JPH0657486U - Water purifier - Google Patents

Abstract

(57) [Abstract] [Purpose] Even if there is some variation in the positional relationship between the discharge port fitting part on the water purifier body side and the outer case fitting part or the fitting dimensions, this fluctuation is absorbed and water leaks. To provide a water purifier that can prevent [Composition] Equipped with a filtration unit that can be attached to and detached from the water purifier body,
Raw water is supplied to the inlet of the filter through the water purifier body, filtered by the filter, and then filtered water is discharged from the outlet of the filter through the water purifier body. The filtering unit has a bottomed cylindrical outer case and a filter unit that is housed in the outer case and has a filter medium attached thereto.The discharge port is provided at the center of one end side of the filter unit. It is located in the central portion on the opening end side of the outer case and is swingable in the radial direction with respect to the outer case. The inflow port is provided on the opening end side of the outer case and on the outer periphery of the discharge port.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a water purifier for filtering tap water, particularly a household water purifier.

[0002]

[Prior art]

 Conventionally, water purifiers that are attached directly to the faucet of the faucet and can easily filter tap water have been used in general households. This type of water purifier is equipped with a water purifier body and a filter part that can be attached to and detached from the water purifier body, supplies raw water to the inlet of the filter part through the water purifier body, and after filtering with the filter part. The filtered water is discharged from the discharge port of the filtration unit through the water purifier body. By the way, in the conventional structure of the filtering section, the filter unit is housed in the outer case, the lid member is fixed to the opening of the outer case, and the discharge port is provided at the center of the lid member. It has a structure with multiple inlets on the outer periphery. Therefore, the raw water entering from the inflow port flows in from the outer peripheral part of the filtering part, and the purified water after filtering is discharged from the discharge port in the central part.

[0003]

[Problems to be solved by the device]

 When the lid member with the discharge port is fixed to the outer case as described above, since the position of the discharge port is fixed with respect to the outer case, water leakage etc. may occur when the outer case is attached to the water purifier body. Problems may occur. In other words, the water purifier body is provided with a screw fitting part that is screwed into the outer case and a receiving port that fits into the discharge port, but to prevent water leakage between the outer case and the water purifier body. , There must be a reliable seal between the outlet and the receiver, and between the outer case and the screw fitting of the water purifier body. However, there may be some variations in the positional relationship between the water inlet of the water purifier body and the screw fitting part, or in the dimensions of the screw fitting.If there is any variation, the positional relationship between the outer case and the discharge port may occur. Is constant, there is a possibility of poor sealing. In particular, the water purifier is used under relatively high water pressure, so even a slight seal failure can easily cause water leakage. Conventionally, in order to deal with such a seal failure, a special packing such as a V-shaped packing having a large dimension absorption allowance is used, but this kind of packing is expensive.

[0004] Further, it is known that a conventional filtering section has activated carbon as a filter material on the outer periphery and a hollow fiber membrane is housed in the central portion, and raw water flowing from the inlet of the outer periphery is activated carbon and chlorine. After the odor and mold odor are removed, the hollow fiber membrane removes turbidity and red rust, and the filtered water is discharged from the discharge port in the center. In this case, it is desirable that the raw water that has flowed in from the inlet contacts the activated carbon and hollow fiber membranes as evenly as possible, but in the conventional filtration section, the activated carbon is filled up to the inner surface of the outer case, so Due to imbalance and other factors, the raw water was locally unevenly distributed and could not exert a sufficient filtering effect. In particular, since the raw water concentrates near the entrance of the outer case, the activated carbon and hollow fiber membrane in the inner part of the outer case are not effectively used.

Therefore, a first object of the present invention is to absorb this variation even if there is some variation in the positional relationship between the discharge port fitting portion on the water purifier body side and the exterior case fitting portion, and absorb the water. It is to provide a water purifier that can prevent leakage. A second object is to provide a water purifier in which the contact area between the raw water and the filter medium is increased, the filtration effect is improved, and the filter medium can be effectively used.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention comprises a water purifier body and a filter part detachable from the water purifier body, and supplies raw water to the inlet of the filter part through the water purifier body to filter the raw water. In the water purifier in which filtered water is discharged from the discharge port of the filtering unit through the water purifier main body after being filtered by the section, the filtering unit is housed in a bottomed cylindrical outer case and the outer case. And a filter unit with a filter medium attached, and the discharge port is provided at the center of one end of the filter unit, and the discharge port is located at the center of the open end of the outer case, and The inlet is provided on the opening end side of the outer case and on the outer circumference of the outlet, and is connected to the water purifier body in a sealed state with the outlet. The connecting part and the outer case are connected in a sealed state. Characterized in that the outer case connecting portion is provided that is.

[0007]

[Action]

 To install the filtration unit to the water purifier body, insert the outlet of the filtration unit into the outlet connection of the water purifier body, and fit the outer case to the outer case connection. At this time, since the outlet of the filtration unit can swing in the radial direction with respect to the outer case, there is some variation in the positional relationship and dimensions between the outlet connection of the water purifier body and the outer case connection. Also, this variation is absorbed by the swinging of the discharge port, and it is possible to reliably seal the space between the discharge port and the discharge port connecting part and between the outer case and the outer case connecting part with a simple packing such as an O-ring. . Therefore, it is not necessary to use expensive packing such as V-type packing.

In the present invention, a fitting portion is provided at the other end of the filter unit, and a positioning fitting portion for positioning the fitting portion of the filter unit at a central position is formed at the bottom of the outer case. It is desirable to provide an annular space between the outer peripheral surface of the container and the inner peripheral surface of the outer case where raw water is introduced from the inlet. In this case, the raw water flowing in from the inflow port enters the annular space, and the raw water uniformly contacts the outer peripheral surface of the filter unit. Therefore, the contact area between the raw water and the filter medium is remarkably wider than the conventional one, the filtration effect is improved, and all the filter media can be effectively used. The filtered water that has passed through the filter unit toward the center is discharged from the discharge port at the center.

[0009]

【Example】

 1 to 4 show an example of a water purifier according to the present invention. This water purifier is roughly composed of a water purifier main body 1 and a filter unit 2 which is attachable to and detachable from the water purifier main body 1. A connection port 3 that is connected to the faucet of the faucet is provided on the upper portion of the water purifier body 1, and an annular packing 4 that is in close contact with the faucet is arranged in the connection port 3. A valve chamber 5 is integrally formed under the connection port 3. One end side (left side in FIG. 3) of the valve chamber 5 is closed, and the other end side is open. As shown in FIG. 3, an inflow port 6 communicating with the connection port 3 is formed in the upper part of the valve chamber 5, and a first outlet 7 for discharging the raw water downward as it is is formed in the lowermost part. In addition, the valve chamber 5 is formed with a second outlet 8 that opens horizontally in one side with the first outlet 7 in between, and a third outlet (not shown) that opens diagonally downward on the opposite side. Are formed. The inflow port 6 and the first to third outlets 7 and 8 are provided on the same circumference. The second outlet 8 communicates with the filtering section 2 via connecting pipes 9 and 10 (see FIG. 2), and the third outlet showers via a shower chamber 11 formed around the first outlet 7. It communicates with the hole 12.

A valve body 13 is rotatably inserted into the valve chamber 5, and a wide mouth opening 14 and an outlet hole 15 are formed in the valve body 13 at a position obliquely below the opening 14. The opening 14 and the outlet hole 15 communicate with each other. The opening 14 is formed so as to face the inflow port 6 in all switching positions of the valve body 13, and also faces the second outlet 8 when using filtered water. Further, the outlet hole 15 is formed in a size corresponding to the first outlet 7 or the third outlet. A switching lever 17 is fitted to a shaft portion 16 of the valve body 13 that projects laterally from the valve chamber 5, and the open side of the valve chamber 5 is sealed by double O-rings 18 and 19, and The water that has entered the chamber 5 is prevented from leaking to the outside.

As shown in FIG. 5, the filtering section 2 is composed of a bottomed cylindrical outer case 20 and a filter unit 21 housed in the outer case 20. The filter unit 21 has a substantially cylindrical resin holder 22, and a large number of hollow fiber membranes 23 are accommodated in the holder 22 in a U-shaped bent state. The opening end of the hollow fiber membrane 23 is fixed to the opening of the holder 22 by a sealing material (not shown), and only water that has penetrated from the outer periphery of the hollow fiber membrane 23 into the hollow fiber membrane 23 passes through the hollow fiber membrane 23. And flows out from the open end. Flanges 24, 24 are formed at both ends of the holder 22, and fibrous activated carbon 25 is wound in layers around the outer periphery of the holder 22 between the flanges 24. The inner and outer peripheries of the activated carbon 25 are covered with a nonwoven fabric 26. It is being appreciated. The outer diameter of the filter unit 21 is smaller than the inner diameter of the outer case 20, so that an annular space 27 is formed between the filter unit 21 and the outer case 20. The holder 22 is provided with a large number of communication ports 28, and water passing through the activated carbon 25 enters the holder 22 through the communication ports 28 and is filtered by the hollow fiber membrane 23. One end of the holder 22 facing the bottom of the outer case 20 is closed, and a convex portion 29 that is a fitting portion is integrally formed at this end. The convex portion 29 is fitted in a concave portion 30 formed on the bottom of the outer case 20 and is positioned at the center position. A discharge port cover 31 is fitted to the other end of the holder 22 via an O-ring 32, and a cylindrical discharge port 33 is provided at the center of the discharge port cover 31. The water filtered by the hollow fiber membrane 23 is discharged from the discharge port 33.

A case cover 34 that prevents the filter unit 21 from coming off is screwed to the inner surface of the opening of the outer case 20 via an O-ring 35. In addition to or in place of screwing, bonding may be performed, or other arbitrary methods may be used for fixing. A through hole 36 for loosely inserting the discharge port 33 is formed at the center of the case cover 34, and a plurality of inflow ports 37 are formed at the outer peripheral portion of the through hole 36. A strainer 38 is arranged between the case cover 34 and the discharge port cover 31 to remove a large suspended matter contained in the raw water entering from the inflow port 37. As described above, the discharge port 33 is loosely inserted into the through hole 36, and a gap δ (see FIG. 5) is provided between the outer peripheral surface of the discharge port cover 31 and the inner peripheral surface of the case cover 34. Therefore, the discharge port 33 can swing in the radial direction with respect to the outer case 20. On the outer periphery of the end of the case cover 34, a male screw 34a that is screwed into the water purifier body 1 is formed. The gap δ does not come into contact with the outer case 20 when the filter unit 21 swings, and the positional variation between the female screw 43 and the receiving port 45, which will be described later, and the fitting between the female screw 43 and the male screw 34a. The size is set to absorb variations.

As shown in FIG. 2, a connecting member 40 for detachably mounting the filtering unit 2 is fixed to the water purifier body 1. The connecting member 40 includes a communication port 41 to which one end of the connecting pipe 10 is connected, and a female screw (external case connecting portion) 43 into which the male screw 34a of the case cover 34 is screwed via an O-ring 42. A receiving port (discharging port connecting portion) 45 into which the discharging port 33 is fitted via an O-ring 44 is provided. A transparent discharge pipe 46 is connected to the connecting member 40 so as to communicate with the receiving port 45, and a water amount indicator 47 is housed inside the discharge pipe 46. This water amount indicator 47 is urged toward the receiving port 45 by a spring 48, and the position of the indicator 47 is visually observed through a window 49 (see FIG. 4) integrally formed with the discharge pipe 46, thereby discharging the water. You can check the amount of water.

In the water purifier having the above structure, raw water sent from the valve chamber 5 via the connection pipes 9 and 10 passes through the communication port 41, the inflow port 37, and the strainer 38, and then the outer case 20 and the filter unit 21. Enter the annular space 27 between. Therefore, the raw water comes into contact with the activated carbon 25 provided on the outer peripheral portion of the filter unit 21 all around, and passes through the layer of the activated carbon 25 toward the center to remove chlorine and musty odors, and the holder The turbidity, red rust, etc. are removed by the hollow fiber membrane 23 arranged in the internal space through the communication port 28 of 22 and the filtered water is discharged from the discharge port 33. As described above, since the raw water flowing from the inlet 37 is allowed to enter the annular space 27, the raw water is not unevenly distributed near the inlet as in the conventional case even if the water pressure is unbalanced. It contacts the activated carbon 25 and the hollow fiber membrane 23 over a wide area. Therefore, all the activated carbon 25 and the hollow fiber membrane 23 can efficiently filter.

Here, a method of replacing the filtering unit 2 will be described. First, the outer case 20 (case cover 34) is rotated and removed from the female screw 43 of the water purifier body 1 (connecting member 40). At this time, since the case cover 34 is fixed to the opening of the outer case 20, the filter unit 21 and the case cover 34 are detached from the water purifier body 1 integrally with the outer case 20. Then, the exterior case 20 accommodating the new filter unit 21 is attached to the water purifier body 1 to complete the replacement. When the outer case 20 is screwed into the water purifier body 1, if the positional relationship between the receiving port 45 of the water purifier body 1 and the female screw 43 or the screw dimensions of the female screw 43 and the male screw 34a vary, water leakage or the like may occur. There is a possibility that the trouble of occurs. However, since the discharge port 33 is swingable in the radial direction with respect to the outer case 20, the variation is absorbed by the swing of the discharge port 33, and the gap between the discharge port 33 and the receiving port 45 and the case cover 34 are eliminated. The O-rings 42 and 44 can reliably seal between the female screw 43 and the female screw 43.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the invention. For example, although the filter unit 21 and the case cover 34 are integrally fixed to the outer case 20 in the above embodiment, the filter unit 21 and the case cover 34 are attachable to and detachable from the outer case 20, and Only the unit 21 may be replaceable. In this case, parts such as the outer case 20, the case cover 34, and the discharge port cover 31 can be shared, which is very economical. Further, in the above-described embodiment, the convex portion 27 of the filter unit 21 is fitted into the concave portion 28 of the outer case 20 for positioning, but the present invention is not limited to this. For example, the concave and convex portions may be reversed or the filter unit 21 may be blocked. The side flange 24 may be applied to the inner surface of the outer case 20 and held at the center position. Further, in the present invention, it is not essential to form the annular space 27 between the outer case 20 and the filter unit 21, and the outer peripheral surface of the filter unit 21 is brought into contact with the inner peripheral surface of the outer case 20 so that raw water You may make it filter while flowing in the axial direction of the filter unit 21. Further, the filtering structure of the filter unit of the present invention is not limited to the one in which activated carbon is attached to the outer peripheral portion and the hollow fiber membrane is attached to the inside, and the filter medium can be arbitrarily selected.

[0017]

[Effect of device]

 As is clear from the above description, according to the present invention, since the outlet of the filtering portion can be swung in the radial direction with respect to the outer case, the outlet connecting portion of the water purifier body and the outer case connecting portion can be moved. Even if there is some variation in the positional relationship with the discharge port, this variation is absorbed by the vibration of the discharge port, and the O between the discharge port and the discharge port connection part and between the outer case and the outer case connection part is The effect is that a simple packing such as a ring can be used for reliable sealing.

[Brief description of drawings]

FIG. 1 is a partially sectional front view of an example of a water purifier according to the present invention.

FIG. 2 is a partial cross-sectional view taken along the line AA of FIG.

3 is a partial cross-sectional view taken along the line BB of FIG.

FIG. 4 is a partial cross-sectional view taken along the line CC of FIG.

FIG. 5 is a cross-sectional view of a filter unit.

[Explanation of symbols]

 1 Water Purifier Main Body 2 Filtration Part 20 Exterior Case 21 Filter Unit 22 Holder 23 Hollow Fiber Membrane 25 Activated Carbon 27 Annular Space 29 Convex Part (Fitting Part) 30 Recessed Part (Positioning Fitting Part) 33 Discharge Port 34 Case Cover 37 Inlet Port 46 Discharge pipe

Claims (2)

[Scope of utility model registration request] 1. A water purifier main body, and a filter part detachable from the water purifier main body. Raw water is supplied to the inlet of the filter part through the water purifier main body, filtered by the filter part, and then filtered. In a water purifier configured to discharge water from a discharge port of a filtering unit through a water purifier body, the filtering unit includes a bottomed cylindrical outer case, a filter unit housed in the outer case, and having a filter medium attached thereto. The discharge port is provided at the center of the filter unit on one end side, the discharge port is located at the center of the outer case on the opening end side, and is swingable in the radial direction with respect to the outer case. The inlet is provided on the opening end side of the outer case and on the outer periphery of the outlet, and in the water purifier body, the outlet connecting portion that is connected to the outlet in a sealed state, and the outer case. With the outer case connecting part that is connected in a sealed state A water purifier characterized by being provided with. 2. The water purifier according to claim 1, wherein a fitting portion is provided at the other end of the filter unit, and the fitting portion of the filter unit is positioned at the center position on the bottom portion of the outer case. A water purifier characterized in that a fitting portion is formed, and an annular space into which raw water is introduced from an inlet is formed between the outer peripheral surface of the filter unit and the inner peripheral surface of the outer case.