KR20140042493A - A water purifier - Google Patents

Abstract

The present invention relates to a water purifier which comprises the following: a filter cartridge installed on a flow path of raw water for purifying the raw water; and at least one valve controlling the flow path of raw water. The valve includes: a valve body including a flow path for inserting and discharging the raw water; and a flow path controlling member installed inside the valve body to be rotated, and being rotated by the rotation of the filter cartridge for attachment and detachment of the filter cartridge and controlling the flow path.

Description

A water purifier {A WATER PURIFIER}

The present invention relates to a water purifier.

Water purifier is a device that purifies by removing impurities contained in water. Such water purifiers are classified into natural filtration, direct filtration, distillation, reverse osmosis, etc. according to the water purification method. At present, the most commonly used is a direct water purifier, which is an integer by the filter.

The water purifier using such a filter is provided with a filter for purifying the raw water and a water tank for collecting purified water by the filter, and a heater or a cooling system for supplying cold water or hot water may be further provided in some cases.

Examples of the filter include a sediment filter (sediment filter) for removing macroscopic foreign substances such as rust, soil, sand, and suspended solids contained in raw water (tap water, ground water, etc.) pre-carbeon filter to remove residual chlorine components such as trihalomethanes by adsorption method using activated carbon made by burning coal minerals or palm trees at high temperature, polyamide (Membrane filter or reverse osmosis filter (R / O)) which removes various pollutants, bacteria, inorganic substances, heavy metals and the like in the water through fine pores equivalent to 0.0001 microns by the membrane, And a post-carbon filer for removing the same foreign substance.

In the conventional water purifier, when replacing a filter, an external water source such as a faucet or the like connected to raw water is first cut off and then the filter is separated from the adapter. In this case, There has been a problem of leakage to the outside through the connection portion between the filter and the adapter.

The object of the present invention is to provide a water purifier in which the inflow of raw water is automatically blocked when the filter cartridge is replaced.

Another object of the present invention is to provide a water purifier provided with a plurality of filter cartridges and having a valve for preventing leakage of raw water between filter cartridges to prevent leakage of raw water even if any of the filter cartridges are separated from each other And to provide a water purifier.

The water purifier of the present invention comprises a filter cartridge provided on a flow path of raw water to purify raw water; And at least one valve for interrupting the raw water flow path, wherein the valve comprises: a valve body having a flow path for the inflow or outflow of raw water; And a flow path interrupting member which is rotatably provided inside the valve body and is rotated together with a rotation operation for attaching and detaching the filter cartridge, and interrupts the flow path.

Alternatively, the water purifier of the present invention comprises at least one filter cartridge for purifying raw water; And a first valve coupled to the filter cartridge to intermittently supply raw water supplied into the filter cartridge, wherein the first valve includes an inlet through which raw water flows, a first valve through which an outlet for discharging raw water to the filter cartridge is formed, body; And a first flow path interrupting member which is rotatably provided inside the valve body and is rotated together with a rotation operation for attaching / detaching the filter cartridge, and interrupts the inlet.

The water purifier of the present invention has the effect of automatically shutting off the inflow of raw water according to the rotation operation for replacing the filter cartridge.

Further, the water purifier of the present invention has an effect that the leakage of the raw water can be blocked even if any of the plurality of filter cartridges is separated.

Further, according to the water purifier of the present invention, the flow path interrupting member is also rotated together with the rotation operation for replacing the filter cartridge, and the flow path of the raw water is interrupted. Particularly, since the user directly provides the driving force for rotating the flow path interrupting member, The structure is very simple, but a reliable intermittent function is guaranteed.

Further, since the water purifier of the present invention is provided with the packing on the outer peripheral surface of the flow path interrupting member, it is effective for interrupting inflow or outflow of the raw water along the radial direction perpendicular to the longitudinal direction of the flow path interrupting member.

1 is a perspective view illustrating a water purifier according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a filter assembly applied to the water purifier of FIG. 1; FIG.
3 is a cross-sectional view taken along AA of FIG.
4 is a cross-sectional view taken along line BB in Fig.
5A shows a state in which the first filter cartridge is mounted.
Fig. 5B shows a state in which the first filter cartridge is rotated to replace the first filter cartridge.
6A shows a first valve.
Fig. 6B shows the first flow path regulating member shown in Fig. 6A.
Fig. 7A shows the second valve.
Fig. 7B shows the second flow path regulating member shown in Fig. 7A.
8A shows a third valve.
8B shows the flow path interrupting member shown in FIG. 8A.
8C is an exploded perspective view of the third valve body shown in FIG. 8A.
8D is a cross-sectional view of the third valve body cut along CC of FIG. 8C.
9A is a perspective view showing the second filter head.
FIG. 9B is a cross-sectional view taken along line DD of FIG. 9A. FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

1 is a perspective view illustrating a water purifier according to an embodiment of the present invention. 1, a water purifier 1 according to an embodiment of the present invention includes a main body 2, input means such as a button for receiving various control commands from a user, A control panel 3 provided with a display means for displaying various information indicating the operation state of the water purifier, and a lever 4 operated by a user to take purified water through a water intake hole (not shown) .

FIG. 2 is a perspective view showing a filter assembly applied to the water purifier of FIG. 1; FIG. 3 is a cross-sectional view taken along line A-A in Fig. 4 is a cross-sectional view taken along line B-B in Fig.

2 to 4, the water purifier 1 may include a plurality of filters. These filters include a sediment filter, a pre-carbon filter, a membrane filter or reverse osmosis filter (R / O), a post-carbon filer, etc. . ≪ / RTI >

Hereinafter, the water purifier 1 is provided with a first filter cartridge 10 having a pretreatment carbon filter 11, a second filter cartridge 20 having a reverse osmosis filter 21, and a post-treatment carbon filter 31 And the third filter cartridge 30, but the kind, number, and arrangement order of the filter cartridge or the filter are not necessarily limited thereto.

The pretreatment carbon filter 11 is a carbon material calcined at a high temperature using raw materials such as coconut shell, wood, and coal, and is composed of an aggregate of amorphous activated carbons having fine pores of a molecular size in the activation process. Granular activated carbon (GAC), powder activated carbon (PAC), and activated carbon fiber (ACF). The raw materials include palm oil, wood, sawdust, charcoal, Anthracite, lignite, and coal, petroleum residues using petroleum residues, sulfuric acid sludge, and oil carbon.

The reverse osmosis filter 21 forcibly performs reverse osmotic pressure so that raw water (hereinafter referred to as raw water before purified water treatment is completed by all the filters) is moved from the higher impurity concentration in the water to the lower one to purify In the manner of water pressure, that is water, the water passes through a filter membrane consisting of an extremely fine porous structure, but the pollutant is filtered without passing through the filter membrane. In the case of the water purification system using the reverse osmosis filter 21, it is difficult to apply a sufficient hydraulic pressure only by the natural pressure or the water pressure depending on the case, so that a separate water storage tank separate from the pressure pump can be further provided.

The reverse osmosis filter 21 may be made of TFC (Thin Film Composite), that is, a multiple layer thin film filter film composite. Such a TFC material may include an ultra-thin dense layer and a porous substrate layer, the density layer is polyamide, and the porous substrate layer is polysulfone. ) As the main raw material.

According to the embodiment, the reverse osmosis filter 21 may include a low pressure type reverse osmosis membrane (Nano Filtration-Low Pressure), and the pore size of the membrane surface may be adjusted so that the water- (Ultrafiltration Membrane) membrane, which is smaller than the reverse osmosis membrane and has a size of 0.0001 to 0.001 micron smaller than UF (Ultrafiltration Membrane) membrane.

On the other hand, when the raw water passes through the reverse osmosis filter 21, almost all the impurities are removed, but once the post-treated carbon filter 31 is again passed, the gas component and the odor component dissolved in the water are removed, . The post-treatment carbon filter 31 is configured substantially the same as the pretreatment carbon filter 11, and may be formed of, for example, an aggregate of activated carbon.

The water purifier 1 according to an embodiment of the present invention includes a first filter cartridge 10, a second filter cartridge 20 and a third filter cartridge 30 that are purified when the raw water passes in sequence. Each of the filter cartridges is provided with a filter according to its use. Hereinafter, the pretreatment carbon filter 11 is attached to the first filter cartridge 10, the reverse osmosis filter 21 is attached to the second filter cartridge 20, The post-treatment carbon filter 31 is provided in the water purifier 30, but the number, type, and connection order of the filter cartridges included in the purifier of the present invention are not necessarily limited thereto.

The first filter cartridge 10 includes a filter accommodating portion 12 in which a pretreatment carbon filter 11 is housed and a first filter head 70. According to the embodiment, the filter accommodating portion 12 may be composed of a plurality of members coupled to each other, and the filter accommodating portion 12 according to the present embodiment may provide a certain space for accommodating the raw water and the filter 11 And a receiving portion cap 12b detachably coupled to the receiving portion main body 12a so as to facilitate the removal of the filter 11 into the receiving portion main body 12a. The filter accommodating portion 22 of the second filter cartridge 20 may include the accommodating portion main body 22a and the accommodating portion cap 22b and the filter accommodating portion 32 of the third filter cartridge 30, The receiving portion main body 32a and the receiving portion cap 32b.

On the other hand, the cover portion 50 is detachably coupled to the respective filter heads 70, 80 and 90 so as to surround the outer shapes of the filter heads 70, 80 and 90.

The first filter head 70 includes an inlet 73 into which the raw water supplied into the filter accommodating portion 12 flows and an outlet 73 through which the raw water filtered by the filter 11 is discharged to the second filter cartridge 20 side 75).

The water purifier 1 according to the present embodiment is provided with the adapters 50 corresponding to the number of the filter cartridges 10, 20 and 30 and each of the adapters 50 is provided with a corresponding filter cartridge . In this embodiment, the adapters 50 are substantially all of the same configuration. The filter cartridge is rotatably supported by the adapter 50 and is detached from the adapter 50 through an operation of lifting the filter cartridge at the time of replacement. For example, in FIGS. 5A-5B an adapter 50 is illustrated in which the first filter cartridge 10 is mounted. The adapter 50 includes a pair of side wall portions 51a and 51b formed in parallel with each other. The side wall portion 51a is formed with a support groove into which the first valve 100 is inserted, 52 are removably coupled to the support groove to prevent the first valve 100 from being disengaged from the support groove. Similarly, the side wall portion 51b is formed with a support groove into which the second valve 200 is inserted, and the release preventing member can be detachably coupled to the support groove. Either one of the side wall portions 51a and 51b of the adapter 50 on which the second filter cartridge 20 or the third filter cartridge 30 is mounted is provided with the corresponding filter cartridge (for example, the second filter cartridge (For example, the second valve 200) and the other one for supporting the valve for interrupting the raw water flowing into the next filter cartridge (for example, the third filter cartridge 80) (E.g., the third valve 300) that interrupts the flow of the fluid.

6A shows a first valve. Fig. 6B shows the first flow path regulating member shown in Fig. 6A.

6A and 6B, the first valve 100 interrupts the raw water flowing into the first filter cartridge 10. The first valve 100 is coupled to the inlet 73 side of the first filter head 70. The first valve 100 includes a first valve body 110 having an inlet 112 through which raw water flows and an outlet 113 through which the raw water is discharged and a first valve body 110 rotatably disposed inside the first valve body 110, And a first flow path interrupting member (120) for interrupting the inlet (112).

The first flow path interrupting member 120 is rotated together with the first filter head 70 in the rotating operation, and interrupts the inlet 112. The first flow path controlling member 120 includes a rotating member 121 which is integrally rotated with the first filter head 70 and a packing 125 provided on the outer circumferential surface of the rotating member 121. The pair of packing 125 may be provided symmetrically with respect to the rotational axis of the rotary member 121.

The first filter head 70 is coupled with the first flow path interrupting member 120 so that the first flow path interrupting member 120 can be integrally rotated in accordance with the rotation operation of the first filter head 70. [ . Here, the coupling or axial jointing may be defined as a coupling relationship in which power is transmitted from one side to the other side. In this embodiment, the first flow path interrupting member 120, when rotating the first filter head 70, To be rotated together. This coupling may be achieved by using various joining means such as a spline, a key, a pin and a cotter. In this embodiment, a protrusion 121b extending along the longitudinal axis of the rotary member 121, A pair of keys 121c are formed symmetrically and a pair of keyways (not shown) in which a pair of keys 121c are inserted are formed in the first filter head 70. [ 9B shows a keyway 83a formed in the second filter head 80. This structure is equally applicable to the first filter head 70 and the third filter head 90, The first filter head 70, the second filter head 80 and the third filter head 90 in the present embodiment are given different reference numerals, but they can have substantially the same structure for the common use of components .

5A and 6, when the first filter cartridge 10 is completely mounted, the packing 125 comes to a position to avoid the inlet 112, so that the inlet 112 is opened, Inflow occurs. The raw water flowing through the inlet 112 flows along the inner peripheral surface of the first valve body 110 and the outer peripheral surface of the first flow path member 120 and flows through the inlet 73 of the first filter head 70 And is supplied to the inside of the filter accommodating portion 12. The raw water thus supplied flows outward from the outside of the filter 11 and is filtered and then discharged through the discharge port 14 of the filter accommodating portion 12 so that the discharge port 75 of the first filter head 70 ≪ / RTI > Here, the first filter head 70 includes a movement path in which the raw water is guided from the inlet 73 to the inside of the filter accommodating portion 12, a movement path from the outlet 14 of the filter accommodating portion 12 to the first filter head 70, The movement path in which the raw water is guided to the discharge port 75 of the discharge port 75 is formed separately from each other. The flow path connecting member 44 connects the raw water supply pipe (not shown) supplied with raw water from the external water source and the inlet 112.

On the other hand, in order to smoothly flow the raw water through the space between the inner circumferential surface of the first valve body 110 and the outer circumferential surface of the first flow path member 120, the flow direction of the raw water is formed on the outer circumferential surface of the first flow path interrupting member 120 A flow groove 121a may be formed. These flow grooves 121a may be formed symmetrically with the packing 125 therebetween.

5B, when the first filter cartridge 10 is opened for replacement, the packing 125 hermetically closes the inlet port 112 formed on the inner circumferential surface of the first valve body 110 to block the inflow of raw water do. The packing 125 may be formed of a flexible material and may include a hermetic protrusion 125a protruding in a shape corresponding to the inlet port 112. [ The airtight protrusion 125a may be constrained to the inside of the inlet 112 or may be pressed on the inner circumferential surface of the valve body 110 to surround the inlet 112 differently.

Fig. 7A shows the second valve. Fig. 7B shows the second flow path regulating member shown in Fig. 7A. 9A is a perspective view showing the second filter head. FIG. 9B is a cross-sectional view taken along line D-D of FIG. 9A.

Referring to Figures 3, 4A, 4B and 7, the first filter cartridge 10 and the second filter cartridge 20 are connected to each other through a second valve 200.

The second valve 200 connects raw water that has passed through the first filter cartridge 10 so that it can flow into the second filter cartridge 20. The second valve 200 includes a second valve body 210 and a second flow path member 220.

The second valve body 210 is opened and closed in accordance with the rotation operation of the second flow path interrupting member 220 and the first inlet 212 through which the filtered raw water passes through the first filter cartridge 10, A first outlet 213 for guiding the raw water guided through the first separating passage 222 of the second flow path member 220 to the inlet end 47 side of the circulating flow passage, And a second inlet 214 through which the raw water discharged from the circulating flow path outlet end 48 flows.

The second flow path intermittent member 220 receives raw water through a connection portion 227 communicated with the discharge port 75 of the first filter head 70. The discharge port 75 of the first filter head 70 is opened in the connection portion 227 when the flow direction of the raw water is the forward direction (flow direction of the raw water passing through the filters in order and passing through the filter in turn) A check valve 41 for closing the discharge port 75 of the first filter head 70 can be inserted and supported. In this case, the raw water inflow hole 227a is formed so that the raw water can be introduced into the second flow path member 220 even in the state where the check valve 41 is inserted into the connection portion 227.

The second flow path member 220 is rotatably provided inside the second valve body 210 and is rotated together when the second filter cartridge 20 is replaced. The first outlet 213 and the second inlet 214 are interlocked according to the rotational position of the second flow path member 220. The second flow path regulating member 220 includes a rotating member 221 integrally rotated with the second filter head 80 and at least one packing 225 provided on the outer circumferential surface of the rotating member 221 . The packing 225 may be provided in a pair symmetrically with respect to the rotational axis of the rotating member 221. In this case, when the second filter cartridge 20 is lifted for replacement, The first outlet 213 is shut off and the other is blocked by the second inlet 214. Therefore, when the second filter cartridge 20 is replaced, the reverse flow of the raw water through the first outlet 213 or the inflow of the raw water through the second inlet 214 is blocked, thereby preventing the leakage of the raw water.

The packing 225 may be formed of a flexible material and each packing may include a hermetic protrusion 225a protruding in a shape corresponding to the first outlet 213 or the second inlet 214. The airtight protrusion 225a may be constrained to the inside of the first outlet 213 or the second inlet 214 or may be pressed against the inner circumferential surface of the second valve body 210 to surround the first outlet or the second inlet .

The second filter head 80 is coupled to the second flow path interrupting member 220 so that the second flow path interrupting member 220 can be integrally rotated in accordance with the rotation operation of the second filter head 80. [ . A pair of keys 221c symmetrical to the protruding portion 221b are formed in the second filter head 80 and a pair of keys 221c are formed in the second filter head 80. In this embodiment, And a pair of keyways 83a into which the key 221c is inserted are formed.

On the other hand, the second flow path member 220 includes a first separation passage 222 and a second separation passage 223 that are separated by the flow path separation plate 226 so that raw water does not mix with each other.

 The raw water introduced through the first inlet 212 of the second valve body 210 is moved along the first separation passage 222. At this time, since the first outlet 213 is opened in a state in which the second filter cartridge 20 is normally installed, raw water guided along the first separation channel 222 is circulated through the first outlet 213 And then flows into the circulating flow path through the inlet port 47a formed at the inlet end 47. [ A flow path interrupting means such as a solenoid valve (not shown) or an auto shut off valve (not shown) may be provided on the circulating flow path. The solenoid valve is provided on the circulating flow path between the first outlet 213 and the second inlet 214 so as to control the circulating flow path according to the pressure of the purified water passing through the first filter cartridge 10. According to the embodiment, a pressure switch (not shown) may be further provided to output a control signal to the solenoid valve according to the pressure of the purified water

On the other hand, according to the embodiment, an automatic shut-off valve may be provided in the circulation channel, which is a valve using the Pascal principle, and automatically stops the flow of raw water when the pressure of the purified water reaches the set pressure.

The raw water circulated along the circulating flow path is discharged through the discharge port 48a of the circulating flow path outlet end 48 under the control of the flow path interrupting means and the discharged raw water flows into the second separation flow path 223 again, 2 filter head 80 through the inlet 83.

That is, when the second filter cartridge 80 is normally installed, both the first outlet 213 and the second inlet 214 are opened so that the raw water flows into the first outlet passage 222, the first outlet 213, The second inlet 214, and the second separation passage 223 in this order to the second filter cartridge 20.

Conversely, in a state in which the second filter cartridge 20 is lifted for replacement, the rotated position of the second flow path interrupting member 220 is such that each of the pair of packings 225 is connected to the first outlet 213 and the second Both of the inlet port 214 and the outlet port 214 are hermetically sealed so that both the discharge of the raw water from the first separation passage 222 to the circulation channel and the introduction of the raw water into the second separation passage 223 from the circulation passage are blocked , The residual water remaining on the circulating flow path is prevented from flowing backward and leaking to the outside.

The second filter cartridge 20 includes a filter accommodating portion 22 in which the reverse osmosis filter 21 is accommodated, and a second filter head 80. The second filter head 80 has an inlet 83 into which the raw water supplied into the filter accommodating portion 22 flows and an outlet 83 through which the raw water filtered by the filter 21 is discharged to the third filter cartridge 30 side 85 are formed.

The raw water discharged from the second separation passage 223 of the second flow path member 220 flows through the inlet 83 of the second filter head 80 and the raw water thus introduced flows into the filter accommodating portion 22 Permeates the reverse osmosis filter 21 from the outside to the inside and is filtered, and the filtered raw water flows into the second filter head 80 through the outlet 24 of the filter accommodating portion 22 again.

9A and 9B, the second filter head 80 may be provided with a concentrated water discharge pipe 84 (see FIG. 9A) for discharging the concentrated water collected inside the filter accommodating portion 22 to the outside. The concentrated water discharged through the concentrated water discharge pipe 84 is discharged to the outside along a predetermined flow path, and a flow restrictor (not shown) for controlling the flow rate of the concentrated water to be discharged may be provided on the flow path.

On the other hand, the second filter head 80 is provided with a path for moving the raw water flowing into the filter accommodating portion 22 through the inlet 83 and a flow path for the concentrated water moved from the filter accommodating portion 22 to the concentrated water discharge pipe 84 The moving path and the moving path of the raw water filtered by the reverse osmosis filter 21 to the outlet 24 of the filter accommodating portion 22 are formed separately from each other. The second filter head 80 includes a raw water discharge pipe 87 which is connected to the discharge port 24 of the filter accommodating portion 22 and a raw water discharge pipe 87 which surrounds the raw water discharge pipe 87, And a concentrated water discharge pipe 84 that forms a movement path of the concentrated water between the outer circumferential surfaces of the concentrated water discharge pipe 87. The raw water and concentrated water flowing into the filter accommodating portion 22 from the inlet port 83, (84) without being mixed with each other.

The concentrated water discharge pipe 84 may extend in the upward direction of the second filter head 80 and the concentrated water discharge pipe 84 may be connected to the concentrated water discharge channel And is connected to the exhaust port. The connecting member may be formed of a universal joint including at least two elbows 49a and 49b. In this case, not only a narrow space inside the adapter 50 can be effectively utilized, 2 rotation of the filter cartridge 20 can be performed more smoothly.

8A shows a third valve. 8B shows the flow path interrupting member shown in FIG. 8A. 8C is an exploded perspective view of the third valve body shown in FIG. 8A. 8D is a cross-sectional view of the third valve body cut along C-C of FIG. 8C. 3, 4 and 8A to 8D, the second filter cartridge 20 and the third filter cartridge 30 are connected to each other through the third valve 300. [

The third valve 300 is connected to the second filter cartridge 20 so that the filtered raw water can flow to the third filter cartridge 30. The third valve 300 includes an inlet 312 through which raw water having passed through the second filter cartridge 20 flows and an outlet 313 through which the raw water introduced through the inlet 312 is discharged to the third filter cartridge 30 The third valve body 310 is rotatably disposed inside the third valve body 310 and controls the flow of the raw water from the inlet 312 to the outlet 313 according to the rotational position of the third valve body 310. And a flow path interrupting member 320.

More specifically, the third valve body 310 includes a tube portion 311 partitioned into an inlet-side space 312a and an outlet-side space 313a by a separation wall 317 and a tube portion 311 formed outwardly from the tube portion 311 And a flow path forming portion 315 that forms a flow path so that the raw water can be moved from the inlet side space 312a to the discharge side space 313a. The flow path forming portion 315 communicates with the inlet port side space 312a through the flow path forming portion inlet 316a and communicates with the outlet port side space 313a through the flow path forming portion outlet port 316b.

In addition, the check valve support 318 may be protruded from the separation wall 317 to the inflow space 312a. A check valve 42 for interrupting the discharge port 85 of the second filter head 80 can be slidably installed inside the check valve support 318 in accordance with the flow direction of the raw water.

The flow path interrupting member support portion 319 may be protruded from the separation wall 317 to the discharge space 313a. In this case, the third flow path interrupting member 320 is extruded into the flow path interrupting member support portion 319.

The third flow path regulating member 320 is rotated together with the third filter head 90 during the rotation operation, and the flow path forming portion outlet 316b is interlocked. The third flow path regulating member 320 includes a rotating member 321 which is integrally rotated with the third filter head 90 and a packing 325 provided on the outer circumferential surface of the rotating member 321. The packings 325 may be provided symmetrically with respect to the rotational axis of the rotating member 321. [

The third filter head 90 is coupled and coupled with the flow path interrupting member 310 so that the third flow path intermittent member 320 can be rotated integrally with the third filter head 90 . In this embodiment, a protrusion 321b extending along the longitudinal axis of the rotary member 321 and a pair of keys 321c symmetrical to the protrusion 321b are formed. In the third filter head 90, And a pair of keyways (not shown) into which the key 321c is inserted are formed.

The third flow path regulating member 320 interrupts the flow path forming outlet 316b. The packing 325 comes to a position where the flow path forming portion outlet 316b is avoided in the state in which the third filter cartridge 30 is normally mounted and therefore the raw water flows through the flow path forming portion outlet 316b to the discharge port side space 313a. The third flow path member 320 is formed on the outer circumferential surface of the third valve body 310 so as to smoothly flow the raw water through the space between the inner circumferential surface of the third valve body 310 and the outer circumferential surface of the third flow path member 320, The flow grooves 321a may be formed. These flow grooves 321a may be formed symmetrically with the packing 325 therebetween.

The packing 325 airtightly closes the passage forming portion outlet 316b so that the flow of the raw water from the inlet space 312a to the outlet space 313a can be maintained in a state in which the third filter cartridge 30 is lifted for replacement, . The packing 325 may be formed of a flexible material and may include a protrusion 325a protruding in a shape corresponding to the outlet 316b of the flow path forming portion. The airtight protrusion 325a may be forced into the flow path forming portion outlet 316b or may be pressed on the inner circumferential surface of the valve body 310 to surround the flow path forming portion outlet 316b.

8D, the flow path forming portion 315 includes a tubular projecting portion 315a protruding from the outer circumferential surface of the tube portion 311 and forming a flow space of raw water inward, and a tubular projecting portion 315a coupled to one end of the projecting portion 315a And an opening cover 315b. A sealing member 315c for sealing the space between the protrusion 315a and the opening cover 315b may be further provided and an open end of the protrusion 315a may be provided with a seating groove 315c for seating the soft sealing member 315c 315d may be formed. The leakage of the raw water can be reliably prevented by inserting the sealing member 315c into the seating groove 315d and then joining the opening cover 315b to the projection 315a by the heat welding method.

The third filter cartridge 30 includes a filter accommodating portion 32 in which a post-treatment carbon filter 31 is housed, and a third filter head 90.

The filter accommodating portion 32 may include a plurality of members coupled to the filter accommodating portion 32. The filter accommodating portion 32 according to the present embodiment includes a receiving portion main body And an accommodating portion cap 32b detachably coupled to the accommodating portion main body 32a so as to facilitate removal of the filter 31 into the accommodating portion main body 32a.

The third filter head 90 includes an inlet 93 into which the raw water supplied into the filter accommodating portion 32 flows and an outlet 95 through which the purified water purified by the filter 31 is discharged. The purified water filtered by the after-treatment filter member 31 is discharged through the discharge port 34 of the filter accommodating portion 32 and discharged again through the discharge port 95 of the third filter head 90, It becomes drinking.

On the other hand, an adapter connecting member 45 can be coupled to the outlet 95 side of the third filter head 90. The third filter head 90 is attached to one of the opposite side wall portions 51a of the adapter 50 by the third valve 300 and the other side wall portion 51b is connected by the adapter connecting member 45, Respectively. The inlet of the adapter connecting member 45 may be provided with a check valve 43 for interrupting the discharge port 95 of the third filter head 90.

The flow path connecting member 46 connects the adapter connecting member 45 and the purified water supply pipe (which is a pipe for guiding purified water so that the user can drink). The purified water discharged from the discharge port 95 of the third filter head 90 flows into the adapter connecting member 45 and flows into the purified water supply pipe through the flow path connecting member 46.

Claims (16)

A filter cartridge provided on the flow path of the raw water to purify raw water; And
At least one valve interrupting the raw water flow path,
Wherein the valve comprises:
A valve body having a flow path for inflow or discharge of raw water; And
The water purifier includes a flow path intermittent member rotatably provided inside the valve body and rotated together in accordance with a rotational operation for attaching and detaching the filter cartridge. The method according to claim 1,
The flow path intermittently-
A rotating member which is rotated integrally with the filter cartridge; And
And a packing provided on an outer circumferential surface of the rotary member to seal the flow path. 3. The method of claim 2,
Wherein the packing is formed of a flexible material. The method of claim 3, wherein
Wherein the packing has a hermetic projection having a shape corresponding to an inlet or outlet of a flow path formed in the valve body. 3. The method of claim 2,
The flow path intermittently-
The packing is located so as to avoid the inlet or the outlet at a position where the mounting of the filter cartridge is completed so that the raw water is moved between the outer peripheral surface of the rotary member and the inner peripheral surface of the valve body,
Wherein the packing seals the inlet or outlet at a rotated position for replacement of the filter cartridge. 3. The method of claim 2,
Wherein the rotating member and the filter cartridge are coupled and coupled to each other. 3. The method of claim 2,
Wherein the valve body comprises:
A first inlet through which raw water flowing into the filter cartridge flows;
A first outlet for discharging the raw water flowing through the first inlet through a predetermined circulation channel;
And a second inlet through which the raw water discharged through the first outlet flows along the circulation channel and flows back,
The flow path intermittently-
And a flow path separator for separating the flow path from the raw water flowing through the second inlet and the raw water flowing through the first inlet. The method according to claim 1,
A plurality of the filter cartridges are provided so that raw water flows from the filter cartridges disposed at the front end through the valves to the filter cartridges disposed at the rear end,
Wherein the valve comprises:
And controls the flow of the raw water from the filter cartridge disposed at the front end to the filter cartridge disposed at the rear end in accordance with the rotation operation for replacing the filter cartridge disposed at the rear end. At least one filter cartridge for purifying raw water; And
And a first valve coupled to the filter cartridge to interrupt raw water supplied into the filter cartridge,
Wherein the first valve comprises:
A first valve body having an inlet for introducing raw water and an outlet for discharging raw water to the filter cartridge; And
The water purifier is rotatably provided inside the valve body, and rotated together in accordance with a rotational operation for detaching the filter cartridge, the water purifier including a first flow path blocking member for controlling the inlet. The method of claim 9,
A plurality of filter cartridges are provided,
Further comprising a second valve connecting raw water between adjacent ones of the filter cartridges so as to flow,
Wherein the second valve comprises:
A first outlet port through which the raw water having passed through the filter cartridge disposed at the front end flows, a first outlet port through which the raw water introduced through the first inlet port is discharged through a predetermined circulating flow path, A second valve body having a second inlet formed therein for circulating and then entering the second valve through the circulation channel; And
And a second flow path interrupting member rotatably provided inside the second valve body and having a flow path separating plate for separating the flow path so that the raw water introduced through the second inflow port does not mix with the raw water introduced through the first inflow port, Including,
The second flow path regulating member
The water purifier rotates together according to a rotation operation for detaching and removing the filter cartridge disposed at the rear end, and controls the discharge of raw water through the first outlet and the inflow of raw water through the second inlet. 11. The method of claim 10,
The second flow path regulating member
A rotary member which is integrally rotated with the filter cartridge disposed at the rear end; And
And a pair of the outer circumferential surfaces of the rotating member, and each of the first and second outlets is sealed to seal the first outlet and the second inlet. The method of claim 9,
A plurality of filter cartridges are provided,
Further comprising a third valve connecting raw water between adjacent ones of the filter cartridges so as to flow,
Wherein the third valve comprises:
And a filter cartridge disposed at a downstream end of the filter cartridge, the filter cartridge being disposed at a downstream end of the filter cartridge. 13. The method of claim 12,
Wherein the third valve comprises:
An inlet through which the raw water having passed through the filter cartridge disposed at the front end flows; And
A third valve body having a discharge port for discharging the raw water introduced through the inlet port to the filter cartridge disposed at the rear end; And
And a third flow path interrupting member that is rotated together with the filter cartridge disposed at the rear end from the inside of the third valve body and interrupts the outlet according to the rotational position. 14. The method of claim 13,
Wherein the third valve body comprises:
A tube portion partitioned into an inlet side space and an outlet side space by a separation wall;
And a flow path forming portion protruding from the tube portion to form a flow path so that the raw water can be moved from the inlet side space to the outlet side space,
Wherein the third flow path regulating member includes:
And an outlet of the flow path forming portion through which the raw water is discharged from the flow path forming portion to the discharge port side space. The method of claim 9,
The filter cartridge includes:
Reverse Osmosis Filter;
A filter accommodating portion having the reverse osmosis filter therein; And
A raw water discharge pipe through which the raw water purified by the reverse osmosis filter is discharged and a concentrated water discharge pipe for discharging the concentrated water collected in the filter receiving portion to the outside,
Wherein the concentrated water discharge pipe
And a water purifier disposed above the filter housing. 16. The method of claim 15,
The filter head includes:
And a concentrated water discharge pipe formed around the periphery of the raw water discharge pipe and forming a path of concentrated water between the inner peripheral surface of the self water discharge pipe and the outer peripheral surface of the raw water discharge pipe.

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