Filter for water purification having scale prevention capability

Abstract

The present invention relates to a filter for water purification having scale prevention ability, which is installed in a water purifier and is used to suppress the occurrence of scale caused by limestone contained in raw water. The filter for water purification having scale prevention ability according to the present invention is mounted on a water purifier to generate purified water by having an inlet part of which one end is closed and the other end is supplied with raw water and an outlet part through which purified water is discharged, the filter comprising: a hollow cylindrical carbon filter that primarily purifies the raw water introduced into the inlet part to allow the raw water to pass therethrough from the outside to the inside; a cylindrical core filter inserted into a hollow part of the carbon filter and having both ends inserted in and fixedly installed to filter fixing parts formed at an upper cover installed at one end of the carbon filter and a lower cover having an outlet part installed on the other end thereof, respectively, so as to thereby secondarily purify the primarily purified raw water; and a phosphate filter positioned on the bottom surface of one side of the core filter to tertiarily purify the secondarily purified raw water.

Description

Water purifier filter with scale prevention capability

[0001] The present invention relates to a water purification filter installed in a water purifier.

[0002] Specifically, it relates to a water purification filter having a scale-preventing ability that is designed to suppress the occurrence of scale due to lime contained in raw water.

[0003] In general, as interest in water quality increases due to industrial development and improved standards of living, tap water supplied to households and offices (hereinafter referred to as “raw water”) is purified using water purifiers, and the use of water purifiers is rapidly increasing.

[0004] As the use of water purifiers increases, the technology for water purification filters used in water purifiers is also developing.

[0005] Let's look at the technology for water purification filters used in water purifiers.

[0006] Domestic patent (KR) registration patent No. 10-2279332 (registered on July 14, 2021), titled 'Water purifier filter assembly and water purifier including the same', provides a technology that enables a water purifier filter to have a structure that is easy to install and remove from a water purifier.

[0007] In the 'Water Purifier Filter Assembly', which is a domestic patent (KR) registration patent number 10-1447907 (registered on September 30, 2014), the fluid can be opened and closed simply by attaching and detaching the filter cartridge, but the structure is simplified to provide excellent effects in manufacturing and maintenance, and a structural means is provided to reduce the excessive cartridge removal force required due to the pressure existing inside the filter assembly when removing the filter cartridge, and a structural means is provided to make it easy to set the fastening position when attaching the filter cartridge.

[0008] In addition, the above domestic patent (KR) registration patent No. 10-2279332 and registration patent No. 10-1447907 provide detailed structures in which raw water flows in one direction and purified water is discharged after the raw water is filtered through a filter.

[0009] Domestic patent (KR) registration patent No. 10-1317643, ‘Polyamide nanocomposite membrane and its manufacturing method’, provides a technology for a polyamide nanocomposite composed of a polyamide active layer formed by containing an organic phosphate.

[0010] The present invention aims to provide a water purification filter having scale prevention capability.

[0011] The present invention aims to provide a water purification filter having a scale-preventing ability that can solve problems caused by scale generated in nozzles and the like by suppressing the generation of scale using phosphate.

[0012] The present invention aims to provide a water purification filter having a scale-preventing ability that can prevent scale caused by hard substances such as calcium, magnesium, and iron.

[0013] The present invention aims to provide a water purification filter having a scale-preventing ability suitable for users who mainly use groundwater as raw water.

[0014] The present invention aims to provide a water purification filter having a scale-preventing ability, which is structured to control the amount of phosphate according to the concentration of lime contained in groundwater when using groundwater as raw water.

[0015] The purpose of the present invention is to solve the problem of a water purification filter having a scale-preventing ability, which is installed in a water purifier and has an inlet through which raw water is supplied and an outlet through which purified water is discharged, and which has one end closed and the other end having an inlet, through which raw water is supplied, and an outlet, through which purified water is discharged, and which is mounted in a water purifier and which produces purified water, the water purification filter comprising: a hollow cylindrical carbon filter for primary purification by allowing raw water introduced into the inlet to pass from the outside to the inside; a cylindrical core filter inserted into the hollow portion of the carbon filter, and having both ends inserted and fixed into filter fixing portions formed on an upper cover installed at one end of the carbon filter and a lower cover having an outlet installed at the other end, respectively, for secondary purification of primary purified raw water; and a phosphate filter located on the bottom surface of one side of the core filter for tertiary purification of secondary purified raw water.

[0016] The above phosphate filter can be installed in the upper filter fixing part formed in the upper cover or the lower filter fixing part formed in the lower cover.

[0017] A cover-type phosphate filter installation part into which a phosphate filter is inserted is formed in one of the filter fixing parts formed in the upper cover and the lower cover, and the phosphate filter inserted in the cover-type phosphate filter installation part is fixed by making contact with the end of the core filter to be inserted later.

[0018] The above core filter includes a filter case having a cylindrical shape with a closed lower portion and a plurality of through grooves on the outer surface, an inner filter installation portion communicating with the outside through the through grooves and in which an inner filter is installed, and an outlet passage for guiding purified water filtered by the inner filter to an outlet, and a case-type phosphate filter installation opening in which a phosphate filter is installed is positioned on one bottom surface of the filter case.

[0019] The above case-type phosphate filter installation hole is positioned in the cover-type phosphate filter installation part formed in the upper filter fixing part formed in the upper cover.

[0020] The above phosphate filter is made of a phosphate hard case having a plurality of holes formed so as to be able to accommodate phosphate inside, or is made of a phosphate non-woven case so as to be able to accommodate phosphate inside.

[0021] The water purification filter having the scale-preventing ability of the present invention, which is constructed in this manner, can solve various problems caused by scale.

[0022] In particular, when groundwater containing a large amount of hardness substances is used as raw water, it can suppress scale caused by calcium, magnesium, iron, lime, etc., thereby solving various problems caused by this.

[0023] Moreover, in the case of groundwater, there is a large difference in the concentration of limestone due to soil and geographical influences, but the water purification filter having the scale-preventing ability of the present invention provides a structure that can easily control the amount of phosphate contained in the phosphate filter used to suppress scale formation.

[0024] Figure 1 is a perspective view of a water purification filter used in the present invention and in the related art.

[0025] Figure 2 is a partially disassembled perspective view of a water purification filter used in the present invention and in the related art.

[0026] Figure 3 is a front cross-sectional view of a water purification filter having a scale-preventing capability showing a first embodiment of the present invention.

[0027] Fig. 4 is a front cross-sectional view taken along line AA of Fig. 3.

[0028] Figure 5 is a perspective view of a separated state of a filter portion of a water purifier having a scale-preventing capability according to a first embodiment of the present invention.

[0029] Figure 6 is a detailed, separated perspective view of the main parts of a water purification filter having a scale-preventing capability according to the first embodiment of the present invention.

[0030] Fig. 7 is a detailed cross-sectional view of the main part of a water purification filter having a scale-preventing ability showing a first embodiment of the present invention.

[0031] Fig. 8 is a front cross-sectional view of a filter portion of a water purifier having a scale-preventing capability according to a second embodiment of the present invention.

[0032] Fig. 9 is a detailed cross-sectional view of the main part of a water purification filter having a scale-preventing ability showing a second embodiment of the present invention.

[0033] Fig. 10 is a front cross-sectional view of a filter portion of a water purification filter having a scale-preventing capability according to a third embodiment of the present invention.

[0034] Fig. 11 is a detailed, separated perspective view of a case-type phosphate filter installation part, which is a main part of a water purifier filter having a scale-preventing ability according to a third embodiment of the present invention.

[0035] Fig. 12 is a detailed cross-sectional view of a case-type phosphate filter installation part, which is a main part of a water purifier filter having a scale-preventing ability according to a third embodiment of the present invention.

[0036] Fig. 13 is a front cross-sectional view of a water purification filter having a scale-preventing capability showing a fourth embodiment of the present invention.

[0037] Fig. 14 is a cross-sectional view of the main part of a water purification filter having a scale-preventing ability according to the fourth embodiment of the present invention.

[0038] Fig. 15 is a cross-sectional view of the main part of a water purification filter having a scale-preventing ability according to a fourth embodiment of the present invention.

[0039] [Explanation of symbols]

[0040] F: Water purification filter with scale prevention capability

[0041] 100: Filter housing 110: Housing body

[0042] 120: Housing cover 130: Inlet

[0043] 200: Filter section 210: Carbon filter

[0044] 220: Core filter 221: Filter case

[0045] 222: Through hole 223: Inner filter installation part

[0046] 224: Filter 225: Outlet channel

[0047] 230, 230': Phosphate filter

[0048] 240: Upper cover 241: Upper filter fixing part

[0049] 250: Lower cover 251: Lower filter fixing part

[0050] 252: Outer filter fixing part 253: Fixing protrusion part

[0051] 260: Outlet 270: Cover-type phosphate filter installation part

[0052] 280: Case-type phosphate filter installation hole

[0053]

[0054] The terms or words used in this specification and claims should not be construed as limited to their usual or dictionary meanings, and the embodiments described in this specification and the configurations illustrated in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application.

[0055]

[0056] The water purification filter having the scale-preventing ability of the present invention is a water purification filter installed in a water purifier and includes phosphate to suppress the occurrence of scale due to hardness substances and lime contained in raw water.

[0057] Scale that occurs in water purifiers generally occurs at the rear of the hot water module, blocks the product's flow path, reduces the flow of hot water, and causes problems such as valve errors and excessive extraction noise.

[0058] Among the hardness substances present in water, calcium and magnesium combine with carbonates to exist in the form of calcium carbonate and magnesium carbonate. When the temperature rises, calcium carbonate is precipitated, and magnesium carbonate and iron combine with the precipitated calcium carbonate to form scale.

[0059] Phosphates have a better affinity for calcium, magnesium, and iron than carbonates, and can inhibit the formation of scale.

[0060]

[0061] Hereinafter, the present invention will be described in detail with reference to the drawings showing embodiments thereof.

[0062] Referring to Figures 1 to 4,

[0063] The composition of the water purification filter (F) having the scale prevention capability of the present invention largely includes a hollow cylindrical filter housing (100) having one end closed and the other end formed such that an inlet (130) for supplying raw water protrudes outward, a filter unit (200) including a carbon filter (210) built into the inner hollow portion of the filter housing (100) and allowing raw water introduced into the inlet (130) to pass from the outside to the inside to purify the water, a core filter (220), and a phosphate filter (230), an upper cover (240) installed on the upper end of the carbon filter (210) to close the upper end and secure the upper end of the core filter (220), and a lower cover (250) installed on the lower end of the carbon filter (210) to secure the lower end of the core filter (220), and having an outlet (260) for discharging purified water.

[0064]

[0065] The above filter housing (100) is composed of a housing body (110) having an inlet (130) formed in the hollow portion on the inside so that a carbon filter (210) having an upper cover (240) and a lower cover (250) installed at both ends can be installed therein, and a housing cover (120) that is connected to the housing body (110).

[0066]

[0067] The above filter unit (200) includes a hollow cylindrical carbon filter (210) that performs primary purification of raw water introduced into the inlet (130), a cylindrical core filter (220) that is inserted into the hollow portion of the carbon filter (210) and performs secondary purification of the primary purified raw water, and a phosphate filter (230) that is located on the bottom side of the core filter (220) and performs tertiary purification of the secondary purified raw water.

[0068]

[0069] The above carbon filter (210) is formed in a cylindrical shape, and the upper end is closed by installing an upper cover (240), and the lower end is formed by installing a lower cover (250) with an outlet (260).

[0070] The two ends of the core filter (220) are installed by being inserted into the filter fixing parts (241, 251) formed on the upper cover (240) and the lower cover (250) installed on both ends of the carbon filter (210), respectively. It is usually preferable that the filter housing (100), the carbon filter (210), and the core filter (220) are installed to have concentric circles.

[0071] The above core filter (220) includes a filter case (221) having a cylindrical shape with a closed lower portion and a plurality of through grooves (222) on the outer surface, an inner filter installation part (223) communicating with the outside through the through grooves (222), an inner filter (224) installed in the inner filter installation part (223), and an outlet passage (225) that guides purified water filtered by the inner filter (224) to an outlet (260).

[0072] At both ends of the filter case (221), a plurality of packings (P1, P2) in the form of O-rings are installed so that they are sealed and fixed when inserted into the filter fixing portions (241, 251) formed on the upper cover (240) and the lower cover (250), respectively.

[0073] The above inner filter (224) usually uses a hollow fiber membrane filter.

[0074]

[0075] The above phosphate filter (230) can be installed in a position where secondary purified raw water passing through the core filter (220) can be purified tertiarily, and can be located above or below the core filter (220). For this purpose, either the upper cover (240) or the lower cover (250) has a cover-type phosphate filter installation part (270).

[0076] FIG. 3 and FIG. 5 to FIG. 7 show a state in which a phosphate filter (230) is installed on a lower cover (250), and FIG. 8 to FIG. 9 show a state in which a phosphate filter (230) is installed on an upper cover (240).

[0077] Referring to FIG. 3 and FIG. 5 to FIG. 7,

[0078] The lower cover (250) has a lower filter fixing part (251) into which the lower part of the core filter (220) is inserted, and a space for a cover-type phosphate filter installation part (270) into which a phosphate filter (230) is inserted is formed in the lower filter fixing part (251), and as shown in FIG. 7, the phosphate filter (230) inserted into the cover-type phosphate filter installation part (270) is usually fixed by the lower part of the core filter (220) that is inserted later.

[0079] Referring to FIGS. 8 and 9,

[0080] The upper cover (240) has an upper filter fixing portion (241) into which the upper portion of the core filter (220) is inserted, and a space for a cover-type phosphate filter installation portion (270) into which a phosphate filter (230) is inserted is formed in the upper filter fixing portion (241), and as shown in FIG. 9, the phosphate filter (230) inserted into the cover-type phosphate filter installation portion (270) is usually fixed by the upper portion of the core filter (220) that is inserted later.

[0081]

[0082] Figures 10 and 11 illustrate another embodiment of the present invention.

[0083] Figures 10 and 11 show a case-type phosphate filter installation device (280) in which a phosphate filter (230) is installed.

[0084] The above case-type phosphate filter installation device (280) can be installed at one end of the core filter (220), and in the embodiment, it is installed at the top.

[0085] The above case-type phosphate filter installation opening (280) is a space where a phosphate filter (230) is inserted and installed, and has a phosphate filter installation portion (281) having a plurality of through holes (281a) formed on the bottom to communicate with the inner filter installation portion (223), a connection path portion (282) that is connected to the phosphate filter installation portion (281) through a plurality of connection paths (282a) and connects to an outflow path (225), and a position-fixing protrusion portion (283) that is inserted into the outflow path (225) to prevent the connection path portion (282) from being separated from the outflow path (225).

[0086] When the above case-type phosphate filter installation opening (280) is installed on the upper side of the core filter (220), it is preferable that a cover-type phosphate filter installation opening (270) be provided on the upper filter fixing section (241) into which the upper part of the core filter (220) is inserted.

[0087]

[0088] The above phosphate filter (230) is configured to suppress the occurrence of scale caused by hardness substances contained in raw water.

[0089] When groundwater is used as raw water, there is a significant difference in the amount of hardness material depending on the characteristics of the local soil. From this perspective, when manufacturing a water purification filter, it should be easy to control the amount of phosphate salt included in the phosphate filter (230).

[0090] For this purpose, the phosphate filter (230) can be provided as a phosphate hard case (230a) that is formed so as to accommodate phosphate inside and has a number of holes, or as a phosphate non-woven case (230b) that is formed so as to accommodate phosphate inside.

[0091] The above phosphate hard case (230a) is configured in an assembled form with an upper case and a lower case, so that the amount of phosphate contained inside can be controlled, and the inside and the outside where phosphate is contained are connected by a number of holes formed therein.

[0092] In the case of the above phosphate non-woven case (230b), the amount of phosphate can be packaged and provided in various forms.

[0093]

[0094] Figures 13 to 15 illustrate another embodiment of the present invention.

[0095] In FIGS. 13 to 15, the raw water flowing into the inlet (130) is first treated in a phosphate filter (230') and then supplied to a carbon filter (210) and a core filter (220) for second and third treatments.

[0096] This can solve problems such as the phenomenon in which scale generated by hardness materials is created in the carbon filter (210) and core filter (220), shortening the life of the filter.

[0097] Referring to FIGS. 13 to 15,

[0098] The phosphate filter (230') is shaped like a donut and is located between the lower inner side of the housing body (110) and the outer filter fixing part (252) of the lower cover (250).

[0099] Typically, the phosphate filter (230') is inserted into the outer filter fixing part (252) of the lower cover (250) and then installed by inserting it into the housing body (110), or is inserted into the lower inside of the housing body (110) and then fixedly installed by being combined with the outer filter fixing part (252) of the lower cover (250).

[0100] A fixing projection (253) for fixing a phosphate filter (230') is formed on the upper part of the outer filter fixing portion (252) of the lower cover (250).

[0101] The remaining unexplained symbols described in the drawing have the same configuration as the identical symbols described above, and a detailed description thereof is omitted.

[0102] The water purification filter having the scale prevention capability of the present invention described in FIGS. 13 to 15 is such that raw water is introduced through an inlet (130), the introduced raw water passes through a phosphate filter (230') and is first treated, the raw water treated in the phosphate filter (230') passes through a carbon filter (210) and is secondarily treated, and the raw water treated in the carbon filter (210) passes through a core filter (220) and is thirdly treated, and then is guided to an outlet passage (225) and discharged through an outlet (260).

[0103] The water purification filter having the scale-preventing ability of the present invention can be widely used in farms and other places that use groundwater due to lack of tap water supply, as it can solve problems caused by scale caused by hard substances.

[0104] In particular, it can be widely used because it can appropriately respond to water quality conditions when there is little or much hardness material depending on regional characteristics.

Claims

1. In a water purification filter, which is installed in a water purifier to produce purified water by having one end closed and the other end having an inlet (130) through which raw water is supplied and an outlet (260) through which purified water is discharged, A hollow cylindrical carbon filter (210) for primary purification by passing raw water introduced into the inlet (130) from the outside to the inside; a cylindrical core filter (220) inserted into the hollow portion of the carbon filter (210) and fixedly installed at both ends to filter fixing parts (241, 251) respectively formed on the upper cover (240) installed at one end of the carbon filter (210) and the lower cover (250) having the outlet (260) installed at the other end, for secondary purification of the primary purified raw water; a phosphate filter (230) located at one side of the core filter (220) for tertiary purification of the secondary purified raw water; The above core filter (220) is It includes a filter case (221) having a cylindrical shape with a closed lower part and a plurality of through grooves (222) on the outer surface, an inner filter installation part (223) in which an inner filter (224) is installed so as to communicate with the outside through the through grooves (222), and an outlet passage (225) for guiding purified water filtered by the inner filter (224) to an outlet (260). A water purifier having a scale-preventing capability, characterized in that a case-type phosphate filter installation port (280) in which the phosphate filter (230) is installed is located on one side of the filter case (221).

2. In paragraph 1, A water purification filter having a scale-preventing ability, characterized in that the above phosphate filter (230) is installed in the upper filter fixing part (241) formed in the upper cover (240).

3. In paragraph 1, A water purification filter having a scale-preventing ability, characterized in that the above phosphate filter (230) is installed in a lower filter fixing part (251) formed in the lower cover (250).

4. In paragraph 1, A cover-type phosphate filter installation part (270) into which a phosphate filter (230) is inserted is formed in one of the filter fixing parts (241, 251) formed in the upper cover (240) and the lower cover (250). The phosphate filter (230) inserted into the above-mentioned cover-type phosphate filter installation part (270) is fixed in contact with the end of the core filter (220). A water purifier filter having scale-preventing capabilities characterized by:

5. In paragraph 1, A water purification filter having a scale-preventing capability, characterized in that the case-type phosphate filter installation part (280) is located in the cover-type phosphate filter installation part (270) formed in the upper and lower filter fixing parts (241, 251) formed in the upper and lower covers (240, 250).

6. In any one of paragraphs 1 to 5, The above phosphate filter (230) is A water purifier having a scale-preventing capability, characterized by being made of a phosphate hard case (230a) having a plurality of holes formed so as to be able to accommodate phosphate on the inside, or a phosphate non-woven fabric case (230b) so as to be able to accommodate phosphate on the inside.

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