 into the first filter ring 46; At the same time, the screwing of the first frame 49 to the main body case 21 presses the seals 45 and 47, thereby watertightly sealing one end and the lower end of the first filter 40. 52 is a second filter disposed inside the first filter 40;
In detail, this is also made by gathering a large number of hollow fibers 53 into a U-shape and holding them in a resin block 54. The resin block 54 fixes and holds them inside a cylindrical partition wall 55, and the partition wall 55 ”1 Ring portion 50 of the upper frame 49
By screwing watertightly into the first
It is arranged inside the filter 40 of. In this arrangement, a sufficient gap 56 is ensured between the partition wall 55 and the first filter 40, and a sufficient gap 57 is also ensured between the partition wall 55 and the second filter 52. It is now guaranteed.

Reference numeral 58 denotes a lid, which consists of an outer lid 59 and an inner lid 60 inserted into the outer lid 59, and a mounting portion 61 of the inner lid 60 is elastically inserted into the mounting hole 62 of the medium flame of the two frames 49 in a watertight manner. are doing. In addition, the inner cover 60 has a mounting portion 61 attached to the inner cover 60.
A water passage 63 is formed that penetrates the entire body, and a discharge vibro 4 whose tip protrudes outside the outer lid 59 is connected to the water passage 63.

Now, in the case of the device constructed as described above, when using the water supply hose 29, the base end (not shown) of the water supply hose 29 is connected to a water source, such as a water faucet, and the water is supplied through the water supply hose 29. . Then, as shown by the arrow in FIG. 1, water is supplied from the water supply hose 29 through the joint 27 and the perforated plate 28 into the inner wall 23 of the main body case 21, and the supplied water raises the water level inside the inner wall 23 and flows inside. It passes over the upper end of the case 37 and flows into the inner case 37.

Then, a gap 51 is filled in the inner case 37, the gap 51 is passed from the outer circumferential part of the first filter 4o to the first filter 4o, and then passed through the gap 56 to the partition wall 55.
The liquid enters the inside of the partition wall 55 through a gap 57, passes through the second filter 52, and is further led out to the outside of the vessel via the water passage 63 in the inner lid 60 and the discharge vibro 4.

In this way, according to this embodiment, the water is transferred to the first filter 40.
can be passed through from the outer periphery of the first filter 40, thereby increasing the area into which water flows into the first filter 40, and correspondingly increasing the number of passages for water to pass through the first filter 40. As a result, more water comes into contact with the first filter 40, and thus the water can be sufficiently purified.

In particular, in the above embodiment, by using the activated carbon fiber 43 in the first filter 40, the water purification performance can be improved compared to that using the conventional granular activated carbon 4. Moreover, it is possible to prevent the occurrence of problems such as the mixing of activated carbon particles into water and the resulting reduction in the life of the second filter 52.

However, the first filter 40 may be one using granular activated carbon similar to the conventional one, and the second filter 52 may be one using granular activated carbon.
Also, materials other than the hollow fibers 53 may be used.

FIG. 4 shows a different embodiment of the present invention, in which a substantially rectangular inner case 65 is used in place of the above-mentioned inner case 37. A portion of the corner is curved with a relatively large curvature and is placed against the inner surface of the inner wall 23 of the main body case 21, and the first filter 40 is placed approximately at the center of each straight side. As a result, a gap 66 corresponding to the above-mentioned gap 39 is secured between the outer surface of each side of the inner case 65 and the inner surface of the inner wall 23 of the main case 21. A gap 6 corresponding to the above-mentioned gap 51 is formed between the outer surface of the filter 40 and the outer surface of the filter 40.
7 is guaranteed. Therefore, in this case, the inner case 65 does not require additional positioning means such as the rif 24 on the inner surface of the inner wall 23 or the ring portion 50 of the two frames 49, etc.
And the first filter 4o can be positioned, which not only simplifies the structure, but also makes it possible to clean the inner surface of the inner wall 23 easily and thoroughly without being obstructed by the ribs 24. , together with the inner surface of the inner wall 23 and the first
Even if the distance between the filter 4o and the outer surface of the filter 4o is narrowed, the above-mentioned gap 6
6.67, the overall size can be reduced.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings, and in particular, the inner case 65 can be changed to a shape other than a rectangle, such as a triangle, a pentagon, or a hexagon. Other details may also vary.

[Effects of the Invention] As is clear from the second description, according to the water purifier of the present invention, the inner case is disposed inside the main case, and
A first filter is disposed inside the inner case with a gap around its outer periphery, and a second filter is disposed inside the first filter to drain water from inside the main body case. The water is placed in a case, passed through the first filter from its outer periphery within the inner case, and then led out of the filter through the second filter, which prevents water from coming into contact with the first filter. It has the excellent effect of being able to produce a large amount of water and achieve sufficient purification.

[Brief explanation of drawings]

Figures 1 to 3 show an embodiment of the present invention.
FIG. 1 is a longitudinal sectional side view of the whole, FIG. 2 is a sectional plan view thereof, and FIG. 3 is an enlarged longitudinal sectional side view of the main parts. 4 is a diagram corresponding to FIG. 2 showing a different embodiment of the present invention, and FIG. 5 is a diagram corresponding to FIG. 1 showing a conventional structure. In the drawing, 21 is a main case, 29 is a water supply hose, 37 is an inner case, 40 is a first filter, 51 is a gap, 52 is a second filter, 64 is a discharge pipe, 65 is an inner case,
67 indicates a gap. Figure 1 Figure name Figure 2 Figure 3 Next figure Figure 4 Figure 5

Claims (1)

[Claims] 1. An inner case is disposed inside the main case, and a first filter is disposed inside the inner case with a gap around its outer periphery, and a second filter is disposed inside the first filter. is arranged so that water is introduced into the inner case from the inside of the main body case, passed through the first filter from the outer periphery within the inner case, and further led out of the second filter to the outside of the filter. A water purifier characterized by: