Portable type water purifier

Abstract

To provide a portable type water purifier capable of being easily mounted to an existing water treatment system, having no restrictions on materials used for peripheral members, and ensuring high water purification effectiveness.SOLUTION: A portable type water purifier has: a housing including a treated water inlet and a treated water outlet; a UV light source arranged inside the housing and capable of irradiating treated water flowing into the housing from the treated water inlet with UV light; and transferring means capable of transferring the treated water from the treated water inlet to the treated water outlet.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a portable water purification device. [Background technology]

[0002] Conventionally, water purification devices are known that purify water by inactivating bacteria in the water by irradiating the water with ultraviolet rays. Patent Document 1 proposes a water treatment device that includes an ultraviolet irradiating unit that irradiates the water with ultraviolet rays and an ultrasonic generator that removes substances attached to the ultraviolet irradiating unit.

[0003] Patent document 2 proposes a portable water purification device that includes an ultraviolet (UV) light source that irradiates ultraviolet light onto a fluid contained in an amplification chamber, and further includes an amplification chamber having a highly reflective inner surface, which redirects the UV light that reaches the highly reflective inner surface so that it passes through the fluid in all directions, thereby purifying the fluid. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2017-205687 A [Patent Document 2] Special Publication No. 2016-530995 Summary of the Invention [Problem to be solved by the invention]

[0005] The water treatment device of Patent Document 1 is inserted into the piping of an existing water treatment system and purifies the water passing through it, and therefore piping modification is required for each installation site in order to install the water treatment device. Furthermore, since water is passed through the water treatment device using the internal pressure of the attached piping, the amount of water passing through decreases due to an increase in pressure loss caused by inserting the device. In addition, there is a concern that ultraviolet rays leaking from the device may cause deterioration of the connecting piping, so there are restrictions on the materials that can be used, such as stainless steel for the connecting piping. In addition, in order to achieve the target water purification effect, the water to be treated needs to have a certain level of water quality, and for this purpose, it is necessary to remove foreign matter that blocks ultraviolet rays and improve the transmittance of the water to be treated.

[0006] The portable water purification device in Reference 2 is a batch type, and requires the use of an amplification chamber having a highly reflective inner surface to improve the water purification effect.

[0007] As described above, when purifying water to be treated by ultraviolet irradiation, conventional methods still have issues in terms of ease of installation, limitations on the materials used in peripheral components, improving the water purification effect, etc. The present disclosure provides a portable water treatment device that can be easily installed in an existing water treatment system, has no limitations on the materials used in peripheral components, and ensures a high water purification effect. [Means for solving the problem]

[0008] [1] A housing having a water inlet and a water outlet; an ultraviolet light source disposed inside the housing and capable of irradiating ultraviolet light onto the water to be treated that flows in through the water to be treated inlet; and A portable water purification device having a transfer means capable of transferring the water to be treated from the water to be treated inlet to the water to be treated outlet, The housing is a portable water purification device capable of blocking ultraviolet light irradiated from the ultraviolet light source. [2] The transport means has a drive unit, and when the portable water purification device is installed in a water storage facility, the drive unit The portable water purification device described in [1], wherein the movable part is located above the water surface of the water to be treated. [3] A portable water purification device as described in [1] or [2], wherein the width direction length of the housing is 600 mm or less. [4] The portable water purification device described in any one of [1] to [3], wherein the housing is extendable and contractible in the longitudinal direction. [5] A portable water purification device described in any of [1] to [4], further comprising a water immersion detection sensor arranged inside the housing and positioned above the ultraviolet light source when the portable water purification device is installed in a water storage facility. [6] The portable water purification device according to any one of [1] to [5], wherein the number of the ultraviolet light sources is two or more, and the distance between the ultraviolet light sources is 0.5 cm to 60 cm. [7] A portable water purification device described in any of [1] to [6], further comprising a visible light source disposed inside the housing, the housing further comprising an inspection window through which the visible light source can be viewed from the outside. Effect of the Invention

[0009] The present disclosure makes it possible to provide a portable water treatment device that can be easily installed in an existing water treatment system, has no restrictions on the materials used for peripheral components, and ensures a high water purification effect. [Brief description of the drawings]

[0010] [Figure 1] FIG. 2 is a schematic side cross-sectional view of the portable water purification device. [Diagram 2] FIG. 2 is a schematic side cross-sectional view of a portable water purifier in which the untreated water inlet and the untreated water outlet have a bent shape (L-shape). [Diagram 3] FIG. 2 is a schematic side cross-sectional view of a portable water purification device showing the distance d between multiple ultraviolet light sources. [Figure 4] FIG. 13 is a schematic side cross-sectional view of the portable water purification device, showing a reflector plate placed between multiple ultraviolet light sources. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The description of a numerical range such as "XX to YY" or "XX to YY" means a numerical range including the lower and upper limits, unless otherwise specified. When a numerical range is described in stages, the upper and lower limits of each numerical range can be arbitrarily combined.

[0012] One form of the present invention is a portable water purification device that has a housing with a treated water inlet and a treated water outlet, an ultraviolet light source arranged inside the housing and capable of irradiating ultraviolet light onto the treated water flowing in from the treated water inlet, and a transport means capable of transporting the treated water from the treated water inlet to the treated water outlet, and the housing is a portable water purification device that is capable of blocking ultraviolet light irradiated from the ultraviolet light source. As described above, the portable water purification device of this embodiment has a specification in which the means for transferring the water to be treated and the ultraviolet light source, which is the water purification means, are integrated, so that it can be easily installed in an existing water tank or the like without additional construction. Furthermore, since it can be easily transported, the water to be treated stored in the water tank can be purified and then installed in another water tank. In addition, a portable water purification device with a high water purification effect has been realized without any restrictions on the materials used for the peripheral members. The peripheral members are members located outside the housing of the portable water purification device. In other words, the peripheral members are members located in a position where the ultraviolet light emitted from the ultraviolet light source cannot directly reach because the ultraviolet light is blocked by the housing. In addition to the members provided in the portable water purification device located outside the housing, the members include the members of the water tank. For example, the wall and bottom of the water tank, the piping connected to the water tank, the measuring device, etc. can be mentioned. A preferred embodiment of the portable water purifier of this embodiment will be described below.

[0013] The portable water purification device of this embodiment is a device that can purify water-borne infectious diseases caused by pollutants contained in industrial wastewater, rainwater, tap water, etc. This water purification device uses ultraviolet light to inactivate and purify viruses and bacteria that may cause contamination of the water environment to which the water is discharged, and can be used in a variety of applications, including tap water for drinking water and hand-washing, greywater for toilet use and stored rainwater, and sewerage for septic tank treated water discharged from the septic tank.

[0014] The portable water purification device of this embodiment can purify the water to be treated by inserting the device directly from above the water storage facility, typically into an upward opening of the water storage facility such as a water storage tank that stores the water to be treated, and irradiating the water to be treated passing through the inside of the device with ultraviolet light while the device is immersed to a predetermined depth. When the portable water purification device is inserted into the water storage facility, the side that first enters the water storage facility is the lower side of the portable water purification device, and the opposite side is the upper side.

[0015] A preferred embodiment of the overall configuration of the portable water purification device of this embodiment will be described with reference to the drawings. Fig. 1 is a schematic side cross-sectional view showing an example of a portable water purification device of this embodiment. The portable water purification device 100 shown in Fig. 1 has a housing 1, an ultraviolet light source 2, an impeller 3 which is a means for transporting water to be treated, and a support member 4.

[0016] The housing 1 may be any housing that irradiates ultraviolet light on the water to be treated by flowing the water inside the housing, and purifies the water, and that can block ultraviolet light. The material constituting the housing 1 preferably includes at least stainless steel, but is not particularly limited as long as it includes at least a material that can block ultraviolet light and is not deteriorated by ultraviolet light. By blocking ultraviolet light with the housing 1, the amount of ultraviolet light that leaks from the housing 1 and can reach the surrounding components can be minimized, thereby suppressing deterioration of the surrounding components of the portable water purification device of this embodiment due to ultraviolet light, and the surrounding components can be selected without any restrictions on the materials used.

[0017] The housing 1 is typically cylindrical, but may be rectangular, such as a column, or polygonal, such as a triangular column. Depending on the location of use, the housing 1 may be an L-shaped or other bent shape, or a C-shaped or other curved shape. The housing 1 includes a water inlet 11, a water outlet 12, a water passage 13, a strainer 14, a wall 15a, a wall 15b, a wall 15c, a power source 16, wiring 16a, a dividing section 17, a first part 17a, a second part 17b, a visible light source 18, an inspection window 19, an ultraviolet light source 2, a water intrusion detection sensor 21, and a receiving section 22.

[0018] The housing 1 allows the water to be treated to flow in through the water inlet 11 at one end, pass through a water passage 13 inside the housing 1, and flow out through the water outlet 12 at the other end. The housing 1 has the water inlet 11 to be treated and the water outlet 12 to be treated, one of which is the inlet for the water to be treated and the other the outlet for the water to be treated, although these may be reversed.

[0019] The shapes of the treated water inlet 11 and the treated water outlet 12 are not particularly limited, but are preferably shapes that can minimize the amount of ultraviolet light that leaks from the housing and can reach surrounding components. For example, the shapes may be an entirely bent shape such as an L-shape as shown in Figure 2, or an entirely curved shape such as a C-shape.

[0020] The upper limit of the diameter of the water inlet 11 to be treated and the water outlet 12 to be treated is preferably 30 cm or less, more preferably 10 cm or less, and further preferably 5 cm or less. The lower limit of the diameter of the water inlet 11 to be treated and the water outlet 12 to be treated is not particularly limited, but is usually 0.5 cm or more. By setting the diameters of the untreated water inlet 11 and the untreated water outlet 12 within the above ranges, the amount of ultraviolet light that leaks from the housing and can reach surrounding components can be minimized.

[0021] The upper limit of the distance from the water inlet 11 or the water outlet 12 to the ultraviolet light source 2 described later may be 250 cm or less, 100 cm or less, or 30 cm or less. The lower limit of the distance from the water inlet 11 or the water outlet 12 to the ultraviolet light source 2 described later is not particularly limited, but is usually 1 cm or more.

[0022] The water passage 13 is disposed inside the housing 1, and is connected to the water inlet 11 and the water outlet 12. The width of the water passage 13 may be uniform from the inlet side to the outlet side, but may be partially narrowed or widened according to the range of ultraviolet light irradiation from the ultraviolet light source 2 and the treatment speed of the water to be treated. By partially narrowing the width of the water passage 13, ultraviolet light can be efficiently irradiated to the water to be treated.

[0023] The strainer 14 is installed at least one of the water inlet 11 and the water outlet 12 to prevent damage or breakage of the ultraviolet light source 2 caused by foreign matter entering the housing 1, and also suppresses a decrease in ultraviolet irradiation efficiency caused by a decrease in the transmittance of the water to be treated. Here, the strainer is a mesh-like device installed to remove foreign matter from the fluid, and a filter or the like can be used. From the viewpoint of preventing foreign matter from entering the housing 1, the strainer 14 is preferably installed at the untreated water inlet 11. When the portable water purifier of this embodiment is provided in a water storage facility, if the untreated water inlet 11 equipped with the strainer 14 is located below the untreated water outlet 12, the untreated water in the housing 1 flows out from below when the portable water purifier is lifted from the water storage facility, and foreign matter captured on the surface of the strainer 14 can be easily discharged by simple backflow washing. If the untreated water inlet 11 equipped with the strainer 14 is located above the untreated water outlet 12, the untreated water can be discharged from above to discharge the foreign matter captured on the strainer surface.

[0024] When the portable water purification device of this embodiment is installed in a water storage facility, the positions of the treated water inlet 11 and the treated water outlet 12 are not particularly limited, but it is preferable that the treated water inlet 11 is located lower than the treated water outlet 12. By positioning the untreated water inlet 11 below the untreated water outlet 12, even when the water level of the untreated water in the water storage facility is low, the untreated water can flow into the housing 1. In addition, by positioning the untreated water inlet 11 below the untreated water outlet 12, when the untreated water inlet 11 is provided with a strainer 14, foreign matter can be easily discharged by simple backwashing in which the portable water purifier is pulled up from the water storage facility.

[0025] When the portable water purification device of this embodiment is provided in a water storage facility, the wall surface of the housing typically includes wall surface 15a parallel to the flow direction of the water to be treated, and wall surface 15b located at the top and wall surface 15c located at the bottom among the wall surfaces perpendicular to the flow direction of the water to be treated. Here, the shape of the wall surface may be flat, curved, or may include both flat and curved surfaces. The treated water inlet 11 and the treated water outlet 12 are preferably installed on at least one of the wall surfaces 15a and 15c, and the power source 16, the receiver 22 of the submersion detection sensor, and the drive unit 31 of the transport means for the treated water, which will be described later, are preferably installed on the outside of the wall surface 15b. By installing the treated water inlet 11, the treated water outlet 12, the power source 16, the receiver 22 of the submersion detection sensor, and the drive unit 31 of the transport means for the treated water as described above, maintenance of the device is facilitated.

[0026] The power source 16 is a power source capable of supplying electricity to the ultraviolet light source 2 through the wiring 16a, and the power source capable of supplying electricity to the ultraviolet light source 2 may also function as a power source capable of supplying electricity to a drive unit 31 of a means for transferring water to be treated, which will be described later. The power source 16 may be a storage battery that stores electric energy, or may be a facility capable of introducing electricity from an external power source through wiring or the like. It is preferable that 6 is provided with a control unit capable of controlling the ON / OFF of the power supply to the ultraviolet light source 2, and further, if the power source 16 is a power source capable of supplying power to the drive unit 31 of the transfer means for the water to be treated, it is preferable that it further includes a control unit capable of controlling the ON / OFF of the power supply to the drive unit 31.

[0027] The dividing portion 17 is installed on the peripheral portion of the wall surface 15, and the housing 1 can be divided into a first part 17a and a second part 17b located below the first part 17a by the dividing portion 17. Since the housing 1 is composed of a plurality of parts that can be divided, cleaning of the surface of the ultraviolet light source 2 and the inner surface of the water passage 13 becomes easy.

[0028] It is preferable that the power source 16 is installed in the first part 17a, and the ultraviolet light source 2 is installed in the second part 17b. By installing them as described above, when the housing 1 is separated for cleaning or the like, it is necessary to disconnect the wiring 16a and cut off the power supply to the ultraviolet light source 2, and ultraviolet light is not accidentally emitted from the ultraviolet light source 2 when the housing 1 is separated, thereby ensuring safety.

[0029] The dividing portion 17 may have any structure as long as it can divide the housing 1 and can connect the first part 17a and the second part 17b, and may have, for example, a screw structure or a structure having a locking mechanism. In addition, a plurality of dividing portions 17 may be provided on the peripheral portion of the wall surface 15.

[0030] Visible light source 18 is disposed inside housing 1, and is a visible light source that lights up simultaneously when ultraviolet light is emitted from ultraviolet light source 2. Inspection window 19 is provided on wall surface 15 of housing 1, and allows visible light source 18 to be viewed from the outside. Providing visible light source 18 and inspection window 19 allows ultraviolet light irradiation to be visually confirmed from the outside.

[0031] The upper limit of the width direction length of the housing 1 is preferably 600 mm or less, more preferably 450 mm or less, and even more preferably 300 mm or less. The lower limit of the short side length of the housing 1 is not particularly limited, but is usually 5 mm or more. When the width direction length of the housing 1 is within the above range, ultraviolet rays can be efficiently irradiated to the water to be treated. Here, the width direction is a direction approximately perpendicular to the flow direction of the water to be treated.

[0032] The housing 1 may be extendable in the longitudinal direction. By being extendable, the portable water purification device of this embodiment can be applied to water to be treated at various depths. The method of extension is not particularly limited, but for example, an additional part may be connected between the first part 17a and the second part 17b separated by the separation portion 17. Here, the longitudinal direction is approximately coaxial with the flow direction of the water to be treated.

[0033] The ultraviolet light source 2 is disposed inside the housing 1, and may be installed on the wall surface of the housing 1, or may be fixed at a location away from the wall surface of the housing 1. The ultraviolet light source is capable of irradiating ultraviolet light to the water to be treated flowing in from the water to be treated inlet 11, and preferably has waterproof performance. The type of the ultraviolet light source is not particularly limited, and may be, for example, an ultraviolet LED or an ultraviolet lamp. Furthermore, the shape of the ultraviolet light source is not particularly limited. The ultraviolet light source 2 may be installed so that the irradiation direction of ultraviolet light is approximately perpendicular to the flow direction of the water to be treated as shown in FIG. 1, or may be installed so that the irradiation direction of ultraviolet light is approximately coaxial with the flow direction of the water to be treated.

[0034] There may be one or more ultraviolet light sources 2 disposed inside the housing 1. When there are multiple ultraviolet light sources 2, the irradiation directions of the multiple ultraviolet rays may be the same or may be opposite directions as shown in FIG.

[0035] The water submersion detection sensor 21 is disposed inside the housing 1, and is disposed above the ultraviolet light source 2 when the portable water purification device of this embodiment is provided in a water storage facility. When there are multiple ultraviolet light sources 2, the water submersion sensor 21 may be disposed above the ultraviolet light source 2 disposed at the top, or the same number of water submersion sensors 21 may be disposed above the multiple ultraviolet light sources 2. When the water submersion detection sensor 21 detects water submersion, ultraviolet light is irradiated from the ultraviolet light source 2. By providing the water submersion detection sensor 21, it is possible to prevent the ultraviolet light source from failing to receive ultraviolet light when the water to be treated has not yet reached the level above the ultraviolet light source 2.

[0036] If the housing 1 is equipped with a water submersion detection sensor 21, it further includes a receiver 22 that receives detection information from the water submersion detection sensor 21. When the water submersion detection sensor 21 does not detect water submersion, the control unit of the power source 16 has a function of turning off the power supply to the ultraviolet light source 2 based on the detection information received by the receiver 22. It is preferable that the detection information from the water submersion detection sensor 21 can be confirmed from outside. The means is not particularly limited, but the housing 1 may further include a display unit that notifies the user of the detection information received by the receiver 22, and may further include an alarm function. Furthermore, when the flood detection sensor 21 does not detect flooding, the control unit of the power source 16 may have a function of controlling a drive unit 31 of a means for transferring the water to be treated, which will be described later, based on the detection information received by the receiving unit 22. For example, the control unit of the power source 16 may control the drive unit 31 to promote the transfer of the water to be treated.

[0037] When there are multiple ultraviolet light sources 2, the upper limit of the distance d between the multiple ultraviolet light sources shown in Fig. 3 is preferably 60 cm or less, more preferably 45 cm or less, and even more preferably 30 cm or less. The lower limit of the distance d between the multiple ultraviolet light sources is preferably 0.5 cm or more, more preferably 1 cm or more, and even more preferably 2 cm or more. By setting the distance d between the multiple ultraviolet light sources within the above range, ultraviolet rays can be efficiently irradiated onto the water to be treated, and damage to one ultraviolet light source by ultraviolet rays irradiated from the other ultraviolet light source can be prevented.

[0038] When there are multiple ultraviolet light sources 2, it is preferable to install a reflector 23 between the multiple ultraviolet light sources as shown in FIG. 4. By installing the reflector, it is possible to prevent damage to one ultraviolet light source caused by ultraviolet light irradiated from the other ultraviolet light source. As shown in FIG. 4, the reflector may be installed parallel to the flow direction of the water to be treated or perpendicular to the flow direction of the water to be treated. However, since it is preferable not to obstruct the flow of the water to be treated, it is preferable to install the reflector parallel to the flow direction of the water to be treated. The reflector may be flat or curved. The shape of the reflector is not particularly limited, and may be a shape that can engage or fit with the shape of the housing 1 or the shape that can engage or fit with the shape of the ultraviolet light source 2.

[0039] The impeller 3, which is a means for transporting the water to be treated, is a transport means capable of transporting the water to be treated from the water to be treated inlet 11 to the water to be treated outlet 12. Since the portable water purification device of this embodiment has a means for transporting the water to be treated, it can be easily installed in an existing water treatment system. Furthermore, since the water to be treated can be purified by circulating within the device, a high water purification effect can be ensured.

[0040] The impeller 3, which is a means for transporting the water to be treated, has a drive unit 31. When the portable water purifier of this embodiment is provided in a water storage facility, the power source 16, the receiver 22 of the water intrusion detection sensor, and the drive unit 31 are preferably located above the water surface of the water to be treated. By having the drive unit 31 located above the water surface of the water to be treated, maintenance of the device is made easier.

[0041] The means for transporting the water to be treated is not particularly limited, and may be, for example, an impeller, suction, siphon, or air pump. A lid can be used.

[0042] The support member 4 is provided above the portable water purification device 100, supports the portable water purification device 100, and can engage or fit with other members. Since the portable water purification device 100 has the support member 4, the portable water purification device of this embodiment can be applied even when, for example, the opening of the water storage facility is large. [Explanation of symbols]

[0043] 100...portable water purification device, 1...housing, 11...treated water inlet, 12...treated water outlet, 13...water passage, 14...strainer, 15a...wall surface, 15b...wall surface, 15c...wall surface, 16...power source, 16a...wiring, 17...dividing portion, 17a...first part, 17b...second part, 18...visible light source, 19...inspection window, 2...ultraviolet light source, 21...water immersion detection sensor, 22...receiving portion, 23...reflecting plate, 3...impeller, 31...driving portion, 4...support member

Claims

1. A housing having a treated water inlet and a treated water outlet; an ultraviolet light source disposed inside the housing and capable of irradiating ultraviolet light onto the water to be treated that flows in through the water to be treated inlet; and A portable water purification device having a transfer means capable of transferring the water to be treated from the water to be treated inlet to the water to be treated outlet, The housing is a portable water purification device capable of blocking ultraviolet light irradiated from the ultraviolet light source.

2. The portable water purification device according to claim 1 , wherein the transport means has a drive unit, and when the portable water purification device is provided in a water storage facility, the drive unit is located above the water level of the water to be treated.

3. The portable water purification device according to claim 1 or 2, wherein the housing has a widthwise length of 600 mm or less.

4. The portable water purification device according to any one of claims 1 to 3, wherein the housing is extendable and contractible in a longitudinal direction.

5. The portable water purification device according to any one of claims 1 to 4, further comprising a water immersion detection sensor arranged inside the housing and arranged above the ultraviolet light source when the portable water purification device is provided in a water storage facility.

6. The portable water purification device according to any one of claims 1 to 5, wherein the number of the ultraviolet light sources is two or more, and the distance between the ultraviolet light sources is 0.5 cm to 60 cm.

7. The portable water purification device according to any one of claims 1 to 6, further comprising a visible light source disposed inside the housing, the housing further comprising an inspection window through which the visible light source can be viewed from the outside.

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