KR102507948B1 - Flow path switching valve and Water treatment apparatus having the same - Google Patents

Abstract

An object of the present invention is to provide a flow path switching valve capable of simplifying the structure by reducing the number of components and at the same time easily and accurately performing the switching operation of the flow path and a water treatment device equipped with the same.
The flow path switching valve of the present invention for implementing this includes a valve body having a plurality of inlets connected to different flow paths and an outlet through which the fluid introduced through the inlets is discharged; a rotator rotatably provided inside the valve body to form a connection passage such that one of the plurality of water inlets selectively communicates with the water outlet according to a rotated position; and a valve cover coupled to the valve body to rotatably support the rotator, wherein the connection passage is formed along an outer circumference of the rotator.

Description

Flow path switching valve and water treatment apparatus having the same {Flow path switching valve and Water treatment apparatus having the same}

The present invention relates to a flow path switching valve and a water treatment device having the same, and more particularly, to a flow path switching valve for selectively connecting a flow path connected to a plurality of inlets to an outlet by a rotational operation and a water treatment device having the same. .

Water treatment devices such as water purifiers are made to remove heavy metals and other harmful substances contained in raw water through processes such as precipitation, filtration, sterilization, and adsorption of raw water such as tap water. It is also widely used for cleaning of scientific industries or ultra-precision electronic parts or for medical purposes.

Conventional water purifiers were configured with only one cock valve to supply only purified water for use by users, but in recent years, water purifiers are equipped with heaters and coolers so that users can selectively use purified water, cold water, and hot water.

In this way, as the range of choices of water types that can be used by users in water purifiers increases, it is necessary to implement a complex flow path for supplying purified water, cold water, and hot water. To implement such a flow path, a plurality of tubes and fittings connecting them are required. In addition to having to use it, there is a problem that the leak point increases. To solve this problem, a device for selectively switching a plurality of different flow paths using one valve is required.

Republic of Korea Patent Publication No. 10-2012-0109715 has been disclosed as such a conventional flow path conversion valve. A conventional flow path switching valve has three inlets and one outlet, and is configured so that water in different states is discharged according to the selected angle when the rotating part is rotated at 90 °, 180 °, and 270 °. .

However, according to this configuration, since a stepping motor is used to rotate the pivoting part, the unit price is high, and since seal protrusions are provided around the opening to maintain watertightness of the opening formed in the pivoting part, it is difficult to implement a sealing structure, There is a problem with poor assembly.

In addition, in the case of implementing a manual method in which a user manually switches a channel, it is difficult to implement a structure in which a user can recognize that a channel switching operation has been completed.

In addition, when the rotating part rotates, only one inlet must be accurately positioned in the corresponding opening. However, if two inlets are positioned to communicate partly over the corresponding opening due to a malfunction, one inlet from one inlet to the other inlet. There is a problem with water flowing back into the part.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a flow path switching valve capable of simplifying the structure by reducing the number of components and at the same time performing the switching operation of the flow path simply and accurately.

Another object of the present invention is to provide a water treatment device equipped with a flow path switching valve capable of preventing leakage due to reverse flow of fluid by blocking the inflow of fluid between a plurality of inlets while ensuring that the flow path is accurately switched.

The flow path switching valve of the present invention for realizing the above object is a valve body having a plurality of inlets connected to different flow paths and an outlet through which the fluid introduced through the inlets is discharged; a rotator rotatably provided inside the valve body to form a connection passage such that one of the plurality of water inlets selectively communicates with the water outlet according to a rotated position; and a valve cover coupled to the valve body to rotatably support the rotator, wherein the connection passage is formed along an outer circumference of the rotator.

The connection passage may include connection holes corresponding to the plurality of inlets and connection grooves connecting the connection holes and the water outlet.

The plurality of inlets are formed spaced apart in the circumferential direction on the rear surface of the valve body, the water outlet is formed on one side of the valve body, and the connection hole is formed through the rear surface of the rotator in the front and rear directions, the The connection groove may be formed to communicate with the outer surface of the rotator in a circumferential direction.

A locking protrusion may be formed on one side of the rotator, and a first locking protrusion and a second locking jaw may be formed on the valve body to allow the locking protrusion to be hung to limit a rotation radius of the rotator in both directions.

When the rotator is rotated in one direction and the protrusion is caught on the first protrusion, the inlet located on one side of the plurality of inlets is in communication with the connection passage and the outlet, and the rotator is rotated in the opposite direction so that the protrusion is When caught by the second locking jaw, an inlet located on the other side of the plurality of inlets may be in communication with the connection passage and the water outlet.

A locking protrusion is formed on one side of the rotator, and the valve cover is caught on the locking protrusion by the rotation of the rotator, is elastically displaced, and then restored while generating a contact sound, thereby generating a flow path by rotation of the rotator in one direction or in the opposite direction. It may be that the first hook part and the second hook part are formed to recognize that the conversion has been completed.

A plurality of fastening protrusions may be formed on one of the valve body and the valve cover, and a plurality of fastening rings engaged by the fastening protrusion may be formed on the other of the valve body and the valve cover.

Sealing members for maintaining watertightness may be provided between the plurality of inlets and the rotator, and between the valve body and the rotator, respectively.

The water treatment device of the present invention includes a first flow path connecting a cold water outlet pipe through which cold water is supplied and a first outlet pipe; a second flow path connecting a purified water outlet pipe through which purified water is supplied and the first outlet pipe; a flow path switching valve provided at an intersection of the cold water outlet pipe and the purified water outlet pipe to switch a flow path in order to supply one of the cold water and purified water to the first water outlet pipe; A first storage tank in which cold water supplied to the cold water outlet pipe is stored, wherein the flow path switching valve includes an operating section in which cold water or purified water is discharged through the first or second flow path, and the first It consists of including a non-operating section in which both cold water and purified water exiting through the passage and the second passage are blocked.

The first storage tank may be equipped with a ball top that mechanically blocks the inflow of water when the water level reaches a certain level.

The rotator may be rotated by a user's manual manipulation.

According to the flow path switching valve of the present invention, a valve body having a plurality of inlet ports and one outlet port, and a connection passage for selectively connecting one of the plurality of inlet ports to the outlet port by rotation operation is formed along the side circumference of the rotator, And by comprising a valve cover for rotatably supporting the rotator, it is possible to simplify the structure of the flow path switching valve.

In addition, a locking protrusion is formed on the side of the rotator, and the valve cover is provided with a first hook portion and a second hook portion that generate a contact sound while being elastically displaced and restored by interference with the protrusion, so that the user can select a flow path using the rotator When rotating, it can be easily recognized that the passage has been switched, so that the passage can be accurately switched.

In addition, by providing a non-operation section in which the flow of fluid is blocked between a plurality of inlets and outlets within the radius of rotation of the rotator, the inflow of fluid between the plurality of inlets is blocked to prevent leakage due to reverse flow of fluid.

In addition, by maintaining watertightness by fastening sealing members between the first inlet and the valve body, between the second inlet and the valve body, and between the valve body and the rotator, it is possible to effectively block leakage while minimizing the number of installation of sealing members, The coupling operation of the sealing member can be performed easily.

In addition, the fastening structure between the valve body and the valve cover can be simplified by providing fastening protrusions and fastening rings on the valve body and the valve cover so as to be locked and fixed.

On the other hand, according to the water treatment device of the present invention, by providing a non-operation section in which the flow of fluid is blocked between a plurality of inlets and outlets within the radius of rotation of the rotator, the inflow of fluid between the plurality of inlets is blocked to Water overflow of the first storage tank can be prevented.

1 is a perspective view of a flow path switching valve of the present invention;
2 is an exploded perspective view of the flow path switching valve of the present invention;
Figure 3 is (a) a front view, (b) a cross-sectional view along the AA line of the flow path switching valve of the present invention;
Figure 4 is (a) a front view, (b) a side view of the valve body,
5 is (a) a front view, (b) a side view, (c) a rear view, (d) a plan view of a rotator;
Figure 6 is (a) a perspective view, (b) a cross-sectional view showing the flow of fluid in the rotator,
7 is a perspective view of a combination of a valve body and a rotator;
8 is (a) a front view, (b) a side view, (c) a rear view, (d) a plan view of the valve cover;
9 is an operating state diagram showing a flow path switching process by rotation of a rotator;
10 is (a) a front view of the valve body and the rotator, (b) a perspective view of the valve body, showing the rotation radius of the rotator;
11 is a view showing an operating section and a non-operating section of the flow path switching valve of the present invention;
12 is a view showing the configuration of a water treatment device equipped with a flow path switching valve of the present invention.

Hereinafter, the configuration and operation of a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3, the flow path switching valve 100 of the present invention has a plurality of inlets 112 and 113 connected to different flow paths and an outlet 114 through which the fluid introduced through the inlets 112 and 113 is discharged. Formed valve body 110, and a connection passage rotatably provided inside the valve body 110 so that any one of the plurality of inlet ports 112 and 113 selectively communicates with the outlet port 114 according to the rotated position. It includes a rotator 120 forming a, and a valve cover 130 fastened to the valve body 110 to rotatably support the rotator 120, the connection passage is the outer circumference of the rotator 120 is formed along

Referring to FIG. 4, the valve body 110 includes a cylindrical body 111 having a front surface open and having a space 111a in which the rotator 120 is accommodated, and the first inlet 112 and the 2 The water inlet 113 protrudes from the rear surface of the main body 111 and penetrates in the front and rear directions, and the water outlet 114 protrudes from the side surface of the main body 111 and penetrates.

The first inlet 112 and the second inlet 113 have the same radius from the center of the main body 111 and are connected to different flow paths. For example, cold water flows into the first inlet 112, The second inlet 113 may be configured so that purified water flows into it. The inlets 112 and 113 are composed of a first inlet 112 and a second inlet 113, but may be configured to include three or more.

The first sealing member mounting portion 112a and the second sealing member 112a and the second sealing member 140 and the second sealing member 150 can be seated around the first inlet 112 and the second inlet 113. Member mounting portions 113a are formed, respectively.

The water outlet 114 provides a flow path through which either one of the fluid flowing through the first water inlet 112 and the fluid flowing through the second water inlet 113 is selectively discharged.

On the front end surface of the main body 111, a guide surface 115 guided by a protrusion 125 formed on the rotator 120 during rotation of the rotator 120 described later, and at both ends of the guide surface 115 A first holding protrusion 116 and a second holding protrusion 117 are formed so that the protrusion 125 is caught.

A plurality of fastening protrusions 118 for fastening with the fastening ring 134 of the valve cover 130 to be described later are formed on the outer surface of the main body 111. The fastening protrusions 118 may be formed at three locations on the outer surface of the main body 111 at intervals of 120°.

A fixing part 119 for mounting the valve body 110 to an object inside the water treatment device is formed on an outer surface of the valve body 110 .

A first sealing member 140 is provided between the first inlet 112 and the rotator 120, and a second sealing member 150 is provided between the second inlet 113 and the rotator 120, A third sealing member 160 is provided between the outer circumferential surface of the rotator 120 and the inner circumferential surface of the valve body 110 . The first to third sealing members 140 , 150 , and 160 are configured to maintain watertightness between connecting parts, and O-rings made of an elastic material may be used.

5 and 6, the rotator 120 includes a rotator body 121 rotatably accommodated in the inner space 111a of the valve body 110 and a front center of the rotator body 121. It consists of a shaft 122 extending forward from

The rotator body 121 has a connection passage communicating with the first inlet 112 or the second inlet 113 and the outlet 114 is formed along an outer circumference. The connection passage is formed by penetrating the rear surface 121a of the rotator 120 in the forward and backward directions, but depending on the rotated position, the connection hole 123 corresponding to the first inlet 112 or the second inlet 113 and , It consists of a connection groove 124 connecting between the connection hole 123 and the water outlet 114.

The radius from the center of the rotator 120 to the connection hole 123 is the same as the radius from the center of the main body 111 to the first inlet 112 and the second inlet 113. Therefore, according to the rotational position of the rotator 120, the connection hole 123 is positioned to correspond to the first inlet 112 or the second inlet 113 in the front-back direction, or the first inlet 112 and the second inlet 112. It may be positioned so as not to correspond to any of the two inlets 113.

The connection groove 124 communicates with the connection hole 123 and is formed in a circumferential direction along the outer circumference of the rotator body 121, and the water outlet 114 protrudes from the outer surface of the valve body 110 , The inside of the water outlet 114 and the connection groove 124 are provided to communicate. Therefore, as shown in FIG. 6, the rotation of the rotator 120 When the connection hole 123 is positioned to correspond to either the first inlet 112 or the second inlet 113, the fluid flowing into the connection groove 124 through the connection hole 123 flows through the connection hole 123. After flowing to both sides in the circumferential direction based on the position where 123 is formed, it is discharged through the outlet 114.

The above-described protrusion 125 protrudes outward in the radial direction on the outer surface of the front side of the rotator body 121, and is formed around the outer surface of the rotator body 121 in the circumferential direction toward the front of the connection hole 124. A third sealing member seating groove 126 for coupling the third sealing member 160 is formed.

The shaft 122 includes a cylindrical portion 122b extending forward from the center of the front surface of the rotator body 121 and having a circular cross section corresponding to the shape of the through hole 131a of the valve cover 130, and the cylindrical portion 122b. It extends forward from the portion 122b It consists of a shaft end 122a protruding forward of the valve cover 130 through a through hole 131a formed in the center of the valve cover 130 to be described later.

The shaft end 122a has a rectangular cross section and is coupled with a gripping handle (not shown) for a user's rotational operation, and the cylindrical portion 122b is inserted into the through hole 131a, thereby reducing the rotation of the rotator 120. Smooth rotation is possible.

7 shows a state in which the valve body 110 and the rotator 120 are coupled, and the protrusion 125 formed on the rotator 120 has one side of the guide surface 115 formed on the valve body 110. , and a first catching jaw 116 and a second catching jaw 117 are formed on both sides of the guide surface 115, and the first catching jaw 116 and the second catching jaw 117 are rotators It functions as a stopper to limit the turning radius in both directions of (120).

Therefore, when the rotator 120 is rotated in one direction (counterclockwise direction) and the locking protrusion 125 is in a position to be caught by the first locking jaw 116, the connection hole 123 formed in the rotator 120 It is positioned so as to correspond to the first inlet 112 in the forward and backward directions, and the first inlet 112, the connection hole 123, the connection groove 124, and the outlet 114 communicate with each other. In addition, when the rotator 120 is rotated in the opposite direction (clockwise direction) and the locking protrusion 125 is in a position where it is caught by the second locking jaw 117, the connection hole 123 formed in the rotator 120 is It is positioned so as to correspond to the two inlets 113 in the front-back direction, and the second inlet 113, the connection hole 123, the connection groove 124, and the outlet 114 communicate with each other.

8 and 9, the valve cover 130, the cover body 131 for covering the front surface of the valve body 110 to which the rotator 120 is coupled, the side circumference of the cover body 131 It consists of a first hook portion 132, a second hook portion 133, and a plurality of fastening rings 134 formed along the rotator 120 to rotatably support and prevent axial movement at the same time.

The cover body 131 includes a first cover body 131-1 in which a through hole 131a through which the shaft 122 of the rotator 120 passes is formed in the center, and the first cover body 131-1 It protrudes from the rear and has a concentric structure having a larger diameter than the first cover body 131-1, but when the valve body 110 and the valve cover 130 are coupled, the outside of the body 111 of the valve body 110 It consists of a second cover body 131-2 formed with a diameter surrounding it.

The plurality of fastening rings 134 are formed at positions spaced apart along the circumferential direction, and formed on the valve body 110 in the fastening protrusion insertion hole 134a cut into a square shape in the second cover body 131-2. When the fastening protrusion 118 is inserted, the fastening ring 134 is caught on the fastening protrusion 118, and the second cover body 131-2 at a position spaced apart in both directions from the fastening protrusion insertion hole 134a has front and rear A pair of first cover body incision grooves 134b cut to have a length in the direction are formed so that when the fastening ring 134 is caught on the fastening protrusion 118, it is elastically displaced. Convenience of work is improved when combining or disassembling (110).

The first hook portion 132 and the second hook portion 133 are formed at predetermined angular intervals, and are cut in a U-shape from the first cover body 131-1 to the second cover body 131-2 The three sides of the incisions 132a and 133a are connected, and the remaining sides 132b and 133b consist of unincised fixing ends of the first cover body 131-1, responding to external force acting in the forward and backward directions. Thus, it is elastically displaced in a direction orthogonal to the direction of rotation of the rotator 120, and is configured to be restored to its original position when the action of the external force is released.

The first hook part 132 and the second hook part 133 are located between the first holding jaw 116 and the second locking jaw 117 formed on the valve body 110 based on when viewed from the front. Positioned within the rotation radius range, the first hook part 132 is formed at a position close to the first holding jaw 116, and the second hook part 133 is formed close to the second holding jaw 117 formed in place That is, the first hook portion 132 is provided at a position spaced apart from the first holding jaw 116 by an interval that can accommodate the holding protrusion 125 of the rotator 120, and the second hook The part 133 is provided at a position spaced apart from the second holding protrusion 117 by an interval that the holding protrusion 125 can be accommodated.

When the rotator 120 is coupled to the valve cover 130, the rear ends of the first hook part 132 and the second hook part 133 protrude more rearward than the front end of the protrusion 125, so that the rotator ( When 120 is rotated, the rear ends of the first hook part 132 and the second hook part 133 partly overlap the front end part of the locking protrusion 125 in the front-back direction.

Therefore, as shown in FIG. 9, at the position shown in (a), the locking protrusion 125 moves forward and backward with the first hook part 132 or the second hook part 133 by the rotation of the rotator 120. When passing through the position shown in (b), which is an overlapping area, the first hook part 132 or the second hook part 133 is elastic toward the front (upward direction in the drawing) by the protrusion 125. Displaced, and when the rotator 120 further rotates as in (c), it is restored to its original position and comes into contact with the guide surface 115 of the valve body 110 to generate a contact sound. Therefore, the user can easily recognize that the conversion of the flow path has been completed by the rotation of the rotator 120 in one direction or the opposite direction, and the rotator 120 in a state where the second inlet 113 and the outlet 114 are in communication. When is rotated, as shown in FIG. 9 (a), after the protrusion 125 passes through the non-operational section, the flow path is switched so that the first inlet 112 and the outlet 114 communicate.

At this time, the locking protrusion 125 stops between the first hook portion 132 and the first locking jaw 116, and rotation in one direction is limited by the first locking jaw 116, and the first inlet 112 and The water outlet 114 is brought into communication.

Conversely, by rotating the rotator 120 in the opposite direction (clockwise), the first inlet 112 and the outlet 114 communicate with the second inlet 113 and the outlet 114. In case of switching, the second hook part 133 is elastically displaced by the rotation of the protrusion 125 and then restored to generate a contact sound. At this time, the rotation of the locking protrusion 125 in the opposite direction is restricted by the second locking jaw 117, and stops between the second hook part 133 and the second locking jaw 117, so that the second inlet 113 ) and the outlet 114 are in communication.

10 shows a rotation radius θ at which the locking protrusion 125 of the rotator 120 can rotate in both directions by the first locking jaw 116 and the second locking jaw 117 formed on the valve body 110. there is.

Referring to FIG. 11, the rotation radius θ in both directions of the rotator 120 is determined when the protrusion 125 is located between the first hook portion 132 and the first protrusion 116 or the second hook When located between the part 133 and the second holding jaw 117, the operation section (θ1) in which fluid communication occurs between any one of the first inlet 112 and the second inlet 113 and the outlet 114 ), and when the protrusion 125 is located in the area between the first hook part 132 and the second hook part 133, the first inlet 112 and the second inlet 113 and the water outlet It consists of a non-operating section θ2 in which fluid communication between 114 is blocked.

Here, θ2 is the center when the connection hole 123 is at the closest position that does not overlap with the first inlet 112 and when the connection hole 123 is at the closest position that does not overlap with the second inlet 113 is the angle between the centers of , and B represents the maximum area in which the connection hole 123 can move within the non-operating section θ2.

When the connection hole 123 of the rotator 120 is positioned within the non-operating section θ2, the first inlet 112 and the second inlet 113 are horizontally rotated by the rear surface 121a of the rotator 120. It becomes a state in which fluid communication with the connecting groove 124 is blocked.

In this way, by providing the non-operation section θ2 in which the flow of fluid is blocked within the range of the rotation radius θ of the rotator 120, the first inlet 112 and the second inlet 113 are blocked from communicating with each other, It can prevent leakage due to reverse flow of fluid.

Hereinafter, with reference to FIGS. 10 to 12, the configuration and operation of the water treatment device having the flow path switching valve 100 configured as described above will be described.

The water treatment device of the present invention includes a first flow path P1 connecting a cold water outlet pipe 56 to which cold water is supplied and a first outlet pipe 61, a purified water outlet pipe 52 to which purified water is supplied, and the first water outlet pipe 52 to which purified water is supplied. It is provided at the intersection of the second flow path P2 connecting the water outlet pipe 61 and the cold water outlet pipe 56 and the purified water outlet pipe 52, so that either the cold water or the purified water is discharged through the first water outlet pipe. (61), including a flow path switching valve 100 for switching a flow path, and a first storage tank 20 storing cold water supplied to the cold water outlet pipe 56, the flow path switching valve 100 ) is the operating section θ1 in which cold water or purified water is discharged through the first flow path P1 or the second flow path P2, and the cold water through the first flow path P1 and the second flow path P2. and an inactive section θ2 in which all water output is blocked.

The first storage tank 20 includes a filter unit 10 for filtering incoming raw water, and a purified water supply pipe 51 for supplying purified water passing through the filter unit 10 to the first storage tank 20 this is connected

A cooling coil 21 for cooling stored water is provided on the outer circumference of the first storage tank 20, and a ball top 22 is provided to limit the level of water flowing into the first storage tank 20. do. The ball top 22 limits the water level of the first storage tank 20 by mechanically blocking the inflow of water when the water flowing into the first storage tank 20 reaches a certain level using buoyancy.

The flow path switching valve 100 functions to switch the flow path to discharge cold water from the first storage tank 20 or to directly discharge purified water that has passed through the filter unit 10 . In the flow path switching valve 100, a cold water outlet pipe 56 for dispensing cold water from the first storage tank 20, a purified water outlet pipe 52 branched from the purified water supply pipe 51, and the cold water or purified water A first water outlet pipe 61 for dispensing water to the user is connected.

The second storage tank 30 is connected to the first storage tank 20 by a first connection pipe 53, and the water in the first storage tank 20 passes through the first connection pipe 53 to the second storage tank 20. It flows into the storage tank 30.

The first storage tank 20 and the second storage tank 30 are positioned adjacent to each other, but the bottom surfaces of the first storage tank 20 and the second storage tank 30 are provided at the same height, or the second storage tank The bottom of the tank 30 may be provided at a lower position than the bottom of the first storage tank 20 . Due to this, the purified water of the second storage tank 30 can be smoothly introduced into the third storage tank 40 .

Air vents (not shown) are formed on the upper portions of the first storage tank 20 and the second storage tank 30 to communicate the internal spaces with the atmosphere.

Since atmospheric pressure acts equally on the upper space of the first storage tank 20 and the second storage tank 30 due to the air vent, The purified water in the first storage tank 20 flows into the second storage tank 30 through the first connection pipe 53, and the water levels in the first storage tank 20 and the second storage tank 30 are maintained at the same level. And, since the water level of the second storage tank 30 can be limited by the ball top 22 provided in the first storage tank 20, a separate configuration for limiting the water level of the second storage tank 30 is unnecessary. do.

The second storage tank 30 is connected to the third storage tank 40 by the second connection pipe 54, and the purified water of the second storage tank 30 is transferred to the third storage tank through the second connection pipe 54. It flows into the storage tank 40.

The third storage tank 40 is provided at a position lower than the first storage tank 20 and the second storage tank 30, and a heater 41 for heating stored purified water is provided inside.

The second connection pipe 54 is connected to the lower portion of the second storage tank 30, and the second water outlet pipe 62 for dispensing hot water is connected to the upper portion of the third storage tank 40. Therefore, the purified water of the second storage tank 30 flows in through the lower part of the third storage tank 40, and the hot water heated by the heater 41 in the third storage tank 40 passes through the upper part of the second water outlet pipe. (62).

Water extraction through the first water outlet pipe 61 and the second water outlet pipe 62 may be configured mechanically or electronically. In the case of a mechanical type, when the user pushes the water outlet cocks (not shown) of the first water outlet pipe 61 and the second water outlet pipe 62, purified water, cold water, and hot water are dispensed without a separate valve operation. By detecting the operation signal of the water extraction cock, the solenoid valve provided on the pipe is operated and water is discharged.

A drain pipe 57 for draining water from the first storage tank 20, the second storage tank 30, and the third storage tank 40 is connected to a lower portion of the third storage tank 40.

The upper part of the third storage tank 40 and the upper part of the second storage tank 30 are connected by an air vent pipe 55, so that the pressure of the third storage tank 40 passes through the air vent pipe 55. It is discharged to the second storage tank (30).

The operation of the flow path switching valve 100 in the water treatment device of the present invention configured as described above will be described.

The flow path switching valve 100, when the connection hole 123 is located in the operating section θ1 where fluid communication occurs between either one of the first inlet 112 and the second inlet 113 and the outlet 114 Cold water or purified water is discharged through the first flow passage (P1) or the second flow passage (P2), and the fluid communication between the first inlet 112 and the second inlet 113 and the outlet 114 is blocked. When the connection hole 123 is located in the non-operating section θ2, both purified water and cold water are blocked through the first and second passages P1 and P2.

If it is assumed that there is no non-operating section θ2 in the flow path switching valve 100, the user opens the connection hole 123 of the rotator 120 to the first inlet 112 and the second inlet ( 113), if it is positioned so as to communicate with both the first inlet 112 and the second inlet 113 without being placed in communication with any one of them, the first inlet 112 and the second inlet 113 communicate with each other.

In this way, when the flow path switching valve that does not include the non-operating section θ2 is applied to the water treatment device, purified water filtered in the filter unit 10 flows through the purified water outlet pipe 52 and the second inlet of the flow path switching valve 100. 113, the connection hole 123, the first water inlet 112, and the cold water outlet pipe 56 flow backward into the first storage tank 20.

The first storage tank 20 is provided with a ball top 22 for adjusting the water level, but the ball top 22 is connected to the top of the first storage tank 20 when the first storage tank 20 reaches a certain level. Although purified water flowing through the purified water supply pipe 51 can be mechanically blocked, when purified water flows from the lower part through the cold water outlet pipe 56 of the first storage tank 20, the inflow of purified water cannot be blocked. A problem that the water in the first storage tank 20 overflows may occur due to purified water flowing backward into the first storage tank 20 .

On the other hand, when the non-operating section θ2 is provided in the flow path switching valve 100 as in the present invention, the user operates the handle connected to the rotator 120 so that the connection hole 123 is the first inlet 112 Alternatively, even if it is not located at a position corresponding to the second inlet 113 but located in the non-operating section θ2, purified water does not flow back to the first storage tank 20, resulting in water overflow of the first storage tank 20. leakage can be prevented.

This action is effective in a mechanical water extraction type water treatment device. That is, in the water treatment device of the electronic water extraction method, when solenoid valves for dispensing cold water and purified water are provided in the cold water outlet pipe 56 and the purified water outlet pipe 52, respectively, the connection hole 123 ) is located so that the first inlet 112 and the second inlet 113 are in communication, it is possible to prevent the reverse flow of purified water into the first storage tank 20 by controlling the operation of the cold water-side solenoid valve and the purified water-side solenoid valve. can

As described above, the present invention simplifies the configuration of the device for changing the flow path by applying the flow path switching valve 100 having the non-operating section θ2 to the water treatment device of the mechanical water extraction method, and at the same time, it is possible to easily and accurately perform the flow change. The water treatment device can be stably operated by preventing water overflow due to reverse flow of water.

As described above, the present invention is not limited to the above-described embodiments, and modifications obvious to those skilled in the art to which the present invention pertains may be carried out without departing from the technical spirit of the present invention claimed in the claims. It is possible, and such modifications fall within the scope of the present invention.

10: filter unit 20: first storage tank
21: cooling coil 22: ball top
30: second storage tank 40: third storage tank
41: heater 51: purified water supply pipe
52: purified water pipe 53: first connection pipe
54: second connection pipe 55: air vent pipe
56: cold water outlet pipe 57: drain pipe
61: first water outlet pipe 62: second water outlet pipe
100: Euro conversion valve 110: valve body
111: main body 112: first inlet
113: second inlet 114: outlet
115: guide surface 116: first locking jaw
117: second holding jaw 118: fastening protrusion
120: rotator 121: rotator body
122: shaft 123: connection hole
124: connection groove 125: stumbling block
130: valve cover 131: cover body
132: first hook part 133: second hook part
134: fastening ring 140: first sealing member
150: second sealing member 160: third sealing member
P1: 1st flow path P2: 2nd flow path

Claims (15)

A valve body having a plurality of inlet ports connected to different passages and an outlet port through which the fluid introduced through the inlet port is discharged;
a rotator rotatably provided inside the valve body to form a connection passage such that one of the plurality of water inlets selectively communicates with the water outlet according to a rotated position; and
A valve cover fastened to the valve body to rotatably support the rotator;
The connection passage is formed between the connection hole corresponding to the plurality of inlet ports and the inner surface of the valve body by being concavely formed along the circumference of the outer surface in the axial direction of the rotator, thereby forming the connection hole and the water outlet made of a connecting groove connecting the;
The plurality of inlets are formed spaced apart in the circumferential direction on the rear surface of the valve body, the water outlet is formed on one side of the valve body and communicates with the connection groove, and the connection hole is formed on the rear surface of the rotator in the front and rear directions A flow path switching valve characterized in that it penetrates and communicates with the connection groove. delete delete According to claim 1,
A locking protrusion is formed on one side of the rotator,
A flow path switching valve, characterized in that a first locking jaw and a second locking jaw are formed on the valve body so that the locking protrusion is engaged to limit the rotation radius of the rotator in both directions. According to claim 4,
When the rotator is rotated in one direction and the locking protrusion is caught on the first locking jaw, the inlet located on one side of the plurality of inlets communicates with the connection passage and the outlet,
When the rotator is rotated in the opposite direction and the locking protrusion is caught on the second locking jaw, the inlet located on the other side of the plurality of inlets is communicated with the connection passage and the outlet. According to claim 1,
A locking protrusion is formed on one side of the rotator,
In the valve cover, the rotation of the rotator catches on the protrusion and is elastically displaced, and then restored while generating a contact sound, thereby recognizing that the conversion of the flow path has been completed by rotation of the rotator in one direction or in the opposite direction. A first hook A flow path switching valve characterized in that the portion and the second hook portion are formed. According to claim 6,
A guide surface for guiding the protrusion when the rotator rotates is formed on the front surface of the valve body, and the first hook part and the second hook part contact the guide surface to generate contact sound. changeover valve According to claim 6,
A first locking jaw and a second locking jaw for engaging the locking protrusion are formed on the valve body to limit the rotation radius in both directions of the rotator,
Within the bidirectional rotation radius of the rotator,
When the catching protrusion is located between the first hook part and the first catching protrusion or between the second hook part and the second catching protrusion, fluid communication is effected between any one of the plurality of inlets and the water outlet. section and
When the locking protrusion is located in a region between the first hook part and the second hook part, a non-operating section is provided in which fluid communication is blocked between the plurality of inlet ports and the water outlet port. According to claim 1,
A plurality of fastening protrusions are formed on one of the valve body and the valve cover,
A flow path switching valve, characterized in that the other one of the valve body and the valve cover is formed with a plurality of fastening rings that are engaged with the fastening protrusion and fastened. According to claim 1,
Between the plurality of inlets and the rotator, and between the valve body and the rotator, a sealing member for maintaining watertightness is provided, respectively. A first flow passage connecting a cold water outlet pipe through which cold water is supplied and a first water outlet pipe;
a second flow path connecting a purified water outlet pipe through which purified water is supplied and the first outlet pipe;
a flow path switching valve provided at an intersection of the cold water outlet pipe and the purified water outlet pipe to switch a flow path in order to supply one of the cold water and purified water to the first water outlet pipe;
Including; a first storage tank in which the cold water supplied to the cold water outlet pipe is stored,
The flow path switching valve,
a valve body having a first inlet connected to the cold water outlet pipe, a second inlet connected to the purified water outlet pipe, and a water outlet connected to the first water outlet pipe;
a rotator rotatably provided inside the valve body to form a connection passage such that one of the first inlet and the second inlet and the outlet are selectively communicated according to a rotational position; and
A valve cover coupled to the valve body to rotatably support the rotator;
The connection passage is formed concave along the circumference of the outer surface of the rotator in the axial direction of the connection hole selectively communicating with any one of the first inlet and the second inlet according to the rotation of the rotator, and the valve body It is formed between the inner surface and the connection groove connecting the connection hole and the water outlet;
The first inlet and the second inlet are formed spaced apart in the circumferential direction on the rear surface of the valve body, and the water outlet is formed on one side of the valve body to communicate with the connection groove, and the connection hole is the rear surface of the rotator A water treatment device characterized in that it penetrates in the front and rear directions and communicates with the connection groove. According to claim 11,
The water treatment device, characterized in that the first storage tank is provided with a ball top that mechanically blocks the inflow of water when the water level reaches a certain level. According to claim 11,
The flow path switching valve,
A water treatment device comprising an operating section in which cold water or purified water is discharged through the first or second passage and a non-operated section in which both cold water and purified water are discharged through the first and second passages. delete According to claim 11,
The rotator is a water treatment device, characterized in that rotated by a user's manual operation

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