Front water treatment device and water heater

Abstract

The invention discloses a front water treatment device and a water heater. The front water treatment device comprises a valve body, the valve body is of a cylindrical structure with two open ends, one port of the valve body is a connecting port, the other port of the valve body is a dismounting port, the connecting port and the dismounting port are oppositely arranged, a three-way structure is formed on the side wall of the valve body, and a water inlet connecting pipe and a water outlet connecting pipe are formed at the two ends, located outside the valve body, of the three-way structure respectively; the filter element is arranged in the filter bottle, the filter element is provided with an inlet and an outlet, and the filter element is configured to filter water input from the inlet and output the water from the outlet; the filter bottle is arranged on the connecting port, the filter element penetrates through the valve body through the dismounting port and extends into the filter bottle, and the middle pipe is inserted into the water inlet connecting pipe. Through the integrated design of a valve body water inlet and outlet flow path in the front-mounted water treatment device, the overall size of the front-mounted water treatment device is reduced, and the filter element can be independently disassembled so as to facilitate disassembly, assembly and maintenance of the front-mounted water treatment device.

Description

Technical Field

[0001] The invention belongs to the technical field of household appliances, and in particular relates to a pre-water treatment device and a water heater. Background Art

[0002] At present, water heaters are household appliances commonly used in people's daily lives. During the use of the water heater, water in the tap water pipe enters the water heater through the water inlet pipe to be heated, and then the hot water is output from the water outlet pipe.

[0003] During the use of the water heater, the water supplied by the tap water pipe in the user's home contains sand and other debris. Therefore, a conventional water heater is provided with a filter at the water inlet pipe to filter the water entering the water inlet pipe. Chinese patent publication number CN 208893734 U discloses a combined water heater pre-filter, in which a filter bottle and a filter element are provided on the filter head, and the filter element is wrapped by the filter bottle.

[0004] However, in the actual maintenance process, when the filter element needs to be maintained, the filter bottle must be removed before the filter element can be removed; and an independent water flow path needs to be configured on the filter head, resulting in a large overall volume. In view of this, how to design a technology that facilitates disassembly and maintenance and reduces the overall volume of the filter is a technical problem to be solved by the present invention. Summary of the invention

[0005] The present invention provides a pre-water treatment device and a water heater. The overall volume of the pre-water treatment device is reduced by integrating the inlet and outlet water flow paths of the valve body in the pre-water treatment device. In addition, the filter element can be disassembled separately to facilitate the disassembly, assembly and maintenance of the pre-water treatment device.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: In one aspect, the present invention provides a pre-water treatment device, comprising: A valve body, wherein the valve body is a cylindrical structure with openings at both ends, one end of the valve body is a connection port, and the other end of the valve body is a disassembly port, the connection port and the disassembly port are arranged in back-to-back relation, and a three-way structure is formed on the side wall of the valve body, and two ends of the three-way structure located outside the valve body respectively form a water inlet connection pipe and a water outlet connection pipe; A filter element, the filter element having an inlet and an outlet, the filter element being configured to filter water input from the inlet and output water from the outlet; Filter bottle; Intermediate tube; In which, the filter bottle is arranged on the connecting port, the filter element passes through the valve body and extends into the filter bottle via the disassembly and assembly port, the intermediate tube is inserted into the water inlet connecting pipe, the outer end of the intermediate tube is sealed and connected with the inner tube wall of the water inlet connecting pipe, the inner end of the intermediate tube extends into the interior of the valve body, an auxiliary flow channel is formed between the outer tube wall of the intermediate tube and the inner tube wall of the water inlet connecting pipe, the water inlet connecting pipe is connected with the inlet through the intermediate tube, and the water outlet connecting pipe is connected with the outlet through the auxiliary flow channel.

[0007] An integrated three-way structure is formed on the valve body, wherein the three-way structure is integrated with an inlet connecting pipe and an outlet connecting pipe. At the same time, an intermediate pipe is built into the inlet connecting pipe to achieve isolation treatment of the inlet and outlet water, thereby realizing an integrated design of the inlet and outlet water flow paths to reduce the overall volume of the pre-water treatment device. Furthermore, since the two ports of the valve body are respectively installed with the filter bottle and the filter element, when the filter element needs to be removed, it is only necessary to remove the filter element from the disassembly port of the valve body, so that the filter element can be disassembled without removing the filter bottle, thereby facilitating disassembly and maintenance to improve ease of use.

[0008] In one embodiment of the present application, an annular protrusion structure is formed on the outer tube wall of the outer end portion of the intermediate tube, and a sealing ring is provided between the annular protrusion structure and the inner tube wall of the water inlet connecting pipe.

[0009] In one embodiment of the present application, a plurality of spaced-apart support ribs are provided on the outer tube wall of the intermediate tube, and the support ribs are against the inner tube wall of the water inlet connecting pipe.

[0010] In one embodiment of the present application, a positioning support ring is provided on the inner tube wall of the water inlet connecting pipe, and the supporting rib rests on the positioning support ring.

[0011] In one embodiment of the present application, at least one elastic stopper is disposed on the outer tube wall of the inner end of the intermediate tube, a first end of the elastic stopper is disposed on the intermediate tube, and a second end of the elastic stopper extends obliquely toward the outer end of the intermediate tube and away from the outer tube wall of the intermediate tube; The first end and the second end of the elastic limiting member are arranged back to back, and the second end of the elastic limiting member is clamped on the positioning support ring.

[0012] In one embodiment of the present application, it also includes: A water divider, the water divider is annular in structure, an annular spacer is arranged on the outer circumference of the water divider, the outer circumference of the water divider forms a first water flow area on one side of the annular spacer, and the outer circumference of the water divider forms a second water flow area on the other side of the annular spacer; Wherein, the filter element also passes through the water distributor, the inner pipe opening of the intermediate pipe is connected with the inlet through the first water flow area, and the auxiliary flow channel is connected with the outlet through the second water flow area.

[0013] In one embodiment of the present application, the annular spacer is provided with an inserting portion, the inserting portion is located in the second water flow area, the inserting portion is provided with an inserting port, and a through opening of the annular spacer that penetrates the annular spacer is provided on the side of the inserting port; The inner end of the intermediate tube is sealed and inserted into the insertion port, and the inner tube opening of the intermediate tube is connected to the first water flow area through the through opening.

[0014] In one embodiment of the present application, the edge of the annular spacer is further provided with a flange structure, the flange structure extends the annular spacer in the direction away from the second water flow area, a first annular water groove is formed between the flange structure and the water divider, and the first annular water groove forms the first water flow area; The second water flow area is a second annular water groove formed on the outer periphery of the water divider, and first sealing rings are respectively arranged on both sides of the second annular water groove, wherein one of the first sealing rings is squeezed between the outer wall of the water divider and the inner wall of the installation cavity, and the other first sealing ring is squeezed between the annular spacer and the inner wall of the installation cavity.

[0015] In one embodiment of the present application, the inlet is provided at one end of the filter element, the outlet is provided at the other end of the filter element, two second sealing rings are provided on the filter element, the outlet is located between the two second sealing rings, the filter element is inserted into the water divider, and the second sealing ring is squeezed between the filter element and the water divider.

[0016] The present application also provides a water heater, including a water heater body, on which a water inlet pipe and a water outlet pipe are arranged, and also includes the above-mentioned pre-water treatment device, wherein the water outlet connecting pipe of the pre-water treatment device is connected to the water inlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a structural schematic diagram of an embodiment of a pre-water treatment device of the present invention; Figure 2 for Figure 1An assembly cross-sectional view of an embodiment of a pre-water treatment device; Figure 3 for Figure 1 Schematic diagram of the structure of the middle valve body; Figure 4 for Figure 1 Assembly drawing of the middle valve body and water distributor; Figure 5 for Figure 4 A partial enlarged schematic diagram of the middle A area; Figure 6 for Figure 2 One of the structural diagrams of the middle splitter; Figure 7 for Figure 2 The second structural diagram of the middle diverter; Figure 8 for Figure 2 Assembly diagram of the middle filter element; Fig. 9 for Figure 8 Cross-sectional view of the middle filter element; Fig.10 for Figure 8 Exploded view of the middle filter element; Fig.11 is an assembly cross-sectional view of another embodiment of the pre-water treatment device; Fig.12 for Fig.11 A partial enlarged schematic diagram of the middle B area; Fig.13 for Figure 2 One of the structural diagrams of the middle intermediate tube; Fig.14 for Figure 2 The second schematic diagram of the structure of the middle intermediate pipe; Fig.15 for Figure 2 The third structural diagram of the middle intermediate pipe; Fig.16 One of the structural schematic diagrams of an embodiment of the water heater of the present invention; Fig.17 for Fig.16 Back view in; Fig.18 A schematic diagram of the structure of a water heater of the present invention in accordance with an embodiment of the second; Fig.19 for Fig.18 Back view of the .

[0019] Reference numerals: 100, water heater body; 200, water inlet pipe; 300, water outlet pipe; 400, decorative cover; 500, pre-water treatment device; 1. Valve body; 10. Three-way structure; 11. Water inlet connecting pipe; 12. Water outlet connecting pipe; 13. Connecting port; 14. Disassembly port; 15. Inner flange; 16. Second guide slope; 2. filter element; 21. housing; 22. core body; 23. permanent magnet; 24. filter mesh; 211. cylinder; 217. flow-blocking ribs; 218. notch structure; 219. mounting groove; 210. knob; 2111. first connection part; 2112. positioning surface; 2113. plug; 2101. second connection part; 2102. mounting slot; 2103. positioning ribs; 2104. pick; 2105. decorative cap; 201. inlet; 202. outlet; 3. Filter bottle; 31. Disassembly and assembly of ribs; 4. middle tube; 41. recessed structure; 42. annular raised structure; 43. supporting ribs; 44. elastic limiter; 5. Water distributor; 51. Annular spacer; 52. First water flow area; 53. Second water flow area; 54. Connecting part; 55. Connecting port; 56. Through-port; 57. Through-port; 58. Flanging structure; 59. Slot; 591. First guide slope. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0024] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0025] like Figure 1-Figure 10 As shown, an embodiment of the present application provides a pre-water treatment device 500, which includes: A valve body 1, wherein the valve body is a cylindrical structure with openings at both ends, and an installation cavity is formed inside the valve body; one end of the valve body is a connection port 13, and the other end of the valve body is a disassembly port 14, and the connection port and the disassembly port are arranged in opposite directions, and a three-way structure 10 is formed on the side wall of the valve body, and the two ends of the three-way structure located outside the valve body respectively form a water inlet connection pipe 11 and a water outlet connection pipe 12; A filter element 2, wherein the filter element has an inlet 201 and an outlet 202, and the filter element is configured to filter water input from the inlet and output water from the outlet; Filter bottle 3; Intermediate pipe 4; In which, the filter bottle is arranged on the connecting port, the filter element passes through the valve body and extends into the filter bottle via the disassembly and assembly port, the intermediate tube is inserted into the water inlet connecting pipe, the outer end of the intermediate tube is sealed and connected with the inner tube wall of the water inlet connecting pipe, the inner end of the intermediate tube extends into the interior of the valve body, an auxiliary flow channel is formed between the outer tube wall of the intermediate tube and the inner tube wall of the water inlet connecting pipe, the water inlet connecting pipe is connected with the inlet through the intermediate tube, and the water outlet connecting pipe is connected with the outlet through the auxiliary flow channel.

[0026] Specifically, the intermediate tube 4 is assembled into the water inlet connecting tube 11, the filter bottle 3 is installed on the connecting port 13, the filter element 2 is assembled into the disassembly port 14 and extends into the filter bottle 3 through the tube installation cavity. Among them, the communication port 112 formed on the side wall of the valve body is used to connect the three-way structure 10 with the installation cavity of the valve body 1, and the intermediate tube 4 arranged in the water inlet connecting tube 11 passes through the communication port 112 and extends into the installation cavity of the valve body 1.

[0027] In order to meet the requirements of water inlet and outlet inside the valve body 1 and meet the requirements of compact and miniaturized installation design, a three-way structure 10 is formed on the side wall of the valve body 1. One end of the three-way structure 10 is formed on the side wall of the valve body 1, and the remaining two exposed ends respectively form the water inlet connecting pipe 11 and the water outlet connecting pipe 12. The water inlet connecting pipe 11 and the water outlet connecting pipe 12 are arranged crosswise.

[0028] Among them, the intermediate tube 4 is arranged in the water inlet connecting tube 11, the outer end of the intermediate tube 4 is sealed and connected to the inner tube wall of the water inlet connecting tube 11, the water inlet of the water inlet connecting tube 11 is connected to the intermediate tube 4, and the inner end of the intermediate tube 4 extends into the installation cavity; an auxiliary flow channel 111 is formed between the outer tube wall of the intermediate tube 4 and the inner tube wall of the water inlet connecting tube 11, the water outlet connecting tube 12 is connected to the outlet of the filter element 2 through the auxiliary flow channel 111, and the inner tube mouth of the intermediate tube 4 is connected to the inlet of the filter element 2.

[0029] The water inlet connecting pipe 11 and the water outlet connecting pipe 12 on the valve body 1 must meet the requirements of water inlet and outlet, and by arranging the intermediate pipe 4 in the water inlet connecting pipe 11, the intermediate pipe 4 can form an auxiliary flow channel 111 with the inner pipe wall of the water inlet connecting pipe 11. The three-way structure 10 formed by the valve body 1 enables the auxiliary flow channel 111 and the water outlet connecting pipe 12 to communicate with each other.

[0030] The auxiliary flow channel 111 is formed in the water inlet connecting pipe 11 by using the intermediate pipe 4 to meet the connection requirement between the water outlet connecting pipe 12 and the water outlet cavity, so that the overall structure of the valve body 1 is more compact and small, thereby meeting the miniaturized design requirements.

[0031] At the same time, the two ends of the valve body are open structures, and the filter element 2 is inserted into the installation cavity through the disassembly port 14 and extends into the filter bottle 3. During use, when the filter element 2 needs to be disassembled for maintenance or replacement, the filter element 2 can be disassembled from the valve body 1 through the disassembly port 14, and there is no need to disassemble the filter bottle 3 additionally. In this way, the disassembly process can be effectively simplified to improve the efficiency of disassembly and maintenance, thereby improving user convenience.

[0032] In one embodiment of the present application, the pre-water treatment device 500 further includes a water divider 5, the water divider 5 is annular in structure, and an annular spacer 51 is provided on the outer circumference of the water divider 5, and the annular spacer 51 is divided into a first water flow area 52 and a second water flow area 53 at intervals on the outer circumference of the water divider 5; The water divider 5 is arranged in the installation cavity, and a water inlet cavity is formed between the first water flow area 52, the installation cavity, the filter element 2 and the filter bottle 3. A water outlet cavity is formed between the second water flow area 53 and the installation cavity. The water inlet cavity and the water outlet cavity are separated by the annular spacer 51.

[0033] Specifically, the water divider 5 arranged in the installation cavity of the valve body 1 is used to realize the separation of the water outlet cavity and the water inlet cavity formed in the installation cavity of the valve body 1. To this end, after the water divider 5 is installed in the installation cavity of the valve body 1, the annular spacer 51 is located on one side of the connecting port 112, so that the water inlet cavity and the water outlet cavity are separated in the installation cavity of the valve body 1.

[0034] In order to meet the requirement that the water inlet cavity and the water outlet cavity are connected to the water inlet connecting pipe 11 and the water outlet connecting pipe 12 respectively, a first water flow area 52 and a second water flow area 53 are formed on both sides of the annular spacer 51 respectively.

[0035] The water flowing from the water inlet connecting pipe 11 through the intermediate pipe 4 into the installation cavity of the valve body 1 flows through the first water flow area 52 and then enters the filter bottle 3 and the filter element 2 for filtering.

[0036] The water filtered by the filter element 2 flows from the second flow area to the communication port 112 , and flows from the outer wall of the intermediate pipe 4 into the water outlet connecting pipe 12 through the auxiliary flow channel 111 .

[0037] In some embodiments, the annular spacer 51 is provided with a plug-in portion 54, the plug-in portion 54 is located in the second water flow area 53, the plug-in portion 54 is provided with a plug-in port 55 arranged opposite to the communication port 112, and a through port 56 of the annular spacer 51 penetrating the annular spacer 51 is provided on the side of the plug-in port 55; The inner end of the intermediate tube 4 is sealed and inserted into the insertion port 55 , and the inner tube opening of the intermediate tube 4 is connected to the water inlet cavity through the through opening 56 .

[0038] Specifically, since both the inlet and outlet water need to enter and exit through the connecting port 112 on the valve body 1, in order to separate the inlet and outlet water flows, a plug-in portion 54 is provided on the annular spacer 51, and the plug-in port 55 formed on the plug-in portion 54 is used to connect the pipe opening of the inner end portion of the intermediate pipe 4, and the through-port 56 provided on the side of the plug-in port 55 can penetrate the annular spacer 51, thereby allowing the second water flow area 53 to communicate with the plug-in port 55 through the through-port 56.

[0039] During the assembly process, the inner end of the intermediate tube 4 is inserted into the plug-in port 55 so that the intermediate tube 4 is connected to the second water flow area 53 through the through-port 56, and the intermediate tube 4 and the plug-in port 54 cooperate with each other so that the inner end of the intermediate tube 4 can be isolated from the first water flow area 52, thereby meeting the effective isolation between the water inlet cavity and the water outlet cavity.

[0040] In addition, by configuring the plug-in portion 54 on the annular spacer portion 51, the flow requirement of the outlet water flow can be better met by the water outlet connecting pipe 12 using the internal flow channel of the water inlet connecting pipe 11. At the same time, it is also convenient for the overall assembly process of the pre-water treatment device 500 to effectively connect the inner end of the intermediate tube 4 to the water inlet cavity while also being effectively isolated from the water outlet cavity, thereby facilitating the rapid and accurate assembly of the pre-water treatment device 500.

[0041] In another embodiment, for the water outlet cavity, since the end of the filter element 2 having the outlet 202 is inserted in the water divider 5, in order to allow the water output from the filter element 2 to smoothly enter the water outlet cavity, a through hole 57 can be further provided on the water divider 5, and the through hole 57 is located in the second water flow area 53.

[0042] Specifically, the filtered water output from the outlet 202 of the filter element 2 will flow into the area formed by the water divider 5 and through the through-hole 57, so that the water in the water divider 5 flows into the second water flow area 53 formed on its outer wall. The water is guided through the second water flow area 53 and flows into the auxiliary flow channel 111 through the connecting port 112.

[0043] The through opening 57 may be located at any position on one side of the plug-in portion 54 , for example, the through opening 57 and the plug-in port 55 are arranged in opposite directions.

[0044] In another embodiment, a flange structure 58 is further provided on the edge of the annular spacer 51 , and the flange structure 58 extends away from the second water flow area 53 . A first annular water groove is formed between the flange structure 58 and the water divider 5 , and the first annular water groove forms the first water flow area 52 .

[0045] Specifically, since the water inlet cavity and the water outlet cavity are separated in the installation cavity of the valve body 1 by the annular spacer 51, the water flowing into the first annular water groove through the through-hole 56 of the intermediate tube 4 can be guided by the first annular water groove and distributed more evenly on the periphery of the filter element 2, thereby ensuring that the water can be filtered more effectively.

[0046] In another embodiment, the second water flow area 53 is a second annular water groove formed on the outer periphery of the water divider 5, and first sealing rings are respectively arranged on both sides of the second annular water groove, wherein one of the first sealing rings is squeezed between the outer wall of the water divider 5 and the inner wall of the installation cavity, and the other first sealing ring is squeezed between the annular spacer 51 and the inner wall of the installation cavity.

[0047] Specifically, the second water flow area 53 is a second annular water groove formed in a depression on the surface layer of the outer wall of the water divider 5 , and the second annular water groove can guide the water flow to flow more smoothly.

[0048] At the same time, in order to more effectively seal and separate the water inlet cavity and the water outlet cavity, the second water flow area 53 is provided with first sealing rings on both sides. The first sealing rings on both sides are squeezed and deformed to form two sealing areas to ensure that the second water flow area 53 is connected with the connecting port 112.

[0049] In order to meet the requirement of convenient disassembly of the filter element 2, the filter element 2 can be disassembled separately for maintenance without disassembling the filter bottle 3. For the valve body 1, the installation cavity formed by it is a structure with both ends open, so that one end of the installation cavity forms a connecting port 13 to meet the installation requirements of the filter bottle 3, and the filter element 2 forms a disassembly port 14 through another port formed on the valve body 1 by the installation cavity, and the disassembly port 14 is used to meet the requirements of disassembly and assembly of the filter element 2.

[0050] The two ends of the valve body 1 are open structures, one end of the valve body 1 forms the connecting port 13, and the other end of the valve body 1 forms a disassembly port 14; the filter element 2 is inserted into the installation cavity through the disassembly port 14 and extends into the filter bottle 3.

[0051] In order to achieve a sealed assembly connection after the filter element 2 is inserted into the valve body 1, the inlet 201 is provided at one end of the filter element 2, the outlet 202 is provided at the other end of the filter element 2, two second sealing rings are provided on the filter element 2, the outlet 202 is located between the two second sealing rings, the filter element 2 is inserted into the water divider 5, the second sealing ring is squeezed between the filter element 2 and the water divider 5, and the through hole 57 is located between the two second sealing rings.

[0052] Specifically, the two sealing rings configured on the filter element 2 are distributed on both sides of the outlet 202. After the filter element 2 is inserted into the valve body 1, the end of the filter element 2 with the outlet 202 is located in the water divider 5, and the second sealing ring is squeezed on the inner surface of the water divider 5 to meet the sealing requirements of the filter element 2 assembly through the second sealer.

[0053] During use, when the filter element 2 needs to be removed for maintenance or replacement, the filter element 2 can be removed from the valve body 1 through the disassembly port 14 without the need to additionally disassemble the filter bottle 3. In this way, the disassembly process can be effectively simplified to improve the efficiency of disassembly and maintenance, thereby improving user convenience.

[0054] In one embodiment of the present application, for the filter element 2, its performance entity can adopt the following method to meet the requirements of disassembly and assembly.

[0055] The filter element 2 includes a shell 21, a core 22 and a filter mesh sleeve 24. The inlet 201 is provided at one end of the shell 21, and the outlet 202 is provided at the other end of the shell 21. The core 22 is located in the shell 21, and the filter mesh sleeve 24 is sleeved on the outside of the shell 21 and covers the inlet 201.

[0056] The shell 21 is inserted into the water separator 5 and the filter bottle 3 via the disassembly port 14 .

[0057] In some embodiments, the shell 21 includes a cylinder 211 and a knob 210, the cylinder 211 is formed with the inlet 201 and the outlet 202, the end of the cylinder 211 provided with the outlet 202 is arranged on the knob 210, the cylinder 211 is provided with the second sealing ring, the knob 210 is also provided with the second sealing ring, the outlet 202 is formed on the side wall of the cylinder 211 and is located between two second sealing rings; the knob 210 is detachably arranged on the water separator 5, the cylinder 211 is inserted into the water separator 5 and the filter bottle 3, one of the second sealing rings is clamped between the cylinder 211 and the inner wall of the water separator 5, and the other second sealing ring is clamped between the cylinder 211 and the inner wall of the water separator 5.

[0058] Specifically, in order to facilitate the user to disassemble and assemble the filter element 2, the filter element 2 is detachably connected to the water separator 5 through a knob 210. For the filter element 2, it uses a cylinder 211 to hold filter materials, mineralized materials and other conventional water quality optimization materials. The end of the cylinder 211 with an outlet 202 is connected to the knob 210, and then connected to the water separator 5 through the knob 210 to realize the assembly of the filter element 2 to the water separator 5.

[0059] At the same time, the second sealing ring on the cylinder 211 can cooperate with the water divider 5 to isolate the outlet 202 from the water inlet cavity formed in the cylinder 211. The second sealing ring provided on the knob 210 can achieve the sealing of the outlet 202 in the water divider 5 to ensure that the water output from the outlet 202 flows into the second water flow area 53 through the through-hole 57.

[0060] In some embodiments, there may be various structural forms for the detachable connection between the knob 210 and the water divider 5 , for example, the knob 210 is threadedly connected to the water divider 5 .

[0061] Alternatively, a latch tongue is provided on the periphery of the knob 210 , and a latch groove 59 is formed on the inner wall of the water divider 5 . The latch groove 59 extends transversely on the inner wall of the water divider 5 around the axial direction of the water divider 5 , and the latch tongue is latched in the latch groove 59 .

[0062] Specifically, in order to facilitate the user or operator to disassemble and assemble, the knob 210 is installed on the water divider 5 by rotating and clamping. That is, after the cylinder 211 passes through the water divider 5 and extends into the filter bottle 3, the corresponding part of the knob 210 will extend into the water divider 5, and after the knob 210 is rotated, the clamping tongue slides and clamps into the clamping groove 59, so that the knob 210 is assembled on the water divider 5.

[0063] When the knob 210 is in use, the angle that the user needs to rotate the knob 210 during disassembly and assembly is small, thereby facilitating the disassembly and assembly operation.

[0064] In order to facilitate the user to drive the knob 210 to rotate, a paddle 2104 may be provided on the end surface of the knob 210, and the user pinches the paddle 2104 to rotate the knob 210 to drive the knob 210 to rotate. In addition, in order to optimize the appearance effect, a decorative cap 2105 may be provided on the outside of the knob 210, and the decorative cap 2105 may be clamped on the paddle 2104 and arranged on the outside of the knob 210 to make the overall appearance more beautiful. The outer circumference of the decorative cap 2105 may be provided with a plurality of ribs or grooves to increase friction and facilitate the user to rotate the decorative cap 2105 by hand.

[0065] In some embodiments of the present application, in order to facilitate the reliable sealing assembly of the intermediate tube into the water inlet connecting pipe, such as Fig.13 As shown, an annular protrusion structure 42 is formed on the outer tube wall of the outer end of the intermediate tube, and a sealing ring (not shown) is arranged between the annular protrusion structure and the inner tube wall of the water inlet connecting pipe.

[0066] Specifically, since the intermediate tube 4 is inserted into the water inlet connecting tube 11 and forms the auxiliary flow channel 111, and at the same time, the intermediate tube 4 also needs to be sealed and connected to the water inlet connecting tube 11, an annular protrusion structure 42 is formed at the outer end of the intermediate tube 4 to fit tightly against the inner tube wall of the water inlet connecting tube 11, and the annular protrusion structure 42 is further sealed and connected to the water inlet connecting tube 11 through a sealing ring.

[0067] In this way, the water introduced by the water inlet connecting pipe 11 will enter the intermediate pipe 4 for transportation and will not leak into the auxiliary flow channel 111 .

[0068] In another embodiment, a plurality of spaced-apart support ribs 43 are provided on the outer tube wall of the intermediate tube, and the support ribs are against the inner tube wall of the water inlet connecting pipe.

[0069] Specifically, after the front end of the intermediate tube 4 is assembled in the water inlet connecting tube 11 through the annular protrusion structure 42, the support rib 43 will also abut against the water inlet connecting tube 11. In this way, the intermediate tube 4 is firmly and stably assembled in the water inlet connecting tube 11 by utilizing the annular protrusion structure 42 and the support rib 43.

[0070] In one embodiment, as Fig.11 , Fig.12 and Fig.14 As shown, a positioning support ring 113 is provided on the inner tube wall of the water inlet connecting pipe 11, and the supporting ribs abut against the positioning support ring.

[0071] Specifically, the positioning support ring 113 provided on the inner tube wall of the water inlet connecting pipe 11 is used to cooperate with the support rib 43 to support the support rib 43. In addition, the positioning support ring 113 cooperates with the support rib 43 to start positioning the installation position of the intermediate pipe 4 in the water inlet connecting pipe 11, so as to facilitate the assembly of the operator.

[0072] In another embodiment, in order to facilitate assembly and prevent the intermediate tube 4 from falling off from the water inlet connecting tube 11 during transportation and assembly, at least one elastic stopper 44 is provided on the outer tube wall of the inner end of the intermediate tube, wherein the first end of the elastic stopper is provided on the intermediate tube, and the second end of the elastic stopper extends obliquely toward the outer end of the intermediate tube and away from the outer tube wall of the intermediate tube; The first end and the second end of the elastic limiting member 44 are arranged in opposite directions, and the second end of the elastic limiting member is clamped on the positioning support ring.

[0073] Specifically, during the assembly process, the middle tube 4 is inserted into the water inlet connecting tube 11 from the water inlet connecting tube 11, and after the elastic stopper 44 moves to the positioning support ring 113 and is squeezed, the elastic stopper 44 is deformed to pass over the positioning support ring 113. After the middle tube 4 is assembled in place, the elastic stopper 44 is reset due to its own elasticity, and the second end of the elastic stopper 44 is stuck on the inner side of the positioning support ring 113.

[0074] The elastic limiting member 44 cooperates with the positioning support ring 113 to limit the intermediate pipe 4 from being separated from the water inlet connecting pipe 11, thereby improving the reliability during transportation and on-site installation.

[0075] In another embodiment of the present application, since the filter element 2 needs to be replaced regularly, in order to improve the overall reliability of the pre-water treatment device 500 and reduce damage to the overall structure of the pre-water treatment device 500 caused by frequent disassembly and assembly of the filter components, the pre-water treatment device 500 is structurally designed and improved as follows.

[0076] Since the valve body 1 needs to meet the installation requirements of the water inlet pipe 200 and the filter assembly, and also needs to ensure that the overall structure of the valve body 1 will not be damaged during the frequent disassembly and assembly of the filter assembly, the valve body 1 is made of metal material.

[0077] Specifically, the valve body 1 is made of metal materials, such as stainless steel, copper and other metal materials used for water supply. The two ends corresponding to the three-way structure 10 on the valve body 1 form a water inlet connecting pipe 11 and a water outlet connecting pipe 12, which are also made of metal materials. When connected to the water inlet pipe 200 of the water heater and the water supply pipe in the user's home, the water inlet connecting pipe 11 and the water outlet connecting pipe 12 have a sufficiently strong structural strength to ensure the connection reliability of the connection parts.

[0078] Furthermore, for the filter assembly, the filter bottle 3 is installed on the connecting port 13, and the filter element 2 is installed on the disassembly port 14, so as to meet the assembly requirements of the filter assembly.

[0079] During later use, the filter assembly can be disassembled from the valve body 1 without causing damage to the structure of the valve body 1, thereby improving the reliability of use.

[0080] Among them, in order to facilitate disassembly, the connecting port 13 is a threaded port, and an external thread is arranged on the outer circumference of the port of the filter bottle 3, and the filter bottle 3 is threadedly connected to the connecting port 13; a structural reinforcement part is also arranged on the outer wall of the filter bottle 3, and the structural reinforcement part is adjacent to the external thread.

[0081] Specifically, during maintenance of the pre-water treatment device 500 , the filter bottle 3 can be removed from the valve body 1 as needed, and the filter bottle 3 is installed in the connection port 13 in a threaded connection manner.

[0082] Among them, the filter bottle 3 is generally made of plastic material. In order to improve its structural strength, the outer wall of the filter bottle 3 is provided with a structural reinforcement part near the external thread, so as to increase the structural strength of the filter bottle 3 near the external thread through the structural reinforcement part, thereby improving the reliability of the filter bottle 3.

[0083] In some embodiments, the structural reinforcement portion is a thickened layer formed near the external thread of the filter bottle 3. Specifically, during the injection molding process, the filter bottle 3 can form a thickened layer on the inner side of the outer wall where the external thread is formed, and the thickened layer is used to improve the structural strength of the filter bottle 3 at the bottle mouth.

[0084] Alternatively, in some embodiments, the structural reinforcement portion is a disassembly rib 31 provided on the outer wall of the filter bottle 3. Specifically, the disassembly rib 31 formed on the outer wall of the filter bottle 3 can improve the structural strength at the bottle mouth of the filter bottle 3 on the one hand, and on the other hand, the user can use a disassembly tool to clamp on the disassembly rib 31 during disassembly to drive the filter bottle 3 to rotate.

[0085] In another embodiment, in order to facilitate the user to visually see the usage status of the filter element 2 in the filter bottle 3 and to replace the filter element 2 in time when the water quality is poor, the filter bottle 3 is a transparent structure or a translucent structure.

[0086] Specifically, since the filter bottle 3 is made of transparent or translucent material, the user can directly observe the state of the filter element 2 in the filter bottle 3 during use, thereby shortening the replacement cycle of the filter element 2 when the water quality condition is poor.

[0087] In another embodiment of the present application, since the outside of the cylinder 211 is wrapped by the filter mesh sleeve 24, during the process of water flowing outside the cylinder 211, part of the water will pass through the filter mesh sleeve 24 and flow between the cylinder 211 and the filter mesh sleeve 24. In order to more effectively and evenly distribute the water flow, a plurality of flow-blocking ribs 217 can be provided on the outer wall of the cylinder 211. The plurality of flow-blocking ribs 217 are arranged side by side along the length direction of the cylinder 211, and a notch structure 218 is provided on the flow-blocking rib 217. The filter mesh sleeve 24 is wrapped outside the flow-blocking rib 217; the plurality of notch structures 218 located at the same position form a drainage channel extending toward the inlet 201.

[0088] Specifically, the multiple flow-blocking ribs 217 formed on the outside of the cylinder 211 along its length direction can block the water flowing through, and under the blocking of the flow-blocking ribs 217, the water will gradually flow to the inlet 201 through the notch structure 218. Under the action of the flow-blocking ribs 217, the water flow can be evenly distributed on the outer circumference of the cylinder 211.

[0089] In another embodiment, in order to further enrich the functions of the filter element 2 , a mounting groove 219 is provided on the end surface of the second end of the cylinder 211 , and a permanent magnet 23 is provided in the mounting groove 219 .

[0090] Specifically, by providing a mounting groove 219 at the second end of the cylinder 211, the permanent magnet 23 can be installed in the mounting groove 219. For the water flowing through, the water flowing through can be magnetized under the action of the permanent magnet 23. The permanent magnet 23 increases the dissolved oxygen content of the water, promotes the activity of microorganisms in the water, reduces the formation of scale, and improves the quality of the incoming water.

[0091] Furthermore, since the water divider 5 is generally made of plastic material, the slot 59 formed by the water divider 5 needs to meet the requirements of the filter element 2 for disassembly and assembly. During the disassembly and assembly process, the part where the slot 59 is formed will be frequently stressed, especially the part where the slot 59 is close to the edge of the water divider 5 is prone to damage. In order to improve the reliability of use, the valve body 1 made of metal material can be used to further strengthen the protection of the part where the slot 59 is formed on the water divider 5, and the specific structure design is as follows.

[0092] like Figure 5 As shown, the edge of the disassembly and assembly port 14 of the valve body 1 is provided with an inner flange 15 , and the inner flange 15 covers the outer side of the portion of the water distributor 5 having the clamping groove 59 .

[0093] Specifically, during the processing of the valve body 1, the edge of the disassembly opening 14 forms an inner flange 15. After the water divider 5 is installed in the valve body 1, the valve body 1, the valve body 1 and the water divider 5 will jointly form a pre-water treatment device for diverting the flow of water. For the water divider 5 assembled in the valve body 1, the clamping groove 59 formed thereon is used for the later assembly of the filter element 2. The clamping groove 59 on the water divider 5 will receive the external force generated by the clamping during the disassembly process. At this time, the outer part of the water divider 5 where the clamping groove 59 is formed is prone to damage. By providing the inner flange 15 on the disassembly opening 14 of the valve body 1, the inner flange 15 will be close to the part of the water divider 5 with the clamping groove 59.

[0094] During use, when the tongue on the knob 210 slides into the slot 59 and is stuck in the slot 59, the inner flange 15 on the outside of the slot 59 can support the slot 59, thereby strengthening the structure of the slot 59 and improving the reliability of use.

[0095] In order to improve the connection reliability between the knob 210 and the water divider 5, the knob 210 may be provided with a plurality of latching tongues, and correspondingly, the water divider 5 is provided with a plurality of latching grooves 59, and the latching tongues will slide into the corresponding latching grooves 59. Similarly, the outer side of each latching groove 59 is provided with a corresponding inner flange 15.

[0096] In addition, in order to guide the knob 210 to slide into the slot 59 , a first guiding slope 591 is formed at the end of the slot 59 away from its notch, and the first guiding slope 591 extends obliquely toward the notch of another adjacent slot 59 .

[0097] Specifically, during the process of rotating the knob 210 , the latch tongue on the knob 210 can be guided by the first guide slope 591 to slide toward the notch direction of the corresponding latch groove 59 and be latched into the latch groove 59 .

[0098] Meanwhile, for the inner flange 15, a second guide slope 16 is formed at one end of the inner flange 15, and the second guide slope 16 overlaps the first guide slope 591 and has the same inclination direction as the first guide slope 591. During the assembly of the knob 210, the user does not need to accurately adjust the position of the latch tongue, but only needs to dock the knob 210 in the disassembly opening 14 of the valve body 1 and then rotate it in the locking direction, and the latch tongue will slide into the slot 59 via the first guide slope 591 or sequentially via the second guide slope 16 and the first guide slope 591, so as to facilitate the user's use.

[0099] In another embodiment, after long-term use, the filter material in the cylinder 211 is easily clogged by scale and becomes ineffective. In order to reduce maintenance costs, the cylinder 211 and the knob 210 are connected by a structure that is easy to disassemble and assemble.

[0100] Specifically, a first connection portion 2111 is provided on the end of the cylinder 211 provided with the outlet 202, and a second connection portion 2101 is provided on the knob 210, and the first connection portion 2111 and the second connection portion 2101 are detachably connected together.

[0101] When the filter element 2 needs to be assembled, the first connection part 2111 and the second connection part 2101 cooperate with each other to assemble the cylinder 211 and the knob 210. After the filter element 2 is removed from the valve body 1, the cylinder 211 can be separated from the knob 210, so that the cylinder 211 with new filter material can be assembled with the knob 210 and then reinstalled into the valve body 1 for use. The knob 210 can be reused, reducing the number of parts to be replaced, thereby reducing maintenance costs and usage costs.

[0102] There are many ways to connect the first connection part 2111 and the second connection part 2101. For example, the first connection part 2111 and the second connection part 2101 are threadedly connected together.

[0103] Alternatively, an installation slot 2102 is provided at the end where the knob 210 is connected to the cylinder 211, the first connecting portion 2111 is an elastic claw provided on the outer wall of the cylinder 211, and the second connecting portion 2101 is a clamping protrusion provided on the inner wall of the installation slot 2102, and the elastic claw is clamped on the clamping protrusion.

[0104] Specifically, two elastic claws are symmetrically arranged on both sides of the outer wall of the cylinder 211 to serve as the first connection part 2111, and correspondingly, a corresponding clamping protrusion is arranged in the installation slot 2102 formed by the knob 210 to serve as the second connection part 2101. When the cylinder 211 and the knob 210 are assembled, the end of the cylinder 211 with the outlet 202 is inserted into the installation slot 2102, and the elastic claw is squeezed by the inner wall of the installation slot 2102 to deform and pass over the clamping protrusion, and finally, the elastic claw is clamped on the clamping protrusion provided in the installation slot 2102.

[0105] When the barrel 211 needs to be disassembled, the user only needs to press the elastic claws on both sides to disengage the clamping protrusions, and then the barrel 211 can be pulled out of the installation slot 2102. The first connecting portion 2111 and the second connecting portion 2101 are clamped, making the disassembly and assembly process faster and more convenient, thereby improving the convenience of use.

[0106] In one embodiment, in order to improve the assembly accuracy between the cylinder 211 and the knob 210, the cylinder 211 has an end portion of the outlet 202 to form a back-to-back positioning surface 2112, the elastic claw is arranged on the positioning surface 2112, and a positioning rib 2103 is provided in the mounting slot 2102, and the positioning rib 2103 is abutted against the positioning surface 2112.

[0107] Specifically, during the assembly process, the end of the cylinder 211 having the outlet 202 is inserted into the installation slot 2102, and the positioning rib 2103 and the positioning surface 2112 cooperate and guide each other, so that the first connection part 2111 and the second connection part 2101 can be more accurately matched and connected.

[0108] In another embodiment, in order to further reduce the maintenance cost and reuse the cylinder 211, during maintenance, only the filter material in the cylinder 211 needs to be replaced, and the cylinder 211 is improved in structure as follows.

[0109] The end of the cylinder 211 provided with the inlet 201 forms a mounting opening, and a disassembled plug 2113 is provided in the mounting opening.

[0110] Specifically, after the filter element 2 is removed from the valve body 1, the plug 2113 can be pulled out from the installation port of the cylinder 211, so that the filter material in the cylinder 211 can be taken out, and after the filter mesh sleeve 24 inside and outside the cylinder 211 is cleaned with clean water, new filter material can be loaded into the cylinder 211, and then, after the plug 2113 is assembled, the filter element 2 can be reinstalled and used.

[0111] The plug 2113 is provided with a mounting groove 219 , and a permanent magnet 23 is disposed in the mounting groove 219 .

[0112] Specifically, by arranging the permanent magnet 23 in the installation groove 219, the water flowing through can be magnetized under the action of the permanent magnet 23. The permanent magnet 23 increases the dissolved oxygen content of the water, promotes the activity of microorganisms in the water, reduces the formation of scale, and improves the quality of the incoming water.

[0113] In another embodiment of the present application, in order to ensure that the water flow in the auxiliary flow channel 111 can flow smoothly, it is necessary to increase the water flow cross-sectional area of ​​the auxiliary flow channel 111. To this end, the intermediate pipe 4 is improved as follows. Fig.15 As shown, the intermediate tube 4 is an eccentric tube, the outer end of the eccentric tube is sealed and connected to the inner tube wall of the water inlet connecting tube 11, the inner end of the eccentric tube is inserted into the plug port 55, and the plug port 55 and the connecting port 112 are eccentrically arranged relative to each other.

[0114] Specifically, the intermediate tube 4 adopts the structure of an eccentric tube, and the outer end of the eccentric tube can be well sealed and connected to the water inlet connecting tube 11, so that all the water entering the water inlet connecting tube 11 can flow into the eccentric tube. The inner end of the eccentric tube extends into the connecting port 112, and the pipe opening of the inner end of the eccentric tube and the pipe opening of the outer end thereof form an eccentric arrangement. At the same time, the pipe opening of the inner end of the eccentric tube is also offset in the connecting port 112, so that an auxiliary flow channel 111 with a larger cross section can be formed between the eccentric tube and the water inlet connecting tube 11, thereby satisfying that the water in the water outlet cavity flows smoothly into the water outlet connecting tube 12 via the auxiliary flow channel 111.

[0115] In order to further increase the space at the water inlet of the water outlet connecting pipe 12, a recessed structure 41 may be provided on the intermediate pipe 4. The recessed structure 41 is arranged opposite to the water inlet of the water outlet connecting pipe 12, so that the water transported by the auxiliary flow channel 111 can flow more smoothly into the water outlet connecting pipe 12 at the recessed structure 41, thereby ensuring smooth flow of the outlet water flow.

[0116] like Figure 16-Figure 17 As shown, this embodiment provides a water heater, which includes a water heater body 100. The water heater body 100 may be an electric water heater, a water tank of a heat pump water heater, or a water tank of a solar water heater.

[0117] When the water heater body 100 is used in a user's home, it is installed on a wall of the user's home according to installation requirements.

[0118] Among them, the water heater body 100 is equipped with a water inlet pipe 200 and a water outlet pipe 300. In order to improve the water quality of the water heater, a pre-water treatment device 500 can be added between the water inlet pipe 200 of the water heater and the water supply pipe in the user's home to filter and treat the water output from the water supply pipe through the pre-water treatment device 500.

[0119] In addition, the pre-water treatment device 500 generally includes a valve body 1 and a filter assembly, the filter assembly includes a filter element 2 and a filter bottle 3, the valve body 1 is used to meet the connection requirements between the water inlet pipe 200 of the water heater and the water supply pipe in the user's home, and at the same time, the valve body 1 is also used to install the filter element 2 and the filter bottle 3 of the filter assembly.

[0120] In one embodiment, in order to optimize the appearance of the whole water heater, it is to avoid that after the pre-water treatment device 500 is installed, the pre-water treatment device 500 is exposed at the bottom of the water heater, which causes the appearance to deteriorate.

[0121] The water heater body 100 is further provided with a decorative cover 400, the water inlet pipe 200 and the water outlet pipe 300 are arranged at the back of the decorative cover 400, and is characterized in that it also includes a pre-water treatment device 500; For the pre-water treatment device 500 , the filter assembly is arranged horizontally as a whole and is hidden at the back of the decorative cover 400 .

[0122] Specifically, the water inlet pipe 200 of the water heater is used to meet the internal water intake, and the water outlet pipe 300 is used to output the heated water to the water terminal. The water entering the water inlet pipe 200 can be filtered by the pre-water treatment device 500 to improve the quality of the water entering the water heater.

[0123] Among them, since the pre-water treatment device 500 is installed on the water inlet pipe 200, in order to realize a hidden installation method of the pre-water treatment device 500, the installation structure of the pre-water treatment device 500 is improved and designed.

[0124] Specifically, the filter element 2 and the filter bottle 3 of the pre-water treatment device 500 are both arranged horizontally, and the space at the bottom of the water heater is used to extend the installation arrangement horizontally. In this way, the overall height of the pre-water treatment device 500 can be effectively reduced, and the horizontal space at the bottom of the water heater can meet the installation requirements of the pre-water treatment device 500.

[0125] The valve body 1 of the pre-water treatment device 500 is connected to the external water pipe through the water inlet connection pipe 11, and is connected to the water inlet pipe 200 on the water heater body 100 through the water outlet connection pipe 12. The filter element 2 and the filter bottle 3 are installed on the corresponding connection ports of the valve body 1.

[0126] In some embodiments, in order to facilitate the installation of on-site pipelines, the water outlet connecting pipe 12 is arranged vertically and extends upward, and the water inlet connecting pipe 11 is arranged horizontally.

[0127] Specifically, when the water heater is installed in the user's home, the water heater is arranged above the external water pipe provided on the wall of the user's home, and the water inlet pipe 200 of the water heater and the external water pipe on the wall are arranged perpendicular to each other. To this end, the water inlet connection pipe 11 on the valve body 1 is arranged horizontally and extends toward the back of the water heater to meet the requirements of connecting with the external water pipe on the wall. At the same time, the water outlet connection pipe 12 on the valve body 1 is arranged vertically and extends upward to meet the requirements of connecting with the water inlet pipe 200 of the water heater.

[0128] In this way, when the water heater is installed at the user's home, it is more convenient to connect the on-site pipelines to reduce the difficulty of installation.

[0129] In some embodiments, there may be multiple forms for the specific extension of the filter bottle 3 and the filter element 2 in the lateral direction.

[0130] For example: Fig.16 and Fig.17 As shown, the filter bottle 3 and the filter element 2 extend toward the back of the water heater.

[0131] Specifically, refer to Fig.17 It can be seen that the filter bottle 3 and the filter element 2 are arranged laterally on the back of the decorative cover 400 and extend in a direction away from the decorative cover 400 .

[0132] like Fig.18 and Fig.19 As shown, the filter bottle 3 and the filter element 2 extend toward the water outlet pipe 300 and are arranged between the water outlet pipe 300 and the decorative cover 400 .

[0133] Specifically, refer to Fig.19It can be seen that the filter bottle 3 and the filter element 2 are arranged horizontally on the back of the decorative cover 400 and extend from the water inlet pipe 200 to the water outlet pipe 300. Since the space between the water inlet pipe 200 and the water outlet pipe 300 of the water heater is generally not additionally arranged with related functional components, the filter bottle 3 and the filter element 2 can be arranged and installed using the space between the water inlet pipe 200 and the water outlet pipe 300. The end of the filter bottle 3 with a longer length can also extend over the water outlet pipe 300 and be located between the water outlet pipe 300 and the decorative cover 400.

[0134] Since the filter bottle 3 and the filter element 2 are arranged in the area between the water inlet pipe 200, the water outlet pipe 300 and the decorative cover 400, the space behind the water inlet pipe 200 and the water outlet pipe 300 can be vacated to facilitate the connection of the water pipe.

[0135] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A pre-water treatment device, characterized in that it includes: A valve body, wherein the valve body is a cylindrical structure with openings at both ends, one end of the valve body is a connection port, and the other end of the valve body is a disassembly port, the connection port and the disassembly port are arranged in back-to-back relation, and a three-way structure is formed on the side wall of the valve body, and two ends of the three-way structure located outside the valve body respectively form a water inlet connection pipe and a water outlet connection pipe; A filter element, wherein the filter element has an inlet and an outlet, and the filter element is configured to filter water input from the inlet and output water from the outlet; Filter bottle; Intermediate tube; In which, the filter bottle is arranged on the connecting port, the filter element passes through the valve body and extends into the filter bottle via the disassembly and assembly port, the intermediate tube is inserted into the water inlet connecting pipe, the outer end of the intermediate tube is sealed and connected with the inner tube wall of the water inlet connecting pipe, the inner end of the intermediate tube extends into the interior of the valve body, an auxiliary flow channel is formed between the outer tube wall of the intermediate tube and the inner tube wall of the water inlet connecting pipe, the water inlet connecting pipe is connected with the inlet through the intermediate tube, and the water outlet connecting pipe is connected with the outlet through the auxiliary flow channel.

2. The pre-water treatment device according to claim 1, characterized in that: An annular protrusion structure is formed on the outer tube wall of the outer end portion of the intermediate tube, and a sealing ring is arranged between the annular protrusion structure and the inner tube wall of the water inlet connecting pipe.

3. The pre-water treatment device according to claim 2, characterized in that: A plurality of support ribs arranged at intervals are provided on the outer tube wall of the intermediate tube, and the support ribs are against the inner tube wall of the water inlet connecting pipe.

4. The pre-water treatment device according to claim 3, characterized in that: A positioning support ring is arranged on the inner tube wall of the water inlet connecting pipe, and the supporting ribs abut against the positioning support ring.

5. The pre-water treatment device according to claim 4, characterized in that: At least one elastic stopper is arranged on the outer tube wall of the inner end of the intermediate tube, the first end of the elastic stopper is arranged on the intermediate tube, and the second end of the elastic stopper extends obliquely toward the outer end of the intermediate tube and away from the outer tube wall of the intermediate tube; The first end and the second end of the elastic limiting member are arranged back to back, and the second end of the elastic limiting member is clamped on the positioning support ring.

6. The pre-water treatment device according to claim 1, characterized in that: Also includes: A water divider, the water divider is annular in structure, an annular spacer is arranged on the outer circumference of the water divider, the outer circumference of the water divider forms a first water flow area on one side of the annular spacer, and the outer circumference of the water divider forms a second water flow area on the other side of the annular spacer; Wherein, the filter element also passes through the water distributor, the inner pipe opening of the intermediate pipe is connected with the inlet through the first water flow area, and the auxiliary flow channel is connected with the outlet through the second water flow area.

7. The pre-water treatment device according to claim 6, characterized in that: The annular spacer is provided with an inserting portion, the inserting portion is located in the second water flow area, the inserting portion is provided with an inserting port, and the side of the inserting port is provided with a through opening of the annular spacer that penetrates the annular spacer; The inner end of the intermediate tube is sealed and inserted into the insertion port, and the inner tube opening of the intermediate tube is connected to the first water flow area through the through opening.

8. The pre-water treatment device according to claim 6, characterized in that: The edge of the annular spacer is also provided with a flange structure, the flange structure extends in the direction away from the second water flow area, a first annular water groove is formed between the flange structure and the water divider, and the first annular water groove forms the first water flow area; The second water flow area is a second annular water groove formed on the outer periphery of the water divider, and first sealing rings are respectively arranged on both sides of the second annular water groove, wherein one of the first sealing rings is squeezed between the outer wall of the water divider and the inner wall of the valve body, and the other first sealing ring is squeezed between the annular spacer and the inner wall of the valve body.

9. The pre-water treatment device according to claim 8, characterized in that: The inlet is provided at one end of the filter element, the outlet is provided at the other end of the filter element, two second sealing rings are provided on the filter element, the outlet is located between the two second sealing rings, the filter element is inserted in the water separator, and the second sealing ring is squeezed between the filter element and the water separator.

10. A water heater, comprising a water heater body, wherein the water heater body is provided with a water inlet pipe and a water outlet pipe, wherein: It also includes a pre-water treatment device as described in any one of claims 1 to 9, wherein the water outlet connecting pipe of the pre-water treatment device is connected to the water inlet pipe.

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