An ultrasonic cleaning machine

Abstract

This utility model relates to the field of cleaning machine technology and discloses an ultrasonic cleaning machine, including a housing, a pressure cover that fits with the top of the housing, an isolation pocket installed inside the housing, a cleaning tank installed inside the isolation pocket, a circuit board installed inside the housing and located below the isolation pocket, a control panel installed on the housing, and an ultrasonic transducer installed at the bottom of the cleaning tank. The circuit board is electrically connected to the control panel and the ultrasonic transducer respectively. The pressure cover presses down on the first edge of the cleaning tank through a sealing ring, so that the first edge of the cleaning tank is pressed against the second edge of the isolation pocket. The bottom of the isolation pocket is connected to a drain pipe for draining the cleaning liquid flowing into the isolation pocket. The bottom of the housing is provided with a drain hole that connects to the drain pipe. At least one drain groove is opened on the bottom surface of the housing.

Description

Technical Field

[0001] This utility model relates to the field of cleaning machine technology, and in particular to an ultrasonic cleaning machine. Background Technology

[0002] Ultrasonic cleaners, which utilize the ultrasonic cavitation effect to achieve efficient cleaning, are widely used for cleaning small items such as jewelry, eyeglasses, and cosmetic tools. With increasing user demand, large-capacity ultrasonic cleaners are gaining popularity because they can hold more items to be cleaned simultaneously.

[0003] Currently, large-capacity ultrasonic cleaners on the market typically employ a separate design for the cleaning tank and the housing. To prevent cleaning fluid from seeping into the housing during the cleaning process (especially the circuit board area inside the housing), existing technologies generally use a sealing ring at the connection between the cleaning tank and the housing to achieve a primary waterproof seal. Theoretically, this design can prevent cleaning fluid from contacting the circuit board inside the housing, thereby preventing short circuits, component corrosion, and other problems, ensuring normal equipment operation and a good user experience.

[0004] However, the following defects still exist in actual use: On the one hand, the sealing ring may experience decreased elasticity, deformation, or even breakage due to long-term immersion in cleaning fluid, ultrasonic vibration, or aging, causing the cleaning fluid to seep into the casing along the sealing gap; on the other hand, if the user fills the cleaning fluid excessively (exceeding the safe capacity of the cleaning tank), or if ultrasonic vibration causes violent fluctuations in the cleaning fluid, the cleaning fluid may overflow from the top of the cleaning tank and flow into the gap between the casing and the cleaning tank. In both of these scenarios, if the cleaning fluid that seeps into the casing cannot be drained in time, it will flow directly to the bottom of the casing or the circuit board mounting area (the circuit board is usually located at the bottom or side of the casing to reduce costs or simplify the structure), causing short circuits on the circuit board, corrosion of electronic components, and ultimately equipment failure or even scrapping, seriously affecting user experience and product reliability.

[0005] Therefore, given the existing ultrasonic cleaning machines' reliance on a single-layer waterproof structure with sealing rings, which presents a risk of failure and lacks secondary protection, there is an urgent need to design a secondary waterproof structure that can effectively guide the cleaning fluid that has seeped into the casing out when the sealing ring fails or the cleaning fluid overflows, preventing it from contacting the circuit board, thereby improving the waterproof reliability and service life of the equipment. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an ultrasonic cleaner that, when the sealing ring fails, effectively guides the cleaning fluid that has seeped into the machine casing to drain out and prevents it from contacting the circuit board.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An ultrasonic cleaner includes a housing, a pressure cap that fits with the top of the housing, an isolation pocket inside the housing, a cleaning tank inside the isolation pocket, a main circuit board inside the housing and located below the isolation pocket, a control panel on the housing, and an ultrasonic transducer at the bottom of the cleaning tank. The main circuit board is electrically connected to the control panel and the ultrasonic transducer. The pressure cap presses against the first edge of the cleaning tank with a sealing ring, so that the first edge of the cleaning tank is pressed against the second edge of the isolation pocket. The bottom of the isolation pocket is connected to a drain pipe for draining the cleaning fluid flowing into the isolation pocket. The bottom of the housing has a drain hole that connects to the drain pipe. At least one drain groove is formed on the bottom surface of the housing.

[0009] As a further improvement to the above technical solution, the bottom of the isolation pocket is provided with multiple downward-extending mounting posts with threaded holes. The circuit board is engaged with the threaded holes on the mounting posts by screws, thereby suspending the circuit body and separating it from the inner bottom surface of the casing.

[0010] As a further improvement to the above technical solution, the bottom of the isolation bag is provided with a wiring hole, and the inner bottom surface of the isolation bag is provided with a waterproof cover covering the wiring hole and a waterproof rim located around the ultrasonic transducer. The waterproof cover and the waterproof rim are connected to form a wiring opening.

[0011] As a further improvement to the above technical solution, the bottom of the isolation bag is provided with multiple pins, and the inner bottom surface of the housing is provided with positioning cylinders that correspond one-to-one with the pins and cooperate with each other.

[0012] As a further improvement to the above technical solution, the edge of the drain hole protrudes upward to form a water-proof pipe that cooperates with the drain pipe.

[0013] As a further improvement to the above technical solution, a reinforcing rib is provided at the connection between the pocket body and the second overlapping edge of the isolation pocket.

[0014] As a further improvement to the above technical solution, the second edge of the isolation pocket is provided with several small overflow holes that communicate with the inside of the housing.

[0015] As a further improvement to the above technical solution, multiple fixing lugs are arranged on the edge of the second overlapping side of the isolation pocket, and the fixing lugs are connected to the housing screws.

[0016] The beneficial effects of this utility model are as follows: The ultrasonic cleaner provided by this utility model provides double waterproof protection. It not only seals the gap between the sealing cleaning tank and the machine casing with a sealing ring to prevent liquid leakage during normal cleaning, but also uses an isolation pocket to catch the leaked liquid to form a secondary protection, preventing the liquid from flowing directly into the machine casing after the primary seal fails. With the help of the drain pipe, the liquid is actively discharged from the machine casing, which significantly reduces the risk of short circuits and corrosion of the circuit board caused by liquid erosion. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the ultrasonic cleaner provided by this utility model.

[0018] Figure 2 This is a schematic diagram of the bottom structure of the ultrasonic cleaner provided by this utility model.

[0019] Figure 3 Three-dimensional isolation bag Figure 1 .

[0020] Figure 4 Three-dimensional isolation bag Figure 2 .

[0021] Figure 5 This is a 3D view of an ultrasonic cleaner.

[0022] Explanation of main component symbols: 11-House, 12-Clip, 13-Drain groove, 14-Drain hole, 15-Positioning insert, 17-Waterproof pipe, 2-Isolation pocket, 21-Second overlap, 22-Drain pipe, 23-Cable hole, 24-Waterproof cover, 25-Waterproof edging, 26-Cable port, 27-Pin, 28-Reinforcing rib, 29-Overflow hole, 201-Fixing lug, 202-Mounting post, 3-Cleaning groove, 31-First overlap, 4-Circuit main board, 5-Control panel, 6-House cover, 7-Sealing ring. Detailed Implementation

[0023] This utility model provides an ultrasonic cleaning machine. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit the scope of protection of this utility model.

[0024] Please see Figures 1 to 5This utility model provides an ultrasonic cleaner, including a housing 11, a pressure cover 12 that fits with the top of the housing 11, an isolation pocket 2 installed inside the housing 11, a cleaning tank 3 installed inside the isolation pocket 2, a circuit board 4 installed inside the housing 11 and located below the isolation pocket 2, a control panel 5 installed on the housing 11, and an ultrasonic transducer (not shown in the figure) installed at the bottom of the cleaning tank 3. The circuit board 4 is electrically connected to the control panel 5 and the ultrasonic transducer respectively. The pressure cover 12 presses the first overlap 31 of the cleaning tank 3 with a sealing ring 7, so that the first overlap 31 of the cleaning tank 3 is pressed against the second overlap 21 of the isolation pocket 2. The bottom of the isolation pocket 2 is connected to a drain pipe 22 for draining the cleaning liquid flowing into the isolation pocket 2. The bottom of the housing 11 is provided with a drain hole 14 that connects to the drain pipe 22. At least one drain groove 13 is opened on the bottom surface of the housing 11.

[0025] During cleaning, the user places the items to be cleaned into the cleaning tank 3 and injects an appropriate amount of cleaning fluid. The pressure cap 12 is then placed on top of the housing 11, and the sealing ring 7 presses the first overlap 31 of the cleaning tank 3 tightly against the second overlap 21 of the isolation bag 2, forming a primary seal. At this time, the ultrasonic transducer generates high-frequency vibrations under the control of the main circuit board 4, achieving cleaning of the items through the cavitation effect of the cleaning fluid. Due to the sealing effect of the sealing ring 7, the cleaning fluid is confined within the cleaning tank 3 and will not seep into the gap between the isolation bag 2 and the housing 11.

[0026] If the primary seal fails due to aging of the sealing ring 7, ultrasonic vibration impact, or excessive cleaning fluid injected by the user, or violent fluctuations in the cleaning fluid caused by ultrasonic vibration, the cleaning fluid may seep into the interior of the isolation pocket 2 through the gap between the cleaning tank 3 and the isolation pocket 2 (i.e., the contact surface between the first overlap 31 and the second overlap 21). In this case, the isolation pocket 2, as a secondary protection structure, can catch the leaked cleaning fluid. Since the bottom of the isolation pocket 2 is connected to the drain pipe 22, the caught cleaning fluid will converge along the inner wall of the isolation pocket 2 to the bottom and be discharged through the drain pipe 22, eventually exiting the housing 11 through the drain hole 14 at the bottom of the housing 11. Even if a very small amount of cleaning fluid still leaks into the bottom of the housing 11 through the gap between the isolation pocket 2 and the housing 11, the drain groove 13 opened on the bottom surface of the housing 11 can guide the liquid along the groove to the drain hole 14 or the edge of the housing 11, preventing the liquid from accumulating at the bottom of the housing 11 and flowing into the circuit board 4 mounting area. Therefore, through the above-mentioned layered protection and drainage design, the leakage of cleaning fluid is effectively prevented from contacting the circuit board 4, ensuring the safety of the equipment circuit.

[0027] The ultrasonic cleaner provided by this utility model offers double waterproof protection. It not only seals the gap between the sealing cleaning tank 3 and the housing 11 with the sealing ring 7 to prevent liquid leakage during normal cleaning, but also uses the isolation pocket 2 to collect the leaked liquid to form secondary protection, preventing the liquid from flowing directly into the housing 11 after the primary seal fails. In conjunction with the drain pipe 22, the liquid is actively discharged from the housing 11, significantly reducing the risk of short circuit and corrosion of the circuit board 4 due to liquid erosion.

[0028] In traditional designs, the main circuit board 4 is often directly attached to the inner bottom surface of the casing 11. If cleaning fluid seeps into the casing 11, the liquid easily accumulates at the bottom of the casing 11 and directly soaks the main circuit board, leading to short circuits or component corrosion. To solve this technical problem, the bottom of the isolation pocket 2 is provided with multiple downward-extending mounting posts 202 with threaded holes. The main circuit board 4 is engaged with the threaded holes on the mounting posts 202 by screws, thereby suspending the main circuit body and separating it from the inner bottom surface of the casing 11. By suspending the main circuit board with the mounting posts 202, a clear physical separation is formed between it and the inner bottom surface of the casing 11 (i.e., there is an overhead space between the main circuit board 4 and the inner bottom surface of the casing 11). Even if there is a small amount of liquid accumulation at the bottom of the casing 11 (such as liquid that has not been drained in time through the drain trough 13), the liquid will only accumulate on the bottom surface and cannot contact the suspended main circuit board. From a spatial layout perspective, the contact path between the liquid and the circuit is completely blocked, greatly improving circuit safety.

[0029] It is understandable that the mounting post 202 and the isolation pocket 2 are an integrated structure. As the core load-bearing component for secondary waterproofing, the isolation pocket 2 is usually stronger than the bottom surface of the housing 11. The main board is fixed to the threaded hole of the mounting post 202 by screws. The rigidity of the isolation pocket 2 can provide more stable support for the circuit main board 4, effectively resisting ultrasonic vibration and impact during equipment movement, and preventing the circuit main board 4 from connection failure or component detachment due to vibration.

[0030] Since the circuit board 4 of the ultrasonic cleaner needs to be connected to the ultrasonic transducer via wires, the bottom of the isolation pocket 2 has a wiring hole 23 for the wires to pass through. However, in traditional designs, if the wiring hole 23 is not protected, leaked cleaning fluid may flow into the area below the isolation pocket 2 (i.e., the area of ​​the circuit board 4) along the gap between the wires and the wiring hole 23, leading to a short circuit risk. Therefore, the inner bottom surface of the isolation pocket 2 is provided with a waterproof cover 24 covering the wiring hole 23 and a waterproof perimeter 25 located around the ultrasonic transducer. The waterproof cover 24 directly covers the wiring hole 23, forming a physical barrier to prevent liquid from dripping directly from above or flowing into the wiring hole 23; simultaneously, the waterproof perimeter 25 surrounds the ultrasonic transducer, preventing liquid inside the isolation pocket 2 from contacting the ultrasonic transducer and causing damage, and also preventing liquid from flowing directly into the area of ​​the wiring hole 23. The waterproof cover 24 is connected to the waterproof edge 25 and forms a wiring port 26, which further restricts the flow path of the liquid, so that the liquid is guided to the drain pipe 22 at the bottom of the isolation pocket 2 for discharge, rather than leaking into the motherboard area through the wiring hole 23.

[0031] As the core load-bearing component of the secondary waterproofing, the installation position of the isolation pocket 2 within the housing 11 directly affects the effectiveness of the primary sealing and secondary drainage. In traditional designs, if the isolation pocket 2 is simply placed or fixed with screws, human error can easily lead to positional deviations during assembly (such as tilting of the isolation pocket 2 or misalignment of the overlap). Therefore, the bottom of the isolation pocket 2 is provided with multiple prongs 27, and the inner bottom surface of the housing 11 is provided with positioning inserts 15 that correspond one-to-one with the prongs 27 and cooperate with each other. During assembly, the isolation pocket 2 can be quickly and accurately positioned and placed flat by inserting the prongs 27 into the positioning inserts 15, ensuring that the overlap of the isolation pocket 2 is aligned with the cleaning tank 3 and that the drain pipe 22 is coaxially connected with the drain hole 14. This avoids sealing failure or poor drainage caused by installation misalignment from the source, ensuring the functional integrity of the secondary waterproofing structure.

[0032] In traditional designs, the connection between the drain pipe 22 and the drain hole 14 of the housing 11 requires high precision. If there are dimensional tolerances between the drain pipe 22 and the drain hole 14 (such as injection molding errors), or if the drain pipe 22 shrinks due to aging after long-term use, tiny gaps can easily form at the connection point. This can cause leaked cleaning fluid to flow back into the housing 11 (especially the circuit board 4 area at the bottom of the housing 11), posing a short circuit risk. In this solution, the edge of the drain hole 14 protrudes upward to form a water-proof pipe 17 that mates with the drain pipe 22. The drain pipe 22 is inserted into the water-proof pipe 17 to form a "pipe-to-pipe" connection structure, significantly improving the sealing performance at the connection point and eliminating the risk of leaked cleaning fluid flowing back into the housing 11. During assembly, the end of the drain pipe 22 only needs to be aligned with the water-proof pipe 17 to quickly connect with the drain hole 14 (without repeated adjustments), significantly improving assembly efficiency.

[0033] The second overlap 21, serving as the sealing area between the isolation pocket 2 and the first overlap 31 of the cleaning tank 3, needs to withstand the pressure of the cap 12 for extended periods. Simultaneously, during ultrasonic cleaning, the high-frequency vibrations generated by the ultrasonic cavitation effect of the cleaning fluid in the cleaning tank 3 are transmitted to the isolation pocket 2, causing periodic stress at the connection between the second overlap 21 and the pocket body. Prolonged pressure or vibration may cause localized deformation of the isolation pocket 2 (such as overlap collapse or warping), increasing the gap between the first overlap 31 and the second overlap 21, reducing the primary sealing effect, and even directly causing cleaning fluid leakage. Therefore, a reinforcing rib 28 is provided at the connection between the pocket body of the isolation pocket 2 and the second overlap 21. The reinforcing rib 28 significantly improves the deformation resistance of this area by increasing the cross-sectional thickness and rigidity of the connection, ensuring that the second overlap 21 always fits tightly with the first overlap 31, guaranteeing the long-term effectiveness of the primary seal.

[0034] When the sealing ring 7 fails due to aging, vibration, or other reasons, the cleaning fluid will seep out and accumulate between the contact surfaces of the first overlap 31 of the cleaning tank 3 and the second overlap 21 of the isolation pocket 2. The accumulated liquid will form a liquid film or droplets at the sealing interface, and the impact of its gravity or ultrasonic vibration will further widen the sealing gap, leading to increased leakage (similar to the "capillary penetration" effect) and accelerating the failure process of the sealing ring 7. To address this, the second overlap 21 of the isolation pocket 2 is provided with several overflow holes that communicate with the inside of the housing 11. The opening of the overflow holes allows the accumulated liquid to drip into the inner bottom surface of the housing 11 in a timely manner, avoiding continuous damage to the sealing interface caused by liquid accumulation, slowing down the aging rate of the sealing ring 7, and extending the effective service life of the primary seal.

[0035] When the ultrasonic cleaner is working, the high-frequency vibration of the ultrasonic transducer is transmitted to the isolation bag 2 through the cleaning tank 3. Long-term vibration may cause the isolation bag 2, which is only fixed by the clamping force of the cover 12, to shift. Multiple fixing lugs 201 are arranged along the edge of the second overlapping edge 21 of the isolation bag 2, and the fixing lugs 201 are screwed to the housing 11. The fixing lugs 201 are directly connected to the housing 11 by screws, forming a rigid constraint between the second overlapping edge 21 at the top of the isolation bag 2 and the housing 11. This upgrades the fixing method of the isolation bag 2 from a single clamping force of the cover 12 to a double fixing method of clamping force of the cover 12 plus edge screw fixing. This design significantly improves the vibration resistance of the isolation bag 2, ensuring that it can maintain a stable relative position with the housing 11 under long-term high-frequency vibration, avoiding problems such as primary seal failure or poor drainage caused by displacement.

[0036] To prevent the cleaning fluid in the cleaning tank 3 from splashing out when the ultrasonic cleaner is working, the ultrasonic cleaner will be equipped with a cover 6 to cover the cleaning tank 3.

[0037] 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", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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.

[0038] 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, 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 utility model according to the specific circumstances.

[0039] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. An ultrasonic cleaning machine characterized by comprising: The device includes a housing, a pressure cap that fits onto the top of the housing, an isolation pocket inside the housing, a cleaning tank inside the isolation pocket, a main circuit board located inside the housing and below the isolation pocket, a control panel on the housing, and an ultrasonic transducer at the bottom of the cleaning tank. The main circuit board is electrically connected to the control panel and the ultrasonic transducer. The pressure cap presses against the first edge of the cleaning tank with a sealing ring, so that the first edge of the cleaning tank is pressed against the second edge of the isolation pocket. The bottom of the isolation pocket is connected to a drain pipe for draining the cleaning fluid flowing into the isolation pocket. The bottom of the housing has a drain hole that connects to the drain pipe. At least one drain groove is formed on the bottom surface of the housing.

2. The ultrasonic cleaning machine according to claim 1, characterized in that The bottom of the isolation pocket is provided with multiple downward-extending mounting posts with threaded holes. The circuit board is connected to the threaded holes on the mounting posts by screws, thereby suspending the circuit body and separating it from the inner bottom surface of the casing.

3. The ultrasonic cleaning machine according to claim 1, wherein The bottom of the isolation bag has a cable routing hole, and the inner bottom surface of the isolation bag is provided with a waterproof cover covering the cable routing hole and a waterproof rim around the ultrasonic transducer. The waterproof cover and the waterproof rim are connected to form a cable routing opening.

4. The ultrasonic cleaning machine according to claim 1, wherein The bottom of the isolation bag is provided with multiple pins, and the inner bottom surface of the housing is provided with positioning cylinders that correspond one-to-one with the pins and cooperate with each other.

5. The ultrasonic cleaner of claim 1, wherein The edge of the drain hole protrudes upward to form a water-proof pipe that cooperates with the drain pipe.

6. The ultrasonic cleaner of claim 1, wherein The connection between the isolation bag body and the second overlap is provided with a reinforcing rib.

7. The ultrasonic cleaner of claim 1, wherein The second edge of the isolation pocket has several small overflow holes that communicate with the inside of the casing.

8. The ultrasonic cleaner of claim 1, wherein Multiple fixing lugs are arranged along the edge of the second overlapping side of the isolation pocket, and the fixing lugs are connected to the housing screws.

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