JP3137167U - Water purifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure a minimum chlorine concentration while filtering tap water in a household water purifier.
A cylindrical case main body having an outer peripheral space, a filter receiving portion having an inner space, and a filter are provided. A first filter part having a hollow cylindrical body disposed concentrically and having a function of removing chlorine contained in the passing tap water, and a position surrounded by the first filter part. A second filter portion having a lower chlorine removing function than the first filter portion; and an upper plate that shields an upper end of the first filter portion and covers an upper portion of the second filter portion; and the outer peripheral space and the first filter The space on the outlet channel side from the filter is communicated by a communication channel formed below the first filter.
[Selection] Figure 1

Description

  This device relates to a water purifier used at home.

  Generally, water purifiers for tap water used for home use are connected to individual pipes at the end from which tap water is discharged, such as water faucets for kitchen sinks and hot water inlets for water heaters for bathrooms. ing.

  As shown in FIG. 3, in this water purifier 100, tap water exiting the water tap 2 flows into the water purifier 100 from the inflow side pipe connection part 104 a provided on one side of the substrate part 104 through the pipe. To do. As shown by the arrows in FIG. 3, the inflowed water passes through the annular groove 104b provided on the upper surface of the base 104, and between the cylindrical casing 105 made of SUS305 sheet metal and the turbidity filter 107 made of nonwoven fabric or the like. Into the annular gap 106. The water in the gap 106 rises in the gap 106 and gradually flows inward, passes through the turbidity filter 107, and flows into the annular gap 108 between the turbidity filter 107 and the fibrous activated carbon filter 109. To do. The water in the gap 108 rises in the gap 108 and gradually flows inward, passes through the fiber activated carbon filter 109, and flows into the annular gap 110 between the fiber activated carbon filter 109 and the ceramic filter 111. To rise.

  The turbidity filter 107, the fiber activated carbon filter 109, and the ceramic filter 111 are supported on the base portion 104 via a filter support plate 113. Further, the upper ends of the turbidity filter 107, the fiber activated carbon filter 109, and the ceramic filter 111 are fitted to the lower surface of the upper plate 114, and the upper plate 114 is further covered with a head cap 115 so that the upper plate 114 is covered. An upper space 116 is formed between the head cap 115 and the head cap 115.

  Water that passes through the turbidity filter 107 and the fiber activated carbon filter 109 or rises through the annular gaps 106, 108, 110 flows into the ceramic filter 111 from above. The water descending in the ceramic filter 111 passes through the antibacterial filter 112 and flows into the base portion 104, and flows out from the water injection pipe through the outflow side pipe connection portion 104c.

  As a method for filtering tap water by the water purifier 100, first, foreign matters having a size of 30 μm or more are removed by the turbidity filter 107, chlorine and organic substances are removed by the fiber activated carbon filter 109, and ceramics of the ceramic filter 111 are then removed. Contact. The ceramic filter 111 includes piezoelectric electronic ceramics that improve surface activity and penetration, far-infrared ceramics that improve dissolution and thermal conductivity, mineral ceramics that improve taste, and improvements in dissolution and penetration. It contains grains of ceramics such as magnetic ceramics and copper ion ceramics for antibacterial purposes.

  A part of the water rising through the annular gap 106 along the inner periphery of the cylindrical casing 105 flows into the upper space 116 from the gap between the outer edge of the upper plate 114 and the head cap 115, but the upper space Since 116 is in a closed state, the inflowing water stays in the upper space 116. Therefore, all the water flowing in from the inflow side pipe connection part 104a and flowing out from the outflow side pipe connection part 104c passes through the fiber activated carbon filter 109, and chlorine is removed in the fiber activated carbon filter 109.

  By the way, in Japan, chlorine sterilization is obliged based on water quality standards. According to the provisions of this water quality standard, the chlorine concentration must be at least 0.1 ppm for water coming out of taps. In the case of a faucet-directly connected water purifier, it is not in violation of the water quality standards to remove chlorine immediately before using the water from the faucet for drinking to make it suitable for drinking. That is, even if 100% of chlorine contained in the water exiting the faucet is removed by the water purifier, no particular problem occurs.

  In recent years, a water purifier was installed between a water main from a water purification facility and a branch pipe to a terminal water supply device in a condominium meter box, etc., and water used at home was filtered and sterilized together. Later, there has been an increasing demand for supplying tap water to water faucets in kitchen sinks and water heaters in bathrooms. In the case of such a water purifier, by using a relatively spacious space called a meter box, the space in the vicinity of individual water supply devices at the end of the home such as a kitchen can be used more widely. There are advantages.

  However, in such a water purifier, if chlorine is removed 100%, the water quality standard that the chlorine concentration of the water coming out from the tap must be 0.1 ppm or more will not be observed. In addition, when the terminal water supply equipment in the home is not used for a long period of time, tap water containing almost no chlorine may stay in the branch pipe for a long period of time, which may cause corrosion or generation of germs.

  In order to solve such conventional problems, the present invention is installed in the downstream of a water meter, and in a water purifier for collectively filtering and sterilizing water used in the home, it passes water It aims at providing the water purifier which makes it possible to ensure the chlorine content of water and does not have a complicated structure.

  The water purifier of the present invention that achieves the above object includes a cylindrical case body having an outer peripheral space communicating with an inlet channel, and a filter having an inner space provided in the cylindrical case body and communicating with an outlet channel. And a filter mounted on the filter receiving part and partitioning the outer peripheral space and the inner space. The filter has an annular gap between the inner peripheral surface of the cylindrical case body and the annular gap in the cylindrical case body. A first filter part having a hollow cylindrical body disposed concentrically and having a function of removing chlorine contained in tap water passing therethrough, and a position surrounded by the first filter part. A second filter part having a lower chlorine removing function than the first filter part; and an upper plate that shields an upper end of the first filter part and covers an upper side of the second filter part. And the space of the outlet flow passage side than the spatial first filter characterized by comprising in communication with the communication passage formed below the first filter.

  In a preferred embodiment of the water purifier, the communication channel is a communication channel formed below the first filter, and the outer peripheral space and a space between the first filter and the second filter are provided. It is a flow path which communicates. Alternatively, the communication channel is a communication channel formed below the first filter and is a channel that connects the outer peripheral space and the inner space.

  As described above, according to the present invention, tap water that passes through the bypass channel does not pass through the first filter section, and therefore passes through the filter in a state containing chlorine and does not pass through the bypass channel. In order to merge with water, a predetermined chlorine content is ensured as the whole tap water passing through the filter. Therefore, by applying it to a water purifier that is attached to a meter box and used at home to filter and sterilize the water used at home, the chlorine concentration flowing out from the end water supply equipment such as a water tap can be reduced. It can be maintained to the extent that the standard is met. Moreover, in the present invention, there is no need to provide a bypass flow path above the first filter, and a flow path that connects the outer peripheral space and the space between the first filter and the second filter, or a communication flow path is provided. In addition, since the flow path that connects the outer peripheral space and the internal space constitutes a bypass flow path that bypasses the fiber activated carbon filter and bypasses it, the entire structure of the water purifier can be simplified. .

Hereinafter, the water purifier 1 of Embodiment 1 of this invention is demonstrated based on FIG. The water purifier 1 of the present embodiment, as schematically shown in FIG. 1, has a cylindrical case body 4 having an outer peripheral space 3 communicating with an inlet channel,
A filter receiving portion 7 having an internal space 6 provided in the cylindrical case body 4 and communicating with the outlet channel 5;
A filter 8 mounted on the filter receiving portion 7 and separating the outer peripheral space 3 and the inner space 6;
The filter 8 is included in the tap water passing through and forming a hollow cylindrical body concentrically disposed in the cylindrical case body 4 with an annular gap 10 between the inner peripheral surface 9 of the cylindrical case body 4. A first filter part 11 having a function of removing chlorine, a second filter part 12 disposed at a position surrounded by the first filter part 11 and having a lower chlorine removing function than the first filter part 11; An upper plate 13 that shields the upper end of the first filter part 11 and covers the upper side of the second filter part,
The outer peripheral space 3 and the space on the outlet flow channel side from the first filter are communicated by a communication flow channel 14 formed below the first filter 11.

  The water flowing into the water purifier 1 from the water main through the inflow side pipe passes through the annular outer peripheral space 3 provided on the upper surface of the lower base 15, and passes through the cylindrical case body 4 made of sheet metal and the first filter portion 11. It flows into the annular gap 10 between certain fiber activated carbon filters. The water in the annular gap 10 rises in the annular gap 10 and gradually flows inward, passes through the first filter portion 11, and enters the annular gap 16 between the second filter portion 12 and the ceramic filter. Inflow and rise.

The first filter portion 11 and the second filter portion 12 are supported on the lower base 15 via the filter receiving portion 7. The upper ends of the first filter portion 11 and the second filter portion 12 are joined to the lower surface of the upper plate 13.
The water that has passed through the first filter part 11 and has risen through the annular gap 16 flows into the second filter part 12 from above. The water descending in the second filter portion 12 passes through the antibacterial filter and the like, flows into the filter receiving portion 7, and flows out to the branch pipe via the outlet channel 5.

The outer peripheral space 3 and the space on the outlet flow channel side from the first filter are communicated by a communication flow channel 14 formed below the first filter.
The partial enlarged view of FIG. 1 shows the case where the communication flow path 14 is a flow path in a mode of communicating the outer peripheral space 3 and the space 10 between the first filter and the second filter. FIG. 8 shows another embodiment of the part surrounded by a circle in FIG. 1, and shows the case where the communication channel 14 is a channel in a mode of communicating the outer peripheral space 3 and the inner space 6.

  A communication flow path 14 that connects the outer peripheral space 3 and the space 10 between the first filter portion 11 and the second filter portion 12, or a communication flow that connects the outer peripheral space 3 and the inner space 6. The path 14 constitutes a bypass flow path that bypasses the fiber activated carbon filter and bypasses it.

  Thus, in the water purifier 1 of this Embodiment, all the water which flows in from an inflow side piping connection part and flows out from an outflow side piping connection part is the fiber activated carbon filter like the case of the said conventional water purifier. Instead of passing, some of the tap water passes through a bypass channel that avoids passing through the fiber activated carbon filter. Therefore, most of the chlorine contained in this part of the water remains without being removed, and as a result, the content of chlorine contained in the tap water passing through the water purifier can be ensured.

  By changing the opening diameter and length of the communication flow path as appropriate and setting the flow rate ratio of tap water flowing through the bypass flow path, the chlorine concentration of tap water that has passed through the water purifier 3 should be set to a required concentration. Is possible.

It is a figure which shows the longitudinal cross-section of the water purifier of embodiment of this invention. It is a fragmentary sectional view which shows other embodiment of this invention. It is sectional drawing which shows the conventional water purifier.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water purifier 3 Outer peripheral space 4 Cylindrical case main body 6 Internal space 11 1st filter part 12 2nd filter part 14 Communication flow path

Claims (3)

  A cylindrical case body having an outer peripheral space communicating with the inlet flow path, a filter receiving portion provided in the cylindrical case main body and having an internal space communicating with the outlet flow path, and mounted on the filter receiving portion; A filter that partitions the outer peripheral space and the inner space, and the filter is a hollow cylindrical body that is disposed concentrically with the inner peripheral surface of the cylindrical case main body with an annular gap in the cylindrical case main body. And a first filter part having a function of removing chlorine contained in tap water passing therethrough, and a first filter part disposed at a position surrounded by the first filter part and having a lower chlorine removing function than the first filter part. 2 filter parts, and the upper board which shields the upper end of the said 1st filter part, and covers the upper part of the said 2nd filter part, It exits from the said outer periphery space and the said 1st filter Characterized by comprising in communication with the roadside space communicating passage formed below the first filter, water purifier.   The water purifier according to claim 1, wherein the communication channel is a channel that communicates the outer peripheral space with a space between the first filter and the second filter.   The water purifier according to claim 1, wherein the communication flow path is a flow path that connects the outer peripheral space and the internal space.

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