Front-end water filter device and gas water heater using the same

Abstract

The present invention discloses a front-end water filtering device, which comprises a shell, a tubular filter element assembly and a water inlet valve assembly. The shell and the tubular filter element assembly are both arranged in a water storage device and the tubular filter element assembly is nested in the shell for filtering water. The water inlet valve assembly is installed on the outside of the water storage device and the shell and the tubular filter element assembly are detachably installed above the water inlet valve assembly. The present invention also discloses a gas water heater. The tubular filter element in the front-end water filtering device of the present invention has a large water filtering area, can effectively filter tap water and is not easy to be blocked, meets the demand for large flow water, and can be used for a long time. At the same time, the water inlet valve assembly of the front-end water filtering device can be detachably installed at the bottom of the tubular filter element assembly, which is convenient for observing whether it is blocked and can be easily disassembled and assembled, and is convenient for later cleaning or replacement of the filter element, which is healthy and environmentally friendly.

Description

Technical Field

[0001] The invention belongs to the technical field of gas water heaters, and in particular relates to a front-end water filtering device and a gas water heater using the same. Background Art

[0002] At present, water heaters on the market generally use simple filtering devices to protect the built-in water flow sensor of the water heater from getting stuck. After the water heater has been used for a long time, the small filter is very easy to get clogged, which greatly reduces the flow of tap water and affects the normal use of the water heater.

[0003] In addition, the filter is fixed inside the water inlet joint, which makes it difficult to observe whether it is blocked, and it is very inconvenient to install and disassemble and clean. On the other hand, the existing technology can only filter tap water simply, but cannot perform deep water purification, and cannot meet the needs of users for healthy and environmentally friendly water. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a front-end water filtering device, which makes it easy to observe whether it is blocked and can be disassembled and assembled conveniently, so as to facilitate later cleaning or replacement of the filter element, which is healthy and environmentally friendly.

[0005] Another object of the present invention is to provide a gas water heater.

[0006] The technical solution adopted by the present invention is:

[0007] A front-end water filtering device comprises a shell, a tubular filter element assembly and a water inlet valve assembly, wherein the shell and the tubular filter element assembly are both arranged in a water storage device and the tubular filter element assembly is nested in the shell for filtering water, and the water inlet valve assembly is installed on the outside of the water storage device and the shell and the tubular filter element assembly are detachably installed above the water inlet valve assembly.

[0008] Preferably, the outer shell includes a shell, a limiting ring, a stepped support plate, a first sealing ring and a first mounting assembly, the shell is a bottle-shaped structure with both ends open, the limiting ring is arranged on the inner side of the top end of the shell, the stepped support plate is regularly arranged on the inner wall of the shell, the first sealing ring is arranged on the outer side of the bottom end of the shell, and the first mounting assembly is arranged on the outer side of the bottom of the shell and is located above the first sealing ring for connecting to the casing of the gas water heater.

[0009] Preferably, the tubular filter element assembly includes a filter element bracket, a tubular filter element, an annular rubber pad and a positioning ring. The tubular filter element is sleeved on the outside of the filter element bracket, the annular rubber pad is detachably fixed on the top of the tubular filter element for fixing and sealing the tubular filter element, and the positioning ring is sleeved on the outside of the bottom of the filter element bracket for positioning the filter element bracket and passing water.

[0010] Preferably, the filter element holder is a cylindrical hollow shell with an open top and a closed bottom, and the filter element holder is provided with regularly arranged grille through holes, and second sealing rubber rings are provided at both upper and lower ends of the grille through holes.

[0011] Preferably, the positioning ring is provided with a plurality of water holes penetrating vertically.

[0012] Preferably, the outer shell includes a shell, a stepped support plate, a first sealing ring and a first mounting assembly, the shell is a bottle-shaped structure with both ends open, the stepped support plates are regularly arranged on the inner wall of the shell, the first sealing ring is arranged on the outside of the bottom end of the shell, and the first mounting assembly is arranged on the outside of the bottom of the shell and is located above the first sealing ring for connecting to the casing of the gas water heater.

[0013] Preferably, the tubular filter element assembly comprises a filter element bracket, a tubular filter element, an annular rubber pad and a positioning ring, the tubular filter element is sleeved on the outside of the filter element bracket, the annular rubber pad is detachably fixed on the top of the tubular filter element for fixing and sealing the tubular filter element, and the positioning ring is sleeved on the outside of the bottom of the filter element bracket for positioning and sealing the bottom of the filter element bracket.

[0014] Preferably, the filter element holder is a cylindrical hollow shell with a closed top and an open bottom, the filter element holder is provided with regularly arranged grille holes, second sealing rubber rings are provided at both upper and lower ends of the grille holes, and a third sealing ring is provided outside the positioning ring.

[0015] Preferably, the water inlet valve assembly also includes an external thread and a second mounting assembly. The water inlet valve assembly is an inverted "T"-shaped hollow structure with both ends open. An external thread is provided on the outside of the bottom through hole of the water inlet valve assembly, and a second mounting assembly is provided on the outside of the top through hole of the water inlet valve assembly.

[0016] A gas water heater comprises a front-end water filter device, a gas water heater body, a water inlet pipe, a water outlet pipe and fasteners, wherein the water inlet pipe and the water outlet pipe are arranged in the gas water heater body, the front-end water filter device is installed at one end of the water inlet pipe, and the fasteners are arranged on the outside of the gas water heater body for use in conjunction with the lower end of the front-end water filter device to thereby fix the front-end water filter device.

[0017] Compared with the prior art, the tubular filter element in the front-end water filtering device of the present invention has a large water filtering area, can effectively filter tap water and is not easy to clog, can meet the demand for large flow water, and can be used for a long time; at the same time, the water inlet valve assembly of the front-end water filtering device can be detachably installed at the bottom of the tubular filter element assembly, which is convenient for observing whether it is clogged and can be easily disassembled and assembled, which is convenient for later cleaning or replacement of the filter element, and is healthy and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1is a cross-sectional view of a front-end water filtering device provided in Embodiment 1 of the present invention;

[0019] Figure 2 is a cross-sectional view of the housing of the front-end water filtering device provided in Example 1 of the present invention;

[0020] Figure 3 is a cross-sectional view of a tubular filter element assembly of a front-end water filter device provided in Example 1 of the present invention;

[0021] Figure 4 is an exploded view of the front-end water filtering device provided in Example 1 of the present invention;

[0022] Figure 5 is a cross-sectional view of the housing of the front-end water filtering device provided in Embodiment 2 of the present invention;

[0023] Figure 6 is a cross-sectional view of a tubular filter element assembly of a front-end water filter device provided in Example 2 of the present invention;

[0024] Figure 7 is a cross-sectional view of a water inlet valve assembly of a front-end water filter device provided in Embodiment 1 or 2 of the present invention;

[0025] Figure 8 is a schematic structural diagram of a gas water heater provided in Embodiment 3 of the present invention;

[0026] Fig. 9 is a schematic diagram of replacing a tubular filter element assembly of a gas water heater provided in Embodiment 3 of the present invention;

[0027] Fig.10 It is a schematic diagram of the structure of the gas water heater provided in Example 4 of the present invention.

[0028] Description of Reference Numerals

[0029] 1-housing, 11-shell, 12-limiting ring, 13-step support plate, 14-first sealing ring, 15-first mounting assembly, 2-tubular filter element assembly, 21-filter element bracket, 211-grid through hole, 212-second sealing ring, 22-tubular filter element, 23-annular rubber pad, 24-positioning ring, 241-water hole, 242-third sealing ring, 3-water inlet valve assembly, 31-external thread, 32-second mounting assembly, 4-gas water heater body, 5-water inlet pipe, 6-water outlet pipe, 7-fastener. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] Example 1

[0032] Embodiment 1 of the present invention provides a front-end water filtering device, such as Figure 1 As shown, it includes a shell 1, a tubular filter element assembly 2 and a water inlet valve assembly 3, wherein the shell 1 and the tubular filter element assembly 2 are both arranged in a water storage device and the tubular filter element assembly 2 is nested in the shell 1 for filtering water, and the water inlet valve assembly 3 is installed on the outside of the water storage device and the shell 1 and the tubular filter element assembly 2 are detachably installed above the water inlet valve assembly 3.

[0033] In this way, by adopting the above structure, the tubular filter element in the front-end water filtering device of the present invention has a large water filtering area, can effectively filter tap water and is not easy to be blocked, meets the demand for large flow water, and can be used for a long time; at the same time, the water inlet valve assembly of the front-end water filtering device can be detachably installed at the bottom of the tubular filter element assembly, which is convenient for observing whether it is blocked and can be easily disassembled and assembled, which is convenient for later cleaning or replacement of the filter element, which is healthy and environmentally friendly.

[0034] like Figure 2 As shown, the housing 1 includes a housing 11, a limiting ring 12, a stepped support plate 13, a first sealing ring 14 and a first mounting assembly 15. The housing 11 is a bottle-shaped structure with two ends open. The limiting ring 12 is arranged on the inner side of the top of the housing 11. The stepped support plate 13 is arranged regularly on the inner wall of the housing 11. The first sealing ring 14 is arranged on the outer side of the bottom end of the housing 11. The first mounting assembly 15 is arranged on the outer side of the bottom of the housing 11 and above the first sealing ring 14 for connecting the casing of the gas water heater to facilitate disassembly and assembly. The first mounting assembly 15 includes a first outer flange and a first threaded hole arranged on the first outer flange.

[0035] like Figure 3 and 4 As shown, the tubular filter element assembly 2 includes a filter element support 21, a tubular filter element 22, an annular rubber pad 23 and a positioning ring 24. The tubular filter element 22 is sleeved on the outside of the filter element support 21. The annular rubber pad 23 is detachably fixed to the top of the tubular filter element 22 for fixing and sealing the tubular filter element 22. The positioning ring 24 is sleeved on the outside of the bottom of the filter element support 21 for positioning the filter element support 21 and passing water. Among them, the annular rubber pad 23 is connected to the filter element support 21 in a snap-fit ​​manner to prevent the tubular filter element 22 from loosening.

[0036] Among them, the tubular filter element 22 is a hollow cylinder, which is formed by bending and connecting filter screens with a mesh size greater than 60, or is made of other filtering materials, such as one or more of PP cotton, activated carbon, etc., to achieve different filtering effects. Different tubular filter elements 22 can also be personalized according to customer needs.

[0037] The filter element support 21 is a cylindrical hollow shell with an open top and a closed bottom. The filter element support 21 is provided with regularly arranged grille holes 211. The upper and lower ends of the grille holes 211 are provided with second sealing rubber rings 212 to block the gap between the tubular filter element 22 and the filter element support 21, ensuring that the tap water flowing through the tubular filter element assembly 2 is effectively filtered. The positioning ring 24 is provided with a plurality of water holes 241 that pass through from top to bottom, and the water holes 214 are distributed in a circumference.

[0038] like Figure 7 As shown, the water inlet valve assembly 3 further includes an external thread 31 and a second mounting assembly 32. The water inlet valve assembly 3 is an inverted "T"-shaped hollow structure with both ends open. The outer side of the bottom through hole of the water inlet valve assembly 3 is provided with an external thread 31, and the outer side of the top through hole of the water inlet valve assembly 3 is provided with a second mounting assembly 32 for connecting to the housing of the gas water heater. The second mounting assembly 32 includes a second external flange and a second threaded hole provided on the second external flange.

[0039] The water inlet valve assembly 3 of the embodiment of the present invention is located outside the water heater casing. The water inlet valve assembly 3 can be removed by unscrewing the fastener 7 at the second outer flange, and the tubular filter element assembly 2 can also be removed for cleaning or replacement, which is convenient and quick.

[0040] When in use, tap water enters the inner cavity of the front-end water filtering device from the bottom end of the water inlet valve assembly 3, flows into the inner cavity of the outer shell 1 through the filter element bracket 21 and the water hole 241, then flows from the outside of the tubular filter element assembly 2 to the inside and is filtered by the tubular filter element 22 on the tubular filter element assembly 2, and finally flows out from the open mouth at the top end of the inner part of the tubular filter element assembly 2 and the open mouth at the upper end of the outer shell 1.

[0041] Example 2

[0042] Embodiment 2 of the present invention provides a front-end water filtering device, such as Figure 5 As shown, the housing 1 includes a housing 11, a stepped support plate 13, a first sealing ring 14 and a first mounting assembly 15. The housing 11 is a bottle-shaped structure with both ends open. The stepped support plates 13 are regularly arranged on the inner wall of the housing 11. The first sealing ring 14 is arranged on the outside of the bottom end of the housing 11. The first mounting assembly 15 is arranged on the outside of the bottom of the housing 11 and above the first sealing ring 14 for connecting to the casing of the gas water heater for easy disassembly and assembly. The first mounting assembly 15 includes a first outer flange and a first threaded hole arranged on the first outer flange.

[0043] like Figure 6As shown, the tubular filter element assembly 2 includes a filter element bracket 21, a tubular filter element 22, an annular rubber pad 23 and a positioning ring 24. The tubular filter element 22 is sleeved on the outside of the filter element bracket 21. The annular rubber pad 23 is detachably fixed to the top of the tubular filter element 22 for fixing and sealing the tubular filter element 22. The positioning ring 24 is sleeved on the outside of the bottom of the filter element bracket 21 for positioning and sealing the bottom of the filter element bracket 21. The stepped support plate 13 supports the positioning ring 24 at the bottom end of the tubular filter element assembly 2 and the annular rubber pad 23 at the top end respectively. The inner cavity of the housing 1 is connected to the through hole 1 at the top end of the housing 1 through the regularly arranged stepped support plates 13.

[0044] The filter element holder 21 is a cylindrical hollow shell with a closed top and an open bottom. The filter element holder 21 is provided with regularly arranged grille through holes 211. Second sealing rubber rings 212 are provided at both upper and lower ends of the grille through holes 211. A third sealing ring 242 is provided on the outer side of the positioning ring 24 for sealing the filter element holder 21 and the bottom of the shell 1.

[0045] like Figure 7 As shown, the water inlet valve assembly 3 further includes an external thread 31 and a second mounting assembly 32. The water inlet valve assembly 3 is an inverted "T"-shaped hollow structure with both ends open. The outer side of the bottom through hole of the water inlet valve assembly 3 is provided with an external thread 31, and the outer side of the top through hole of the water inlet valve assembly 3 is provided with a second mounting assembly 32 for connecting to the housing of the gas water heater. The second mounting assembly 32 includes a second external flange and a second threaded hole provided on the second external flange.

[0046] The water inlet valve assembly 3 of the embodiment of the present invention is located outside the water heater casing. The water inlet valve assembly 3 can be removed by unscrewing the fastener 7 at the second outer flange of the water inlet, and the tubular filter element assembly 2 can be removed for cleaning or replacement, which is convenient and quick.

[0047] When in use, tap water enters the front-end water filtering device from the bottom end of the water inlet valve assembly 3, flows into the inner cavity of the tubular filter element assembly 2 through the through hole at the bottom end of the filter element bracket 21, then flows from the inside of the tubular filter element assembly 2 to the outside and is filtered by the tubular filter element 22 on the tubular filter element assembly 2, and finally flows out from the outside of the tubular filter element assembly 2 through the open port at the inner top end of the outer shell 1.

[0048] Example 3

[0049] Embodiment 3 of the present invention provides a gas water heater according to embodiment 1, such as Figure 8 and 9As shown, it includes the front-end water filtering device, a gas water heater body 4, a main water pipe 5 and a fastener 6. The gas water heater body 4 is provided with a main water pipe 5, and the main water pipe 5 includes an inlet pipe 51 and an outlet pipe 52. The front-end water filtering device is installed at one end of the inlet pipe 51. The fastener 6 is arranged on the outside of the gas water heater body 4 for use with the lower end of the front-end water filtering device to fix the front-end water filtering device.

[0050] The front-end water filter device in the application embodiment of the gas water heater has the tubular filter element assembly 2 and the housing 1 installed inside the gas water heater body 4, the bottom through hole of the housing 1 passes through the casing of the gas water heater body 4, and the first outer flange on the housing 1 is in close contact with the inner wall of the casing of the gas water heater body 4, and the top through hole of the housing 1 is connected to the water heater water inlet pipe 5. The top through hole of the water inlet valve assembly 3 is connected to the bottom through hole of the housing 1, and sealed by the first sealing ring 14; the second outer flange at the top of the water inlet valve assembly 3 is in close contact with the outer wall of the casing of the gas water heater body 4, and the fastener 7 is used to pass through the second threaded hole of the second outer flange and connect with the first threaded hole of the corresponding first outer flange of the housing 1, so as to fix the front-end water filter device of the present invention on the casing of the gas water heater body 4.

[0051] When in use, the through hole at the bottom end of the water inlet valve assembly 3 and the external thread 31 can serve as the water inlet joint of the gas water heater. Tap water flows in from the through hole at the bottom end of the water inlet valve assembly 3, i.e., the water inlet joint, passes through the filter element bracket 21 and the water hole 241 and flows into the inner cavity of the shell 1. After being filtered by the tubular filter element 22, it finally flows into the water inlet pipe 5 of the gas water heater from the through hole at the top end of the filter element bracket 21.

[0052] Example 4

[0053] Embodiment 4 of the present invention provides a gas water heater according to embodiment 2, such as Fig.10 As shown, the difference from the above-mentioned embodiment 3 is that the gas heater water heater uses the front-end water filtering device in embodiment 2, and the assembly of the tubular filter element assembly 2 and the outer shell 1 is integrally installed on the water inlet pipe 5 inside the gas water heater body 4, and then the water inlet valve assembly 3 is connected and fixed to the assembly by fasteners 7.

[0054] When in use, tap water flows in from the bottom through hole of the water inlet valve assembly 3, i.e., the water inlet joint, flows into the inner cavity of the tubular filter element assembly 2 through the bottom through hole of the filter element bracket 21, is filtered by the tubular filter element 22 and flows into the inner cavity of the outer shell 1, and finally flows into the water inlet pipe 5 of the gas water heater from the top through hole 11 of the outer shell 1.

[0055] The front-end water filtering device in the gas water heater of the present invention is installed at the bottom of the gas water heater casing, wherein the tubular filter element of the front-end water filtering device has a large water filtering area, can effectively filter tap water and is not easy to be blocked, meets the large flow water demand, and can be used for a long time; at the same time, the water inlet valve assembly of the front-end water filtering device can be detachably installed at the bottom of the tubular filter element assembly, and can also be detachably installed at the bottom of the gas water heater, which is convenient for observing whether it is blocked and can be convenient for disassembly and assembly, and is convenient for later cleaning or replacement of the filter element, which is healthy and environmentally friendly; in addition, the material of the tubular filter element has a variety of choices, which can provide customers with personalized front-end water filtering devices that meet customer needs and improve customer experience.

[0056] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A front-end water filtering device, characterized in that: The invention comprises a housing (1), a tubular filter element assembly (2) and a water inlet valve assembly (3); the housing (1) and the tubular filter element assembly (2) are both arranged in a water storage device, and the tubular filter element assembly (2) is nested in the housing (1) for filtering water; the water inlet valve assembly (3) is mounted on the outside of the water storage device, and the housing (1) and the tubular filter element assembly (2) are detachably mounted above the water inlet valve assembly (3); the tubular filter element assembly (2) comprises a filter element support (21) and a tubular filter element (22); the tubular filter element (22) is sleeved on the outside of the filter element support (21); when in use, the filter element support (21) is a cylindrical hollow shell with a sealed top end and an open bottom end, or a cylindrical hollow shell with an open top end and a sealed bottom end, so that the shell and the water inlet valve assembly (3) can be connected to the water heater; The tubular filter element assembly (2) further comprises an annular rubber pad (23) and a positioning ring (24); the annular rubber pad (23) is detachably fixed to the top end of the tubular filter element (22) for fixing and sealing the tubular filter element (22); the positioning ring (24) is sleeved on the outside of the bottom of the filter element bracket (21); The filter element support (21) is provided with regularly arranged grille through holes (211), and second sealing rubber rings are provided at both upper and lower ends of the grille through holes (211); The water inlet valve assembly (3) comprises a second mounting assembly (32), and the second mounting assembly (32) comprises a second outer flange.

2. The front-end water filtering device according to claim 1, characterized in that: The housing (1) comprises a housing (11), a limiting ring (12), a stepped support plate (13), a first sealing ring (14) and a first mounting assembly (15); the housing (11) is a bottle-shaped structure with two ends open; the limiting ring (12) is arranged on the inner side of the top end of the housing (11); the stepped support plate (13) is arranged on the inner wall of the housing (11) in a regularly arranged manner; the first sealing ring (14) is arranged on the outer side of the bottom end of the housing (11); and the first mounting assembly (15) is arranged on the outer side of the bottom end of the housing (11) and is located above the first sealing ring (14) for connecting to a casing of a gas water heater.

3. The front-end water filtering device according to claim 1, characterized in that: The positioning ring (24) is sleeved on the outside of the bottom of the filter element support (21) and is used for positioning the filter element support (21) and passing water.

4. The front-end water filtering device according to claim 3, characterized in that: The positioning ring (24) is provided with a plurality of water holes (241) penetrating vertically.

5. The front-end water filtering device according to claim 1, characterized in that: The housing (1) comprises a shell (11), a stepped support plate (13), a first sealing ring (14) and a first mounting assembly (15); the shell (11) is a bottle-shaped structure with two ends open; the stepped support plate (13) is regularly arranged on the inner wall of the shell (11); the first sealing ring (14) is arranged on the outside of the bottom end of the shell (11); and the first mounting assembly (15) is arranged on the outside of the bottom of the shell (11) and is located above the first sealing ring (14) for connecting to a casing of a gas water heater.

6. The front-end water filtering device according to claim 1, characterized in that: The positioning ring (24) is sleeved on the outer side of the bottom of the filter element support (21) to position and seal the bottom of the filter element support (21).

7. The front-end water filtering device according to claim 6, characterized in that: A third sealing ring (242) is arranged outside the positioning ring (24).

8. The front-end water filtering device according to any one of claims 1 to 7, characterized in that: The water inlet valve assembly (3) further comprises an external thread (31); the water inlet valve assembly (3) is an inverted "T"-shaped hollow structure with both ends open; the external thread (31) is arranged on the outside of the bottom through hole of the water inlet valve assembly (3); and the second mounting assembly (32) is arranged on the outside of the top through hole of the water inlet valve assembly (3).

9. A gas water heater, characterized in that: It comprises a front-end water filter device as claimed in any one of claims 1 to 8, a gas water heater body (4), a water inlet pipe (5), a water outlet pipe (6) and a fastener (7), wherein the water inlet pipe (5) and the water outlet pipe (6) are arranged in the gas water heater body (4), the front-end water filter device is installed at one end of the water inlet pipe (5), and the fastener (7) is arranged on the outside of the gas water heater body (4) for use in conjunction with the lower end of the front-end water filter device to thereby fix the front-end water filter device.

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