Water filter cartridge

Abstract

To provide a water filter cartridge that is easy to use and does not take long to filter water from the time the water filter is first used. [Solution] A water purifier cartridge that can be attached to a container having a water storage section and a spout from which the liquid stored in the water storage section can be discharged, comprising a main body having a mounting member that can be attached to the spout, and a filtration section capable of filtering the liquid passing through, wherein the filtration section is formed by including sheet-shaped activated carbon with a water flow rate of 0.1 L to 3 L per minute.

Description

Technical Field

[0001] The present invention relates to a cartridge for a water purifier.

Background Art

[0002] In situations where it is difficult to obtain purified water, such as during outdoor activities or disasters, portable simple water purifiers are used. By using a portable simple water purifier, purified water can be used even outdoors.

[0003] The portable simple water purifier is provided with a cartridge for a water purifier, and water can be filtered by passing water through the cartridge for a water purifier. For example, a sheet-like filter medium is used in the cartridge for a water purifier described in Patent Document 1.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, when using a conventional filter medium, it is necessary to immerse the filter medium by shaking the water before filtration, and it may take time from the start of using the water purifier until the water is filtered.

[0006] An object of the present invention is to provide a cartridge for a water purifier that can be used in a water purifier and does not require labor and time such as shaking from the start of using the water purifier until the water is filtered.

Means for Solving the Problems

[0007] In order to solve the above problems, the present invention proposes the following means. The gist of the present invention is as follows. [1] A water purifier cartridge that can be attached to a container having a water storage section and a spout from which the liquid stored in the water storage section can be discharged, comprising a main body having a mounting member that can be attached to the spout, and a filtration section capable of filtering the liquid passing through, wherein the filtration section is formed by including sheet-shaped activated carbon with a water flow rate of 0.1 L or more and 3 L or less per minute. [2] The filtration section is formed by including sheet-shaped activated carbon with a water flow rate of 0.5 L or more and 2 L or less per minute. [1] Water filter cartridge. [3] The filtration section is formed by including sheet-shaped activated carbon with a water flow rate of 1.3 L or more and 1.6 L or less per minute. A water filter cartridge for [1] or [2]. [4] A passage formed in the main body through which gas can flow from the outside of the container toward the water storage section, The passage includes a check valve formed in the passage, which is capable of preventing gas and liquid from leaking out of the water reservoir to the outside of the container through the passage. A water filter cartridge from any of the following options: [1] to [3]. [5] The sheet-shaped activated carbon is formed by comprising at least one of fibrous activated carbon and a fibrous activated carbon sheet. A water filter cartridge from any of the following options: [1] to [4]. [6] The main body is columnar, The filtration section is provided on the outer circumferential surface of the main body. A water filter cartridge from any of the following options: [1] to [5]. [7] The container is a plastic bottle. A water filter cartridge from [1] through [6]. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a water purifier cartridge that is small and can be installed in a PET bottle or the like, without requiring the time and effort of shaking the water from the start of use until the water is filtered.

Brief Description of the Drawings

[0009] [Figure 1] It is a perspective view showing the cartridge for the water purifier, showing the state of being attached to a plastic bottle. [Figure 2] It is a perspective view showing the cartridge for the water purifier. [Figure 3] It is a cross-sectional view taken along the line F3 - F3 of the cartridge for the water purifier shown in FIG. 2. [Figure 4] It is a view showing the state where the passage port of the check valve is closed. [Figure 5] It is a view showing the state where the passage port of the check valve is open. [Figure 6] It is a view showing the flow of water passing through the cartridge for the water purifier. [Figure 7] It is a view showing the flow of air passing through the cartridge for the water purifier.

Modes for Carrying Out the Invention

[0010] Hereinafter, the cartridge for the water purifier according to the embodiment will be described with reference to the drawings. In the following description, the same reference numerals are given to configurations having the same or similar functions. And the overlapping descriptions of those configurations may be omitted.

[0011] [Cartridge 100 for Water Purifier] Referring to FIGS. 1 to 7, the cartridge 100 for the water purifier according to the present embodiment will be described. First, the overall cartridge 100 for the water purifier will be described. However, the cartridge 100 for the water purifier does not necessarily have all the configurations described below, and some configurations may be appropriately omitted.

[0012] FIG. 1 is a perspective view showing the cartridge 100 for the water purifier, showing the state of being attached to the plastic bottle P. The cartridge 100 for the water purifier is a device that can be used as a portable simple water purifier.

[0013] The water purifier cartridge 100 is a device that can be attached to a PET bottle (container) P. As shown in FIG. 1, the PET bottle P has a water storage part P1 and a spout P2 that can discharge the water (liquid) stored in the water storage part P1. The water storage part P1 and the spout P2 are in communication. The spout P2 is formed in a substantially cylindrical shape. Note that the water purifier cartridge 100 only needs to be attachable to a container having a water storage part P1 and a spout P2. The PET bottle P is an example of a container to which the water purifier cartridge 100 can be attached. The water purifier cartridge 100 may be attachable to, for example, a poly tank or a water cylinder.

[0014] FIG. 2 is a perspective view showing the water purifier cartridge 100. FIG. 3 is a cross-sectional view taken along line F3 - F3 of the water purifier cartridge 100 shown in FIG. 2. As shown in FIG. 2, the water purifier cartridge 100 includes a cartridge main body part (main body part) 1 and a filtration part 2.

[0015] In the following description, in the flowing water direction A in which water enters and exits the water purifier cartridge 100, the side where water flows into the water purifier cartridge 100 is defined as the inflow side A1, and the side where water flows out from the water purifier cartridge 100 is defined as the outflow side A2.

[0016] The cartridge main body part 1 is a member that constitutes the main body of the water purifier cartridge 100 and is attached to the PET bottle P. The cartridge main body part 1 is formed in a columnar shape extending in the flowing water direction A. The cartridge main body part 1 has a main body 11 and an attachment member 12 that can be attached to the spout P2 of the PET bottle P.

[0017] The main body 11 is formed in a columnar shape extending in the flowing water direction A. The filtration part 2 is wound around the main body 11. The main body 11 has a filtration part attachment part 13, an outflow part 14, and a main body bottom part 15.

[0018] The filter mounting portion 13 is formed in a columnar shape extending in the direction of water flow A. Specifically, the filter mounting portion 13 is formed in a substantially cylindrical shape. The filter portion 2 is wrapped around the outer circumferential surface 13a of the filter mounting portion 13.

[0019] The outlet section 14 is formed on the outlet side A2 of the filter section mounting section 13. The outlet section 14 is formed in a columnar shape extending in the direction of water flow A. Specifically, the outlet section 14 is formed in a substantially cylindrical shape. The diameter of the outlet section 14 is the same as or larger than the diameter of the filter section mounting section 13. Therefore, when the filter section 2 is wrapped around the filter section mounting section 13, the base end 14t of the outlet section 14 abuts against the tip 2s of the filter section 2.

[0020] The main body bottom portion 15 is formed on the inflow side A1 of the filter mounting portion 13. The main body bottom portion 15 is formed in a columnar shape extending in the direction of water flow A. Specifically, the main body bottom portion 15 is formed in a substantially cylindrical shape. The diameter of the main body bottom portion 15 is the same as or larger than the diameter of the filter mounting portion 13. Therefore, when the filter 2 is wrapped around the filter mounting portion 13, the tip 15s of the main body bottom portion 15 abuts against the base end 2t of the filter 2.

[0021] A passage 3 extending in the direction of water flow A is formed inside the main body 11. The passage 3 is formed to allow gas flowing from the outside of the PET bottle P toward the water storage section P1 of the PET bottle P to pass through, and also to allow water (liquid) filtered by the filtration section 2 to pass toward the outlet section 14. The passage 3 is formed to allow gas to pass from the outlet side A2 toward the inlet side A1. The passage 3 extends from the tip 11s to the base end 11t of the main body 11. The main body 11 is cylindrical because the passage 3 is formed inside it.

[0022] An opening 4 is formed at the tip 11s of the main body 11. The opening 4 is in communication with the passage 3. The opening 4 is an inlet into which gas passing through the passage 3 flows.

[0023] A check valve 5 is formed on the inlet side A1 of passage 3. The check valve 5 is a component that can prevent gas and liquid from leaking out of the water storage portion P1 of the PET bottle P to the outside of the PET bottle P. The check valve 5 is formed to prevent gas and liquid from passing from the inlet side A1 to the outlet side A2. The check valve 5 is a component that allows gas passing through passage 3 to pass from the outside of the PET bottle P to the water storage portion P1 of the PET bottle P. The check valve 5 is formed to allow gas to pass from the outlet side A2 to the inlet side A1.

[0024] Figure 4 shows the check valve 5 with its passage port 51 closed. Figure 5 shows the check valve 5 with its passage port 51 open. The check valve 5 has an openable and closable passage 51. As shown in Figure 4, the passage 51 is formed to close when pressure is applied from the inlet side A1 to the outlet side A2. As shown in Figure 5, the passage 51 is formed to open when pressure is applied from the outlet side A2 to the inlet side A1.

[0025] In the check valve 5, when gas or liquid flows from the inlet side A1 to the outlet side A2, pressure is applied to the check valve 5 from the inlet side A1 to the outlet side A2, causing the passage port 51 to close and preventing gas and liquid from passing through from the inlet side A1 to the outlet side A2.

[0026] In the check valve 5, when gas flows from the outlet side A2 to the inlet side A1, pressure is applied to the check valve 5 from the outlet side A2 to the inlet side A1, causing the passage port 51 to open and allowing gas to pass from the outlet side A2 to the inlet side A1. Although the configuration of the check valve 5 is not limited, umbrella type and duckbill type are preferred due to their miniaturization and manufacturability, with the duckbill type being particularly preferred. The duckbill type has a structure that allows for a larger internal diameter, thereby increasing the amount of gas that can pass through and quickly reducing the pressure difference inside the PET bottle (container) P.

[0027] The mounting member 12 is a member that can be attached to the spout P2 of the PET bottle P. The mounting member 12 is formed to be attachable to the inside of the spout P2 of the PET bottle P.

[0028] The mounting member 12 is provided at the tip 11s of the cartridge body 1. The position where the mounting member 12 is formed is not limited. The mounting member 12 has a substantially cylindrical shape extending in the direction of water flow A. The shape of the mounting member 12 is not limited. The mounting member 12 has a mounting member body 12a and a locking portion 12b.

[0029] The mounting member body 12a forms the main body of the mounting member 12. The mounting member body 12a is a component that is placed inside the spout P2 of the PET bottle P when the mounting member 12 is attached to the PET bottle P. The mounting member body 12a is formed to be elastically deformable. The mounting member body 12a is formed to include, for example, synthetic resin. The mounting member body 12a is formed to be approximately the same shape as the spout P2 when viewed from the direction of water flow A. In this embodiment, the mounting member body 12a has a substantially cylindrical shape that extends in the direction of water flow A. The outer diameter of the mounting member body 12a is approximately equal to the inner diameter of the spout P2. Therefore, the mounting member body 12a is formed to be fitted inside the spout P2. The shape of the mounting member body 12a is not limited. A tapered shape, a packing, sealing tape, etc., may be installed. Considering the dimensional tolerances of the spout P2, a tapered shape is preferable.

[0030] The locking portion 12b is a member that can engage with the spout P2 of the PET bottle P. The locking portion 12b is a member that protrudes from the outer circumference of the mounting member body 12a. The locking portion 12b is formed at the tip of the mounting member body 12a. The locking portion 12b is formed in a substantially circular shape when viewed from the direction of water flow A. The outer diameter of the locking portion 12b is larger than the outer diameter of the spout P2. The shape of the locking portion 12b is not limited. When the locking portion 12b is attached to the PET bottle P, it comes into contact with the spout P2 of the PET bottle P.

[0031] The filtration unit 2 is a component capable of filtering the water passing through it. The filtration unit 2 is provided on the filtration unit mounting portion 13 of the cartridge body 1.

[0032] The filtration section 2 is made of a material that allows for filtration of the water being passed through without immersion.

[0033] The filtration section 2 is formed by including sheet-shaped activated carbon with a water flow rate of 0.1 L to 3 L per minute. Preferably, the filtration section 2 is formed by including sheet-shaped activated carbon with a water flow rate of 0.5 L to 2 L per minute. More preferably, the filtration section is formed by including sheet-shaped activated carbon with a water flow rate of 1.3 L to 1.6 L per minute. In this embodiment, it is formed by including sheet-shaped activated carbon with a water flow rate of 1.3 L to 1.6 L per minute.

[0034] The sheet-shaped activated carbon is formed by comprising at least one of fibrous activated carbon and a fibrous activated carbon sheet.

[0035] The filtration section 2 is provided on the outer circumferential surface 13a of the cartridge body 1. Specifically, the sheet-shaped filtration section 2 is wrapped around the outer circumferential surface 13a of the filtration section mounting section 13. The tip 2s of the filtration section 2 abuts against the base end 14t of the outlet section 14 of the cartridge body 1. The base end 2t of the filtration section 2 abuts against the tip 15s of the bottom section 15 of the cartridge body 1.

[0036] The outer diameter of the filtration section 2 is preferably 15 to 20 mm. If the outer diameter is less than 15 mm, the required capacity will decrease, and the desired removal capacity may not be achieved. Also, if the outer diameter exceeds 20 mm, the outer diameter will be too large, limiting the types of containers that can be used.

[0037] The height of the filtration section 2 is preferably 40 to 60 mm. If the height is less than 40 mm, the required capacity will decrease, and the desired removal capacity may not be achieved. If the height exceeds 60 mm, when the water level in the container decreases, the amount of unused material will increase, leading to increased costs.

[0038] The inner diameter of the filtration section 2 is preferably 7 to 10 mm. If the inner diameter is less than 7 mm, the amount of gas that can pass through will decrease, making it difficult to apply pressure. If the inner diameter exceeds 10 mm, the required volume will decrease, and the desired removal capacity may not be achieved.

[0039] The volume of filtration section 2 is 3.9 to 16.5 ml, the water flow rate is 0.1 to 3 L per minute, and the space velocity (SV) is 363 to 45,860. Generally, if the flow rate in contact with the activated carbon is high, the removal capacity decreases and there is a risk of leakage, so the space velocity (SV) is reduced to 2,000 or less by reducing the flow rate or increasing the activated carbon volume. This invention takes into account situations such as disasters or when purified water is urgently needed, and is configured to be usable even in the high SV range by considering the optimal sheet-type activated carbon, check valve, filter media volume, pressing force, etc.

[0040] The filtration unit 2 may be detachably mounted to the filtration unit mounting section 13. The detachable nature of the filtration unit 2 allows the water purifier cartridge 100 to be reused simply by replacing the filtration unit 2 when its water purification function deteriorates. Because the water purifier cartridge 100 can be reused repeatedly, fewer components are discarded after use, resulting in a lower burden on the natural environment. Furthermore, it is preferable that the filtration unit mounting section 13 has a structure that allows the filtered water from the filtration unit 2 to pass through.

[0041] [The function of water filter cartridge 100] Next, the operation of the water purifier cartridge 100 will be explained with reference to Figures 1, 6, and 7.

[0042] Before attaching the water purifier cartridge 100 to the plastic bottle P, the user fills the water reservoir P1 of the plastic bottle P with water (liquid). Furthermore, by forming a hole in the plastic bottle P that allows water to be added separately from the spout P2, it is possible to add water to the plastic bottle P even after attaching the water purifier cartridge 100 to the plastic bottle P.

[0043] The user prepares to use the water purifier cartridge 100 by attaching it to the plastic bottle P. The water purifier cartridge 100 may be washed before attaching it to the plastic bottle P. The user inserts the water purifier cartridge 100 into the spout P2 of the plastic bottle P from the inlet side A1. If there is water in the reservoir P1 of the plastic bottle P, the water purifier cartridge 100 is attached to the plastic bottle P with the spout P2 facing upwards. Because the outer diameter of the water purifier cartridge 100 is smaller than the inner diameter of the spout P2 of the plastic bottle P, the water purifier cartridge 100 can be inserted through the spout P2. The user attaches the water purifier cartridge 100 to the PET bottle by moving the water purifier cartridge 100 to the inlet side A1 relative to the inlet P2 until the locking portion 12b of the mounting member 12 contacts the inlet P2 of the PET bottle P.

[0044] The user can start filtering the water by filling the plastic bottle P with water, attaching the water filter cartridge 100 to the plastic bottle P, and then pointing the spout P2 of the plastic bottle P downwards and pressing it, as shown in Figure 1.

[0045] In the water purifier cartridge 100 of this embodiment, the filtration section 2 is formed by including sheet-shaped activated carbon with a water flow rate of 0.1 L to 3 L per minute, so that water filtration can be started without shaking or immersing the water in the filtration section 2.

[0046] Figure 6 shows the flow of water passing through the water purifier cartridge 100. With water filled into the PET bottle P and the water purifier cartridge 100 attached, the spout P2 of the PET bottle P is pointed downwards and pressed, causing the water in the reservoir P1 of the PET bottle P to flow from the inlet side A1 to the outlet side A2 of the water purifier cartridge 100, as shown in Figure 6. At this time, the water passes through the filtration section 2. The water is filtered as it passes through the filtration section 2. Since the filtration section 2 is formed with sheet-shaped activated carbon, the water passing through the filtration section 2 is filtered. The water that has passed through the filtration section 2 passes through the passage 3 and is discharged. 0.1L to 3L of water per minute flows through the filtration section 2.

[0047] Figure 7 shows the airflow through the water purifier cartridge 100. When water placed in the reservoir P1 of the PET bottle P is pressure filtered and discharged, the amount of water in the reservoir P1 of the PET bottle P decreases, creating negative pressure. When the amount of water in the reservoir P1 of the PET bottle P decreases and negative pressure is created, air flows in from the outside of the PET bottle P toward the reservoir P1, as shown in Figure 7. When air flows in from the outside of the PET bottle P toward the reservoir P1, the air passes through the water purifier cartridge 100. At this time, the air flows from the outlet side A2 to the inlet side A1 of the water purifier cartridge 100.

[0048] When air flows through the water purifier cartridge 100, the air passes through passage 3. At this time, the air flows into passage 3 from the opening 4 formed on the outlet side A2 of passage 3, flows through passage 3 from the outlet side A2 to the inlet side A1, passes through the check valve 5 formed on the inlet side A1 of passage 3, and flows into the water storage section P1 of the PET bottle P. Since the check valve 5 is formed at the base end 2t of passage 3, it is prevented that the water in the water storage section P1 of the PET bottle P will not flow into passage 3. Therefore, it is possible to prevent water that has not been filtered by the filtration section 2 from leaking out of the PET bottle P. If water that has not been filtered by the filtration section 2 leaks out of the PET bottle P, the water filtered by the filtration section 2 and the water that has not been filtered by the filtration section 2 will mix, and there is a risk that the purity of the water filtered by the water purifier cartridge 100 will decrease. The presence of the check valve 5 prevents the water filtered by the filtration unit 2 from mixing with the water that has not been filtered by the filtration unit 2, thereby maintaining the purity of the water filtered by the water purifier cartridge.

[0049] If gas does not flow into the water reservoir P1 of the PET bottle P, as the amount of water in the PET bottle P decreases, the PET bottle P deforms, making it difficult to press and hindering water flow into the water purifier cartridge 100. However, when using the water purifier cartridge 100, as the amount of water in the PET bottle P decreases and negative pressure is created, gas flows into the water reservoir P1 of the PET bottle P, preventing the water from becoming difficult to flow into the water purifier cartridge 100. Furthermore, when using the water purifier cartridge 100, the structure allows gas to flow easily, making it easier to press and allowing the water in the PET bottle P to flow easily. Therefore, the water can be filtered more quickly.

[0050] When all the water in the plastic bottle P has been filtered and the bottle P is empty, the filtration process is complete. Alternatively, once the desired amount of water has been filtered, you can stop the filtration process midway by turning the spout P2 of the plastic bottle P upwards. By refilling the plastic bottle P with water and reattaching the water filter cartridge 100, you can filter the water repeatedly.

[0051] According to the water purifier cartridge 100 of this embodiment, the filtration section 2 is formed with sheet-shaped activated carbon having a water flow rate of 0.1 L to 3 L per minute, so the water purifier cartridge 100 can be used immediately without shaking or immersion. Because water can be filtered quickly by pressing the PET bottle (container) P, the water purifier cartridge 100 is easy to use.

[0052] According to the water purifier cartridge 100 of this embodiment, the filtration section 2 is formed with sheet-shaped activated carbon having a water flow rate of 0.1 L to 3 L per minute, so water flows easily through the water purifier cartridge 100. Because water can be filtered quickly by pressing, the water purifier cartridge 100 is easy to use.

[0053] According to the water purifier cartridge 100 of this embodiment, a check valve 5 is provided, which allows the PET bottle (container) P to be repeatedly pressed while maintaining the purity of the filtered water, and the water flows easily through the water purifier cartridge 100. As a result, water can be filtered quickly, and the water purifier cartridge 100 is easy to use.

[0054] Although embodiments of the present invention have been described in detail above with reference to the drawings, the specific configuration is not limited to these embodiments, and design modifications and the like are also included within the scope of the gist of the present invention. Furthermore, the components shown in the above-described embodiments and the following modifications can be combined as appropriate. [Explanation of Symbols]

[0055] 100...Water purifier cartridge, 1...Cartridge body (main body), 11...Main body, 12...Mounting member, 12a...Mounting member body, 12b...Locking part, 13...Filtration section mounting part, 13a...Outer surface, 14...Outlet section, 15...Bottom of main body, 2...Filtration section, 3...Passage, 4...Opening, 5...Check valve, 51...Pass port, P...PET bottle, P1...Water storage section, P2...Pouring spout, A...Water flow direction, A1...Inlet side, A2...Outlet side

Claims

1. A water purifier cartridge that can be attached to a container having a water reservoir and a spout from which the liquid stored in the water reservoir can be discharged, A main body having a mounting member that can be attached to the spout, A filtration section capable of filtering the liquid passing through it, Equipped with, The filtration section is formed by including sheet-shaped activated carbon with a water flow rate of 0.1 L or more and 3 L or less per minute. Water filter cartridge.

2. The filtration section is formed by including sheet-shaped activated carbon with a water flow rate of 0.5 L to 2 L per minute. A water purifier cartridge according to claim 1.

3. The filtration section is formed by including sheet-shaped activated carbon with a water flow rate of 1.3 L or more and 1.6 L or less per minute. A water purifier cartridge according to claim 1.

4. A passage is formed in the main body portion, through which gas can flow from the outside of the container toward the water storage portion, The passage includes a check valve formed in the passage, which is capable of preventing gas and liquid from leaking out of the water reservoir to the outside of the container through the passage. A water purifier cartridge according to claim 1.

5. The aforementioned sheet-shaped activated carbon is formed by comprising at least one of fibrous activated carbon and a fibrous activated carbon sheet. A water purifier cartridge according to any one of claims 1 to 4.

6. The main body is columnar, The filtration section is provided on the outer circumferential surface of the main body. A water purifier cartridge according to any one of claims 1 to 4.

7. The aforementioned container is a plastic bottle. A water purifier cartridge according to any one of claims 1 to 4.

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