TW201440866A - Water purifier - Google Patents

Abstract

The purpose of the present invention is to provide a water purifier that is sufficiently compact and exhibits little pressure loss in the connection pipes, despite having a plurality of filters arranged in a parallel layout. Specifically provided is a water purifier in which three or more columnar filters having an inlet and an outlet at one end are provided to a flow channel connecting a raw water inlet and a purified water outlet, said water purifier being characterized in that at least two of the filters are arranged in parallel in the flow channel, and the total of the bend angles in the channel formed by the connection pipes for one set of filters arranged in parallel is 200 DEG or less.

Description

Water Purifier

The present invention relates to a water purifier for purifying tap water in a general household or the like.

A water purifier used in general households, especially a water purifier that has a large capacity and a long filter life (large water purification capacity), such as a kitchen-type water purifier installed in the lower part of the water tank, is loaded with a plurality of water purifiers. For the filter, these filters respectively accommodate different kinds of filter materials. In addition, in the water purifier having a plurality of filters, in order to sufficiently ensure the filtration flow rate, for example, as described in Patent Document 1, the filters of one of the components are arranged in parallel.

The water purifier of the patent document 1 is configured to be housed in a flat-shaped casing to achieve miniaturization. However, since the plurality of filters are arranged in a horizontal row, the connecting pipes are connected to surround the pipe. The method of the filter is complicatedly bent a plurality of times (three times or more at right angles), and the pipe is long and takes up a large space. Therefore, there is a problem that the water purifier has a large pressure loss in the connection pipe and cannot be sufficiently miniaturized.

[Previous Technical Literature] [Patent Literature]

Patent Document 1: Japanese Patent Laid-Open Publication No. 2007-289888

In view of the above problems, it is an object of the present invention to provide a water purifier which not only has a plurality of filters and a parallel arrangement including filters, but also has a small pressure loss of the connecting pipes and is sufficiently miniaturized.

In order to solve the above problems, the water purifier of the present invention includes the following constitution. that is,

(1) A water purifier for arranging three or more columnar filters on a flow path connecting a raw water inlet and a purified water outlet, the column filter having an inlet and an outlet on one end side, The method is characterized in that at least two of the filters are arranged in parallel in the flow path, and the total value of the bending angles in the connecting pipe path associated with one of the parallel arrangements is 200 degrees. the following.

(2) Preferably, the three or more filters are arranged in two rows, and the number of bendings in the connection pipe path associated with one of the parallel arrangement is two.

(3) Preferably, the three or more filters are arranged in two rows, and the two columns are arranged in a staggered arrangement.

(4) Preferably, the connection piping paths associated with the parallel arrangement described above are paths having the same shape.

(5) Preferably, the filters arranged in parallel are the same type of filters.

(6) Preferably, the filters arranged in parallel are those having the same pressure loss and filtration performance.

(7) Preferably, the filter is composed of a filter head having an inlet and an outlet and a filter element, and the shape of the filter head is the same shape.

(8) Preferably, the three or more filters are arranged in two rows, and the inlets and the outlets of the filters are arranged on a straight line, and the straight line and the center of the two columns are arranged. The shafting is parallel.

(9) Preferably, the plurality of branch pipes associated with the parallel arrangement are respectively a single resin formed pipe.

(10) Preferably, the plurality of branch pipes associated with the parallel arrangement described above have the same shape.

(11) Preferably, the three or more filters are arranged in two rows, and the distance between the central axes of the respective columns in the two columns arranged in the two rows is smaller than the outer diameter of the filter.

(12) Preferably, the filter medium accommodated in the filter arranged in parallel is a columnar or cylindrical sorbent having an axial length longer than a radial length, and is flown in the sorbent. The direction of the road is its axial direction.

(13) Preferably, the filter medium accommodated in the filter arranged in parallel is activated carbon.

According to the above configuration, the present invention can attain the following excellent effects. That is, according to the configuration of the above (1), not only the pressure loss of the filter portions arranged in parallel but also the connection piping paths arranged in parallel can be reduced, and the pressure loss can be reduced. As a result, the flow rate of the water purifier can be increased.

Further, according to the configuration of the above (2), the effect of the above configuration (1) is added, and the connection piping path arranged in parallel is simpler and smaller than the previous connection method.

Further, according to the configuration of the above (3), even in the parallel arrangement of two columns, since the interlaced arrangement is arranged, the filter of the second column comes between the filters of the first column. Therefore, the installation of the second column filter from the first column side (the front side of the water purifier) is easy, and it is also convenient in exchange and maintenance.

Further, according to the configuration of the above (4), since the two connection piping paths arranged in parallel can be set to the same pressure loss, it is possible to set the flow rates of the two filters arranged in parallel to the same flow rate.

Further, according to the configuration of the above (5), the life of the filters arranged in parallel can be formed to be substantially the same life, and there is no waste in which one of them can be used but is exchanged in the middle, and all of them can be simultaneously used at the same time. The filter is exchanged, so it is the most economical.

Further, according to the configuration of the above (6), the effect of the configuration of the above (5) can be more reliably achieved.

Further, according to the configuration of the above (7), the molding die of the filter head becomes one type, which contributes to the manufacture at an inexpensive price and does not make a mistake at the time of assembly.

Further, according to the configuration of the above (8), the branch piping is configured to have a simple shape that is easy to pipe.

Further, according to the configuration of the above (8), a plurality of members such as a plurality of pipe joints such as a hose, a T-shaped pipe, and a bent pipe which are generally used are not required, and the piping operation is simple and simple. Further, since the branch piping is a resin-molded tube, it is inexpensive.

Further, according to the configuration of the above (10), the branch piping system is one type, and thus it is easy to manufacture at a low price and is not mistaken in assembly.

Further, according to the configuration of the above (11), even if they are arranged in parallel, the size can be reduced in the inward direction, and the entire water purifier can be made small.

Further, according to the configuration of the above (12), the filter material of the radial flow path is less likely to be short-circuited, and it is inexpensive and can be reduced in diameter, so that the pressure resistance of the filter is large.

Further, according to the configuration of the above (13), the filters in which the pressure loss of the whole water purifier is large and the activated carbon is used as the filter medium are generally arranged in parallel, and the effect of reducing the pressure loss and increasing the flow rate of the water purifier is large.

1‧‧‧Water purifier

2, 102‧‧‧ filter

3, 103‧‧‧ mounting plate

4, 104‧‧‧ filter head

5, 105‧‧‧ filter

6‧‧‧Pipe

7‧‧‧Import

8‧‧‧Export

9‧‧‧ Raw water inlet

10‧‧‧Water purification outlet

11‧‧‧Shell

12, 112‧‧ ‧ cover

13‧‧‧Cylinder container

14‧‧‧Export cap

15‧‧‧ convex part at the bottom of the container

16‧‧‧ Filter media

17‧‧‧The lower part of the filter material

18‧‧‧Export cap support

19, 119‧‧‧ bayonet joint convex

20‧‧‧1st sealing member

21‧‧‧2nd sealing member

22‧‧‧ Entrance

23‧‧‧Export

24, 124‧‧‧2nd convex

25‧‧‧Filter Department

26‧‧‧Active carbon

27‧‧‧Nonwoven

28‧‧‧ hollow fiber membrane

31‧‧‧Valves

32‧‧‧ valve body

33‧‧‧ Spring

34‧‧‧Valve sealing member

36, 136‧‧‧Outer tubular

37‧‧‧Inside cylindrical part

38‧‧‧Internal space

39, 139‧‧‧ bayonet joint recess

41, 141‧‧‧1st convex

42‧‧‧ gap in the 1st convex

43‧‧‧Slit of the first convex part

44, 144‧‧ ‧ prominence

51, 151‧‧‧ openings

52‧‧‧ gap

53, 153‧‧‧ Mounting surface

54‧‧‧Installation surface of the wall

161‧‧‧Small screws

162‧‧‧Upper surface tubular

1(A) to 1(D) are a front view, a plan view, a right side view, and a perspective view of a water purifier according to an embodiment of the present invention.

Fig. 2 is a plan view showing a branch pipe according to an embodiment of the present invention.

3(A) to 3(C) are a longitudinal sectional view, a front view, and a transverse cross-sectional view of a filter head, a filter element, and a mounting plate according to an embodiment of the present invention.

4(A) to 4(C) are a longitudinal sectional view, a front view, and a transverse cross-sectional view of a filter head, a filter element, and a mounting plate according to another embodiment of the present invention.

Fig. 5 is a longitudinal sectional view showing a filter element by adsorption filtration according to an embodiment of the present invention.

Fig. 6 is a longitudinal sectional view showing a filter element as a pre-filter according to an embodiment of the present invention.

Fig. 7 is a longitudinal sectional view showing a filter element for membrane filtration according to an embodiment of the present invention.

8(A) to 8(G) are schematic plan views showing the path of the filter connecting piping according to the embodiment of the present invention.

9(A) and 9(B) are schematic plan views showing the path of the filter connecting piping according to another embodiment of the present invention.

10(A) and (B) are schematic plan views of a filter connecting piping path according to another embodiment of the present invention.

11(A) and (B) are filter connection pipings which are not examples of the present invention. A schematic view of the trail.

Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings on the one hand.

In addition, the "filter for water purifier" in the present invention is hereinafter simply referred to as "filter".

Fig. 1 shows a water purifier according to an embodiment of the present invention. Fig. 1(A) shows a front view, (B) shows a top view, (C) shows a right side view, and (D) shows a perspective view.

As shown in Fig. 1, the water purifier 1 of the present embodiment basically includes a filter 2, a mounting plate 3, and a pipe 6 composed of a filter head 4 and a filter element 5.

A plurality of filters 2 are disposed, and between the filters, a plurality of pipes 6 are circulated and connected to the tap water to be treated by the water purifier.

Each of the filter heads 4 of the plurality of filters 2 has an inlet port 7 and a gas outlet 8 as a tap water flow path, and the filter 2 has a columnar shape and has an inlet and an outlet on one end side. The filter of this type has a compact structure in which the pipe connection is concentrated on one end side as compared with a filter having an inlet and an outlet on both end sides. Especially in a water purifier with a plurality of filters, this advantage is particularly noticeable. The inlet port 7 of the filter head 4 at the left end in Fig. 1(A) is the raw water inlet port 9 of the water purifier 1, and is connected to the raw water introduction pipe via a separately prepared faucet at the raw water inlet port 9, and is supplied as raw water. Tap water. In addition, the outlet 8 of the filter head 4 at the right end in FIG. 1(A) is the purified water outlet 10 of the water purifier 1, which is connected to a separately prepared purified water outlet pipe, and each of the purified water outlet pipes One end is connected directly or temporarily via a faucet to a water purifying nozzle that squirts clean water toward the user.

a flow path between the raw water inlet 9 and the purified water outlet 10 In the above, a plurality of filters 2 are disposed, and the raw water supplied to the raw water introduction port 9 is purified by a plurality of filters 2, and flows out as a purified water from the purified water outlet port 10.

In the water purifier 1 of the embodiment of Fig. 1, four filters 2 are connected. The upstream side of the flow path is referred to as a first filter, a second filter connected in parallel, a third filter, and a fourth filter. These four filters have the same shape and shape, and the connection structure is interchangeable, but the filter materials contained in the inside of the filter element are different, and have different filtering functions and modes. It is preferable that each filter has the following functions, modes, and configurations. That is, the first filter is a pre-filter which is formed of a non-woven fabric of a resin (polypropylene, polyethylene, etc.) having a suitable filtration precision (about 1 to 10 μm) by Melt-blown formation. The molded body or the like serves as a filter material to perform primary removal and filtration of dust or larger particulate impurities which may be present in tap water. The second filter and the third filter arranged in parallel in the flow path are filters using the same or the same type of adsorption filtration and having the same or similar pressure loss and filtration performance (filtration capacity and removal performance). The activated carbon or the like is used as a filter material to adsorb or decompose residual chlorine, odorous and harmful organic substances (such as trihalomethanes) contained in tap water. The fourth filter is a filter that filters by a membrane, and uses a hollow fiber membrane or the like having fine pores as a filter medium to filter fine particles, turbid components, bacteria, and the like contained in tap water.

In the case where the turbidity component or the like in the tap water is large, the embodiment in which the filters filtered by the membrane are arranged in parallel may be employed. Thus, the longevity of the filtration performance of the filter portion by membrane filtration and the effect of reducing the pressure loss can be obtained. Similarly, when the tap water contains large dust or the like, it may be an embodiment in which the pre-filters are arranged in parallel, and is quite effective.

As can be seen from Fig. 1(B), the four filters 2 are arranged in two rows in a plan view (viewed in the axial direction of the columnar filter 2) and arranged in a staggered manner. In addition, in the second filter In the connection piping path in which the third filter is arranged in parallel (that is, the connecting piping path that branches from one path and then recombines and returns to one path for parallel arrangement), the number of bending of the path is in parallel configuration. It is 2 times on any path. Further, in Fig. 1(B), the bending of the connecting pipe path is a right angle (90 degrees). That is, the total of the bending angles in the connecting piping paths arranged in parallel is 180 degrees. The present invention is characterized in that the total value of the bending angle including the design margin, the manufacturing error, and the like is set to 200 degrees or less. Here, the bending in the connecting pipe path is defined as the bending of the path connecting the pipes, and does not include the bending of only the flow path inside the filter. Usually, the inside of the filter constituted by the filter head having the introduction port and the outlet port and the filter element are also curved, and the total value of the bending angles in the internal flow path of the filter exceeds 200 degrees. Thereby, the total value of the bending angles in the connecting piping paths arranged in parallel is set to 200 degrees or less, and the pressure loss of the connecting piping path calculated from the filter portion is reduced, and the pressure loss as a whole of the water purifier is reduced. It is a necessary and effective condition. In the present invention, the bending of the connecting pipe path means that all the benders which are the pressure loss of the flow path are brought about by changing the direction of the connecting pipe path from the state of the straight line, and the bending angle is a right angle. Bending at an angle other than one or a circular arc is also considered as a one-time bending. In the arcuate bending, the bending angle is defined by the angle at which the tangent lines of the arcs at the ends of the arc intersect each other (see FIG. 9(B) to be described later). Further, it includes not only the bending in the plane orthogonal to the axial direction of the columnar filter 2 but also the bending toward the outside (up and down direction). In this way, since the total value of the bending angles in the connecting piping paths arranged in parallel is set to be within the limit of 200 degrees or less, the pressure loss of the filter portion can be reduced not only by the parallel arrangement but also as the connecting piping path arranged in parallel. It can also reduce pressure loss than the conventional connection method. In addition, since the number of bends is 2 times and By arranging the filters in parallel, the connection piping path in parallel configuration can constitute a reasonable configuration design, and can be miniaturized and reduced in pressure loss compared with the previous connection method. That is, there is no possibility that the pressure loss of the connection piping path will impair the purpose of reducing the pressure loss of the filter portion by the parallel arrangement. As a result, the flow rate of the water purifier can be increased.

In the embodiment of Fig. 1(B), the bending angle is a right angle (90 degrees), and the bending is two times, and the connecting piping paths arranged in parallel are formed. Of course, the angle of the bending angle is smaller (for example, 45 degrees). Other embodiments of the second bending (see Fig. 9 (A) to be described later). Thus, the smaller the total value of the bending angles, the more the pressure loss in bending can be reduced. However, in this case, in order to prevent the filters from interfering with each other, it is necessary to increase the piping path of the straight portion to be longer than that of Fig. 1(B), and accordingly, the lateral length as the water purifier also increases.

Further, in order to facilitate the design of the water purifier, for example, in order to avoid interference with the filter and the accessory member in the vicinity of the pipe, the connection pipe path arranged in parallel may be bent more than twice (for example, 4 times). The embodiment. In this case as well, since the bending angle of the primary bending is reduced, the total value of the bending angles is maintained at 200 degrees or less, so that the pressure loss of the connecting piping path can be reduced.

In Fig. 1(B), the connecting piping paths arranged in parallel are paths having the same shape. Thereby, the two connection piping paths arranged in parallel can be set to the same pressure loss. Moreover, the life of the filters 2 of the same or the same type arranged in parallel can be substantially the same life, and there is no waste that one of them can be used but is exchanged in the middle, and all the filters can be exchanged at the same time. And thus the most economical. Of course, it is also possible to arrange filters of different kinds and different performances in parallel, and this case is also included in the present invention.

Further, the distance between the central axes of each of the two columns of the two-column arrangement is set to be smaller than the outer diameter of the filter 2. Since the two columns are arranged in parallel, a small arrangement can be achieved in the inward direction, and the entire water purifier can be miniaturized.

Further, in Fig. 1, the respective inlets and outlets of the filter 2 (the introduction port 7 and the outlet port 8 of the filter head 4) are disposed on a straight line, and the straight line is parallel to the central axis of the column of the two rows. Further, the plurality of pipes 6 that connect the plurality of filters 2 are arranged in parallel and are branched pipes, and each pipe is composed of a single resin molded pipe. Further, the plural branch pipes are the same-shaped branch pipes 6 as shown in FIG. The branch pipe 6 is a method in which the front end is inserted and coupled, and can be simply inserted and connected to the inlet port 7 or the outlet port 8 of the filter head 4 in a one-touch manner. Further, the shape of the filter head portion 4 of the plurality of filters 2 also has the same shape. Since the filter 2 and the filter head 4 are arranged, shaped, and configured as a pipe, the branch pipe 6 has a simple shape, and does not require a plurality of hoses, T-tubes, and bent pipes which are generally used. A large number of components such as piping joints make piping work simple and simple. In addition, since the branch pipe 6 is a resin-molded pipe or the like, it is inexpensive, and the branch pipe 6 which is necessary is the same shape and can be one type, and the resin molding die of the branch pipe 6 can be one type, which is helpful. It is made at a cheap price and will not be mistaken when assembled. The shape of the filter head 4 is the same shape and is one type, and the same effect can be obtained. On the other hand, of course, in the parallel arrangement shown in FIG. 1, the branching pipe may be in the form of a pipe joint using a normal hose, a T-shaped pipe, a bent pipe, or the like, and this case is also included in the present invention. in. According to this configuration, not only the member can be easily obtained, but also the advantages of excellent versatility can be obtained.

In the water purifier 1 of the embodiment of Fig. 1, the filter 2 has four configurations. However, as long as it includes at least two (two parts) filters arranged in parallel, the arrangement 3 A water purifier composed of three or more filters can realize a parallel arrangement of two columns of staggered configurations, and the above functions and effects can also be obtained.

Fig. 8 is a top plan view showing a connecting pipe path in a parallel arrangement using filters, showing an embodiment of Fig. 1 and other modified embodiments of the present invention. In Fig. 8, the circle symbol indicates the filter (and the filter head), and the straight line between the circle marks indicates the pipe.

9 and FIG. 10 are plan views showing the connection piping paths arranged in parallel in the filter according to the embodiment of the present invention, which is different from FIG. 8. On the other hand, Fig. 11 is a schematic plan view showing a filter connecting piping path which is not an embodiment of the present invention (part of the parallel arrangement). In FIGS. 9, 10, and 11, the circle marks and the straight lines also have the same meaning as in FIG.

In the embodiment of any one of FIG. 8, the total of the bending angles in the connecting piping paths arranged in parallel is 180 degrees (200 degrees or less), the number of bending times is two, and the connecting piping paths are paths of the same shape. Although not shown, for example, the bending angles may be different in the two connecting piping paths arranged in parallel, and the shapes of the two connecting piping paths may be different shapes.

Fig. 8(A) corresponds to Fig. 1(B). Fig. 8(B) shows an example of a parallel arrangement of two columns which are not alternately arranged. Fig. 8(C) shows an example in which there are two sets of staggered parallel configurations. In each of the groups arranged in parallel, the total bending angle in the connecting pipe path is 200 degrees or less, and the number of bending times is two. Fig. 8(D) is a modification of Fig. 8(B) in which the filters arranged in parallel are arranged as a lateral position and are small in the lateral direction, but for the longitudinal direction in the figure, due to Fig. 8(A) In (C), the distance between the central axes of the two columns of the two columns is set to be smaller than the outer diameter of the filter, so that FIGS. 8(A) to (C) are smaller.

In Fig. 8 (A) to (D), the inlets and outlets of the filter are arranged on a straight line, and the straight line is parallel to the central axis of the two columns of the arrangement, and the plurality of divergent pipes arranged in parallel are the same. The shape of the branching pipe, the shape of the filter head is also the same shape. Therefore, the branch pipe and the filter head are of one type, which contributes to manufacture at an inexpensive price, and is not mistaken in assembly.

In Figs. 8(E) to (G), the filter heads are not of the same shape and have two types of filter heads. Among the two types, there are a branching arrangement in which the filter heads are arranged in parallel, and a filter head in which a type of bending of the piping path is formed. By using such a filter head, compared with Fig. 8(A), it is possible to realize a configuration in which the lateral direction is small.

In particular, FIG. 8(F) and FIG. 8(G) are arranged in parallel at the same time, and the distance between the central axes of each of the two columns of the two columns is set to be smaller than the outer diameter of the filter. Further, in the lateral direction, the distance from the perpendicular line of the respective columns passing through the center of the filter toward the central axis is set to be smaller than the outer diameter of the filter, so that it is small in both the longitudinal direction and the lateral direction. In addition, since it is a staggered arrangement, it is not only small, but also because the filter of the second column (in the longitudinal direction, that is, the inward direction of the water purifier) comes between the filters of the first column, so from the side of the first column ( The front side of the water purifier is easy to connect to the second column filter, and it is also convenient for exchange and maintenance.

In Figs. 8(E) and 8(F), the pipes between the filters are not the same shape but have two types of pipes. On the other hand, in Fig. 8(G), the plurality of branching pipes arranged in parallel are the same type of branching pipes.

Fig. 9(A) is a form in which each bending angle is 45 degrees in Fig. 8(A), and the total value of the bending angles is 90 degrees. In Fig. 9(A), since the total value of the bending angles is smaller than that of Fig. 8(A), the pressure loss due to bending can be further reduced. However, in order to prevent the filters from interfering with each other, the piping path of the straight portion becomes longer than that of Fig. 8(A). Along with this, the lateral length of the water purifier also increases.

The above-described form is a form in which the pipes are connected to each other at a predetermined angle, but the same shape can be obtained by bending into a circular arc shape. For example, Fig. 9(B) is a form in which the curved portion is curved in a curved shape in Fig. 8(A). Since the pipes are not connected to each other at a predetermined angle but formed as an arc, it is difficult to define the bending angle. Therefore, the intersection angles of the tangent lines toward the arc in the end points of the arc are obtained, and the intersection angle is regarded as the bending angle. That is, in the form of Fig. 9(B), the intersection angle of the tangent to the arc in the end points of the arc is 90 degrees, so the bending according to the bending angle of 90 degrees is 2 times, 1 set. The total value of the bending angles in the connecting piping path is 180 degrees. In the form in which the bending is curved in a circular arc shape, the total value of the bending angles in the connecting pipe paths of one set can be obtained by obtaining the angle as described above.

In the embodiment of any of FIG. 10, the total of the bending angles in the connecting piping paths arranged in parallel is 200 degrees or less, and the connecting piping paths are paths of the same shape. Further, the plurality of branch pipes arranged in parallel are the same type of branching pipes, and the shape of the filter head is also the same shape.

10(A) and 10(B) show an embodiment in which the filters are arranged in two rows and are arranged in one row and three columns. The bending times of any of the forms are four times, the bending angle is 45 degrees and the angle is small, and the total bending angle is 180 degrees, which can reduce the pressure loss of the connecting piping path. Fig. 10(A) is suitable for miniaturizing the size of the water purifier inward (the longitudinal direction of the drawing), and in addition, in Fig. 10(B), it is possible to have a symmetrical symmetric configuration and to miniaturize the lateral dimension. Used in case.

In the above-mentioned FIGS. 8 to 10, the embodiment of the present invention has been described using a plan view. Therefore, it is assumed that the bending in the connecting pipe path is located in the plane, but the bending may be outward (up-and-down direction). Bending as long as it bends The total value of the curved angles is 200 degrees or less, and is included in the present invention. In particular, the bending of Fig. 10(A) in a row arrangement may be toward the out-of-plane direction. If this is the case, the size of the water purifier may be reduced toward the inside (the longitudinal direction of the figure).

On the other hand, in the example of FIG. 11 which is shown as a comparative example, the bending angle in the connecting piping path arranged in parallel is 90 degrees, the number of bending times is four times, and the total value of the bending angles is 360 degrees, and exceeds 200. degree. Therefore, the pressure loss of this connecting piping path is large. (By the way, in the water purifier of Patent Document 1, in the connection pipe path which is arranged in parallel in the same manner as in the form of FIG. 11(A), outside the plane orthogonal to the axial direction of the columnar filter (below The direction) has a curvature of 90 degrees of 5 times, and the total value is 450 degrees, which is different from the present invention).

Further, in the invention part other than the invention of the parallel arrangement in the present invention, the arrangement and configuration of the plurality of filters are not limited to the above-described configuration, and may be based on the water quality of the tap water and the necessary flow rate in the area to be targeted. For example, the configuration is such that the total of the bending angles in the connection piping paths of the one group in which the four groups are arranged in series is more than 200 degrees.

Next, the structure and configuration relating to the combination of the filter head 4 and the filter element 5 constituting the filter 2 will be described. Further, the structure and configuration in which the filter 2 is fixed to the mounting board 3 will be described.

In the water purifier or the water purifier filter used in general households, in order to facilitate the exchange of the filter element, it has been created that the filter element is detachably mounted on the filter head connected to the tap water flow path. Constructed and these constructs have been used in practice. Among them, a mechanism such as a bayonet mechanism and a screwing mechanism is generally used to disassemble and filter the filter head.

For example, in the patent document, Japanese Patent Special Table 2010-504185 In the water purifier, the filter element is fixed to the circular cap by inserting the fixing member into the sliding passage of the circular cap and rotating it. At this time, the protruding portion formed on the lower portion of the circular cap is inserted into the guide groove formed along the upper surface of the filter element to guide the rotational movement of the filter element. However, this method has the problem that the user cannot correctly judge when and where the fixing and installation of the rotary motion will be completed. Therefore, in view of such a problem, it is necessary to provide a water purifier and a water purifier for a filter which allow the user to surely know the installation of the filter element of the filter head.

In addition, in the water purifier used in general households, in particular, an under-sink water purifier used in the lower part of the water tank, in order to install the water purifier on the wall surface of the storage portion at the lower portion of the water tank, The filter of the water purifier is generally fixed to the mounting plate, and the mounting plate is attached to the wall surface of the storage portion. The filter is usually composed of a filter head and a filter element, and the filter is fixed to the mounting plate, and in most cases, the filter head is fixed to the mounting plate.

For example, in Japanese Laid-Open Patent Publication No. 2012-143709, the attachment of the filter head to the mounting plate (bracket) is performed by locking a plurality of screws from the back side of the mounting plate. However, on the one hand, positioning the filter head in the correct position on the mounting plate, on the one hand, locking a plurality of bolts from the back side, there is a problem that not only tools are required but also a troublesome work that takes time. In particular, in a water purifier having a plurality of filters, the problem is even greater. Therefore, in view of such a problem, it is necessary to provide a water purifier having a filter composed of a filter head and a filter element, and it is convenient to fix the filter head to an installation for mounting on a wall surface or the like. On the board.

3 is a view showing a filter head 4, a filter element 5, and a mounting plate 3 according to an embodiment of the present invention, wherein FIG. 3(A) is a longitudinal sectional view, and FIG. 3(B) is a front view. 3 (C) is a cross-sectional view. Further, in Fig. 3(A), for convenience of explanation, the position of the circumferential direction of the bayonet mechanism described below is shifted from the original position, and is shown in the figure.

As shown in FIG. 3, the filter element 5 is detachably attached to the filter head 4 by rotation by a bayonet mechanism to constitute the filter 2. More specifically, at least the outer periphery of the cover 12 constituting the upper portion of the columnar filter element 5 is provided with at least two bayonet coupling projections 19, and the upper portion of the cover 12 including the bayonet coupling projection 19, the shaft Inserting the inner space 38 defined by the outer tubular portion 36 of the filter head 4, the bayonet coupling convex portion 19 is coupled to the recessed portion of the outer tubular portion 36 of the filter head portion 4 by the bayonet coupling projection 19 39 engages and rotates, and the combination is achieved by the bayonet mechanism. In the case where the filter element 5 is removed, it is performed by rotating in the opposite direction to the joining. In this way, the filter head 5 can be detached from the filter head 4 by the bayonet mechanism, so that the disassembly and assembly operation is convenient and simple.

At least one elastically displaceable first convex portion 41 (engagement portion) is provided on the filter head portion 4, and at least one second convex portion 24 is provided on the outer surface of the filter element 5 (cover 12). The joint portion is disposed so as to cause the filter element 5 to be attached to the filter head portion 4, and at the completion stage, the first convex portion 41 is elastically displaced and passes over the second convex portion 24 to form the first convex portion. The portion 41 is engaged with the second convex portion 24 . By this (engagement), the mounting feeling of the filter element 5 produced by the bayonet mechanism can be obtained. In the embodiment shown in FIG. 3, the first convex portion 41 is formed by the notch 42 provided on the outer peripheral edge of the lower portion of the filter head 4 and the slit 43 provided in the circumferential direction from the notch 42. The shape of the direction extension. Needless to say, the shape of the first convex portion is not limited thereto, and the shape of the truncated cone (cone frustum, the corner post, the cylinder, and the hemisphere) as shown in FIG. 4 to be described later is also preferable. The shape of the second convex portion is a prismatic shape in Fig. 3, but may be the same shape as the first convex portion. Further, the installation position of the first convex portion provided on the filter head may not be the lower outer circumference. For example, it may be the inner peripheral surface of the outer cylindrical portion 36. At this time, of course, the position of the second convex portion is also set at a position corresponding to the first convex portion.

In this way, the components other than the components related to the mounting are not provided, and the mounting feeling of the cartridge 5 can be easily and inexpensively achieved by only two members (in this case, the filter element 5 and the filter head 4). In addition, by this mounting feeling, the user can surely know that the installation has been completed, and the installation is surely performed without error (without water leakage). Further, when the first convex portion 41 is located on the outer periphery of the lower portion of the filter head, since the user can visually recognize it, the installation feeling can be matched, and the installation can be confirmed more reliably. .

In order to be able to confirm the installation of the filter head by the filter more reliably, it is preferably configured in such a manner that the filter element is placed on the outside of the filter at the position where the filter cartridge is installed. Marking (may be the second convex portion described above, other protruding marks or printed marks, etc.), and an indication of the installation of the portion of the filter head that is easily visible (by printing or engraving, etc.) The formed characters and patterns are calibrated (or consistent) as the circumferential position of the filter element rotation.

In addition, similarly, it is disposed in such a manner that an imprint (descriptive text and pattern formed by printing or engraving) indicating that the filter element is removed (or started to be mounted) is provided at a portion of the filter head that is easily visible. It is more preferable that the position of the filter element is calibrated (or coincident) with the mark on the outer surface of the filter element at the position where the filter element is removed (or the start of installation). According to the above configuration, it is possible to visually confirm the completion of the removal of the filter element (or the start of installation).

In the embodiment of Fig. 3, the first convex portion 41 is configured to be elastically displaceable, but conversely, the second convex portion may be elastically displaceable, and both of them may be elastically displaced. That is, as long as it is a snapping portion and/or is engaged The portion is elastically displaceable, and with the rotation of the filter element 5 mounted on the filter head 4, the engaging portion is engaged with the engaged portion, and the elastic displacement state of the elastically displaceable portion is changed. The configuration of the filter element generated by the bayonet mechanism can be configured. Thereby, the engagement portion and the engaged portion may not be in the form of the first convex portion and the second convex portion, but may be a modified embodiment of the convex portion and the concave portion (or the concave portion and the convex portion). In the case of the convex portion and the concave portion, the convex portion and/or the concave portion can be engaged by the engagement and fitting of the convex portion and the concave portion with the rotation for attaching the filter element 5 to the filter head portion 4. The elastic displacement state of the elastic displacement portion changes, and the mounting feeling of the filter element generated by the bayonet mechanism can be obtained.

In the water purifier 1 shown in Fig. 1, a plurality of filters 2, which are different in the filter medium accommodated in the filter element 5, are fixed to the mounting plate 3 and used. Preferably, in the filter 2 of the plurality of water purifiers 1, the position and/or shape of the first convex portion 41 and the second convex portion 24 that bring the mounting feeling of the bayonet mechanism are based on The filter medium accommodated in the inside of the filter element 5 changes. For example, the position of the upper and lower convex portions 41 and the second convex portion 24 in the upper and lower directions may be different depending on the filter medium to be accommodated. Further, for example, a combination of a first convex portion having an acute end angle and a smooth second convex portion may be formed with respect to a certain filter medium, and in the other filter medium, a first convex shape having a rounded front end shape may be reversely formed. The form of the combination of the second portion and the second convex portion of the acute angle. According to this configuration, it is possible to form a combination in which the convex portions of the acute angle other than the combination of the convex portion of the correct acute angle and the convex portion of the smoothness are unable to cross each other (engagement). In the combination of the rounded convex portions, the mutual crossing is too easy to obtain the mounting feeling.

According to the above aspect, even if it is desired to attach a member that is different from the original filter element to the filter head, the first convex portion and the second convex portion are used. The positions and/or shapes do not correspond well to each other (they cannot be properly engaged), so that the mounting feeling of the bayonet mechanism cannot be obtained, or the first convex portion and the second convex portion collide with each other, and the bayonet cannot be physically completed. The combination of institutions. Based on these phenomena, the user may notice that the installed filter element is incorrect. That is, it is possible to prevent misassembly of the filter elements having different functions, so that the filter element of the correct selection can be surely performed.

In this manner, depending on the filter material accommodated in the inside of the filter element 5, the positions and/or shapes of the first convex portion 41 and the second convex portion 24 that have the mounting feeling of the bayonet mechanism are different, and there are different numbers. The filter type corresponds to a plurality of filter heads and the outer casing of the filter element, and is a form in which a plurality of molds as resin molded articles are produced. Therefore, the filter head and the outer casing of the filter element are of one type, and the first convex portion and the second convex portion are separately formed, and the final operation such as welding or screwing is performed according to the type of the filter. Embodiments of other locations and/or other shapes are preferred because they are inexpensive to manufacture.

Of course, in a water purifier having such a plurality of different types of filter elements, the filter element can be prevented from being mismounted, and other key structures can be provided without relying on the first convex portion for obtaining the mounting feeling of the above-described bayonet mechanism. The structure of the second convex portion is excellent in terms of the structure of the attachment feeling of the bayonet mechanism and the method of preventing misassembly, from the viewpoint of simplicity and low cost.

As described above, the mechanism for preventing misassembly of a plurality of different types of filter elements by using the structure in which the mounting mechanism of the bayonet mechanism is obtained can be similarly used in the above-described modified embodiment of the convex portion and the concave portion.

In FIG. 3, when the filter element 5 is attached to the filter head 4, it is disposed on the outer circumferential surface of the cover 12 and the inner circumferential surface of the outer cylindrical portion 36 and the inner cylindrical portion 37 of the filter head portion 4. Two sealing members (first sealing member 20 and second sealing member) 21) The liquid-tight seal is formed between the filter element 5 and the filter head 4, thereby ensuring liquid tightness as a flow path of raw water (upstream) and purified water (downstream).

A valve 31 is provided in a portion of the raw water (upstream) flow path that communicates with the inlet port 7 of the filter head 4 and the upper portion of the filter head portion 4. The valve 31 includes a valve body 32 having a substantially columnar shape (the upper portion is a cylindrical shape), a spring 33 that applies a potential energy to the valve body 32 in the downstream direction, and a valve sealing member 34 that is attached to the valve body 31. The valve body 31 is held in a posture in which the upper cylindrical portion is engaged with the protrusion of the inner top surface of the filter head 4.

When the filter element 5 is not attached to the filter head 4, the valve sealing member 34 is pressed against the periphery of the flow path hole by the biasing force of the spring 33, and the flow path hole is closed, and the valve 31 is closed. status. On the other hand, when the filter head 5 is mounted on the filter head 4, the front end portion of the outer surface of the outlet cap support portion 18 located at the center of the cover 4 of the filter element 5 abuts against the valve body, and the resistance to the spring 33 is The valve body 32 is lifted up, and the flow path is opened, so that the valve 31 is in an open state. By the mechanism of the above valve 31, water can be surely passed through when the filter element 5 is installed. Further, when the filter element 5 is not installed, since the flow path is closed by the valve 31, the installation of the filter element 5 exists. When the defect or the filter element 5 is exchanged, the malfunction of the tap water discharge or the like can be prevented.

As can be seen from Fig. 3, when the filter element 5 is mounted on the filter head 4 and the valve 31 is in the open state, tap water flows in from the inlet port 7 of the filter head 4, and passes through the open valve 31, depending on the inlet 22 of the filter element 5. The filter medium 16, the central flow path of the outlet cap 14, the outlet cap support portion 18, and the outlet 23 flow in sequence, and flow through the flow path between the outer cylindrical portion 36 and the inner cylindrical portion 37 of the filter head portion 4 Go to the outlet 8 and flow out.

Hereinafter, the structure and configuration in which the filter 2 of the embodiment of Fig. 3 is fixed to the mounting plate 3 will be described.

The filter 2 is for placing and fixing the filter head 4 on the mounting plate 3 The posture is fixed to the mounting board 3. The mounting plate 3 is provided with an opening 51, and at least one notch 52 (the engaged portion of the protrusion) is provided on the periphery thereof. On the other hand, an elastically displaceable projection 44 is formed at a lower portion of the filter head portion 4 (of the outer cylindrical portion 36). In the case of Fig. 3, the projections 44 are configured to be displaceable in the radial direction. It is preferable that the number of the projections 44 corresponding to the notches 52 is preferable, but the number of the projections 44 may be smaller than the number of the notches 52. By placing the filter head 4 at a predetermined position of the mounting plate 3 and pressing it from above, the projection 44 is inserted and engaged with the notch 52 to be fixed. Even in the case where the projections 44 and the notches 52 have a plurality of them, since the projections 44 are elastically displaceable, the insertion and the engagement can be completed all at once. Of course, the amount of elastic displacement of the projections 44 is set to exceed the manufacturing error of the size and position of both the projections 44 and the notches 52.

By this fixing method, the filter head 4 can be easily fixed to the mounting board 3 without using other members and tools such as bolts. In Fig. 3, the engaged portion of the projection is the notch 52 at the periphery of the opening 51. Therefore, the filter head 4 is fixed in the radial direction with respect to the attachment plate 3 by the engagement of the projections 44.

Further, after the above-described fixing structure and configuration, the filter heads 4 of the plurality of filters 2 shown in FIG. 1 are connected to each other by the pipe 6, and the plurality of connected filter heads 4 can be fixed to the mounting plate at one time. 3. It makes the assembly and manufacture of the water purifier 1 very convenient.

In order to remove the filter head 4 thus fixed from the mounting plate 3, the elastically displaceable projections 44 can be artificially deformed in the direction of displacement, on the one hand, on the one hand, in contrast to the fixing, the filter is provided. The head 4 is detached from the mounting plate 3 in the upward direction and pulled out.

In FIG. 3, the opening 51 of the mounting plate 3 is larger than the upper portion of the cover 12 of the filter element 5, so that after the filter head 4 is fixed to the mounting plate 3, The filter element 5 can be inserted into the opening 51 to be easily attached to the filter head 4, or it can be removed. Thereby, the presence of the mounting plate 3 does not interfere with the disassembly and assembly of the filter element 5.

Thus, in the embodiment in which the mounting plate is present, the position of the filter element is completed (or the disassembly is completed or the installation is started), and the position is set as the circumferential position and the mark on the outer surface of the filter element ( The imprint of the configuration may be disposed not on the easily visible portion of the filter head, but on the easily visible portion of the mounting plate (for example, on the outer periphery of the mounting plate).

The mounting plate 3 has a mounting surface 53 of the filter head 4 and a mounting surface 54 facing a wall body different from the water purifier 1 (the inner side wall of the storage portion of the kitchen lower portion and the wall in the kitchen room, etc.). When viewed from the side, the two sides are formed into a T shape. Here, the side view refers to a case where it is viewed from a direction perpendicular to a surface perpendicular to the mounting surface and the mounting surface. It may not be T-shaped but L-shaped. Further, a mounting hole for the wall body is provided on the mounting surface 54 of the wall body. According to this configuration, the water purifier 1 can be easily attached to the wall of the kitchen sink and the wall of the room, and the assembly time on site is small.

Further, a second projection may be provided on the lower portion of the outer cylindrical portion 36 in addition to the projection 44 of the filter head portion 4, and the second projection may be engaged with the notch 52 with respect to the circumferential direction to perform the filter head. The portion 4 is fixed relative to the circumferential direction of the mounting plate 3. In this case, if the circumferential gap of the projection 44 with respect to the notch 52 is larger than the circumferential clearance of the second projection with respect to the notch 52, the force in the circumferential direction generated by the rotation of the filter element 5 can be surely removed. It is applied to the elastically displaceable projections 44, so that the risk of breakage can be further reduced.

The elastically displaceable protrusion 44 of FIG. 3 described above is elastically displaceable in the radial direction, but even if it is configured to be displaceable in the circumferential direction, the filter head is provided. The filter head can be fixed to the mounting plate by pressing the protrusion with respect to the mounting plate and engaging the protrusion with the notch.

Further, by pressing the filter head against the mounting plate, the elastically displaceable projection provided on the lower portion or the outer circumference of the filter head (better in the vicinity of the lower portion) is not engaged with the gap of the periphery of the opening 51. Instead of the opening 51 itself or the hole provided in the mounting surface of the mounting plate (the engaged portion of the projection), the filter head can be easily fixed to the mounting plate.

Further, it is preferable that the decorative cover is attached to the mounting plate 3 to cover the entire or a part of the filter 2 to improve the appearance.

Fig. 4 is a view showing a filter head 104, a filter element 105, and a mounting plate 103 according to another embodiment of the present invention, which is different from Fig. 3, wherein Fig. 4(A) is a longitudinal sectional view, and (B) is a front view, (C) ) is a cross-sectional view.

As shown in FIG. 4, the filter element 105 is also detachably attached to the filter head 104 by rotation by a bayonet mechanism to constitute the filter 2. In the embodiment of Fig. 4, the bayonet coupling recess 139 is different from the embodiment of Fig. 3, and is formed by the upper portion of the recess provided in the lower portion of the inner surface of the outer tubular portion 136 of the filter head portion 104. The lower surface of the recess of the mounting surface 153 of the plate 103 is formed. The bayonet coupling projection 119 provided on the outer circumference of the cover 112 constituting the upper portion of the filter element 105 is engaged with the bayonet coupling recess 139 to form a coupling of the bayonet mechanism.

The downward load applied to the bayonet coupling convex portion 119 by the water pressure generated when the water is filtered toward the filter 102 is carried out by the mounting surface 153 of the mounting plate 103 on the lower surface of the bayonet coupling recess 139. stand by. In the case of Figure 3, this downward load is supported by the filter head 4. In terms of the mounting plate, the size and shape of the strength that can withstand the load are less constrained, and it is easy to reinforce, so it is negative. Among the models of the Netherlands, the embodiment of Fig. 4 has the advantage of being easy to design.

In Fig. 4, the configuration of the mounting feeling obtained by the bayonet mechanism is also slightly different from that of Fig. 3. In the embodiment of Fig. 4, at least one elastically displaceable first convex portion 141 (engagement portion) is provided below the periphery of the opening 151 of the mounting plate 103. The first convex portion 141 is preferably in the shape of a truncated cone (cone frustum, a corner post, a cylinder, or a hemisphere). The first protrusion is used to complete the rotation of the at least one second protrusion 124 (the engaged portion) toward the filter head 104 of the filter element 105, and the bayonet mechanism is obtained by crossing and engaging. The mounting feeling is that at least one second convex portion 124 is provided on the outer surface of the filter element 105 (the shoulder portion of the cover 112).

In the embodiment of Fig. 4, since the first convex portion 141 is located below the periphery of the opening 151 of the mounting plate 103, it can be visually recognized by the user. Therefore, it is possible to confirm the installation more reliably by visually matching the mounting feeling. Of course, the installation position of the first convex portion provided on the mounting plate may not be the lower portion of the periphery of the opening 151, and may be, for example, the inner circumferential surface of the opening 151. At this time, of course, the position of the second convex portion is set at a position corresponding to the first convex portion.

Further, similarly to the description of the structure of the first convex portion 41 and the second convex portion 24 for obtaining the mounting feeling of the bayonet mechanism of the embodiment of Fig. 3, the engagement portion is engaged with the engaged portion. In a preferred embodiment, the position and/or shape of the first convex portion 141 and the second convex portion 124 that bring the attachment feeling of the bayonet mechanism of FIG. 4 are based on the filter element. 105 internal filter material changes. Thereby, even if no other structure is provided, the effect of preventing misassembly of the filter element can be obtained.

Next, the structure and configuration in which the filter 102 is fixed to the mounting plate 103 in the embodiment of Fig. 4 will be described.

The filter 102 is configured to mount and fix the filter head 104 to the installation. The posture of the board 103 is fixed to the mounting board 103.

A mounting surface 153 (upper surface) of the mounting plate 103 is formed around the opening 151 through which the filter element 105 is inserted, and a substantially cylindrical upper surface cylindrical portion 162 (the engaged portion of the protrusion) is formed. . On the other hand, a portion of the outer periphery of the lower portion of the outer cylindrical portion 136 of the filter head portion 104 is formed with elastically displaceable projections 144, that is, a plurality of longitudinal strip-shaped ridges. Further, the inner circumferential shape of the upper surface cylindrical portion 162 of the attachment plate 103 and the shape of the lower outer circumference (flange portion) of the outer cylindrical portion 136 of the filter head portion 104 are substantially the same shape. By placing the filter head 104 on the mounting plate 103 and pressing it, the outer periphery of the lower outer cylindrical portion 136 is inserted into the upper surface cylindrical portion 162 to displace the elastically displaceable projection 144, and the upper surface cylindrical portion 162 is engaged. Combine the chimerism. Thereby, the filter head 104 is placed and fixed to the mounting plate 103.

In the embodiment of Fig. 4, in order to fix the filter head 104 to the mounting plate 103 more firmly, the filter head 104 and the mounting plate 103 are further screwed. More specifically, the screw 161 is inserted into a through hole provided in the periphery of the opening 151 of the mounting plate 103, and screwed into a guide hole for screw fixing previously provided in the filter head portion 104 to complete the screw coupling. By the combination of the screw methods, firm bonding and fixing can be achieved.

Instead of the small screw 161, a conventional screw or bolt may be screwed to the female taper taper tapped on the filter head 104, or a through hole may be provided in both the mounting plate 103 and the filter head 104. And combined by screws, bolts and nuts.

The upper surface cylindrical portion 162 (the engaged portion of the protrusion) is engaged with the elastically displaceable protrusion 144 by the pressing of the filter head 104 toward the mounting plate 103, even in the screw joint (screw) Before the lock), the filter head 104 is still quite Firmly fixed to the mounting plate 103, the filter head 104 does not fall off even if the assembly of the filter head 104 and the mounting plate 103 is inverted in order to perform screw locking. Therefore, the screw locking can be easily performed from the lower surface side of the mounting plate 103.

Further, in order to prevent the assembly of the right and left, the filter head 104 is provided with one positioning pin, and on the other hand, the mounting plate 103 is provided with a pin hole (not shown) into which the positioning pin is placed. The direction in which the filter head 104 is placed and fixed toward the mounting plate 103 is correctly set.

Further, in the structure and configuration in which the filter head 104 is fixed toward the mounting plate 103, the filter is provided in a water purifier having a plurality of filters (and a filter head) as shown in FIG. After the heads 104 are connected to each other, the filter heads 104 that are connected to each other can be pressed and fixed to the mounting plate 103, and then fixed by screws, whereby the water purifier can be assembled and manufactured very easily.

In FIG. 4, since the opening 151 of the mounting plate 103 is larger than the upper portion of the cover 112 of the filter element 105, after the filter head 104 is fixed to the mounting plate 103, the filter element 105 can be inserted. The opening 151 is attached to the filter head 104, and can also be removed.

Next, the internal structure and configuration of the filter element 5 according to an embodiment of the present invention will be described.

As illustrated in the description of Figure 1, the filter cartridge has a plurality of different filter media housed therein. However, the basic structure and configuration of the filter element described below are common to the constructor. Therefore, a longitudinal sectional view of the filter element 5 by adsorption filtration shown in Fig. 5 will be described as a representative.

The filter element 5 has a casing 11 composed of a bottomed cylindrical container 13 and a lid 12, and a filter portion 25 housed in the casing 11. The filter part 25 is referred to by the filter The material 16 and the internal structure formed by the member that holds the filter material 16 and is water-permeable. The filter portion 25 is formed into a substantially axisymmetric shape in addition to the detailed structure. The cylindrical container 13 is fluid-tightly coupled to the lid 12. The bonding method may be spin welding, ultrasonic welding, spiral bonding, or the like.

The cover 12 is provided with an inlet 22 and an outlet 23 as flow paths. As shown in Fig. 5, an outlet cap support portion 18 integrally formed as a part of the cover is provided near the center of the upper opening portion of the cover 12. One of the outer peripheral portions of the outlet cap support portion 18 is integrally coupled to the inner surface of the upper portion of the lid 12, and the inside of the outlet cap support portion 18 constitutes an outlet passage as a flow path, and is connected to the outlet passage and is provided to The opening of one of the outer side faces of the upper portion of the upper portion of the cover 12 is an outlet 23. The inlet 22 is an annular portion other than the outlet cap support portion 18 in the upper opening of the cover 12.

As a member of the upper portion (downstream side) of the filter portion 25, an outlet cap 14 is provided, and the inside thereof is a downstream side (outlet side) flow path. The outlet cap 14 is fitted into the outlet cap support portion 18 and is fluidly sealed and fixed. In this way, the filter portion 25 (one end) can be finally fluid-tightly engaged and fixed to the lid 12. In Fig. 5, a sealing member is interposed in the engaging portion of the filter portion 25 and the lid 12, so that the liquid sealing performance can be surely achieved, but as long as the liquid tightness can be achieved, the fitting without the sealing member is not problematic. .

The recessed portion 17 at the lower portion of the filter portion is provided at the lower end of the other end portion of the filter portion 25, and is engaged with the convex portion 15 provided at the bottom of the container at the bottom of the cylindrical container 13. The relationship between the other end of the filter portion 25 and the cylindrical container 13 may not be the same as the concave-convex engagement, but the other end of the filter portion 25 may be abutted and held only by the bottom of the container, or may be another of the filter portion 25. There is a gap between one end and the bottom of the container. In short, the other end of the filter portion 25 may be housed in the cylindrical container 13.

In the filter element 5 of Fig. 5, the unique structure of the filter element for adsorption filtration, The description is as follows.

The filter material 16 is a sorbent, and a representative sorbent is activated carbon. The activated carbon may be in any form of granular, powdery or fibrous. Further, it may be in the form of a molded body obtained by molding these sorbents. Further, a ceramic-based sorbent such as zeolite can also be used.

In the embodiment of Fig. 5, the filter medium 16, i.e., the activated carbon 26, is filled in the cylindrical filter medium storage container, but the shape of the filter medium is a columnar shape in which the axial length is longer than the radial length. (It can also be configured as a cylinder). In addition, the direction of the flow path of the activated carbon is in the axial direction from the through hole provided in the bottom of the storage container (the lower portion of the filter portion 25) and flows out toward the outlet cap 14. Of course, it is also possible to form the filter material into a cylindrical shape and to pass water in the radial direction.

As described in Fig. 1, the filter 2 having the filter element 5 using the activated carbon 26 as a filter medium is disposed in parallel as the second filter and the third filter. The sorbent (activated carbon) of the axial flow path of Fig. 5 is used as the filter element 5 of the filter material, and there is less concern that the short circuit phenomenon is less than the radial flow path, and it is inexpensive and can reduce the diameter, and thus the pressure resistance of the filter element The strength of strength. Conversely, the pressure loss is usually the highest in a plurality of filter elements used, and the flow rate of the water purifier may be limited. Thereby, the filter element 5 using the activated carbon 26 of the axial flow path as the filter medium is disposed in parallel in the entire water purifier, and the pressure loss can be greatly reduced, which is most effective and necessary for increasing the flow rate. In addition, activated carbon, especially granular and powdery activated carbon, usually has a large pressure loss, so that the filter element is used as a filter material in parallel, and the shape of the filter material is irrelevant, which greatly reduces the pressure loss and increases the water loss as a water purifier. Traffic has great power.

Further, as the activated carbon portion of the filter medium, an antibacterial component such as silver (or silver ion), copper (or copper ion), or zinc (or zinc ion) may be contained in the tap water. Filter media (eg silver-added activated carbon). Further, a filter medium (for example, a zeolite, an ion exchange resin, or the like) for removing a noble metal contained in tap water such as lead may be contained.

Fig. 6 is a longitudinal sectional view showing a filter element 5 as a pre-filter. The pre-filter is used in the first filter described in the description of Fig. 1. The basic structure and configuration are the same as those of the filter element of Fig. 5 described above. As the filter medium for the pre-filter, a resin molded body formed by melt blowing is typically used as a non-woven fabric.

In the embodiment of Fig. 6, the direction of the flow path of the non-woven fabric 27, which is the filter material, is a radial direction different from that of the activated carbon of Fig. 5, and is filtered by passing water from the outer peripheral side of the cylindrical non-woven fabric toward the inner peripheral side. Of course, the filter medium as the pre-filter is not limited to a non-woven fabric and a resin molded body formed by melt-blown. For example, it may also be a mesh filter.

Fig. 7 is a longitudinal sectional view showing the filter element 5 filtered by the membrane. This is the fourth filter used in the description of Fig. 1. The basic structure and configuration are the same as those of the filter element of Fig. 5 described above. As the filtration membrane, a hollow fiber membrane is typically used. Even if other flat film forms are used as the filter material, the filter element can be formed.

In the embodiment of Fig. 7, a plurality of hollow fiber membranes 28 bent in a U shape are accommodated in a cylindrical storage container. The end portion of the hollow fiber membrane 28 is sealed by an encapsulating resin and fixed to the outlet side of the storage container, and is opened toward the outlet side (downstream side). The water flowing in through the water hole provided in the bottom of the storage container is supplied with water from the outside of the hollow fiber membrane 28 toward the inside, and is filtered by the fine pores of the hollow fiber membrane 28.

(industrial availability)

The present invention is mainly applicable to a water purifier for purifying tap water of a general household or the like. In particular, it is suitable for a wall-mounted water purifier that is used in a kitchen-type water purifier that is installed in a storage portion at the lower part of the kitchen, or that is installed in a wall of a room such as a kitchen or a restaurant.

1‧‧‧Water purifier

2‧‧‧Filter

3‧‧‧Installation board

4‧‧‧Filter head

5‧‧‧ filter

6‧‧‧Pipe

7‧‧‧Import

8‧‧‧Export

9‧‧‧ Raw water inlet

10‧‧‧Water purification outlet

53‧‧‧Loading surface

54‧‧‧Installation surface of the wall

Claims (13)

A water purifier is provided with three or more column filters on a flow path connecting a raw water inlet and a purified water outlet, and the column filter is provided with an inlet and an outlet on one end side, and is characterized in that: At least two of the filters are arranged in parallel in the flow path, and the total value of the bending angles in the connection pipe path associated with one of the parallel arrangement is 200 degrees or less. The water purifier according to claim 1, wherein the three or more filters are arranged in two rows, and the number of bendings in the connecting pipe path associated with one of the parallel arrangement is two. The water purifier according to claim 1 or 2, wherein the three or more filters are arranged in two rows, and the two columns are arranged in a staggered manner. The water purifier according to any one of claims 1 to 3, wherein the connecting piping paths associated with the parallel arrangement are paths having the same shape. The water purifier according to any one of claims 1 to 4, wherein the filter arranged in parallel is the same type of filter. The water purifier of claim 5, wherein the filters arranged in parallel are the same pressure loss and filtration performance. The water purifier according to any one of claims 1 to 6, wherein the filter is composed of a filter head having an inlet and an outlet and a filter cartridge, and the shape of the filter head is the same The shape. The water purifier according to any one of claims 1 to 7, wherein the three or more filters are arranged in two rows, and the respective inlets and outlets of the filters are arranged on a straight line. And the straight line is parallel to the central axis of the two columns arranged. The water purifier according to any one of claims 1 to 8, wherein the plurality of branch pipes associated with the parallel arrangement are respectively a single resin formed pipe. The water purifier according to any one of claims 1 to 9, wherein the plurality of branch pipes associated with the parallel arrangement are in the same shape. The water purifier according to any one of claims 1 to 10, wherein the three or more filters are arranged in two rows, and between the central axes of the columns in the two columns of the two columns. The distance is smaller than the outer diameter of the above filter. The water purifier according to any one of claims 1 to 11, wherein the filter medium accommodated in the filter arranged in parallel is a columnar or cylindrical absorbing body having an axial length longer than a radial length. The agent is composed of the agent, and the direction of the flow path in the sorbent is in the axial direction. The water purifier according to any one of claims 1 to 12, wherein the filter medium accommodated in the filter arranged in parallel is activated carbon.