Sterilizer anti-overflow water feeding device and sterilizer

Abstract

The utility model discloses a kind of sterilizer anti-overflow water adding device and sterilizer, to solve the problem of manual water adding excess infiltration inside core component of sterilizer. The device includes water storage tank, water storage tank top is equipped with water inlet, water inlet is equipped with anti-overflow structure, the structure is composed of overflow groove around water inlet edge, water channel extending along the side wall of water storage tank and water outlet through sterilizer shell, three intercommunication form overflow path, can actively discharge excess water. Water channel middle section is equipped with reversible water baffle, water baffle is connected with water channel bottom by connecting shaft with elastic member, can be dynamically adjusted water channel flow cross section according to water flow velocity;Water inlet can also be assembled filter, water storage cover, water level sensor can be provided in water storage tank, overflow groove periphery is equipped with elastic sealing strip. The device is combined by mechanical structure and auxiliary function, realizes reliable anti-overflow effect, with impurity filtration, water level detection and other functions simultaneously, improve use convenience, reduce equipment failure risk.

Description

Technical Field

[0001] This utility model relates to the field of sterilization equipment technology, and more specifically, to a sterilizer anti-overflow water filling device and a sterilizer. Background Technology

[0002] In the fields of medical treatment, scientific research, and food processing, sterilizers are key equipment for achieving aseptic processing of goods, and their operational reliability directly affects the sterilization effect and the service life of the equipment. During operation, sterilizers require specific water sources (such as distilled water or purified water) as the sterilization medium, which are typically added manually to the equipment's water tank.

[0003] Traditional sterilizers have a simple water tank filling structure, typically involving direct water filling through a top inlet. Operators rely on visual inspection of the water level or the equipment's built-in level markings to determine the filling amount. This method has significant drawbacks: operator negligence or excessively rapid filling can easily cause the water level to exceed the tank's rated capacity and overflow. If the overflowing water seeps into the sterilizer, it may contact core components such as circuit modules and heating elements, causing short circuits, corrosion, and other malfunctions. This not only affects the sterilization process but also increases equipment maintenance costs and poses safety hazards.

[0004] While some improved sterilizers have added electronic liquid level detection devices to alert for abnormal water levels, these devices rely on sensors, circuits, and other electronic components. Prolonged operation in humid environments can lead to decreased sensitivity or malfunction. Furthermore, if the electronic components fail, the overflow prevention function is completely lost, resulting in insufficient reliability. In addition, existing overflow prevention structures often lack protection against impurities, allowing external dust and particles to easily enter the water tank through gaps between the inlet and the cover, contaminating the water and potentially clogging the sterilizer's spray and piping systems, thus affecting sterilization effectiveness.

[0005] Therefore, developing a sterilizer anti-overflow water filling device that is simple in structure, does not rely on complex electronic components, can reliably intercept and discharge excess water, and has impurity protection functions has become the key to solving the above problems. Summary of the Invention

[0006] This utility model provides a sterilizer anti-overflow water filling device and a sterilizer to solve the technical problems in the prior art where manual water filling of sterilizers relies on human experience and judgment, making it impossible to accurately obtain water level and water quality information. This can easily lead to insufficient water volume affecting the use effect or excessive water volume causing liquid to seep into the core components, accelerating the aging of the core components and corrosion of the circuit system, shortening the service life of the equipment, and the lack of impurity protection structure, which allows dust and debris to easily enter the sterilizer.

[0007] The first aspect of this utility model provides a sterilizer anti-overflow water filling device, including a water storage tank; the top of the water storage tank is provided with a water inlet, and the water inlet is provided with an anti-overflow structure, the anti-overflow structure including:

[0008] An overflow trough is provided around the edge of the water inlet. Its body has a concave cross section for accommodating water. The bottom of the trough is lower than the upper edge of the water inlet and is used to receive excess water that exceeds the rated water level of the water storage tank.

[0009] The water trough extends along the side wall of the water storage tank. One end of it is connected to the bottom of the overflow trough, and the other end extends downwards to the bottom of the sterilizer, forming a sloping drainage channel.

[0010] The water outlet is located at the end of the water trough and penetrates through the sterilizer shell, connecting to the external drainage path, and is used to discharge excess water guided by the water trough to the outside of the sterilizer.

[0011] The overflow trough, flow trough, and flow outlet are connected in sequence to form a complete overflow path, so as to avoid excessive water seeping into the core components inside the sterilizer.

[0012] Furthermore, the middle section of the water trough is equipped with a flip-up baffle plate. The baffle plate has a plate-like structure, with one edge rotatably connected to the bottom of the water trough via a connecting shaft, and the other edge is a free end. An elastic element is sleeved on the connecting shaft. In its natural state, the elastic element causes the free end of the baffle plate to be close to the bottom of the water trough, forming a small angle between them to allow water of normal flow to flow smoothly. When the water flow velocity in the water trough exceeds a preset threshold, the water flow impact force can overcome the elastic force of the elastic element, pushing the baffle plate to flip upward around the connecting shaft, increasing the angle between the baffle plate and the bottom of the water trough, and allowing more of the baffle plate's surface to extend into the internal space of the water trough, thereby reducing the effective flow cross-section of the water trough.

[0013] Furthermore, the elastic element is a torsion spring, one end of which is fixed to the bottom of the water trough and the other end is fixed to the bottom surface of the baffle plate; the width of the baffle plate is adapted to the inner width of the water trough, and its length is sufficient to significantly obstruct the water flow when it flips upward, so as to effectively reduce the flow channel at high flow rates.

[0014] Furthermore, the side wall of the water channel is provided with a limiting protrusion corresponding to the flipping path of the baffle plate. When the baffle plate flips upward to a preset angle, the limiting protrusion can abut against the top surface of the baffle plate to limit the maximum flipping angle of the baffle plate. The side of the baffle plate facing the direction of incoming water is provided with an upwardly protruding guide part, which is used to concentrate the water flow impact force to enhance the flipping response.

[0015] Furthermore, the contact vibration between the baffle plate and the side wall or limiting protrusion of the water channel during the flipping process can be transmitted to the detection component, triggering the detection component to change the signal transmission frequency and form an early warning signal that is different from the normal drainage state; the detection component is a vibration sensor or a liquid level detection device connected to the water channel.

[0016] Furthermore, the overflow tank is provided with an elastic sealing strip around its outer periphery. The sealing strip is arranged around the edge of the overflow tank and has a bent cross-section. One side is attached to the outer wall of the overflow tank, and the other side extends upward to the contact surface with the water inlet cover component. This is used to prevent dust and impurities from entering the sterilizer from the gap between the overflow tank and the external components.

[0017] Furthermore, it also includes a filter, which is assembled at the water inlet and used to filter impurities in the water entering the water storage tank; the top of the filter has an outwardly protruding edge structure, which can be mounted on the edge of the water inlet of the water storage tank for suspension and fixation.

[0018] Furthermore, the water tank is equipped with a water inlet cap, the surface of which has a concave area for easy gripping, and the side of the water inlet facing the water inlet has a snap-fit ​​structure that can form a stable connection with the water inlet or external components.

[0019] Furthermore, it also includes a water level sensor, which is installed in the water storage tank to detect the liquid level height in the water storage tank and provide feedback on the liquid level information.

[0020] A second aspect of this utility model is to provide a sterilizer that includes the anti-overflow water filling device for sterilizers described in the above embodiments.

[0021] This invention relates to a sterilizer overflow prevention water filling device. The overflow trough, flow trough, and flow outlet at the water inlet of the storage tank form a complete overflow path. Without relying on electronic components, the device actively intercepts and discharges excess water through mechanical structures alone. This fundamentally prevents liquid from seeping into the sterilizer's core components, preventing aging of these components and corrosion of the circuitry, thus extending the equipment's lifespan. The reversible baffle plate in the middle of the flow trough, combined with elastic elements, dynamically adjusts the flow cross-section according to the water flow rate. At normal flow rates, it ensures smooth drainage, while at high flow rates, it slows down the drainage speed, indirectly reminding the user to control the water filling rate and preventing large amounts of water from impacting downstream and causing splashing.

[0022] Furthermore, the elastic sealing strip around the overflow tank prevents dust and impurities from entering the sterilizer through gaps, ensuring water cleanliness. The filter installed at the water inlet uses a suspended design for easy disassembly and cleaning, and its internal filter layer effectively intercepts water impurities, preventing clogging of the sterilizer's spray components and affecting sterilization efficiency. The concave area of ​​the water storage cap is ergonomically designed for easy opening and closing, while the snap-fit ​​structure ensures it is not easily dislodged during equipment vibration or tilting, achieving reliable sealing of the water inlet. The water level sensor inside the water tank can detect the liquid level in real time and provide feedback, assisting in low water level reminders and abnormal water level warnings. Together with the anti-overflow structure, it forms a dual protection, balancing anti-overflow reliability and ease of use. The overall structure is simple, has a low failure rate, and is suitable for the daily use needs of sterilizers.

[0023] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0025] Figure 1 Cross-sectional view of the anti-overflow water supply device for the sterilizer;

[0026] Figure 2 A three-dimensional view of the sterilizer to which the anti-overflow water supply device for the sterilizer belongs;

[0027] Figure 3 Exploded view of the anti-overflow water supply device for a sterilizer;

[0028] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0029] Figure 5 This is a schematic diagram of a water storage tank;

[0030] Figure 6 A schematic diagram of the bottom of the sterilizer to which the anti-overflow water filling device for the sterilizer belongs;

[0031] Figure 7 A schematic diagram of the structure of the baffle plate and the limiting protrusion at the water flow channel of the water storage tank;

[0032] Figure 8 A diagram illustrating the fit between the baffle plate and the limiting protrusion at the water flow channel. Figure 1 ;

[0033] Figure 9 A diagram illustrating the fit between the baffle plate and the limiting protrusion at the water flow channel. Figure 2 .

[0034] Figure label:

[0035] Sterilizer 100; Water tank 1; Water inlet 11; Overflow trough 12; Flow trough 13; Flow outlet 14; Water baffle 131; Elastic element 132; Limiting protrusion 133; Flow guide 1310; Connecting shaft 134; Filter 2; Edge structure 21; Water storage cover 3; Recessed area 31; Snap-fit ​​structure 32; Water level sensor 4; Water quality sensor 5. Detailed Implementation

[0036] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0037] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0038] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0039] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0041] In the specification and claims of this utility model, the terms "first" and "second" may explicitly or implicitly include one or more of those features. In the description of this utility model, unless otherwise stated, "multiple" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0042] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and other terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] The anti-overflow water filling device for a sterilizer according to an embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0045] The overflow prevention water filling device for sterilizer 100 disclosed in this utility model aims to solve the technical problem of excessive water seeping into the core components inside sterilizer 100 due to improper operation during manual water filling. By combining mechanical structure and auxiliary functions, it achieves a reliable overflow prevention effect and improves ease of use.

[0046] like Figures 1 to 3 As shown, the basic structure of the device includes a water storage tank 1, which serves as a storage medium for sterilization water. Its capacity is designed according to the model of the sterilizer 100 and the requirements of a single sterilization cycle, ensuring sufficient water supply during the sterilization process. For example... Figure 5 , Figure 6As shown, the top of the water storage tank 1 is equipped with a water inlet 11 for injecting water into the tank, typically distilled or purified water that meets sterilization requirements. An overflow prevention structure is installed at the water inlet 11, consisting of an overflow trough 12, a flow trough 13, and a flow outlet 14. These three parts are connected sequentially to form a complete overflow path, jointly achieving the function of intercepting and discharging excess water. The overflow trough 12 surrounds the edge of the water inlet 11, and its body has a concave cross-section designed to hold water; it can be U-shaped, U-shaped, or any other cross-sectional shape suitable for water storage. The bottom of the trough is lower than the upper edge of the water inlet 11. When the water injected through the water inlet 11 exceeds the rated water level of the water storage tank 1, the excess water naturally overflows into the overflow trough 12 under gravity, achieving the first stage of interception of excess water. The water trough 13 extends along the side wall of the water storage tank 1, with one end connected to the bottom of the overflow trough 12 and the other end extending downwards to the bottom of the sterilizer 100, forming a drainage channel with a certain slope. This allows excess water collected by the overflow trough 12 to flow naturally along the slope of the water trough 13 under its own weight, preventing siltation around the water storage tank 1. The water outlet 14 is located at the end of the water trough 13, penetrating the shell of the sterilizer 100 and connecting to an external drainage path. The external drainage path can be a drain pipe or a wastewater collection box, etc., ultimately discharging the excess water guided by the water trough 13 to the outside of the sterilizer 100. Through the synergistic effect of the three-stage structure of the overflow trough 12 interception, the flow trough 13 diversion, and the discharge trough 14, the excessive water can be actively discharged without relying on electronic components such as sensors, using only mechanical structures. This fundamentally prevents water from seeping into the core components such as circuits and heating components inside the sterilizer 100, effectively reducing the risk of equipment failures such as short circuits and corrosion. At the same time, this purely mechanical structure design also simplifies the overall structure of the device and reduces the failure rate.

[0047] Based on the aforementioned basic structure, in order to further optimize the overflow control effect, a reversible baffle plate 131 is installed in the middle section of the water tank 13. For example... Figure 7 As shown, the baffle plate 131 is a plate-shaped structure, which can be a rectangular thin plate or a trapezoidal thin plate, or other suitable shapes. One edge of the baffle plate is rotatably connected to the bottom of the water channel 13 via a connecting shaft 134, while the other edge is a free end. An elastic element 132 is fitted onto the connecting shaft 134, such as... Figure 8 As shown, in its natural state, the elastic element 132 allows the free end of the baffle 131 to be close to the bottom of the water channel 13, forming a small angle between them. At this time, the baffle 131 has a small obstruction effect on the water flow, allowing water of normal flow rate to flow smoothly through the water channel 13. Figure 9As shown, when the water flow velocity in the water tank 13 exceeds a preset threshold, i.e., the water filling speed is too fast or the water level in the water storage tank 1 rises abnormally, causing the water flow velocity to increase, the impact force of the water flow on the baffle plate 131 also increases. When this impact force overcomes the elastic force of the elastic element 132, it will push the baffle plate 131 to rotate upward around the connecting shaft 134, increasing the angle between the baffle plate 131 and the bottom of the water tank 13. The surface of the baffle plate 131 extends more into the internal space of the water tank 13, thereby reducing the effective flow cross section of the water tank 13. Through this dynamic adjustment function of the baffle plate 131, the smoothness of drainage can be ensured at normal flow rates, while at high flow rates, i.e., when the risk of excessive water filling is high, the flow cross section can be actively reduced to slow down the drainage speed. This not only indirectly reminds the user to reduce the water filling speed, but also avoids the problem of splashing caused by a large amount of water impacting the downstream drainage path at any moment.

[0048] The elastic element 132 is preferably a torsion spring, which is sleeved on the connecting shaft 134. One end of the torsion spring is fixed to the bottom of the water trough 13 by means of a slot or screw, and the other end is fixed to the bottom surface of the baffle plate 131. The spring force can be adjusted according to the design flow rate of the sterilizer 100 to ensure that the baffle plate 131 is only triggered to flip when the water flow velocity exceeds the safety threshold. The width of the baffle plate 131 is adapted to the inner width of the water trough 13, and the difference between the two is usually no more than 2mm. This can prevent a large amount of water from leaking out from the gap between the baffle plate 131 and the side wall of the water trough 13. The length of the baffle plate 131 is designed to be sufficient to significantly block the water flow when it flips upward. For example, the length can be designed to be more than two-thirds of the depth of the water trough 13 to ensure that the flow channel can be effectively narrowed at high flow rates. The elastic stability of the torsion spring ensures that the flipping response of the baffle plate 131 remains consistent, while the size compatibility between the baffle plate 131 and the water channel 13 ensures that the baffle plate 131 has a more reliable effect on regulating the water flow, avoiding functional failure caused by excessive gap or insufficient length.

[0049] like Figure 8 , Figure 9As shown, to ensure the normal operation of the baffle plate 131, a limiting protrusion 133 is provided on the side wall of the water channel 13 corresponding to the flipping path of the baffle plate 131. When the baffle plate 131 flips upward to a preset angle, the limiting protrusion 133 abuts against the top surface of the baffle plate 131, thereby limiting the baffle plate 131 from continuing to flip, and preventing the baffle plate 131 from getting stuck due to an excessive flipping angle or the elastic element 132 from becoming excessively deformed and failing. At the same time, an upwardly protruding guide portion 1310 is provided on the side of the baffle plate 131 facing the direction of incoming water. The guide portion 1310 can be an arc-shaped rib or a triangular rib, etc., which can guide the water flow to the middle area of ​​the baffle plate 131, concentrate the impact force of the water flow, and make the baffle plate 131 more sensitive to changes in flow velocity. The limiting protrusion 133 ensures the safety of the movement of the baffle 131, while the guide part 1310 enhances the timeliness of the flipping response. The two work together to further improve the working stability and reliability of the baffle 131.

[0050] To proactively alert users to excessive water addition, a vibration warning mechanism can be added to the baffle plate 131. This mechanism involves a detection component (not shown), which can be a vibration sensor, for example, attached to the outer wall of the water tank 13, or a liquid level detection device connected to the water tank 13. Its function is to sense the movement state of the baffle plate 131. When the baffle plate 131 flips upward due to high flow velocity, its free end will contact the side wall or limiting protrusion 133 of the water tank 13, thereby generating periodic vibration. This vibration signal is transmitted to the detection component, triggering the detection component to change the signal transmission frequency, for example, from a stable signal in normal state to a pulse signal, forming a warning signal that is distinct from the normal drainage state. This warning signal can be transmitted to the control system of the sterilizer 100, and the control system will then remind the user that excessive water has been added by means of flashing indicator lights or buzzer alarms. This method of adding electronic warning on the basis of mechanical overflow prevention achieves dual protection of "passive interception + active reminder", further reducing the equipment risk caused by operational errors.

[0051] An elastic sealing strip is provided around the outer periphery of the overflow tank 12. The sealing strip is preferably made of black sponge. The sealing strip is set around the edge of the overflow tank 12, and its cross-section is bent, such as L-shaped. One side of the sealing strip is attached to the outer wall of the overflow tank 12 and can be fixed by adhesive or slotting. The other side extends upward to the contact surface with the water inlet 11 cover component. The water inlet 11 cover component can be a water storage cap 3 or a filter 2, etc., thus forming a sealing barrier. The black sponge sealing strip has both elasticity and dustproof properties. It can prevent external dust and impurities from entering the sterilizer 100 from the gap between the overflow tank 12 and the cover component, avoiding contamination of the water in the water storage tank 1 or affecting the normal operation of the core components. It can also fill the gap with its own elasticity, avoiding wear of components caused by hard contact. It can maintain a good sealing effect even after long-term use, and also enhance the structural sealing of the water inlet 11 area.

[0052] like Figure 3 , Figure 4 As shown, a filter 2 is also installed at the water inlet 11. The top of the filter 2 has an outwardly protruding edge structure 21. This edge structure 21 can be mounted on the edge of the water inlet 11 of the water storage tank 1 to achieve the suspension and fixation of the filter 2. This fixing method does not require additional fasteners and facilitates the disassembly and cleaning of the filter 2. The function of the filter 2 is to filter particulate impurities, such as scale and dust, contained in the water entering the water storage tank 1, so as to prevent these impurities from clogging the spray components of the sterilizer 100 or affecting the sterilization effect, thereby extending the maintenance cycle of the equipment.

[0053] The filter 2 has an internal filter layer, which includes a main support and a filter screen. The main support is preferably made of PP (polypropylene), which has good water resistance and structural stability, and can withstand the impact of water flow for a long time without deformation. At the same time, it has a grid design, which can maintain the shape of the filter layer, reduce the overall weight of the filter 2, disperse the impact of water flow, and prevent the filter screen from becoming locally dented after long-term use. The filter screen is preferably a 200-mesh nylon filter screen, which has a regular rectangular filtration area on its surface. It can effectively intercept rust, scale particles and microbial debris in the water, ensuring that water molecules can pass through smoothly. Through physical interception, it deeply purifies the water and improves the cleanliness of sterilization water. Moreover, the nylon material is resistant to aging and easy to clean, which can extend the service life of the filter 2.

[0054] A water storage cap 3 is also fitted at the water inlet 11 of the water storage tank 1. The surface of the water storage cap 3 is provided with a concave area 31 for easy gripping. This concave area 31 is ergonomically designed, and its curvature matches the natural curvature of the fingers, making it convenient for users to open and close the water storage cap 3. A snap-fit ​​structure 32 is provided on the side of the water storage cap 3 facing the water inlet 11. The snap-fit ​​structure is preferably a protrusion, preferably three protrusions, evenly distributed along the central circumference of the water storage cap 3, corresponding to the three arc-shaped grooves on the top edge of the filter 2. The protrusions and the arc-shaped grooves form an interference fit, and a stable snap-fit ​​can be achieved without additional fasteners when closed. When the water storage cap 3 is closed, the protrusions are embedded in the grooves to form a three-point positioning, so that the water storage cap 3, the filter 2 and the water storage tank 1 form a stable whole. This can prevent the water storage cap 3 from loosening and falling off when the sterilizer 100 vibrates during operation, and also avoid sealing failure caused by the displacement of the covering parts. At the same time, the user only needs to apply a little force to open it, which takes into account both stability and ease of operation. When not filled with water, the water storage cover 3 can seal the water inlet 11 to prevent dust and foreign objects from falling into the water storage tank 1.

[0055] Inside the water storage tank 1, a water level sensor 4 is installed. The water level sensor 4 is located at the bottom of the water storage tank 1, near the circuit board of the sterilizer 100, and includes a plastic block and a guide rod. A magnet is embedded inside the plastic block, allowing it to float and rise with the liquid level in the water storage tank 1. Multiple reed switches are arranged along the length of the guide rod. These reed switches detect changes in the position of the magnet inside the plastic block to accurately determine the liquid level in the water storage tank 1 and feed this information back to the control system of the sterilizer 100. When the liquid level is lower than a preset value, the control system alerts the user to add water promptly via an indicator light or an audible warning to prevent water shortage during the sterilization process. When the liquid level rises abnormally, it also assists in triggering an early warning system, complementing the anti-overflow structure and further enhancing the intelligence of the equipment.

[0056] Meanwhile, a water quality sensor 5 is installed at the bottom of the water tank 1 near the sterilization chamber of the sterilizer 100. The core component of the water quality sensor 5 is a metal strip, the top of which is lower than the rated water level line of the water tank 1, ensuring that the metal strip is always in contact with the water when the water level is up to standard. When the water level in the water tank 1 exceeds the metal strip, the metal strip forms a closed circuit with the water. The water quality sensor 5 indirectly reflects the conductivity of the water by applying an AC voltage to the circuit and detecting changes in resistance. If the impurity content in the water is too high, the resistance value will drop significantly. At this time, the water quality sensor 5 transmits this signal to the control panel of the sterilizer 100. The panel reminds the user to replace the distilled water by flashing a red indicator light or sounding a buzzer, thus preventing inferior water from entering the sterilization chamber with the spray system, affecting the sterilization effect or contaminating the instruments to be sterilized.

[0057] Of course, for those skilled in the art, the other structures and working principles of the anti-overflow water filling device for the sterilizer are understandable and achievable, and will not be described in detail in this utility model.

[0058] According to a second aspect of the present invention, a sterilizer is provided, including the sterilizer anti-overflow water filling device in the above embodiments. Since the anti-overflow water filling device for sterilizers according to the embodiments of this utility model has the above-mentioned technical effects, the sterilizer according to the embodiments of this utility model should also have the corresponding technical effects. That is, by adopting the anti-overflow water filling device, the sterilizer of this utility model can actively intercept and discharge excess water through mechanical structure alone, fundamentally preventing liquid from seeping into the core components inside the sterilizer, preventing aging of the core components and corrosion of the circuit system, and extending the service life of the equipment. By setting a flip-up baffle in the middle of the water tank, the flow cross section can be dynamically adjusted according to the water flow speed. Under normal flow, it ensures smooth drainage, and under high flow, it slows down the drainage speed, indirectly reminding the user to control the water filling speed, while avoiding a large amount of water impacting the downstream and causing splashing. The water level sensor in the water tank can detect the liquid level in real time and provide feedback information, assisting in realizing low water level reminders and abnormal water level warnings. Together with the anti-overflow structure, it forms a double protection, taking into account both the reliability of anti-overflow and ease of use. The overall structure is simple, the failure rate is low, and it is suitable for the daily use needs of sterilizers.

[0059] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A sterilizer anti-overflow water supply device, characterized in that, Includes a water storage tank (1); the top of the water storage tank (1) is provided with a water inlet (11), and the water inlet (11) is provided with an overflow prevention structure, the overflow prevention structure including: An overflow trough (12) is provided around the edge of the water inlet (11). Its trough body has a concave cross section for accommodating water. The bottom of the trough is lower than the upper edge of the water inlet (11) and is used to receive excess water exceeding the rated water level of the water storage tank (1). A water trough (13) extends along the side wall of the water storage tank (1), with one end connected to the bottom of the overflow trough (12) and the other end extending downwards to the bottom of the sterilizer (100), forming a sloping drainage channel. The water outlet (14) is located at the end of the water tank (13) and penetrates the shell of the sterilizer (100). It is connected to the external drainage path and is used to discharge the excess water guided by the water tank (13) to the outside of the sterilizer (100). The overflow trough (12), the flow trough (13) and the flow outlet (14) are connected in sequence to form a complete overflow path, so as to avoid excessive water seeping into the core components inside the sterilizer (100).

2. The anti-overflow water supply device for sterilizer according to claim 1, characterized in that, The middle section of the water trough (13) is provided with a reversible baffle plate (131). The baffle plate (131) is a plate-shaped structure. One edge of the baffle plate is rotatably connected to the bottom of the water trough (13) through a connecting shaft (134), and the other edge is a free end. An elastic element (132) is sleeved on the connecting shaft (134). In its natural state, the elastic element (132) causes the free end of the baffle plate (131) to be close to the bottom of the water trough (13), and the two form a small clamp. The angle is set to allow water of normal flow to flow smoothly; when the water flow velocity in the water tank (13) exceeds the preset threshold, the water flow impact force can overcome the elastic force of the elastic element (132) and push the baffle plate (131) to rotate upward around the connecting shaft (134), so that the angle between the baffle plate (131) and the bottom of the water tank (13) increases, and the surface of the baffle plate (131) extends more into the internal space of the water tank (13) to reduce the effective flow cross section of the water tank (13).

3. The anti-overflow water supply device for the sterilizer according to claim 2, characterized in that, The elastic element (132) is a torsion spring. One end of the torsion spring is fixed to the bottom of the water channel (13), and the other end is fixed to the bottom surface of the baffle plate (131). The width of the baffle plate (131) is adapted to the inner width of the water channel (13), and its length is sufficient to form a significant obstruction to the water flow when it flips upward, so as to effectively reduce the flow channel at high flow rates.

4. The anti-overflow water supply device for the sterilizer according to claim 2, characterized in that, The side wall of the water trough (13) is provided with a limiting protrusion (133) corresponding to the flipping path of the baffle plate (131). When the baffle plate (131) flips upward to a preset angle, the limiting protrusion (133) can abut against the top surface of the baffle plate (131) to limit the maximum flipping angle of the baffle plate (131). The baffle plate (131) is provided with an upwardly protruding guide part (1310) on the side facing the direction of incoming water, which is used to concentrate the water flow impact force to enhance the flipping response.

5. The anti-overflow water supply device for sterilizer according to claim 2, characterized in that, The contact vibration between the baffle plate (131) and the side wall or limiting protrusion (133) of the water tank (13) during the flipping process can be transmitted to the detection component, triggering the detection component to change the signal transmission frequency and form an early warning signal that is different from the normal drainage state; the detection component is a vibration sensor or a liquid level detection device connected to the water tank (13).

6. The anti-overflow water supply device for sterilizer according to claim 1, characterized in that, The overflow tank (12) is provided with an elastic sealing strip around its outer periphery. The sealing strip is arranged around the edge of the overflow tank (12) and its cross-section is bent. One side is attached to the outer wall of the overflow tank (12) and the other side extends upward to the contact surface with the water inlet (11) covering component. It is used to prevent dust and impurities from entering the sterilizer (100) from the gap between the overflow tank (12) and the external component.

7. The anti-overflow water supply device for sterilizer according to claim 1, characterized in that, It also includes a filter (2), which is assembled at the water inlet (11) to filter impurities in the water entering the water tank (1); the top of the filter (2) is provided with an outwardly protruding edge structure (21), which can be erected on the edge of the water inlet (11) of the water tank (1) for suspension and fixation.

8. The anti-overflow water supply device for sterilizer according to claim 1, characterized in that, The water tank (1) is equipped with a water inlet (11) and a water cover (3). The surface of the water cover (3) is provided with a concave area (31) for easy gripping. The side of the water cover (3) facing the water inlet (11) is provided with a snap-fit ​​structure (32) which can form a stable connection with the water inlet (11) or external components.

9. The anti-overflow water supply device for sterilizer according to claim 1, characterized in that, It also includes a water level sensor (4), which is installed in the water storage tank (1) to detect the liquid level height in the water storage tank (1) and feed back the liquid level information.

10. A sterilizer, characterized in that, The sterilizer includes the anti-overflow water filling device according to any one of claims 1-9.

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