KR100761516B1 - Filter assembly - Google Patents

Abstract

A filter assembly of a water treatment appliance, which is constructed in such a structure that reduces a pressure drop in a raw water channel connected to a raw water inflow pipe of a connector, and which solidifies a coupling between a filler and an internal case, is provided. A filter assembly of a water treatment appliance comprises: a connector having a raw water inflow pipe(12) installed on one side face thereof, and a purified water discharge pipe(14) installed on the other side face thereof such that a valve unit of which the bottom is opened is installed on an inner part of the raw water inflow pipe; and a cartridge(30) separably connected to the connector. The valve unit includes a plunger(16) movably mounted to be closely adhered or separated from a valve seat face(121) formed in the raw water inflow pipe, and a spring(18) for elastically pressing the plunger to one side. The filter cartridge includes: a housing(32) having a head portion formed on an upper part thereof such that the head portion is coupled to the connector, and a clamping wing(322) formed on an outer side of the head portion to clamp the head portion to the connector; an internal case(34) which is installed in the housing, and has an outer fixing ring(341) formed on a lower periphery thereof such that the outer fixing ring is spaced from the internal case to surround a lower portion of the internal case; a hollow fiber membrane filter element(36) embedded in the internal case; and a suction guide(38) which is installed in the housing, and has raw water inflow ports(38a) formed at both sides thereof oppositely each other through a side face of the head portion within the housing, and a raw water injection port(38b) formed to a lower side thereof.

Description

Filter assembly of water treatment equipment

1A and 1B are cross-sectional views respectively showing an open state and a closed state of a raw water inlet pipe of a connector in a filter assembly configuration of a water treatment device according to the prior art.

2 is a perspective view of the filter assembly of the water treatment device according to the present embodiment in a state in which the connector and the filter cartridge are separated.

3 is a cross-sectional view of the filter assembly of the water treatment device according to the present embodiment in a state in which the connector and the filter cartridge are separated.

4A and 4B are exemplary cross-sectional views respectively showing an open state and a closed state of the raw water inlet pipe of the connector in the filter assembly of the water treatment device according to the present embodiment.

<Explanation of symbols for main parts of the drawings>

10: connector 12: raw water inlet pipe

121: valve seat surface 14: purified water outlet pipe

16: plunger 18: spring

30: filter cartridge 32: housing

321: head portion 322: fastening wing

323: switching wing 34: inner case

341: external fixation 36: filter element

38: suction guide 38a: raw water inlet

38b: raw water inlet 39: filling material

The present invention relates to a filter assembly, and more particularly, to a filter assembly used in domestic water treatment equipment such as a bidet.

The so-called household water treatment equipment such as a water purifier and a bidet device is for safely utilizing drinking water or washing water at home by filtering and supplying a water source. In particular, the bidet device has recently been rapidly expanding in popularity.

In general, a bidet device includes a spray nozzle configured to be automatically withdrawn from the left side of the toilet seat, a filter assembly and a control panel connected to a raw water supply pipe such as a water supply pipe.

Here, the filter assembly is divided into two-way and one-way according to the position of the inlet and outlet, the bidirectional type is the inlet and the outlet are opposite to each other, the one-way type is the inlet and the outlet are arranged on the same side.

On the other hand, the bi-directional filter assembly is a cumbersome operation because the inlet and the outlet are formed in the opposite direction to each other, the replacement of the connection between the raw water pipe and the water purification pipe at the inlet and outlet, respectively, when the replacement is in the opposite direction I have a problem.

Therefore, in recent years, the unidirectional filter assembly, which is easy to replace, is mainly used. The unidirectional filter assembly will be described as follows.

First, the conventional unidirectional filter assembly, as shown in Figures 1a and 1b, the raw water inlet pipe 12 is provided on one side, the water purification pipe 14 is provided on the other side, the lower surface of the connector 10 made of an open structure ), And the filter cartridge 20 is detachably coupled to the connector.

Here, the filter cartridge 20 is composed of a housing 22, an inner case 24 provided in the housing 22, and a hollow fiber membrane filter element 26 embedded in the inner case 24.

The upper end of the housing 22 is coupled to the connector 10 is provided with a head portion 221 which serves as a connector for supplying raw water and discharging the purified water.

Since the inner case 24 installed in the housing 22 is formed to be proportionally reduced in correspondence with the shape of the housing 22, a gap is formed between the housing 22 and the housing 22.

The upper end of the inner case 24 is connected to the case guide 28 in communication with the purified water outlet pipe 14 of the connector 10, the housing 22 and the inner case 24 on the bottom surface of the inner case 24. Raw water inlet hole 24a is provided in communication with the gap between the two, and the head portion 221 is formed with a raw water inlet port 22a in communication with the raw water inlet pipe 12 of the connector 10.

Therefore, the raw water introduced through the raw water inlet pipe 12 of the connector 10 is introduced into the housing 22 through the raw water inlet 22a formed in the head portion 221 of the housing 22 and the inner case 24. It flows downward through the gap between the), and is introduced into the inner case 24 through the raw water inlet hole (24a) formed in the bottom of the inner case 24 is filtered while passing through the filter element (26).

The purified water generated while the raw water passes through the inner case 24 flows to the purified water discharge pipe 14 side of the connector 10 through the case guide 28 provided on the upper case 24. This flow path of water is indicated by the arrow.

On the other hand, the connection structure of the filter cartridge and the connector in the prior art is as follows.

First, a fastening wing 222 for fastening with the connector 10 is provided outside the head part 221 of the housing 22, and a housing (above) above the fastening wing 222 outside the head part 221. 22 is provided with a switching wing 223 for opening / closing the raw water inlet pipe 12 of the connector 10 according to the rotation angle.

The fastening wing 222 and the switching wing 223 are protruded in the horizontal direction from the head portion 22 and are disposed to face each other and are provided in pairs, and the fastening wing 222 and the switching wing 223 are disposed at right angles to each other. It is.

In addition, the inner side of the connector 10 is made of a slide slot is fitted with the fastening wing 222 is fitted.

In addition, in the raw water inlet pipe 12 of the connector 10, a valve means for being driven and opened or closed by a switching wing 223 is configured.

The valve means comprises a plunger 16 fluidly mounted to be in close contact with or separated from the valve seat surface 121 formed in the raw water inlet pipe 12, and a spring 18 for elastically pressing the plunger 16 to one side. have.

According to the connection structure of the connector 10 and the filter cartridge 20, the head part 221 of the housing 22 is drawn into the connector 10 so that the fastening wing 222 is a slide slot of the connector 10. By being inserted into the filter cartridge 20 to maintain the fastening state does not fall down of the connector (10).

Here, when the connector 10 and the filter cartridge 20 are fastened, the switching wing 223 presses the tip of the plunger 16 so that the plunger 16 is spaced apart from the valve seat surface 121 to feed the raw water inlet pipe. (12) is opened (see Fig. 1a), the raw water supplied through the raw water inlet pipe 12 is introduced into the gap between the housing 22 and the inner case 24 is subjected to the filtration process as described above.

Then, when the filter cartridge 20 is rotated to separate the filter cartridge 20 from the connector 10, the pressing state of the plunger 16 by the switching wing 223 is released (see FIG. 1B), whereby the plunger 16 ) Is pressed by the spring 18 and in close contact with the valve seat surface 121, so that the raw water inlet pipe 12 is automatically maintained closed.

Therefore, according to the prior art, since the raw water supply passage is opened or blocked only by the operation of connecting or disconnecting the connector 10 and the filter cartridge 20 without a separate operation on the pipe, the replacement operation of the filter cartridge 20 This feature is easy.

However, the filter assembly according to the related art has some problems as follows in structure, which will be described below.

First, the entire flow path from the raw water inlet pipe 12 of the connector 10 to the purified water outlet pipe 14 of the connector 10 through the filter cartridge 20 and the filter element 26 is referred to as a filter element ( The so-called raw water flow through which the raw water flows before passing through 26 and the purified water flowing through the purified water made through the filter element 26 can be distinguished. According to this, the raw water flow path is formed between the housing 22 and the inner case 24 described above. It can be said that the purified water flow path is formed by the case guide 28 in the inner case 24.

On the other hand, the pressure control factor of the fluid acts as the form or size of the pipe flows through the fluid, according to the prior art, the raw water flow path is in the nature of the narrow gap between the housing 22 and the inner case 24, As the raw water passes through the raw water flow path, the flow velocity increases and the pressure decreases.

That is, since the pressure loss due to the loss head occurs due to the shape characteristic of the raw water flow path leading from the raw water inlet pipe 12 to the interior of the housing 22, the transmittance to the filter element 26 that results in the largest pressure loss is As a result, there is a problem that the supply of purified water may not be made smoothly.

In addition, a polyurethane filler 29 for fixing the hollow fiber membrane filter element 26 is embedded at the upper end of the inner case 24, and, as time passes, between the filler 27 and the inner case 24. There is a problem in that a gap is generated and raw water that does not pass through the filter element 26 is leaked into the gap so that the water purification action may not be performed properly.

The present invention has been made to solve the above-mentioned conventional problems, the pressure loss in the raw water flow path connected to the raw water inlet pipe of the connector is made of a structure, providing a filter assembly of the water treatment device that the coupling of the filler and the inner case is firm For the purpose.

The filter assembly of the water treatment device provided to achieve the above object, the raw water inlet pipe is provided on one side, the purified water outlet pipe is provided on the other side and the bottom surface is made of an open structure and the valve means inside the raw water inlet pipe The connector is provided with a connector, a head portion coupled to the connector, an inner case provided in the housing, a hollow fiber membrane filter element embedded in the inner case, and a filler for supporting the filter element. It is configured to include a filter cartridge made of a structure that is interlocked with the valve means.

In the housing of the filter cartridge is provided with a suction guide to form a raw water inlet in both directions facing each other through the side of the head and the raw water inlet downward, the inner case is connected to the raw water inlet and the upper end of the suction guide As the raw water injected from the suction guide is filtered and the bottom surface is opened so that the purified water is discharged through the bottom surface, the purified water discharged through the bottom of the inner case flows through the gap between the housing and the inner case. And is discharged through the head of the housing.

The inner case is made of a structure having an outer fixing lip surrounding the bottom circumference to the outside, the filler is disposed on the inner bottom of the inner case, and further protrudes down than the inner case to the outer fixing lip and inner case It is mounted in the form of being fitted between the lower end.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 2 through 4B, and like reference numerals refer to like elements as in the prior art.

The filter assembly of the water treatment device according to the present embodiment includes a connector 10 and a filter cartridge 30 detachably coupled thereto, as shown in FIGS. 2 and 3, wherein the connector 10 is disposed on one side. The raw water inlet pipe 12 is provided, the other side is provided with the purified water outlet pipe 14, the lower surface is open structure is provided with a valve means in the raw water inlet pipe 12.

The valve means is a plunger 16 fluidly mounted to be in close contact with or separated from the valve seat surface 121 formed in the raw water inlet pipe 12, and a spring for elastically pressing the plunger 16 to one side ( 18).

The filter cartridge 30 includes a housing 32 having a head 321 coupled to the connector 10 at an upper end thereof, an inner case 34 provided in the housing 32, and an inner case ( 34 is formed of a hollow fiber membrane filter element 36, and in the housing 32, the raw water inlet 38a is formed in both directions facing each other through the side of the head portion 321, and the raw water inlet ( A suction guide 38 for forming 38b) is provided.

The inner case 34 is a form in which the raw water inlet 38b of the suction guide 38 and the upper end thereof are connected to each other, and the bottom is opened, and the raw water injected from the suction guide 38 is filtered and then purified through the bottom. The bottom surface is formed to be open so that the discharge.

In addition, as in the related art, the outer side of the head portion 321 of the housing 32 is provided with a fastening wing 322 for fastening with the connector 10, and also a fastening wing 322 outside the head portion 321. The upper side is provided with a switching wing 323 for pressing the plunger 16 of the valve means in accordance with the rotation angle of the housing 32 to open or close the raw water inlet pipe 12 of the connector 10.

In addition, upper and lower O-rings 381 for maintaining airtightness between the head part 321 and the connector 10 are provided above and below the raw water inlet 38a of the suction guide 38.

The inner case 34 is formed of a structure having an outer fixing particle 341 which surrounds the lower circumference of the lower end of the inner case 34, and the filler 39 supporting the hollow fiber membrane filter element 36 has an inner case 34. Unlike the prior art, the tip of the filter element 36 is disposed at the bottom of the inner case 34, and has a structure supported by the filler 39 at the bottom of the inner case 34.

In addition, the filler 39 is partially mounted to protrude further below the lower end of the inner case 34 so as to be fitted between the outer fixing granules 341 and the lower end of the inner case 34.

Referring to the operation of the filter assembly according to the present embodiment as described above are as follows.

First, in the state in which the filter cartridge 30 is coupled to the connector 10, the switching wing 323 presses the plunger 16 in the raw water inlet pipe 12, as shown in FIG. Raw water is introduced through the raw water inlet pipe 12 by being spaced apart from the surface 121.

The introduced raw water is introduced into the raw water inlet 38a of the suction guide 38 through the space formed between the connector 10 and the head portion 321, and then continuously introduced into the inner case 34 from the raw water inlet 38b. Thus, the hollow fiber membrane filter element 36 passes through.

That is, according to this embodiment, the so-called raw water flow path leading from the connector 10 into the inner case 34 is shorter in distance than the conventional raw water flow path (formed as a gap between the housing and the inner case), and is enlarged without a sudden change in the area. Since it is maintained in the form of the raw water, the inflow pressure decreases in the course of the raw water inflow, so that the phenomenon of low permeability does not occur.

In addition, although the purified water discharged from the inner case 34 flows through a relatively narrow purified water passage formed of a gap between the housing 32 and the inner case 34, since the pressure loss in the process of passing through the raw water passage is small. In the purified water flow path, the water flow is hardly affected by the pressure loss.

Therefore, according to this embodiment, the supply of purified water is made smoothly and stably.

When the filter cartridge 30 is rotated to separate the filter cartridge 30 from the connector 10, the pressing state of the plunger 16 is released by the switching wing 323 as in the related art (see FIG. 4B), whereby the plunger ( 16 is pressed by the spring 18 to be in close contact with the valve seat surface 121, so that the raw water inlet pipe 12 is automatically kept closed.

In addition, according to the present embodiment, the filler 39 is formed to completely surround the lower end of the inner case 34, and the filler 39 is formed by the outer fixing granules 341 formed on the outer side of the inner case 34. Since the mounting state of the becomes more firm, there is no gap between the inner surface of the inner case 34 and the filler 39.

Therefore, a gap is generated between the filler and the inner case as in the prior art, so that the raw water that does not pass through the filter element is discharged as it is.

According to the filter assembly of the water treatment device according to the present invention as described above, since the pressure loss in the raw water flow path connected to the raw water inlet pipe of the connector is made less smooth supply of purified water, coupling the filler and the inner case This stiffness has the advantage of helping to improve the operating efficiency and stability of water treatment equipment, such as preventing the leakage of raw water.

Claims (2)

Raw water inlet pipe is provided on one side and the purified water outlet pipe is provided on the other side and the bottom is made of an open structure, the connector provided with a valve means inside the raw water inlet pipe, The head portion coupled to the connector is composed of a housing configured at the upper end, an inner case provided in the housing, a hollow fiber membrane filter element embedded in the inner case, a filler for supporting the filter element, and a valve means of the connector; Filter cartridge made of interlocking structure, In the filter assembly of the water treatment device comprising; In the housing of the filter cartridge is provided with a suction guide for forming the raw water inlet in both directions facing each other through the side of the head, and the raw water inlet downward, The inner case has a form in which a raw water inlet of the suction guide is connected to an upper end thereof, and the bottom surface is opened so that raw water injected from the suction guide is filtered and then purified water is discharged through the bottom. The purified water discharged through the bottom of the inner case flows through the gap between the housing and the inner case and is discharged through the head of the housing. Filter assembly for water treatment equipment. The method of claim 1, The inner case is made of a structure provided with an outer fixing lip surrounding the bottom circumference to the outside, The filler is disposed in the inner bottom of the inner case, it is mounted more protruding down than the inner case is fitted in the form of being sandwiched between the outer fixing and the inner case bottom. Filter assembly of a water treatment device, characterized in that.

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