Water tank structure of ultrasonic cleaning machine

Abstract

The invention relates to the field of ultrasonic cleaning equipment, and discloses a water tank structure of an ultrasonic cleaner, the water tank structure comprises a water tank body, the lower surface of the water tank body protrudes downwards to form a boss, and the boss and the water tank body are integrally formed; the center of the boss coincides with the center of the water tank body. The bottom of the water tank extends downwards to form the boss, positioning of the piezoelectric ceramic piece and optimization of stress of the piezoelectric ceramic piece and the water tank are achieved through the structure of the boss, and the problem that the piezoelectric ceramic piece is prone to cracking due to stress and the like is solved; and meanwhile, by optimizing the shape and depth of the boss and connecting the water tank and the boss through the arc edge, ultrasonic conduction is optimized, the cleaning strength, the strength uniformity and the vibration conduction range of the ultrasonic cleaning machine are improved on the whole, and it is ensured that low-noise efficient cleaning can be achieved under low-power operation of objects.

Description

Technical Field

[0001] This invention relates to the field of ultrasonic cleaning equipment, and in particular to a water tank structure for an ultrasonic cleaning machine. Background Technology

[0002] The main components of an existing ultrasonic cleaner are a plastic shell, a stainless steel water tank that can be separated from the shell, and an ultrasonic piezoelectric ceramic plate that is glued to the bottom of the stainless steel water tank. When the piezoelectric ceramic plate is energized, the electrical energy is converted into vibration energy. The vibration energy is transmitted through the water in the stainless steel water tank and is presented in the form of high-frequency vibration, which can be used to clean items.

[0003] In actual operation, ceramic plates are prone to cracking due to the following reasons: 1. From the perspective of material characteristics, ceramic plates and water tanks are made of different materials, and their coefficients of thermal expansion differ. When heat is generated during vibration, the degree of thermal expansion and contraction is inconsistent, creating mutual pulling or compressive stress at the contact surface. Long-term accumulation will lead to cracks in the ceramic plates. 2. From the perspective of the characteristics of vibration itself, when electrical energy is converted into vibrational energy, the vibration is not unidirectional, but involves both lateral and longitudinal motion. Bidirectional vibration subjectes the ceramic plates to complex forces; and the larger the area of ​​the ceramic plate, the more uneven the force distribution, and the more likely the stress concentration area is to become the breakthrough point for cracking. 3. The power also directly affects the stability of the ceramic plates. The product requires a power of ≥35W. Therefore, if the energy input to the ceramic plates is too high, its vibration amplitude and frequency will exceed its tolerance range, accelerating material fatigue. At the same time, the heat generated by vibration at higher power will also increase accordingly, further aggravating the stress caused by thermal expansion and contraction. Under the dual effect, the probability of ceramic plate cracking will be significantly increased.

[0004] It is evident that existing technologies still need improvement and enhancement. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a water tank structure for an ultrasonic cleaner, which aims to solve the problem that the piezoelectric ceramic sheet glued to the bottom of the water tank is prone to cracking.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An ultrasonic cleaner's water tank structure includes a water tank body, the lower surface of which protrudes downward to form a boss integrally formed with the water tank body; the center of the boss coincides with the center of the water tank body.

[0007] The water tank structure of the ultrasonic cleaning machine, wherein the bottom of the water tank body is rectangular.

[0008] The water tank structure of the ultrasonic cleaner is described above, wherein the boss is elliptical, and the major axis of the ellipse extends along the long side of the water tank body.

[0009] The water tank structure of the ultrasonic cleaning machine, wherein the boss and the water tank body are connected by rounded corners.

[0010] In the water tank structure of the ultrasonic cleaner, the angle R of the rounded corner is 8-10°.

[0011] In the water tank structure of the ultrasonic cleaner, the angle R of the rounded corner is 8°.

[0012] In the water tank structure of the ultrasonic cleaning machine, the depth h from the upper surface of the boss to the lower surface of the water tank body is 0.4 to 0.6 mm.

[0013] In the water tank structure of the ultrasonic cleaning machine, the depth h from the upper surface of the boss to the lower surface of the water tank body is 0.5 mm.

[0014] The water tank structure of the ultrasonic cleaning machine, wherein the thickness of both the water tank body and the boss is 0.5mm.

[0015] The water tank structure of the ultrasonic cleaning machine, wherein both the water tank body and the boss are made of stainless steel.

[0016] Beneficial effects: This invention provides a water tank structure for an ultrasonic cleaner. By extending downwards from the bottom of the water tank to form a boss, the structure of the boss is used to position the piezoelectric ceramic sheet and optimize the stress between the piezoelectric ceramic sheet and the water tank, thus solving the problem that the piezoelectric ceramic sheet is prone to cracking due to stress and other reasons. At the same time, by optimizing the shape and depth of the boss and using a rounded edge to connect the water tank and the boss, the transmission of ultrasonic waves is optimized, thereby improving the overall cleaning intensity, uniformity of force, and vibration transmission range of the ultrasonic cleaner, ensuring that items can be cleaned efficiently with low noise under low power operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the water tank structure of an ultrasonic cleaner.

[0018] Figure 2 This is a cross-sectional view of the water tank structure of an ultrasonic cleaner.

[0019] Figure 3 for Figure 2 Enlarged view of part A in the middle.

[0020] Figure 4 This is a schematic diagram of the structure of sample No. 3 water tank.

[0021] Figure 5 This is a cross-sectional view of sample No. 3.

[0022] Figure 6 for Figure 5 Enlarged view of section B in the middle.

[0023] Figure 7 This is a schematic diagram showing the process and results of the aluminum foil breakdown test for sample No. 1.

[0024] Figure 8 This is a schematic diagram showing the process and results of the aluminum foil breakdown test for sample No. 2.

[0025] Figure 9 This is a schematic diagram of the aluminum foil breakdown test process and results for sample No. 3.

[0026] Figure 10 This is a schematic diagram showing the process and results of the aluminum foil breakdown test for sample No. 4.

[0027] Figure 11 This is a schematic diagram showing the process and results of the aluminum foil breakdown test for sample No. 5.

[0028] Figure 12 This is a schematic diagram showing the process and results of the aluminum foil breakdown test for sample No. 6.

[0029] Figure 13 This is a schematic diagram of the aluminum foil breakdown test process and results for sample No. 7.

[0030] Figure 14 This is a schematic diagram showing the process and results of the aluminum foil breakdown test for sample No. 8.

[0031] Explanation of main component symbols: 1-Water tank body, 2-Boss, 3-Rounded corner edge. Detailed Implementation

[0032] This invention provides a water tank structure for an ultrasonic cleaner. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the scope of protection of the invention.

[0033] Please see Figure 1 and Figure 2 The present invention provides a water tank structure for an ultrasonic cleaner, including a water tank body 1, wherein a boss 2 is integrally formed with the water tank body 1 on the lower surface of the water tank body 1; the center of the boss 2 coincides with the center of the water tank body 1.

[0034] By setting the aforementioned boss 2 at the bottom of the water tank body 1, workers can be provided with a clear physical reference, directly prompting them to glue the piezoelectric ceramic sheet (the commonly used piezoelectric ceramic sheet is circular) to the center of the boss 2, so that the piezoelectric ceramic sheet and the boss 2 are concentrically set, avoiding the misalignment of the force reference caused by the displacement of the piezoelectric ceramic sheet during manual installation, and facilitating stable vibration transmission during the subsequent operation of the ultrasonic cleaner. Furthermore, addressing the issue of piezoelectric ceramic sheet cracking due to stress, the boss 2 can act as a buffer layer for vibration and stress. On one hand, when the water tank body 1 and the piezoelectric ceramic sheet experience thermal expansion and contraction stress due to material differences and vibration-generated heat, the boss 2 can absorb some of the deformation energy, reducing the direct application of tensile or compressive stress to the piezoelectric ceramic sheet. On the other hand, facing the bidirectional stress in the transverse and longitudinal directions during high-frequency vibration of the piezoelectric ceramic sheet, the boss 2 can disperse and concentrate stress, preventing stress from focusing on weak areas of the ceramic sheet. At the same time, its limited installation area can be adapted to the vibration characteristics of the piezoelectric ceramic sheet. Even in high-power applications of ≥35W, it can reduce the impact of uneven stress on a large area of ​​the piezoelectric ceramic sheet, slow down material fatigue, thereby reducing the probability of cracking of the piezoelectric ceramic sheet and improving the operational stability and service life of the ultrasonic cleaner.

[0035] Please see Figure 1 In some embodiments, the bottom of the water tank body 1 is rectangular. The main purpose of this limitation is to optimize the internal space shape, better accommodate items with longer dimensions such as eyeglasses, long and thick jewelry, and makeup brushes, and solve the problem that round or square water tanks cannot completely submerge long items, ensuring full contact with water during the cleaning process and improving cleaning effectiveness. Simultaneously, the design of the piezoelectric ceramic sheet being glued to the center of the protrusion 2 ensures that the high-frequency vibration energy generated by the piezoelectric ceramic sheet can be evenly transmitted to all areas of the rectangular water tank after adhesion, avoiding weak local vibration energy. This satisfies the need for placing long items while maintaining stable cleaning power, allowing different types of items to be cleaned (whether long or small electric toothbrush heads or shaver heads) to receive uniform and effective cleaning within the suitable space.

[0036] Please see Figure 1In this embodiment, the boss 2 is elliptical, with its major axis extending along the long side of the water tank body 1. By defining the boss 2 as elliptical with its major axis extending along the long side of the water tank body 1, combined with its larger area, it can more accurately adapt to the spatial shape and vibration requirements of the rectangular water tank body 1, significantly optimizing the transmission effect of vibration energy. In terms of vibration intensity and range, the larger elliptical boss can form a more stable contact support with the piezoelectric ceramic sheet, allowing the high-frequency vibration energy generated by the piezoelectric ceramic sheet to be more fully transmitted to the boss 2, and then evenly diffused to the rectangular water tank body 1 through the boss 2. Its design with its major axis extending along the long side allows the vibration energy to achieve a wider coverage along the long side of the water tank body 1, compensating for the vibration intensity attenuation problem at both ends of the rectangular water tank body 1 due to its long length. This ensures a more balanced vibration intensity from both ends of the long side to both sides of the short side within the water tank body 1, avoiding the defect of a circular boss where the vibration range is concentrated in the central area and difficult to cover both ends of the long side of the rectangular water tank body 1 (see [link]). Figure 4 In terms of uniformity of force and ripple shape, the symmetrical structure and larger area of ​​the elliptical boss 2 can reduce energy loss during vibration transmission, allowing vibration energy to be converted into ripples more smoothly. The long axis extending along the long side can guide the ripples to form a long strip-shaped diffusion pattern that fits the rectangular water tank body 1. This type of ripple can better fit the shape of long items such as glasses and thick, long jewelry, so that all parts of their surface can be impacted by uniform ripples. This not only ensures the consistency of vibration force but also improves the cleaning effectiveness of key areas of long items, achieving a scientific match between vibration energy transmission, water tank shape, and the characteristics of the items to be cleaned.

[0037] Please see Figure 2 and Figure 3 In this embodiment, the boss 2 and the water tank body 1 are connected by a rounded corner 3. The rounded corner 3 is used to connect the boss 2 and the water tank body 1 primarily to avoid the problem of ultrasonic energy easily concentrating at right-angle positions (see [link]). Figure 5 and Figure 6When ultrasonic waves encounter angular structures like right angles during propagation, they cannot transition smoothly, resulting in significant reflections and superpositions at the inner corners or edges of the right angles. This causes energy to accumulate continuously at these points, creating localized energy levels far exceeding those of other areas. This concentrated ultrasonic wave acts inversely on the piezoelectric ceramic sheet, exacerbating uneven stress and further increasing the risk of cracking. Simultaneously, excessively high localized ultrasonic energy causes severe disruption of water ripples in the corresponding area of ​​the sink, compromising the overall uniformity of cleaning intensity. The rounded corner 3 allows ultrasonic waves to propagate smoothly along the curved surface at the transition area between the boss 2 and the sink body 1, distributing energy evenly throughout the surrounding space. This avoids the energy accumulation problem at right angles and allows vibration energy to diffuse more stably throughout the entire rectangular sink body 1, ensuring consistent ultrasonic intensity and stable water ripple patterns within the cleaning area. This balances the operational stability of the piezoelectric ceramic sheet with the safety and uniformity of item cleaning.

[0038] Please see Figure 3 Specifically, the angle R of the rounded corner 3 is 8-10°. The preferred angle R is 8°. The rounded corner within this range eliminates the energy accumulation problem that can easily occur with right-angle structures. If the angle is too small, the rounded corner transition will be too steep, and local reflections of ultrasonic waves may still occur, making it impossible to completely avoid energy accumulation. If the angle is too large, the rounded corner transition area will be too wide, causing excessive loss of vibration energy in the wide transition area, affecting the effective transmission to the long side of the rectangular water tank. 8°, as the preferred angle, allows the ultrasonic waves to propagate smoothly along the connection between the boss 2 and the water tank body 1 through a gentle arc transition, completely avoiding the risk of energy accumulation. At the same time, it allows the vibration energy to be transmitted to all areas of the water tank with minimal loss, balancing ultrasonic wave transmission efficiency, structural durability, and cleaning uniformity. It is the optimal parameter selection for the design of a rectangular water tank body 1 and an elliptical boss 2.

[0039] Please see Figure 3Specifically, the depth h from the upper surface of the boss 2 to the lower surface of the water tank body 1 is 0.4–0.6 mm. More specifically, the depth h is preferably 0.5 mm. The aforementioned depth range of the boss 2 allows the boss 2 to efficiently receive the high-frequency vibration of the piezoelectric ceramic sheet. This avoids excessive loss of vibration energy during transmission within the boss 2 due to excessive depth, ensuring smooth transmission of vibration energy to the water tank body 1 and diffusion to the long side area. It also prevents the vibration transmission path from being too short and unstable due to insufficient depth of the boss 2, which would affect the uniform diffusion of energy to various areas of the water tank body 1. In addition, the aforementioned depth allows the boss 2 to absorb the stress generated by the thermal expansion and contraction of the water tank body 1 and the piezoelectric ceramic sheet. The preferred depth of 0.5mm perfectly balances the need to reduce vibration loss and optimize stress buffering, allowing vibration energy to be transmitted with minimal loss and effectively mitigating the stress impact caused by material differences, further reducing the risk of cracking of the piezoelectric ceramic sheet. At the same time, it adapts to the overall structural proportions of the elliptical boss 2 and the rectangular water tank body 1, ensuring that the cleaning machine operates efficiently and stably.

[0040] In this embodiment, the thickness of both the water tank body 1 and the boss 2 is 0.5mm. This thickness allows the water tank body 1 and the boss 2 to maintain a stable structural shape during high-frequency vibration. If the thickness is too thin, the material is prone to irregular deformation during vibration, causing additional structural resonance and amplifying operating noise. If the thickness is too thick, it will not only increase the transmission loss of vibration energy within the material, but also reduce cleaning efficiency. The aforementioned thickness ensures that the vibration energy of the piezoelectric ceramic sheet is efficiently transmitted to the water tank body 1 and evenly diffused to all areas (adapting to the needs of a rectangular water tank body 1 for cleaning long items), but also suppresses unnecessary resonance and deformation, further reducing noise generation. At the same time, the consistent thickness of both forms a unified vibration transmission carrier, avoiding reflection and superposition of vibration waves at the connection point due to thickness differences, further reducing noise caused by vibration disorder, and achieving efficient cleaning and low-noise operation.

[0041] In some embodiments, both the sink body 1 and the boss 2 are made of stainless steel. Stainless steel has good rigidity and vibration transmission efficiency, allowing the high-frequency vibration energy generated by the piezoelectric ceramic sheet to be transmitted to the interior of the sink body 1 with low loss. Furthermore, the material itself is not easily deformed during vibration, ensuring that the vibration energy is stably diffused to all areas of the rectangular sink body 1, avoiding vibration attenuation due to excessive elasticity or structural damage due to brittleness. In addition, stainless steel is corrosion-resistant and easy to clean, resisting water stains and detergent residues that may come into contact with the material during cleaning, preventing rust or stain adhesion. It is especially suitable for cleaning items with high cleanliness requirements, such as eyeglasses and dentures. Its robust nature also allows it to withstand minor impacts during daily use, extending the lifespan of the sink.

[0042] Of course, the sink body 1 and the boss 2 can also be made of, for example, titanium alloy. Titanium alloy has a vibration transmission efficiency close to that of stainless steel and is lighter than stainless steel. Its coefficient of thermal expansion is more compatible with piezoelectric ceramic sheets than many metals, which can reduce the stress caused by thermal expansion and contraction and further reduce the risk of ceramic sheet cracking; at the same time, it has extremely strong corrosion resistance and is suitable for long-term contact with various cleaning solutions (such as eyeglass cleaning solution and denture cleaning solution).

[0043] To further illustrate the water tank structure of the ultrasonic cleaner provided by the present invention, the following embodiments and performance tests are provided.

[0044] Test sample name: Ultrasonic cleaner, model GC08, manufactured by Ericlin. Test items: rated power, breakdown performance, noise test Testing standard: GB 4706.1-2005 Test temperature: 23±2℃ Test Method: Different water tank samples (as shown in Table 1) were placed in the GC08 ultrasonic cleaner. The power and noise were measured after stabilization at full water level (Max). A 130×75mm aluminum foil was added to test the breakdown effect over 180 seconds. The test process and results are shown below. Figures 7-14 .

[0045] Table 1 Information Sheet for Water Tank Samples

[0046] Table 2 Power of each water tank sample at the Max water level

[0047] Table 3 Noise levels of each water tank sample at the maximum water level

[0048] Results analysis: Power: As shown in Table 2, the power of the eight samples ranges from 37.4W to 49.0W, all meeting the product's power requirement of ≥35W, but significant differences exist. Sample 1 (elliptical boss, R=8°, depth 0.5mm) has the lowest power at only 37.4W. This is because the elliptical boss extends along the long side of the rectangular water tank, and the optimal depth of 0.5mm allows the vibration energy of the piezoelectric ceramic plate to be efficiently transmitted to the water tank, reducing energy loss during transmission and maintaining stable cleaning power without excessive input power. Sample 4 (circular boss, depth 0.4mm) has the highest power at 49.0W. This is because the circular boss has poor compatibility with the rectangular water tank, and the shallow depth of 0.4mm leads to an unstable vibration transmission path, requiring higher power to compensate for energy loss. Sample 2, without a boss, has a power of 40.5W. Due to the lack of buffering and guidance from the boss, the vibration energy is directly transmitted to the water tank body, resulting in greater loss, and the power requirement is higher than that of Sample 1. Overall, the combination of the elliptical boss and the boss depth of 0.5mm can effectively optimize energy transfer efficiency and reduce power consumption.

[0049] Noise: Sample 1 had the lowest noise level at only 49.2 dB, compared to 51.5 dB for Sample 7 (with a reverse-protruding circular boss). Samples 2-6 and 8 all had noise levels above 52.5 dB. The low noise advantage of Sample 1 stemmed from the synergistic effect of its multiple structures: firstly, the elliptical boss matched the rectangular water tank, reducing the superposition of vibration wave reflections; secondly, the 8° rounded corners prevented the accumulation of ultrasonic waves at right angles, thus avoiding local vibration disturbances; and thirdly, the 0.5 mm boss depth balanced vibration transmission and stress buffering, suppressing structural resonance. In contrast, Sample 2, without a boss, was prone to irregular deformation due to the lack of guidance and buffering for vibration, leading to resonance noise reaching 53.3 dB. Sample 5 (with a wavy circular boss) had a noise level of 53.1 dB; the wavy structure disrupted the uniformity of vibration transmission, exacerbating vibration disturbances and increasing noise. Sample 4, due to its high power input, experienced increased vibration amplitude, resulting in a noise level of 53 dB. It can be seen that the combination of the elliptical boss with 8° rounded corners and 0.5mm boss depth can suppress noise sources such as resonance and vibration disorder from the source, and achieve low-noise operation.

[0050] Penetration effect: From Figure 7-14It can be seen that, under the same circuit board and operating program, sample 1 showed the best aluminum foil penetration effect, sample 7 the worst, and sample 5 relatively poor. This directly reflects the differences in the uniformity and coverage of ultrasonic force among the samples. Sample 1, with its elliptical boss structure, allows the vibration energy to evenly cover both ends of the long side of the rectangular water tank, avoiding the problem of the vibration range being concentrated in the center and the energy being weak at both ends of the long side, as seen in circular bosses (such as samples 3, 4, 5, 7, and 8). At the same time, the 0.5mm boss depth and 8° rounded corners ensure uniform transmission of ultrasonic force, and the aluminum foil can be evenly penetrated within 180 seconds. Sample 2, without a boss, lacks the concentrated guidance of vibration, resulting in dispersed ultrasonic energy and a poorer penetration effect than sample 1. Sample 5, with its wavy boss structure, suffers from uneven vibration transmission and localized energy weakness, resulting in an even worse penetration effect. Sample 7, with its reverse-protruding boss, has the boss direction opposite to the vibration transmission direction, severely hindering energy diffusion and resulting in the worst penetration effect. This indicates that the elliptical protrusions that adapt to the shape of the water tank are key to improving the uniformity of ultrasonic force, expanding the coverage area, and optimizing cleaning performance.

[0051] Based on the above test results, the water tank structure provided by this invention achieves optimal noise control and breakdown effect with the lowest power.

[0052] In summary, regarding the ultrasonic vibration intensity, the present invention utilizes stainless steel for both the tank body and the boss, ensuring a uniform thickness. This not only efficiently supports the high-frequency vibration of the piezoelectric ceramic sheet, reducing energy loss within the material, but also leverages the rigidity of stainless steel to ensure stable vibration transmission, preventing intensity attenuation due to material deformation. Furthermore, the boss depth of 0.4–0.6 mm further optimizes the vibration transmission path, keeping the vibration intensity consistently within a stable range suitable for cleaning needs. In terms of operating noise control, the uniform thickness of the stainless steel structure suppresses irregular deformation and resonance noise during vibration. The rounded corner design (R=8–10°) prevents localized vibration disturbances caused by ultrasonic wave concentration at right angles. The fit between the elliptical boss and the rectangular tank reduces vibration wave reflection and superposition, minimizing noise generation at the source and achieving low-noise operation. Regarding the uniformity of ultrasonic force, the elliptical boss (with its long axis extending along the long side of the sink) combined with the centrally mounted piezoelectric ceramic plate allows vibration energy to diffuse evenly from the center of the boss outwards. This, combined with the uniform conductivity of stainless steel, effectively avoids localized energy concentration or weakness, ensuring consistent ultrasonic force throughout the sink. Whether it's a small electric toothbrush head or a long pair of glasses, everything receives a uniform cleaning force. In terms of the ultrasonic vibration range, the rectangular sink body is designed to accommodate long items. The larger area of ​​the elliptical boss and its extended long axis design allow vibration energy to fully cover the long side of the sink body. Furthermore, the depth of the boss controls vibration loss, ensuring that the ultrasonic vibration range completely covers the entire rectangular sink space, eliminating cleaning blind spots and ensuring that all items to be cleaned are effectively enveloped by ultrasonic energy.

[0053] In the description of this invention, 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," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0054] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0055] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0056] It is understood that those skilled in the art can make equivalent substitutions or changes to the technical solution and inventive concept of the present invention, and all such changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A water tank structure for an ultrasonic cleaner, characterized in that, The system includes a water tank body, the lower surface of which protrudes downward to form a boss integrally formed with the water tank body; the center of the boss coincides with the center of the water tank body.

2. The water tank structure of the ultrasonic cleaner according to claim 1, characterized in that, The bottom of the water tank body is rectangular.

3. The water tank structure of the ultrasonic cleaner according to claim 2, characterized in that, The boss is elliptical, and the major axis of the ellipse extends along the long side of the water tank body.

4. The water tank structure of the ultrasonic cleaner according to claim 1, characterized in that, The boss is connected to the water tank body by a rounded corner.

5. The water tank structure of the ultrasonic cleaner according to claim 4, characterized in that, The angle R of the rounded edge is 8 to 10°.

6. The water tank structure of the ultrasonic cleaner according to claim 5, characterized in that, The angle R of the rounded edge is 8°.

7. The water tank structure of the ultrasonic cleaner according to claim 1, characterized in that, The depth h from the upper surface of the boss to the lower surface of the water tank body is 0.4 to 0.6 mm.

8. The water tank structure of the ultrasonic cleaner according to claim 7, characterized in that, The depth h from the upper surface of the boss to the lower surface of the water tank body is 0.5 mm.

9. The water tank structure of the ultrasonic cleaner according to claim 1, characterized in that, The thickness of both the water tank body and the boss is 0.5mm.

10. The water tank structure of the ultrasonic cleaner according to claim 1, characterized in that, Both the water tank body and the boss are made of stainless steel.

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