A water purifier

Abstract

The water purifier comprises a shell assembly, a waterway unit and a filter core; the waterway unit is communicated with the filter core, and the inlet and outlet thereof are connected to the outside of the shell assembly; the shell assembly is provided with an insertion opening; the filter core comprises a locking assembly; the locking assembly comprises a first sliding piece, a second sliding piece and an elastic piece; the first sliding piece slides along the radial direction of the insertion opening; after the filter core is inserted into the shell assembly through the insertion opening, the first sliding piece is located at the outside of the filter core and abuts against the inner side surface of the shell assembly under the action of no external force; the elastic piece abuts against one side of the first sliding piece; when the first sliding piece slides to the inside of the filter core, the elastic piece generates elastic force in the direction opposite to the sliding direction of the first sliding piece; the second sliding piece is engaged with the first sliding piece; when the second sliding piece moves axially away from the first sliding piece along the insertion opening, the second sliding piece slides on the first sliding piece and pushes the first sliding piece to the inside of the filter core. Compared with the prior art, the filter core of the water purifier is convenient to replace and good in installation.

Description

Technical Field

[0001] This invention relates to the field of water purification technology, and in particular to a water purifier. Background Technology

[0002] Water is the source of life, and people's daily lives are inseparable from it. Pure, impurity-free water not only ensures good health but also improves the quality of life. To meet people's need for pure water, water purifiers have emerged. After water is passed into a water purifier, the filter material filters the water, causing impurities such as floating matter, heavy metals, sediment, and even bacteria to remain in the filter material. The water after removing impurities is then provided to the user, thus achieving water purification.

[0003] However, if impurities accumulate on the filter media for a long time without being cleaned, they can pollute the water and affect water quality. Therefore, the filter media needs to be replaced regularly. On the other hand, due to structural requirements, the filter cartridge, which houses the filter media, is usually located inside the water purifier. When replacing the filter media, the filter cartridge needs to be removed. Currently, the most common way to fix the filter cartridge is through a threaded connection with other components of the water purifier. Installing and removing the filter cartridge requires constant rotation, resulting in poor ease of installation and removal and low efficiency. Summary of the Invention

[0004] Therefore, the purpose of this invention is to provide a water purifier that improves the convenience of filter replacement.

[0005] The technical solution adopted in this invention is as follows:

[0006] A water purifier includes a housing assembly, a water circuit unit, and a filter element; the water circuit unit communicates with the filter element, and its inlet and outlet are connected to the outside of the housing assembly; the housing assembly has an insertion port; the filter element includes a locking component at one end; the locking component includes a first sliding member, a second sliding member, and an elastic member; the first sliding member slides radially along the insertion port to extend and retract between the outside and inside of the filter element; after the filter element is inserted into the housing assembly through the insertion port, the first sliding member, when no external force is applied, is located on the outside of the filter element and abuts against the inner surface of the housing assembly; the elastic member abuts against one side of the first sliding member; when the first sliding member slides towards the inside of the filter element, the elastic member generates a spring force opposite to the sliding direction of the first sliding member; the second sliding member engages with the first sliding member, and when the second sliding member moves axially away from the first sliding member along the insertion port, the second sliding member slides on the first sliding member and pushes the first sliding member towards the inside of the filter element.

[0007] Compared with the prior art, the water purifier of the present invention, through the mutual cooperation of the sliding first sliding member and the second sliding member, allows the filter element to be installed in the housing assembly by only applying pressure along the axial direction of the insertion port during installation, and the filter element and the housing assembly are automatically locked; during disassembly, only the pulling force along the axial direction of the insertion port is applied to release the lock between the filter element and the housing assembly. The filter element can be installed and removed by pressing and pulling, thereby simplifying the installation and removal of the filter element and improving the convenience of filter element replacement.

[0008] Furthermore, the first sliding member has a sliding surface, a first inclined surface, and a contact surface; the sliding surface is parallel to the radial direction of the insertion port; the first inclined surface faces outward of the first sliding member and is inclinedly connected to one end of the sliding surface; the contact surface is connected to the other end of the sliding surface and is perpendicular to the sliding surface; the elastic member abuts against the contact surface, and its elastic force direction is perpendicular to the contact surface and points towards the first inclined surface; projected along a direction that is parallel to both the radial direction of the insertion port and the sliding surface, the distance from the contact surface to the first inclined surface gradually increases along the elastic force direction in a direction perpendicular to and away from the sliding surface. Through the cooperation of the first inclined surface and the elastic member, the filter element is automatically locked.

[0009] Furthermore, the first sliding member also has a second inclined surface; projected along a direction parallel to the insertion port and the sliding surface, the distance from the abutment surface to the second inclined surface along the elastic direction gradually increases in a direction perpendicular to and away from the sliding surface; the second sliding member has a third inclined surface, the third inclined surface facing the second inclined surface, when the second sliding member moves axially away from the first sliding member along the insertion port, the third inclined surface slides on the second inclined surface and pushes the first sliding member towards the inside of the filter element. The cooperation between the second and third inclined surfaces achieves locking of the filter element on the housing assembly.

[0010] Furthermore, the locking assembly also includes a handle; the handle is hinged to the second slider, and the axial direction of the hinge axis is parallel to the sliding direction of the first slider, thereby improving the convenience of lifting the second slider.

[0011] Furthermore, the housing assembly includes a front panel and a housing; the front panel covers one side of the housing; the insertion port is opened on the front panel; the water channel unit is fixed inside the housing to facilitate the installation and removal of the filter element.

[0012] Furthermore, it also includes a filter element support; the filter element support is fixed inside the housing and sleeves the outside of the filter element. The filter element support provides support for the filter element, improving its stability inside the housing.

[0013] Furthermore, the filter element is provided with a limiting post and a limiting hole on the side facing away from the insertion port and on the side of the housing assembly opposite to the front panel, respectively; after the filter element is inserted into the housing, the limiting post is inserted into the limiting hole, thereby better positioning the filter element on the housing assembly.

[0014] Furthermore, the filter element also includes a filter element housing and a sealing plug; one end of the filter element housing has an opening; the sealing plug plugs the opening; the locking assembly is fixed to the sealing plug, and the first sliding member is located outside the side wall of the filter element housing when no external force is applied. The sealing performance of the filter element is improved by the sealing plug and the filter element housing.

[0015] Furthermore, the elastic element is a spring.

[0016] Furthermore, there are two first sliding members, which are arranged radially opposite to each other along the insertion port to improve the locking force of the filter element on the housing assembly.

[0017] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the water purifier in this invention;

[0019] Figure 2 This is an exploded view of the water purifier in this invention;

[0020] Figure 3 This is a bottom view of the filter element of the present invention;

[0021] Figure 4 This is a partial schematic diagram of the mounting plate projected along the extension direction of the filter element shell in this invention;

[0022] Figure 5 This is a schematic diagram of the overall structure of the filter element in this invention;

[0023] Figure 6 This is a top view of the filter element in this invention;

[0024] Figure 7 For along Figure 6 A cross-sectional view of the filter element taken along the center line (ZZ section).

[0025] Figure 8 For along Figure 6 A cross-sectional view of the filter element taken along the center line (YY section).

[0026] Figure 9 This is a schematic diagram of the overall structure of the locking component in this invention;

[0027] Figure 10This is a schematic diagram of the overall structure of the locking component after the box cover is removed in this invention;

[0028] Figure 11 This is a front sectional view of the locking component in this invention;

[0029] Figure 12 This is a schematic diagram of the overall structure of the first sliding member in this invention;

[0030] Figure 13 This is a front view of the first slider in this invention;

[0031] Figure 14 This is a schematic diagram of the overall structure of the second sliding member in this invention.

[0032] Figure 15 This is a schematic diagram of the overall structure of the fixing plate in this invention;

[0033] Figure 16 This is a schematic diagram of the overall structure of the box lid in this invention;

[0034] Figure 17 This is a partial front sectional view of the water purifier after the filter element is inserted into the front panel in this invention;

[0035] Figure 18 This is a partial front sectional view of the water purifier when the handle is pulled away from the fixed plate in this invention. Detailed Implementation

[0036] Please refer to the following: Figure 1 and Figure 2This invention provides a water purifier, including a housing 10, a back panel 20 covering one side of the housing 10, a front panel 30 covering the other side of the housing 10 and opposite to the back panel 20, a water circuit unit 40, a filter element 50, and a filter element support 60. The housing 10, the back panel 20, and the front panel 30 form a housing assembly (not labeled) that encloses the water circuit unit 40, the filter element 50, and the filter element support 60 within it. The filter element support 60 is fixed inside the housing 10 and supports the filter element 50. The inlet and outlet of the water circuit unit 40 are both connected to the outside of the housing 10 for user water access. The filter element 50 is connected to the water circuit unit 40. Water flowing into the inlet of the water circuit unit 40 passes through the filter element 50 and flows out from the outlet of the water circuit unit 40. In this embodiment, a circular insertion port 31 is provided on the front panel 30. The filter element 50 is cylindrical, and there are two of them. Accordingly, the filter element holder 60 is provided with two support portions 61 that are cylindrical shells. The water circuit unit 40 includes a mounting plate 41 and a mounting base 42 located on the mounting plate 41. The support portion 61 connects the mounting base 42 and the insertion port 31. In use, the filter element 50 is inserted into the insertion port 31, the support portion 61 is sleeved on the filter element 50, and the filter element 50 is inserted into the mounting base 42 for fixation. Further, please refer to... Figure 3 and Figure 4 The filter element 50 has a limiting post 51 and a limiting hole 411 respectively on one end face of the filter element 50 facing the mounting plate 41 and on the side of the mounting plate 41 facing the filter element 50. The limiting post 51 is inserted into the limiting hole 411 to facilitate positioning of the filter element 50 when it is inserted into the mounting base 42, so that the inlet and outlet of the filter element 50 can be better connected to the water circuit unit 40. The limiting post 51 protrudes outward along the axial direction of the filter element 50. Correspondingly, the axis of the limiting hole 411 is parallel to the limiting post 51. In this embodiment, the limiting post 51 is provided on one end face of the filter element 50 facing the mounting plate 41, and the limiting hole 411 is provided on the side of the mounting plate 41 facing the filter element 50. If necessary, the limiting post 51 can also be provided on the mounting plate 41, and the limiting hole 411 can be provided on the filter element 50. In addition, depending on actual needs, an insertion port for inserting the filter element 50 can be opened on the outer shell 10 or the back plate 20 to facilitate the installation and removal of the filter element 50.

[0037] Please refer to Figures 5 to 8The filter element 50 includes a filter element housing 52, a locking assembly 53, a filter material 54, and a sealing plug 55. The filter material 54 is placed inside the filter element housing 52. The filter element housing 52 has an inlet and outlet. Water entering the filter element housing 52 from the water circuit unit 40 is filtered by the filter material 52, discharged from the filter element housing 52, and flows back into the water circuit unit 40 for supply to the user. The sealing plug 55 is inserted into and fixed to the filter element housing 52 to seal the filter material 52 inside the filter element housing 52. The locking assembly 53 covers the sealing plug 55. When the filter element 50 is pressed into the front panel 30, the locking assembly 51 is located on the side closer to the front panel 30 and elastically extends and retracts to engage with the inner side of the front panel 30, so that the filter element 50 cannot move away from the mounting base 42. When the filter element 50 is pulled out along its axial direction away from the front panel 30, the locking component 51 elastically extends and retracts and separates from the front panel 30, so that the filter element 50 can move away from the mounting base 42.

[0038] Specifically, in this embodiment, the filter cartridge housing 52 is provided with an opening 521, an inlet 522, a guide tube 523, and an outlet 524. The filter cartridge housing 52 is cylindrical, the insertion port 31 is circular, the outer diameter of the filter cartridge housing 52 is less than or equal to the aperture of the insertion port 31, and the axial direction of the filter cartridge housing 52 is parallel to the axial direction of the insertion port 31. Along the extending direction of the filter cartridge housing 52, the opening 521 is formed on one side of the filter cartridge housing 52 and faces the front panel 30, and the sealing plug 55 blocks the opening 521. The locking component 53 covers the sealing plug 55. The inlet 522 and the outlet 524 are formed at the other end of the filter cartridge housing 52. The guide tube 523 communicates with the outlet 524 and extends inside the filter cartridge housing 52 along the axial direction of the filter cartridge housing 52 in a direction away from the outlet 524. A gap exists between the sealing plug 55 and the guide tube 523, which separates the internal space of the filter cartridge housing 52. The filter material 54 is located between the inner wall of the filter cartridge housing 52 and the outer wall of the guide tube 523. The water inlet 522 is located between the inner wall of the filter cartridge housing 52 and the outer wall of the guide tube 523, and leads to the filter material 54. Water enters the filter cartridge housing 52 through the water inlet 522 and flows through the filter material 54 to one end of the locking assembly 53 for filtration. Then, it enters the guide tube 523 through the gap between the locking assembly 53 and the guide tube 523, and flows out of the filter cartridge 50 through the water outlet 524.

[0039] Please refer to the following: Figures 9 to 11The locking assembly 53 includes a cover 531, a fixing plate 532, a first sliding member 533, a second sliding member 534, an elastic member 535, and a handle 536. The cover 531 covers one side of the fixing plate 532, forming a receiving space (not labeled) to accommodate the first sliding member 533, the second sliding member 534, and the elastic member 535. The side of the fixing plate 532 facing away from the cover 531 faces the opening 521 and is fixed to the sealing plug 55 by screws or adhesive, etc., and its plate surface is radially parallel to the insertion port 31. Preferably, the outer diameter D2 of the fixing plate 532 is greater than or equal to the outer diameter D1 of the opening 521, and the normal of the plate surface of the fixing plate 532 is parallel to the axial direction of the opening 521, so that the fixing plate 532 and the opening 521 form an interference fit to improve the sealing performance of the opening 521. The first sliding member 533 and the second sliding member 534 are disposed between the cover 531 and the fixing plate 532. The first sliding member 533 slides on the surface of the fixing plate 532 in a direction parallel to the plate surface and extends and retracts between the inner and outer sides of the receiving space. When no external force is applied, the first sliding member 533 extends beyond the cover 531 and the filter cartridge housing 52. The elastic member 535 abuts against the first sliding member 533. When the first sliding member 533 moves into the cover 531, the elastic member 535 is compressed, and its elastic force direction is parallel to the surface of the fixing plate 532 and opposite to the movement direction of the first sliding member 533, so as to facilitate the reset of the first sliding member 533. The second sliding member 534 engages with the first sliding member 533. When the second sliding member 534 moves in a direction perpendicular to the surface of the fixed plate 532 and away from the fixed plate 532, it drives the first sliding member 533 to move in a direction parallel to the surface of the fixed plate 532 toward the inside of the box cover 531. The handle 536 is located on the outside of the box cover 531 and is mounted on the second sliding member 534. By pulling the handle 536 in a direction perpendicular to the surface of the fixed plate 532 and away from the fixed plate 532, the second sliding member 534 is moved away from the fixed plate 532.

[0040] Please see Figure 12 and Figure 13The first sliding member 533 is provided with a sliding surface 5331, a first inclined surface 5332, a second inclined surface 5333, and an abutment surface 5334. The sliding surface 5331 faces the fixed plate 532 and is parallel to it. The first inclined surface 5332 is obliquely connected to one end of the sliding surface 5331 and faces outward of the first sliding member 533. When the first sliding member 533 slides, the first inclined surface 5332 moves between the outer and inner sides of the cover 531. The abutment surface 5334 is connected to the other end of the sliding surface 5331 opposite to the first inclined surface 5332. The abutment surface 5334 is perpendicular to the sliding surface 5331 and faces outward of the first sliding member 533. The elastic member 535 abuts against the abutment surface 5334. Preferably, when the elastic member 535 is compressed and deformed, the direction of the elastic force generated is perpendicular to the abutment surface 5334 and points towards the first inclined surface 5332. Projecting along a direction parallel to both the sliding surface 5331 and the contact surface 5334, in a direction perpendicular to and away from the sliding surface 5331, the minimum distance from the contact surface 5334 to the first inclined surface 5332 in the direction parallel to the elastic force gradually increases; that is, the angle between the normal of the first inclined surface 5332 and the normal of the sliding surface 5331 is an acute angle. The second inclined surface 5333 is obliquely connected to the sliding surface 5331. Projecting along a direction parallel to both the sliding surface 5331 and the contact surface 5334, the second inclined surface 5333 is located between the first inclined surface 5332 and the contact surface 5334. In a direction perpendicular to and away from the sliding surface 5331, the minimum distance from the contact surface 5334 to the second inclined surface 5333 gradually increases. Preferably, the first inclined surface 5332 and the second inclined surface 5333 are parallel to each other to facilitate shaping. Furthermore, the elastic element 535 is a spring, or it can be made of a material capable of elastic deformation, such as rubber. The abutment surface 5334 is provided with a guide post 5335 protruding along the normal direction of the abutment surface 5334. The elastic element 535 is sleeved on the outside of the guide post 5335 for positioning. Furthermore, there are two of each of the second inclined surface 5333 and the guide post 5335, projected along a direction perpendicular to the sliding surface 5331. The second inclined surface 5333 and the guide post 5335 are symmetrically arranged on opposite sides of the first sliding element 533 with a straight line perpendicular to the abutment surface 5334 as the axis of symmetry.

[0041] Please see Figure 14The second sliding member 534 comprises a main body 5341, a third inclined surface 5342, and a handle mounting shaft 5343. The main body 5341 is located on the side of the first sliding member 533 away from the fixed plate 532. The third inclined surface 5342 is disposed opposite to the second inclined surface 5333. When the second sliding member 534 moves in a direction perpendicular to the surface of the fixed plate 532, the third inclined surface 5342 slides on the second inclined surface 5333 and pushes the first sliding member 533 towards the elastic member 535. Preferably, the second inclined surface 5333 and the third inclined surface 5342 are parallel and fit together to increase the force pushing the first sliding member 533. The handle mounting shaft 5243 protrudes from the outer side of the cover 531 on opposite sides in a direction parallel to the surface of the fixed plate 532. The handle 536 is hinged to the handle mounting shaft 5243.

[0042] Please see Figure 15The fixing plate 532 has an elastic element mounting surface 5321 on its side facing the cover 531. The elastic element mounting surface 5321 is perpendicular to the surface of the fixing plate 532 and faces the abutment surface 5334 of the first sliding member 533. The elastic member 535 is fixed to the elastic element mounting surface 5321 and located between the elastic element mounting surface 5321 and the abutment surface 5334. When the first sliding member 533 slides towards the elastic element mounting surface 5321, the elastic member 535 is compressed. Preferably, the elastic element mounting surface 5321 has a protrusion (not labeled) projecting along its normal direction for positioning the elastic member 535. Further, the first sliding member 533 has a first guide member 5336, and the fixing plate 532 has a second guide member 5322 on its side facing the cover 531 that cooperates with the first guide member 5336. The first guide member 5336 and the second guide member 5322 engage with each other to ensure that the first sliding member 533 moves along a direction parallel to the elastic force direction of the elastic member 535. In this embodiment, the first guide member 5336 is a groove formed on the sliding surface 5331, and its extension direction is parallel to the elastic force direction of the elastic member 535; the second guide member 5322 is a protrusion protruding from the surface of the fixing plate 532 along a direction perpendicular to the surface of the fixing plate 532, and the first guide member 5336 is sleeved on the second guide member 5322. When the first sliding member 533 slides, the first guide member 5336 slides relative to the second guide member 5322 along the elastic force direction. The first guide member 5336 and the second guide member 5322 cooperate with each other to prevent the first sliding member 533 from sliding away from the elastic force direction of the elastic member 535. Furthermore, the first guide member 5336 can be configured as a protrusion extending perpendicular to the surface of the fixed plate 532, and the second guide member 5322 can be configured as a groove, which can also serve a guiding function. Further, the second sliding member 534 is provided with a third guide member 5344, and the side of the fixed plate 532 facing the cover 531 is provided with a fourth guide member 5323 that cooperates with the third guide member 5344. The third guide member 5344 engages with the third guide member 5344 to ensure that the second sliding member 534 moves perpendicular to the surface of the fixed plate 532. In this embodiment, the third guide member 5344 is a groove, and the fourth guide member 5323 is a protrusion extending perpendicular to the surface of the fixed plate 532. The third guide member 5344 is sleeved outside the fourth guide member 5323 to ensure that the third guide member 5344 slides relative to the fourth guide member 5323 in a direction perpendicular to the surface of the fixed plate 532.

[0043] In this embodiment, there are two first sliding members 533, arranged back-to-back with each other. There are two or more third inclined surfaces 5342 on the second sliding member 534. Projected along a direction parallel to both the sliding surface 5331 and the abutment surface 5334, the third inclined surfaces 5342 are symmetrically arranged with a straight line perpendicular to the surface of the fixing plate 532. The second sliding member 534 spans between the two first sliding members 533, and the two symmetrically arranged third inclined surfaces 5342 are respectively opposite to the second inclined surfaces 5333 of the two first sliding members 533. When the second sliding member 534 is pulled away from the fixing plate 532, the two back-to-back first sliding members 533 move closer to each other. One second sliding member 534 simultaneously drives two back-to-back first sliding members 533 to slide, improving the filter element locking force while simplifying the assembly and disassembly operation.

[0044] Please see Figure 16 Projected along a direction perpendicular to the surface of the fixing plate 532, the cover 531 and the fixing plate 532 are circular, with their maximum outer diameter smaller than the diameter of the insertion port 31 of the front panel 30. The side wall of the cover 531 has two openings: a first opening 5311 and a second opening 5312, located on opposite sides of the cover 531. The handle mounting shaft 5343 extends from the first opening 5311 to the outside of the cover 531. When the elastic member 535 is not compressed, the first inclined surface 5332 extends from the second opening 5312 to the outside of the cover 531. Furthermore, the inner side of the cover 531 has a buckle 5313 that extends towards the fixing plate 532 and is hook-shaped. The fixing plate 532 has an inverted mounting hole 5324. The inverted buckle 5313 is inserted into the inverted mounting hole 5324 and its end engages with the fixing plate 532, thereby realizing the fixed connection between the box cover 531 and the fixing plate 532.

[0045] Please see Figure 17 and Figure 18 Based on the above structure, this embodiment will describe the process of installing and removing the filter element 50 on the front panel 30.

[0046] First, the fixing plate 532, with its side facing away from the cover 531, faces and closes the opening 521 of the filter element housing 52, and the sealing plug 55 is inserted into the opening 521. The fixing plate 532 and the sealing plug 55 are then fixed together. Projected along a direction perpendicular to the surface of the fixing plate 532, the first inclined surface 5332 extends outward from the outside of the cover 531 and the outside of the filter element housing 52 through the second opening 5312.

[0047] Then, the first inclined surface 5332 faces the insertion port 31 and pushes the filter element 50 toward the front panel 30, with the first inclined surface 5332 abutting against the edge of the insertion port 31.

[0048] Next, the first inclined surface 5332 is pressed against the insertion port 31 radially perpendicular to it. The edge of the insertion port 31 exerts a force on the first inclined surface 5332 parallel to the sliding surface 5331 and pointing towards the elastic member 535, thereby causing the first sliding member 533 to move towards the elastic member 535 and compress the elastic member 535, and the first sliding member 533 retracts into the cover 531. Since the maximum outer diameter of the cover 531 and the fixing plate 532, and the cross-sectional diameter of the filter cartridge housing 52 are smaller than the aperture of the insertion port 31 of the front panel 30, the filter element 50 passes through the insertion port 31.

[0049] Next, after the first sliding member 533 passes through the insertion port 31, since the insertion port 31 no longer presses against the first inclined surface 5332, the elastic member 535 restores its deformation and pushes the first sliding member 533 to move away from the elastic member 535. At this time, the first sliding member 533 extends out of the outer side of the cover 531 again and abuts against the front panel 30 along the side away from the first inclined surface 5532 in a direction perpendicular to the surface of the fixing plate 532, thereby preventing the filter element 50 from falling off the front panel 30.

[0050] Please see Figure 18 During disassembly, the handle 536 is pulled radially away from the fixing plate 532 along the insertion port 31, that is, pulled away from the front panel 30. The third inclined surface 5342 slides along the second inclined surface 5333 away from the fixing plate 532, and exerts a force on the second inclined surface 5333 towards the elastic member 535, causing the first sliding member 533 to move towards the elastic member 535. The first sliding member 533 retracts into the cover 531 and no longer presses against the surface of the front panel 30. The filter element 50 then detaches from the front panel 30 through the insertion port 31, thus achieving disassembly.

[0051] Compared with existing technologies, the water purifier filter element of this invention is easy to install and remove, has stable locking on the outer casing assembly, and features an automatic locking function. Furthermore, its structure is simple and easy to implement. In addition, the filter element has good sealing performance.

[0052] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A water purifier, comprising a housing assembly, a water circuit unit, and a filter element; the water circuit unit is in communication with the filter element, and its inlet and outlet are connected to the outside of the housing assembly; characterized in that: The outer casing assembly has an insertion port; the filter element includes a locking assembly located at one end; the locking assembly includes a fixing plate, a cover, a first sliding member, a second sliding member, and an elastic member, the cover is closed onto the fixing plate to form a receiving space for accommodating the first sliding member, the second sliding member, and the elastic member, and the axis of the filter element is perpendicular to the surface of the fixing plate; The first sliding member slides radially along the insertion port to extend and retract inside and outside the receiving space; after the filter element is inserted into the housing assembly through the insertion port, the first sliding member is located outside the receiving space and abuts against the inner side of the housing assembly when no external force is applied; the elastic member abuts against one side of the first sliding member; when the first sliding member slides towards the inside of the receiving space, the elastic member generates a spring force opposite to the sliding direction of the first sliding member; The first sliding member has a sliding surface, a first inclined surface, a second inclined surface, and a contact surface; the sliding surface is parallel to the surface of the fixed plate and extends outward from the fixed plate; the first inclined surface is obliquely connected to one end of the sliding surface near the outer side of the receiving space; the contact surface is connected to the other side of the sliding surface opposite to the first inclined surface and is perpendicular to the sliding surface; there are two elastic members that abut against the contact surface, generating an elastic force from the contact surface to the first inclined surface; the second inclined surface is located between the first inclined surface and the contact surface, and there are two second inclined surfaces. Projected along the surface perpendicular to the fixed plate, the sliding surface is located between the two second inclined surfaces, and the two elastic members are respectively opposite to the two second inclined surfaces; The second sliding member is provided with a third inclined surface, and the third inclined surface abuts against each of the second inclined surfaces respectively; The second slider engages with the first slider. When the second slider moves axially away from the first slider along the insertion port, the third inclined surface pushes the second inclined surface, causing the second slider to slide on the first slider and push the first slider towards the inside of the receiving space.

2. The water purifier according to claim 1, characterized in that: The locking assembly further includes a handle; the handle is hinged to the second sliding member, and the axial direction of the hinge axis is parallel to both the sliding direction of the first sliding member and the surface of the fixed plate.

3. The water purifier according to claim 1, characterized in that: The housing assembly includes a front panel and a housing; the front panel covers one side of the housing; the insertion port is opened on the front panel; the water channel unit is fixed inside the housing.

4. The water purifier according to claim 3, characterized in that: It also includes a filter element support; the filter element support is fixed inside the housing and sleeved on the outside of the filter element.

5. The water purifier according to claim 3, characterized in that: The filter element is provided with a limiting post and a limiting hole on the side facing away from the insertion port and on the side of the housing assembly opposite to the front panel, respectively; after the filter element is inserted into the housing, the limiting post is inserted into the limiting hole.

6. The water purifier according to claim 1, characterized in that: The filter element also includes a filter element housing and a sealing plug; one end of the filter element housing is provided with an opening; the sealing plug is disposed on the side of the fixing plate opposite to the first sliding member and blocks the opening; the locking assembly is fixed on the sealing plug, and the first sliding member is located outside the side wall of the filter element housing when no external force is applied.

7. The water purifier according to claim 1, characterized in that: The elastic element is a spring.

8. The water purifier according to claim 1, characterized in that: The number of the first sliders is two, and they are arranged radially opposite to each other along the insertion port.

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