Reverse osmosis filtration assembly and water purification apparatus

Abstract

The application discloses a reverse osmosis filtering assembly and a water purification device, wherein the reverse osmosis filtering assembly comprises a filter bottle, a reverse osmosis filter core, a center pipe, a sealing layer and an elastic piece; the reverse osmosis filter core is sleeved on the center pipe; the center pipe is provided with a water passing hole communicating with the reverse osmosis filter core; and the reverse osmosis filter core and the filter bottle have a water passing gap, and the center pipe is communicated with the water outlet through the water passing gap. According to the technical scheme, pure water channels are arranged in the water passing gap and the center pipe simultaneously, and the elastic piece is arranged in the water passing gap; when the elastic piece is compressed by the pressure of a booster pump, more pure water can be filled in the water passing gap; when the booster pump is turned off, the elastic piece restores the volume and extrudes the excessive pure water in the water passing gap to flow back to the reverse osmosis filter core reversely, so that part of waste water in the reverse osmosis filter core is discharged, the TDS value of the water in the reverse osmosis filter core is improved, and the taste of the first cup of water obtained by a user is improved.

Description

Technical Field

[0001] This invention relates to the field of water purification equipment technology, and in particular to a reverse osmosis filter component and a water purification device. Background Technology

[0002] As people increasingly prioritize quality of life, water quality has become a major concern. Water purifiers with reverse osmosis capabilities are gaining popularity due to the fresher, more hygienic, and safer purified water they produce. Raw water typically has a high total dissolved solids (TDS). Reverse osmosis filters, aided by a booster pump, block a large number of ions in the raw water before reaching the osmosis membrane, ensuring that the TDS of the water passing through the membrane meets drinking water standards. However, if the water purifier is shut down for an extended period and then restarted, the first glass of purified water will have a higher TDS, resulting in lower quality water that does not meet the user's needs.

[0003] The aforementioned TDS refers to Total Dissolved Solids (TDS), also known as the total amount of dissolved solids, and is measured in milligrams per liter (mg / L). It indicates how many milligrams of dissolved solids are dissolved in one liter of water. The higher the TDS value, the more dissolved substances are present in the water. Summary of the Invention

[0004] The main objective of this invention is to provide a reverse osmosis filtration component that improves the taste of the first glass of water after the water purifier is turned on.

[0005] To achieve the above objectives, the present invention provides a reverse osmosis filtration assembly comprising:

[0006] A filter bottle, wherein the filter bottle is provided with an inlet, an outlet and a wastewater outlet;

[0007] The reverse osmosis filter element is installed inside the filter bottle;

[0008] The central tube is fitted with the reverse osmosis filter element, and the central tube has a water passage hole that connects to the reverse osmosis filter element. There is a water passage gap between the reverse osmosis filter element and the filter bottle, and the central tube is connected to the water outlet through the water passage gap.

[0009] A sealing structure is provided on the outer periphery of the reverse osmosis filter element, and the sealing structure is used to separate the reverse osmosis filter element from the water passage gap;

[0010] An elastic element is disposed within the water passage gap. Raw water is pressurized by a water pump and flows into the water inlet. The elastic element contracts under water pressure. When the reverse osmosis filter element assembly stops operating, the compressed elastic element inside the filter bottle gradually expands and recovers, squeezing the pure water in the central tube and the water passage gap back into the reverse osmosis filter element.

[0011] In one embodiment, the reverse osmosis filtration assembly further includes a lower end cap, the lower side of which is mounted on the filter bottle, and the upper side of which is connected to the reverse osmosis filter element.

[0012] In one embodiment, the lower end cover is provided with a first partition and a second partition. The first partition and the second partition separate the lower end cover into an inlet channel, a wastewater channel and an outlet channel. Raw water entering the inlet flows into the reverse osmosis filter element through the inlet channel. Wastewater in the reverse osmosis filter element flows out from the wastewater outlet through the wastewater channel. Filtered water flowing out from the water passage gap flows out from the outlet through the outlet channel.

[0013] In one embodiment, the lower end cap has a first limiting portion extending toward the reverse osmosis filter element, the first limiting portion being disposed around the outer periphery of the reverse osmosis filter element.

[0014] In one embodiment, the reverse osmosis filtration assembly further includes an upper end cover, the reverse osmosis filter element is connected to the upper end cover, the middle of the upper end cover is provided with a connecting section protruding towards the reverse osmosis filter element, the connecting section is provided with a through groove, and the through groove is connected to the flow path inside the central tube.

[0015] In one embodiment, the upper surface of the upper end cover is recessed to provide a water passage, one side of the water passage is connected to the through groove, and the other side of the water passage is connected to the water passage gap.

[0016] In one embodiment, the upper end cover has a second limiting portion extending toward the lower end cover, the second limiting portion being disposed around the outer periphery of the reverse osmosis filter element.

[0017] In one embodiment, the sealing layer is also disposed on the outer periphery of the lower end cover and the upper end cover.

[0018] In one embodiment, the elastic element is sleeved on the sealing layer, and there is a gap between the elastic element and the lower end cover, and a gap between the elastic element and the upper end cover.

[0019] In one embodiment, the elastic member has a receiving cavity filled with a compressible medium.

[0020] In one embodiment, the elastic element is disposed around the outside of the reverse osmosis filter element.

[0021] In one embodiment, the length of the elastic element is less than the length of the reverse osmosis filter element.

[0022] In one embodiment, the height of the elastic element is L1, the height of the reverse osmosis filter element is L2, and L1 and L2 satisfy 1 / 3≤L1 / L2≤5 / 6.

[0023] In one embodiment, the reverse osmosis filtration assembly further includes a top cover, the top of the filter bottle having an installation port, and the top cover being installed at the installation port.

[0024] This invention also proposes a water purification device, which includes a reverse osmosis filtration assembly. The reverse osmosis filtration assembly includes a filter bottle, a reverse osmosis filter element, a central tube, a sealing structure, and an elastic element. The filter bottle is provided with an inlet, an outlet, and a wastewater outlet. The reverse osmosis filter element is disposed inside the filter bottle. The reverse osmosis filter element is sleeved on the central tube, which has a water passage hole communicating with the reverse osmosis filter element. There is a water passage gap between the reverse osmosis filter element and the filter bottle, and the central tube communicates with the outlet through the water passage gap. The sealing structure is disposed on the outer periphery of the reverse osmosis filter element, and the sealing structure is used to separate the reverse osmosis filter element from the water passage gap. The elastic element is disposed in the water passage gap. Raw water is pressurized by a water pump and flows into the inlet. The elastic element is compressed by the water pressure. When the reverse osmosis filter element assembly stops operating, the compressed elastic element in the filter bottle gradually expands and recovers, squeezing the pure water in the central tube and the water passage gap back into the reverse osmosis filter element.

[0025] The technical solution of this invention employs a pure water path that is simultaneously set in the water passage gap and the central pipe, and an elastic element is placed in the water passage gap. When the elastic element is compressed by the pressure of the booster pump, more pure water can fill the water passage gap. When the booster pump is turned off, the elastic element returns to its original volume, squeezing the excess pure water in the water passage gap back into the reverse osmosis filter element. This discharges some of the wastewater in the reverse osmosis filter element, increases the TDS value of the water in the reverse osmosis filter element, and thus improves the taste of the first cup of water obtained by the user. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the reverse osmosis filtration assembly.

[0028] Figure 2 A schematic diagram showing the separation of the upper end cap, reverse osmosis filter element, central tube, and lower end cap;

[0029] Figure 3 An exploded view of a reverse osmosis filtration unit;

[0030] Figure 4This is a schematic diagram of a reverse osmosis filtration unit from a cross-sectional view.

[0031] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0032] Figure 6 This is a schematic diagram of the reverse osmosis filtration assembly from another cross-sectional perspective.

[0033] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0034] Figure 8 This is a schematic diagram of the upper end cap.

[0035] Explanation of icon numbers:

[0036] label name label name 10 Reverse osmosis filtration components 700 Top cover 100 Filter bottle 810 lower end cover 110 Receiving cavity 811 First dividing section 120 Water passage gap 812 Second partition 130 Installation port 813 Water inlet channel 200 Reverse osmosis filter cartridge 814 Wastewater channel 300 elastic element 815 Water outlet channel 410 Inlet 816 First limiting section 420 water outlet 820 Top cover 430 Wastewater outlet 821 Connection part 500 Central tube 821a Through slot 510 Water passage 822 Second limiting part 600 sealing layer 823 Water passage

[0037] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0039] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0040] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0041] As people increasingly prioritize quality of life, water quality has become a major concern. Water purifiers with reverse osmosis capabilities are gaining popularity due to the fresher, more hygienic, and safer purified water they produce. Raw water typically has a high total dissolved solids (TDS). Reverse osmosis filters, aided by a booster pump, block a large number of ions in the raw water before reaching the osmosis membrane, ensuring that the TDS of the water passing through the membrane meets drinking water standards. However, if the water purifier is shut down for an extended period and then restarted, the first glass of purified water will have a higher TDS, resulting in lower quality water that does not meet the user's needs.

[0042] In view of this, the present invention proposes a reverse osmosis filter assembly 10, which is installed in a water purification device to filter the raw water passing through it, so that the water quality meets the user's needs and reduces the TDS value of the first cup of water, so that the user can experience a better taste of the first cup of water.

[0043] In embodiments of the present invention, such as Figures 1 to 4 As shown, the reverse osmosis filtration assembly 10 includes a filter bottle 100, a reverse osmosis filter element 200, a central tube 500, a sealing layer 600, and an elastic element 300. The reverse osmosis filter element 200 is disposed inside the filter bottle 100. The filter bottle 100 is provided with an inlet 410, an outlet 420, and a wastewater outlet 430. The reverse osmosis filter element 200 is sleeved on the central tube 500, and the central tube 500 has a water passage hole 510 communicating with the reverse osmosis filter element 200. A water passage gap 120 is provided between the filter element 200 and the filter bottle 100, and the central tube 500 is connected to the outlet 420 through the water passage gap 120; a sealing layer 600 is disposed on the outer periphery of the reverse osmosis filter element 200, and the sealing layer 600 is used to separate the reverse osmosis filter element 200 and the water passage gap 120; an elastic element 300 is disposed in the water passage gap 120, and the elastic element 300 shrinks in volume when subjected to water pressure, and expands back to its original state when the pressure is released.

[0044] It should be noted in advance that the vertical positional relationship shown in the attached diagram is only the position of the product in a certain state. In reality, the product is installed horizontally on the water circuit board along the axial direction of the filter bottle 100. Of course, it can also be installed vertically on the water circuit board along the axial direction of the filter bottle 100, as shown in the attached diagram. The filter bottle 100 has a receiving cavity 110, which is used to accommodate other components of the reverse osmosis filter assembly 10, ensuring that the reverse osmosis filter assembly 10 is not disturbed by external factors. The filter bottle 100 is connected to the outside only through the inlet 410, outlet 420, and wastewater outlet 430. Regulating valves are installed in the inlet 410, outlet 420, and wastewater outlet 430, which can be used to adjust the opening degree of the inlet 410, outlet 420, and wastewater outlet 430 to meet the actual operating requirements of the water purification equipment.

[0045] It should be noted that the central tube 500 is located inside the reverse osmosis filter element 200, which provides support for the inside of the reverse osmosis filter element 200, preventing the reverse osmosis filter element 200 from being deformed by large water pressure, thereby ensuring that the water outlet of the reverse osmosis filter element 200 is unobstructed.

[0046] A sealing layer 600 is disposed on the outer periphery of the reverse osmosis filter element 200. Considering that the inlet 410 is located at one end of the reverse osmosis filter element 200, the water entering the reverse osmosis filter element 200 enters from one end of the reverse osmosis filter element 200, and the inlet 410 is close to the outer periphery of the reverse osmosis filter element 200, the sealing layer 600 seals the outer periphery of the reverse osmosis filter element 200 to prevent the water to be filtered from flowing into the water passage gap 120 and contaminating the pure water, thereby achieving the technical solution. Specifically, the sealing layer 600 is made of glass frit impregnated with resin and then wound around the outer periphery of the reverse osmosis filter element 200. Finally, after the resin solidifies, it fills the gaps between the glass frits, allowing the sealing layer 600 to isolate the water passage gap 120 and the reverse osmosis filter element 200.

[0047] The elastic element 300 in this embodiment has the characteristic of shrinking in volume when subjected to pressure and restoring its volume when the pressure is removed. In this embodiment, the elastic element 300 is configured as an airbag structure, with a sealed membrane bag filled with a compressible gas. The compressible gas can be an inert gas or other compressible gas. The shape of the elastic element 300 can be sheet-like, block-like, or cylindrical, and is not specifically limited here.

[0048] This reverse osmosis filter assembly 10 is used in water purification equipment. In addition to the reverse osmosis filter element 200, a pre-filter assembly is also installed upstream of the inlet 410. This means that the water entering the inlet 410 is filtered through the pre-filter. During pre-filter filtration, the pre-filter adsorbs larger particles of impurities in the water, performing preliminary filtration of the raw water. Then, the RO membrane of the reverse osmosis filter element 200 filters out most of the salt ions in the water. Furthermore, a post-filter assembly is installed downstream of the reverse osmosis filter element 200. The filtered water, after passing through the reverse osmosis filter assembly 10, is then filtered again by the post-filter to remove color and adjust the taste before flowing from the tap to the user.

[0049] In this embodiment, the reverse osmosis filtration component 10 is integrated into the filter bottle 100. Alternatively, the pre-filter component, the post-filter component, and the reverse osmosis filtration component 10 can be integrated into the same filter bottle 100, or the pre-filter and the post-filter can be integrated into the same filter bottle 100.

[0050] It should be noted that in the water purification equipment, in addition to the reverse osmosis filter component 10, a booster pump is also installed to pressurize the water to be filtered entering the reverse osmosis filter element 200. This increases the efficiency of the RO membrane in filtering pure water. When the user starts to draw water, the reverse osmosis filter element 200 is in working mode, with the inlet 410, outlet 420, and wastewater outlet 430 all open, and the reverse osmosis filter element 200 continuously filters out pure water. When the user stops drawing water, the outlet 420 is immediately closed or gradually closed. At this time, the booster pump continues to pressurize, the inlet 410 remains open for a period of time, and the wastewater outlet 430 is adjusted by the regulating valve to drain through a small hole. The filter bottle 100 is in a high-pressure environment, so the air and elastic element 300 inside the filter bottle 100 are compressed under high pressure, making the amount of pure water in the central tube 500 and the water passage 120 higher than the amount of pure water when the air pressure inside the filter bottle 100 is balanced with the outside. When the booster pump stops working, the air pressure inside the filter bottle 100 is gradually restored due to the small hole of the wastewater outlet 430 regulating the air pressure. Consequently, the compressed air and elastic element 300 inside the filter bottle 100 also recover their volume. The pressure brought by the recovery of the volume of the air and elastic element 300 forces some of the pure water in the water passage gap 120 and the central tube 500 to flow back into the reverse osmosis filter element 200, thereby discharging a portion of the wastewater inside the reverse osmosis filter element 200.

[0051] This allows the proportion of pure water in the reverse osmosis filter cartridge 200 to increase and the proportion of wastewater to decrease. When the user takes the first cup of water next time, the TDS value will be lower, improving the water quality and taste of the first cup of water and meeting the user's needs for purified water.

[0052] The technical solution of this invention employs a pure water path simultaneously within the water passage gap 120 and the central pipe 500, and places the elastic element 300 within the water passage gap 120. When the elastic element 300 is compressed by the pressure of the booster pump, the water passage gap 120 can be filled with more pure water. When the booster pump is turned off, the elastic element 300 returns to its original volume, squeezing the excess pure water in the water passage gap 120 back into the reverse osmosis filter element 200. This discharges some of the wastewater from the reverse osmosis filter element 200, increases the TDS value of the water in the reverse osmosis filter element 200, and thus improves the taste of the first cup of water received by the user.

[0053] In one embodiment, please refer to Figure 3 and Figure 4 The elastic element 300 has a receiving cavity, which is filled with a compressible medium.

[0054] It should be noted that in this embodiment, the elastic element 300 is configured as an airbag structure, and a compressible medium is filled inside the elastic element 300. Considering that the airbag structure has good compressibility, the compressible medium is set as an inert gas, such as helium. Of course, other compressible gases and liquids are also within the range of compressible media in this elastic element 300.

[0055] In one embodiment, please continue to refer to Figure 4 The elastic element 300 is arranged around the outside of the reverse osmosis filter element 200.

[0056] It should be noted that, considering that the reverse osmosis filter element 200 is cylindrical and the filter bottle 100 is also cylindrical, the gap formed between the reverse osmosis filter element 200 and the filter bottle 100 is an annular region. In order to make the elastic element 300 have a larger volume, thereby giving the elastic element 300 more compressible volume, and thus allowing more pure water to flow back into the reverse osmosis filter element 200 when the elastic element 300 recovers its volume, the elastic element 300 is arranged around the outside of the reverse osmosis filter element 200, so that the shape of the elastic element 300 matches the shape of the reverse osmosis filter element 200.

[0057] Furthermore, in one embodiment, please continue to refer to... Figure 4 The elastic element 300 is cylindrical, and the length of the elastic element 300 is less than the length of the reverse osmosis filter element 200.

[0058] Considering that the elastic element 300 is disposed within the water passage 120, which guides pure water to flow out from the outlet 420, and that the elastic element 300 is cylindrical to match the shape of the water passage 120, if the length of the elastic element 300 is too long, it may block the water passage connecting the central pipe 500 and the outlet 420. Therefore, the length of the elastic element 300 must be less than the length of the reverse osmosis filter element 200. It should be noted that the length of the elastic element 300 refers to its axial length during contraction and expansion, and the length of the reverse osmosis filter element 200 refers to its axial length.

[0059] Furthermore, in one embodiment, please continue to refer to... Figure 4 The height of the elastic element 300 is L1, and the height of the reverse osmosis filter element 200 is L2. The L1 and L2 satisfy 1 / 3≤L1 / L2≤5 / 6.

[0060] As described in the above embodiments, the length of the elastic element 300 is less than the length of the reverse osmosis filter element 200. Considering that if the length of the elastic element 300 is too small, the volume that the elastic element 300 can be compressed will be small, this embodiment further limits the ratio of the length of the elastic element 300 to the length of the reverse osmosis filter element 200 to be greater than or equal to 1 / 3. In addition, the length of the elastic element 300 cannot be too long, otherwise the elastic element 300 may block the water passage connecting the water gap 120 to the central pipe 500 and the outlet 420. Therefore, this embodiment further limits the ratio of the length of the elastic element 300 to the length of the reverse osmosis filter element 200 to be less than or equal to 5 / 6.

[0061] In one embodiment, please refer to Figure 4 The reverse osmosis filtration assembly 10 also includes a lower end cap 810, the lower side of which is installed on the filter bottle 100, and the upper side of which is connected to the reverse osmosis filter element 200.

[0062] It should be noted that, in order to fix the reverse osmosis filter element 200, the reverse osmosis filtration assembly 10 proposed in this invention also includes a lower end cap 810. The lower side of the lower end cap 810 is installed on the filter bottle 100, so that the lower end cap 810 can be fixed to the filter bottle 100. The upper side of the lower end cap 810 is connected to the reverse osmosis filter element 200. The connection method here is adhesive bonding. In this way, one end of the reverse osmosis filter element 200 can be fixed to the lower end cap 810, avoiding the reverse osmosis filter element 200 from being deformed and misaligned due to water pressure impact, thereby extending the service life of the reverse osmosis filter element 200.

[0063] In one embodiment, please refer to Figure 4The lower end cover 810 is provided with a first partition 811 and a second partition 812. The first partition 811 and the second partition 812 divide the lower end cover 810 into an inlet channel 813, a wastewater channel 814 and an outlet channel 815. The raw water entering the inlet 410 flows into the reverse osmosis filter element 200 through the inlet channel 813. The wastewater in the reverse osmosis filter element 200 flows out from the wastewater outlet 430 through the wastewater channel 814. The filtered water flowing out from the water passage 120 flows out from the outlet 420 through the outlet channel 815.

[0064] The lower end cover 810 has a first partition 811 and a second partition 812 that are protruding. The first partition 811 and the second partition 812 divide the lower end cover 810 into a water inlet channel 813, a wastewater channel 814 and a water outlet channel 815. The water inlet 410, wastewater outlet 430 and water outlet 420 on the filter bottle 100 are respectively provided to correspond to the water inlet channel 813, wastewater channel 814 and water outlet channel 815 of the lower end cover 810.

[0065] Optionally, please refer to Figure 2 The lower end cap 810 has a first limiting portion 816 extending toward the reverse osmosis filter element 200, and the first limiting portion 816 is disposed around the outer periphery of the reverse osmosis filter element 200.

[0066] It should be noted that the lower end cover 810 is located at one end of the reverse osmosis filter element 200, so the lower end cover 810 has two opposite sides. The lower end cover 810 extends towards the side closer to the reverse osmosis filter element 200 to form a first limiting part 816. The first limiting part 816 is circumferentially disposed on the outer periphery of the reverse osmosis filter element 200, limiting and fixing it in the circumferential direction of the reverse osmosis filter element 200, preventing the reverse osmosis filter element 200 from being deformed by water pressure impact, and improving the service life of the reverse osmosis filter element 200.

[0067] In one embodiment, please refer to Figure 2 The reverse osmosis filtration assembly 10 also includes an upper end cover 820, the reverse osmosis filter element 200 is connected to the upper end cover 820, the middle of the upper end cover 820 is provided with a connecting section protruding towards the reverse osmosis filter element 200, and a through groove 821a is opened in the connecting section, the through groove 821a is connected to the flow path inside the central tube 500.

[0068] Specifically, the reverse osmosis filter element 200 assembly proposed in this invention also includes an upper end cover 820, which is used to fix the reverse osmosis filter element 200. The upper side of the upper end cover 820 is close to the inner wall of the top cover 710. The upper end cover 820 also has the function of guiding the pure water in the central tube 500 to the water passage gap 120. Therefore, a connecting section protruding towards the reverse osmosis filter element 200 is provided in the middle of the upper end cover 820. A through groove 821a is provided in the connecting section, through which the central tube 500 and the water passage gap 120 can be connected.

[0069] In one embodiment, please refer to Figure 5 The upper surface of the upper end cover 820 is recessed and provided with a water passage 823. One side of the water passage 823 is connected to the through groove 821a, and the other side of the water passage 823 is connected to the water passage gap 120.

[0070] As described in the above embodiments, a water passage 823 is provided at the bottom of the upper end cover 820. One side of the water passage 823 is connected to the through groove 821a, and the other side is connected to the water passage gap 120. Considering that the upper surface of the upper end cover 820 is circular, the number of water passages 823 can be one, two, or more. In this embodiment, four water passages 823 are provided, two of which are arranged in a straight line, and the other two are also arranged in a straight line. The included angle between two adjacent water passages 823 is 90°. Providing multiple water passages 823 can accommodate high-flow reverse osmosis filter components 10.

[0071] In one embodiment, please refer to Figure 2 The upper end cover 820 has a second limiting portion 822 extending toward the lower end cover 810, and the second limiting portion 822 is disposed around the outer periphery of the reverse osmosis filter element 200.

[0072] Specifically, the upper end cover 820 is located at one end of the reverse osmosis filter element 200, so the upper end cover 820 has two opposite sides. The upper end cover 820 extends towards the side closer to the reverse osmosis filter element 200 to form a second limiting part 822. The second limiting part 822 is circumferentially disposed on the outer periphery of the reverse osmosis filter element 200, limiting and fixing it in the circumferential direction of the reverse osmosis filter element 200, preventing the reverse osmosis filter element 200 from being deformed by water pressure impact, and improving the service life of the reverse osmosis filter element 200.

[0073] In one embodiment, please refer to Figure 4The sealing layer 600 is also disposed on the outer periphery of the lower end cover 810 and the upper end cover 820. It should be noted that, considering that the lower end cover 810 and the upper end cover 820 are bonded to the reverse osmosis filter element 200, the sealing layer 600 is also disposed on the outer periphery of the lower end cover 810 and the upper end cover 820. The specific arrangement is as follows: first, the reverse osmosis filter element 200 is bonded to the upper end cover 820 and the lower end cover 810 respectively, and then the sealing layer 600 is wrapped around the outer periphery of the upper end cover 820, the reverse osmosis filter element 200 and the lower end cover 810 to prevent raw water from seeping into the water passage 120 and contaminating the pure water circuit.

[0074] In one embodiment, please refer to Figure 4 The elastic element 300 is sleeved on the sealing layer 600. The elastic element 300 is spaced apart from the lower end cover 810, and the elastic element 300 is spaced apart from the upper end cover 820.

[0075] It should be noted that in the above embodiment, the length of the elastic element 300 is set to be less than the length of the reverse osmosis filter element 200, thereby preventing the elastic element 300 from blocking the water passage between the water passage gap 120 and the central pipe 500 and the outlet 420. Therefore, the elastic element 300 is sleeved on the sealing layer 600 to limit the relative position of the contraction collision element and prevent it from moving within the water passage gap 120 to block the water passage. Secondly, the sealing element is spaced from the upper end cover 820 and the lower end cover 810 respectively, further preventing the elastic element 300 from blocking the water passage.

[0076] In one embodiment, please refer to Figure 3 The reverse osmosis filtration assembly 10 also includes a top cover 700, and the top of the filter bottle 100 has an installation port 130, and the top cover 700 is installed in the installation port 130.

[0077] It should be noted that the top of the filter bottle 100 has an installation port 130 for placing other components such as the reverse osmosis filter element 200 into the filter bottle 100. The top cover 700 is installed on the installation port 130. The installation method can be that the top cover 700 is hinged to the filter bottle 100 and the filter bottle 100 is covered on the installation port 130, or the top cover 700 is glued to the filter bottle 100. In this embodiment, the installation port 130 is sealed by welding the top cover 700 to the filter bottle 100 to achieve a better seal between the filter bottle 100 and the top cover 700.

[0078] This invention also proposes a water purification device, which includes a reverse osmosis filter assembly 10. The specific structure of the reverse osmosis filter assembly 10 is as described in the above embodiments. Since this water purification device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The water purification device can be a water purifier, a water dispenser, a water softener / purifier combo machine, or a water purifier / heater combo machine, or other products with water purification functions.

[0079] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A reverse osmosis filtration component, characterized in that, include: A filter bottle, wherein the filter bottle is provided with an inlet, an outlet and a wastewater outlet; The reverse osmosis filter element is installed inside the filter bottle; The central tube is fitted with the reverse osmosis filter element. The central tube has a water passage hole that connects to the reverse osmosis filter element. There is a water passage gap between the reverse osmosis filter element and the filter bottle. The central tube is connected to the water outlet through the water passage gap. The water passage gap is used to guide pure water to flow out from the water outlet. A sealing structure is provided on the outer periphery of the reverse osmosis filter element, and the sealing structure is used to separate the reverse osmosis filter element from the water passage gap; An elastic element is disposed within the water passage gap. When the booster pump pressurizes, the elastic element contracts. When the booster pump stops pressurizing, the compressed elastic element inside the filter bottle expands and recovers, squeezing the pure water in the central tube and the water passage gap back into the reverse osmosis filter element. The elastic element is disposed around the outside of the reverse osmosis filter element.

2. The reverse osmosis filtration assembly as described in claim 1, characterized in that, The reverse osmosis filtration assembly also includes a lower end cap, the lower side of which is installed on the filter bottle, and the upper side of which is connected to the reverse osmosis filter element.

3. The reverse osmosis filtration assembly as described in claim 2, characterized in that, The lower end cover is provided with a first partition and a second partition. The first partition and the second partition separate the lower end cover into an inlet channel, a wastewater channel and an outlet channel. Raw water entering the inlet flows into the reverse osmosis filter element through the inlet channel. Wastewater in the reverse osmosis filter element flows out from the wastewater outlet through the wastewater channel. Filtered water flowing out from the water passage gap flows out from the outlet through the outlet channel.

4. The reverse osmosis filtration assembly as described in claim 3, characterized in that, The lower end cap has a first limiting portion extending toward the reverse osmosis filter element, the first limiting portion being disposed around the outer periphery of the reverse osmosis filter element.

5. The reverse osmosis filtration assembly as described in claim 4, characterized in that, The reverse osmosis filtration assembly also includes an upper end cover, the reverse osmosis filter element is connected to the upper end cover, the middle of the upper end cover is provided with a connecting section protruding towards the reverse osmosis filter element, the connecting section is provided with a through groove, and the through groove is connected to the flow path in the central tube.

6. The reverse osmosis filtration assembly as described in claim 5, characterized in that, The upper surface of the upper end cover is recessed and provided with a water passage. One side of the water passage is connected to the through groove, and the other side of the water passage is connected to the water passage gap.

7. The reverse osmosis filtration assembly as described in claim 6, characterized in that, The upper end cover has a second limiting portion extending toward the lower end cover, and the second limiting portion is disposed around the outer periphery of the reverse osmosis filter element.

8. The reverse osmosis filtration assembly as described in claim 7, characterized in that, A sealing layer is also provided on the outer periphery of the lower end cover and the upper end cover.

9. The reverse osmosis filtration assembly as described in claim 8, characterized in that, The elastic element is sleeved on the sealing layer, and there is a gap between the elastic element and the lower end cover, and there is a gap between the elastic element and the upper end cover.

10. The reverse osmosis filtration assembly as described in claim 1, characterized in that, The elastic element has a receiving cavity, which is filled with a compressible medium.

11. The reverse osmosis filtration assembly as described in claim 10, characterized in that, The length of the elastic element is less than the length of the reverse osmosis filter element.

12. The reverse osmosis filtration assembly as described in claim 11, characterized in that, The height of the elastic element is L1, and the height of the reverse osmosis filter element is L2. The heights of L1 and L2 satisfy 1 / 3 ≤ L1 / L2 ≤ 5 / 6.

13. The reverse osmosis filtration assembly as described in claim 1, characterized in that, The reverse osmosis filtration assembly also includes a top cover, and the top of the filter bottle has an installation port, to which the top cover is installed.

14. A water purification device, characterized in that, Includes the reverse osmosis filtration assembly as described in any one of claims 1 to 13.

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