Sterilization water tank and water purifier comprising same

By incorporating a lifting mechanism and a liquid level detection unit into the water purifier, and adjusting the impeller height according to the liquid level, the problem of excessive bacteria in the dead corners of the water tank is solved, achieving a rapid and effective sterilization effect and improving the user experience of the water purifier.

CN224377728UActive Publication Date: 2026-06-19NINGBO FOTILE KITCHEN WARE CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGBO FOTILE KITCHEN WARE CO LTD
Filing Date
2025-07-04
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

When the water tank of an existing water purifier is at different liquid levels, the water in the dead corners is difficult to be effectively turbulent and sterilized, leading to the problem of excessive bacteria. This is especially true when the interval between water intake by the user is short, and there is still a risk of excessive bacteria.

Method used

By installing a lifting unit and a liquid level detection unit in the water purifier, which are electrically connected to the control board, the height of the impeller in the water tank is adjusted according to the liquid level to ensure that the impeller can rise to the top of the water tank to turbulent the water flow in dead corners and bring it into the working range of the sterilization unit for sterilization.

Benefits of technology

It effectively reduces sterilization time, avoids excessive bacteria in the dead corners at the top of the water tank, improves user experience, and ensures the sterilization effect of the water purifier within a short time interval.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224377728U_ABST
    Figure CN224377728U_ABST
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Abstract

This utility model provides a sterilization water tank and a water purifier containing the same. The sterilization water tank includes a turbulence-inducing section and a sterilization section. The turbulence-inducing section includes a drive motor and an impeller. The sterilization water tank further includes: a lifting section disposed between the drive motor and the impeller; a liquid level detection section disposed within the sterilization water tank; and a control board. The lifting section, the liquid level detection section, and the drive motor are all electrically connected to the control board. When the liquid level in the sterilization water tank rises, the lifting section drives the impeller to rise along the height direction of the sterilization water tank. By electrically connecting the lifting section and the liquid level detection section to the control board, the height of the impeller within the sterilization water tank can be adjusted according to the liquid level detected by the liquid level detection section. This avoids the situation where the impeller turbulents the water flow from the dead corner near the top of the sterilization water tank to the working range of the sterilization section, resulting in a long time consumption, thus solving the problem of excessive bacteria in the water of the sterilization water tank.
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Description

Technical Field

[0001] This utility model relates to the field of water tank sterilization technology, and in particular to a sterilization water tank and a water purifier containing the same. Background Technology

[0002] As people's living standards improve, many households purchase and use countertop water purifiers. However, these machines usually have water tanks, which inevitably lead to problems with excessive bacteria counts. Even with sterilizers installed, there are always blind spots that cannot be reached, and these blind spots are often accompanied by excessive bacteria.

[0003] Existing technologies addressing the issue of excessive bacteria in dead corners typically involve installing an impeller inside the water tank. The idea is that the impeller agitates the water, ensuring thorough mixing between dead and non-dead corner areas, allowing water from the dead corners to flow into the sterilizer's working range for effective sterilization and to guarantee drinking water safety. However, in actual use, it has been found that the water level in the tank fluctuates constantly. While the impeller, located at the bottom of the tank, effectively turbulent the water in dead corners when the water level is low, it only effectively turbulentizes the water in the dead corners at the bottom of the tank when the water level is high. Its effect on the dead corners at the top of the tank is poor. Furthermore, the sterilization process is time-consuming and ineffective. If the interval between two water draws is short, the water may still contain excessive bacteria. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defect of excessive bacteria in dead corners of different heights in the water tank when the water level is different in the prior art, and to provide a sterilization water tank and a water purifier containing it.

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

[0006] A sterilization water tank includes a turbulence-inducing section and a sterilization section. The turbulence-inducing section includes a drive motor and an impeller. The sterilization water tank also includes:

[0007] A lifting unit is disposed between the drive motor and the impeller;

[0008] A liquid level detection unit is disposed inside the sterilization water tank;

[0009] The control board, the lifting unit, the liquid level detection unit and the drive motor are all electrically connected to the control board. When the liquid level in the sterilization water tank rises, the lifting unit drives the impeller to rise along the height direction of the sterilization water tank.

[0010] In this solution, the lifting unit and the liquid level detection unit are electrically connected to the control board. The height of the impeller in the sterilization tank is adjusted according to the liquid level detected by the liquid level detection unit. For low liquid levels, the impeller does not need to rise. For medium liquid levels, the impeller rises to the middle of the height direction of the sterilization tank. For high liquid levels, the impeller rises to the top of the height direction of the sterilization tank, that is, close to the top plate of the sterilization tank. This effectively turbulents the water flow in the dead corners near the top plate of the sterilization tank for different liquid level conditions, so that the water flow can flow into the working range of the sterilization unit and be effectively sterilized. This avoids the situation where the impeller turbulents the water flow in the dead corners near the top plate of the sterilization tank to the working range of the sterilization unit, which takes a long time. At the same time, it solves the problem that the water still has excessive bacteria when the interval between two water draws is short.

[0011] Preferably, the lifting part is a hydraulic rod, which is coaxially arranged with the output shaft of the drive motor, and the hydraulic rod is used to drive the impeller to rotate.

[0012] In this solution, the above settings enable the lifting unit to drive the impeller to rise and fall, and when the lifting unit is located between the drive motor and the impeller, the drive motor drives the impeller to rotate.

[0013] Preferably, the sterilization tank further includes a support frame, which is disposed at the bottom of the sterilization tank. The bottom plate of the sterilization tank has a support hole, and the support frame extends into the sterilization tank through the support hole. One end of the liquid level detection unit and the sterilization unit are both connected to the support frame, and the sterilization unit is located inside the sterilization tank. A sealing element is provided between the support frame and the bottom plate of the sterilization tank, and the sterilization unit is an LED sterilizer.

[0014] In this solution, a bracket is installed to fix one end of the liquid level detection unit and the sterilization unit, thereby preventing the liquid level detection unit and the sterilization unit from being affected by the impeller-induced water flow disturbance.

[0015] Preferably, the side panel of the sterilization water tank is provided with a drain outlet, which is located near the bottom of the sterilization water tank and is offset from the support.

[0016] In this solution, the above-mentioned settings are used to avoid interference between the sewage outlet and the support structure.

[0017] Preferably, the liquid level detection unit includes a plurality of liquid level floats, which are sequentially arranged along the height direction of the sterilization water tank in areas near the bottom, top, and middle of the sterilization water tank.

[0018] In this solution, the above settings are used to detect the liquid level in different height areas within the sterilization tank, thereby improving detection accuracy.

[0019] Preferably, the top plate of the sterilization water tank is provided with a water inlet, an overflow outlet, an exhaust outlet and a mounting hole, the water inlet, the overflow outlet, the exhaust outlet and the mounting hole are staggered from each other, and the sterilization water tank also includes a temperature probe, the temperature probe extending into the sterilization water tank through the mounting hole.

[0020] In this solution, the above-mentioned settings are used to avoid structural interference in the pipes connecting the inlet, overflow, vent, and mounting hole. At the same time, a temperature probe is installed so that the sterilization tank can detect the water temperature.

[0021] Preferably, the top plate of the sterilization water tank is also provided with a connecting part, and multiple connecting parts are provided, and the multiple connecting parts are located on the outer periphery of the drive motor. The base of the drive motor is connected to the connecting part by bolts.

[0022] In this solution, the above settings are used to fix the drive motor.

[0023] Preferably, the top plate of the sterilization tank is further provided with an ear plate, which extends from the top plate of the sterilization tank away from the sterilization tank, and the ear plate is used to connect to an external structure.

[0024] In this solution, the above-mentioned settings are used to fix the sterilization water tank, thereby ensuring the stability of the sterilization water tank caused by impeller turbulence and preventing the sterilization water tank from shaking.

[0025] Preferably, the outer periphery of the sterilization water tank is wrapped with sound insulation cotton.

[0026] In this solution, the above-mentioned settings are used to reduce noise when the water in the sterilization tank is turbulently circulated by the impeller.

[0027] A water purifier, the water purifier including the sterilization water tank as described above.

[0028] In this solution, the water purifier includes the aforementioned sterilization water tank, which effectively turbulent the water at different levels, reducing the time required for sterilization. It is suitable for situations where the interval between two water intakes is short. At the same time, it can effectively sterilize and avoid sterilization dead zones, ensuring that the water flowing from the water purifier meets the user's needs and improves the user experience.

[0029] The positive and progressive effects of this utility model are as follows: By electrically connecting the lifting unit and the liquid level detection unit to the control board, the height of the impeller in the sterilization water tank is adjusted according to the liquid level detected by the liquid level detection unit. For low liquid levels, the impeller does not need to rise; for medium liquid levels, the impeller rises to the middle of the height direction of the sterilization water tank; and for high liquid levels, the impeller rises to the top of the height direction of the sterilization water tank, that is, close to the top plate of the sterilization water tank. This effectively turbulents the water flow in the dead corners near the top plate of the sterilization water tank for different liquid level conditions, so that the water flow can flow into the working range of the sterilization unit and be effectively sterilized by the sterilization unit. This avoids the situation where the impeller turbulents the water flow in the dead corners near the top plate of the sterilization water tank to the working range of the sterilization unit, which takes a long time. At the same time, it solves the problem that the water still has excessive bacteria when the interval between two water draws is short. Attached Figure Description

[0030] Figure 1 This diagram shows the positional relationship between the sound insulation cotton and the sterilization water tank in a preferred embodiment of the present invention.

[0031] Figure 2 This is a perspective view of the sterilization water tank of a preferred embodiment of the present invention.

[0032] Figure 3 This is a schematic diagram of the structure of a sterilization water tank according to a preferred embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] spoiler 1

[0035] Drive motor 11

[0036] Impeller 12

[0037] Sterilization Section 2

[0038] Lifting Unit 3

[0039] Liquid level detection unit 4

[0040] Bracket 5

[0041] bracket hole 51

[0042] Seal 52

[0043] 6 sewage outlets

[0044] Inlet 7

[0045] Overflow outlet 8

[0046] Exhaust port 9

[0047] Mounting hole 10

[0048] Temperature probe 20

[0049] Connecting part 30

[0050] Earplate 40

[0051] 50mm sound insulation cotton

[0052] Height direction A Detailed Implementation

[0053] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0054] This embodiment provides a sterilization water tank, the specific structure of which is as follows: Figure 1 , Figure 2 and Figure 3 As shown, the sterilization water tank includes a turbulence-inducing section 1 and a sterilization section 2. The turbulence-inducing section 1 includes a drive motor 11 and an impeller 12. The sterilization water tank also includes:

[0055] Lifting unit 3 is disposed between drive motor 11 and impeller 12;

[0056] Liquid level detection unit 4 is installed inside the sterilization water tank;

[0057] The control board (not shown in the figure), the lifting part 3, the liquid level detection part 4 and the drive motor 11 are all electrically connected to the control board. When the liquid level in the sterilization water tank rises, the lifting part 3 drives the impeller 12 to rise along the height direction A of the sterilization water tank.

[0058] Specifically, the drive motor 11 is mounted on the top plate of the sterilization tank, the impeller 12 is located inside the sterilization tank, and the lifting part 3 is located between the output end of the drive motor 11 and the impeller 12. The lifting part 3 can be a telescopic rod structure as in the prior art, so as to drive the impeller 12 to move up and down along the height direction of the sterilization tank. The liquid level detection part 4 is located inside the sterilization tank and on the side of the lifting part 3, that is, the liquid level detection part 4 and the lifting part 3 are staggered. The liquid level detection part 4 can be a liquid level monitor as in the prior art, so as to accurately detect the liquid level in the sterilization tank. At the same time, both the liquid level detection part 4 and the lifting part 3 are electrically connected to the control board. The control board is a control board structure that receives signals as in the prior art. The lifting part 3 adjusts the height of the impeller 12 in the sterilization tank according to the liquid level detected by the liquid level detection part 4.

[0059] When the level detection unit 4 detects that the water in the sterilization tank is at a low level, the impeller 12 does not need to rise. When the level detection unit 4 detects that the water in the sterilization tank is at a medium level, the impeller 12 rises to the middle of the height A direction of the sterilization tank. When the level detection unit 4 detects that the water in the sterilization tank is at a high level, the impeller 12 rises to the top of the height A direction of the sterilization tank, that is, close to the top plate of the sterilization tank. This effectively turbulents the water flow in the dead corner near the top plate of the sterilization tank for different water level conditions, so that the water flow can reach the working range of the sterilization unit 2 and be sterilized. The sterilization section 2 effectively sterilizes water. Compared to the impeller 12, which is always located at the bottom of the sterilization tank and turbulents the water at the bottom, the water near the dead corner of the top plate of the sterilization tank takes a long time to be turbulent. With the cooperation of the lifting section 3 and the liquid level detection section 4, the impeller 12 can quickly turbulent the water flow near the dead corner of the top plate of the sterilization tank, avoiding the situation where the water flow near the dead corner of the top plate of the sterilization tank is turbulently drawn into the working range of the sterilization section 2, which takes a long time. At the same time, it solves the problem that the water still has excessive bacteria when the interval between two water draws is short.

[0060] It should be noted that the control board and its control logic in this embodiment are existing technologies. This embodiment does not improve the control board and its control logic, and will not be described in detail here.

[0061] like Figure 3 As shown, in this embodiment, the lifting part 3 is a hydraulic rod, which is coaxially arranged with the output shaft of the drive motor 11, and the hydraulic rod is used to drive the impeller 12 to rotate.

[0062] Specifically, one end of the hydraulic rod is connected to the output shaft of the drive motor 11, and the other end is connected to the impeller 12. The drive motor 11 is electrically connected to the control board so that it can be turned on when turbulence is required. The output shaft of the drive motor 11 drives the hydraulic rod to rotate, and the hydraulic rod rotates and drives the impeller 12 to rotate. The hydraulic rod can be powered by the drive motor 11. Of course, in other embodiments, the hydraulic rod can be driven by a separate hydraulic tank or power source to realize the function of the lifting part 3 driving the impeller 12 to rise and fall, and when the lifting part 3 is located between the drive motor 11 and the impeller 12, the drive motor 11 drives the impeller 12 to rotate.

[0063] In this embodiment, the sterilization tank also includes a support 5, which is located at the bottom of the sterilization tank. The bottom plate of the sterilization tank has a support hole 51. The support 5 extends into the sterilization tank through the support hole 51. One end of the liquid level detection unit 4 and the sterilization unit 2 are both connected to the support 5, and the sterilization unit 2 is located inside the sterilization tank. A sealing element 52 is provided between the support 5 and the bottom plate of the sterilization tank. The sterilization unit 2 is an LED sterilizer.

[0064] Specifically, the sterilization tank is equipped with a base plate to seal the bottom of the tank. A support hole 51 is provided on the base plate, and a support 5 is also provided. The support 5 is made of sheet metal and partially extends into the support hole 51 to fill it. A sealing element 52 is provided between the base plate and the support 5 to seal the gap between them. A liquid level detection unit 4 extends into the sterilization tank, and one end of the unit is connected to the portion of the support 5 that extends into the tank. This secures the end of the liquid level detection unit 4, preventing it from shaking due to the impeller 12 after lifting and lowering, thus improving stability.

[0065] In this embodiment, the sterilization unit 2 is mounted on the support 5, i.e., at the bottom of the sterilization tank, to fix the sterilization unit 2 and prevent it from shaking due to the impeller 12. The sterilization unit 2 is an LED sterilizer, which uses light emitted by the LED sterilizer to sterilize the water flow. Compared to the sterilization unit 2 being located at the top of the sterilization tank, the sterilization unit 2 located at the bottom is always in the water flow, eliminating the light propagation path from the air to the water flow and improving the sterilization effect.

[0066] In this embodiment, the side plate of the sterilization water tank is provided with a drain port 6, which is located near the bottom of the sterilization water tank and is offset from the support 5.

[0067] Specifically, the drain outlet 6 is located on the side plate of the sterilization water tank and near the bottom of the sterilization water tank, so that the drain outlet 6 is staggered from the support 5 to avoid structural interference between the drain outlet 6 and the support 5.

[0068] In this embodiment, the liquid level detection unit 4 includes multiple liquid level floats, which are sequentially arranged along the height direction A of the sterilization water tank in areas near the bottom, top, and middle of the sterilization water tank.

[0069] Specifically, this embodiment uses three level floats as an example, but the number is not limited. One level float is positioned near the top of the sterilization tank, another near the bottom, and the remaining float is located in the middle of the tank. This allows for the following: when the water level in the tank is low, there is no need to raise or lower the impeller 12; when the water level is medium, the level detection unit 4 and the lifting unit 3 work together to raise the impeller 12 to the middle of the tank; similarly, when the water level is high, the level detection unit 4 and the lifting unit 3 work together to raise the impeller 12 to the top of the tank. By increasing the number of level floats and positioning them in different areas, level detection at different heights within the sterilization tank can be achieved, improving detection accuracy.

[0070] In this embodiment, the top plate of the sterilization water tank is provided with an inlet 7, an overflow port 8, an exhaust port 9 and a mounting hole 10. The inlet 7, overflow port 8, exhaust port 9 and mounting hole 10 are staggered. The sterilization water tank also includes a temperature probe 20, which extends into the sterilization water tank through the mounting hole 10.

[0071] Specifically, the inlet 7, overflow 8, vent 9, and mounting hole 10 are all cylindrical structures on the top plate, extending away from the bottom plate of the sterilization tank. The axis of the cylindrical structure extends into the sterilization tank to connect with pipelines of different functions. By staggering the inlet 7, overflow 8, vent 9, and mounting hole 10, structural interference can be avoided in the pipelines connected to the inlet 7, overflow 8, vent 9, and mounting hole 10.

[0072] Meanwhile, this embodiment also includes a temperature probe 20, which is a temperature measuring structure in the prior art. The detection end of the temperature probe 20 extends into the mounting hole 10 so that the sterilization water tank can detect the water temperature.

[0073] In this embodiment, a connecting part 30 is also provided on the top plate of the sterilization water tank. Multiple connecting parts 30 are provided, and multiple connecting parts 30 are provided on the outer periphery of the drive motor 11. The base of the drive motor 11 is connected to the connecting part 30 by bolts.

[0074] Specifically, the connecting part 30 protrudes from the top plate and extends away from the bottom plate. The connecting part 30 has a cylindrical structure and a threaded hole. The connecting part 30 is staggered from the water inlet 7, overflow port 8, vent port 9, and mounting hole 10. This embodiment uses three connecting parts 30 as an example, but the number is not limited. The three connecting parts 30 are arranged in a triangle and correspond to the base of the drive motor 11. The base is connected to the threaded hole of the connecting part 30 by bolts to fix the drive motor 11 and prevent the drive motor 11 from shaking when it is turned on, which would affect the turbulence effect.

[0075] In this embodiment, an ear plate 40 is also provided on the top plate of the sterilization water tank. The ear plate 40 extends away from the top plate of the sterilization water tank and is used to connect to the external structure.

[0076] Specifically, the ear plate 40 can be L-shaped or a flat plate. One end of the ear plate 40 is welded to the top plate of the sterilization tank, and the other end of the ear plate 40 is provided with a through hole for connection with an external structure, such as the frame of the water purifier, or other structures, such as a frame or a structure for fixing. By setting the ear plate 40 to fix the sterilization tank, the stability of the sterilization tank turbulent by the impeller 12 is ensured, and the sterilization tank is prevented from shaking due to the turbulence of the impeller 12.

[0077] In this embodiment, the outer periphery of the sterilization water tank is wrapped with sound-insulating cotton 50. Specifically, the sound-insulating cotton 50 is disposed on the side of the sterilization water tank and is sleeved on the side plate of the sterilization water tank, so as to absorb and reduce noise when the water in the sterilization water tank is turbulent by the impeller 12. It is understood that the sound-insulating cotton 50 is a noise reduction material in the prior art, and will not be described in detail here.

[0078] This embodiment also provides a water purifier, which includes the aforementioned sterilization tank to effectively turbulent the water at different levels, reducing the sterilization time required. This is suitable for situations where the interval between two water intakes is short. Simultaneously, it effectively sterilizes, avoiding sterilization dead zones, ensuring that the water flowing from the purifier meets user needs and improving the user experience. This water purifier can also include a built-in control board, meaning the sterilization tank can share the same control board with the purifier, saving costs.

[0079] 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 sterilization water tank, the sterilization water tank comprising a turbulence-inducing section and a sterilization section, the turbulence-inducing section comprising a drive motor and an impeller, characterized in that, The sterilization water tank also includes: A lifting unit is disposed between the drive motor and the impeller; A liquid level detection unit is disposed inside the sterilization water tank; The control board, the lifting unit, the liquid level detection unit and the drive motor are all electrically connected to the control board. When the liquid level in the sterilization water tank rises, the lifting unit drives the impeller to rise along the height direction of the sterilization water tank.

2. The sterilization water tank as described in claim 1, characterized in that, The lifting unit is a hydraulic rod, which is coaxially arranged with the output shaft of the drive motor, and is used to drive the impeller to rotate.

3. The sterilization water tank as described in claim 1, characterized in that, The sterilization tank also includes a support frame, which is located at the bottom of the sterilization tank. The bottom plate of the sterilization tank has a support hole, and the support frame extends into the sterilization tank through the support hole. One end of the liquid level detection unit and the sterilization unit are both connected to the support frame, and the sterilization unit is located inside the sterilization tank. A sealing element is provided between the support frame and the bottom plate of the sterilization tank. The sterilization unit is an LED sterilizer.

4. The sterilization water tank as described in claim 3, characterized in that, The sterilization water tank has a drain outlet on its side panel. The drain outlet is located near the bottom of the sterilization water tank and is offset from the support.

5. The sterilization water tank as described in claim 1, characterized in that, The liquid level detection unit includes multiple liquid level floats, which are sequentially arranged along the height direction of the sterilization water tank in areas near the bottom, top, and middle of the sterilization water tank.

6. The sterilization water tank as described in claim 1, characterized in that, The sterilization water tank has an inlet, an overflow outlet, an exhaust outlet, and a mounting hole on its top plate. The inlet, overflow outlet, exhaust outlet, and mounting hole are staggered. The sterilization water tank also includes a temperature probe, which extends into the sterilization water tank through the mounting hole.

7. The sterilization water tank as described in claim 6, characterized in that, The top plate of the sterilization water tank is also provided with a connecting part, and there are multiple connecting parts, which are located on the outer periphery of the drive motor. The base of the drive motor is connected to the connecting part by bolts.

8. The sterilization water tank as described in claim 1, characterized in that, The top plate of the sterilization water tank is also provided with an ear plate, which extends from the top plate of the sterilization water tank away from the sterilization water tank and is used to connect to an external structure.

9. The sterilization water tank as described in claim 1, characterized in that, The outer periphery of the sterilization water tank is wrapped with sound insulation cotton.

10. A water purifier, characterized in that, The water purifier includes a sterilization water tank as described in any one of claims 1-9.