Household appliance having a water-washing water ingress prevention structure

Abstract

This utility model relates to the field of household appliance technology, specifically to a household appliance with a water-proof structure for washing. It includes a connecting piece and a hand valve assembly. The hand valve assembly is installed at the drain hole of the household appliance and includes a hand-tightening ring, a rotating tube, a connecting pipe, a closing valve, a rotation limiter, and a duckbill valve. The rotating tube is embedded in and rotatably connected to the drain hole. One end of the rotating tube, located outside the household appliance, is fixed to the hand-tightening ring, and the other end is threadedly connected to the connecting pipe. The duckbill valve is fixed inside the connecting pipe, and the closing valve is fixed to the outer wall of the connecting pipe to close the drain outlet. A rotation limiter is provided at the interval between the two closing valves, fixed to the connecting piece and pressed against the closing valve to restrict the rotation of the connecting pipe. This utility model, through the cooperation of the duckbill valve and the vent hole, automatically opens to release air when the internal pressure of the appliance increases due to heat from electronic components, achieving pressure balance between the inside and outside of the casing, preventing the appliance casing from expanding due to excessive pressure, and reducing the risk of water leakage at the casing connection.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, specifically to a household appliance with a water-washable and water-proof structure. Background Technology

[0002] Household appliances, or home appliances for short, refer to various electrical and electronic appliances used in homes and similar places. More specifically, they generally refer to microwave ovens, ovens, dishwashers, and various food processors. These products must have drainage holes at the bottom. Although drainage holes are part of the national standard design requirements, the potential risks they bring cannot be ignored and need to be addressed through safer design and usage guidelines.

[0003] To address the aforementioned issues, patent CN222479607U discloses a household appliance with a water-proof structure designed for washing, incorporating a solenoid valve assembly between the appliance's main body and the bottom cover. This solenoid valve assembly controls the opening and closing of the drain hole. During appliance operation, the solenoid valve opens the drain hole, ensuring necessary ventilation or drainage and meeting the appliance's safe operation requirements. However, when the appliance is off or undergoing cleaning or maintenance, the solenoid valve closes the drain hole, preventing water from entering the appliance's interior through the drain hole, effectively preventing appliance malfunctions and safety risks.

[0004] However, when implementing the above-mentioned household appliance with a water-proof structure, at least the following problems were found: Although the solenoid valve assembly can control the closing of the drain hole, after the drain hole is closed, the internal electronic components of the appliance heat up, which can easily increase the internal pressure of the appliance. It is difficult to balance the pressure inside and outside the appliance shell, which causes the appliance shell to expand to a certain extent. Over time, water leakage is likely to occur at the connection of the appliance shell, resulting in a problem of poor shell sealing. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a household appliance with a water-washable and water-proof structure, thus solving the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides a household appliance with a water-proof structure, comprising: a connecting piece, which is bolted to the bottom of the household appliance and sealed at the connection between the connecting piece and the household appliance; a plurality of annular arrayed drain outlets are provided on the connecting piece, and an exhaust hole is provided at the center of the plurality of drain outlets; and a hand valve assembly, which is installed at the drain outlet of the household appliance, the hand valve assembly comprising a hand-tightening ring, a rotating tube, a stop tube, a closing valve, a rotation limiter, and a duckbill valve; the rotating tube is embedded in and rotatably connected to the drain outlet; one end of the rotating tube outside the household appliance is fixed to the hand-tightening ring, and the other end is threadedly connected to the stop tube; the duckbill valve is fixed inside the stop tube; the closing valve is fixed to the outer wall of the stop tube for closing the drain outlet; and the rotation limiter is provided at the interval between the two closing valves, the rotation limiter being fixed to the connecting piece and abutting against the closing valve to restrict the rotation of the stop tube.

[0009] Optionally, the rotating pipe is provided with a connector, which is fixed at the drain outlet. A fitting ring is fixed on the outer wall of the rotating pipe, and the rotating pipe is embedded in the connector through the fitting ring and rotatably connected to the connector.

[0010] Optionally, a waterproof gasket is fixed at the connection between the connector and the drain outlet, and the waterproof gasket seals the connection between the connector and the drain outlet.

[0011] Optionally, the rotation limiter is fixed to the connector and abuts against the closing valve.

[0012] Optionally, a second waterproof gasket is fixed at the connection between the connecting piece and the household appliance, and the second waterproof gasket seals the connection between the connecting piece and the household appliance.

[0013] Optionally, the number of drain outlets is three, which are arranged in a ring shape, and the number of closing valves is the same as the number of drain outlets.

[0014] Optionally, each of the closing valves has a semi-circular sealing protrusion with a trapezoidal cross-section fixed at its bottom. The semi-circular sealing protrusion can be embedded in the drain outlet and play a sealing role.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a household appliance with a water-proof structure that is easy to wash, which has the following advantages:

[0017] 1. This utility model utilizes the cooperation of a duckbill valve and an exhaust port. When the internal pressure of the appliance increases due to heat generated by electronic components, the duckbill valve automatically opens to release air, achieving pressure balance between the inside and outside of the casing. This prevents the appliance casing from expanding due to excessive pressure and reduces the risk of water leakage at the casing joints. The closing valve in the hand valve assembly can effectively seal the drain outlet when cleaning or when the drainage function is not in use, preventing water from entering the appliance. At the same time, the one-way characteristic of the duckbill valve can also prevent water from entering through the exhaust port, providing double protection and enhancing the water ingress prevention effect.

[0018] 2. A second waterproof gasket is fixed at the connection between the connecting piece and the household appliance. The second waterproof gasket seals the connection between the connecting piece and the household appliance. The second waterproof gasket can prevent water from penetrating at the connection between the connecting piece and the household appliance, protect the internal circuits and components of the appliance from water damage, and reduce the probability of short circuits, corrosion and other faults.

[0019] 3. The bottom of the closed valve of this utility model is fixed with a semi-circular sealing protrusion with a trapezoidal cross section. The semi-circular sealing protrusion can be embedded into the drain port and play a sealing role. The shape of the semi-circular sealing protrusion can fit well with the drain port. After being embedded into the drain port, it can effectively fill the gap and prevent water from leaking from the connection between the closed valve and the drain port. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 A schematic diagram of the hand valve assembly structure is shown;

[0022] Figure 3 It shows Figure 2 A schematic diagram of the structure viewed from below;

[0023] Figure 4 It shows Figure 2 A schematic diagram of the cross-sectional structure.

[0024] In the diagram: 1. Connecting piece; 2. Drain outlet; 3. Vent hole; 4. Hand-tightening ring; 5. Rotating pipe; 6. Abutment pipe; 7. Closing valve; 8. Rotation limit bracket; 9. Duckbill valve; 10. Connecting piece; 11. Waterproof gasket one; 12. Waterproof gasket two; 13. Semi-circular sealing protrusion. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example: Please refer to Figures 1 to 4 According to an embodiment of this utility model, a technical solution is provided: a household appliance with a water-proof structure for washing includes: a connecting piece 1, which is bolted to the bottom of the household appliance and sealed at the connection between the connecting piece 1 and the household appliance; a plurality of annular array drain ports 2 are provided on the connecting piece 1, and an exhaust hole 3 is provided at the center of the plurality of drain ports 2; a hand valve assembly, which is installed at the drain port of the household appliance; the hand valve assembly includes a hand-tightening ring 4, a rotating tube 5, a stop tube 6, a closing valve 7, a rotation limiter 8, and a duckbill valve 9; the rotating tube 5 is embedded and rotatably connected to the drain port; one end of the rotating tube 5 located outside the household appliance is fixed to the hand-tightening ring 4, and the other end is threadedly connected to the stop tube 6; the duckbill valve 9 is fixed inside the stop tube 6; the closing valve 7 is fixed to the outer wall of the stop tube 6 for closing the drain port 2; a rotation limiter 8 is provided at the interval between the two closing valves 7; the rotation limiter 8 is fixed to the connecting piece 1 and abuts against the closing valve 7 to limit the rotation of the stop tube 6.

[0027] When a household appliance with the aforementioned water-proof and washable structure needs to drain, turning the hand-tightening ring 4 rotates the rotating pipe 5, causing the abutment pipe 6 to move upwards. At this time, the closing valve 7 no longer blocks the drain outlet 2, allowing water inside the appliance to drain out through the drain outlet 2. After draining, turning the hand-tightening ring 4 in the opposite direction moves the abutment pipe 6 downwards, and the closing valve 7 re-closes the drain outlet 2. During appliance operation, if the internal pressure increases, gas pushes open the duckbill valve 9 and is discharged through the vent 3, achieving pressure balance. When cleaning the appliance, ensure that the abutment pipe 6 is screwed in properly, the closing valve 7 completely seals the drain outlet 2, and the duckbill valve 9 also prevents water from entering through the vent 3, effectively protecting the internal components of the appliance.

[0028] By cooperating with the duckbill valve 9 and the vent 3, when the internal pressure of the appliance increases due to the heat generated by the electronic components, the duckbill valve 9 automatically opens to release air, achieving pressure balance inside and outside the casing, preventing the appliance casing from expanding due to excessive pressure, and reducing the risk of water leakage at the casing connection; the closing valve 7 in the hand valve assembly can effectively seal the drain port 2 when cleaning or when the drainage function is not in use, preventing water from entering the appliance; at the same time, the one-way characteristic of the duckbill valve 9 can also prevent water from entering through the vent 3, providing double protection to improve the water ingress prevention effect.

[0029] The rotating pipe 5 is provided with a connector 10, which is fixed at the drain outlet 2. A fitting ring is fixed on the outer wall of the rotating pipe 5. The rotating pipe 5 is embedded in the connector 10 through the fitting ring and rotates to connect with the connector 10. The connector 10 is fixed at the drain outlet 2, providing a stable installation base and support point for the rotating pipe 5, so that the rotating pipe 5 can maintain a stable position at the drain hole, ensuring the overall structure of the hand valve assembly is stable and preventing the rotating pipe 5 from shaking or shifting during use.

[0030] A waterproof gasket 11 is fixed at the connection between the connector 10 and the drain outlet 2. The waterproof gasket 11 seals the connection between the connector 10 and the drain outlet 2. The waterproof gasket 11 can fill the tiny gap between the connector 10 and the drain outlet 2, preventing water from penetrating into the interior of the household appliance through these gaps, thereby protecting the electronic components and other parts inside the appliance from water corrosion and reducing the risk of appliance failure due to water ingress.

[0031] The rotation limit bracket 8 is fixed to the connector 10 and abuts against the closing valve 7. The rotation limit bracket 8 makes the installation and commissioning of the closing valve 7 more convenient. During installation, the rotation limit bracket 8 can act as a positioning device to help accurately install the closing valve 7 and ensure its fit with the connector 10 and other components.

[0032] A waterproof gasket 2 12 is fixed at the connection point between the connecting piece 1 and the household appliance. The waterproof gasket 2 12 seals the connection point between the connecting piece 1 and the household appliance. The waterproof gasket 2 12 can prevent water from penetrating at the connection point between the connecting piece 1 and the household appliance, protect the internal circuits and components of the appliance from water damage, and reduce the probability of short circuits, corrosion and other faults.

[0033] There are three drain outlets 2, which are arranged in a ring shape. The closing valve 7 is fan-shaped and has the same number as the drain outlets 2. The three drain outlets 2 arranged in a ring shape can be reasonably distributed in a limited space, making full use of the surrounding space and making the layout of the drainage system more compact and reasonable.

[0034] Each of the closed valves 7 has a trapezoidal semi-circular sealing protrusion 13 fixed to its bottom. The semi-circular sealing protrusion 13 can be embedded into the drain port 2 and perform a sealing function. The shape of the semi-circular sealing protrusion 13 can fit well with the drain port 2. After being embedded into the drain port 2, it can effectively fill the gap and prevent water from leaking from the connection between the closed valve 7 and the drain port 2. The trapezoidal cross-section design allows the sealing protrusion to form a gradually tightening sealing structure when embedded into the drain port 2. As the closed valve 7 is pressed down, the sealing effect will be better, further improving the reliability of the seal.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A household appliance having a water-washing water intrusion prevention structure, characterized in that, include: A connecting piece (1) is bolted to the bottom of a household appliance. The connection between the connecting piece (1) and the household appliance is sealed. A plurality of annular array drain holes (2) are provided on the connecting piece (1). An exhaust hole (3) is provided at the center of the plurality of drain holes (2). A hand valve assembly is installed at the drain hole of a household appliance. The hand valve assembly includes a hand-tightening ring (4), a rotating tube (5), an abutment tube (6), a closing valve (7), a rotation limiter (8), and a duckbill valve (9). The rotating tube (5) is embedded and rotatably connected to the drain hole. One end of the rotating tube (5) located outside the household appliance is fixed to the hand-tightening ring (4), and the other end is threadedly connected to the abutment tube (6). The duckbill valve (9) is fixed inside the abutment tube (6). The closing valve (7) is fixed to the outer wall of the abutment tube (6) to close the drain outlet (2). The rotation limiter (8) is provided at the interval between the two closing valves (7). The rotation limiter (8) is fixed on the connecting piece (1) and abuts against the closing valve (7) to restrict the rotation of the abutment tube (6).

2. A household appliance with a water-washable and water-proof structure according to claim 1, characterized in that: The rotating pipe (5) is provided with a connector (10) which is fixed at the drain outlet (2). The outer wall of the rotating pipe (5) is fixed with a fitting ring. The rotating pipe (5) is embedded in the connector (10) through the fitting ring and is rotatably connected to the connector (10).

3. A household appliance with a water-washable and water-proof structure according to claim 2, characterized in that: A waterproof gasket (11) is fixed at the connection between the connector (10) and the drain outlet (2), and the waterproof gasket (11) seals the connection between the connector (10) and the drain outlet (2).

4. A household appliance with a water-washable and water-proof structure according to claim 3, characterized in that: The rotation limiter (8) is fixed on the connector (10) and abuts against the closing valve (7).

5. A household appliance with a water-washable and water-proof structure according to claim 1, characterized in that: A waterproof gasket (12) is fixed at the connection between the connecting piece (1) and the household appliance, and the waterproof gasket (12) seals the connection between the connecting piece (1) and the household appliance.

6. A household appliance with a water-washable and water-proof structure according to claim 1, characterized in that: There are three drain outlets (2), which are in a ring shape. The closing valve (7) is fan-shaped and has the same number as the drain outlets (2).

7. A household appliance with a water-washable and water-proof structure according to claim 6, characterized in that: The bottom of each of the closed valves (7) is fixed with a semi-circular sealing protrusion (13) with a trapezoidal cross section. The semi-circular sealing protrusion (13) can be embedded into the drain port (2) and play a sealing role.

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