Water tank assembly and household appliance

Abstract

The water tank assembly comprises a water tank, a filtering assembly and a moving part, the water tank is provided with a water adding hole and a water draining hole, the filtering assembly is arranged in the water tank, and the moving part is arranged on the filtering assembly. The filtering assembly is used for filtering water added into the water tank from the water adding hole and discharging the filtered water out of the water tank from the water discharging hole, and the moving part is connected with the filtering assembly; and the moving part moves the filtering assembly up and down in the water tank along with the change of the water level in the water tank, so that the filtering assembly is always higher than the water surface in the water tank. The water tank assembly is high in filtering efficiency, good in filtering effect and not prone to secondary pollution.

Description

Technical Field

[0001] The utility model relates to a water tank assembly and a household appliance having the water tank assembly. Background Art

[0002] The water tank of a household appliance such as a humidifier is usually provided with a filtering structure to filter impurities in the water, reduce the adverse effects of impurities in the water on the water path and the water mist path, such as blockage, and avoid problems such as bacterial growth.

[0003] In related art, the filter structure is typically fixed at the water outlet at the bottom of the water tank or inside the water tank. Since the filter structure is fixed at the bottom of the water tank or inside the water tank, the filter structure is constantly immersed in water, and impurities in the filter structure can easily lead to secondary contamination of the water. In addition, in related art, the filter structure is fixed at the bottom of the water tank or inside the water tank, which is difficult to install and remove, inconvenient to replace, and the water in the water tank must be drained during replacement, resulting in water waste. Utility Model Content

[0004] The present invention aims to solve one of the technical problems in the related art to at least a certain extent. To this end, an embodiment of the present invention provides a water tank assembly that can reduce secondary pollution.

[0005] The embodiment of the present utility model further provides a household appliance having the water tank assembly of the above embodiment.

[0006] The water tank assembly of the embodiment of the present utility model includes a water tank, a filter assembly and a movable part. The water tank has a water filling hole and a drainage hole. The filter assembly is arranged in the water tank and is used to filter the water added into the water tank through the water filling hole, and the filtered water is discharged from the water tank through the drainage hole. The movable part is connected to the filter assembly. The movable part moves the filter assembly up and down as the water level in the water tank changes, so that the filter assembly is always higher than the water surface in the water tank.

[0007] The water tank assembly of the embodiment of the utility model has a moving part that moves the filter assembly up and down as the water level in the water tank changes, so that the filter assembly is always above the water surface and does not come into contact with the filtered water, thereby avoiding secondary contamination of the filtered water by impurities filtered in the filter assembly, thereby improving the filtering effect. Moreover, the filter assembly is easy to install and replace. When installing and replacing the filter assembly, there is no need to empty the water in the water tank, thereby avoiding water waste.

[0008] Optionally, the movable component is a floating component that is arranged in the water tank and moves up and down as the water level in the water tank changes by relying on buoyancy, and the filter assembly is arranged on the floating component.

[0009] The water tank assembly of the embodiment of the utility model has a floating component that can float on the water surface, and the filter component is arranged above the floating component, so that the filter component is located above the water surface without contacting the filtered water. The method of realizing the filter component moving up and down with the floating component is simple and low-cost.

[0010] Optionally, the floating component is a floating component floating on the water surface in the water tank, or a suspended component immersed in the water in the water tank.

[0011] In the water tank assembly of the embodiment of the present invention, the floating component can be a floating component or a suspended component, so the manufacturing of the floating component is simple and the precision requirement is low. It only needs to ensure that the floating component can keep the filter assembly above the water surface through its own buoyancy.

[0012] Optionally, the water tank assembly further includes a guide member, which is disposed in the water tank and extends in the up and down directions. The floating component and the filter assembly slide in cooperation with the guide member. The floating component moves up and down along the guide member as the water level in the water tank changes. The floating component has a limiting portion, and the guide member is provided with a gear, which is used to stop the limiting portion to limit the extreme positions of the floating component and the filter assembly.

[0013] The water tank assembly of the embodiment of the utility model, as the water level in the water tank rises, the floating component moves upward along the guide member, so that the floating component and the filter assembly move more smoothly and steadily, and the gear can stop the limit part, thereby limiting the extreme position of the movement of the floating component and the filter assembly, avoiding the filter assembly and the floating accessory from colliding with the water tank, reducing noise and damage to components, and extending service life.

[0014] Optionally, the outer peripheral contour of the filter assembly is adapted to the outer peripheral contour of the inner cavity of the water tank, so that the outer peripheral wall of the filter assembly is slidably fitted with the inner peripheral wall of the water tank.

[0015] The water tank assembly of the embodiment of the utility model increases the filtering area of ​​the filter assembly for water, realizes large-area filtration, improves the filtering efficiency, and avoids water passing between the filter assembly and the inner wall of the water tank, thereby improving the filtering effect.

[0016] Optionally, the water tank includes a tank body and a tank cover, the tank cover is covered on the upper end of the tank body to seal the upper opening of the tank body, the water filling hole is provided on the tank cover, the drainage hole is provided on the bottom wall of the tank body, and the tank cover is in a centrally concave shape.

[0017] The water tank assembly of the embodiment of the utility model has a concave center of the tank cover. When water is added to the tank, the water gathers toward the concave center of the tank cover and flows into the tank through the water filling hole, making the water flow smoother and more reliable, and preventing water overflow.

[0018] 18. The filter assembly of claim 17, wherein the filter assembly comprises a filter housing and a filter element, the filter housing comprising an upper cover with a water inlet and a lower cover with a water outlet, the filter element comprising a filter screen and filter particles, the upper cover and the lower cover being snapped together to enclose a filter cavity, the filter screen and the filter particles being arranged in the filter cavity, the water inlet being a plurality of groups of arc holes, the plurality of groups of water inlet holes being arranged at intervals along the circumference of the upper cover, the plurality of water inlet holes in the same group being arranged at intervals along the radial direction of the upper cover, and the arc lengths of the plurality of water inlet holes gradually decreasing from the outside to the inside, the water outlet being a plurality of groups of arc holes, the plurality of groups of water outlet holes being arranged at intervals along the circumference of the upper cover, the plurality of water outlet holes in the same group being arranged at intervals along the radial direction of the upper cover, and the arc lengths of the plurality of water outlet holes gradually decreasing from the outside to the inside.

[0019] The water tank assembly of the embodiment of the utility model has a spherical concave portion of the tank cover that cooperates with the inner cavity with a circular cross-section, further ensuring that water accumulated in the concave position is not easy to overflow and bypass the filter assembly. The filter core is arranged in a filter cavity surrounded by the upper cover and the lower cover, making the filter core easy to install and replace. Moreover, the filter assembly has a simple structure and low cost. The arrangement of multiple groups of water inlet holes and multiple groups of water outlet holes improves the fluidity of water in the filter assembly, further improving the filtration efficiency.

[0020] Optionally, the upper cover includes an upper cover plate, a first inner flange and a first outer flange, the upper cover plate has a first through-hole, the first inner flange extends downward from the edge of the first through-hole and the first through-hole passes through the upper cover plate and the first inner flange, the first outer flange extends downward from the outer peripheral edge of the upper cover plate, the outer edge of the lower surface of the first outer flange is provided with an elastic tongue extending downward, the elastic tongue is provided with a slot, the outer edge of the lower surface of the first inner flange is provided with an inner lower extension portion extending downward, the inner edge of the lower surface of the first outer flange is provided with an outer lower extension portion extending downward, the lower cover includes a lower cover plate, a second inner flange and a second outer flange, the lower cover plate has a second through-hole The second flange has a groove which passes through the outer peripheral edge of the lower cover plate and the second inner flange, and the second outer flange extends upward from the outer peripheral edge of the lower cover plate. The inner edge of the upper surface of the second inner flange is provided with an inner upper extension portion which extends upward, and the inner upper extension portion is fitted in the inner lower extension portion and stops at the lower surface of the first inner flange. The outer edge of the upper surface of the second outer flange is provided with an outer upper extension portion which extends upward, and the outer lower extension portion is fitted in the outer upper extension portion and stops at the upper surface of the second outer flange. The outer peripheral surface of the second outer flange is provided with a groove which passes through the outer upper extension portion, and the groove is provided with a clamping protrusion which cooperates with the clamping slot.

[0021] In the water tank assembly of the embodiment of the present invention, the upper cover and the lower cover are connected by snap-fitting, and the fitting method is simple and convenient for assembly and disassembly. In addition, the inner lower extension on the upper cover and the inner upper extension on the lower cover fit together, and the outer lower extension on the upper cover and the outer upper extension on the lower cover fit together, which further improves the fitting reliability between the upper cover and the lower cover.

[0022] Optionally, the upper cover further includes an extension portion, which extends outward around the outer periphery of the upper cover plate and tilts upward, and the outer periphery of the extension portion is adapted to the outer periphery of the inner cavity of the water tank.

[0023] When water is added to the water tank assembly of the present invention, the water gathers along the extension portion toward the upper cover plate and flows into the water tank through the water inlet hole, making it difficult for water to bypass the extension portion and flow into the water tank, thereby ensuring the filtering effect.

[0024] The household appliance of the embodiment of the present invention includes the water tank assembly described in any one of the above embodiments.

[0025] The household appliance of the embodiment of the utility model has a good filtering effect and high filtering efficiency of the water tank assembly, which improves the efficiency and effect of the household appliance in filtering water, reduces the blockage of the water channel and the water mist channel, and ensures that the filtered water is not easily contaminated by secondary pollution.

[0026] Optionally, the household appliance is a humidifier, and the water tank assembly further includes a mist outlet duct and a mist outlet cap, the mist outlet cap is provided with a mist outlet hole, and the box cover is provided with a connecting hole, the mist outlet duct is provided in the water tank, the mist outlet cap is installed on the box cover, the lower end of the mist outlet cap is engaged in the connecting hole, the upper end of the mist outlet duct is connected to the lower end of the mist outlet cap through a seal, and the filter assembly is slidably engaged with the outer peripheral surface of the mist outlet duct.

[0027] In the household appliance of the embodiment of the utility model, the filter assembly and the mist outlet duct are slidably matched, so that when the filter assembly is driven up and down by the moving component as the water level changes, it is not easy to deflect, the movement is smooth and stable, and the filtering effect is improved. The setting of the sealing member makes it difficult for unfiltered water on the box cover to enter the mist outlet duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an exploded schematic diagram of the water tank assembly of an embodiment of the present utility model.

[0029] Figure 2 It is a schematic diagram of the moving parts of the water tank assembly and the water tank according to an embodiment of the present utility model.

[0030] Figure 3 It is a cross-sectional view of a water tank assembly according to an embodiment of the present utility model.

[0031] Figure 4 yes Figure 3 Enlarged schematic diagram of part A.

[0032] Figure 5 It is a cross-sectional view of a water tank assembly according to an embodiment of the present utility model.

[0033] Figure 6 It is a cross-sectional view of the filter assembly of the water tank assembly according to an embodiment of the present utility model.

[0034] Figure 7 It is a schematic diagram of the upper cover of the water tank assembly according to an embodiment of the present utility model.

[0035] Figure 8 It is a schematic diagram of the lower cover of the water tank assembly according to an embodiment of the present utility model.

[0036] Figure 9 yes Figure 6 Schematic diagram of the enlarged portion B.

[0037] Figure 10 Schematic diagram of a household appliance according to an embodiment of the present invention.

[0038] Reference numerals: 100, water tank assembly; 200, household appliance; 1, water tank; 11, tank body; 12, tank cover; 121, water filling hole; 122, connecting hole; 2, filter assembly; 21, filter housing; 211, upper cover; 2111, upper cover plate; 21111, first perforation; 2112, first inner flange; 21121, inner lower extension; 2113, first outer flange; 21131, elastic tongue; 21132, slot; 21133, outer lower extension; 2114, extension; 2115, water inlet; 212, lower cover; 2121, lower cover plate; 21211 , second perforation; 2122, second inner flange; 21221, inner upper extension; 2123, second outer flange; 21231, outer upper extension; 21232, groove; 21233, cam; 2124, water outlet; 213, filter cavity; 22, filter core; 221, filter screen; 222, filter particles; 3, moving part; 31, upper float; 32, lower float; 33, through hole; 34, limiting part; 341, protrusion; 4, mist outlet duct (guide); 41, limiting groove; 411, gear; 5, mist outlet cap; 51, mist outlet; 6, sealing part; 7, base. DETAILED DESCRIPTION

[0039] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0040] like Figure 1-10As shown, the embodiment of the present invention provides a water tank assembly and a household appliance having the water tank assembly. It is understandable that the water tank assembly of this embodiment is not limited to being used in household appliances, but can also be used in other devices and occasions having similar water tank assemblies.

[0041] The water tank assembly of the embodiment of the utility model is first described below.

[0042] like Figure 1-5 As shown, the water tank assembly 100 of the present invention comprises a water tank 1, a filter assembly 2, and a movable component 3. The water tank 1 has a water inlet 121 and a drain hole (not labeled). The filter assembly 2 is disposed within the water tank 1 and is used to filter water added to the water tank 1 through the water inlet 121. The filtered water is then discharged from the water tank 1 through the drain hole. The movable component 3 is connected to the filter assembly 2 and moves the filter assembly 2 up and down within the water tank 1 as the water level within the water tank 1 changes. This ensures that the filter assembly 2 remains above the water surface within the water tank 1 and does not come into contact with the filtered water.

[0043] It is understandable that the movable component 3 is connected to the filter assembly 2 , and the two may be directly connected or indirectly connected through a medium, or the filter assembly 2 may be directly or indirectly placed on the movable component 3 .

[0044] The water tank assembly of the embodiment of the present invention, the moving part 3 drives the filter assembly 2 to move up and down as the water level in the water tank 1 changes, so that the filter assembly 2 is always higher than the water surface, so that the filter assembly 2 does not contact the filtered water, thereby avoiding the secondary contamination of the filtered water by impurities filtered in the filter assembly 2, ensuring the filtering effect, and also facilitating the installation and replacement of the filter assembly 2, saving time and effort and reducing costs. In addition, there is no need to empty the water in the water tank when replacing the filter assembly 2, avoiding water waste.

[0045] like Figure 3 and Figure 5 As shown, the moving component 3 can be a floating component provided in the water tank 1 and moving up and down by buoyancy as the water level in the water tank 1 changes. In other words, the moving component 3 moves up and down by the buoyancy generated by itself as the water level in the water tank 1 changes, thereby driving the filter assembly 2 to move up and down.

[0046] For example, the floating component may be a floating component that always floats on the water surface in the water tank 1 , or a suspended component that is immersed in the water in the water tank 1 .

[0047] The filter assembly 2 is positioned above the water surface by a floating component. The structure is simple and the floating component requires low manufacturing precision. It is sufficient as long as the filter assembly can be positioned above the water surface by buoyancy.

[0048] It is understood that the floating component can be a floating component, which means that the floating component floats on the water surface due to its own buoyancy. Of course, a portion of the floating component, preferably a small portion, is submerged in the water so that the filter assembly 2 is located above the water surface and is not easily contacted with the water surface. Specifically, the floating component can be made of a floating material, such as a plastic material or a foam material.

[0049] The floating component can be a suspended component, which means that most of the floating component is immersed in water and suspended in water by its own buoyancy. Of course, the floating component can be completely immersed in water. At this time, the filter component 2 can be arranged on the suspended component through a connecting part (such as a connecting rod or a connecting frame), so that the filter component 2 is higher than the water surface under the support of the suspended component and does not come into contact with the water, thereby reducing the secondary pollution of the filtered water by the filter component 2.

[0050] It should be pointed out that, in the present invention, "water surface" should be understood in a broad sense. When the filter assembly 2 filters other liquids instead of water, the water surface refers to the liquid level of the other liquids.

[0051] like Figure 2 、 Figure 3 and Figure 5 As shown, the water tank assembly 100 also includes a guide member 4, which is arranged in the water tank 1 and extends in the up and down directions. The floating component and the filter assembly 2 slide with the guide member 4, and the floating component moves up and down along the guide member 4 as the water level in the water tank 1 changes. The guide member 4 is provided with a gear 411, and the floating component has a limit portion 34. The gear 411 is used to stop the limit portion 34 to limit the extreme position of the movement of the floating component and the filter assembly 2.

[0052] Specifically, the guide member 4 is provided with a vertically extending stopper groove 41. The stopper groove 41 is recessed from the outer circumference of the guide member toward its center. The upper and / or lower steps of the stopper groove 41 constitute a stopper 411. The stopper 411 may be provided at either the upper or lower end of the stopper groove 41. Preferably, the stopper 411 is provided at both the upper and lower ends of the stopper groove 41. As the water level in the water tank 1 rises and falls, the stopper 34 moves up and down along the stopper groove 41. When the stopper 411 at the upper end of the stopper groove 41 stops the stopper 34, the floating member and the filter assembly 2 are prevented from further upward movement, thereby preventing the filter assembly 2 from colliding with the top of the water tank 1, reducing noise and preventing damage to the filter assembly. Similarly, when the stopper 411 at the lower end of the stopper groove 41 stops the stopper 34, the floating member and the filter assembly 2 are prevented from further downward movement, thereby preventing the filter assembly 2 from colliding with the bottom of the water tank 1, reducing noise and preventing damage to the filter assembly. The floating component and the filter assembly 2 are guided by the guide member 4, so that the floating component and the filter assembly 2 can move up and down more smoothly and stably.

[0053] In some embodiments, as Figure 2 As shown, the floating component includes an upper float 31 and a lower float 32. The upper float 31 is disposed on the top surface of the lower float 32, and the filter assembly 2 is disposed on the top surface of the upper float 31. The filter assembly 2 can be connected to the upper float 31 or simply placed on the upper float 31. The upper float 31 and the lower float 32 are both hollow, thereby reducing the weight of the floating component and increasing buoyancy. The cross-sectional area of ​​the outer contour of the upper float 31 is smaller than the cross-sectional area of ​​the outer contour of the lower float 32, and the cross-sectional area of ​​the outer contour of the lower float 32 is smaller than the cross-sectional area of ​​the outer contour of the filter assembly 2, thereby facilitating the flow of water passing through the filter assembly 2 into the water tank 1.

[0054] like Figure 2 and Figure 4 As shown, the floating component has a through hole 33 that extends from the top surface of the upper float 31 to the bottom surface of the lower float 32. The guide member 4 is disposed within the through hole 33. The floating component and the filter assembly 2 slideably engage with the guide member 4. A stopper 34 is located on the inner wall surface at the lower end of the through hole 33 and extends downward. The lower end of the stopper 34 has a protrusion 341 that protrudes toward the central axis of the through hole 33. The protrusion 341 engages with the limiting groove 41. When the protrusion 341 contacts the stopper 411, the protrusion 341 is stopped.

[0055] In some specific examples, the upper float 31 and the lower float 32 are both disc-shaped, more specifically, circular disc-shaped, to increase the contact area with the filter assembly 2 and ensure that the filter assembly 2 is firmly fixed on the floating component. It is understood that the shapes of the upper float 31 and the lower float 32 are not limited to this.

[0056] In some embodiments, there are at least two limit grooves 41, and at least two limit grooves 41 are arranged at circumferential intervals around the guide member. There are at least two limit parts 34, and at least two limit parts 34 correspond one-to-one to at least two limit grooves 41, ensuring that the floating component is not easy to rotate when rising or falling, and the up and down movement is smoother, more stable and reliable.

[0057] like Figure 3 and Figure 5 As shown, the outer contour of the filter assembly 2 is adapted to the outer contour of the inner cavity of the water tank 1, so that the outer peripheral wall of the filter assembly 2 and the inner peripheral wall of the water tank 1 slide together, increasing the filtering area of ​​the filter assembly 2 for water and preventing water from flowing down through the gap between the filter assembly 2 and the inner wall of the water tank 1, thereby improving the filtering efficiency.

[0058] like Figure 3 and Figure 5 As shown, the water tank 1 includes a box body 11 and a box cover 12. The box cover 12 covers the upper end of the box body 11 to seal the upper opening of the box body 11. The water filling hole 121 is provided on the box cover 12, and the drainage hole is provided on the bottom wall of the box body 11. The box cover 12 is in a concave shape in the center.

[0059] Specifically, there may be multiple water addition holes 121, which are spaced apart along the circumference of the box cover 12. The box cover 12 is provided at the top of the box body 11. When water is added to the box body 11, the water gathers toward the concave position in the center of the box cover 12 and flows into the box body 11 through the water addition holes 121, making it difficult for the water to overflow.

[0060] like Figure 3 and Figure 5 As shown, the inner cavity of the water tank 1 has a circular cross-section, the outer peripheral contour of the filter assembly 2 is also circular to match the outer peripheral contour of the inner cavity, and the box cover 12 is a concave spherical segment, which ensures that the water accumulated in the concave position is not easy to overflow.

[0061] like Figure 1 、 Figure 7 and Figure 8 As shown, the filter assembly 2 includes a filter housing 21 and a filter core 22. The filter housing 21 includes an upper cover 211 having a water inlet 2115 and a lower cover 212 having a water outlet 2124. Specifically, the upper cover 211 and the lower cover 212 are both disc-shaped, which can increase the area of ​​the upper cover 211 and the lower cover 212, thereby achieving large-area filtration of the filter assembly 2 and improving filtration efficiency.

[0062] The filter core 22 includes a filter screen 221 and filter particles 222. The upper cover 211 and the lower cover 212 are buckled together to enclose a filter cavity 213. The filter screen 221 and the filter particles 222 are arranged in the filter cavity 213 to facilitate the installation and replacement of the filter core 22.

[0063] Specifically, the filter mesh 221 is laid on the water inlet side of the filter particles 222. The water is first filtered through the filter mesh 221, and then other impurities in the water are adsorbed and filtered through the filter particles 222, thereby improving the filtering effect.

[0064] Specifically, the filter particles 222 can be quartz sand, gravel, anthracite, manganese sand, magnetite filter material, fruit shell filter material, porcelain sand filter material, ceramsite, medical stone filter material, etc. Preferably, the filter particles 222 are medical stone filter material.

[0065] like Figure 7 and Figure 8 As shown, the water inlet holes 2115 are multiple groups of arc-shaped holes, and the multiple groups of water inlet holes 2115 are arranged at intervals along the circumference of the upper cover 211. The multiple water inlet holes 2115 in the same group are arranged at intervals along the radial direction of the upper cover 211, and the arc lengths of the multiple water inlet holes 2115 gradually decrease from the outside to the inside. The water outlet holes 2124 are multiple groups of arc-shaped holes, and the multiple groups of water outlet holes 2124 are arranged at intervals along the circumference of the upper cover 211. The multiple water outlet holes 2124 in the same group are arranged at intervals along the radial direction of the upper cover 211, and the arc lengths of the multiple water outlet holes 2124 gradually decrease from the outside to the inside.

[0066] Specifically, multiple groups of water inlet holes 2115 correspond one-to-one with multiple groups of water outlet holes 2124, and multiple water inlet holes 2115 in the same group correspond one-to-one with multiple water outlet holes 2124 in the same group, which speeds up the flow of water in the filter assembly 2 and thereby improves the filtration efficiency of the filter assembly 2.

[0067] Preferably, the water inlet holes 2115 and the water outlet holes 2124 are staggered in the direction of water flow, thereby increasing the path of water in the filter assembly 2 and further improving the filtering effect.

[0068] In some specific examples, such as Figure 7 As shown, the upper cover 211 includes an upper cover plate 2111, a first inner flange 2112 and a first outer flange 2113, the upper cover plate 2111 has a first through-hole 21111, the first inner flange 2112 extends downward from the edge of the first through-hole 21111 and the first through-hole 21111 passes through the upper cover plate 2111 and the first inner flange 2112, the first outer flange 2113 extends downward from the outer periphery of the upper cover plate 2111, the outer edge of the lower surface of the first outer flange 2113 is provided with a downward extending elastic tongue 21131, the elastic tongue 21131 is provided with a slot 21132, the outer edge of the lower surface of the first inner flange 2112 is provided with a downward extending inner lower extension 21121, and the inner edge of the lower surface of the first outer flange 2113 is provided with a downward extending outer lower extension 21133.

[0069] The first through-hole 21111 is located roughly in the center of the upper cover plate 2111, with its central axis collinear with the central axis of the upper cover plate 2111. Multiple sets of water inlet holes 2115 are provided on the upper cover plate 2111 and spaced apart along the circumference of the upper cover plate 2111. The cross-sectional area of ​​the inner lower extension 21121 is larger than that of the first inner flange 2112, while the cross-sectional area of ​​the outer lower extension 21133 is smaller than that of the first outer flange 2113. Multiple elastic latches 21131 are spaced apart along the circumference of the first outer flange 2113.

[0070] The upper cover 211 also includes an extension portion 2114, which extends outward around the outer periphery of the upper cover plate 2111 and tilts upward. The outer peripheral contour of the extension portion 2114 is adapted to the outer peripheral contour of the inner cavity of the water tank 1. When water is added to the water tank 1, the water flows along the extension portion 2114 to the center of the upper cover plate 2111 and flows into the water tank 1 through the water inlet hole 2115, making it difficult for water to overflow.

[0071] Specifically, if Figure 8As shown, the lower cover 212 includes a lower cover plate 2121, a second inner flange 2122 and a second outer flange 2123. The lower cover plate 2121 has a second through-hole 21211. The second inner flange 2122 extends upward from the edge of the second through-hole 21211 and the second through-hole 21211 passes through the lower cover plate 2121 and the second inner flange 2122. The second outer flange 2123 extends upward from the outer periphery of the lower cover plate 2121. The inner edge of the upper surface of the second inner flange 2122 is provided with an inner upper extension portion 21221 extending upward. The extension portion 21221 fits within the inner lower extension portion 21121 and stops against the lower surface of the first inner flange 2112. The outer edge of the upper surface of the second outer flange 2123 is provided with an outer upper extension portion 21231 extending upward. The outer lower extension portion 21133 fits within the outer upper extension portion 21231 and stops against the upper surface of the second outer flange 2123. A groove 21232 passing through the outer upper extension portion 21231 is provided on the outer peripheral surface of the second outer flange 2123. A latching protrusion 21233 mating with the latching slot 21132 is provided in the groove 21232.

[0072] There may be multiple grooves 21232, which are spaced apart circumferentially around the second outer flange 2123. Each groove 21232 corresponds to each of the multiple elastic latches 21131. When the upper cover 211 and the lower cover 212 are mated, the elastic latches 21131 fit within the grooves 21232, and the latching protrusions 21233 engage with the latching slots 21132, making the mating of the upper cover 211 and the lower cover 212 simple and effective, and facilitating assembly and disassembly.

[0073] The second through hole 21211 is generally located in the middle of the lower cover plate 2121. The central axis of the second through hole 21211, the central axis of the lower cover plate 2121, the central axis of the first through hole 21111 and the central axis of the upper cover plate 2111 are collinear. Multiple groups of water outlet holes 2124 are provided on the lower cover plate 2121 and are spaced apart along the circumference of the lower cover plate 2121. Figure 9 As shown, the cross-sectional area of ​​the second inner flange 2122 can be the same as that of the first inner flange 2112, and the cross-sectional area of ​​the inner upper extension 21221 is smaller than that of the second inner flange 2122. This allows the inner upper extension 21221 to be sleeved and fitted with the inner lower extension 21121, thereby improving the fit between the upper cover 211 and the lower cover 212. The inner upper extension 21221 can abut against the lower surface of the first inner flange 2112, thereby acting as a limiter.

[0074] The cross-sectional area of ​​the second outer flange 2123 is the same as that of the first outer flange 2113. The cross-sectional area of ​​the outer upper extension 21231 is larger than that of the second outer flange 2123. This allows the outer upper extension 21231 to be nested with the outer lower extension 21133, further enhancing the secure fit between the upper cover 211 and the lower cover 212. The outer upper extension 21231 can abut against the upper surface of the second outer flange 2123, thereby acting as a stop.

[0075] The household appliance according to an embodiment of the present invention is described below.

[0076] like Figure 10 As shown, the household appliance 200 of the embodiment of the present invention includes a water tank assembly. The water tank assembly can be the water tank assembly 100 of the above embodiment. In some examples, the household appliance 200 further includes a base 7, and the water tank assembly 100 is provided on the base 7.

[0077] In the household appliance of the embodiment of the present invention, the water tank assembly 100 has high filtering efficiency and ensures that the filtered water is not easily contaminated by secondary pollution, thereby improving the water filtering effect of the household appliance 200. The replacement of the filter assembly 2 is simple and convenient, and the water channel of the household appliance 200 is not easily clogged, thereby increasing the service life of the household appliance 200, reducing the maintenance frequency, saving time, labor and cost.

[0078] In some embodiments, the household appliance 200 can be a humidifier, wherein the water tank assembly 100 further includes a mist outlet conduit and a mist outlet cap 5. The mist outlet cap 5 is provided with a mist outlet hole 51, and the tank cover 12 is provided with a connection hole 122. The mist outlet conduit is provided within the water tank 1, and the mist outlet cap 5 is mounted on the tank cover 12. The lower end of the mist outlet cap 5 fits within the connection hole 122. The upper end of the mist outlet conduit is connected to the lower end of the mist outlet cap 5 via a seal 6. The filter assembly 2 slidably engages with the outer circumference of the mist outlet conduit. In the embodiment where the household appliance 200 is a humidifier, the mist outlet conduit also serves as a guide 4 for guiding the vertical movement of the filter assembly 2 and the floating component provided within the water tank 1.

[0079] Specifically, the connection hole 122 is located at the center of the cover 12, and the central axis of the connection hole 122 is collinear with the central axis of the mist outlet conduit, so that the mist outlet conduit and the mist outlet cap 5 can be matched. A seal 6 is provided between the mist outlet conduit and the mist outlet cap 5, and the seal 6 is arranged around the circumference of the lower end of the mist outlet cap 5 to prevent water from entering the mist outlet conduit.

[0080] like Figure 3 and Figure 5As shown, the filter assembly 2 is sleeved on the mist outlet conduit and slidably cooperates with the mist outlet conduit. The mist outlet conduit also serves as a guide to play a guiding role, so that when the filter assembly 2 moves up and down with the water level, it is not easy for the filter assembly 2 to deflect, and water is not easy to bypass the filter assembly 2 through the gap between the filter assembly 2 and the mist outlet conduit, thereby improving the filtering effect.

[0081] It can be understood that the mist outlet duct serves as a guide member 4, which not only discharges mist but also guides the up and down movement of the filter assembly 2 and the floating component, thereby eliminating the need for an additional guide member in the water tank 1, saving space in the water tank 1 and reducing costs.

[0082] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 to the present invention.

[0083] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0084] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0085] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0086] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean 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 invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0087] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments made by ordinary technicians in this field are all within the scope of protection of the present invention.

Claims

1. A water tank assembly, characterized in that: The invention comprises a water tank (1), a filter assembly (2) and a moving part (3); the water tank (1) has a water inlet (121) and a drain hole; the filter assembly (2) is arranged in the water tank (1) and is used to filter water added into the water tank (1) from the water inlet (121), and the filtered water is discharged from the water tank (1) from the drain hole; the moving part (3) is connected to the filter assembly (2); the moving part (3) moves the filter assembly (2) up and down as the water level in the water tank (1) changes, so that the filter assembly (2) is always higher than the water surface in the water tank (1).

2. The water tank assembly according to claim 1, characterized in that The moving component (3) is a floating component arranged in the water tank (1) and moves up and down depending on buoyancy as the water level in the water tank (1) changes, and the filter assembly (2) is arranged on the floating component.

3. The water tank assembly according to claim 2, characterized in that: The floating component is a floating component that floats on the water surface in the water tank (1), or a suspended component that is immersed in the water in the water tank (1).

4. The water tank assembly according to claim 2, characterized in that: The water tank assembly (100) further comprises a guide member (4), the guide member (4) being arranged in the water tank (1) and extending in the up-down direction, the floating component and the filter assembly (2) being slidably engaged with the guide member (4), the floating component moving up and down along the guide member (4) as the water level in the water tank (1) changes, the floating component having a limiting portion (34), the guide member (4) being provided with a stop (411), the stop (411) being used to stop the limiting portion (34) to define the extreme positions of the floating component and the filter assembly (2).

5. The water tank assembly according to any one of claims 1 to 4, characterized in that: The outer peripheral contour of the filter assembly (2) is adapted to the outer peripheral contour of the inner cavity of the water tank (1), so that the outer peripheral wall of the filter assembly (2) is slidably fitted with the inner peripheral wall of the water tank (1).

6. The water tank assembly according to claim 1, characterized in that The water tank (1) comprises a tank body (11) and a tank cover (12); the tank cover (12) covers the upper end of the tank body (11) to seal the upper opening of the tank body (11); the water filling hole (121) is provided on the tank cover (12); the drainage hole is provided on the bottom wall of the tank body (11); and the tank cover (12) is in a shape with a concave center.

7. The water tank assembly according to claim 6, characterized in that The inner cavity of the water tank (1) has a circular cross-section, the tank cover (12) is in the shape of a concave spherical segment, the filter assembly (2) comprises a filter housing (21) and a filter core (22), the filter housing (21) comprises an upper cover (211) having a water inlet hole (2115) and a lower cover (212) having a water outlet hole (2124), the filter core (22) comprises a filter screen (221) and filter particles (222), the upper cover (211) and the lower cover (212) are engaged with each other to enclose a filter cavity (213), the filter screen (221) and the filter particles (222) are arranged in the filter cavity (213), The water inlet holes (2115) are multiple groups of arc-shaped holes, and the multiple groups of water inlet holes (2115) are arranged at intervals along the circumference of the upper cover (211). The multiple water inlet holes (2115) in the same group are arranged at intervals along the radial direction of the upper cover (211), and the arc lengths of the multiple water inlet holes (2115) gradually decrease from the outside to the inside. The water outlet holes (2124) are multiple groups of arc-shaped holes, and the multiple groups of water outlet holes (2124) are arranged at intervals along the circumference of the upper cover (211). The multiple water outlet holes (2124) in the same group are arranged at intervals along the radial direction of the upper cover (211), and the arc lengths of the multiple water outlet holes (2124) gradually decrease from the outside to the inside.

8. The water tank assembly according to claim 7, characterized in that The upper cover (211) includes an upper cover plate (2111), a first inner flange (2112) and a first outer flange (2113), wherein the upper cover plate (2111) has a first through-hole (21111), the first inner flange (2112) extends downward from the edge of the first through-hole (21111) and the first through-hole (21111) passes through the upper cover plate (2111) and the first inner flange (2112), and the first outer flange (2113) extends from the edge of the first through-hole (21111). The outer periphery of the upper cover plate (2111) extends downward, the outer edge of the lower surface of the first outer flange (2113) is provided with an elastic tongue (21131) extending downward, and the elastic tongue (21131) is provided with a slot (21132), the outer edge of the lower surface of the first inner flange (2112) is provided with an inner lower extension portion (21121) extending downward, and the inner edge of the lower surface of the first outer flange (2113) is provided with an outer lower extension portion (21133) extending downward. The lower cover (212) includes a lower cover plate (2121), a second inner flange (2122) and a second outer flange (2123), wherein the lower cover plate (2121) has a second through-hole (21211), the second inner flange (2122) extends upward from the edge of the second through-hole (21211) and the second through-hole (21211) passes through the lower cover plate (2121) and the second inner flange (2122), the second outer flange (2123) extends upward from the outer periphery of the lower cover plate (2121), the inner edge of the upper surface of the second inner flange (2122) is provided with an inner upper extension portion (21221) extending upward, and the inner flange (2123) extends upward from the outer periphery of the lower cover plate (2121). The upper extension portion (21221) is fitted in the inner lower extension portion (21121) and stops at the lower surface of the first inner flange (2112); the outer edge of the upper surface of the second outer flange (2123) is provided with an outer upper extension portion (21231) extending upward; the outer lower extension portion (21133) is fitted in the outer upper extension portion (21231) and stops at the upper surface of the second outer flange (2123); a groove (21232) passing through the outer upper extension portion (21231) is provided on the outer peripheral surface of the second outer flange (2123); a locking protrusion (21233) matching the locking slot (21132) is provided in the groove (21232).

9. The water tank assembly according to claim 8, characterized in that The upper cover (211) further comprises an extension portion (2114), the extension portion (2114) extending outward around the outer periphery of the upper cover plate (2111) and tilting upward, the outer periphery of the extension portion (2114) being adapted to the outer periphery of the inner cavity of the water tank (1).

10. A household appliance, characterized in that: The invention comprises a water tank assembly (100) according to any one of claims 1 to 9.

11. The household appliance according to claim 10, characterized in that The household appliance (200) is a humidifier. The water tank assembly (100) further comprises a mist outlet conduit and a mist outlet cap (5). The mist outlet cap (5) is provided with a mist outlet hole (51). The tank cover (12) is provided with a connecting hole (122). The mist outlet conduit is provided in the water tank (1). The mist outlet cap (5) is mounted on the tank cover (12). The lower end of the mist outlet cap (5) is fitted in the connecting hole (122). The upper end of the mist outlet conduit is connected to the mist outlet cap (5) via a sealing member (6). The filter assembly (2) is slidably fitted with the outer peripheral surface of the mist outlet conduit.

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