JP2006281164A - Water purifying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water purifying device which is installed in a water supply pipe of a tap water faucet and surely performs switching between raw water and purified water with a simple structure. <P>SOLUTION: The water purifying device comprises a water purifier 20, a primary flow channel 11 introducing the raw water into a water purifier, a first water discharge means 12 for discharging the purified water purified by the water purifier, a flow channel switching device 10 installed in the middle of the primary flow channel, a second water discharge means 13 branched from the above device for discharging the raw water without through the water purifier, and a switching valve 50 installed in the middle of the second water spouting means. When the switching valve is opened, the flow channel is switched from the primary flow channel through a fluid inlet part, thereby preventing the raw water flowing into a device body from flowing into a second chamber from a first chamber in the device body due to a negative pressure by a swirl, and discharging the water from a first fluid outlet part. When the opening and closing valve is closed, water is discharged from a second fluid outlet part through an inner flow channel. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a water purification apparatus comprising an undersink type water purifier connected to a side pipe of tap water, and purified water from which sanitized chlorine, harmful components, odorous components, impurities, etc. are removed with tap water and activated carbon as raw water It is related with the water purifier which makes it possible to flow out from a spout by selecting suitably.

  A water purifier attached to a tap water tap or a water supply pipe and capable of switching between raw water and purified water is already known (see, for example, Patent Document 1 and Patent Document 2). Such a water purifier described in Patent Document 1 includes a primary side flow channel for introducing raw water into the water purifier, a secondary side flow channel from the water purifier to the water outlet, and a secondary side flow branched from the primary side flow channel. A bypass flow path that merges with the path, a flow path switching blocking section that is interposed in the branching section, and a backflow blocking section that is interposed in the secondary flow path. Then, the flow switching unit cuts off the raw water supply in the still water, communicates the upstream side and the downstream side of the primary side channel when discharging the purified water, and the bypass side and the upstream side of the primary side channel when discharging the raw water. The raw water and purified water are selectively discharged from the faucet.

  Moreover, the water purifier described in Patent Document 2 is provided with a side pipe having a water purifier interposed in a water pipe, and a pressure / flow rate sensor linked to a valve for branching the raw water into the side pipe is attached to this side pipe. It is designed to switch between purified water and raw water and display a warning.

On the other hand, a two-way valve is generally used as a switching valve used for the flow path switching block of such a water purifier (see, for example, Patent Document 3). The two-way valve described in Patent Document 3 includes an internal flow path having a wide inlet side opening and a narrow outlet side opening in the valve body. Then, the valve body is slid and rotated, and in the first outflow state, the fluid inlet portion communicates with one fluid outlet portion via the internal flow path. Further, in the second outflow state, the fluid inlet portion is communicated with the other fluid outlet portion via the internal flow path.
JP 2002-155555 A (page 3-4, FIG. 1) JP 2001-225062 A (page 3-4, FIG. 1) Japanese Utility Model Publication No. 6-43435 (page 9-11, FIG. 1)

  The two-way valve described in Patent Document 3 described above switches the water supply fluid flow path to one fluid outlet side flow path and the other fluid outlet side flow path by sliding the valve body according to the operation of the actuator. It has a configuration. That is, since the valve body itself slides to switch the fluid flow path, it is easy to receive a force due to fluid pulsation, etc., and this sliding part wears out, so-called clogging occurs and slides smoothly. There is a risk that the switching of the flow path cannot be performed reliably. In addition, when the actuator stops at a position other than a predetermined position during a power failure or the like, switching between one fluid outlet side flow path and the other fluid outlet side flow path remains impossible, which may result in damage to the two-way valve.

  Further, the conventional switching valve for switching the flow path is generally a ball valve or a cylinder valve. However, such a two-way switching valve has a complicated structure, and angle control by a stepping motor or the like is essential. Therefore, a complicated operation is required to switch the flow path, and the flow path switching device itself is increased in size. In addition, an external actuator is required to drive the switching valve, and the external actuator mounting structure and seal structure are complicated. Therefore, the water purifiers described in Patent Document 1 and Patent Document 2 including such a two-way valve have a complicated structure and are expensive, and there is a problem of breakage of the flow path switching portion due to long-term use. Have.

  Moreover, in addition to such a problem in the configuration of the two-way valve itself, for example, the water purifier described in Patent Document 1 needs to include a backflow prevention unit (backflow prevention valve) in the secondary flow path. The structure is further complicated.

  An object of the present invention is to provide a water purifier that is provided, for example, in a water supply pipe of a tap water tap and reliably switches between raw water and purified water with a simple configuration.

In order to solve the problems described above, the water purifier according to the present invention is
A water purifier that contains water purification material and purifies raw water into purified water;
A primary flow path for introducing raw water into the water purifier,
A first water discharging means for discharging purified water purified by the water purifier;
A flow path switching device provided in the middle of the primary flow path;
A second water discharge means that branches from the flow path switching device and discharges raw water without going through a water purifier;
An open / close valve provided in the middle of the second water discharge means,
The flow path switching device includes a device body having a first fluid outlet portion and a second fluid outlet portion, one of which is connected to the inlet side of the water purifier and the other of which is connected to the second water discharge means. Prepared,
The apparatus main body includes a first chamber having a swirl region for swirling raw water flowing into the apparatus main body from a fluid inlet, a second chamber communicated with the first chamber via an internal flow path,
A swirl that has a valve body that blocks the flow of raw water from the first chamber to the second chamber in response to a negative pressure due to the swirling flow of the raw water in the first chamber, and that forms a swirling flow in the first chamber A flow forming means is provided, and the first fluid outlet is provided at a position that does not hinder the rotation of the raw water in the first chamber,
The second fluid outlet is provided in the second chamber;
In the open / close valve open state, the valve body prevents the raw water flowing into the apparatus main body from the primary side flow path through the fluid inlet portion from flowing into the second chamber from the first chamber due to negative pressure due to the swirling flow. However, water is discharged from the first fluid outlet, and water is discharged from the second fluid outlet through the internal flow path when the open / close valve is closed.

  When the water purifier is equipped with such a special flow path switching device, when the open / close valve is opened, the negative pressure generated near the center of the swirl flow is used as known from the solution of the Navier-Stokes equation. Then, the valve body is pulled so as to close the internal flow path, thereby preventing the raw water from flowing from the first chamber to the second chamber, and purifying the water from the primary flow path through the fluid inlet portion and the first fluid outlet portion. The raw water can selectively flow out to either the inlet side of the vessel or the second water discharge means.

  Further, when the on-off valve is closed, the valve body is moved so as to open the internal flow path by the decrease in negative pressure acting on the valve body and the discharge pressure of the raw water flowing into the first chamber from the fluid inlet, As a result, the raw water can selectively flow out from the primary channel to the other side of the inlet side of the water purifier or the second water discharge means via the fluid inlet, the internal channel, and the second fluid outlet.

  Further, by adopting such a structure, the raw water is allowed to flow out of the primary water flow from the primary side flow path through the second water discharge means through the second water discharge means, or the water purifier and the first It can be made to flow out from the water outlet as purified water through the water discharging means, and the structure of the flow path switching device and thus the structure of the entire water purification device becomes simple.

  Moreover, since the flow path switching device itself has a check valve function, it is not necessary to provide a special check valve in the water purifier as in the prior art.

Moreover, the water purifier of Claim 2 of this invention is a flow-path switching apparatus of Claim 1,
The first water discharging means and the second water discharging means are joined together through a merging portion and discharged from one water outlet, and the opening / closing valve is provided upstream of the second water discharging means of the merging portion. It is characterized by being.

  With such a structure, raw water or purified water can be discharged from one water outlet both when the open / close valve is opened and when it is closed. As a result, the existing faucet can be used as the water outlet of the water purifier, and the space around the water outlet can be saved.

Moreover, the water purifier described in claim 3 of the present invention is the water purifier according to claim 1 or 2,
The control device controls the opening and closing of the on-off valve; and
An operation switch for instructing the control device to switch the raw water and purified water;
It is provided with the flow detection means provided in the upstream of the said flow-path switching apparatus, and detects the flow of water.

  Just by controlling the control device via the operation switch, the raw water is directly discharged from the faucet as the raw water through the second water discharge means only by opening / closing one open / close valve, that is, one on / off control. Or it can be made to flow out from a faucet as purified water via a water purifier and the 1st water discharging means. Further, it is possible to grasp the water discharge timing when the raw water and the purified water are selectively discharged from the water discharge port through a signal from the flow detection means.

Moreover, the water purifier according to claim 4 of the present invention is the water purifier according to claim 3,
It further has a notifying means for notifying the opening / closing state of the opening / closing valve and the use timing of the purified water flowing out from the water outlet according to claim 2.

  By providing such a notification means, the user can recognize the time lag (time lag) between the switching timing of the opening and closing valve and the outflow timing of the raw water or purified water from one spout, and the user can use the raw water and the purified water. Can be appropriately selected and discharged from one water outlet.

  ADVANTAGE OF THE INVENTION According to this invention, the water purifier which is provided in the water supply pipe of the tap of a tap water, for example and can perform switching of raw | natural water and purified water reliably with a simple structure can be provided.

  Hereinafter, the water purifier concerning one embodiment of the present invention is explained. As shown in FIG. 1, a water purifier 1 according to an embodiment of the present invention includes a water purifier 20 that contains a water purifying material, a primary channel 11 that introduces raw water into the water purifier 20, and a water purifier 20. The secondary side flow path 12 from the outlet to the faucet 90, the flow path switching device 10 interposed in the middle of the primary side flow path 11, and the secondary side flow path 11 branching from the primary side flow path 11 via the flow path switching device 10 And a bypass flow path 13 that merges with the secondary flow path 12. An opening / closing valve 50 is provided in the middle of the bypass flow path 13, and a pressure regulating valve 30 is provided on the upstream side of the flow path switching device 10 of the primary side flow path 11. Furthermore, the water purifier 1 is provided with a control device 60 that controls opening and closing of the opening / closing valve 50, an operation switch 70 that instructs the control device 60 to switch between raw water and purified water, and the raw water provided upstream of the flow path switching device 10. A flow rate sensor 65 that detects the flow and a notification unit 62 that notifies the switching timing of raw water and purified water are provided.

  In addition, a stop cock 40 which is a main plug is provided on the upstream side of the primary side flow path 11, and raw water can be appropriately supplied to the primary side flow path 11 as the stop cock 40 is opened and closed. Further, the pressure regulating valve 30 adjusts the pressure of the raw water (tap water) flowing through the primary flow path 11 within a range of, for example, 0.1 MPa to 0.7 MPa to an approximately constant pressure of, for example, about 0.3 MPa, and maintains this constant pressure. The pressure acts on the water purifier 20 and plays the role of preventing the water purifier 20 from being damaged.

  In addition, the upstream side of the secondary side flow path 12 extending from the bypass flow path 13 and the outlet side of the water purifier 20 is joined by the merging portion 14 and connected to the downstream side of the secondary side flow path 12. The secondary flow path 12 and the merging section 14 constitute a first water discharge means, and the bypass flow path 13, the merging section 14 and the downstream side of the secondary flow path 12 constitute a second water discharge means. Yes. That is, the downstream side of the merging portion 14 of the secondary side flow path 12 serves as the first water discharge means and the second water discharge means.

  The control device 60 is capable of wirelessly communicating with, for example, an operation switch 70 mounted on a kitchen counter or the like, and is electrically connected to a notification unit 62 including an LED lamp and a buzzer mounted on the lower portion of the kitchen counter. Has been. The flow rate sensor 65 is a sensor that detects the flow of raw water in the primary side flow path 11 and the flow rate. The control device 60 is electrically connected to the flow rate sensor 65, and the flow rate sensor 65 connects to the primary side flow path 11. The presence or absence of the flow of raw water and the flow rate are received as detection signals. The control device 60 is electrically connected to the opening / closing valve 50 and controls opening / closing of the opening / closing valve 50.

  The notification unit 62 is electrically connected to the control device 60, and the control device 60 indicates the open / close state of the open / close valve 50 based on the open / close signal of the open / close valve 50 and the flow rate detection signal of the flow rate sensor 65. In addition to notifying the user with the LED lamp, the buzzer of the notification unit 62 notifies the user of the switching timing of the raw water and purified water outflow from the faucet 90.

  The on-off valve 50 is provided in the middle of the bypass flow path 13 and is an on / off valve having a simple structure including a latching solenoid and a valve body, for example.

  The flow path switching device 10 plays a role of selectively branching and flowing the raw water flowing from the primary side flow path 11 to the bypass flow path 13 or the inlet side of the water purifier 20 according to the open / close state of the open / close valve 50. The detailed configuration of the flow path switching device 10 will be described later.

  The water purifier 20 contains, for example, activated carbon, delicate synthetic fibers, etc., and passes raw water through the activated carbon to remove disinfecting chlorine, harmful components, odor components, impurities, etc. It plays the role of flowing out into the secondary channel 12.

  On the other hand, a faucet 90 equipped with a spout 91 is attached to the upper part of the kitchen counter, and raw water or purified water flows out from the spout 91 in accordance with the operation of the lever 92 on the faucet.

  As shown in FIGS. 2 to 4, the flow path switching device 10 includes a housing (device main body) 10 a having a first chamber 110 and a second chamber 120 that are made of, for example, resin and defined by a separation wall 130. The fluid inlet 111 and the first fluid outlet 112 provided on the first chamber side of the housing 10a, the second fluid outlet 122 provided on the second chamber side of the housing 10a, and the approximate center of the separation wall 130 The internal flow path 131 (see FIG. 3) that is formed in an opening in the section and communicates with the first chamber 110 and the second chamber 120 and the compression spring 145 is urged from the second chamber side to the first chamber side, A valve body 140 that restricts the flow rate of the raw water passing through the flow path 131 is provided. The fluid inlet 111 is connected to the primary channel 11, the first fluid outlet 112 is connected to the bypass channel 13, and the second fluid outlet 122 is connected to the upstream side of the water purifier 20.

  The first chamber 110 is formed as a swivel region that forms a flat columnar space below the inside of the housing, and the fluid inlet 111 is located near the bottom of the first chamber 110 at the peripheral wall on the radial side of the first chamber 110. It is provided so that the approach direction is directed to the tangential direction of the peripheral wall. Further, the first fluid outlet portion 112 is provided on the peripheral wall portion on one side in the radial direction with respect to the central portion of the first chamber 110 in the same manner as the fluid inlet portion 111. The first fluid outlet 112 is provided on the peripheral wall of the upper portion of the first chamber that is closer to the separation wall 130 than the fluid inlet 111. And the raw | natural water outflow direction of the 1st fluid exit part 112 is the tangent direction of the surrounding wall of the 1st chamber 110 similarly to the fluid inlet part 111. FIG.

  With such a configuration, when the on-off valve 50 is opened, the raw water flowing from the tangential direction of the swirl region of the first chamber 110 through the fluid inlet 111 from the primary side flow path 11 Ascending while turning, and flows out from the first fluid outlet 112 in the tangential direction of the turning region. As a result, a swirling flow (vortex) of the raw water is generated around the central axis of the first chamber 110 in the first chamber, and the upper region of the central portion of the swirling flow in the first chamber 110 is greater than the surrounding region and the second chamber 120. However, the pressure drops to negative pressure.

  As shown in FIGS. 3 and 4, a bypass channel 13 extends from the first fluid outlet 112, and an opening / closing valve 50 that opens and closes the channel is provided in a part of the bypass channel 13. ing. As described above, the open / close valve 50 includes an actuator such as a latching solenoid and a valve driven by the actuator.

  The second chamber 120 is formed as a flat columnar space, like the first chamber 110. In the present embodiment, the second fluid outlet portion 122 is provided on the peripheral wall of the second chamber 120 above the first fluid outlet portion 112 in the same direction as the first fluid outlet portion 112. The second fluid outlet 122 is connected to the inlet side of the water purifier 20, but does not have a special opening / closing valve.

  In addition, the first chamber 110 and the second chamber 120 are defined by the separation wall 130 as described above, and the first chamber 110 and the second chamber 120 are located at the central portion of the separation wall 130, that is, at the position corresponding to the central axis of the swivel region of the first chamber 110 described above. An internal flow path 131 having an opening shape that communicates the first chamber 110 and the second chamber 120 is provided, and a valve body 140 that restricts the flow of raw water through the internal flow path 131 is provided.

  Here, in the case of this embodiment, the internal flow path 131 indicates a communication portion opened in the separation wall 130 that partitions the first chamber 110 and the second chamber 120, but the first chamber and the second chamber are separated to some extent. Naturally, a communication path formed between the two and communicating between them is also included as an internal flow path.

  A seat portion 132 on which the valve body 140 is seated is formed in the opening on the second chamber side of the internal flow path 131, and a valve that supports the valve body 140 so as to be movable in the vertical direction above the valve body 140. A body support part 134 (see FIG. 2) is provided. A compression spring 145 is interposed between the valve body support portion 134 and the valve body 140, and the valve body 140 is pressed against the seating portion 132 toward the first chamber side of the internal flow path 131 by the compression spring 145. It is like that.

  The urging force of the compression spring 145 is combined with the pulling force to the valve body 140 due to the negative pressure of the swirling flow of the raw water generated in the first chamber 110 when the open / close valve is opened, and from the first chamber 110 to the second chamber. In addition to the urging force sufficient to prevent the raw water from flowing into 120, the valve element 140 moves so that the raw water in the first chamber 110 flows into the second chamber 120 when the on-off valve is closed. It is an energizing force that does not prevent you from doing it.

  Then, the effect | action (usage method) of the water purifier 1 of the structure mentioned above is demonstrated. The user selects whether the raw water is discharged from the water outlet or the purified water is discharged through the operation switch 70. Here, the case where raw | natural water is made to flow out from the water outlet 91 first is demonstrated. In this case, by switching the operation switch 70 to the raw water side, this switching command signal is transmitted to the control device 60 wirelessly, and the control device 60 opens the open / close valve 50. As a result, the raw water that has flowed into the fluid inlet 111 of the channel switching device 10 from the primary channel 11 flows out to the bypass channel 13 via the first fluid outlet 112 based on the action described below. Then, the raw water that has flowed out to the bypass flow path 13 is supplied to the faucet 90 via the opening / closing valve 50, the merging portion 14, and the secondary side flow path 12, and flows out from the spout 91 as raw water.

  Here, raw water is allowed to flow from the primary flow path 11 to the bypass flow path 13 and the secondary flow path 12 via the fluid inlet 111 and the first fluid outlet 112 of the flow switching device 1, and the raw water is discharged from the outlet 91. The operation (operation) of the flow path switching device 10 when the flow is caused to flow out will be described in detail. In this case, the raw water flowing into the fluid inlet 111 of the flow path switching device 10 from the primary side flow path 11 through the pressure regulating valve 30 with the stop cock 40 opened is shown in FIG. As shown in FIG. 3, the fluid flows in the tangential direction with respect to the peripheral wall of the first chamber 110 from the fluid inlet portion 111, swirls in the swirling region of the first chamber 110 and rises, and the first fluid outlet portion 112 of the first chamber 110. Then flows out to the bypass channel 13 through the opening / closing valve 50. At this time, due to the swirling of the raw water, a swirling flow of the raw water is generated in the first chamber around the central axis of the swirling region of the first chamber 110, and the pressure above the central portion of the swirling flow is known by the solution of the Navier-Stokes equation. As compared to the peripheral portion and the second chamber 120 (see the solid lines in FIGS. 5A and 5C).

  The valve body 140 is originally urged toward the first chamber by the compression spring 145 so as to narrow the internal flow path 131, but this negative pressure further acts on the second chamber side opening of the internal flow path 131. It is further pressed against the formed seat portion 132. As a result, the internal flow path 131 is completely closed, and the raw water does not flow into the second chamber 120 from the first chamber 110 when the opening / closing valve 50 is open.

  On the other hand, when the user causes the purified water to flow out from the water outlet 91, the operation switch 70 is switched to the purified water side. By switching the operation switch 70, a switching signal is transmitted to the control device 60 wirelessly, and the on-off valve 50 is closed. Accordingly, based on the operation described below of the flow path switching device 10, the raw water does not flow out from the first fluid outlet portion 112, and the raw water flows out from the second fluid outlet portion 122 toward the water purifier 20. Become. Here, when raw water is allowed to flow from the primary side channel 11 to the water purifier 20 via the fluid inlet portion 111 and the second fluid outlet portion 122, and purified water is allowed to flow out of the water outlet 91 via the secondary side channel 12. The operation (operation) of the flow path switching device 10 will be described in detail. When the open / close valve 50 is closed, the raw water flowing into the first chamber 110 from the primary side flow path 11 through the fluid inlet portion 111 of the flow path switching device 10 via the pressure regulating valve 30 is still swirled in the first chamber. Since raw water can no longer flow out from the first fluid outlet 112, the swirl flow in the first chamber is insufficient compared to when the on-off valve is open (see the dotted line in FIG. 5B and FIG. 5). (See the dotted line in c)). As a result, the pressure above the center of the swirling flow does not decrease as much as the opening / closing valve is opened, and only a slight negative pressure is generated as compared with the second chamber 120 and the peripheral portion. This facilitates the movement of the valve body 140 to the second chamber side, and the raw water that has flowed into the first chamber pushes up the valve body 140 by its discharge pressure and moves the valve body 140 to the second chamber side, thereby causing an internal flow. Open the second chamber side opening of the passage 131. The raw water in the first chamber flows into the second chamber 120 and flows out from the second fluid outlet portion 122 and is guided to the inlet side of the water purifier 20.

  Simultaneously with the closing operation of the opening / closing valve 50, the control device 60 receives the presence / absence and flow rate of the raw water in the primary flow path 11 from the flow rate sensor 65 as detection signals. Thus, the control device 60 sequentially measures how much raw water is supplied to the water purifier 20 via the flow sensor 65. Then, the controller 60 controls the flow rate until the raw water switched by the flow path switching device 10 flows out from the water outlet 91 of the faucet 90 via the water purifier 20, the merging portion 14, and the secondary side flow path 12. Calculation is based on 65 output signals. Based on the calculation result, the notification unit 62 notifies the user of the completion of the switching operation to the purified water through the control device 60 simultaneously with the closing of the opening / closing valve 50, and the purified water is discharged from the outlet 91 of the faucet 90. The user is informed that the purified water can be used by the buzzer of the notification unit 62 at the timing of the outflow. Thus, the user can appropriately use the purified water by offsetting the time lag related to the outflow of purified water from the water outlet 91 associated with the switching of the raw water and the purified water by the operation switch 70.

  The flow path switching device 10 has a configuration in which the valve element 140 is moved by the negative pressure in the center of the swirling flow generated in the first chamber 110 inside the device, and is externally provided like a conventional two-way valve. And a valve body having a sliding portion interlocked with the actuator. For this reason, as the conventional two-way valve is used for a long period of time, the sliding force of the raw water continues to act on the sliding parts such as the valve stem and valve body, so that a so-called clogging occurs in the sliding parts and the valve is opened and closed. There is no such thing as becoming impossible. Further, if the open / close valve 50 is naturally opened at the time of a power failure, the raw water flowing in from the fluid inlet portion 111 always flows out from the first fluid outlet portion 112. Therefore, fail safety can be realized if such safety is ensured when raw water flows out of the first chamber fluid outlet 112 during such a power failure.

  Further, since the valve body 140 is seated on the seat portion 132 formed in the opening on the second chamber side of the internal channel 131 and closes the internal channel 131, the raw water on the second chamber side is the first. Even if it is going to flow backward to the chamber side, the valve body 140 is pushed and seated on the seat portion 132 along with this flow, whereby the valve body 140 closes the internal flow path 131 and moves from the second chamber 120 to the first chamber 110. Can prevent back flow of raw water.

  The position where the fluid inlet part and the first fluid outlet part of the flow path switching device are provided is not limited to the position of the above-described embodiment, and the raw water flowing from the fluid inlet part when the open / close valve is open is the first. A swirling flow is generated in the first chamber while flowing out from the fluid outlet, and the valve body can be formed in any position as long as the valve body can firmly close the internal flow path due to the pressure drop above the swirling flow. May be.

  In addition, if the first chamber can generate a swirling flow of raw water, the first chamber does not necessarily have a peripheral circular shape in a cross-sectional view orthogonal to the axial direction of the swirl region, and has a peripheral elliptical shape or a peripheral track shape in the cross-sectional view. You may do it.

  In addition, the valve body does not necessarily include a spring as in the above-described embodiment, but by having the spring, the flow of raw water from the first chamber to the second chamber by the valve body when the open / close valve is opened is provided. It can be stopped more reliably.

  Further, the spring does not necessarily have a structure for biasing the valve body from the second chamber toward the first chamber as a compression spring as in the above-described embodiment, and the plate chamber and the bellows are not necessarily used to urge the valve body from the second chamber to the first chamber. It is good also as a structure which urges | biases a valve body toward. Moreover, it is good also as a structure which urges | biases a valve body toward a 1st chamber from a 2nd chamber with the tension spring which attached one end to the separation wall and attached the other end to the valve body.

  Further, if the valve body moves to the first chamber side with the open / close valve opened so that the raw water in the first chamber cannot flow into the second chamber, the valve body is not necessarily provided on the central axis of the first chamber. It is not necessary to be provided, and it may be provided with a deviation from the central axis.

  Further, the outer diameter of the housing does not necessarily have a cylindrical shape with both ends closed as in this embodiment. That is, for example, even if the outer shape of the housing is a rectangular parallelepiped, the outer shape of the housing may be any as long as the first chamber is formed so that a swirling flow of raw water is generated in the first chamber.

  Further, as the material of the housing, the valve body, and the compression spring, various materials such as a resin material and a metal can be used as long as the effects of the present invention are exhibited.

  In addition, a special swirling means including a blade and a drive unit that generate a swirling flow of raw water in the first chamber may be specially provided in the flow path switching device. In this case, unlike the present embodiment, it is not necessary to form the fluid inlet and the first fluid outlet at a position where the raw water generates a swirling flow in the first chamber.

  Moreover, in the water purifier concerning this embodiment, since the flow-path switching apparatus serves as a check valve, it is not necessary to provide a check valve specially unlike the conventional water purifier. In addition, the water purifier can be easily retrofitted to existing kitchen water pipes. This makes it easy to switch between raw water and purified water.

  In addition, a pressure regulation valve is not necessarily required if the water purifier has a sufficient pressure resistance that can withstand the pressure of fluctuating tap water.

  Further, the notification unit does not have to be both a lamp and a buzzer, and may be either one.

  Further, the operation unit does not necessarily need to communicate with the control device wirelessly, and may be electrically connected by a cable. Moreover, the operation part does not necessarily need to be installed on the kitchen counter, and may be attached integrally with the control part.

  The opening / closing valve does not necessarily have to be opened / closed by operation of the operation switch and control of the control device. In other words, it may be a manual open / close valve having an appropriate knob on the open / close valve. In this case, the user can open and close the open / close valve even during a power failure, and the water purifier can be used during a power failure.

  Moreover, the spout from which raw | natural water and purified water flow out does not need to be shared like this embodiment. That is, the form which each flows out from the spout in which raw | natural water and purified water were provided separately may be sufficient. However, there is a merit that a single water outlet can be attached to an existing faucet rather than providing individual water outlets in this way.

  Further, the flow sensor is used only as a flow detection means for grasping the discharge timing of the raw water and the purified water flowing out from one discharge outlet, and is not essential because it is not an essential part of the present invention. .

  Moreover, unlike the above-mentioned embodiment, a 1st fluid exit part may be connected to the inlet side of a water purifier, and the 2nd fluid exit part may be connected to the bypass flow path which is a 2nd water discharging means. When such a structure is adopted, since the water purifier has a high flow resistance, the internal pressure in the swirl chamber rises and the negative pressure generated in the swivel center portion is canceled, so that the valve body tends to be difficult to suck. However, if the force in the direction of pressing the valve element against the opening of the internal flow path is assisted by an urging means such as a spring in consideration of the increase in internal pressure due to this negative pressure cancellation, There is no practical problem.

It is a schematic block diagram which shows the water purifier concerning one Embodiment of this invention. It is a schematic perspective view which shows transparently the flow-path switching apparatus of the water purifier shown in FIG. It is sectional drawing which shows the schematic structure at the time of making an on-off valve open in the flow-path switching apparatus shown in FIG. 2 with the flow of raw | natural water. It is sectional drawing which shows schematic structure at the time of making an on-off valve into a closed state in the flow-path switching apparatus shown in FIG. 2 with the flow of raw | natural water. It is explanatory drawing which contrasted the pressure which acts on the valve body of the flow-path switching apparatus shown in FIG. 3 and FIG. 4 intelligibly.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water purifier 10 Flow path switching apparatus 10a Housing (apparatus main body)
DESCRIPTION OF SYMBOLS 11 Primary side flow path 12 Secondary side flow path 13 Bypass flow path 14 Junction part 20 Water purifier 30 Pressure regulating valve 40 Water stop cock 50 Opening and closing valve 60 Control apparatus 62 Notification part 65 Flow sensor 70 Operation switch 90 Water stopper 91 Water discharge port 92 Lever 110 First chamber 111 Fluid inlet portion 112 First fluid outlet portion 120 Second chamber 122 Second fluid outlet portion 130 Separation wall 131 Internal flow path 132 Seating portion 134 Valve body support portion 140 Valve body 145 Compression spring 150 Open / close valve

Claims (4)

A water purifier that contains water purification material and purifies raw water into purified water;
A primary flow path for introducing raw water into the water purifier,
A first water discharging means for discharging purified water purified by the water purifier;
A flow path switching device provided in the middle of the primary flow path;
A second water discharge means that branches from the flow path switching device and discharges raw water without going through a water purifier;
An open / close valve provided in the middle of the second water discharge means,
The flow path switching device has a first fluid outlet portion and a second fluid outlet portion, one of which is connected to the inlet side of the water purifier and the other is connected to the second water discharge means. With
The apparatus body includes a first chamber having a swirl region for swirling raw water flowing into the apparatus body from a fluid inlet, a second chamber communicated with the first chamber through an internal flow path,
A swirl that has a valve body that blocks the flow of raw water from the first chamber to the second chamber in response to a negative pressure due to the swirling flow of the raw water in the first chamber, and that forms a swirling flow in the first chamber The flow forming means is provided, and the first fluid outlet is provided at a position that does not hinder the rotation of the raw water in the first chamber,
The second fluid outlet is provided in the second chamber;
In the open / close valve open state, the valve body prevents the raw water flowing into the apparatus main body from the primary side flow path through the fluid inlet part from flowing into the second chamber from the first chamber due to negative pressure due to the swirling flow. However, the water purifier is configured to discharge water from the first fluid outlet and to discharge water from the second fluid outlet through the internal flow path when the open / close valve is closed.   The first water discharging means and the second water discharging means are joined together through a merging portion and discharged from one water outlet, and the opening / closing valve is provided upstream of the second water discharging means of the merging portion. The water purifier according to claim 1, wherein The water purifier is a control device that controls opening and closing of the opening and closing valve;
An operation switch for instructing the control device to switch the raw water and purified water;
The water purifier according to claim 1 or 2, further comprising flow detection means provided on an upstream side of the flow path switching device to detect a flow of water.   The water purifier according to claim 3, further comprising a notifying unit for notifying an open / closed state of the open / close valve and a use timing of the purified water flowing out from the water discharge port according to claim 2.

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