Filtering device and water heater

Abstract

The utility model discloses a filtering device and a water heater, and relates to the technical field of water heaters. Wherein the filtering device comprises a fixed seat, a water stop structure and a filter bottle assembly, and the fixed seat is provided with a water inlet; the water stop structure is movably installed on the fixing base and used for opening or closing the water inlet. The filter bottle assembly is detachably mounted on the fixed seat and is linked with the water stop structure; when the filter bottle assembly and the fixed seat are in an assembled state, the water stopping structure opens the water inlet, so that the water inlet is communicated with the filter bottle assembly; and when the filter bottle assembly and the fixed seat are in a separated state, the water stop structure closes the water inlet. According to the technical scheme, water leakage of the filter bottle assembly in the dismounting process can be prevented, and meanwhile the risk that a user is scalded can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of water heater technology, and in particular to a filtration device and a water heater. Background Technology

[0002] Water heaters are common household appliances. During use, water from the tap enters the inner tank of the water heater through the inlet pipe, is heated, and then hot water is output from the outlet pipe.

[0003] In related technologies, a filter device is installed in the water heater's pipes to improve the water quality. However, when the filter device is disassembled and replaced, water in the pipes may leak out from the filter device, and if the water temperature is high, it may scald the user. Utility Model Content

[0004] The main purpose of this invention is to provide a filtration device designed to prevent water leakage during disassembly.

[0005] To achieve the above objectives, the filtration device proposed in this utility model includes:

[0006] Fixed base, equipped with water inlet;

[0007] A water-stop structure, movably mounted on the fixed base, is used to open or close the water inlet; and

[0008] The filter bottle assembly is detachably mounted on the mounting base and is linked with the water-stopping structure;

[0009] When the filter bottle assembly and the fixed base are in the assembled state, the water-stop structure opens the water inlet to make the water inlet connected to the filter bottle assembly;

[0010] When the filter bottle assembly is separated from the fixed base, the water-stopping structure closes the water inlet.

[0011] In one embodiment of this application, the filter bottle assembly is connected to the water-stopping structure via a transmission connection.

[0012] In one embodiment of this application, the water-stopping structure is rotatably engaged with the fixed base, and the filter bottle assembly is used to drive the water-stopping structure to rotate relative to the fixed base.

[0013] In one embodiment of this application, the water-stopping structure includes a water-stopping plate that rotatably engages with the fixed base and a first retaining member, wherein the first retaining member is disposed at the end of the water-stopping plate away from the fixed base;

[0014] The filter bottle assembly is provided with a second retaining member, which is in transmission cooperation with the first retaining member to drive the water stop plate to rotate in order to block or open the water inlet.

[0015] In one embodiment of this application, the water stop plate has a disc-shaped structure and is provided with a water outlet; when the filter bottle assembly is in the assembled state, the water outlet is connected to the water inlet; when the filter bottle assembly is in the separated state, the water outlet and the water inlet are completely offset.

[0016] In one embodiment of this application, the water-stopping structure is provided with a first limiting member, and the fixing seat is provided with a second limiting member. The second limiting member cooperates with the first limiting member to axially limit the water-stopping structure and the fixing seat.

[0017] In one embodiment of this application, the fixing base includes:

[0018] At the end, a water inlet is provided, and the water-stopping structure is rotatably fitted at the end; and

[0019] The surrounding portion is connected to the periphery of the end portion; the filter bottle assembly is detachably snapped into the surrounding portion, and in the assembled state, the filter bottle assembly, the surrounding portion, and the end portion enclose to form a filter cavity.

[0020] In one embodiment of this application, the inner peripheral wall of the enclosure is provided with a snap-fit ​​position and a guide groove, one end of the guide groove is connected to the snap-fit ​​position, and the other end extends to the end of the enclosure away from the end.

[0021] The outer wall of the filter bottle assembly is provided with a snap-fit ​​part, which is installed to the snap-fit ​​position via the guide groove so that the filter bottle assembly is assembled with the enclosure.

[0022] In one embodiment of this application, the guide groove extends spirally along the inner peripheral wall of the enclosure.

[0023] In one embodiment of this application, the outer wall of the filter bottle assembly is further provided with a limiting rib; the inner peripheral wall of the enclosure is provided with a limiting groove;

[0024] When the snap-fit ​​part is installed in the snap-fit ​​position, the limiting rib is snapped into the limiting slot.

[0025] In one embodiment of this application, the fixing base is further provided with a water outlet; the filter bottle assembly includes:

[0026] The bottle body is detachably connected to the mounting base;

[0027] A bracket, installed on the bottle body, is used for a transmission connection with the water-stop structure; and

[0028] The filter element is installed on the bracket and located inside the bottle, dividing the inner cavity of the bottle into a first cavity and a second cavity. The first cavity is connected to the water inlet, and the second cavity is connected to the water outlet.

[0029] To achieve the above objectives, this application also provides a water heater, including an inner tank and the aforementioned filter device, wherein the inner tank is provided with an inlet pipe, an outlet pipe and a drain pipe, and the filter device is installed in at least one of the inlet pipe, the outlet pipe and the drain pipe.

[0030] In this filtration device, a water-stopping structure is movably installed on the fixed base. The filter bottle assembly is detachably installed and linked to the fixed base. When the filter bottle assembly is assembled with the fixed base, the water-stopping structure opens the water inlet on the fixed base, allowing the water inlet to be filtered to smoothly enter the filter bottle assembly for filtration, thus achieving normal filtration. When the filter bottle assembly is disassembled from the fixed base, the water-stopping structure closes the water inlet. Therefore, this embodiment can prevent water leakage during the disassembly of the filter bottle assembly and also reduce the risk of scalding for users. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0032] Figure 1 This is an exploded structural diagram of an embodiment of the filtration device of this utility model;

[0033] Figure 2 This is a structural diagram of the filter device of this utility model in the assembled state;

[0034] Figure 3 This is a schematic diagram of the filter device of this utility model in the separation state;

[0035] Figure 4 This is a schematic diagram of the water-stopping structure in an embodiment of the present invention;

[0036] Figure 5 This is a schematic diagram of the support structure in an embodiment of the present utility model;

[0037] Figure 6 This is a schematic diagram of the structure of the fixing base in an embodiment of this utility model;

[0038] Figure 7This is a schematic diagram of the cooperation structure between the water-stopping structure and the fixed seat when the water inlet is closed in the embodiment of this utility model.

[0039] Explanation of icon numbers:

[0040]

[0041]

[0042] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0044] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0045] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0046] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0047] In related technologies, a filter device is installed in the water heater's piping to improve water quality. After a period of use, a certain amount of impurities will accumulate in the filter assembly, requiring replacement and cleaning. However, leakage is prone to occur during disassembly and replacement. Related technologies use a water-stop device on the filter assembly to seal the inlet and prevent water leakage during disassembly. However, this solution does not seal the inlet channel on the filter mounting base, thus failing to solve the problem of water leakage from the water heater's piping.

[0048] Therefore, this utility model proposes a filtration device to prevent water from leaking out of the water heater's pipes when the filter bottle assembly 3 is disassembled.

[0049] In the embodiments of this utility model, such as Figures 1 to 3 As shown, the filtration device includes a fixed base 1, a water-stopping structure 2, and a filter bottle assembly 3.

[0050] The fixed base 1 is provided with a water inlet 101; the water-stopping structure 2 is movably installed on the fixed base 1 for opening or closing the water inlet 101; the filter bottle assembly 3 is detachably installed on the fixed base 1 and is linked with the water-stopping structure 2; when the filter bottle assembly 3 and the fixed base 1 are in the assembled state, the water-stopping structure 2 opens the water inlet 101 to make the water inlet 101 communicate with the filter bottle assembly 3; when the filter bottle assembly 3 and the fixed base 1 are in the separated state, the water-stopping structure 2 closes the water inlet 101.

[0051] In this embodiment, the filtration device is installed in the pipeline requiring filtration. Water in the pipeline enters the filtration device through the inlet 101, is filtered, and then flows out through the outlet 102, thus achieving the filtration function. Specifically, the mounting base 1 connects components of the filtration device, such as the water-stop structure 2 and the filter bottle assembly 3, to the pipeline to be filtered. The inlet 101 on the mounting base 1 is used to communicate with the pipeline to be filtered. The filter bottle assembly 3 filters the water. The filter bottle assembly 3 is detachably installed on the mounting base 1, so that water entering through the inlet 101 flows into the filter bottle assembly 3 for filtration. The filtered water then flows out through the outlet 102 into the downstream pipeline. It should be noted that the outlet 102 can be located on the mounting base 1 or on the filter bottle assembly 3; its specific location is not specifically limited here. By providing a movable water-stopping structure 2 on the fixed base 1, which is linked to the filter bottle assembly 3, the water-stopping structure 2 can open the water inlet 101 when the filter bottle assembly 3 is assembled with the fixed base 1. This allows the water inlet 101 to connect with the filter bottle assembly 3, enabling the water to be filtered in the pipeline to smoothly enter the filter bottle assembly 3 for filtration, thus achieving normal filtration function. When the filter bottle assembly 3 is disassembled from the fixed base 1, the water-stopping structure 2 can close the water inlet 101, thereby preventing water leakage from the filtration device and reducing the risk of scalding for the user.

[0052] In practical applications, the linkage between the water-stopping structure 2 and the filter bottle assembly 3 can be either a mechanical transmission relationship or a control-based linkage relationship. When the two are mechanically driven, it can be a direct or indirect transmission, such as direct contact transmission or an intermediate transmission structure like a gear transmission system or a wedge block transmission system. When the two are controlledly linked, it can be achieved using a solenoid valve, a motor drive, or other control structures.

[0053] In practical applications, the water-stopping structure 2 and the fixed base 1 can be rotatably connected or slidably connected. The water-stopping structure 2 can be a baffle structure, a plunger structure, or other structures. The detachable connection structure between the filter bottle assembly 3 and the fixed base 1 can be a snap-fit ​​connection, a threaded connection, a magnetic connection, or other detachable structures.

[0054] In summary, in the filtration device of this utility model, by movably installing the water-stopping structure 2 on the fixed base 1, the filter bottle assembly 3 is detachably installed with the fixed base 1 and linked with the water-stopping structure 2. This allows the water-stopping structure 2 to open the water inlet 101 on the fixed base 1 when the filter bottle assembly 3 is assembled with the fixed base 1, enabling the water inlet 101 to connect with the filter bottle assembly 3. Water to be filtered in the pipeline can then smoothly enter the filter bottle assembly 3 through the water inlet 101 for filtration, achieving normal filtration. When the filter bottle assembly 3 is disassembled from the fixed base 1, the water-stopping structure 2 closes the water inlet 101. Therefore, this embodiment can prevent water leakage from the filter bottle assembly 3 during disassembly and also reduce the risk of scalding for the user.

[0055] In one embodiment of this application, as Figure 1 , Figure 4 as well as Figure 5 The filter bottle assembly 3 is connected to the water-stopping structure 2 via a transmission.

[0056] The filter bottle assembly 3 is connected to the water-stop structure 2 via a transmission connection, allowing the filter bottle assembly 3 to directly drive the water-stop structure 2 to move relative to the fixed base 1 during assembly and disassembly. Specifically, when the filter bottle assembly 3 is installed on the fixed base 1, the filter bottle assembly 3 directly pushes the water-stop structure 2 to move together, opening the water inlet 101; when the filter bottle assembly 3 is removed from the fixed base 1, the filter bottle assembly 3 directly pushes the water-stop structure 2 to move together, closing the water inlet 101 and preventing leakage. Compared with a controlled linkage method, this embodiment has a simpler structure and lower cost.

[0057] Furthermore, such as Figure 4 , Figure 5 as well as Figure 7 The water-stopping structure 2 is rotatably engaged with the fixed base 1, and the filter bottle assembly 3 is used to drive the water-stopping structure 2 to rotate relative to the fixed base 1.

[0058] In this embodiment, when the filter bottle assembly 3 is installed with the fixed base 1, the filter bottle assembly 3 can drive the water-stop structure 2 to rotate relative to the fixed base 1 to the position where the water inlet 101 is open; when the filter bottle assembly 3 is removed from the fixed base 1, the filter bottle assembly 3 can drive the water-stop structure 2 to rotate relative to the fixed base 1 to the position where the water inlet 101 is closed.

[0059] Compared to other linear motion methods such as wedge blocks, this design makes the operation of this embodiment simpler and the structure simpler.

[0060] Specifically, such as Figure 4 and Figure 7The water-stop structure 2 is provided with a first limiting member 211, and the fixed seat 1 is provided with a second limiting member 111. The second limiting member 111 cooperates with the first limiting member 211 to axially limit the water-stop structure 2 and the fixed seat 1.

[0061] This embodiment illustrates the rotational engagement structure between the waterstop plate 21 and the fixed seat 1. By providing a first limiting member 211 on the waterstop structure 2 and a second limiting member 111 on the fixed seat 1, the second limiting member 111 and the first limiting member 211 can axially limit the waterstop structure 2 and the fixed seat 1 to prevent them from falling off. Optionally, the first limiting member 211 can be a limiting boss, and the second limiting member 111 can also be a limiting boss. The two limiting bosses are axially engaged, which can prevent them from falling off while ensuring the rotational engagement function of the waterstop structure 2 and the fixed seat 1. As an example, the first limiting member 211 can be located at the center of the waterstop structure 2, and the second limiting member 111 can be located at the center of the fixed seat 1. This arrangement makes the rotational engagement between the waterstop structure 2 and the fixed seat 1 more stable.

[0062] Specifically, such as Figures 2 to 5 The water-stopping structure 2 includes a water-stopping plate 21 that rotates with the fixed base 1 and a first retaining member 22. The first retaining member 22 is located at the end of the water-stopping plate 21 away from the fixed base 1. The filter bottle assembly 3 is provided with a second retaining member 321, which is driven to rotate with the first retaining member 22 to block or open the water inlet 101.

[0063] In this embodiment, the water-stop plate 21 functions to cooperate with the fixed base 1. The water-stop plate 21 can rotate along the inner wall of the fixed base 1 to block or open the water inlet 101. A first retaining member 22 is provided at the end of the water-stop plate 21 facing away from the fixed base 1, and a second retaining member 321 is provided for the filter bottle assembly 3. When the filter bottle assembly 3 is assembled with the fixed base 1, the second retaining member 321 can engage with the first retaining member 22. Under the movement of the filter bottle assembly 3, the second retaining member 321 can drive the first retaining member 22 to move together, thereby causing the water-stop plate 21 to rotate relative to the fixed base 1 to the position where the water inlet 101 is open. Correspondingly, when the filter bottle assembly 3 is disassembled from the fixed base 1, the movement of the filter bottle assembly 3 can drive the second retaining member 321 to push the first retaining member 22 to move, thereby causing the water-stop plate 21 to rotate relative to the fixed base 1 to the position where the water inlet 101 is blocked.

[0064] The first retaining member 22 and the second retaining member 321 are in a transmission engagement, which can be understood as the first retaining member 22 and the second retaining member 321 engaging with each other, enabling the power transmission between the filter bottle assembly 3 and the waterstop plate 21. Optionally, one of the first retaining member 22 and the second retaining member 321 can be a retaining rib, and the other can be a retaining groove. The number of first retaining members 22 can be one, two or more; correspondingly, the number of second retaining members 321 can also be one, two or more. In practical applications, to facilitate the engagement of the two, the retaining groove can be set as a figure-eight structure to facilitate the insertion and engagement of the retaining rib.

[0065] In practical applications, the shape and structure of the waterstop plate 21 can be determined according to the actual situation, such as a disc-shaped structure, a fan-shaped structure, or some other shapes. As an example, the waterstop plate 21 has a disc-shaped structure and is provided with a water inlet 201. When the filter bottle assembly 3 is in the assembled state, the water inlet 201 is connected to the water inlet 101; when the filter bottle assembly 3 is in the separated state, the water inlet 201 and the water inlet 101 are completely offset. Compared with other shapes, this design, with the disc-shaped waterstop plate 21, provides a better sealing effect on the water inlet 101 when the water inlet 201 and the water inlet 101 are completely offset, further improving the leak-proof effect. Furthermore, when there are two or more first retaining members 22, the two or more first retaining members 22 are preferably spaced apart around the rotation center of the waterstop plate 21.

[0066] In one embodiment of this application, as Figures 1 to 3 as well as Figure 6 The fixed base 1 includes an end 11 and a surrounding portion 12. The end 11 is provided with a water inlet 101, and the water-stopping structure 2 is rotatably fitted to the end 11. The surrounding portion 12 is connected to the periphery of the end 11. The filter bottle assembly 3 is detachably snapped into the surrounding portion 12. In the assembled state, the filter bottle assembly 3, the surrounding portion 12 and the end 11 surround and form a filter chamber.

[0067] In this embodiment, the surrounding portion 12 forms a sleeve structure around the periphery of the end portion 11, and the filter bottle assembly 3 has an open structure. When the filter bottle assembly 3 is connected to the surrounding portion 12, the surrounding portion 12 and the end portion 11 cover the open portion of the filter bottle assembly 3, so that the filter bottle assembly 3, the surrounding portion 12, and the end portion 11 enclose and form a filter chamber. The water inlet 101 is provided on the end portion 11, and the water-stopping structure 2 is rotatably engaged with the end portion 11. Thus, during the assembly and disassembly of the filter bottle assembly 3, the water-stopping structure 2 can be rotated relative to the end portion 11 to close or open the water inlet 101.

[0068] Optionally, the second limiting member 111 is provided at the end 11, and the first limiting member 211 is provided at the water stop plate 21. The water stop plate 21 and the end 11 are assembled through the first limiting member 211 and the second limiting member 111. The surface of the water stop plate 21 facing away from the filter bottle assembly 3 abuts against the surface of the end 11.

[0069] Optionally, the end portion 11 and the surrounding portion 12 are integrally formed.

[0070] Optionally, in the assembled state, a sealing element 4 is provided between the filter bottle assembly 3 and the enclosure 12 to ensure the sealing of the filter chamber and prevent water leakage at the connection between the filter bottle assembly 3 and the enclosure 12.

[0071] In this embodiment, the filter bottle assembly 3 and the surrounding part 12 are detachably snapped together, which enables the quick-release function of the filter bottle assembly 3 and the fixing base 1, thereby improving the ease of disassembly and assembly of the filter bottle assembly 3.

[0072] As an example, such as Figures 1 to 3 as well as Figure 6 The inner peripheral wall of the enclosure 12 is provided with a snap-fit ​​position 121 and a guide groove 122. One end of the guide groove 122 is connected to the snap-fit ​​position 121, and the other end extends to one end of the enclosure 12 away from the end 11. The outer wall of the filter bottle assembly 3 is provided with a snap-fit ​​part 311. The snap-fit ​​part 311 is installed to the snap-fit ​​position 121 via the guide groove 122 so that the filter bottle assembly 3 is assembled with the enclosure 12.

[0073] In this embodiment, the snap-fit ​​position 121 serves to hold and limit the snap-fit ​​portion 311 of the filter bottle assembly 3, and the guide groove 122 serves to guide and limit the snap-fit ​​portion 311. During installation, the filter bottle assembly 3 is installed into the snap-fit ​​position 121 via the snap-fit ​​portion 311 and the guide groove 122 to achieve assembly with the enclosure 12. During assembly, the filter bottle assembly 3 drives the second snap-fit ​​member 321 to push the first snap-fit ​​member 22 to move the water stop plate 21 to the position where the inlet 101 is open. During disassembly, the filter bottle assembly 3 slides out of the guide groove 122 via the snap-fit ​​portion 311 to achieve disassembly from the enclosure 12. During disassembly, the filter bottle assembly 3 drives the second snap-fit ​​member 321 to push the first snap-fit ​​member 22 to move the water stop plate 21 to the position where the inlet 101 is closed.

[0074] It is understandable that the filter bottle assembly 3 can be axially inserted into the snap-fit ​​position 121 along the perimeter 12, or the filter bottle assembly 3 can be circumferentially rotated to the snap-fit ​​position 121 along the perimeter 12. In this embodiment, considering that the filter bottle assembly 3 drives the water-stopping structure 2 to rotate, preferably, the guide groove 122 extends spirally along the inner peripheral wall of the perimeter 12. This design allows the filter bottle assembly 3 to be disassembled and assembled with the fixed seat 1 through rotational movement. Thus, the rotational movement of the filter bottle assembly 3 and the rotational movement of the water-stopping structure 2 can be synchronized without the need for a special additional transmission or reversing intermediate structure. This further simplifies the cooperation structure between the filter bottle assembly 3 and the water-stopping structure 2, and simplifies the overall structural layout.

[0075] Optionally, there are two or more snap-fit ​​positions 121 and two or more snap-fit ​​portions 311. The snap-fit ​​positions 121 are spaced apart around the periphery of the enclosure 12, and the snap-fit ​​portions 311 are spaced apart around the outer periphery of the filter bottle assembly 3. In this embodiment, considering that the water-stopping structure 2 needs to open the water inlet 101 and completely close the water inlet 101, in order to ensure the movement stroke of the water-stopping structure 2, it is preferable that there are two snap-fit ​​positions 121 and two snap-fit ​​portions 311. The two snap-fit ​​positions 121 are located on the radially opposite sides of the enclosure 12, and the two snap-fit ​​portions 311 are located on the radially opposite sides of the filter bottle assembly 3.

[0076] Furthermore, such as Figure 1 and Figure 6 The outer wall of the filter bottle assembly 3 is also provided with a limiting rib 312; the inner peripheral wall of the enclosure 12 is provided with a limiting groove 123; when the snap-fit ​​part 311 is installed in the snap-fit ​​position 121, the limiting rib 312 is snapped in the limiting groove 123.

[0077] This design can further improve the connection reliability between the filter bottle assembly 3 and the enclosure 12, and prevent the filter bottle assembly 3 from disengaging from the enclosure 12.

[0078] In one embodiment of this application, as Figures 1 to 5 The fixed base 1 is also provided with an outlet 102; the filter bottle assembly 3 includes a bottle body 31, a bracket 32 ​​and a filter element 33. The bottle body 31 is detachably connected to the fixed base 1; the bracket 32 ​​is installed on the bottle body 31 and is used for transmission connection with the water-stop structure 2; the filter element 33 is installed on the bracket 32, located inside the bottle body 31, and divides the inner cavity of the bottle body 31 into a first cavity and a second cavity. The first cavity is used to communicate with the inlet 101 and the second cavity is used to communicate with the outlet 102.

[0079] This embodiment illustrates the structure of the filter bottle assembly 3. The bottle body 31 forms the filtration chamber, and the bracket 32 ​​securely mounts the filter element 33. The bracket 32 ​​is installed at the opening of the bottle body 31, and the filter element 33 is mounted on the bracket 32 ​​and housed within the bottle body 31. This allows the filter element 33 to divide the inner cavity of the bottle body 31 into a first cavity and a second cavity, where the first cavity is the cavity before filtration and the second cavity is the cavity after filtration. Optionally, the filter element 33 has a ring-shaped structure, with the first cavity located on the outer side and the second cavity located on the inner side. Optionally, the bracket 32 ​​is snap-fitted to the bottle body 31, facilitating the removal of the bracket 32 ​​and filter element 33 from the bottle body 31 for easy cleaning or replacement. Optionally, the bottle body 31 has a transparent structure for easy cleaning by the user.

[0080] In this embodiment, the bottle body 31 is detachably connected to the fixed base 1. Specifically, the snap-fit ​​part 311 is provided on the outer wall of the bottle body 31, and the bottle body 31 can be assembled with the fixed base 1 through the snap-fit ​​part 311 cooperating with the snap-fit ​​position 121. The bracket 32 ​​is connected to the water-stop structure 2 through transmission. Specifically, the second holding member 321 is provided on the bracket 32. When the snap-fit ​​part 311 of the bottle body 31 moves along the guide slide groove 122 to the snap-fit ​​position 121, the bracket 32 ​​can drive the second holding member 321 to drive the first holding member 22 to move, so that the water-stop plate 21 moves to the position of opening the water inlet 101; when the snap-fit ​​part 311 of the bottle body 31 slides out along the guide slide groove 122, the bracket 32 ​​can drive the second holding member 321 to drive the first holding member 22 to move, so that the water-stop plate 21 moves to the position of closing the water inlet 101.

[0081] This utility model also proposes a water heater, which includes an inner tank and a filter device. The specific structure of the filter device is as described in the above embodiments. Since this water heater adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The inner tank is provided with an inlet pipe, an outlet pipe, and a drain pipe, and the filter device is installed in at least one of the inlet pipe, the outlet pipe, and the drain pipe.

[0082] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A filtration device, characterized in that, include: Fixed base, equipped with water inlet; The water-stopping structure is movably installed on the fixed base; as well as The filter bottle assembly is detachably installed on the fixed base and is linked with the water-stopping structure. When the filter bottle assembly and the fixed base are in the assembled state, the water-stop structure opens the water inlet to make the water inlet connected to the filter bottle assembly; When the filter bottle assembly is separated from the fixed base, the water-stopping structure closes the water inlet.

2. The filtration device as described in claim 1, characterized in that, The filter bottle assembly is connected to the water-stopping structure via a transmission connection.

3. The filtration device as described in claim 2, characterized in that, The water-stopping structure is rotatably fitted with the fixed base.

4. The filtration device as described in claim 3, characterized in that, The water-stopping structure includes a water-stopping plate that rotatably engages with the fixed base and a first retaining member disposed on the water-stopping plate; The filter bottle assembly is provided with a second retaining member, which is in transmission cooperation with the first retaining member to drive the water stop plate to rotate in order to block or open the water inlet.

5. The filtration device as described in claim 4, characterized in that, The water-stop plate has a disc-shaped structure and a water inlet. When the filter bottle assembly is in the assembled state, the water inlet is connected to the water inlet. When the filter bottle assembly is in the separated state, the water inlet and the water inlet are completely offset.

6. The filtration device as described in claim 3, characterized in that, The water-stopping structure is provided with a first limiting member, and the fixing seat is provided with a second limiting member. The second limiting member cooperates with the first limiting member to axially limit the water-stopping structure and the fixing seat.

7. The filtration device according to any one of claims 3 to 6, characterized in that, The fixing base includes: At the end, a water inlet is provided, and the water-stopping structure is rotatably fitted at the end; and The surrounding portion is connected to the periphery of the end portion; the filter bottle assembly is detachably snapped into the surrounding portion, and in the assembled state, the filter bottle assembly, the surrounding portion, and the end portion enclose to form a filter cavity.

8. The filtration device as claimed in claim 7, characterized in that, The inner wall of the enclosure is provided with a snap-fit ​​position and a guide groove, the guide groove extending from the snap-fit ​​position to one end of the enclosure away from the end of the enclosure; The filter bottle assembly is provided with a snap-fit ​​part, which is installed to the snap-fit ​​position via the guide groove so that the filter bottle assembly is assembled with the enclosure.

9. The filtration device as claimed in claim 8, characterized in that, The guide groove extends spirally along the inner peripheral wall of the enclosure.

10. The filtration device as claimed in claim 8, characterized in that, The filter bottle assembly is also provided with a limiting rib; the inner peripheral wall of the enclosure is provided with a limiting groove; When the snap-fit ​​part is installed in the snap-fit ​​position, the limiting rib is snapped into the limiting slot.

11. The filtration device according to any one of claims 1 to 6, characterized in that, The mounting base is provided with a water outlet; the filter bottle assembly includes: The bottle body is detachably connected to the mounting base; A bracket, installed on the bottle body, is used for a transmission connection with the water-stop structure; and The filter element is installed on the bracket and located inside the bottle, dividing the inner cavity of the bottle into a first cavity and a second cavity. The first cavity is connected to the water inlet, and the second cavity is connected to the water outlet.

12. A water heater, characterized in that, The device includes an inner liner and a filter device as described in any one of claims 1 to 11, wherein the inner liner is provided with an inlet pipe, an outlet pipe and a drain pipe, and the filter device is installed in at least one of the inlet pipe, the outlet pipe and the drain pipe.

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