JPH0688021B2 - Water purification equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a water purifying device for purifying tap water by being attached to a faucet of a water supply, and more specifically, a device main body even if attached to a faucet for both water cooling and hot water. The present invention relates to a highly safe water purifying device in which hot water does not enter.

[Conventional technology]

In recent years, pollution by various organic and inorganic substances such as tap water has become a big problem. This is thought to be due to an increase in pollution of water supply sources and deterioration of water tanks and pipes found in high-rise houses and buildings. In order to obtain more delicious and safe water reflecting such circumstances, various small-sized water purification devices are generally used as tap water treatment devices that can be easily used in homes, offices, restaurants, etc. ing.

The above-mentioned tap water treatment device usually has a built-in tap water treatment material such as activated carbon, an ion exchange resin, and a separation filtration membrane, and these tap water treatment materials deodorize, clarify, sterilize, and soften tap water. Processing such as conversion is performed.

In the above tap water treatment device (water purification device), it is necessary to periodically replace the treatment material in order to maintain its treatment capacity at a high level for a long time, and the treatment material itself is used as a water purification device that can be easily exchanged. Cartridge (JP-A-59
-76514, JP-A-60-190206, JP-A-49-1
27053, JP 55-167412, JP 57-608
No. 80, etc.) are known. Further, in the above-mentioned water purification device, the device body is provided with a faucet (water pipe) through an arm-shaped introducing member for introducing raw water from the water supply into the device.
It is also known that there is a faucet-mounted purifying device that is directly connected to and used. Further, these generally used water purifiers may be used by being attached to a cold / hot water common faucet capable of supplying both tap water and hot water.

[Problems to be Solved by the Invention]

However, in the conventional water purifier, no consideration is given to prevent the inflow of hot water, and therefore, when the hot water tap is opened by mistake, hot water flows into the main body of the water purifier, For example, there is a problem that residual chlorine, trace organic substances, hardness components, etc. in tap water once adsorbed on activated carbon are desorbed and eluted to the purified water side, and the purified water exhibits an unpleasant odor and taste. At the same time, there is also a problem that the separation filtration membrane such as the hollow fiber filtration membrane is deteriorated, and the replacement time of the water purification cartridge is accelerated.

Therefore, an object of the present invention is to provide a water purification device that can prevent hot water from flowing into the device body even if the hot water is accidentally introduced into the water purification device. Especially.

[Means for Solving the Problems]

According to the present invention, a purification cartridge is detachably attached to a block base having a raw water supply section and a purified water delivery section, and a hot water prevention mechanism for preventing hot water from flowing into the water purification cartridge is provided. In the water purifying device, the hot water prevention mechanism is provided in an arm-shaped introduction member that is connected to the base block in the raw water supply section and has a water pipe connection section, Is provided with a flow path for supplying tap water to the raw water supply section and a raw water derivation section, both the flow path and the raw water derivation section communicate with the water pipe connection section, and a water flow to either one by a switching valve. It is possible to switch, and in the flow path, a valve mechanism,
The above object is achieved by providing a water purifying apparatus characterized in that a shape memory alloy for driving a valve body of the valve mechanism is arranged downstream of the valve mechanism.

[Action]

In the present invention, since the hot water prevention mechanism is provided at an appropriate position of the water purification device, hot water is prevented from flowing into the device body.

〔Example〕

 An embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a cross-sectional view showing the outline of a water purifying apparatus which is an embodiment of the present invention. The water purifying apparatus of the present embodiment is a faucet-mounting type purifying apparatus whose main body is composed of a purifying cartridge 1 and a block base 2 to which the water purifying cartridge 1 is attached. Introducing member 3 is continuously provided and is connected to faucet (water pipe) 4 at water pipe connecting portion 301 provided near the end of introducing member 3. This connection can be made by direct screwing together, for example, by using a faucet joint formed by union joining. Incidentally, the perspective view of FIG. 5 shows the manner of use of the water purifying device in a more understandable manner.

First, the introduction member and the hot water prevention mechanism provided in the introduction member will be described.

The introduction member 3 is made of a tubular body in which a flow path 302 for supplying raw water to the apparatus main body is formed, and the water pipe connection portion 301 is provided in the upper part near the end thereof. The faucet is screwed and connected as shown in. Further, the introduction member 3 is configured to be rotatable in the plane direction around the water pipe connection portion 301.

Further, a raw water lead-out portion 303 is provided at a lower portion of the introduction member 3 located below the water pipe connection portion 301,
A switching valve provided between the two is configured to switch the water flow from the tap water in either the direction of the flow path 302 or the direction of the raw water outlet 303. In addition, it is desirable that the raw water outlet 303 is connected to the discharge pipe 304 as shown by a phantom line.

The switching valve is composed of a valve element 305 and a valve seat 306,
By turning the knob 307 attached to the end,
The gap between the valve body 305 and the valve seat 306 can be adjusted. A rubber member 308 is attached to the valve body 305.

In this embodiment, a hot water prevention mechanism is further provided inside the introducing member 3. That is, the hot water prevention mechanism is provided on the apparatus main body side adjacent to the switching valve, the hot water prevention valve body 309 oriented in the opposite direction to the valve body 305, and its valve shaft. A support member 310 having a central hole through which the claw is inserted and having four claws in the periphery, and a coil positioned between the support member 310 and the hot water prevention valve body 309 and winding the valve shaft thereof. And shape memory alloy 311. Further, the hot water prevention valve body 309 also includes a rubber member 308.
Is worn.

Incidentally, in order to make the structures of the switching valve and the hot water prevention mechanism described above easier to understand, the members positioned inside the introducing member 3 constituting them are shown in the exploded perspective view of FIG.

Next, the water purification cartridge 1 and the block base 2 constituting the apparatus main body of the present embodiment will be described in detail. The water purification cartridge 1 is detachably attached to the block base 2.

The water purification cartridge 1 has a circular inner cylinder 102 inside a cylindrical outer container 101, and has a double-structured container portion in which the cross section is concentrically arranged. The upper end substance is pressed against the outer container 101 with an O-ring, or is tightly fixed by heat fusion or the like. Also,
The water purification device, an inlet 104 for allowing water to flow into an outer space 103 formed by the outer container 101 and the inner cylinder 102,
It has an outlet 106 through which water flows out from an inner space 105 located inside the inner cylinder 102.

The outer space 103 and the inner space 105 are the inner cylinder.
Water is communicated through water passage holes 107 formed at four locations around 102, and water is configured to be able to flow into the inner space 105, and is separated through a second filter 108, so that the next activated carbon 109 is generated. It is configured so as not to enter the inner space 105. Then, the outer space 103 is filled with activated carbon 109 and the inner space 105 is loaded with a separation filtration membrane 110,
The water purification cartridge 1 in this embodiment is configured.

In addition, the block base 2 has a raw water supply unit 21 for flowing raw water into the inflow port 104, and the outflow port 10.
Purified water delivery unit 2 for delivering purified water discharged from 6
2 is formed. And, in the raw water supply unit 21,
The above-mentioned introduction member 3 is continuously provided with its one end fitted. Further, the purified water delivery part 22 is fitted in a close contact state with the outlet 106 via an O-ring wound around the outlet, and the purified water delivery part 22 is provided with a Z-shaped discharge. tube
23 is rotatably connected.

Next, the operation of this embodiment will be described. In the figure, the flow of water is indicated by an arrow.

First, the introducing member 3 is rotated to position the apparatus main body at an appropriate position in the sink, for example, at the center thereof. Then, the tap is opened and the knob 307 is further turned to switch the flow of the raw water (tap water) to the flow path 302 side, that is, the apparatus main body side, whereby the raw water can be sent to the raw water supply section 21. In that case, it goes without saying that a gap is formed between the hot water prevention valve body 309 and the valve seat 306. After that, from the raw water supply unit 21 through the inflow port 104, the outer space 1
The water flowing into 03 passes through the activated carbon 109, is then introduced into the inner space 105 through the water passage hole 107, and is further purified by passing through the separation filtration membrane 110, and the outlet 16
Then, the purified water is sent from the purified water sending part 22. as a result,
The purified water is thoroughly purified, and the purified water is discharged from the discharge pipe 23.
It can be taken out and used for beverages and the like.

In this way, the knob should be
While rotating 307 in the opposite direction to switch the water flow to the side of the raw water outlet 303, the introducing member 3 is rotated to move it to a position that does not interfere with the use of the sink, for example, its corner.
By doing this, you can secure enough space for the sink,
It can be easily used as ordinary water supply.

If hot water accidentally flows into the introducing member 3 when the water purifying apparatus is used as described above, the hot water is prevented by the alloy 311 as soon as the hot water touches the shape memory alloy 311. The valve body 309 is driven to the right in the figure, and the gap between the waterproof valve body 309 and the valve seat 306 is closed, so that further inflow of hot water is blocked. Therefore, hot water is effectively prevented from flowing into the main body of the apparatus. Incidentally, FIG. 1 shows a state after the hot water prevention mechanism is activated.

After the hot water prevention mechanism operates as described above, in order to return to the original usable state, wait for the inflowing hot water to cool, and at the water pressure of the tap water, the hot water prevention valve body 309 and the above Valve seat 3
A gap should be formed again with 06. However, the present invention is not limited to this method, and as the valve body 305 of the switching valve, a valve body having a protrusion 312 as shown in FIG. Prevention valve body 309
It is also possible to adopt a method of forcibly retracting the valve to form a gap between the hot water prevention valve body 309 and the valve seat 306.

In addition, at least 60 is placed in the water purification cartridge 1.
The temperature of the raw water that flows into this mechanism should not start when the temperature of the raw water that flows into this mechanism starts to operate at about 40 ° C. When the temperature reaches 60 ° C, the hot water prevention mechanism of the present invention also operates as a check valve when low temperature water is used. . That is, when low-temperature water is flowing in, since the shape memory alloy has no proof stress, the shape-memory alloy is pushed back by the water pressure of the incoming low-temperature water in use.
When the water pipe side is depressurized, the hot water prevention valve body 309 is biased toward the valve seat 306 side, and the gap between the two is closed, so that it also functions as a check valve.

Next, the water purification device of this embodiment will be described in more detail.

In the water purification cartridge 1, at the lower end of the outer space 103, a first filter 113 sandwiched and fixed by a filter guard 111 located above and a mounting seat 112 located below is attached to the central axis of the inner cylinder 102. And is installed vertically, and prevents foreign matter such as iron rust from entering the outer space 103 and at the same time serves to enclose the activated carbon 109 in the space.

The filter guard 111 is a member having a planar structure shown in FIG. 2 (a) and a sectional structure shown in FIG. 2 (b). Holes 114 for guiding the raw water flowing from the inflow port 104 to the first filter 113 are evenly arranged.

In addition, the above-mentioned second filter 108 covers a wide range beyond the formation region of the above-mentioned water passage hole 107 and the above-mentioned inner cylinder 102.
It is wrapped around the entire outer circumference. The outer peripheral wall of the inner cylinder 102 around which the second filter 108 is wound is formed one step lower than the adhesive outer peripheral surface portion thereof, and has a narrow gap between the outer peripheral wall and the inner surface of the second filter 108. The water pocket 115 is formed, and as a result, the filtration area of the second filter 108 can be increased, and the processing capacity is improved.

Both the first filter 113 and the second filter 108 described above are preferably formed of, for example, a porous material having a pore size of 0.5 to 5 μ, and specifically, synthetic polymers such as polyolefin, polyester, and polyvinyl alcohol. A non-woven fabric made of a compound, cotton, cellulose or the like may be used.

In addition, the activated carbon 109 filled in the outer space 103 described above.
Is unfavorable such as residual chlorine in raw water, trace organic substances, hardness components (specifically, ions such as sodium, potassium, magnesium, and iron. Water containing a large amount of these has bad taste). The activated carbon used in the present invention has an average particle size of preferably 5 to 100 mesh, and more preferably 8 to 60 mesh, which functions to remove odors or substances having a taste.
Incidentally, for the above purpose, it is not necessarily limited only to activated carbon, ion exchange resin, chelate resin,
It is also possible to use an adsorbent such as zeolite together.

In addition, the separation filtration membrane 1 loaded in the inner space 105 described above.
10 is a permeation of water that has passed through the activated carbon 109, by the fine pores formed in the wall portion of the separation filtration membrane 110, iron colloids present in the water, dust, micro-suspended substances such as bacteria. It works by filtering and purifying.

The separation / filtration membrane 110 in the present embodiment comprises a hollow fiber bundle formed by bundling a large number of porous hollow fiber filtration membranes, and the hollow fiber bundle has a U-shaped loop at the upper end thereof. Both ends of the bent porous hollow fiber filtration membrane are converged and fixed by the tube plate 116 made of resin located at the lower end portion, and the both ends of the porous hollow fiber filtration membrane are opened at the lower surface portion of the tube sheet 116. It has been done. However, the hollow fiber bundle is not limited to the one in which the porous hollow fiber filtration membrane is bent in a U shape at the upper end portion as described above, and has a structure in which the upper end portion is solidified and sealed with resin. Good.

As the porous hollow fiber filtration membrane applied to the hollow fiber bundle,
The film thickness is preferably 30 ~ 200μ, 30 ~ 150μ
Is more preferable, and the average pore size of the micropores measured by a mercury porosimeter is preferably 0.05 to 5 µ, more preferably 0.1 to 2 µ, and the porosity is 20 It is preferably from 90 to 90% by volume, more preferably from 50 to 80% by volume. Specific examples thereof include porous hollow fiber filtration membranes of polyolefin type, polysulfone type, polyvinyl alcohol type, cellulose type, polymethyl methacrylate type and the like.
As the separation / filtration membrane filled in the inner cylinder 102,
Not limited to the above porous hollow fiber filtration membrane,
It goes without saying that a porous flat membrane or the like can also be used.

Further, in the present embodiment, both the inflow port 104 and the outflow port 106 are located near the lower end of the water purification cartridge, and conversely, the water passage hole 107 is located near the upper end of the water purification cartridge 1. There is. Therefore, the water purification cartridge 1 is formed in a compact parallel structure having a double structure in which its cross section is located concentrically, but for the water flow, the activated carbon 109 and the separation filtration membrane 110 are connected in series. All of them are arranged, and the flow paths are long so that they can be sufficiently contacted with water. Therefore, activated carbon 10
9 and the separation filtration membrane 110 can sufficiently exhibit the purification performance originally possessed.

The water purification cartridge 1 is a block base 2
The water purification cartridge 1 can be easily replaced by rotating the water purification cartridge 1 by means of a threaded portion 24 at the upper end thereof.
However, the mounting method of the water purification cartridge 1 is not limited to the screwing method.

Further, the water purifying cartridge 1 is provided with an air venting mechanism 117 communicating with the inner space 105 on the upper wall surface thereof. This air bleeding mechanism 117 is for easily and quickly discharging the air in the water purification cartridge 1 when the raw water is introduced from the inflow port 104 to the raw water treatment section composed of activated carbon 109 and the like. belongs to. Incidentally, the actual air bleeding is possible by sticking a hydrophobic membrane that allows air but not raw water to the air vent of the air vent mechanism 117, or by opening the air vent by touching a screw, or by hand. It can be carried out by a method such as pressing with to open the air vent port.

Incidentally, each member constituting the water purification device, except for the above-mentioned activated carbon 109 and separation filtration membrane 110, is not particularly limited, for example, a metal such as stainless steel, copper, aluminum, or an alloy thereof. , Or ABS
It is preferable to manufacture the resin or plastic such as polycarbonate resin.

Although the present invention has been specifically described based on the embodiments, it goes without saying that the water purifying apparatus of the present invention is not limited to the ones shown in the embodiments.

For example, the hot water prevention mechanism is not limited to the hot water prevention valve mechanism provided with the coil-shaped member made of a shape memory alloy, but may be a mechanism using a bimetal or an oil element. However, considering the compactness and simplicity of the water purifier, it is preferable to use the hot water prevention valve mechanism rather than the mechanism using the bimetal or oil element. Further, the installation position of the hot water prevention mechanism is not particularly limited to that of the embodiment, and in the block base as long as it can substantially prevent heat from flowing into the apparatus main body, especially the water purification cartridge. It may be.

Further, although the faucet mounting type is shown as the water purifying device, it goes without saying that the present invention may be applied to a stationary water purifying device which is connected to the faucet via a hose.

Further, the introduction member does not have to be rotatable around the water pipe connection portion, and can be variously changed as long as it is an arm-shaped tubular body provided with an arbitrary water flow switching means.

Further, a check valve for preventing backflow from the water purification cartridge may be provided at an appropriate position, for example, a block-based raw water supply unit.

In addition, the block base is provided with a raw water supply unit that allows raw water to flow into the inlet of the water purification cartridge and a purified water delivery unit that can deliver purified water discharged from the outlet of the water purification cartridge. It goes without saying that the specific structure can be variously changed and the shape of the discharge pipe connected to the purified water delivery unit can be arbitrarily changed.

〔The invention's effect〕

The water cleaning apparatus of the present invention can prevent the hot water from flowing into the apparatus body even if the hot water is accidentally introduced into the water purifying apparatus. In addition, it is possible to prevent the deterioration of the processing material and the occurrence of failure due to hot water.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an outline of a water purification apparatus which is an embodiment of the present invention, FIG. 2 (a) is a plan view showing a filter guard used in the water purification apparatus, and FIG. 2 (b). ) Is a sectional view thereof, FIG. 3 is an exploded perspective view for explaining a hot water prevention mechanism applied to the water purification device, and FIG. 4 is a sectional view showing another hot water prevention valve body, and FIG. The figure is a perspective view showing an outline of the water purification device. 1 ... Water purification cartridge 2 ... Block base 3 ... Introducing member 101 ... Outer container, 102 ... Inner cylinder 103 ... Outer space, 104 ... Inlet 105 ... Inner space, 106 ... Outlet 107 …… Water passage hole 108 …… Second filter, 109 …… Activated carbon 110 …… Separation filter membrane 111 …… Filter guard 113 …… First filter 21 …… Raw water supply section, 22 …… Purified water delivery section 301… … Water pipe connection, 302 …… Flow path 303 …… Raw water outlet, 305 …… Valve 309 …… Hot water prevention valve 311 …… Shape memory alloy

Continuation of the front page (56) Reference JP-A-63-59386 (JP, A) JP-A-60-99379 (JP, A) JP-A-60-220107 (JP, A) Actual development 61-75892 (JP , U)

Claims (2)

[Claims] 1. A hot water prevention mechanism, in which a cleaning cartridge is detachably attached to a block base having a raw water supply section and a purified water delivery section, and hot water is prevented from flowing into the water purification cartridge. A water purifier provided, wherein the hot water prevention mechanism is provided in an arm-shaped introduction member that is connected to the base block in the raw water supply section and has a water pipe connection section. The member is provided with a flow path for supplying tap water to the raw water supply section and a raw water outlet section, and both the flow path and the raw water outlet section communicate with the water pipe connecting section and are connected to either one by a switching valve. A water purifier capable of switching the water flow, wherein a valve mechanism and a shape memory alloy for driving a valve body of the valve mechanism are arranged downstream of the valve mechanism in the flow path. . 2. The water purification cartridge has a double-structured container portion in which an inner cylinder is disposed inside an outer container, and an inlet for allowing raw water to flow into an outer space formed by the outer container and the inner cylinder. , And an outlet for discharging purified water from an inner space located inside the inner cylinder, and the outer space and the inner space are communicated with each other through a water passage hole formed in the inner cylinder. And is isolated through a filter,
The outer space is filled with activated carbon and the inner space is loaded with a separation filtration membrane, and water introduced into the outer space from the raw water supply unit through the inflow port passes through the activated carbon, Next, the water purification apparatus according to claim (1), wherein the water purification apparatus is introduced into the inner space through the water passage hole, further permeated through the separation filtration membrane to be purified, and is then delivered from the purified water delivery section through the outlet. .