Table type water purifier

Abstract

The table type water purifier comprises a shell, a water inlet and outlet seat arranged at the bottom of the shell and a filter element assembly detachably installed on the shell, the water inlet and outlet seat is provided with a first water way connector, the filter element assembly is provided with a second water way connector communicated with the first water way connector, and the shell is provided with a top opening. The filter element assembly is arranged in the shell from the top opening in the vertical direction or separated from the shell, the limiting ring and the shell are formed in a split mode, the limiting ring is arranged in the shell, and the limiting ring is matched with the filter element assembly in a stopping mode to limit displacement of the filter element assembly in at least one direction. Due to the fact that the shell is provided with the top opening, and the limiting ring and the shell are formed in a split mode, when the filter element assembly is overhauled or replaced, the filter element assembly can be taken out from the top opening in a lifting and pulling mode and the like, the filter element assembly does not need to be screwed, the risk that the filter element assembly is separated in the taking process is avoided, and the replacement difficulty of the filter element assembly is reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of water purification equipment, and specifically relates to a desktop water purifier. Background Art

[0002] With the continuous development of the field of water purifier equipment, in order to extend the service life of the whole water purifier, the filter element in the water purifier is generally designed as a replaceable assembly. In other words, after the water purifier has been used for a period of time, the filtering capacity of the filter element will decrease with the passage of time, but the shell and other parts of the water purifier are still within the validity period. At this time, the filter element can be replaced to restore the water purification capacity of the water purifier and extend the service life of the water purifier.

[0003] The filter element includes a bottle body and a bottle cap threadedly screwed on the bottle body. The bottle body and the waterway plate are usually installed in the body of the water purifier by means of a threaded connection. In the process of twisting the filter element to separate it from the body, it is difficult to directly hold the bottle body due to the limitation of the internal space of the body. It is necessary to hold the bottle cap part and rotate the filter element to separate the filter element from the body. This makes it easy for the bottle body and the bottle cap to separate during the process of twisting the filter element, thereby causing the filter element to loosen and increasing the difficulty of replacing the element. Utility Model Content

[0004] The present application provides a desktop water purifier to solve the problem of difficulty in replacing the filter element of the desktop water purifier.

[0005] The technical solution adopted in this application is:

[0006] A desktop water purifier comprises a shell, a water inlet and outlet seat arranged at the bottom of the shell, and a filter element assembly detachably mounted on the shell, the water inlet and outlet seat being provided with a first water channel interface, the filter element assembly being provided with a second water channel interface connected to the first water channel interface, the shell being provided with a top opening, the filter element assembly being inserted into the shell or removed from the shell from the top opening along the up and down directions, the water purifier further comprising a limit ring which is separately formed from the shell and is arranged inside the shell, the limit ring cooperating with the filter element assembly stopper to limit the displacement of the filter element assembly in at least one direction.

[0007] The desktop water purifier of the present application also includes the following additional technical features:

[0008] One of the outer wall of the limit ring and the inner wall of the shell is provided with a plurality of buckles, and the other of the two is provided with buckle positions corresponding to the buckles one by one, and the buckles and the buckle positions are stopped and limited in the up and down directions to restrict the limit ring from escaping from the shell, and the buckles and the buckle positions are arranged non-uniformly along the circumference of the limit ring and the shell.

[0009] One of the limit ring and the shell is provided with a first limit rib, and the other is provided with a first limit slot matched with the first limit rib, the first limit rib is inserted into the first limit slot along the up and down direction and the two are matched in the circumferential direction to limit the rotation of the limit ring along the circumferential direction of the shell; and / or the shell is provided with a stop surface, the limit ring is provided with a limit surface, the stop surface and the limit surface are matched in the up and down direction to limit the displacement of the limit ring along the axial direction of the shell.

[0010] The filter element assembly comprises a filter bottle and a bottle cap arranged at the bottle mouth of the filter bottle, the filter bottle is provided with a stopper extending in the transverse direction, the stopper abuts against the lower part of the bottle cap to limit the downward displacement of the bottle cap;

[0011] The limiting ring is provided with a bearing boss extending inwardly, and the stopper can abut against the upper surface of the bearing boss to limit the downward displacement of the filter bottle.

[0012] One of the supporting boss and the filter bottle is provided with a second limiting slot, and the other is provided with a second limiting rib adapted to the second limiting slot, the second limiting rib is inserted into the second limiting slot along the up and down directions and the two are matched with a circumferential stopper to limit the rotation of the filter bottle along the circumferential direction of the limiting ring.

[0013] The filter element assembly includes a filter bottle, the filter bottle is provided with a first positioning hole, the water inlet and outlet seat is provided with a second positioning hole, and the water purifier also includes a fastener, the fastener is passed through the first positioning hole and the second positioning hole along the up and down direction to connect the filter bottle and the water inlet and outlet seat.

[0014] The filter element assembly comprises a filter bottle and a bottle cap screwed on the bottle mouth of the filter bottle, and a first holding gap exists between the bottle cap and the inner wall of the limiting ring.

[0015] The housing is provided with an upper cover for opening or closing the top opening, and the upper cover is removably placed at the top opening.

[0016] The top of the shell is provided with a sunken platform which stops the upper cover to limit the downward movement of the upper cover. The upper cover includes a cover body and a stop rib fixed to the cover body and extending downward. The shell is provided with a limiting ring rib around the sunken platform which cooperates with the stop rib to limit the movement of the upper cover along the radial direction of the shell.

[0017] The limiting ring rib is provided with an avoidance gap, and the upper cover also includes a lifting portion which is fixedly connected to the cover body and extends outward to extend into the avoidance gap, and a second gripping gap is formed between the lifting portion and the inner wall of the avoidance gap.

[0018] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0019] 1. The desktop water purifier of the present application includes a shell, a filter element assembly installed on the shell, and a limit ring for limiting the displacement of the filter element assembly. By setting the limit ring, the filter element assembly is stabilized so that the filter element assembly can maintain a stable working state in the shell; in addition, since the shell is provided with a top opening and the limit ring is formed separately from the shell, when the filter element assembly is inspected or replaced, the filter element assembly can be taken out from the top opening by pulling or the like. In the process of taking out the filter element assembly, there is no need to twist the filter element assembly, which avoids the risk of separation of the filter element assembly during the removal process, which is conducive to reducing the difficulty of replacing the filter element assembly.

[0020] 2. As a preferred embodiment of the present invention, one of the outer wall of the limit ring and the inner wall of the shell is provided with a plurality of buckles, and the other of the two is provided with buckle positions corresponding to the buckles one by one, and the buckles and the buckle positions are stopped and limited in the up-down direction to limit the limit ring from coming out of the shell, and the buckles and the buckle positions are arranged non-uniformly along the circumference of the limit ring and the shell. By providing the buckles and the buckle positions, it is only necessary to align the buckles with the buckle positions and push the limit ring into the shell in the up-down direction until the buckle is buckled in the buckle position, so as to achieve the stop and limit of the limit ring in the up-down direction, that is, the installation of the limit ring is achieved by pressing the limit ring, so that the assembly of the limit ring is relatively simple; moreover, the buckles and the buckle positions are arranged non-uniformly along the circumference of the limit ring and the shell, so that each buckle is only applicable to one buckle position during the assembly process, so as to prevent the limit ring from being misplaced during the assembly process, and play a foolproof effect.

[0021] 3. As a preferred embodiment of the utility model, a first limiting rib and a first limiting slot are provided on the limiting ring and the shell, so as to stop the limiting ring from rotating along the circumferential direction of the shell, and at the same time, the first limiting slot also guides the first limiting rib to be pushed in, so that the limiting ring does not need to be precisely aligned during assembly, and the installation of the limiting ring can be achieved by pushing the first limiting rib along the first limiting slot, that is, the first limiting slot and the first limiting rib not only play the function of limiting the circumferential displacement of the limiting ring along the shell, but also play the role of guiding the installation of the limiting ring, and the functions are integrated, thereby optimizing the structural design of the limiting ring and the shell; in addition, a stop surface is provided on the shell, and a limit surface is provided on the limiting ring, and a limit stop is generated for the axial displacement of the limiting ring along the shell through the cooperation between the stop surface and the limit surface, and the movement of the limiting ring is restricted in multiple directions, so that the limiting ring can be more stably installed in the shell, thereby providing stability guarantee for the movement of the filter element assembly restricted by the limiting ring.

[0022] 4. As a preferred embodiment of the utility model, by arranging a stopper extending in the transverse direction on the filter bottle, on the one hand, it abuts against the lower part of the bottle cap to limit the downward displacement of the bottle cap, thereby limiting the vertical displacement of the bottle cap; on the other hand, by arranging an inwardly convex and extending bearing boss in the limiting ring, the bearing boss cooperates with the stopper to limit the downward displacement of the filter bottle, thereby limiting the vertical displacement of the filter bottle, thereby limiting the vertical displacement of the filter element assembly; that is, the stopper integrates the vertical limiting function of the filter element assembly on the basis of the limiting function of the bottle cap compared to the filter bottle, the functions are further integrated, and the structural design of the filter element assembly is optimized.

[0023] Furthermore, by providing a second limiting slot and a second limiting rib, the two cooperate to stop the displacement of the filter bottle in the circumferential direction, thereby stopping the displacement of the filter element assembly in the circumferential direction. On the basis of the support boss cooperating with the stop part to limit the axial displacement of the filter element assembly, the second limiting slot and the second limiting rib limit the circumferential displacement of the filter element assembly, thereby realizing the axial and circumferential displacement of the filter element assembly, so that the limiting ring can be more stably limited in the housing by the limiting ring, thereby providing guarantee for the filter element assembly to stably play a filtering role; in addition, the second limiting slot can also provide a guiding role for the insertion of the second limiting rib. The relative position of the limiting ring and the filter element assembly can be determined by simply aligning the second limiting rib with the second limiting slot, thereby improving the convenience of assembly.

[0024] 5. As a preferred embodiment of the present invention, the filter element assembly includes a filter bottle and a bottle cap screwed on the bottle mouth of the filter bottle, and a first gripping gap exists between the bottle cap and the inner wall of the limiting ring. The first gripping gap is set between the bottle cap and the inner wall of the limiting ring. When replacing the filter element assembly, the user can put his hand into the first gripping gap, hold the bottle cap tightly and lift out the filter element assembly, that is, the first gripping gap provides an operating space for lifting the filter element assembly out of the housing, which increases the convenience of replacing the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0026] Figure 1 A cross-sectional view of a desktop water purifier according to one embodiment of the present application;

[0027] Figure 2 for Figure 1 A magnified view of part A;

[0028] Figure 3 This is a schematic diagram of the structure of the lower housing in one embodiment of the present application;

[0029] Figure 4 This is a schematic structural diagram of a lower limit ring in one implementation mode of the present application;

[0030] Figure 5 This is a schematic diagram of the structure of a filter bottle in one embodiment of the present application;

[0031] Figure 6 This is a schematic diagram of the structure of the lower cover in one embodiment of the present application;

[0032] Figure 7 This is a schematic diagram of the structure of the water inlet and outlet seat in one implementation mode of the present application;

[0033] Figure 8 This is a schematic diagram of the structure of a desktop water purifier in one embodiment of the present application;

[0034] Fig. 9 for Figure 8 Enlarged view of part B.

[0035] List of reference numerals:

[0036] 1 housing, 11 stop surface, 12 buckle position, 13 first limit slot, 14 sink, 15 limit ring rib, 151 avoidance gap, 16 water inlet and outlet seat, 161 second positioning hole;

[0037] 2 filter element assembly, 21 filter bottle, 211 stopper, 212 second limiting convex rib, 213 first positioning hole, 22 bottle cap;

[0038] 3 limiting ring, 31 limiting surface, 32 bearing boss, 33 buckle, 34 first limiting convex rib, 35 second limiting slot;

[0039] 4. First grip gap;

[0040] 5. Second grip gap;

[0041] 6 upper cover, 61 stop rib, 62 lifting part. DETAILED DESCRIPTION

[0042] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0043] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.

[0044] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0045] In this application, 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, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0047] like Figures 1 to 9 As shown, a desktop water purifier includes a shell 1, a water inlet and outlet seat 16 arranged at the bottom of the shell 1, and a filter element assembly 2 detachably installed on the shell 1, the water inlet and outlet seat 16 is provided with a first water channel interface, and the filter element assembly 2 is provided with a second water channel interface connected to the first water channel interface, and is characterized in that the shell 1 is provided with a top opening, and the filter element assembly 2 is installed into the shell 1 or removed from the shell 1 along the top opening in the up and down directions, and the water purifier also includes a limit ring 3 which is separately molded from the shell 1 and arranged inside the shell 1, and the limit ring 3 cooperates with the filter element assembly 2 stop to limit the displacement of the filter element assembly 2 in at least one direction.

[0048] The desktop water purifier of the present application includes a shell 1, a filter element assembly 2 installed on the shell 1, and a limit ring 3 for limiting the displacement of the filter element assembly 2. By setting the limit ring 3, the filter element assembly 2 is stabilized, so that the filter element assembly 2 can maintain a stable working state in the shell 1; in addition, since the shell 1 is provided with a top opening and the limit ring 3 is formed separately from the shell 1, when the filter element assembly 2 is inspected or replaced, the filter element assembly 2 can be taken out from the top opening by pulling or the like. In the process of taking out the filter element assembly 2, there is no need to screw the filter element assembly 2, which avoids the risk of separation of the filter element assembly 2 during the removal process, which is conducive to reducing the difficulty of replacing the filter element assembly 2.

[0049] The present application does not limit the fixing method between the limiting ring 3 and the housing 1, and any one of the following embodiments may be adopted:

[0050] Implementation method 1: Figure 3 , Figure 4 As shown, one of the outer wall of the limit ring 3 and the inner wall of the shell 1 is provided with a plurality of buckles 33, and the other one is provided with buckle positions 12 corresponding to the buckles 33 one by one, and the buckles 33 and the buckle positions 12 are stopped and limited in the up and down directions to restrict the limit ring 3 from escaping from the shell 1, and the buckles 33 and the buckle positions 12 are arranged non-uniformly along the circumference of the limit ring 3 and the shell 1. Figure 3 , Figure 4 The figure schematically shows that the buckle 33 is arranged on the limit ring 3, and the buckle position 12 is arranged on the shell 1. By setting the buckle 33 and the buckle position 12, it is only necessary to align the buckle 33 with the buckle position 12 and push the limit ring 3 into the shell 1 along the up and down directions until the buckle 33 is buckled in the buckle position 12, thereby realizing the stop limit of the limit ring 3 along the up and down directions, that is, the installation of the limit ring 3 is achieved by pressing the limit ring 3, so that the assembly of the limit ring 3 is relatively simple; moreover, the buckle 33 and the buckle position 12 are arranged in an uneven manner along the circumference of the limit ring 3 and the shell 1, so that each buckle 33 is only applicable to one buckle position 12 during the assembly process, thereby preventing the limit ring 3 from being misplaced during the assembly process, and achieving a fool-proof effect.

[0051] Embodiment 2: One of the limiting ring 3 and the outer shell 1 is provided with a first limiting rib 34, and the other is provided with a first limiting slot 13 adapted to the first limiting rib 34, the first limiting rib 34 is inserted into the first limiting slot 13 along the up and down directions, and the two are matched with a circumferential stopper to limit the rotation of the limiting ring 3 along the circumferential direction of the outer shell 1.

[0052] Embodiment 3: the housing 1 is provided with a stop surface 11 , the limit ring 3 is provided with a limit surface 31 , the stop surface 11 and the limit surface 31 are matched with each other in the up and down directions to limit the displacement of the limit ring 3 along the axial direction of the housing 1 .

[0053] Implementation method 4: Figures 2 to 4 As shown, one of the limit ring 3 and the shell 1 is provided with a first limit rib 34, and the other is provided with a first limit slot 13 adapted to the first limit rib 34, the first limit rib 34 is inserted into the first limit slot 13 along the up and down direction and the two are matched in the circumferential direction to limit the rotation of the limit ring 3 along the circumferential direction of the shell 1; the shell 1 is provided with a stop surface 11, and the limit ring 3 is provided with a limit surface 31, and the stop surface 11 and the limit surface 31 are matched in the up and down direction to limit the displacement of the limit ring 3 along the axial direction of the shell 1.

[0054] Figures 2 to 4 The figure schematically shows a design in which the first limiting rib 34 is arranged on the limiting ring 3 and the first limiting slot 13 is arranged on the shell 1. By arranging the first limiting rib 34 and the first limiting slot 13 on the limiting ring 3 and the shell 1, the limiting ring 3 is prevented from rotating along the circumferential direction of the shell 1. At the same time, the first limiting slot 13 also serves to guide the first limiting rib 34 to be pushed in, so that the limiting ring 3 does not need to be precisely aligned during assembly. The first limiting rib 34 can be installed by pushing it along the first limiting slot 13. That is, the first limiting slot 13 and the first limiting rib 34 not only limit the limiting ring 3 along the shell 1, but also prevent the limiting ring 3 from rotating along the circumferential direction of the shell 1. In addition to the function of circumferential displacement, it also plays a role in guiding the installation of the limit ring 3, with integrated functions, and optimizing the structural design of the limit ring 3 and the housing 1; in addition, a stop surface 11 is provided on the housing 1, and a limit surface 31 is provided on the limit ring 3, and a limit stop is generated for the axial displacement of the limit ring 3 along the housing 1 through the cooperation of the stop surface 11 and the limit surface 31, and the movement of the limit ring 3 is restricted in multiple directions, so that the limit ring 3 can be more stably installed in the housing 1, thereby providing stability guarantee for the limit ring 3 to restrict the movement of the filter element assembly 2, and the displacement of the limit ring 3 along the axial and circumferential directions under this embodiment is restricted, and the installation is stable.

[0055] As a preferred implementation of the present application, Figure 1 , Figure 4 , Figure 5 As shown, the filter element assembly 2 includes a filter bottle 21 and a bottle cap 22 arranged at the bottle mouth of the filter bottle 21, the filter bottle 21 is provided with a stop portion 211 extending in the transverse direction, the stop portion 211 abuts against the lower portion of the bottle cap 22 to limit the downward displacement of the bottle cap 22; the limiting ring 3 is provided with a bearing boss 32 protruding and extending inwardly, the stop portion 211 can abut against the upper surface of the bearing boss 32 to limit the downward displacement of the filter bottle 21.

[0056] By providing a stopper 211 extending in the transverse direction on the filter bottle 21, on the one hand, it abuts against the lower part of the bottle cap 22 to limit the downward displacement of the bottle cap 22, thereby limiting the vertical displacement of the bottle cap 22; on the other hand, by providing an inwardly convex and extending bearing boss 32 in the limiting ring 3, the bearing boss 32 cooperates with the stopper 211 to limit the downward displacement of the filter bottle 21, thereby limiting the vertical displacement of the filter bottle 21, thereby limiting the vertical displacement of the filter element assembly 2; that is, the stopper 211 integrates the vertical limiting function of the filter element assembly 2 on the basis of the limiting function of the bottle cap 22 relative to the filter bottle 21, the functions are further integrated, and the structural design of the filter element assembly 2 is optimized. Preferably, the bottle cap 22 is connected to the filter bottle 21 by a threaded connection, which is convenient for disassembly and assembly, and simple for assembly. By providing a stopper 211, when the bottle cap 22 is screwed to a corresponding position, it abuts against the stopper 211, thereby preventing the bottle cap 22 or the filter bottle 21 from being damaged due to excessive twisting of the bottle cap 22.

[0057] As a preferred embodiment of this implementation, Figure 4 , Figure 5 As shown, one of the supporting boss 32 and the filter bottle 21 is provided with a second limiting slot 35, and the other is provided with a second limiting rib 212 adapted to the second limiting slot 35, the second limiting rib 212 is inserted into the second limiting slot 35 along the up and down directions and the two are matched with each other in the circumferential direction to limit the rotation of the filter bottle 21 along the circumferential direction of the limiting ring 3.

[0058] The figure schematically shows that the second limiting slot 35 is arranged on the limiting ring 3, and the second limiting rib 212 is arranged on the filter bottle 21. By setting the second limiting slot 35 and the second limiting rib 212, the two cooperate to stop the displacement of the filter bottle 21 in the circumferential direction, thereby stopping the displacement of the filter element assembly 2 in the circumferential direction. On the basis that the bearing boss 32 cooperates with the stopper 211 to limit the axial displacement of the filter element assembly 2, the second limiting slot 35 and the second limiting rib 212 limit the filter element assembly 2 in the axial direction. The core assembly 2 is displaced circumferentially, thereby realizing the axial and circumferential displacement of the filter element assembly 2, so that the limiting ring 3 can be more stably limited in the housing 1 by the limiting ring 3, thereby providing guarantee for the filter element assembly 2 to stably play a filtering role; in addition, the second limiting slot 35 can also provide guidance for the insertion of the second limiting rib 212, and the relative position of the limiting ring 3 and the filter element assembly 2 can be determined by simply aligning the second limiting rib 212 with the second limiting slot 35, thereby improving the convenience of assembly.

[0059] As a preferred implementation of the present application, Figure 1 , Figure 5 , Figure 7As shown, the filter element assembly 2 includes a filter bottle 21, the filter bottle 21 is provided with a first positioning hole 213, the water inlet and outlet seat 16 is provided with a second positioning hole 161, and the water purifier further includes a fastener, the fastener is penetrated in the first positioning hole 213 and the second positioning hole 161 along the up and down direction to connect the filter bottle 21 and the water inlet and outlet seat 16. The filter element assembly 2 is fixed to the water inlet and outlet seat 16 at the bottom of the housing 1 by the fastener, so as to realize the connection between the filter element assembly 2 and the housing 1, and on this basis, the filter element assembly 2 is limited in at least one direction by the limiting ring 3, so that the stability of the filter element assembly 2 in the housing 1 is further improved. Preferably, the first positioning hole 213 and the second positioning hole 161 can be set as threaded holes, and the fastener is set as a screw. The filter element assembly 2 is fixed by screwing the screw into the first positioning hole 213 and the second positioning hole 161, which has the advantages of convenient and quick disassembly and assembly, and reduces the difficulty of assembling the filter element assembly 2.

[0060] The present application does not limit the method for taking the filter element assembly 2, and any of the following embodiments may be adopted:

[0061] Embodiment 5: The filter element assembly includes a filter bottle and a bottle cap screwed on the bottle mouth of the filter bottle. A handle is provided on the top of the bottle cap 22, and the user can pull the filter element assembly out of the housing by pulling the handle.

[0062] Implementation method six: Figure 1 As shown, the filter element assembly 2 includes a filter bottle 21 and a bottle cap 22 screwed at the bottle mouth of the filter bottle 21, and there is a first gripping gap 4 between the bottle cap 22 and the inner wall of the limiting ring 3. The first gripping gap 4 is set between the bottle cap 22 and the inner wall of the limiting ring 3. When replacing the filter element assembly 2, the user can put his hand into the first gripping gap 4 and then hold the bottle cap 22 and lift the filter element assembly 2, that is, the first gripping gap 4 provides an operating space for the filter element assembly 2 to lift the housing 1, which increases the convenience of filter element replacement. Compared with the fifth embodiment, this embodiment does not need to set a handle above the bottle cap 22, shortens the volume occupied by the filter element assembly 2 along the axial direction of the housing 1, thereby reducing the occupation of the axial space of the housing 1 by the filter element assembly 2, which is conducive to the miniaturization of the water purifier. Moreover, under the external limiting condition of the same axial size, the axial size of the filter bottle 21 can be increased to a certain extent, thereby achieving large-flux water filtration and improving filtration efficiency.

[0063] As a preferred implementation of the present application, Figure 8 As shown, the housing 1 is provided with an upper cover 6 for opening or closing the top opening, and the upper cover 6 is placed at the top opening in a removable manner. By providing the upper cover 6, it is possible to block external dust and other debris, and prevent dust and the like from entering the housing 1 to affect the normal operation of the filter element assembly 2. The upper cover 6 is arranged to be removable, so that the user can easily replace the filter element assembly 2 after taking the upper cover 6.

[0064] This embodiment does not limit the connection method between the upper cover 6 and the housing 1, and it can adopt any one of the following embodiments:

[0065] Embodiment 1: Figure 3 , Figure 6 As shown, the top of the housing 1 is provided with a sinking platform 14 which stops the upper cover 6 to limit the downward movement of the upper cover 6. The upper cover 6 includes a cover body and a stop rib 61 which is fixedly connected to the cover body and extends downward. The housing 1 is provided with a limit ring rib 15 around the sinking platform 14 which cooperates with the stop rib 61 to limit the movement of the upper cover 6 in the radial direction of the housing 1. By providing the sinking platform 14, the displacement of the upper cover 6 in the vertical direction is limited, so that the upper cover 6 is stably placed above the sinking platform 14. The stop rib 61 cooperates with the design of the limit rib to limit the displacement of the upper cover 6 in the radial direction of the housing 1, that is, the sinking platform 14 has the function of limiting the displacement of the upper cover 6 in the vertical direction and the radial direction of the housing 1. The structural design is simple. When the top opening needs to be opened, only the upper cover 6 needs to be lifted. The upper cover 6 is easy to cover and close, which helps to improve the efficiency of replacing the filter element assembly 2.

[0066] This embodiment does not limit the lifting method of the upper cover 6, and it can adopt any one of the following examples:

[0067] Example 1: A handle is provided on the top of the upper cover, and the user can open the upper cover by pulling the handle.

[0068] Example 2: If Figure 3 , Figure 6 , Fig. 9 As shown, the rib 15 of the limit ring 3 is provided with an avoidance gap 151, and the upper cover 6 also includes a lifting portion 62 that is fixedly connected to the cover body and extends outward to extend into the avoidance gap 151, and a second gripping gap 5 is formed between the lifting portion 62 and the inner wall of the avoidance gap 151. The second gripping gap 5 provides an operating space for the user to lift the upper cover 6. The user can open the upper cover 6 by inserting a finger into the second gripping gap 5 and pressing the lifting portion 62. Compared with Example 1, the opening method of the upper cover 6 in this example avoids setting a handle at the top of the upper cover 6. The second gripping gap 5 is hidden between the upper cover 6 and the shell 1. The integrity and integration of the upper cover 6 are stronger, the appearance effect is better, and the abrupt feeling brought by the handle at the top of the upper cover 6 is avoided.

[0069] Embodiment 2: One of the upper cover and the outer shell is provided with a buckle, and the other of the two is provided with a hook adapted to the buckle, and the upper cover is fixed to the outer shell by the buckle and the hook.

[0070] Embodiment 3: One of the upper cover and the outer shell is provided with a magnetic member, and the other of the two is provided with a matching member that magnetically cooperates with the magnetic member, and the upper cover is fixed to the outer shell through the magnetic cooperation between the magnetic member and the matching member.

[0071] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0072] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0073] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A desktop water purifier, comprising a housing, a water inlet and outlet seat arranged at the bottom of the housing, and a filter element assembly detachably mounted on the housing, wherein the water inlet and outlet seat is provided with a first water channel interface, and the filter element assembly is provided with a second water channel interface connected to the first water channel interface, characterized in that: The shell is provided with a top opening, and the filter element assembly is installed into the shell or removed from the shell along the top opening in the up and down directions. The water purifier also includes a limit ring which is separately molded from the shell and arranged inside the shell, and the limit ring cooperates with the filter element assembly stopper to limit the displacement of the filter element assembly in at least one direction.

2. A desktop water purifier according to claim 1, characterized in that: One of the outer wall of the limit ring and the inner wall of the shell is provided with a plurality of buckles, and the other of the two is provided with buckle positions corresponding to the buckles one by one, and the buckles and the buckle positions are stopped and limited in the up and down directions to restrict the limit ring from escaping from the shell, and the buckles and the buckle positions are arranged non-uniformly along the circumference of the limit ring and the shell.

3. A desktop water purifier according to claim 1, characterized in that: One of the limiting ring and the shell is provided with a first limiting rib, and the other of the limiting ring and the shell is provided with a first limiting slot adapted to the first limiting rib, the first limiting rib is inserted into the first limiting slot along the up-down direction and the two are matched with each other along the circumferential direction to limit the rotation of the limiting ring along the circumferential direction of the shell; and / or, The shell is provided with a stop surface, and the limiting ring is provided with a limit surface. The stop surface and the limit surface are matched with each other in a stop manner in the up and down directions to limit the displacement of the limit ring along the axial direction of the shell.

4. A desktop water purifier according to claim 1, characterized in that: The filter element assembly comprises a filter bottle and a bottle cap arranged at the bottle mouth of the filter bottle, the filter bottle is provided with a stopper extending in the transverse direction, the stopper abuts against the lower part of the bottle cap to limit the downward displacement of the bottle cap; The limiting ring is provided with a bearing boss extending inwardly, and the stopper can abut against the upper surface of the bearing boss to limit the downward displacement of the filter bottle.

5. A desktop water purifier according to claim 4, characterized in that: One of the supporting boss and the filter bottle is provided with a second limiting slot, and the other is provided with a second limiting rib adapted to the second limiting slot, the second limiting rib is inserted into the second limiting slot along the up and down directions and the two are matched with a circumferential stopper to limit the rotation of the filter bottle along the circumferential direction of the limiting ring.

6. A desktop water purifier according to claim 1, characterized in that: The filter element assembly includes a filter bottle, the filter bottle is provided with a first positioning hole, the water inlet and outlet seat is provided with a second positioning hole, and the water purifier also includes a fastener, the fastener is passed through the first positioning hole and the second positioning hole along the up and down direction to connect the filter bottle and the water inlet and outlet seat.

7. A desktop water purifier according to claim 1, characterized in that: The filter element assembly comprises a filter bottle and a bottle cap screwed on the bottle mouth of the filter bottle, and a first holding gap exists between the bottle cap and the inner wall of the limiting ring.

8. A desktop water purifier according to claim 1, characterized in that: The housing is provided with an upper cover for opening or closing the top opening, and the upper cover is removably placed at the top opening.

9. A desktop water purifier according to claim 8, characterized in that: The top of the shell is provided with a sunken platform which stops the upper cover to limit the downward movement of the upper cover. The upper cover includes a cover body and a stop rib fixed to the cover body and extending downward. The shell is provided with a limiting ring rib around the sunken platform which cooperates with the stop rib to limit the movement of the upper cover along the radial direction of the shell.

10. A desktop water purifier according to claim 9, characterized in that: The limiting ring rib is provided with an avoidance gap, and the upper cover also includes a lifting portion which is fixedly connected to the cover body and extends outward to extend into the avoidance gap, and a second gripping gap is formed between the lifting portion and the inner wall of the avoidance gap.

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