JPH0450959Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a direct-connected water purifier that is directly connected to a water supply channel where reverse water pressure works, such as a water faucet. It is used to drain raw water, pass raw water through a purification agent and then drain it, or prevent raw water from flowing out.

(Prior Art) This type of water purifier is known from Japanese Utility Model Application Publication No. 136791/1983. Since this product has a complex structure, it has traditionally been made of synthetic resin to reduce manufacturing costs and product weight, taking advantage of the fact that it does not have very high pressure resistance and is small enough to be used at home. ing.

(Problems that the invention aims to solve) However, synthetic resins have lower pressure resistance than metals and fatigue quickly over time. For this reason, even if a device is designed to have sufficient pressure resistance and safety, it may not be able to withstand the pressure, or may become unable to withstand it depending on the situation. For example, even in the case of tap water, the water pressure can vary greatly depending on the region, and the water pressure can be quite high outside of times when many people are using it intensively, leading to the lack of pressure resistance as described above.

Such a situation is unavoidable in a directly connected water purifier that receives the water supply pressure as it is, and especially in the case of water stop switching state where the passage resistance is higher than the raw water straight flow switching state. Sometimes, the flow path is damaged due to a lack of pressure resistance, causing water to splash around. Splashing water can cause great damage when everyone is away from the area.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention has a raw water introduction path for introducing raw water, a raw water straight outflow path for directly flowing out the introduced raw water,
A purified water outflow path that purifies and flows out the raw water, a cutoff path that blocks the raw water from flowing out, and a switch that switches and connects any of these raw water straight outflow path, purified water outflow path, and cutoff path to the raw water introduction path. In a direct-connection type water purifier equipped with a valve, the cutoff channel and one of the outflow channels are formed adjacent to each other, and both adjacent walls have a thinner wall thickness than the other, thereby providing a predetermined effect on the water purifier. It is characterized by the provision of a safety wall that is lower than the pressure resistance and breaks before other parts when the pressure is below a predetermined pressure.

(Function) When the raw water introduction path leads to the cutoff channel by operating the switching valve, the raw water comes to a dead end in the cutoff channel and is stopped. Further, when the raw water introduction passage leads to a raw water straight outflow passage or a purified water outflow passage, the raw water is discharged as is or after being purified depending on the flow passage. As a result, any one of a water stop state, a raw water straight outflow state, and a purified water outflow state can be selectively obtained by operating the switching valve.

A straight raw water outflow channel allows raw water to pass through as is, and the passage resistance is not high or can be ignored, so even if the water supply pressure of raw water fluctuates depending on time and place, the flow channel is not affected by it. , raw water can flow out without difficulty even when the water supply pressure is relatively high.

Unlike the raw water straight outflow path mentioned above, a cutoff channel and purified water outflow channel stop the flow of raw water and allow it to pass through the purification agent and flow out while providing resistance, so the pressure of the raw water is easily affected, especially in a cutoff channel. This is remarkable, and the frequency of switching to the water stop state is much higher.

However, the cutoff channel is located on the wall adjacent to the raw water straight outflow channel or the purified water outflow channel, which has a thinner wall thickness than the other parts, so it is lower than the specified pressure resistance of the water purifier and is placed earlier than other parts when the pressure exceeds the specified pressure. If the water purifier is equipped with a safety wall that can break, and the water pressure is close to the pressure that the water purifier cannot withstand from the beginning or has become unable to withstand due to fatigue, the water purifier is most susceptible to water pressure and has to be switched much more frequently. The safety wall quickly responds and ruptures in the high cut-off channel, and part of the raw water flows out through the safety wall into the adjacent raw water stray other than itself and into the outflow path or purified water outflow path.

As a result, before the water pressure that the water purifier cannot withstand or is becoming unable to withstand acts on it and damages unspecified parts, the safety wall will almost certainly break and the raw water will be diverted to a different outlet than the one in use. By draining the water, the user can be informed that the water purifier is or is becoming unfit for use.

In addition, the outflow of raw water from an outflow path that is different from the usage state corresponding to the switching operation state of the switching valve due to a break in the safety wall is carried out through the raw water straight outflow path or purified water outflow path that is normally provided in the water purifier. This prevents water from splattering or flowing out in unspecified directions other than the specified outflow direction due to cracks or damage in unspecified parts of the product, and allows water to flow out in the range of directions and positions normally used. can.

(Embodiment) An embodiment of the present invention shown in FIGS. 1 to 9 will be described. An embodiment of the present invention shown in FIGS. 1 to 9 is shown for use with tap water by being attached to a water faucet 1. As shown in Figure 1, the connection port 2 to the faucet 1 is at the top end, and the outlet 3 is at the bottom end.
It is made of synthetic resin and has a water passage main body 4 with a handle, and a purified water outflow part 5 integrally formed on one side of the water passage main body 4 in a horizontal position. Water supply body 4
is a purified water outlet 5 between the connection port 2 and the outlet 3.
A valve chamber 7 having a communication port 6 is formed in a horizontal direction perpendicular to the respective axes of the water passage main body 4 and the purified water outlet portion 5.

The connection port 2 of the water passage main body 4 has an upper end port 9 located above the valve chamber 7 that communicates with the valve chamber 7 through a raw water inlet 8, and a screw 10 for connection to the faucet 1 is connected to the upper end of the upper end port 9. The holding fitting 11 is connected to the nut 12 with an inner flange.
The rubber seat rings 13 and 14 are sandwiched between the raw water inlet 8 and the connecting fitting 11. The lower rubber seat ring 13 has a flange 1 at the upper end of the sleeve 13a that fits into the inner periphery of the raw water inlet 8.
3b, and this flange 13b is the raw water inlet 8.
It is sandwiched together with another upper rubber seat ring 14 between the upper end and the lower end of the connecting fitting 11, so that the raw water inlet 8 reaches the opening of the upper rubber seat ring 14 to prevent water from leaking on the way. . Moreover, in order to prevent this water leakage, an annular protrusion 14a that bites into the flange 13b is provided on the lower surface portion of the upper rubber seat ring 14 that sandwiches the flange 13b from above and below, and the opposing portion of the upper end surface portion of the raw water inlet 8. 8a are formed, and by biting into the flange 13b, a more secure sealing state is obtained.

The connection fitting 11 is designed to connect the water passage main body 4 to the faucet 1 as shown in the imaginary line in FIG. Rubber seat ring 14
By bringing the faucet 1 and the raw water introduction chamber 9 into pressure contact with each other, the faucet 1 and the raw water introduction chamber 9 can be connected without leakage. An exterior ring 15 is attached around the outside of the connection fitting 11.

The valve chamber 7 is formed with a circular cross section as shown in FIG. 4, and a rotatable switching valve 16 made of synthetic resin is fitted into the valve chamber 7 from an opening 7a on the opposite side to the integrally formed portion of the purified water outlet portion 5. An end plate 17 made of synthetic resin is fitted into the opening 7a and fixed with screws 18 to prevent the switching valve 16 from coming off. The end plate 17 also connects the switching valve 16 to a communication port 6 with the purified water outlet 5 of the valve chamber 7.
the switching valve 1 from the central opening 17a of the end plate 17.
By protruding the operating rod 16a of No. 6 to the outside and fitting the operating lever 19 therein, the switching valve 16 can be externally operated by the operating lever 19.

An O-ring 20 is interposed between the switching valve 16 and the communication port 6, and an O-ring 21 is interposed between the inner side of the periphery of the opening 17a of the end plate 17 and the protrusion of the operating rod 16a of the switching valve 16. Further, between the outer periphery of the end plate 17 and the inner periphery of the valve chamber 7, O-rings 22 and 23 are interposed at two locations in the axial direction, front and rear, to provide a seal, respectively.

On the other hand, the outer periphery of the switching valve 16 includes a raw water straight outlet 3a and a raw water shower outlet 3 provided concentrically with the raw water inlet 8 and outlet 3 of the valve chamber 7.
The switching valve 16 has an outer periphery width that fits into the inner periphery of the portion where the communication ports 24 and 25 (FIGS. 1 and 4) are opened to the When in the water purification position shown in the figure, the water purification passage 26 is bent from the outer periphery of the switching valve 16 to the exposed end surface of the switching valve 16 to the communication port 6 so that the raw water inlet 8 communicates with the communication port 6, and the switching valve A cutoff channel 27 in a dead end state is bored halfway from the outer periphery of the switching valve 16 so as to communicate with the raw water inlet 8 at the water cutoff position of 16 as shown in FIG.
At the raw water position of the switching valve 16, as shown in FIG. The switching valve 1 is branched from the middle of the raw water straight communication path 28 as shown in FIG. 8 so that the raw water inlet 8 and the communication port 25 to the raw water shower outlet 3b communicate with each other.
A raw water shower communication path 29 that opens on the outer periphery of the tank 6 is formed.

Accordingly, depending on the position where the switching valve 16 is switched by the operating lever 19, in the raw water position, the raw water introduced from the raw water inlet 8 is passed through the purified water connection path 26 to the purified water outlet 5 as shown in FIGS. 1 and 4. At the water cut-off position, the raw water introduced from the raw water inlet 8 is received into the cut-off waterway 27 as shown in FIG. 6, where it reaches a dead end and is in a water-stop state. Furthermore, at the raw water position, the raw water introduced from the raw water inlet 8 is transferred to the straight raw water outlet 2 as shown in Figure 7.
At the shower position, the raw water introduced from the raw water inlet 8 is passed through a part of the raw water straight connection path 28 and the shower connection path 29 to the raw water shower as shown in FIG. Guided to the outlet 3b,
Raw water flows out in a shower shape from a large number of small holes 3c provided in the donut-shaped zone. Each of these switching positions is displayed in correspondence with a display 31 on the operating lever 19 and an indicator 30 protruding from the outer surface of the valve chamber 7, as shown in FIG.

On the outer periphery of the switching valve 16, each of the communication passages 26 to 2 is provided.
O-rings 41~ surrounding one or more of the openings of 9.
43 is provided, and each communication path 26 to 2 of the switching valve 16
This is to prevent unnecessary bypass or leakage of raw water between the opening 9 and the raw water inlets 8, 24, and 25 provided in the peripheral wall of the valve chamber 7.

Furthermore, the raw water inlet 8 is funnel-shaped, and the lower end of the funnel-shaped rubber seat ring sleeve 13a along its inner periphery is pressed against the outer periphery of the switching valve 16 with sufficient buckling strength. A seal is ensured between the mouth edge of the inlet 8 and the outer periphery of the switching valve 16 to prevent water from leaking around the raw water inlet 8 and each communication path 26 to 29 leading thereto.

The raw water straight outlet 3a and the raw water shower outlet 3b are formed on a synthetic resin end plate 44 screwed onto the lower end of the water passage body 4, and are connected to the double cylindrical communication passages 45, 46 in the water passage body 4. Through the communication port 24, 2
5, and an O-ring 47 is interposed between the inner side of the threaded joint between the end plate 44 and the lower end of the water passage main body 4 for sealing. Also, raw water straight outlet 3a
has a cylindrical shape and is joined to the cylindrical wall 48 between the communication passages 45 and 46, and an O-ring 49 is installed between the jointed fitting part.
It is sealed with a .

A wire mesh 50 is placed on the lower end flange 3d of the cylindrical raw water straight outlet 3a, and the flange 3
A spring ring 51 is fitted and fixed in the inner circumferential groove 3e located slightly above d, and a metal porous plate 52 having an elastic piece 52a on the outer circumference is press-fitted onto the upwardly facing stepped portion 3f of the inner circumference of the upper end. Keep calm,
A wire mesh 50 and a perforated plate 52 adjust the raw water forcefully sent in from the faucet 1 into a quiet and regular flow so that it flows out.

On the outer periphery of the base of the operating rod 16a of the switching valve 16, there are click stop recesses 16b, 16, as shown in FIGS. 1 and 5, corresponding to each switching position of the switching valve 16.
c, 16d, and 16e are formed, and the screws 18 are also used on the end plate 17 side, and the opening 17a is opened by the spring 53.
A click stopper 54 is held that is biased to protrude toward the inner surface, and elastic engagement between the click stopper 54 and each of the recesses 16b to 16e stabilizes each switching state of the switching valve 16. Changes in the switching state can be recognized by emitting an engagement sound.

As shown in FIG. 2, the purified water outflow section 5 removably accommodates a transparent filter container 63 having a raw water inlet 62 with a check valve 61.
is connected from above to a communication port 6 extending from the valve chamber 7 side. A removable transparent lid 64 is attached to the upper opening of the filtration container 63, and a primary filter chamber 66 that communicates with the raw water inlet 62 and the inside of the filtration container 63 is formed within the lid 64, and is filled with fibrous, foaming filter material, etc. The primary filters 67 and 68 are accommodated, and the filtration container 63 itself is equipped with a secondary filter 6 such as activated carbon.
It accommodates 9. As a result, the raw water entering the filtration container 63 passes through the primary and secondary filters 67, 68,
69, the water flows from the outlet 70 at the bottom of the filtration container 63 to the purified water outlet 71 at the bottom of the purified water outlet 5,
It flows outside as purified water.

The attachment/detachment port 7 of the filter container 63 is located at the upper end of the purified water outflow portion 5.
2 is formed, and a transparent lid 73 screwed onto this presses the filtration container 63 downward, and the raw water intake port 62 is reliably connected to the communication port 6 via an O-ring 65. It's getting old. The inside of the lid 64 of the filter container 63 can be seen through the lid 73, and since the amount of dirt on the upper part of the filter 67 is proportional to the cumulative usage time of the purified water outlet 5, it is possible to determine when to replace the filter by checking the amount of dirt. It can be used as a guideline. For this purpose, the primary filter 67
It is convenient to have a color that makes it easy to see changes in dirt.

The cut-off channel 27 in the switching valve 16 serves to block the raw water while accepting it, and in the cut-off state shown in FIG. 6 in which it operates, the water purifier is most susceptible to the water supply pressure of the raw water. Therefore, as shown in FIGS. 4 and 6 to 8, the cutoff channel 27 is constructed so that the water purification communication channel 26, which is one of the normal outflow channels in the switching valve 16, is a safety wall that is weaker than the predetermined pressure resistance strength of the water purifier. They are adjacent to each other via 81.

As a result, if the water purifier cannot withstand the water supply pressure from the beginning or has become unable to withstand it due to fatigue, the safety wall 81 will break quickly in the water cutoff state. This prevents unspecified parts of the water purifier from being damaged. When the safety wall 81 is torn, the cutoff channel 27 communicates with the purified water connection channel 26. Since the purified water connection path 26 is always connected to the purified water outlet 5 even in the water stop state shown in FIG. 6, the safety wall 8
1 flows into the purified water outflow part 5 and is made to flow out from the purified water outflow port 71.

This outflow direction is the same as the outflow state in the water purification state during normal use of the water purifier, so it is possible to avoid a situation where an unspecified part of the water purifier is damaged and water is splashed in a direction other than the normal outflow direction. It turns out. Further, it is possible to make the user confirm that the water purifier is unusable due to water flowing out even when the water is stopped, and prompt the user to replace it.

This can be achieved in the same way if it is between different types of outflow channels, but the water purification channel, raw water shower channel, It is advantageous if the safety wall 81 is also provided. Also safety wall 81
The location is not limited to the flow path in the switching valve 16, but may be provided at any location after the raw water inlet 8, excluding a location common to all usage conditions.
Then, water flows out from the outlet which is different from the switching state, so that the user can confirm that the device is not suitable for use as described above. Furthermore, the safety wall 8 of the flow path in which the safety wall 81 is provided is connected to other flow paths.
Adjacency through 1 is conveniently obtained by means of special passages extending the flow paths of one or both of them to the appropriate position.

The purified water outlet 5 is provided with an outlet 74 that opens in the same direction as the purified water outlet 71 in the vicinity of the purified water outlet 71 in a portion that accommodates the filter container 63.
If the filtration container 63 is damaged by water pressure in the same manner as the safety wall 81, water will also flow out from the outlet 74, allowing the user to confirm such a situation.

(Effects of the invention) According to the invention, there is a stop channel where the pressure of raw water is most likely to be affected and switching frequency is extremely high, and the wall adjacent to the straight raw water outflow channel or purified water outflow channel. Because the wall thickness is thinner than that of the water purifier, there is a safety wall that is lower than the predetermined pressure strength of the water purifier and breaks before other parts when the pressure exceeds the predetermined pressure. In response to water pressure that is close to the pressure that it is becoming impossible to withstand, the safety wall quickly responds and ruptures in the cutoff channel, which is most susceptible to the influence of water pressure and has a much higher frequency of switching, allowing water to flow through the safety wall to the adjacent water. Since the water purifier was made to partially drain into the outflow channel other than the water purifier itself, it is almost certain that the safety wall will be closed before unspecified parts are damaged due to water pressure that the water purifier cannot withstand or is becoming unable to withstand. The user discovered that the water purifier was unable to withstand use or had become unusable due to the water purifier breaking and causing a portion of the raw water to flow out into a flow path that was different from the usage state according to the switching operation state of the switching valve. It is possible to notify the customer and encourage them to replace the product with a new one or one with different specifications, so that normal use can be carried out.

In addition, due to a break in the safety wall, raw water flows out from a different outlet than the one in use, through the raw water straight outlet or purified water outlet that is normally installed in the water purifier, causing cracks and damage to unspecified parts of the water purifier. This prevents water from splashing or flowing in unspecified directions other than the specified direction, and allows water to flow in the direction and position normally used, so it can be used in the normal flow path of sinks and other plumbing facilities. Even if the outflow occurs unexpectedly, it is possible to avoid getting wet not only the area around the plumbing facility but also areas other than the normal flow path in the plumbing facility.

[Brief explanation of drawings]

Figures 1 to 9 show the first embodiment of the present invention. Figure 1 is a cross-sectional view taken along the axis of the water flow body in the water purification switching state, and Figure 2 is a cross-sectional view of the entire body along the axis of the water flow body in the water purification switching state. A cross-sectional view of the entire body taken along the axis of the purified water outflow part in the same state as Figure 1, a rear view of the entire body taken in section at the purified water outflow part, and Figure 4 a cross-sectional view of the whole body seen in section at the water flow main body. Overall front view in the same state as in Figure 1,
Figure 5 is a cross-sectional view of the water flow main body at a different position from Figure 4, and Figures 6 to 8 are cross-sectional views at the same position as Figure 4. FIG. 9 is a sectional view of the water passage main body in different switching states of water stop, raw water, and shower, and FIG. 9 is a front view of the entire body. {2... connection port, 8... raw water inlet, } (raw water inlet), 16... switching valve, {3a... raw water straight outlet, 28... raw water straight connection channel, 45
...Connection path, } (raw water straight outflow path), {3b...
...Raw water shower outlet, 29...Raw water shower connection path, 46...Connection path, } (raw water shower outflow path),
{5...Purified water outflow part, 6...Communication port, 26...Purified water connection path, 71...Purified water outflow port,} (Purified water outflow path),
27...Stop water, 81...Safety wall.

Claims (1)

[Scope of Claim for Utility Model Registration] A raw water introduction channel that introduces raw water, a raw water straight outlet channel that allows the introduced raw water to flow out as it is, a purified water outlet channel that purifies the raw water and drains it, and a water purification channel that is shut off to prevent the raw water from flowing out. A direct connection type water purifier comprising a cutoff channel and a switching valve that selectively connects any one of the raw water straight outflow channel, purified water outflow channel, and cutoff channel to the raw water introduction channel, wherein the cutoff channel and each of the outflow channels A safety wall that is formed adjacent to one wall and has a thinner wall thickness than the other, so that it is lower than the predetermined pressure resistance of the water purifier and breaks before the other parts when the pressure is lower than the predetermined pressure. A direct-connection water purifier characterized by the following.