JP4085727B2 - Water purifier - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water purifier suitable for removing chlorine odors and bacteria such as tap water.
[0002]
[Prior art]
As a water purifier, it has a filtration part that incorporates an adsorbent such as activated carbon and a hollow fiber membrane, and a main body that selectively switches the flow path by opening and closing the flow path such as purified water, raw water straight, raw water shower with a valve body. In addition, a stationary type, a faucet direct connection type, and an undersink type are known.
[0003]
In these water purifiers, in order to discharge shower water, a method of discharging water from a shower supply port generally having a large number of small holes called shower holes is used. However, the flow channel (hereinafter referred to as the shower inlet) in the water purifier main body that communicates with the channel selector and the shower supply port has a smaller cross-sectional area than the shower supply port, so it flows from the shower inlet. However, the water is not evenly distributed to each shower hole, and there is a problem that the shower water is uneven depending on the position of the shower supply port.
[0004]
One method for improving the shape of the shower water is to provide a rectifying means at a position intermediate between the shower introduction port on the upstream side of the shower supply port and the shower supply port. For example, when an annular rectifier as shown in Japanese Utility Model Publication No. 3-4983 is provided, the water introduced from the shower inlet is uniformly dispersed in the circumferential direction by the annular rectifier and then showered. It is discharged from the hole. However, according to this method, there are problems that the number of parts increases, resulting in an increase in cost and difficulty in making the water purifier compact.
[0005]
[Problems to be solved by the invention]
An object of the present invention is to provide a water purifier having a good shower water shape and capable of being made compact.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a flow path switching device including a plurality of flow paths and a valve body that selectively opens and closes the plurality of flow paths, and any one of the flow paths is a shower inlet. And a shower supply port, and a water purifier provided directly below the shower introduction port and provided with a rectifying means that is substantially flush with the shower supply port and includes a central concave portion and a peripheral convex portion. .
Another embodiment of the present invention includes a flow path switching device including a plurality of flow paths and a valve body that selectively opens and closes the plurality of flow paths, and one of the flow paths is a shower inlet. A rectifier comprising a central concave portion and a peripheral convex portion which is provided in only a part of the circumferential direction on the substantially same plane as the shower supply port. It is a water purifier provided with means.
Another embodiment of the present invention includes a flow path switching device including a plurality of flow paths and a valve body that selectively opens and closes the plurality of flow paths, and one of the flow paths is a shower inlet. A shower supply port, which is directly below the shower introduction port, and has a central concave portion and a peripheral convex portion on substantially the same plane as the shower supply port, and the height of the convex portion is 0.5 to It is a water purifier provided with rectifying means in a range of 10 mm.
Another embodiment of the present invention includes a flow path switching device including a plurality of flow paths and a valve body that selectively opens and closes the plurality of flow paths, and one of the flow paths is a shower inlet. A rectifying means is provided directly below the shower introduction port and substantially on the same plane as the shower supply port, and comprising a central concave portion and a peripheral convex portion. The water purifier has a plurality of shower holes, and the ratio L / D of the length L of each shower hole in the shower supply port and the diameter D of the shower hole is in the range of 0.5 to 7. .
Another embodiment of the present invention includes a flow path switching device including a plurality of flow paths and a valve body that selectively opens and closes the plurality of flow paths, and one of the flow paths is a shower inlet. A rectifying means having a central concave portion and a peripheral convex portion is provided on the substantially same plane as the shower supply port. It is a water purifier in which the means is integrally formed.
[0007]
And in the water purifier of this invention, it is preferable that the said rectification | straightening means is provided only in a part of circumferential direction of the said shower supply port.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings, taking a water purifier attached to a water faucet such as a home kitchen as an example. In addition, this invention is not limited to a faucet direct connection type water purifier, It is also preferable to implement in a stationary water purifier etc.
[0009]
A water purifier 1 shown in FIG. 1 includes a main body 11 having a flow path switch 19 built therein, a water purifier cartridge 12 and the like.
[0010]
The water purifier main body 11 has a raw water inlet 15 that is an inlet of raw water from a water tap (not shown) at the top, and a flow path switch 19 that switches the flow path of the raw water is provided inside the body 18. On the upper part of the body 18, a fixture 14 is provided for connection to a water tap. As shown in FIG. 1, the fixture 14 includes a ring-shaped rubber packing 20, a holding ring 21, and a cap 22, and there is no water leakage due to the female screw and the male screw formed on the cap 22 and the body 18, respectively. A water tap (not shown) and the body 18 are connected.
[0011]
Inside the body 18, an upper chamber 18e and a lower chamber 18f partitioned by a partition plate 18d are formed. The upper chamber 18e is provided with one raw water inlet 15 that is an inlet of raw water, and the lower chamber 18f is provided with three raw water outlets that are raw water outlets 16, a raw water supply port 17, and a shower supply port 17a. Is provided. The partition plate 18d is provided with three water passages 18a, 18b, and 18c. The upper chamber 18e is provided with spherical valve bodies 18a1, 18b1, and 18c1 so as to be watertightly engaged with the water passages 18a, 18b, and 18c from above.
[0012]
As the valve bodies 18a1, 18b1, and 18c1, a metal sphere or a metal sphere covered with rubber is used. However, the shape of the valve body is not limited to a sphere, and may be a conical shape, a cylindrical shape, or an umbrella shape. And in order to improve the sealing performance when the water passage is closed, the valve bodies 18a1, 18b1, 18c1 provided in the upper chamber 18e may be urged from above by the spring in the direction of the water passage.
[0013]
The water purifier body 11 is provided with a lever 19a. By operating the lever 19a, whether the raw water flowing in from the raw water inlet 15 is discharged as shower water as it is (raw water shower) or as straight water (raw water straight) ), Can be switched by selecting whether to discharge as purified water.
[0014]
The flow path switch 19 is provided with a seal ring 23d at a predetermined position of the spool shaft 23 and is water-tightly engaged with the inner wall surface of the lower chamber 18f, whereby the water passages 18a, 18b, 18c are respectively connected to the raw water intake port 16, It communicates with the raw water supply port 17 and the shower supply port 17a. Further, cam portions 23a, 23b, 23c for pushing up the valve body are provided at predetermined positions (predetermined positions facing the respective water passages) of the spool shaft 23, and these cam portions 23a, 23b, 23c By rotating the shaft 23 by 90 °, for example, the shaft 23 is selectively directed upward to push up the corresponding valve body. Here, if the amount of push-up of the valve body is set to 1 to 2 mm, a sufficient amount of water flow can be ensured. Therefore, the body 18 having the upper chamber 18e and the lower chamber 18f can be reduced in size, and the amount of staying water can be reduced to be sanitary. Then, by rotating the spool shaft 23 by a predetermined angle by the lever 19a, the lower part of the corresponding valve body is pushed up among the valve bodies 18a1, 18b1, 18c1 to open the corresponding water passage, and the raw water inlet 15 It can be selectively communicated with the outlet 16, the raw water supply port 17 or the shower supply port 17a. In addition, 19b is a click stop mechanism, and the rotation position of the spool shaft 23 can be set easily.
[0015]
Here, in this embodiment, since the number of valve bodies corresponding to the fluid passage is selectively opened and closed, there is no need to forcibly move the elastic body, and the switching operation force is kept small. Sufficient sealing performance and durability can be exhibited. And by switching the flow path by simply moving the valve body up and down as in this embodiment, the travel distance of the valve body can be reduced, the flow path switch can be downsized, and the structure Can be simplified, and the work becomes easy even during assembly and disassembly. Furthermore, since the flow path switching device can be miniaturized, the amount of accumulated water in the flow channel switching device is reduced, and it becomes more sanitary.
[0016]
The body 18 and the flow path switching unit 19 may be formed of a plastic such as acrylonitrile / butadiene / styrene copolymer (ABS) or polypropylene (PP).
[0017]
The valve elements 18a1, 18a2, 18a3 are preferably made of non-corrosive members so as not to be rusted by chlorine contained in water such as tap water. For example, plastic, stainless steel, carbon steel is plated with chromium. It is preferable to use things. And in order to make a sealing performance and durability higher, it is preferable that the valve bodies 18a1, 18b1, and 18c1 are rigid bodies so that they are not deformed or damaged even if they are repeatedly switched.
[0018]
In the water purifier 10 of this embodiment configured as described above, first, when the lever 19a is rotated clockwise to the 3 o'clock state, the raw water from the water tap flows in from the raw water inlet 15 and the spool shaft 23 It flows out as straight water from the raw water supply port 17 through the water passage 18b and the spool shaft 23 released by pushing up the sphere 18b1 by the cam portion 23b.
[0019]
Next, when the lever 19a is rotated 90 degrees counterclockwise to the 12 o'clock state, the valve body 18a1 is pushed up by the cam portion 23a of the spool shaft 23 and the water passage 18a is opened. The raw water that has flowed from the water reaches the raw water outlet 16 by switching the flow path (the state shown in FIG. 1). Since the water purifier cartridge 12 and the water purifier main body 11 are in close contact with each other via the ring-shaped rubber packing 39, the raw water that has reached the raw water outlet 16 is not leaked to the outside from this portion. It is supplied to the raw water receiving port 24. The raw water supplied to the raw water receiving port 24 passes through the activated carbon layer 29 and the U-shaped hollow fiber membrane bundle layer 28 in this order from the hole of the filter 33, is purified, and flows out from the filtered water supply port 25 as purified water. .
[0020]
Further, when the lever 19a is rotated 180 degrees from the 12 o'clock state to the 6 o'clock state, the valve body 18c1 is pushed up by the cam portion 23c of the spool shaft 23 and the water passage 18c is opened. The raw water flowing in from the water flows out as shower water from the shower supply port 17a through the shower introduction port 40.
[0021]
The water purifier of this embodiment is characterized in that the rectifying means 50 is provided on substantially the same plane as the shower supply port 17a. When the flow path switching unit is switched to shower water as described above, the raw water flowing in from the raw water inlet 15 passes through the water passage 18c and finally flows out from the shower supply port 17a. The shower introduction port 40 is a channel in the lower chamber 18f that communicates the water passage 18c and the shower supply port 17a. Since the lower chamber 18f must also be provided with a flow path communicating with the raw water supply port 17 and the raw water intake port 16, the shower introduction port 40 cannot have a large cross-sectional area. Therefore, the water flowing in from the shower introduction port 40 flows while greatly expanding toward the shower supply port 17a, but it is difficult for the water to be uniformly distributed to each shower hole, and the shower water depends on the position of the shower supply port 17a. There was a problem of unevenness on the way out.
[0022]
As a means for solving such a problem, an annular rectifying means as shown in Japanese Utility Model Publication No. 3-4983 is provided at a position intermediate between the shower introduction port upstream of the shower supply port and the shower supply port. It has been broken. The water introduced from the shower inlet flows in the circumferential direction along the groove provided in the rectifying means in the circular rectifying means. And since water flows down toward a shower supply port after being uniformly disperse | distributed in the circumferential direction, it is discharged uniformly from a shower hole. However, according to this method, the number of parts increases, the manufacturing process increases, and the manufacturing difficulty increases. Therefore, there are problems that the manufacturing cost increases and the water purifier is difficult to downsize.
[0023]
In this embodiment, as shown in FIGS. 1, 2, and 3, the rectifying means 50 is provided on substantially the same plane as the shower supply port 17a by crushing a part of the shower hole. Since it is not necessary to provide a rectifying means between the shower introduction port 40 and the shower supply port 17a as in the prior art, the water purifier can be made compact. Furthermore, since such a rectifying means can be integrally formed with the shower supply port 17a in manufacturing, the number of parts can be reduced and the manufacturing cost can be reduced.
[0024]
The difficulty of this method is that it is necessary to crush a part of the shower hole as shown in FIG. 2, but the inventors have studied and found that the shower hole distribution as shown in FIG. It was found that the shower water shape was obtained, and the advantages of compactness and low cost were greater.
[0025]
The rectifying means 50 of this embodiment may be provided at any portion on the substantially same plane as the shower supply port 17a as long as it is provided at least directly below the shower introduction port 40, as shown in FIGS. It is preferable to provide it only in a part in the circumferential direction because it is possible to avoid unnecessarily damaging the shower holes.
[0026]
Further, as shown in FIG. 1, the shape of the rectifying means includes a central concave portion 50a and a peripheral convex portion 50b, and the height of the convex portion 50b is 0.5 to 10 mm with respect to the bottom of the concave portion 50a. Preferably there is. As for the height of the convex part 50b, the range of 1-8 mm is more preferable, and the range of 1-5 mm is further more preferable. Once the water flowing down from the shower supply port 17a is received in the central recess, the water is dispersed in all directions when the water flows over the surrounding convex portions, so that the water is evenly distributed in each shower hole. be able to.
[0027]
Moreover, it is preferable that L / D of this shower hole is the range of 0.5-7. L / D is more preferably in the range of 0.5 to 5, and further preferably in the range of 1 to 3. Here, L is the length of each shower hole in the shower supply port 17a, and D is the diameter of the shower hole. When L / D is large, the flow resistance of water increases, so that it becomes easy to uniformly disperse water in each shower hole. However, if the L / D is too large, not only water will not flow easily, but it will also be difficult to form shower holes, resulting in increased manufacturing costs. On the other hand, when L / D is reduced, water tends to flow, but it becomes difficult to uniformly disperse water in each shower hole. By providing the rectifying means of the present invention and setting the L / D of the shower hole in the above range, water can easily flow and a good shower water shape can be obtained.
[0028]
In addition, in the said embodiment, although the aspect which provided the rectification | straightening means in the flow path of what is called a raw water shower from which raw | natural water flows out as a shower was demonstrated, the purified water purified through the water purifier cartridge 12 is filtered water supply port. In the case of providing a so-called clean water shower that flows out in a shower form from 25, a rectifying means may be provided in the flow path. In this case, the filtrate water supply port 25 corresponds to a shower supply port, and a flow path for introducing purified water after passing through the activated carbon layer 29 and the U-shaped hollow fiber membrane bundle layer 28 to the filtrate water supply port 25 is introduced into the shower. It corresponds to the mouth. Of course, it is also preferable to provide rectification means in both the raw water shower channel and the purified water shower channel.
[0029]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the shape of shower water is favorable and can provide the water purifier which can be reduced in size.
[Brief description of the drawings]
FIG. 1 is a schematic longitudinal sectional view showing an embodiment of a water purifier of the present invention.
FIG. 2 is a bottom view showing an embodiment of the water purifier of the present invention.
FIG. 3 is a top view showing an embodiment of the shower supply port of the water purifier of the present invention.
[Explanation of symbols]
15 Raw water inlet 16 Raw water outlet 17 Raw water supply port 17a Shower supply port 18 Body 18a, 18b, 18c Water passage 18a1, 18b1, 18c1 Valve element 18d Partition plate 18e Upper chamber 18f Lower chamber 23 Spool shaft 23a, 23b, 23c Cam portion 40 Shower introduction port 50 Rectification means 50a Rectification means recess 50b Rectification means projection

Claims (6)

A flow path switcher with a valve body for selectively opening and closing a plurality of flow passages and a plurality of flow path thereof, any of the flow path and a shower introduction port and the shower supply port, the shower It is directly below the inlet and water purifier rectifier means consisting of said shower supply port and the center of the recess substantially on the same plane as the surrounding convex portion is provided. A plurality of channels and a channel switch provided with a valve body that selectively opens and closes the plurality of channels, and any one of the channels has a shower introduction port and a shower supply port, and the shower A water purifier provided immediately below the introduction port and provided with a rectifying means provided on only a part in the circumferential direction on substantially the same plane as the shower supply port and comprising a central concave portion and a peripheral convex portion. A plurality of channels and a channel switch provided with a valve body that selectively opens and closes the plurality of channels, and any one of the channels has a shower introduction port and a shower supply port, and the shower A rectifying means is provided immediately below the introduction port and comprising a central concave portion and a peripheral convex portion on substantially the same plane as the shower supply port, and the height of the convex portion is in the range of 0.5 to 10 mm. Water purifier. A plurality of channels and a channel switch provided with a valve body that selectively opens and closes the plurality of channels, and any one of the channels has a shower introduction port and a shower supply port, and the shower A rectifying means is provided immediately below the introduction port and substantially on the same plane as the shower supply port, and having a central recess and a peripheral projection, and the shower supply port has a plurality of shower holes, and the shower A water purifier having a ratio L / D between the length L of each shower hole at the supply port and the diameter D of the shower hole in a range of 0.5 to 7. A plurality of channels and a channel switch provided with a valve body that selectively opens and closes the plurality of channels, and any one of the channels has a shower introduction port and a shower supply port, and the shower A water purifier which is directly under the introduction port and is provided with a rectifying means comprising a central concave portion and a peripheral convex portion on substantially the same plane as the shower supply port, and the shower supply port and the rectification unit are integrally formed. The water purifier in any one of Claims 3-5 in which the said rectification | straightening means was provided only in a part of circumferential direction of the said shower supply port.

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