Filter assembly for securing flow path

Abstract

The disclosed content relates to a filter assembly that facilitates securing a flow path, thereby preventing blockage of the flow path by burrs even if burrs are generated during the rotational welding of the filter housing and the cap, so as to reduce the product defect rate and simultaneously improve productivity, by ensuring a flow path regardless of the rotational welding area of ​​the filter housing and the cap. The disclosed content comprises: a filter housing formed in a tubular shape with an open top; a cap having a lower end coupled to the top of the filter housing and a filter head coupling member provided at the top; a filter inserted into the interior of the filter housing, forming an inlet flow path between the outer surface and the inner surface of the filter housing, and having a drainage flow path vertically formed through the center; a lower end cap coupled to the bottom of the filter and closing the bottom of the filter; and an upper end cap coupled to the top of the filter, having a flange portion protruding outwardly on the edge side with an inlet hole formed through it that communicates with the inlet flow path. An embodiment of a filter assembly that facilitates securing a flow path is presented, comprising: a discharge pipe formed protruding from the upper center of the upper end cap, having a connecting drainage channel formed inside that communicates vertically with the drainage channel, and having its upper end watertightly coupled to the inner circumference of the filter head coupling member of the cap; and an inlet pipe having its lower end connected to the inner wall of the discharge pipe, concentrically arranged and supported within the discharge pipe, having a bent inlet channel formed inside, and having its upper end watertightly coupled to the filter head.

Description

Technology Field

[0001] The disclosed content relates to a filter assembly that purifies raw water and is replaceably provided within various devices such as water purifiers, water heaters, water softeners, and bidets. Background Technology

[0002] Unless otherwise indicated in this specification, the contents described in this section are not prior art for the claims of this application, and are not to be recognized as prior art simply because they are included in this section.

[0004] As water pollution caused by industrial development has become severe and distrust of tap water has increased, people are recently using water purified by water purifiers or commercially available bottled water for drinking.

[0005] These water purifiers are designed to remove heavy metals and other harmful substances contained in raw water, such as tap water, by passing it through filters installed in internal channels to processes such as sedimentation, filtration, and sterilization. These purifiers are widely used not only for general household and commercial use but also for cleaning high-tech scientific industries and ultra-precision electronic components, as well as for medical applications.

[0006] These filters are replaceably provided in various devices such as water purifiers, water heaters, water softeners, and bidets, and are formed in the form of a filter assembly in which a filter cartridge is embedded within a filter housing that is closed by a filter cap.

[0007] As an example of such a filter assembly, Korean Patent Publication No. 10-2017-0083315 (published July 18, 2017) describes a water purifier filter assembly comprising a filter cartridge having an inlet and a drain port for housing a filter, and a bracket rotatably installed inside the water purifier to allow the filter cartridge to be attached and detached, wherein the filter cartridge comprises: a filter housing housing the filter; and a filter cap mounted on the upper part of the filter housing and having a mounting flange extending radially on its outer periphery. A water purifier filter assembly is disclosed, comprising an inlet pipe through which raw water flows in, an outlet pipe through which purified water filtered through the filter flows out, and a discharge pipe for discharging domestic water that has not been filtered through the filter to the outside, and a head cap coupled to the upper part of the filter cap and fixedly installed on the bracket, wherein a fixed pipe with a diameter larger than the diameter of the outlet pipe is installed on the outer side of the outlet pipe to form a discharge path between the outlet pipe and the fixed pipe, wherein the fixed pipe is connected to the discharge pipe so that domestic water inside the discharge path flows into the discharge pipe, and wherein one end of the discharge pipe extends to the outside by penetrating the bracket and the other end is coupled to the fixed pipe so as to communicate with the discharge path, such that the discharge pipe and the fixed pipe maintain a fixed state regardless of the rotation of the outlet pipe due to the rotation of the bracket.

[0008] In addition, Korean Patent Publication No. 10-2014-0025205 (published on March 4, 2014) discloses a filter for a water purifier comprising: a filter assembly having an outlet through which purified water flows out via the filter member, a housing with an open top for housing the filter assembly; and a cap covering the open top of the housing and having an inlet / outlet that secures a passage for the outflow and inflow of raw water, wherein the outlet of the filter assembly is located in the center of the inlet / outlet, thereby forming an inflow path through which raw water flows out to the outside of the outlet, and wherein the filter assembly comprises a filter for purifying raw water, a filter coupling member having an outlet through which water purified by the filter flows out, and a positioning member for positioning the filter coupling member at a required specific height point.

[0009] In addition, Korean Patent Publication No. 10-2012-0011407 (published on February 8, 2012) describes a filter for filtering raw water; a housing for accommodating the filter; a cap coupled to the housing; a connector coupled to the filter and the cap, having an inlet for raw water to flow in, an outlet for purified water filtered by the filter to flow out, and an outlet for concentrated water to be discharged; and a first fixing member for fixing the connector to the filter. The filter comprises a second fixing member for fixing the connector to the filter, wherein the filter comprises a filter member for filtering raw water and a coupling member located above the filter member and coupled to the connector, wherein the coupling member has a first passage for allowing raw water flowing in through the inlet to enter the upper part of the filter member and a second passage for moving purified water, filtered from the raw water entering the filter member through the first passage, to the outlet, and a third passage for moving concentrated water to the discharge passage is maintained by the gap between the outer surface of the filter and the inner surface of the housing and the gap between the inner surface of the cap and the outer surface of the coupling member, wherein the first fixing member and the second fixing member are formed in a cylindrical shape, and the inner diameter of the second fixing member is smaller than the inner diameter of the first fixing member so that the second fixing member is inserted into the first fixing member. An assembly is disclosed.

[0010] However, in the case of the conventional filter assembly described above, since a part of the flow path is formed adjacent to the rotational welding area of ​​the filter housing and the cap, the flow path can be blocked by burrs generated during the rotational welding of the filter housing and the cap, which leads to an increased product defect rate and a decrease in productivity. Prior art literature

[0011] 1. Korean Patent Publication No. 10-2017-0083315 (Published July 18, 2017) 2. Korean Patent Publication No. 10-2014-0025205 (Published March 4, 2014) 3. Korean Patent Publication No. 10-2012-0011407 (Published February 8, 2012) The problem to be solved

[0012] We aim to provide a filter assembly that facilitates the securing of a flow path, thereby preventing blockage of the flow path by burrs even if they occur during the rotational welding of the filter housing and cap, regardless of the rotational welding area of ​​the filter housing and cap, which reduces the product defect rate and improves productivity.

[0013] Furthermore, it is evident that the technical challenges are not limited to those described above, and that other technical challenges may be derived from the following description. means of solving the problem

[0014] The disclosed content comprises: a filter housing formed in a tubular shape with an open top; a cap having a lower end coupled to the top of the filter housing and a filter head coupling member provided at the top; a filter inserted into the interior of the filter housing, forming an inlet passage between the outer surface and the inner surface of the filter housing, and having a drainage passage vertically formed through the center; a lower end cap coupled to the bottom of the filter and closing the bottom of the filter; an upper end cap coupled to the top of the filter, having a flange portion protruding outwardly on the edge side with an inlet hole formed through it that communicates with the inlet passage; and an outlet pipe protruding from the upper center of the upper end cap, having a connecting drainage passage formed vertically communicating with the drainage passage inside, and having its upper end watertightly coupled to the inner surface of the filter head coupling member of the cap. An embodiment of a filter assembly is presented that facilitates securing a flow path, comprising an inlet pipe having its lower end connected to the inner wall of the outlet pipe, concentrically arranged and supported within the outlet pipe, having a folded inlet flow path formed inside, and its upper end watertightly coupled within the filter head.

[0015] According to a preferred feature of the disclosed content, the bent inlet passage of the inlet pipe may include a vertical passage section formed into two sections by a vertical partition plate crossing the inlet pipe, and a horizontal passage section, one end of which is connected to the lower side of the vertical passage section and the other end of which penetrates the outlet pipe.

[0016] According to a preferred feature of the disclosed content, the outlet pipe may be formed to protrude so that its upper end is located at a lower position than the upper end of the inlet pipe.

[0017] According to a more preferred feature of the disclosed content, a support step may be formed on the upper inner surface of the filter housing, on which the flange portion of the upper end cap is seated and supported.

[0018] According to a more preferred feature of the disclosed content, a water flow guide ring is formed protrudingly on the upper inner surface of the cap to guide water penetrating the bent inlet channel to collide and move downward, and a water flow guide inclined plate may be formed around the lower circumference of the outlet pipe.

[0019] According to a more preferred feature of the disclosed content, the filter assembly, which facilitates securing a flow path, may further include a discharge guide tube arranged concentrically within the discharge pipe, with one end connected to the lower side of the horizontal flow path of the inlet pipe and the other end inserted into the upper end of the drainage flow path of the filter to guide the water in the drainage flow path to the discharge pipe. Effects of the invention

[0020] According to a filter assembly that facilitates securing a flow path according to one embodiment of the disclosed content, a bent inlet flow path is formed across an inlet pipe and an outlet pipe integrally formed in the upper end cap of the filter, and an inlet hole is formed through a flange portion formed at the edge of the upper end cap to communicate with the inlet flow path between the filter housing and the filter. As a result, a flow path is secured regardless of the rotational welding area of ​​the filter housing and the cap, so even if a burr is generated during the rotational welding of the filter housing and the cap, the phenomenon of the flow path being blocked by the burr can be prevented in advance, thereby reducing the product defect rate and improving productivity.

[0021] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description in the claims. Brief explanation of the drawing

[0022] FIG. 1 is a diagram showing the usage state of a filter assembly that facilitates securing a flow path according to one embodiment of the disclosed content. FIG. 2 is a perspective view of a filter assembly that facilitates securing a flow path according to one embodiment of the disclosed content. FIG. 3 is an exploded perspective view of a filter assembly that facilitates securing a Euro according to one embodiment of the disclosed content. FIG. 4 is a bottom exploded perspective view of a filter assembly that facilitates securing a flow path according to one embodiment of the disclosed content. FIGS. 5 and 6 are cross-sectional views of a filter assembly that facilitates securing a flow path according to one embodiment of the disclosed content. FIG. 7 is a planar structural diagram of a filter assembly that facilitates securing a flow path according to one embodiment of the disclosed content. FIG. 8 is a water purification operation diagram of a filter assembly that facilitates securing a flow path according to one embodiment of the disclosed content. Specific details for implementing the invention

[0023] Hereinafter, the configuration and effects of a preferred embodiment will be examined with reference to the attached drawings. For reference, in the drawings below, each component is omitted or schematically depicted for convenience and clarity, and the size of each component does not reflect its actual size. Furthermore, throughout the specification, the same reference numerals refer to the same components, and reference numerals for the same configuration in individual drawings will be omitted.

[0025] A filter assembly (1) that facilitates securing a flow path according to one embodiment of the disclosed content is coupled to a filter head (2) as shown in FIG. 1, and purifies water flowing into the interior through an inlet pipe (not shown) of the filter head (2) using a filter (30) and discharges it through an outlet pipe (not shown) of the filter head (2). As shown in FIGS. 1 to 8, it comprises a filter housing (10) formed in a tubular shape with an open top, a cap (20) having a lower end coupled to the top of the filter housing (10) and a filter head coupling member (21) provided at the top, a filter (30) inserted into the interior of the filter housing (10) to form an inlet flow path (A) between the outer surface and the inner surface of the filter housing (10) and a drainage flow path (B) vertically formed through the center, and a lower end cap (40) coupled to the bottom of the filter (30) and closing the bottom of the filter (30). It includes an upper end cap (50) that is coupled to the top of the filter (30) and has a flange portion (51) formed protruding outwardly with an inlet hole (52) formed through it on the edge side that communicates with the inlet passage (A); an outlet pipe (60) that is formed protruding from the upper center of the upper end cap (50) and has a connecting drainage passage (C) formed inside that communicates vertically with the drainage passage (B), and whose upper end is watertightly coupled to the inner circumference of the filter head coupling member (21) of the cap (20); and an inlet pipe (70) whose lower end is connected to the inner wall of the outlet pipe (60), is concentrically arranged and supported within the outlet pipe (60), has a folded inlet passage (D) formed inside, and whose upper end is watertightly coupled to the filter head (2).

[0026] Here, the filter housing (10) forms a receiving space capable of accommodating the filter (30), lower end cap (40), and upper end cap (50) to be described later, and simultaneously forms a water purification channel inside, and is formed in the shape of a tube with an open top.

[0027] On the upper inner surface of such a filter housing (10), a support step (11) is formed, on which the flange portion (51) of the upper end cap (50), which will be described later, is seated and supported.

[0028] The lower part of the cap (20) is joined to the upper part of the aforementioned filter housing (10) by a known method, such as rotational welding.

[0029] The cap (20) partially closes the open top of the filter housing (10) and simultaneously forms a detachable coupling part for the filter head (2), and the top of the cap (20) is provided with a filter head coupling member (21) that is detachably coupled to the filter head (2).

[0030] It is preferable that the outer surface of the filter head coupling member (21) has protrusions formed at intervals of, for example, 180 degrees, so that the filter head coupling member (21) is fitted into the filter head (2) from the bottom to the top, rotated at a 90-degree angle to be coupled, and then rotated at a 90-degree angle in the opposite direction to be pulled out from the filter head (2) from the top to the bottom and separated.

[0031] Additionally, a water flow guide ring (22) is formed protruding from the upper inner surface of the cap (20) to guide water passing through the bent inlet channel (D) of the inlet pipe (70), which will be described later, to move downward upon impact. It is preferable that this water flow guide ring (22) be formed in the shape of a cylindrical partition wall spaced apart from the radial outer end of the horizontal channel section (d2) of the bent inlet channel (D).

[0032] A filter (30) is inserted inside the aforementioned filter housing (10). The filter (30) serves to filter out foreign substances or harmful substances contained in the water introduced into the filter housing (10), and it is preferable for it to be formed in a cylindrical shape.

[0033] These filters (30) may be formed as one of a sediment filter, a carbon filter, a hollow fiber membrane filter, and a reverse osmosis filter, or may be formed as a composite filter in which two or more of the sediment filter, carbon filter, hollow fiber membrane filter, and reverse osmosis filter are arranged in concentric overlapping circles.

[0034] In addition, an inlet channel (A) is formed between the outer surface of the filter (30) and the inner surface of the filter housing (10), and a drainage channel (B) is vertically formed in the center of the filter (30) through which purified water moves while flowing through the filter (30) in a radially inward direction.

[0035] A lower end cap (40) is attached to the bottom of the aforementioned filter (30). The lower end cap (40) serves to close the bottom of the filter (30), and it is preferable that it have a circular housing shape with an open top surface so that the bottom of the filter (30) can be pressed in.

[0036] Additionally, an upper end cap (50) is attached to the top of the filter (30). The upper end cap (50) serves to close the top of the filter (30) excluding the drainage channel (B), and it is preferable that it have a circular housing shape with an open bottom surface so that the top of the filter (30) can be pressed in.

[0037] In addition, a flange portion (51) is formed to protrude outward in a ring shape on the edge side of the upper end cap (50), and an inlet hole (52) is formed through the flange portion (51) to communicate with the inlet passage (A) formed between the inner surface of the filter housing (10) and the outer surface of the filter (30).

[0038] A water outlet pipe (60) is formed protruding from the upper center of the upper end cap (50) described above. The water outlet pipe (60) allows water that has moved upward to flow through the drainage channel (B) formed in the center of the filter (30) and is finally discharged to the outside (e.g., filter head (2)) from the filter assembly (1) which facilitates securing a flow path according to one embodiment of the disclosed content.

[0039] The upper end of the outlet pipe (60) is watertightly connected to the inner circumference of the filter head coupling member (21) of the cap (20), and a connected drainage channel (C) is formed inside the outlet pipe (60) that communicates vertically with the drainage channel (B). Additionally, it is preferable that the outlet pipe (60) be formed to protrude so that its upper end is positioned lower than the upper end of the inlet pipe (70) to be described later.

[0040] Additionally, a water flow guide inclined plate (61) is formed around the lower circumference of the outlet pipe (60). The water flow guide inclined plate (61) allows water to flow through the inlet channel (D) of the inlet pipe (70), which will be described later, collide with the water flow guide ring (22) of the cap (20), and then fall along the outer wall of the outlet pipe (60), thereby guiding the water to the inlet hole (52) formed in the flange portion (51) of the upper end cap (50), so that water can flow into the inlet channel (A) between the inner surface of the filter housing (10) and the outer surface of the filter (30). It is preferable that the plate has a shape similar to a triangular plate that expands radially outward as it goes downward.

[0041] An inlet pipe (70) is concentrically arranged and supported within the aforementioned outlet pipe (60). The inlet pipe (70) allows water flowing in from the filter head (2) to be supplied to the filter (30) inside the filter housing (10) so that water purification treatment can be performed, and a folded inlet water passage (D) is formed inside.

[0042] The upper end of the inlet pipe (70) protrudes higher than the upper end of the outlet pipe (60) and is watertightly connected to the filter head (2), and the lower end of the inlet pipe (70) is connected to the inner wall of the outlet pipe (60) through the radial outer end of the bent inlet water passage (D), so that the inlet pipe (70) is supported concentrically spaced from the inside of the outlet pipe (60).

[0043] The folded inlet passage (D) of the inlet pipe (70) is formed in a shape that includes a vertical passage section (d1) that is divided into two sides by a vertical partition plate (71) that crosses the inlet pipe (70), and a horizontal passage section (d2) that is connected to the lower side of the vertical passage section (d1) at one end and penetrates the outlet pipe (60) at the other end, so that one is formed symmetrically on each side with the vertical partition plate (71) as the boundary.

[0044] As shown in FIG. 7, the arrangement structure of the aforementioned outlet pipe (60) and the inlet pipe (70) having a bent inlet channel (D) allows for the inflow of water through the bent inlet channel (D) and the discharge of water through the space between the inlet pipe (70) and the outlet pipe (60), wherein the horizontal channel section (d2) of the bent inlet channel (D) is arranged at 180-degree angle intervals in the space between the inlet pipe (70) and the outlet pipe (60). At this time, the horizontal channel section (d2) of the bent inlet channel (D) needs to be designed with appropriate dimensions so that excessive resistance to the discharge does not occur.

[0045] Inside the aforementioned discharge pipe (60), a discharge guide pipe (80) is arranged concentrically on the lower side of the inlet pipe (70). The discharge guide pipe (80) guides water that flows through the drainage channel (B) of the filter (30) and moves upward to both sides of the bent inlet channel (D) of the inlet pipe (70) so that it is discharged through the discharge pipe (60), while also serving to support the inlet pipe (70) from below.

[0046] To this end, the upper end of the discharge guide tube (80) is connected to the lower side of the inlet tube (70), particularly the horizontal flow path (d2), and the other end of the discharge guide tube (80) is inserted into the upper end of the drainage flow path (B) of the filter (30).

[0047] In addition, when the filter assembly (1) that facilitates securing a flow path according to one embodiment of the disclosed content is not in use, a protective cap (90) that simultaneously covers the outlet pipe (60) and the inlet pipe (70) can be attached to the filter head coupling portion (21) of the cap (20).

[0049] Hereinafter, the operation of a filter assembly (1) that facilitates securing a flow path according to one embodiment disclosed with reference to FIGS. 1 to 8 is described as follows:

[0050] When a filter assembly (1) that facilitates securing a flow path according to one embodiment of the disclosed content is coupled to a filter head (2), water supplied through the inlet pipe (not shown) of the filter head (2) flows through the bent inlet flow path (D) of the inlet pipe (70) and is discharged to the outside of the outlet pipe (60), then moves downward while colliding with the water flow guide ring (22), and then is guided along the water flow guide inclined plate (61) formed around the lower circumference of the outlet pipe (60) toward the inlet hole (52) formed in the flange portion (51) of the upper end cap (50).

[0051] Water passing through the inlet hole (52) of the upper end cap (50) flows into the inlet channel (A) formed between the inner surface of the filter housing (10) and the outer surface of the filter (30), then flows through the filter (30) to be purified, then moves upward along the drainage channel (B) formed in the center of the filter (30), then flows through the connected drainage channel (C) of the outlet pipe (60) connected to the drainage channel (B), finally exits the outlet pipe (60), and is discharged through the outlet pipe (60) (not shown).

[0052] In the case of a filter assembly (1) that facilitates securing a flow path according to one embodiment of the disclosed content, a bent inlet flow path (D) is formed across an inlet pipe (70) and an outlet pipe (60) that are integrally formed on the upper end cap (50) of the filter (30), and an inlet hole (52) is formed through the flange portion (51) formed on the edge of the upper end cap (50) to communicate with the inlet flow path (A) between the filter housing (10) and the filter (30), thereby securing a flow path regardless of the rotational welding area of ​​the filter housing (10) and the cap (20). Consequently, even if a burr is generated during the rotational welding of the filter housing (10) and the cap (20), the phenomenon of the flow path being blocked by the burr can be prevented in advance, thereby reducing the product defect rate and simultaneously improving productivity.

[0054] Although preferred embodiments of the present invention have been described above with reference to the attached drawings, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all technical concepts of the present invention. Therefore, it should be understood that various equivalents and modifications that can replace them may exist at the time of filing this application. Accordingly, the embodiments described above should be understood as illustrative in all respects and not restrictive, and the scope of the present invention is defined by the claims set forth below rather than by the detailed description. Furthermore, all modifications or variations derived from the meaning and scope of the claims and equivalent concepts should be interpreted as being included within the scope of the present invention. Explanation of the symbols

[0055] 1 : Filter assembly with easy access to the water flow path 2 : Filter head 10 : Filter housing 11 : Support step 20 : Cap 21 : Filter head coupling 22 : Water flow guide ring 30 : Filter 40 : Lower end cap 50 : Upper end cap 51 : Flange section 52 : Inlet port 60 : Outlet pipe 61 : Water flow guide inclined plate 70 : Inlet pipe 71 : Vertical partition plate A : Inlet water flow path B : Drainage water flow path C : Connecting drainage water flow path D : Folded inlet water flow path d1 : Vertical water flow path section d2 : Horizontal water flow path section

Claims

Claim 1 A filter housing formed in a tubular shape with an open top; a cap having a lower end coupled to the top of the filter housing and a filter head coupling port provided at the top; a filter inserted into the interior of the filter housing, forming an inlet passage between the outer surface and the inner surface of the filter housing, and having a drainage passage vertically formed through the center; a lower end cap coupled to the bottom of the filter and closing the bottom of the filter; an upper end cap coupled to the top of the filter, having a flange portion protruding outwardly on the edge side with an inlet hole formed through it that communicates with the inlet passage; and an outlet pipe protruding from the upper center of the upper end cap, having a connecting drainage passage formed vertically communicating with the drainage passage inside, and having its upper end watertightly coupled to the inner surface of the filter head coupling port of the cap. A filter assembly that facilitates easy securing of flow paths, comprising an inlet pipe having a lower end connected to the inner wall of the outlet pipe, concentrically arranged and supported within the outlet pipe, having a bent inlet flow path formed inside, and an upper end connected watertightly within the filter head, wherein the bent inlet flow path of the inlet pipe includes a vertical flow path section divided into two sides by a vertical partition plate crossing the inlet pipe, and a horizontal flow path section having one end connected to the lower side of the vertical flow path section and the other end penetrating the outlet pipe, and symmetrically formed with one on each side of the vertical partition plate. Claim 2 delete Claim 3 A filter assembly that facilitates securing a flow path, characterized in that, in claim 1, the outlet pipe is formed to protrude so that its upper end is positioned lower than the upper end of the inlet pipe. Claim 4 A filter assembly that facilitates securing a flow path, characterized in that, in claim 1 or claim 3, a support step is formed on the upper inner surface of the filter housing, on which the flange portion of the upper end cap is seated and supported. Claim 5 A filter assembly that facilitates securing a water flow path, characterized in that, in claim 1 or claim 3, a water flow guide ring is formed protrudingly on the upper inner surface of the cap to guide water penetrating the bent inlet water flow path to collide and move downward, and a water flow guide inclined plate is formed on the lower circumference of the outlet pipe. Claim 6 A filter assembly that facilitates securing a flow path, characterized in that, in claim 1 or claim 3, it further comprises a discharge guide tube arranged concentrically within the discharge pipe, wherein one end is coupled to the lower side of the horizontal flow path portion of the inlet pipe and the other end is inserted into the upper end of the drainage flow path of the filter to guide the water in the drainage flow path to the discharge pipe.

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