Filter head module for water purification device

Abstract

To provide a filter head module for accommodating a filter attached to and detached from a water purification device or a water purification device of a water cooler and warmer or a refrigerator.SOLUTION: A filter head module according to the present invention includes: a plurality of filter heads including a filter accommodation part that accommodates a filter part; and a connection part that connects the filter heads. The filter heads each include a housing, a second cap, and a collet. The second cap is connected to the housing and the collet is tightly attached to a fixation part of the connection part.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a water purification device, and more particularly to a filter head module for accommodating a filter that is detachably attached to a water purification device such as a water purifier, a hot and cold water dispenser, or a refrigerator. [Background technology]

[0002] A water purification device is a device that converts raw water such as tap water or groundwater into safe and hygienic drinking water by filtering out various harmful substances that are harmful to the human body and are contained in the raw water using a filter or the like. A representative water purification device is a water purifier, and recently, refrigerators are also equipped with such a water purification device in whole or in part, so that purified water is supplied through the refrigerator or ice can be made using the device. The filter head houses the filter and has a bypass function that prevents leakage of raw water and maintains the flow path on the purified water line as it is. In other words, the raw water and purified water are blocked so that they do not mix with each other. In addition to the bypass, the filter head is required to have many functions such as backflow prevention, water supply blocking, and easy replacement. Various types of filter heads have been proposed in Korean Patent Registration No. 10-1409894, Korean Patent Publication No. 2021-0042456, and Chinese Utility Model Registration No. 213610153.

[0003] Meanwhile, the filter is sometimes removed from the filter head for replacement and inspection. For this reason, there is a demand for the filter to have characteristics such as easy assembly and disassembly, the ability to connect multiple filters, and the prevention of water leakage. However, although a filter head from which the filter can be removed has been proposed in Korean Patent Registration No. 10-1976641, etc., since the parts are assembled together, the parts may come apart during transportation. In addition, when high water pressure is applied, gaps may occur between the parts, causing water leakage. Furthermore, since a gasket is attached to some areas, eccentricity may occur during assembly. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Korean Patent No. 10-1409894 [Patent Document 2] Korean Patent Publication No. 2021-0042456 [Patent Document 3] China Registered Utility Model No. 213610153 Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a filter head module for a water purification device which satisfies the following physical properties: easy assembly and disassembly of filters, prevention of water leakage caused by the combination of multiple filter heads, no separation of parts, prevention of eccentricity, etc. [Means for solving the problem]

[0006] A filter head module for a water purification device according to the present invention includes a plurality of filter heads each having a filter receiving portion for receiving a filter unit, and a connecting portion for connecting the filter heads, wherein the filter heads each include a housing, a second cap, and a collet, the second cap being coupled to the housing, and the collet being in close contact with a fixing portion of the connecting portion.

[0007] In the module of the present invention, the housing and the second cap can be ultrasonically fused. The filter head is located between a water inlet and a water outlet, the water inlet includes an inlet stem and a first cap, and the water outlet includes an outlet stem and a fifth cap. The water inlet stem and the first cap, and the water outlet stem and the fifth cap can be ultrasonically fused.

[0008] In the module of the present invention, the water inlet and the water outlet are inserted into a fastening part of the filter head to be connected. The housing and the fastening part each have a convex part and a concave part, and the convex part and the concave part may be fitted together. The connecting part includes a connecting body, and a third cap and a fourth cap are connected to both sides of the connecting body, and the third and fourth caps are inserted into the fastening part. An indication indicating the direction in which the filter head is connected may be provided on an outer surface of the filter accommodating part. Gaskets are located between the filter head and the water inlet, between the filter head and the connecting part, and between the filter head and the water outlet, and the gaskets may be tube-shaped. Effect of the Invention

[0009] According to the filter head module for a water purification device of the present invention, the filter head connection structure is improved, so that the filter can be easily assembled and disassembled, water leakage caused by the connection of multiple filter heads is prevented, separation of parts does not occur, and eccentricity is prevented, and other physical properties are fully satisfied. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view for explaining a filter head module according to the present invention. [Diagram 2] FIG. 2 is a cross-sectional view taken along line II-II of FIG. [Diagram 3] FIG. 3 is an exploded view of a filter head module according to the present invention. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. [Diagram 5] FIG. 5 is a perspective view showing a gasket according to the present invention. [Figure 6] FIG. 6 shows a modified example of a filter head module according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. The following embodiment may be modified in various ways, and the scope of the present invention is not limited to the following embodiment. The embodiment of the present invention is provided to more completely explain the present invention to those skilled in the art. Meanwhile, terms indicating positions such as upper, lower, front, etc. only relate to those shown in the drawings. In practice, the filter head can be used in any optional direction, and in actual use, the spatial direction changes depending on the direction and rotation of the filter head.

[0012] The present embodiment provides a filter head module for a water purification device that satisfies physical properties such as easy assembly and disassembly of filters, prevention of water leakage due to the combination of multiple filter heads, no separation of parts, and prevention of eccentricity by improving the filter head combination structure. To this end, a filter head module for a water purification device to which a filter head combination structure is applied will be examined in detail, and a process of assembling the filter head using the combination structure to manufacture the module will be described in detail. The filter head module according to the embodiment of the present invention is applied to a water purification device that filters various harmful components that are harmful to the human body and are contained in raw water such as tap water and groundwater, thereby converting the water into safe and hygienic drinking water.

[0013] Fig. 1 is a perspective view for explaining a filter head module 100 according to an embodiment of the present invention, and Fig. 2 is a cross-sectional view taken along line II-II in Fig. 1. However, these drawings are not strictly representative, and there may be components not shown in the drawings for the sake of convenience.

[0014] 1 and 2, the filter head module 100 includes a water inlet unit 10, a filter head 20, a connection unit 40, and a water outlet unit 50. This will be described in detail later. The filter unit 200 is separated from the filter head 20 for replacement and inspection. For this purpose, the filter head 20 has a function of preventing raw water from flowing out to the outside, blocking the flow path of the purified water line, and preventing raw water from flowing into the purified water line. Due to this function, the raw water and the purified water are blocked so that they do not mix with each other. The filter head 20 is required to have many functions such as backflow prevention, water supply blocking, and easy replacement. The filter unit 200 can include a filter 201 such as a sediment filter, a pre-carbon filter, a membrane filter or a reverse osmosis filter (R / O), a post-carbon filter, etc.

[0015] The filter 201 is housed in a filter case 202, and a filter hollow 203 exists inside. The filter 201 is covered by a filter cap 204, and the filter case 202 is covered by a cover 205. The filter cap 204 has a water outlet passage 206 communicating with the filter hollow 203, and a water inlet passage 207 is provided between the filter cap 204 and the cover 205. The cover 205 and the filter head 20 are sealed by an O-ring 208. Raw water IN entering from the water inlet stem 11 flows from the water inlet passage 207 through a filter passage 209 between the filter case 202 and the filter 201.

[0016] Raw water IN in the filter flow passage 209 is converted to intermediate purified water through the filter 201 and accumulated in the filter hollow 203. The intermediate purified water accumulated in the filter hollow 203 is discharged through the water outlet flow passage 206 and the filter head 20. The intermediate purified water passes through the connection part 40 and is discharged as drinking water OUT through the filter part 200 disposed nearby. In the drawings, two filter parts 200 disposed between the water inlet part 10 and the water outlet part 50 are shown as an example, and the intermediate purified water and the drinking water OUT are purified water treated by each filter part 200. Here, the drinking water OUT is safe and hygienic since various harmful components harmful to the human body are filtered out. In some cases, there may be more than two filter parts 200, and even if more than two filter parts 200 are installed, the drinking water OUT flows out from the filter part 200 connected to the water outlet part 50.

[0017] Fig. 3 is an exploded view showing a filter head module 100 according to an embodiment of the present invention, and Fig. 4 is a cross-sectional view taken along line IV-IV in Fig. 3. At this time, the filter unit 200 attached to the filter head module 100 is the same as that described above.

[0018] 3 and 4, the filter head module 100 includes a water inlet section 10, a filter head 20, a connecting section 40, and a water outlet section 50. There are two or more filter heads 20 located between the water inlet section 10 and the water outlet section 50, and the connecting section 40 is located between the filter heads 20 to connect them. The water inlet section 10 provides a flow path for raw water IN and includes an inlet stem 11. The water outlet section 50 provides a flow path for drinking water and includes an outlet stem 51. A water inlet pipe 12 is connected to the inlet stem 11, and a first cap 13 is provided at the end of the water inlet pipe 12. A water outlet pipe 52 is connected to the outlet stem 51, and a fifth cap 53 is provided at the end of the water outlet pipe 52.

[0019] At this time, a portion of the first cap 13 and the fifth cap 53 is exposed to the outside of the water inlet stem 11 and the water outlet stem 51, respectively. The water inlet pipe 12 and the first cap 13 are fixed to the water inlet stem 11, and the water outlet pipe 52 and the fifth cap 53 are fixed to the water outlet stem 51. At this time, the first and fifth caps 13, 53 close the ends of the water inlet stem 11 and the water outlet stem 53, respectively, making it easy to connect them to the hook head 20. For this purpose, the first and fifth caps 13, 53 may be made of a flexible material, such as silicone or Teflon (registered trademark).

[0020] To prevent water leakage, the water inlet stem 11 and the water inlet pipe 12 are molded integrally, and the water outlet stem 51 and the water outlet pipe 52 are also molded integrally. By molding them integrally, no gaps are generated between the water inlet stem 11 and the water inlet pipe 12, and no gaps are generated between the water outlet stem 51 and the water outlet pipe 52. In addition, the water inlet stem 11 and the first cap 13, and the water outlet stem 51 and the fifth cap 53 are firmly joined by, for example, ultrasonic fusion. By ultrasonic fusion, no gaps are generated between the water inlet stem 11 and the first cap 13, and between the water outlet stem 51 and the fifth cap 53, even when high water pressure is applied, and water leakage is blocked.

[0021] The filter head 20 accommodates the filter unit 200 to prevent water leakage, and includes a housing 21 and a filter accommodating unit 31. A second cap 22, a gasket 23, a collet 24, and an O-ring 25 are attached to the inside of the housing 21. At this time, the second cap 22 closes the end of the housing 21 and facilitates attachment to the collet 24. For this purpose, the second cap 22 may be made of a flexible material, such as silicone or Teflon. The collet 24 is inserted into the second cap 22, and the second cap 22 is firmly attached to the housing 21, for example, by fusion with ultrasonic waves. If the second cap 22 and the housing 21 are firmly attached to each other by ultrasonic waves, no gap is generated between the second cap 22 and the housing 21 even when high water pressure is applied, so that water leakage does not occur.

[0022] In some cases, a grip 30 is added between the second cap 22 and the collet 24 to stabilize the connection between the second cap 22 and the collet 24. For convenience of explanation, the grip 30 is shown only in the exploded view and is omitted in other drawings. The gasket 23 and the O-ring 25 seal and prevent water leakage when the water inlet 10 and the connecting part 40 are inserted into the housing 21. Similarly, the gasket 23 and the O-ring 25 seal and prevent water leakage when the water outlet 50 and the connecting part 40 are inserted into the housing 21. The O-ring 25 can be formed by any known method and can be modified in various ways within the scope of the present invention. The details of the gasket 23 will be described later.

[0023] The water inlet part 10 and the water outlet part 50 are connected to the fastening part 26 provided on the filter head 20. Specifically, the first cap 13 and the fifth cap 53 are inserted into the inside of the fastening part 26, respectively, and the ends of the water inlet stem 11 and the water outlet stem 51 are connected to the outside of the fastening part 26. The housing 21 is provided with a protrusion 27, and the fastening part 26 is provided with a recess 28, so that they can be fitted together. When the protrusion 27 and the recess 28 are fitted together, the filter receiving part 31 into which the filter part 200 is inserted is prevented from twisting. In some cases, the housing 21 is provided with a recess 28, and the fastening part 26 is provided with a protrusion 27, so that the above purpose can be achieved. The fastening part 26 may be integrated with the housing 21, or may be joined by a joint 29 as shown in the figure.

[0024] Meanwhile, on the outer surface of the filter housing part 31, there may be an arrow-like mark 32 to indicate the direction in which the filter head 20 is connected by the connection part 40. The mark 32 specifies the direction in which the raw water IN is switched to the drinking water OUT, in other words, the positions of the water inlet part 10 and the water outlet part 50. In the process of assembling the filter head 20, the mark 32 is connected in the same direction.

[0025] The connecting part 40 includes a connecting body 41, a connecting pipe 42, and a fixing part 45. The fixing part 45 fixes the filter head module 100 to the water purification device. In particular, the fixing part 45 can be fixed to the water purification device with a fastening screw using a hole in the fixing part 45. This is merely an example, and various modifications can be made within the scope of the present invention. The third cap 43 and the fourth cap 44 on both sides of the connecting body 41 are firmly connected to each other by, for example, ultrasonic welding. At this time, the third and fourth caps 43 and 44 close one side and the other side of the connecting body 41, respectively, to facilitate connection with the filter head 20. For this purpose, the third and fourth caps 43 and 44 may be made of a flexible material, for example, silicone, Teflon, or the like. If the third and fourth caps 43 and 44 are ultrasonically fused, no gaps are generated between the connecting body 41 and the third cap 43, and between the connecting body 41 and the fourth cap 44, even when high water pressure acts, and water leakage is prevented.

[0026] The collet 24 has a cylindrical band shape, and when the band is in close contact with the fixing part 45, assembly is completed. The collet 24 limits the degree to which the connecting part 40 is inserted into the filter head 20 to a certain extent. The fixing part 35 acts as a stopper that limits the movement of the collet 24. Without the collet 24, the degree to which the connecting part 40 is inserted into the filter head 20 may not be constant. In other words, one side of the connecting part 40 may be inserted lightly into the filter head 20, which may prevent the assembly from being performed properly. If this happens, the assembly cannot be easily completed, and disassembly is difficult due to an imbalance in forces during disassembly. Using the collet 24 makes it easier to assemble and disassemble the connecting part 40 and the filter head 20.

[0027] The third cap 43 and the fourth cap 44 are coupled to the fastening portion 26 provided on the filter head 20. Specifically, the third cap 43 and the fourth cap 44 are inserted into the inside of the fastening portion 26, and the end of the connecting body 41 is coupled to the outside of the fastening portion 26. To this end, the housing 21 is provided with a protrusion 27 and the fastening portion 26 is provided with a recess 28, so that they can be fitted together. When the protrusion 27 and the recess 28 are fitted together, the filter accommodating portion 31 into which the filter portion 200 is inserted is prevented from twisting. In some cases, the housing 21 is provided with a recess 28 and the fastening portion 26 is provided with a protrusion 27, so that the above purpose can be achieved.

[0028] 5 is a perspective view showing a gasket 23 according to an embodiment of the present invention, in which the filter head module 100 is the same as that described above.

[0029] 5, the gasket 23 is located between the water inlet 10 and the filter head 20, between the filter head 20 and the connecting part 40, and between the filter head 20 and the water outlet 50. The gasket 23 includes a gasket body 23a, a gasket pin 23b, and a flow hole 23c. The gasket 23 is in a tube shape and surrounds the water inlet stem 11, the connecting body 41, and the water outlet stem 51. The gasket 23 surrounds the water inlet stem 11, the connecting body 41, and the water outlet stem 51 in a tube shape, which can prevent eccentricity from occurring when the water inlet 10, the connecting part 40, and the water outlet 50 are assembled into the filter head 20. If the gasket 23 were ring-shaped and surrounded the inlet stem 11, the connecting body 41, and the outlet stem 51 as in the conventional art, eccentricity would occur when the inlet part 10, the connecting part 40, and the outlet part 50 were assembled into the filter head 20.

[0030] 6 is a diagram showing a modified example 100a of a filter head module according to an embodiment of the present invention, in which the filter head module 100 is shown in FIGS.

[0031] 6, in the modified example 100a, N (N is a natural number) filter heads [20(1), 20(2), 20(3), ..., 20(N)] are connected by N-1 connecting parts [40(1), 40(2), ..., 40(N-1)]. Specifically, the modified example 100a is completed when the collets 24 of the filter heads [20(1), 20(2), 20(3), ..., 20(N)] are assembled so as to be in close contact with the fixing parts 45 of the connecting parts [40(1), 40(2), ..., 40(N-1)]. In this way, the modified example 100a including N (N is a natural number) filter heads [20(1), 20(2), 20(3), ..., 20(N)] can be easily completed by bringing the collets 24 into close contact with the fixing parts 45. In the process of assembling the N filter heads 20, they are joined together with the marks 32 pointing in the same direction.

[0032] Although the present invention has been described in detail with reference to preferred embodiments thereof, the present invention is not limited to the above embodiments and various modifications can be made by those skilled in the art within the scope of the technical concept of the present invention. [Explanation of symbols]

[0033] 100 Filter Head Module 100a filter head module 200 Filter section 201 Filters 10. Water entry section 11 Water entry stem 12 Water Intake Pipe 13 1st to 5th Caps 22 1st to 5th Caps 43 1st to 5th Caps 44 1st to 5th Caps 53 1st to 5th Caps 20 Filter Head 21 Case 23 Gasket 24 Colette 25 O-ring 26 Fastening Part 27 Convex 28 Recess 29 Joint 30 Grip 31 Filter housing 32 signs 40 Connection part 41 Connected body 42 Connecting pipe 45 Fixed part 50 Izumi Department 51 Izumi stem 52 Outlet pipe

Claims

1. A plurality of filter heads each having a filter housing portion in which a filter portion is housed; A connection part for connecting the filter head; Including, The filter head module for a water purification apparatus, characterized in that the filter head includes a housing, a second cap, and a collet, the second cap being coupled to the housing, and the collet being in close contact with a fixing portion of the connecting portion.

2. 2. The filter head module for a water purification apparatus according to claim 1, wherein the housing and the second cap are fused together by ultrasonic waves.

3. 2. The filter head module for a water purification device according to claim 1, wherein the filter head is located between a water inlet and a water outlet, the water inlet including an inlet stem and a first cap, and the water outlet including an outlet stem and a fifth cap.

4. 4. The filter head module for a water purification apparatus according to claim 3, wherein the inlet stem and the first cap, and the outlet stem and the fifth cap are fused by ultrasonic waves.

5. 2. The filter head module for a water purifier according to claim 1, wherein the water inlet and the water outlet are inserted into and connected to a fastening portion of the filter head.

6. The filter head module for a water purification device according to claim 5 , wherein the housing and the fastening portion each have a protrusion and a recess, and the protrusion and the recess are fitted together.

7. 6. The filter head module for a water purification apparatus according to claim 5, wherein the connecting portion includes a connecting body, a third cap and a fourth cap are coupled to both sides of the connecting body, and the third and fourth caps are inserted into the fastening portion.

8. The filter head module for a water purification apparatus according to claim 1, wherein an indication is provided on an outer surface of the filter receiving part, the indication indicating a direction in which the filter head is connected.

9. 4. The filter head module for a water purification apparatus according to claim 3, wherein gaskets are positioned between the filter head and the water inlet, between the filter head and the connecting portion, and between the filter head and the water outlet, and the gaskets are tube-shaped.

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