A water collection tank for a vacuum cleaner and a water-absorbing vacuum cleaner.

Abstract

This invention discloses a water collection chamber for a vacuum cleaner, relating to the field of vacuum cleaner technology. Existing water-absorbing vacuum cleaners are relatively large, making it difficult to apply the water-absorbing structure to small vacuum cleaners. This invention provides a water collection chamber for a vacuum cleaner, including a suction inlet at the front; a guide port communicating with the suction inlet; an air channel within the water collection chamber, connected to an external negative pressure source through an opening at the rear of the water collection chamber; and an air inlet at the upper part of the air channel, allowing air to enter the air channel from the air inlet; air entering from the suction inlet flows sequentially through: the guide port, the water collection chamber, the air inlet, and the air channel. This invention also provides a water-absorbing vacuum cleaner. This invention achieves water absorption by using a guide port to allow liquid to fall into the lower part of the water collection chamber and guiding gas into the negative pressure source through the air channel.

Description

Technical Field

[0001] This invention relates to the field of vacuum cleaner technology, and more particularly to a water collection tank for handheld or vehicle-mounted vacuum cleaners and a water-absorbing vacuum cleaner. Background Technology

[0002] Traditional vacuum cleaners are typically only suitable for dry cleaning, which mainly collects dry debris such as dust and hair through a dustbin or dust bag.

[0003] However, in real-world use, users often face situations where they need to handle liquid stains, such as spilled water cups, pet urine, or rainwater brought in from outdoors. If a regular vacuum cleaner is used to suck up liquids, the liquid will directly enter the motor, causing short circuits, corrosion, or damage, and in severe cases, rendering the entire machine unusable. Therefore, some vacuum cleaners that can suck up water (i.e., wet and dry vacuum cleaners) have appeared on the market.

[0004] Water-absorbing vacuum cleaners typically achieve waterproofing through methods such as a float valve inside the water tank, a labyrinth or cyclone-type air-liquid separation structure, or disposable water bags. However, these water-absorbing vacuum cleaners generally suffer from a large size. To achieve waterproofing and protect the motor, existing solutions often require a large water tank, a long airflow channel, or multiple separation chambers, resulting in a significant increase in the overall size and weight of the machine.

[0005] Therefore, most of the current water-absorbing vacuum cleaners are large models, either canister or upright, and are mainly suitable for floor cleaning and other similar scenarios. They are difficult to apply to smaller devices that require less size and weight, such as handheld vacuum cleaners or car vacuum cleaners.

[0006] Handheld or car vacuum cleaners typically consist of a handle and a detachable dustbin mounted on the handle. The handle houses the motor, battery, and other components, while the dustbin collects the sucked-in liquid. For ease of one-handed use, both the handle and the dustbin are relatively small. Due to limited internal space, they cannot accommodate complex and bulky waterproof structures, leaving users without effective cleaning tools for spilled beverages, rainwater, and other liquid stains in their cars. Furthermore, handheld or car vacuum cleaners usually do not require sucking up large amounts of liquid. Compared to the integrated dustbin installation method, water collection components such as suction bags are more cumbersome to install and require more space, making them unsuitable for this type of small and portable handheld or car vacuum cleaner.

[0007] In conclusion, how to construct a compact and highly integrated air-liquid separation structure within a limited space, especially in small vacuum cleaners such as handheld and vehicle-mounted models, while ensuring smooth airflow and effectively preventing water from entering the motor's air intake channel, is a technical problem that urgently needs to be solved. Summary of the Invention

[0008] One of the objectives of this invention is to provide a water collection chamber for a vacuum cleaner. By setting a guide port in the water collection chamber, the gas-liquid mixture falls into the lower part of the water collection chamber through the guide port, and air rises from the lower part of the water collection chamber to the upper part and enters the air channel through the air inlet, thereby achieving water absorption.

[0009] One of the objectives of this invention is achieved through the following technical solution: A water collection tank for a vacuum cleaner, wherein an intake port is provided at the front of the water collection tank; The water collection chamber also has a guide port connected to the inlet, which is used to guide the inhaled gas-liquid mixture to the lower part of the water collection chamber; An air channel is provided inside the water collection chamber. The air channel is connected to an external negative pressure source through an opening at the rear of the water collection chamber. An air inlet is provided at the upper part of the air channel so that air can enter the air channel from the air inlet. The air entering from the intake port flows sequentially through: the guide port, the lower part of the water collection chamber, the air inlet, and the air passage.

[0010] By limiting the air flow sequentially through the guide port, the lower part and upper part of the water collection chamber, the air inlet and the air channel, the water naturally falls into the lower part of the water collection chamber by gravity, while the air goes around to the upper part and then enters the air channel, the gas-liquid mixture is separated, and water is prevented from directly entering the air channel. The structure is simple and compact and is suitable for miniaturized water collection chambers.

[0011] A periphery-closed guide tube is formed between the guide port and the suction port. This guide tube guides the gas-liquid mixture to fall vertically or obliquely from the guide port into the lower part of the water collection tank. The periphery-closed guide tube between the guide port and the suction port concentrates and guides the gas-liquid mixture to fall into the lower part of the water collection tank along a downward trajectory, preventing water from splashing or dispersing during flow. Simultaneously, the closed structure prevents water from entering the air passage.

[0012] Two side plates extend rearward from the rear wall of the guide pipe, with a tubular air channel between the two side plates. A reinforcing rib is provided on each side of the air channel wall, and the reinforcing rib is connected to the side plate. Through holes are provided between the reinforcing rib and the rear end of the guide pipe and / or between the reinforcing rib and the inner rear wall of the water collection chamber to allow airflow. The side plates, reinforcing ribs, and through holes enhance the strength of the air channel and the overall structure, preventing deformation under negative pressure. Furthermore, the through holes provide an airflow path, allowing air from the upper part of the water collection chamber to smoothly enter the air channel, ensuring stable airflow.

[0013] To improve waterproof reliability, a hollow water-blocking cover is installed inside the water collection chamber. The air inlet is covered by the water-blocking cover and communicates with the internal channel of the water-blocking cover. Micro-holes are opened on the water-blocking cover to allow air to enter. The bottom of the water-blocking cover is connected to the pipe wall of the air channel, and the top of the water-blocking cover abuts against the inner wall of the upper part of the water collection chamber.

[0014] The water shield is connected to the housing of the water collection chamber only at its top; the sides and bottom of the water shield do not contact the inner wall of the water collection chamber, thus creating an airflow space. The micropores are located on the top of the water shield near the intake port. The water shield's connection to the housing only at its top, with airflow spaces formed on the sides and bottom, and the micropores located on the top of the side near the intake port, avoids water splashing from behind, enhancing the splash-proof effect.

[0015] The water-blocking cover is fitted with a sealing sleeve, the top of which is flush with the inner top wall of the water collection tank. This prevents water from flowing in through the gap between the water-blocking cover and the inner wall of the water collection tank.

[0016] The top inner wall of the water collection tank is provided with a raised strip, and the top of the water baffle abuts against the raised strip. The raised strip increases the contact area and pressure, improving the sealing performance. At the same time, the raised strip can serve as an assembly positioning structure, facilitating installation and also improving the strength of the water collection tank.

[0017] The bottom of the water collection tank is provided with a drain outlet, and an anti-detachment sealing plug is provided at the drain outlet for removing the anti-detachment sealing plug to drain the water in the water collection tank when draining water. One end of the anti-detachment sealing plug is inserted into a fixing hole at the bottom of the water collection tank and sealed to the fixing hole by an interference fit; the other end of the anti-detachment sealing plug is removably inserted into the drain outlet. When the other end of the anti-detachment sealing plug is pulled out from the drain outlet, the anti-detachment sealing plug is held on the water collection tank by one end to prevent it from falling off.

[0018] The second objective of this invention is to provide a vacuum cleaner that can absorb water, by replacing the dust collection chamber with a water collection chamber, so that the vacuum cleaner can be used for both dry and wet applications.

[0019] The second objective of this invention is achieved by the following technical solution: A water-absorbing vacuum cleaner includes: a grip portion, wherein a motor is installed in the grip portion; And the aforementioned water collection chamber; the water collection chamber is detachably mounted on the grip, and the rear opening of the water collection chamber is connected to the air inlet of the motor.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention uses gravity to guide the gas-liquid mixture into the lower part of the water collection chamber through the guide port. By setting up an air channel and an air inlet above the air channel, air can bypass and enter the air channel from the upper part of the water collection chamber, thus achieving water absorption and gas-liquid separation. It eliminates the need for a large gas-liquid separation chamber or a long airflow pipe. The overall structure is compact and small in size, and can be easily installed in the limited installation space of handheld vacuum cleaners or car vacuum cleaners.

[0021] By clearly defining the airflow sequence (inlet, guide port, lower part of water collection chamber, upper part of water collection chamber, air inlet, air channel) and the path of water falling directly into the lower part of the water collection chamber through the guide port, effective gas-liquid separation is achieved. This path design is simple and efficient, requiring no complex centrifugal or cyclone structure, and achieving the waterproof effect required for handheld vacuum cleaners within a compact space.

[0022] Furthermore, this invention enhances waterproofing through multiple waterproofing designs: the periphery of the guide pipe is sealed, ensuring water falls directly into the lower part of the water collection chamber, reducing water spray; the air inlet is located at the top of the water baffle, and the water baffle is only connected to the shell at the top, with the sides and bottom suspended, forcing air to bypass the side or upper space of the water collection chamber before entering through micropores, extending the airflow path, and using inertia to cause residual water droplets to adhere to the outer wall of the water baffle; the rear side of the water baffle is sealed, with micropores only at the top front side, so even if the vacuum cleaner shakes, tilts, or experiences a short period of heavy water suction causing water to splash onto the upper inner wall of the water collection chamber, water cannot directly enter the air passage; the sealing sleeve and protrusions further enhance the seal between the water baffle and the inner wall of the water collection chamber. These multiple protections ensure the safe operation of the motor under water suction conditions.

[0023] Furthermore, a drain spout with a detachable sealing plug is located at the bottom of the water collection chamber. During normal use, the plug prevents leakage; when drainage is needed, simply pull out the plug to empty the water – a convenient operation. The detachable sealing plug is fixed to the bottom of the water collection chamber at one end, preventing it from falling off and avoiding the loss of small parts. Additionally, the entire water collection chamber is detachably mounted on the vacuum cleaner's handle, facilitating user disassembly and rinsing.

[0024] Furthermore, by setting a rearward-extending side plate, reinforcing ribs connecting the side plate to the air channel wall, and through holes at both ends of the reinforcing ribs, the rigidity of the internal structure of the water collection chamber is enhanced to prevent deformation under negative pressure, while ensuring that air can smoothly enter the air channel from the top of the water collection chamber through micropores, resulting in low airflow resistance and not affecting the suction power of the vacuum cleaner. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the vacuum cleaner of the present invention; Figure 2 This is a schematic diagram of the water collection tank in Example 1; Figure 3 This is an exploded view of the water collection tank in Example 1. Figure 4 This is a second-view explosion diagram of the water collection tank in Embodiment 1; Figure 5 This is a three-explosion diagram of the water collection tank from the perspective of Example 1; Figure 6 This is a schematic diagram of the interior of the water collection tank in Example 1.

[0026] In the diagram: 1. Water collection tank; 10. Inlet; 11. Flow guide; 110. Flow guide pipe; 12. Air passage; 121. Water baffle; 1211. Micropore; 1212. Sealing sleeve; 13. Side plate; 14. Reinforcing rib; 140. Through hole; 15. Raised strip; 16. Outlet; 160. Fixing hole; 161. Anti-detachment sealing plug; 17. Mounting base; 2. Grip part. Detailed Implementation The present invention will now be described in more detail with reference to the accompanying drawings. It should be noted that the following description of the present invention with reference to the accompanying drawings is merely illustrative and not restrictive. Various different embodiments can be combined with each other to form other embodiments not shown in the following description.

[0027] Example 1 This embodiment provides a water collection chamber for a vacuum cleaner. By setting a peripherally enclosed guide pipe between the suction inlet and the guide outlet, water falls directly into the lower part of the water collection chamber, while air rises from the lower part of the water collection chamber to the upper part and enters the air channel through the air inlet on the water baffle. This achieves gas-liquid separation and prevents water from entering the motor. The overall structure is compact and suitable for handheld and vehicle vacuum cleaners.

[0028] It should be noted that, please refer to Figure 1 and Figure 2 As shown, when the water collection chamber 1 is installed on the vacuum cleaner and in its normal operating posture, i.e., when the vacuum cleaner is placed horizontally or at its usual tilt angle when held by hand, its internal space is divided into an upper region and a lower region along the direction of gravity. The "lower part of the water collection chamber 1" described in this embodiment refers to the space area from the bottom inner wall of the water collection chamber 1 upwards to the outlet end face of the guide port 11. The boundaries of this region are: the bottom is bounded by the bottom wall of the water collection chamber 1, the top is bounded by the horizontal plane where the lowest point of the guide port 11 outlet is located, and the surrounding area is bounded by the side walls of the water collection chamber 1. Within this space, water falling from the guide port accumulates due to gravity, forming a water collection area. When the water level in the water collection chamber 1 rises above this horizontal plane, water will enter the upper region, but during normal water suction, the water level is usually kept below the outlet of the guide port 11. Those skilled in the art will understand that the specific height of the "lower part" can be adaptively adjusted according to the overall size of the water collection chamber 1 and the position of the guide port 11, as long as it is ensured that water falls into this region first under the action of gravity.

[0029] Furthermore, in this embodiment, the air channel 12 is a path for directional airflow enclosed by a solid structure. Specifically, the air channel 12 is cylindrical with a closed periphery and a hollow flow path inside. The air channel 12 extends longitudinally (i.e., from front to back) along the water collection chamber 1, with its front end communicating with the hollow cavity of the water baffle 121 and its rear end opening sealingly connected to the rear opening of the water collection chamber 1. An air inlet is provided at the top of the air channel 12, which communicates with a micro-hole 1211 at the top of the water baffle 121 to allow air from the top of the water collection chamber 1 to enter. The air channel 12 maintains its shape stability through its tube wall, ensuring that it does not collapse or deform under negative pressure. Those skilled in the art will understand that the air channel can also adopt other cross-sectional shapes, such as rectangular, elliptical, or irregular shapes, as long as it can form a space for air to pass through and withstand negative pressure.

[0030] Please refer to Figures 2-6 The water collection chamber 1 shown has an intake port 10 at its front. The water collection chamber 1 also has a guide port 11 connected to the intake port 10, which is used to guide the intake gas-liquid mixture to the lower part of the water collection chamber 1. An air channel 12 is provided inside the water collection chamber 1. The air channel 12 is connected to an external negative pressure source through the rear opening of the water collection chamber 1. An air inlet is provided at the upper part of the air channel 12, so that air can enter the air channel 12 from the air inlet. The air entering from the intake port 10 flows sequentially through: the guide port 11, the lower part of the water collection chamber 1, the air inlet, and the air channel 12.

[0031] The suction port 10 is typically an opening at the front end of the water collection chamber 1, used to draw in external gas-liquid mixtures under negative pressure. The shape of the suction port 10 can be selected according to actual application requirements. In this embodiment, it is shown as an elongated shape in the accompanying drawings, but those skilled in the art will readily understand that the shape of the suction port is not limited to this shape. It can also be elliptical, rectangular, waist-shaped, polygonal, circular, or any regular or irregular irregular shape, as long as sufficient airflow can be ensured. It can also be a shape that facilitates sealing and connection with external vacuuming accessories, such as nozzles or hoses. The size of the suction port can also be adaptively adjusted according to the overall size of the water collection chamber and the design suction power of the vacuum cleaner. This invention does not limit this.

[0032] The aforementioned negative pressure source is typically a motor and a centrifugal fan or impeller mounted at its front end. The motor drives the fan to rotate at high speed, generating negative pressure at the rear opening of the water collection chamber 1, thereby drawing in external air through the suction port 10 and causing it to flow along the aforementioned airflow path. It should be noted that the specific form of the negative pressure source is not limited to a motor-driven fan; it can be any source capable of generating sufficient negative pressure at the rear opening of the water collection chamber 1 to draw in the gas-liquid mixture. For example, in alternative embodiments, the negative pressure source can also be an external central vacuum system, a pneumatic vacuum generator, or other device capable of generating negative pressure. The "external negative pressure source" mentioned in this invention refers to a power component that provides suction power, independent of the water collection chamber, and is typically installed inside the main unit of the vacuum cleaner, communicating with the air passage 12 inside the water collection chamber 1 through the rear opening.

[0033] Please refer to Figures 2-6 As shown, a circumferentially closed guide pipe 110 is formed between the guide port 11 and the suction port 10. The guide pipe 110 is used to guide the gas-liquid mixture from the guide port 11 vertically or obliquely into the lower part of the water collection tank 1. The guide port 11 is located below the guide pipe 110, with its outlet end facing the lower part of the water collection tank 1 (i.e., towards the bottom wall of the water collection tank). Specifically, the outlet direction of the guide port 11 is set to vertically downward or obliquely downward, so that when the gas-liquid mixture entering from the suction port 10 is guided by the guide pipe 110 and discharged from the guide port 11, the liquid water in it can fall directly into the lower space of the water collection tank 1 under the action of gravity, without splashing to the side or upward. In this embodiment, the angle between the outlet direction of the guide port 11 and the vertical direction is exemplarily 0° (vertically downward) or 15° (obliquely downward), but this angle is not limited to this. The objective of this invention can be achieved as long as it is ensured that the water in the exhaust mainly falls into the lower part of the water collection chamber 1 under the influence of gravity, rather than being directly carried into the air passage 12 inlet by the airflow. Those skilled in the art can appropriately adjust the direction of the guide port according to the overall size of the water collection chamber and the expected posture of the vacuum cleaner (such as the natural tilt angle when handheld), for example, setting the included angle between 0° and 45°. Therefore, this invention does not strictly limit the specific tilt angle of the guide port.

[0034] It is understood that the guide tube 110 and the suction port 10 can be two integrally formed parts on the same component, or they can be two independent parts manufactured separately and then fixed together by means of tight fitting, snap-fit, bonding, or threaded connection. As long as there is a circumferentially closed tubular channel between the suction port 10 and the guide port 110, allowing the gas-liquid mixture entering from the suction port 10 to be discharged from the guide port through this tubular channel, the guide tube 110 of the present invention is constituted. The present invention does not strictly limit the specific connection method between the guide tube 110 and the suction port 10.

[0035] Since the guide tube 110 collects the sucked-in liquid when the vacuum cleaner is working, if the guide tube 110 is only fixedly connected to the suction port 10, it may not be strong enough. Therefore, this embodiment strengthens its strength. Specifically, two side plates 13 extend rearward from the rear wall of the guide tube 110, and a tubular air channel 12 is provided between the two side plates 13. A reinforcing rib 14 is provided on each side of the tube wall of the air channel 12, and the reinforcing rib 14 is connected to the side plate 13. Through holes 140 are provided between the reinforcing rib 14 and the rear end of the guide tube 110 and / or between the reinforcing rib 14 and the inner wall of the rear end of the water collection tank 1 to allow air circulation.

[0036] Since the water collection chamber 1 is under negative pressure when the vacuum cleaner is working, the guide tube 110, as a key component guiding the gas-liquid mixture, may experience radial contraction or deformation if its rigidity is insufficient, affecting the stability of fluid flow. The side plate 13 extends longitudinally and is integrally connected to the rear wall of the guide tube 110, which is equivalent to adding a reinforcing rib structure to the rear of the guide tube 110, effectively improving the compressive and bending resistance of the guide tube 110 and preventing it from collapsing or twisting under negative pressure.

[0037] Please refer to Figure 5 and Figure 6 As shown, the air channel 12 is positioned between two side plates 13, and the inner wall of the side plate 13 is connected to the wall of the air channel 12 by reinforcing ribs 14. In this way, the side plates 13 not only define the position of the air channel 12 from both sides, but also provide stable support through the reinforcing ribs 14, ensuring that the air channel 12 remains coaxial or parallel to the guide pipe 110 and the rear motor air inlet, preventing the air channel from shifting or loosening due to gravity or vibration. Simultaneously, the side plates 13 and the reinforcing ribs 14 together form a frame-like support structure, connecting the guide pipe 110, the air channel 1, and the rear inner wall of the water collection tank 1 into a whole, improving the assembly rigidity and impact resistance of the entire water collection tank 1.

[0038] A reinforcing rib 14 is provided on each side of the air channel 12 to connect the side plate 13 and enhance structural rigidity. However, the invention is not limited thereto. To further improve the deformation resistance of the air channel 12 under negative pressure, especially when the water collection tank 1 is under a high vacuum, additional reinforcing ribs can be added to the wall of the air channel 12. For example, in an alternative embodiment, one or more auxiliary reinforcing ribs are also provided along the length of the air channel 12 on the upper part (i.e., the side facing the top of the water collection tank 1) and / or the lower part (i.e., the side facing the bottom of the water collection tank 1) of the air channel 12. These auxiliary reinforcing ribs can be integrally injection molded with the wall of the air channel 12. The auxiliary reinforcing ribs can extend along the entire length of the air channel 12, or they can be provided only in local areas of stress concentration (e.g., the middle section of the air channel).

[0039] Therefore, the side plate 13 achieves multiple functions: it enhances the strength of the guide tube 110 and reliably supports the air channel 12, which is conducive to multi-functional integration in a compact space, reduces the number of additional support components, and lowers manufacturing costs.

[0040] To prevent the sucked-in liquid from splashing onto the upper part of the integrated chamber 1 when the water intake is large or the suction force is strong, and to prevent the liquid from entering the air channel 12, a hollow water baffle 121 is installed inside the water collection chamber 1. The air inlet is covered by the water baffle 121 and is connected to the internal channel of the water baffle 121. Microholes 1211 are opened on the water baffle 121 to allow air to enter. The bottom of the water baffle 121 is connected to the pipe wall of the air channel 12, and the top of the water baffle 121 abuts against the inner wall of the upper part of the water collection chamber 1.

[0041] It should be emphasized that the aforementioned micropore 1211 serves as the air inlet. Air can only enter the air channel 12 through this micropore 1211, while water is blocked from entering due to the small size of the micropore and the proximity of the micropore 1211 to the top wall of the water collection tank 1.

[0042] The water-blocking cover 121 is connected to the shell of the water collection tank 1 only at its top. The sides and bottom of the water-blocking cover 121 do not contact the inner wall of the water collection tank 1, thus creating an airflow space. Micro-holes 1211 are located on the top of the side of the water-blocking cover 121 closest to the suction port 10. To further enhance the water-blocking and waterproofing effect, a sealing sleeve 1212 is fitted inside the water-blocking cover 121, with its top fitting against the top inner wall of the water collection tank 1. A raised strip 15 is provided on the top inner wall of the water collection tank 1, and the top of the water-blocking cover 121 abuts against the raised strip 15. The raised strip 15 increases the contact area and improves the sealing effect. The raised strip 15 also enhances the strength of the water collection tank 1; multiple raised strips 15 can be provided to further improve the strength of the water collection tank 1.

[0043] The water-blocking cover 121 raises the air inlet position, preventing water from directly entering. By placing the air inlet, i.e., the micropore 1211, at the top of the water-blocking cover 121, the air inlet is kept away from the water accumulation area at the bottom of the water collection tank 1. Even if the water level in the water collection tank 1 rises or there is shaking during use, liquid water is unlikely to directly contact the air inlet located at the top, thus effectively preventing water from being directly sucked into the air channel 12 by negative pressure. Since the water-blocking cover 121 is only connected to the shell at the top, with the sides and bottom suspended, air rising from the bottom to the top of the water collection tank 1 cannot directly enter the cavity inside the water-blocking cover 121. The air must first flow through the side space between the sides of the water-blocking cover 121 and the inner wall of the water collection tank 1, then go around to the front of the water-blocking cover 121, and finally enter the cavity of the water-blocking cover 121 through the micropore 1211 at the top of the front side. This extended and tortuous airflow path causes tiny water droplets that may be carried in the air to hit the outer wall of the water shield 121 or the inner wall of the water collection chamber 1 under the action of inertia, and then slide down the wall back to the lower part of the water collection chamber 1, thus realizing secondary gas-liquid separation.

[0044] The micropores 1211 can be narrow slits, with the openings facing the front or bottom of the water collection chamber 1. Liquid water has difficulty passing through narrow slits, while air can pass through smoothly. This feature further reduces the possibility of water entering the water shield 121 cavity. The rear side of the water shield 121 is a closed structure without any openings. When the vacuum cleaner suddenly moves or tilts during water suction, causing water in the water collection chamber to splash or pour towards the suction port 10, the closed rear side can effectively block the splashed water flow, preventing it from entering the air passage 12.

[0045] In this embodiment, the water shield 121, air channel 12, guide pipe 110, side plate 13 and other components can be integrated into an integrated internal frame without the need for additional independent waterproof components. This allows the entire water collection chamber 1 to achieve multiple waterproof functions within a limited space, making it suitable for handheld or vehicle-mounted small vacuum cleaners.

[0046] In summary, the water shield 121 significantly improves the waterproof reliability of the water collection chamber 1. Even when the vacuum cleaner is shaking, tilting, or sucking up a large amount of water in a short period of time, it can effectively prevent water from entering the air channel 12 and the motor, while ensuring smooth airflow.

[0047] A drain outlet 16 is provided at the bottom of the water collection tank 1. An anti-detachment sealing plug 161 is provided at the drain outlet 16 to remove the anti-detachment sealing plug 161 to drain the water in the water collection tank 1 during water discharge. One end of the anti-detachment sealing plug 161 is inserted into a fixing hole 160 at the bottom of the water collection tank 1 and is sealed to the fixing hole 160 by an interference fit; the other end of the anti-detachment sealing plug 161 is removably inserted into the drain outlet 16.

[0048] Unlike common car vacuum cleaners / handheld vacuum cleaners that require removing the integrated compartment to empty the sucked-up contents, the drain spout 16 allows for emptying without disassembling the entire water collection tank. Simply manually pull the end of the anti-detachment sealing plug 161 (the end inserted into the drain spout 16) out of the drain spout 16, and the accumulated water will flow out smoothly from the drain spout 16 under gravity. The operation is simple and quick, avoiding the splashing of water or soiling of hands that could occur when emptying the entire water collection tank 1.

[0049] In addition, you can refer to Figures 2-5 As shown, for ease of manufacturing and assembly, in this embodiment, an independent mounting base 17 is provided at the rear end of the water collection tank 1. The mounting base 17, the two side plates 13, the reinforcing ribs 14, and the air channel 12 are integrally formed or fixedly connected to form a single component. This integrated structure ensures accurate relative positions and firm connections between the components, eliminating the need for subsequent assembly, improving production efficiency, and reducing tolerance accumulation.

[0050] During assembly, the operator simply inserts the entire component from the rear of the water collection tank 1, allowing the outer wall of the mounting base 17 to be sealed and engaged with the inner wall of the rear end of the water collection tank 1 through an interference fit (or snap-fit ​​structure). Specifically, the periphery of the mounting base 17 is provided with a sealing flange (not shown in the figure) that matches the inner wall of the rear end of the water collection tank 1. When the mounting base 17 is pushed into place, the sealing flange forms an interference fit with the inner wall of the water collection tank 1, ensuring both airtightness and reliable fixation.

[0051] This "integrated frame + rear snap-fit" design has the following advantages: First, it integrates the complex internal structure into an independent module, which can be injection molded separately, reducing mold complexity and production costs; Second, during assembly, only one push-in step is needed to complete the positioning and fixing of all internal structures, simplifying the assembly process and improving production efficiency; Third, the interference fit sealing method does not require additional screws or adhesives, and disassembly is also convenient, facilitating after-sales maintenance or replacement; Fourth, since the mounting base 17 and the rear end of the water collection tank 1 are detachably connected, even if the main body of the water collection tank is damaged, there is no need to replace the entire internal frame, resulting in lower maintenance costs.

[0052] It is understood that, in alternative embodiments, the mounting base 17 can also be connected to the rear shell of the water collection tank 1 by welding, snap-locking, or screw fixing, as long as sealing and structural stability can be guaranteed. This invention does not strictly limit the specific connection method.

[0053] As a preferred approach, after the mounting base 17 is inserted into the rear end of the water collection tank 1 via an interference fit, the outer wall of the mounting base 17 fits tightly against the inner wall of the rear end of the water collection tank 1. However, the axial length of the mounting base 17 is shorter than the depth of the rear end of the water collection tank 1, so that a portion of the inner wall of the rear end of the water collection tank 1 (i.e., the section closest to the very end) is not covered by the mounting base 17, forming an exposed inner wall section. This exposed inner wall section can serve as the mounting structure for the water collection tank 1 to mate with the vacuum cleaner motor. Specifically, when the water collection tank 1 is assembled onto the vacuum cleaner's grip 2 (or body), the sealing ring or positioning flange around the motor air inlet can directly abut or engage with this exposed inner wall section at the rear end of the water collection tank 1, thereby achieving precise positioning and fixation. This design avoids the mounting base 17 directly bearing the force from the motor side, instead transmitting the load through the housing of the water collection tank 1 itself, enhancing the reliability and stability of the connection, and also facilitating the independent assembly and disassembly of the mounting base 17 without affecting the mating dimensions between the water collection tank 1 and the main unit.

[0054] Of course, the present invention is not limited to the structure of the mounting base 17 described above. In another embodiment, the shell of the water collection tank 1 can be integrally formed with the side plate 13, reinforcing rib 14, air channel 12, and rear wall of the guide pipe 110 through injection molding, forming a complete and inseparable water collection tank 1. In this embodiment, the rear inner wall of the water collection tank 1 naturally forms a mounting structure that mates with the motor (for example, directly mates with the sealing ring of the motor air inlet through the step or groove of the rear inner wall), eliminating the need for a separate mounting base 17. This integral molding solution eliminates the assembly step of the mounting base 17.

[0055] Those skilled in the art will understand that, regardless of whether an independent mounting base 17 is used for snap-fitting or integral molding, as long as the internal structure is positioned and connected at the rear end of the water collection tank 1, it falls within the protection scope of this invention.

[0056] Example 2 Example 2 provides a vacuum cleaner that uses the water collection tank structure of Example 1.

[0057] Please refer to Figure 1 The vacuum cleaner shown includes: a grip 2, in which a motor is installed; and a water collection tank 1 as described in Embodiment 1; the water collection tank 1 is detachably mounted on the grip 2, and the rear opening of the water collection tank 1 is connected to the air inlet of the motor.

[0058] When the vacuum cleaner is working, the motor drives the fan to rotate at high speed, creating negative pressure in the water collection chamber 1. External gas-liquid mixtures are drawn into the water collection chamber 1 through suction accessories (such as nozzles or hoses, not shown in the figure) or directly through the suction inlet 10. Inside the water collection chamber 1, the separation process of the gas-liquid mixture is the same as described in Example 1: water falls vertically or obliquely into the lower part of the water collection chamber 1 through the guide pipe 110 from the guide port 11, while air rises from the lower part of the water collection chamber to the upper part, then enters the air channel 12 through the micro-holes 1211 at the top of the water baffle 121, and finally enters the motor through the rear opening and the air inlet on the grip 2, and is discharged from the air outlet at the rear or side of the main unit. During this process, water is effectively blocked within the water collection chamber 1 and does not enter the motor.

[0059] The detachable installation method of the water collection tank 1 and the grip 2 can be a snap-fit, screw-fit, threaded, or magnetic connection. This embodiment exemplarily uses a snap-fit ​​connection: the rear sides of the water collection tank 1 have slots, and the front end of the grip 2 has corresponding claws. When the user pushes the water collection tank 1 into the front end of the grip 2, the claws automatically engage with the slots. To remove the water collection tank 1, press the release button on the grip 2 to disengage the claws from the slots, allowing the water collection tank 1 to be pulled forward. This installation method is simple to operate and provides a reliable connection. Alternatively, the rear inner wall of the water collection tank 1 has at least one groove, and the front outer periphery of the grip has a corresponding protrusion. During assembly, the rear end of the water collection tank 1 is fitted onto the front end of the grip 2, aligning the protrusion with the entrance of the groove. Then, the water collection tank 1 is rotated in a predetermined direction (e.g., clockwise), and the protrusion slides along the groove to the locking position. Simultaneously, the rear opening edge of the water collection tank 1 is pressed against the outer edge of the air inlet at the front end of the grip, forming a tight connection. To disassemble, rotate the water collection chamber 1 in the opposite direction; the protrusion will disengage from the groove, allowing the water collection chamber 1 to be pulled forward. This rotating snap-fit ​​method is convenient to operate and provides a reliable connection.

[0060] Once the water collection chamber 1 has accumulated to a certain amount, it can be removed first. Then, following the method described in Example 1, the anti-detachment sealing plug 161 at the bottom of the water collection chamber can be removed to drain the accumulated water from the drain outlet 16. After cleaning, the anti-detachment sealing plug 161 can be re-tightened and the water collection chamber 1 can be reinstalled in the grip part 2 for reuse.

[0061] Furthermore, in this embodiment, the water collection chamber 1 and the handle 2 are connected in a detachable manner. Therefore, when the user does not need the water suction function, the water collection chamber 1 can be removed from the handle 2 and replaced with a conventional dust collection chamber, i.e., a dust collection chamber for dry vacuuming (not shown in the figure). This conventional dust collection chamber can use the same mounting interface as the water collection chamber 1 (such as the same protrusion or slot structure), allowing it to be installed on the front end of the handle 2 in the same rotating snap-fit ​​manner. After replacing the dust collection chamber, the vacuum cleaner can be used for conventional dry vacuuming, collecting dry debris such as dust and hair. When liquid stains need to be treated, the dust collection chamber can be replaced back with the water collection chamber 1. Through this interchangeable design, a single vacuum cleaner main unit can be adapted to both the water collection chamber 1 and the dust collection chamber, realizing both wet and dry use, further expanding the product's application scenarios and convenience. Those skilled in the art will understand that the specific internal structure of the dust collection chamber can be designed according to actual needs, as long as its interface for connecting to the main unit is consistent with that of the water collection chamber.

[0062] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A water collection tank for a vacuum cleaner, characterized in that, An intake port (10) is provided at the front of the water collection tank (1); The water collection chamber (1) also has a guide port (11) connected to the suction port (10) for guiding the inhaled gas-liquid mixture to the lower part of the water collection chamber (1); An air channel (12) is provided inside the water collection chamber (1). The air channel (12) is connected to an external negative pressure source through the rear opening of the water collection chamber (1). An air inlet is provided at the upper part of the air channel (12) so that air can enter the air channel (12) from the air inlet. The air entering from the intake port (10) flows sequentially through: the guide port (11), the lower part of the water collection chamber (1), the air inlet, and the air passage (12).

2. The water collection tank for a vacuum cleaner according to claim 1, characterized in that: A closed guide tube (110) is formed between the guide port (11) and the suction port (10). The guide tube (110) is used to guide the gas-liquid mixture to fall vertically or obliquely from the guide port (11) into the lower part of the water collection tank (1).

3. The water collection tank for a vacuum cleaner according to claim 1, characterized in that: The rear wall of the guide pipe (110) extends into two side plates (13), and there is a tubular air channel (12) between the two side plates (13); a reinforcing rib (14) is provided on each side of the wall of the air channel (12), and the reinforcing rib (14) is connected to the side plate (13); a through hole (140) is provided between the reinforcing rib (14) and the rear end of the guide pipe (110) and / or between the reinforcing rib (14) and the inner wall of the rear end of the water collection tank (1) for air circulation.

4. A water collection tank for a vacuum cleaner according to claim 1 or 3, characterized in that: A hollow water-blocking cover (121) is provided inside the water collection tank (1). The air inlet is covered by the water-blocking cover (121) and communicates with the internal channel of the water-blocking cover (121). Micro-holes (1211) are opened on the water-blocking cover (121) to allow air to enter. The bottom of the water-blocking cover (121) is connected to the pipe wall of the air channel (12), and the top of the water-blocking cover (121) abuts against the inner wall of the upper part of the water collection tank (1).

5. A water collection tank for a vacuum cleaner according to claim 4, characterized in that: The water shield (121) is connected to the shell of the water collection chamber (1) only at the top. The sides and bottom of the water shield (121) do not contact the inner wall of the water collection chamber (1), thus forming an airflow space. The micropore (1211) is located on the top of the side of the water shield (121) near the inlet (10).

6. A water collection tank for a vacuum cleaner according to claim 4, characterized in that: The water shield (121) is fitted with a sealing sleeve (1212), and the top of the sealing sleeve (1212) is in contact with the top inner wall of the water collection tank (1).

7. A water collection tank for a vacuum cleaner according to claim 4, characterized in that: The top inner wall of the water collection tank (1) is provided with a protrusion (15), and the top of the water baffle (121) abuts against the protrusion (15).

8. A water collection tank for a vacuum cleaner according to claim 1, characterized in that: The bottom of the water collection tank (1) is provided with a drain outlet (16), and a non-detachable sealing plug (161) is provided at the drain outlet (16) for removing the non-detachable sealing plug (161) to drain the water in the water collection tank (1) when draining water.

9. A water collection tank for a vacuum cleaner according to claim 8, characterized in that: One end of the anti-detachment sealing plug (161) is inserted into the fixing hole (160) at the bottom of the water collection tank (1) and is sealed to the fixing hole (160) by interference fit; the other end of the anti-detachment sealing plug (161) is removably inserted into the drain outlet (16).

10. A water-absorbing vacuum cleaner, characterized in that, include: A gripping part (2) is provided, and a motor is installed inside the gripping part (2); And the water collection tank (1) according to any one of claims 1 to 9; the water collection tank (1) is detachably mounted on the grip (2), and the rear opening of the water collection tank (1) is connected to the air inlet of the motor.

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