Water tank and water purifier comprising same

Abstract

The utility model provides a water tank and a water purifier comprising the same, the water tank is used for storing water and sterilizing the water, the water tank comprises a shell, at least one sterilizing assembly is arranged on the side face and / or the bottom face of the shell, the sterilizing assembly comprises an ultraviolet lamp, the sterilizing assembly further comprises at least one concave lens, and the concave lens is arranged on the side face and / or the bottom face of the shell. The concave lens is arranged in front of the ultraviolet lamp along the ultraviolet light emitting direction of the ultraviolet lamp; and all ultraviolet light emitted by the ultraviolet lamp passes through the concave lens. According to the water tank and the water purifier comprising the same, ultraviolet light emitted by the ultraviolet lamp can be diffused through the concave lens, and the irradiation area of the ultraviolet light is increased, so that the area which cannot be irradiated by the ultraviolet light in the water tank is reduced, and the sterilization and disinfection effects are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of water purification equipment, and in particular to a water tank and a water purifier including the same. Background Technology

[0002] Current water purifiers often suffer from low flow rates. Therefore, a water tank is typically installed to store water and increase the flow rate. However, bacteria can grow in the water tank due to long-term storage. Therefore, existing technologies usually install ultraviolet (UV) lamps in the tank to sterilize it. For example, patent CN220494819U discloses a water storage container and water dispenser, in which a UV lamp assembly is installed on the bottom wall of the tank to sterilize the water with ultraviolet light.

[0003] However, some areas in the water tank cannot be exposed to ultraviolet light due to angle and distance, forming dead zones that are not sterilized or are not thoroughly sterilized, resulting in unsatisfactory sterilization effects. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of poor sterilization and disinfection effect in the water tank of the existing water purification equipment, and to provide a water tank and a water purifier including the tank.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] A water tank for storing and sterilizing water, the water tank comprising a shell, the shell having at least one sterilization component, the sterilization component comprising an ultraviolet lamp, the sterilization component being disposed on the side and / or bottom surface of the shell, the sterilization component further comprising at least one concave lens, the concave lens being disposed in front of the ultraviolet lamp along the direction in which the ultraviolet light is emitted; and all the ultraviolet light emitted by the ultraviolet lamp passes through the concave lens.

[0007] In this design, the water tank uses a concave lens to diffuse all the ultraviolet light emitted by the ultraviolet lamp, increasing the area that can be irradiated by the ultraviolet light and thus reducing the areas inside the water tank that cannot be irradiated by ultraviolet light, thereby improving the sterilization and disinfection effect. Specifically, the concave lens is positioned in front of the ultraviolet lamp along the direction of ultraviolet light emission; and all ultraviolet light passes through the concave lens, ensuring that the scattering area of ​​the concave lens is greater than the irradiation area of ​​the ultraviolet lamp. Depending on the shape and size of the water tank and the required sterilization effect, one or more sterilization components can also be installed on the side and / or bottom of the shell to further enhance the sterilization and disinfection effect.

[0008] Preferably, the sterilization component is located on the bottom surface of the housing, and the position of the concave lens is neither lower than nor higher than the bottom surface.

[0009] In this design, placing the sterilization component at the bottom of the casing allows the UV lamp to effectively sterilize and disinfect bacteria or harmful substances settled at the bottom, thus improving the sterilization and disinfection effect. Positioning the concave lens no higher than the bottom surface ensures that all water above the bottom is exposed to UV light, further enhancing the sterilization and disinfection effect. Positioning the concave lens no lower than the bottom surface facilitates its installation and makes the outer surface of the water tank smoother, facilitating assembly with other external components.

[0010] Preferably, at least one of the sterilization components is located at the center of the bottom surface.

[0011] In this design, the sterilization component is placed in the center of the bottom surface, so that the water around the sterilization component in the water tank is symmetrical or nearly symmetrical with respect to the sterilization component. This helps to increase the irradiation area of ​​ultraviolet light and ensures uniform irradiation intensity at each location.

[0012] Preferably, the diameter of the concave lens is larger than the diameter corresponding to the maximum tilt angle at which the ultraviolet lamp emits ultraviolet light.

[0013] In this scheme, by setting the diameter of the concave lens to be larger than the diameter corresponding to the maximum tilt angle of the ultraviolet light emitted by the ultraviolet lamp, it is beneficial to further increase the scattering area of ​​the concave lens.

[0014] Preferably, the concave lens is coaxially arranged with the ultraviolet lamp.

[0015] In this design, the concave lens and the ultraviolet lamp are coaxially positioned so that the ultraviolet lamp faces the concave lens directly. This avoids the possibility that ultraviolet light emitted from the edge of the ultraviolet lamp cannot pass through the concave lens, ensuring that all ultraviolet light passes through the concave lens.

[0016] Preferably, the sterilization component is located on the bottom surface of the housing, and the water tank further includes an inlet and an outlet, with the outlet located on the bottom surface and closer to the sterilization component than the side surface of the housing.

[0017] In this design, the water outlet is located on the bottom surface and closer to the sterilization component than the side of the shell. This reduces the possibility that the water flow at the outlet may not be exposed to ultraviolet light, which helps to improve the sterilization and disinfection effect.

[0018] Preferably, the housing is further provided with an indicator device, which includes an indicator and a controller. The controller is electrically connected to the ultraviolet lamp and the indicator. The controller is used to control the ultraviolet lamp to turn on or off, and to control the indicator to issue an indicator signal according to the control of the ultraviolet lamp to turn on or off.

[0019] Alternatively, the water tank may include a controller, and the housing may be equipped with an indicator. The controller is electrically connected to the ultraviolet lamp and the indicator. The controller is used to control the ultraviolet lamp to turn on or off, and to control the indicator to issue an indicator signal according to the control of the ultraviolet lamp to turn on or off.

[0020] In this solution, a controller is used to turn the UV lamp on or off, thereby extending its lifespan and ensuring effective sterilization and disinfection. An indicator sends a signal to the user, allowing them to promptly determine whether the sterilization components are operational and to decide whether to activate the UV lamp or perform other actions. The controller can be a component included within the indicator device or a separate control unit.

[0021] Preferably, the water tank includes a controller, and the housing is further provided with a water level detection device. The water level detection device is used to detect the water level in the housing and generate a water level signal. The controller is used to control the opening or closing of the water inlet according to the water level signal.

[0022] In this solution, the water level is detected by a water level detection device and a water level signal is generated. This allows the controller to control the opening or closing of the water inlet according to the water level, and to adjust the water volume in the water tank. It also helps to adjust the water volume to the range where the ultraviolet lamp can effectively sterilize and disinfect, thereby ensuring the sterilization and disinfection effect.

[0023] Preferably, the sterilization assembly further includes a concave lens carrier for mounting the concave lens, the concave lens carrier being connected to the inner side of the housing; the ultraviolet lamp being connected to the outer side of the housing, and a portion of the ultraviolet lamp extending into the housing and facing the concave lens.

[0024] In this design, the concave lens can be mounted and fixed using a concave lens carrier, preventing the impact of water flow on the lens. Connecting the concave lens carrier to the inside of the housing facilitates installation and reduces the space occupied by the carrier on the outside of the water tank. Connecting the UV lamp to the outside of the housing allows for easy connection to an external power source.

[0025] Preferably, the concave lens carrier is provided with an annular guide groove, the concave lens is inserted into and disposed in the annular guide groove, and the concave lens carrier is also provided with a detachable fixing member that can be inserted into the annular guide groove.

[0026] In this design, the annular concave guide groove and the fixing component work together to allow the concave lens to be easily inserted into the annular guide groove, fixing the concave lens in place without wobbling, thus improving the stability of fixing the concave lens and making it easier to replace the concave lens as needed.

[0027] Preferably, the concave lens carrier is sealed to the housing, and the portion of the ultraviolet lamp extending into the housing is placed in the sealed cavity between the concave lens carrier and the housing;

[0028] Alternatively, the sterilization component may further include a transparent UV lamp cover, which is disposed between the concave lens and the UV lamp, and the UV lamp cover is sealed to the UV lamp.

[0029] In this solution, there are two ways to seal the UV lamp. One method is to directly seal the concave lens carrier to the housing to protect the UV lamp inside the sealed cavity. In this case, a separate UV lamp cover is not required, saving materials and space. The other method is to seal the UV lamp with the UV lamp cover, which also protects the UV lamp. In this case, a seal between the concave lens carrier and the housing is not required, reducing the manufacturing and installation difficulty of the concave lens carrier. Furthermore, the transparent UV lamp cover does not affect the irradiation of UV light and also prevents water from entering the UV lamp and affecting its function.

[0030] Preferably, the sterilization component further includes a transparent UV lamp cover, which is disposed between the concave lens and the UV lamp, and the portion of the UV lamp extending into the housing is sealed to the UV lamp cover; the sterilization component further includes a locking device, which is disposed on the inner side of the housing, sleeved on the outer side of the UV lamp cover, and threadedly connected to the UV lamp cover.

[0031] In this solution, through the above-mentioned setup, the locking device locks part of the ultraviolet lamps on the outside of the housing to the housing from the inside, securing the ultraviolet lamps and reducing the space occupied by the ultraviolet lamps inside the housing. This helps to eliminate areas inside the housing that cannot be irradiated by ultraviolet light, thereby improving the sterilization and disinfection effect.

[0032] A water purifier, wherein a water tank as described above is installed inside the water purifier.

[0033] In this solution, the water purifier increases the area that can be irradiated by ultraviolet light by installing the aforementioned water tank, thereby reducing the area inside the water tank that cannot be irradiated by ultraviolet light and improving the sterilization and disinfection effect.

[0034] The positive and progressive effects of this utility model are as follows: the water tank and the water purifier including it increase the area that can be irradiated by ultraviolet light, thereby reducing the area inside the water tank that cannot be irradiated by ultraviolet light and improving the sterilization and disinfection effect. Attached Figure Description

[0035] Figure 1 This is a three-dimensional structural diagram of the water tank in Embodiment 1 of this utility model.

[0036] Figure 2 This is a front view of the water tank in Embodiment 1 of this utility model.

[0037] Figure 3 This is a top view of the water tank in Embodiment 1 of this utility model.

[0038] Figure 4 for Figure 3 A cross-sectional view along the AA direction.

[0039] Figure 5 for Figure 4 A magnified structural diagram of part B in the middle.

[0040] Figure 6 This is a schematic diagram illustrating the operation steps of controlling the water tank to replenish water and turning on the ultraviolet lamp in Embodiment 1 of this utility model.

[0041] Explanation of reference numerals in the attached figures:

[0042] Water tank 1

[0043] Casing 2

[0044] Side view 21

[0045] Bottom 22

[0046] Positioning hole 23

[0047] Mounting hole 24

[0048] Inlet 25

[0049] Outlet 26

[0050] Top cover 3

[0051] Sterilization component 4

[0052] UV lamp 41

[0053] Concave lens 42

[0054] Concave lens carrier 43

[0055] Annular guide groove 431

[0056] Fastener 432

[0057] Support column 44

[0058] UV lamp cover 45

[0059] Locking device 46

[0060] Indicator 5

[0061] Indicator 51

[0062] Water level detection device 6 Detailed Implementation

[0063] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0064] Example 1

[0065] This embodiment provides a water tank 1 for storing water and sterilizing it. The water tank 1 can be used in water purifiers or other equipment that requires water purification and sterilization.

[0066] like Figure 1-6 As shown, the water tank 1 includes a shell 2, and at least one sterilization component 4 is provided on the side 21 and / or bottom 22 of the shell 2. The sterilization component 4 includes an ultraviolet lamp 41 and at least one concave lens 42. The concave lens 42 is located in front of the ultraviolet lamp 41 along the direction in which the ultraviolet light is emitted by the ultraviolet lamp 41; all the ultraviolet light emitted by the ultraviolet lamp 41 passes through the concave lens 42.

[0067] Specifically, in this embodiment, the water tank 1 is a cuboid container, including a shell 2 and a top cover 3. A sterilization component 4 is disposed on the bottom surface of the shell 2. The concave lens 42 is circular in shape, thin in the middle and thick at both sides, and has a diverging effect on the ultraviolet light emitted by the ultraviolet lamp 41. The diameter of the concave lens 42 is not less than the diameter of the ultraviolet lamp 41, and the relative position between the concave lens 42 and the ultraviolet lamp 41 is adjusted so that all the ultraviolet light emitted by the ultraviolet lamp 41 passes through the concave lens 42. In other embodiments, depending on the shape and size of the water tank 1 and the required sterilization effect, the sterilization component 4 can also be disposed on the side 21 of the shell 2, and multiple sterilization components 4 can also be disposed on the bottom surface 22 and / or the side 21 to more effectively eliminate dead zones that are not reached by ultraviolet light. In other embodiments, the structural form for installing and fixing the ultraviolet lamp 41 and the concave lens 42 can also be adjusted according to the specific structural requirements.

[0068] The water tank 1, through the concave lens 42, can diffuse the ultraviolet light emitted by the ultraviolet lamp 41, increasing the area that can be irradiated by the ultraviolet light, thus increasing the sterilization area of ​​the sterilization component 4. This reduces the area within the water tank 1 that cannot be irradiated by ultraviolet light, thereby reducing the dead zone area and improving the sterilization and disinfection effect. Specifically, the concave lens 42 is positioned in front of the ultraviolet lamp 41 along the direction of ultraviolet light emission; and its position is adjusted so that all ultraviolet light passes through the concave lens 42, ensuring that the scattering area of ​​the concave lens 42 is greater than the irradiation area of ​​the ultraviolet lamp 41.

[0069] In this embodiment, the sterilization component 4 is located on the bottom surface 22 of the housing 2, which facilitates the effective sterilization and disinfection of bacteria or harmful substances deposited on the bottom surface 22 by the ultraviolet lamp 41, thereby improving the sterilization and disinfection effect. Furthermore, the concave lens 42 is located inside the water tank 1, positioned higher than the bottom surface 22, which facilitates its installation and makes the outer surface of the water tank 1 relatively flat, making it easier to assemble with other components outside the water tank 1.

[0070] In other embodiments, the concave lens 42 may be positioned below the bottom surface 22 or embedded in the bottom wall of the housing 2. For example, a cavity may extend outward from the central area of ​​the bottom surface 22 of the housing 2, which is dedicated to housing the sterilization component 4. The ultraviolet lamp 41 and the concave lens 42 are all placed in this sunken cavity, so that the position of the concave lens 42 is lower than the bottom surface 22 of the housing 2, ensuring that the water above the bottom surface 22 can be irradiated by ultraviolet light, which is beneficial to further improve the sterilization and disinfection effect.

[0071] In this embodiment, the sterilization component 4 is positioned at the center of the bottom surface 22, ensuring that the water surrounding the sterilization component 4 within the water tank 1 is symmetrical or nearly symmetrical with respect to it. This facilitates increased ultraviolet light irradiation area and uniform irradiation intensity at all locations. In other embodiments, the placement of the sterilization component 4 can be adjusted according to the shape and structure of the water tank 1. Multiple sterilization components 4 can also be used; for example, multiple sterilization components 4 can be spaced apart on the bottom surface 22 to more effectively eliminate dead zones where ultraviolet light cannot reach.

[0072] The diameter of the concave lens 42 can be adjusted according to the desired effect of scattering ultraviolet light. More preferably, the diameter of the concave lens 42 can be set to be larger than the diameter corresponding to the maximum tilt angle of the ultraviolet light emitted by the ultraviolet lamp 41. This diameter ratio is beneficial to further improve the scattering area of ​​the concave lens 42.

[0073] The concave lens 42 and the ultraviolet lamp 41 are coaxially arranged so that the ultraviolet lamp 41 is directly facing the concave lens 42, thus avoiding the possibility that the ultraviolet light emitted from the edge of the ultraviolet lamp 41 cannot pass through the concave lens 42, and ensuring that all ultraviolet light passes through the concave lens 42.

[0074] Among them, such as Figure 1 and Figure 4 As shown, the water tank 1 also includes an inlet 25 and an outlet 26. The inlet 25 is located on the side 21 of the shell 2, and the outlet 26 is located on the bottom 22 and is closer to the sterilization component 4 than the side of the shell 2. This reduces the possibility that the water flow at the outlet 26 cannot be irradiated by ultraviolet light, which is beneficial to improving the sterilization and disinfection effect.

[0075] Among them, such as Figure 4As shown, the housing 2 is also equipped with an indicator device 5, which includes an indicator 51 and a controller (not shown in the figure). In this embodiment, the indicator device 5 is specifically an LED light device with a controller, which is installed on the side 21 of the housing 2. The indicator 51 is specifically an LED light, and the controller is installed inside the housing of the LED light. The controller is electrically connected to the ultraviolet lamp 41 and the indicator 51. Specifically, the controller can control the ultraviolet lamp 41 to turn on or off by electrically connecting to the switch of the ultraviolet lamp 41, and control the LED light to emit an indicator signal according to the control of the ultraviolet lamp 41 to turn on or off. By controlling the ultraviolet lamp 41 to turn on or off by the controller, the lifespan of the ultraviolet lamp 41 can be improved, ensuring effective sterilization and disinfection effects; by controlling the indicator 51 to emit an indicator signal, the user can know in a timely manner whether the sterilization component 4 is in working condition, which facilitates the decision on whether to turn on the ultraviolet lamp 41 or take other actions. The controller can be a component included in the indicator device 5 or a separate control component.

[0076] In other embodiments, depending on the selected indicator device 5, the controller may also be external to the LED light, meaning the controller is a component of the water tank 1 and not housed within the LED light's housing 2. The controller can still establish an electrical connection with the UV lamp 41 and the LED light. In other embodiments, the indication method can also be varied, for example, using an audio signal as the indication signal.

[0077] Among them, such as Figure 1 and Figure 4 As shown, the housing 2 is also equipped with a water level detection device 6, which is specifically a probe-shaped TDS (Total Dissolved Solids) water level detector, also known as a TDS probe. The water level detector is inserted into the water tank 1 from the top cover 3. The water level detection device 6 can detect the water level in the housing 2 and generate a water level signal. The controller controls the opening or closing of the water inlet according to the water level signal, which can adjust the water volume in the water tank 1. At the same time, it is also beneficial to adjust the water volume to the range where the ultraviolet lamp 41 can effectively sterilize and disinfect, thereby ensuring the sterilization and disinfection effect.

[0078] In other embodiments, the water level detection device 6 can take various forms, and its location can also be on the side 21 of the housing 2. Multiple sensors can also be used to detect water levels more accurately, allowing for more accurate identification of water level heights and changes.

[0079] like Figure 5As shown, the sterilization component 4 also includes a concave lens carrier 43 for mounting the concave lens 42. The concave lens carrier is connected to the inner side of the housing 2 via four support columns 44. The bottom surface 22 of the housing 2 has four positioning holes 23 and one mounting hole 24 for an ultraviolet lamp 41. The four support columns 44 are installed in the four positioning holes 23. The ultraviolet lamp 41 is connected to the outer side of the housing 2. One end of the ultraviolet lamp 41 is connected to an external power source, and part of the ultraviolet lamp 41 extends into the housing 2 through the mounting hole 24, facing the concave lens 42. The concave lens 42 can be fixed by the concave lens carrier 43, avoiding the impact of water flow on the concave lens. Connecting the concave lens carrier 43 to the inner side of the housing 2 facilitates installation and reduces the space occupied by the water tank. Connecting the ultraviolet lamp 41 to the outer side of the housing facilitates the establishment of an electrical connection with an external power source.

[0080] The concave lens carrier 43 has an annular guide groove 431 inside, and the concave lens 42 is inserted into and positioned within the annular guide groove 431. The concave lens carrier 43 also has a detachable T-shaped fixing member 432 that can be inserted into the annular guide groove 431. Through the cooperation between the annular guide groove 431 and the fixing member 432, the concave lens 42 can be easily inserted into the annular guide groove 431, fixing the concave lens 42 without wobbling, improving the stability of fixing the concave lens 42, and also facilitating the replacement of the concave lens 42 as needed.

[0081] The sterilization component 4 also includes a transparent ultraviolet lamp cover 45, which is disposed between the concave lens 42 and the ultraviolet lamp 41, and is sealed to the ultraviolet lamp 41. The transparent ultraviolet lamp cover 45 and the above-mentioned arrangement do not affect the irradiation of ultraviolet light, and also prevent water from entering the ultraviolet lamp 41 and affecting its function.

[0082] In other embodiments, the UV lamp 41 can be sealed in other ways. For example, the shape and size of the concave lens carrier 43 can be adjusted to directly seal the concave lens carrier 43 to the housing 2, with the portion of the UV lamp 41 extending into the housing 2 placed in the sealed cavity between the concave lens carrier 43 and the housing 2. Thus, there are two ways to seal the UV lamp 41. One method is to directly seal the concave lens carrier 43 to the housing 2, protecting the UV lamp 41 within its sealed cavity. In this case, a separate UV lamp cover is not required, saving materials and space. The other method, as described above, is to seal the UV lamp 41 with a UV lamp cover 45, which also protects the UV lamp 41. In this case, a sealing connection between the concave lens carrier 43 and the housing 2 is not required, reducing the manufacturing and installation difficulty of the concave lens carrier 43. Furthermore, the transparent UV lamp cover 45 does not affect the irradiation of UV light and prevents water from entering the UV lamp 41, thus affecting its function.

[0083] The sterilization component 4 also includes a locking device 46. A portion of the ultraviolet lamp 41 passes through the mounting hole 24 from the outside of the housing 2 and is sealed to the ultraviolet lamp cover 45 located inside the housing 2. The locking device 46 is specifically a locking ring located inside the housing 2. The locking ring has internal threads, and the ultraviolet lamp cover 45 has external threads. Through the engagement of the internal and external threads, the locking ring and the ultraviolet lamp cover 45 are threaded together. This connection structure locks a portion of the ultraviolet lamp 41 located outside the housing 2 onto the housing 2 from the inside, reducing the space occupied by the ultraviolet lamp 41 within the housing 2. This helps eliminate areas within the housing 2 that cannot be irradiated by ultraviolet light, thereby improving the sterilization and disinfection effect.

[0084] like Figure 6 The diagram illustrates an example of the operation steps for controlling water tank 1 to replenish or stop water replenishment, and to perform ultraviolet sterilization and disinfection. The operating method is explained below:

[0085] 1. When inlet 25 is opened, water tank 1 begins to be filled with water. When the water level reaches the water level detector (i.e., the TDS probe generates data, and the data remains unchanged afterward), inlet 25 closes, and water filling stops. When outlet 26 is opened, the liquid level in water tank 1 begins to drop. When the water level drops to a certain height, causing it to fall below the water level detector (i.e., the TDS probe generates no data), outlet 26 closes, and inlet 25 opens, resuming water filling. Based on this principle, the above operation can be repeated to achieve water filling or stopping.

[0086] 2. To prevent bacterial growth in the water tank 1 due to long-term storage, an ultraviolet lamp 41 is installed at the bottom of the tank 1. However, the irradiation area of ​​the ultraviolet lamp 41 is limited, which can lead to dead zones in some areas of the tank 1, affecting the sterilization effect. A concave lens carrier 43 is installed above the ultraviolet lamp 41. A guide groove 431 is cut into the center of the square ring on the concave lens carrier 43. The concave lens 42 can be inserted into the concave lens carrier 43 through the guide groove 431 and fixed within the square ring by a T-shaped fixing body. The concave lens 42 is thin in the middle and thick at the edges, and it has a light-diverging effect. Based on this principle, the concave lens 42 is installed above the ultraviolet lamp 41 to increase the irradiation area of ​​the ultraviolet lamp 41 and enhance the sterilization effect.

[0087] 3. The controller in the LED light controls the changes in LED light intensity and the on / off state of the UV lamp 41. When the UV lamp 41 is on for extended periods, its lifespan is reduced, and the sterilization effect is only slightly enhanced. Therefore, the controller manages the on / off state of the UV lamp 41. After the UV lamp 41 has been on for 30 minutes, it will turn off for 3 hours and then turn back on. When the UV lamp 41 is on, the LED light will display red, indicating that it is in sterilization mode. When the UV lamp 41 is off, the LED light will display green, indicating that the sterilization mode is off.

[0088] Example 2

[0089] This embodiment provides a water purifier, which has a water tank 1 as described in Embodiment 1 installed inside. By installing the water tank 1, the water purifier increases the area that the ultraviolet lamp 41 can irradiate, improves the sterilization area of ​​the sterilization component 4, and reduces the possibility that some areas inside the water tank 1 cannot be irradiated by ultraviolet light, thereby improving the sterilization and disinfection effect.

[0090] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A water tank for storing and sterilizing water, comprising a housing, at least one sterilization assembly provided on the housing, the sterilization assembly comprising an ultraviolet lamp, characterized in that the sterilization assembly is provided on a side surface and / or a bottom surface of the housing, the sterilization assembly further comprises at least one concave lens provided in front of the ultraviolet lamp along a direction in which the ultraviolet lamp emits ultraviolet light, and the ultraviolet light emitted by the ultraviolet lamp passes through the concave lens. The sterilization assembly is provided at the bottom surface of the housing, and the concave lens is positioned at a level not lower than or higher than the bottom surface.

2. The water tank of claim 1, wherein At least one sterilization assembly is provided at a central position of the bottom surface.

3. The water tank of claim 2, wherein The concave lens is coaxially arranged with the ultraviolet lamp.

4. The water tank of claim 1, wherein The sterilization assembly is provided at the bottom surface of the housing, the water tank further comprises a water inlet and a water outlet, the water outlet is provided at the bottom surface and is closer to the sterilization assembly relative to a side surface of the housing.

5. The water tank of claim 1, wherein The sterilization assembly further comprises a concave lens carrier for mounting the concave lens, the concave lens carrier is connected to an inner side of the housing, the ultraviolet lamp is connected to an outer side of the housing, and a portion of the ultraviolet lamp extends into the housing and faces the concave lens.

6. The water tank of claim 1, wherein The concave lens carrier is provided with an annular guide groove, the concave lens is inserted into the annular guide groove, and the concave lens carrier is further provided with a fixing member which is detachable and insertable into the annular guide groove.

7. The water tank of claim 6, wherein The concave lens carrier is sealingly connected to the housing, and the portion of the ultraviolet lamp extending into the housing is arranged in a sealing cavity between the concave lens carrier and the housing.

8. The water tank of claim 6, wherein Alternatively, the sterilization assembly further comprises a transparent ultraviolet lamp cover, the ultraviolet lamp cover is provided between the concave lens and the ultraviolet lamp, and the ultraviolet lamp cover is sealingly connected to the ultraviolet lamp. The sterilization assembly further comprises a transparent ultraviolet lamp cover, the ultraviolet lamp cover is provided between the concave lens and the ultraviolet lamp, and the portion of the ultraviolet lamp extending into the housing is sealingly connected to the ultraviolet lamp cover.

9. The water tank of claim 8, wherein The sterilization assembly further comprises a locking device, the locking device is provided on an inner side of the housing and is sleeved on an outer side of the ultraviolet lamp cover and is threadedly connected to the ultraviolet lamp cover. The water purifier is provided with the water tank as claimed in any one of claims 1-9.

10. A water purifier characterized by comprising: ​

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