Dish washing machine drain pipe accessory, dish washing machine drain pipe and dish washing machine
By designing dishwasher drain pipe accessories and utilizing the disconnect structure and movable airtight device between the water inlet pipe and the drain pipe, the problem of odor backflow in the sewer is solved, achieving effective odor prevention and efficient drainage.
Patent Information
- Application Number
- CN202422668276.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-11-01
AI Technical Summary
The odor from the existing dishwasher sewer is easily backflowed into the machine, causing the washed dishes to have an odor. The existing water trap cannot effectively prevent the odor from entering.
A dishwasher drain pipe accessory is designed, including a shell, a water inlet pipe and a drain pipe. The water outlet of the water inlet pipe is disconnected from the water inlet of the drain pipe. A movable airtight device and a ventilation window are provided to form an air gap to prevent odor from entering. The airtight device is opened by gravity and water flow impact, and the seal is restored after drainage is completed.
Effectively prevent sewer odors from entering the dishwasher, ensure tableware is clean, improve sealing and drainage efficiency, and prevent odor backflow.
Smart Images
Figure CN223365497U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of dishwashers and relates to a dishwasher drain pipe accessory, a dishwasher drain pipe and a dishwasher. Background Art
[0002] A dishwasher is a household appliance that automatically washes dishes by spraying hot water and detergent, then dries them afterward. Dishwashers are widely used in our daily lives. The dishwasher drain pipe is a crucial component connecting the dishwasher to the household drainage system, directing wastewater from the dishwasher to the sewer. Besides draining water, the dishwasher drain pipe also needs to prevent backflow, preventing dirt or odors from the sewer from flowing back into the dishwasher.
[0003] However, existing dishwashers often experience a foul or "swill" odor. This is primarily caused by odors from the sewer entering the dishwasher through the drainpipe, leaving dishes washed in the dishwasher with an unpleasant odor and making them difficult to use. The current approach involves installing a trap in the dishwasher's drainpipe. However, this approach has the disadvantage that even a small amount of wastewater accumulated in the trap can carry an odor. Alternatively, if the trap dries up, the drain pipes at either end of the trap can become ventilated, allowing odors from the sewer to enter the dishwasher without a barrier. This inability to effectively prevent odors from entering the dishwasher leads to a persistent backflow of odors into the dishwasher.
[0004] Therefore, a device is needed to effectively prevent odor from entering the dishwasher through the dishwasher drain pipe to solve the above technical problems. Utility Model Content
[0005] The technical solution adopted by the utility model to solve the technical problem is: a dishwasher drain pipe accessory, comprising: a shell, a water inlet pipe, and a drain pipe; the shell is provided with a cavity inside, a ventilation window is provided on the top of the shell, the water outlet of the water inlet pipe and the water inlet of the drain pipe are respectively located in the cavity of the shell, and the water inlet of the water inlet pipe and the water outlet of the drain pipe are respectively located outside the shell; the ventilation window connects the internal cavity of the shell with the external space;
[0006] The water outlet of the water inlet pipe is suspended from top to bottom toward the water inlet of the drain pipe;
[0007] The diameter of the drainage pipe inlet shall not be smaller than the diameter of the water inlet pipe outlet.
[0008] Furthermore, a movable airtight device is provided at the water outlet of the water inlet pipe, which is subjected to elastic force and can reciprocate to open and close the fluid channel of the water inlet pipe.
[0009] Furthermore, the movable airtight device includes: a movable cover plate that flips open and close along a horizontal axis, and a piston plug that reciprocates open and close along a vertical axis.
[0010] Furthermore, the movable cover includes: a single-axis single-side opening and closing cover, a double-axis split cover, a return spring is provided at the rotating shaft of the movable cover, and the movable cover is a normally closed cover.
[0011] Furthermore, an inverted cone-shaped funnel-shaped trumpet mouth is provided at the water inlet of the drainage pipe.
[0012] Furthermore, the ventilation window is covered with a mesh cover.
[0013] Furthermore, an overflow hole is provided at the bottom of the shell, the inner end of the overflow hole is connected to the shell cavity, and the outer end of the overflow hole is connected to the pipe section of the drain pipe located outside the shell through an overflow pipe, and the connection node where the overflow pipe is connected to the drain pipe is lower than the height of the overflow hole.
[0014] Furthermore, the outer shell is columnar, and the water outlet section of the water inlet pipe and the water inlet section of the drain pipe are both vertical.
[0015] The utility model also discloses a dishwasher drain pipe, which is assembled or manufactured using the above-mentioned dishwasher drain pipe accessories.
[0016] The utility model also discloses a dishwasher, which is assembled or manufactured using the above-mentioned dishwasher drain pipe.
[0017] The beneficial effects of the utility model are:
[0018] 1. The utility model disconnects the water outlet of the water inlet pipe from the water inlet of the drain pipe, thereby creating an air gap in the water flow channel of the dishwasher drain pipe that allows both normal downward drainage and outward discharge of odors. The dishwasher drain water flows through an air gap before continuing to drain, thereby effectively preventing sewer odors from entering the dishwasher.
[0019] 2. The utility model provides a movable airtight device at the water outlet of the water inlet pipe that can reciprocally open and close the fluid channel of the water inlet pipe, so that the escaping odor in the empty gap where the odor is discharged to the outside cannot enter the water outlet of the water inlet pipe, thereby improving the sealing performance of the water inlet pipe outlet and enhancing the effect of the dishwasher drain pipe accessory in preventing odor from entering. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of a dishwasher drain pipe accessory, a dishwasher drain pipe, and a dishwasher drain pipe accessory of the utility model;
[0021] Figure 2 This utility model Figure 1 A-direction local enlarged view;
[0022] Figure 3It is a schematic diagram of a dishwasher connected to a drain pipe accessory of the present invention.
[0023] Among them, 1. Shell; 2. Water inlet pipe; 3. Drain pipe; 4. Ventilation window; 5. Movable airtight device; 6. Bell mouth; 7. Mesh cover; 8. Overflow hole; 9. Overflow pipe. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the relevant technologies in the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0025] refer to Figures 1 to 3 As shown, a dishwasher drain pipe accessory of this embodiment includes: a housing 1, a water inlet pipe 2, and a drain pipe 3. The housing 1 has a cavity inside, and a vent window 4 is provided on the top of the housing 1. The water outlet of the water inlet pipe 2 and the water inlet of the drain pipe 3 are respectively located in the cavity of the housing 1, and the water inlet of the water inlet pipe 2 and the water outlet of the drain pipe 3 are respectively located outside the housing 1. The vent window 4 connects the internal cavity of the housing 1 with the external space.
[0026] The outlet of the water inlet pipe 2 is suspended from top to bottom toward the water inlet of the drain pipe 3; the distance between the outlet of the water inlet pipe 2 and the water inlet of the drain pipe 3 is 1 to 5 times the diameter of the water inlet pipe 2. This distance can ensure that the water flows from the water inlet pipe 2 into the drain pipe 3, and at the same time can ensure that there is enough lateral overflow and dispersion channel for odor; when the dishwasher is draining, the water flows through the water inlet pipe 2 and then flows into or into the water inlet of the drain pipe 3 from the outlet of the water inlet pipe 2. Since the outlet of the water inlet pipe 2 and the water inlet of the drain pipe 3 are disconnected, However, the drain pipe 3 is located below the water inlet pipe 2, and the diameter of the drain pipe 3 is larger than that of the water inlet pipe 2. Therefore, the gap between the two openings ensures that water flows smoothly, and finally the dishwasher drainage water flows through the drain pipe 3 and is discharged into the sewage drainage system. When the odor in the sewage drainage system rises from the drain pipe 3, the odor overflows at the water inlet of the drain pipe 3 and is discharged through the ventilation window 4 on the top of the housing 1. Therefore, the odor no longer enters the water outlet of the water inlet pipe 2, ensuring that the odor in the sewage drainage system cannot rise into the dishwasher.
[0027] The diameter of the water inlet of the drainage pipe 3 is not less than the diameter of the water outlet of the water inlet pipe 2;
[0028] The water inlet of the water inlet pipe 2 is used to connect to the drain outlet of the dishwasher, and the water outlet of the drain pipe 3 is used to connect to the drainage system.
[0029] Furthermore, a movable air-tight device 5 is provided at the water outlet of the water inlet pipe 2, which is elastically forceful and can reciprocate to open and close the fluid channel of the water inlet pipe 2; the movable air-tight device 5 is a normally closed device, which is used to close the fluid channel at the drain outlet of the dishwasher when the dishwasher is not draining, so as to prevent odor from rising; and when the dishwasher is draining, the movable air-tight device 5 is opened by the impact of the water flow, and the elastic return device is elastically deformed by the impact to accumulate energy; when the dishwasher finishes draining, the elastic return device is restored to its original state, so that the movable air-tight device 5 is restored to the closed state again.
[0030] Furthermore, the movable airtight device 5 includes: a movable cover plate that flips open and close along a horizontal axis, and a piston plug that reciprocates and opens and closes along a vertical axis; the movable cover plate opening device is simple, convenient and reliable, and the piston plug has better sealing performance. Different movable airtight devices 5 can be selected according to the model and specifications of the dishwasher, the anti-odor sealing requirements and the actual situation on site.
[0031] Furthermore, the movable cover includes: a single-axis single-side opening and closing cover, a double-axis split cover, a return spring is provided at the rotating shaft of the movable cover, and the movable cover is a normally closed cover.
[0032] Furthermore, an inverted cone-shaped funnel-shaped bell mouth 6 is provided at the water inlet of the drain pipe 3; the bell mouth 6 helps to ensure that the drainage falls into the drain pipe 3 from the water inlet pipe 2, while ensuring that the odor has sufficient lateral overflow and dissipation channels, and at the same time prevents the drainage from splashing and causing the internal cavity of the shell 1 to become wet or waterlogged.
[0033] Furthermore, the ventilation window 4 is covered with a mesh cover 7; the mesh cover 7 prevents insects from entering the drainage system through the ventilation window 4.
[0034] Furthermore, an overflow hole 8 is provided at the bottom of the shell 1, the inner end of the overflow hole 8 is connected to the cavity of the shell 1, and the outer end of the overflow hole 8 is connected to the pipe section of the drain pipe 3 located outside the shell 1 through the overflow pipe 9, and the connection node of the overflow pipe 9 connected to the drain pipe 3 is lower than the height of the overflow hole 8; the overflow hole 8 is used to ensure that the water accumulated in the internal cavity of the shell 1 can be discharged into the drain pipe 3 in time, thereby ensuring the reliable use of the dishwasher drain pipe accessories.
[0035] Furthermore, the shell 1 is columnar, including cylindrical and square, and the water outlet section of the water inlet pipe 2 and the water inlet section of the drain pipe 3 are both vertical; the shape of the shell 1 has little effect on the function of the dishwasher drain pipe accessories, and it is only necessary to ensure that the water outlet section of the water inlet pipe 2 and the water inlet of the drain pipe 3 are accommodated in the internal cavity of the shell 1; the water outlet section of the water inlet pipe 2 and the water inlet section of the drain pipe 3 are both vertical and facing each other, which is the best choice, so that the dishwasher water can fall freely under gravity, thereby improving the drainage efficiency.
[0036] Example
[0037] By installing a dishwasher drain pipe accessory on the drain pipe 3, the location is detailed in the attached Figure 3 As shown, the dishwasher drain pipe attachment is close to the left side of the vegetable sink and is 100mm higher than the countertop. When the dishwasher on the right side of the dishwasher drain pipe attachment is draining, the water flows through the movable cover of the outlet movable airtight device 5, and then flows through an air gap (30mm) before entering the downstream drainage pipe. If a small amount of water splashes out, it can be discharged through the overflow hole 8 and overflow pipe 9. See the attached diagram for details. Figure 1 As shown;
[0038] After the dishwasher stops draining, the movable cover rebounds and closes. At this time, the odor in the sewage drainage system rises along the drain pipe 3. When passing through the air gap, the odor in the sewage drainage system will directly enter the external air. In addition, due to the dual effect of the airtightness of the movable cover, the odor will not enter the dishwasher drain pipe 3 at all, thus avoiding the odor in the sewage drainage system in the dishwasher.
[0039] Secondly, if the downstream pipe of the dishwasher becomes clogged during drainage, wastewater will flow along the drain pipe 3 to the top of the dishwasher's drain pipe attachment, then overflow from the cover of the insect screen 7 and flow into the sink. This phenomenon will draw the attention of the dishwasher user, prompting them to shut down the dishwasher and clear the clogged pipe immediately. Furthermore, even if the dishwasher user fails to notice it in time, the water tank of an ordinary sink is large enough to handle the dishwasher's drainage, thus minimizing the impact on the dishwasher's normal operation.
[0040] Finally, the cover of the insect-proof net cover 7 can be opened to regularly clean and flush the stains in the device to avoid bacterial growth.
[0041] To sum up, the utility model disconnects the water outlet of the water inlet pipe from the water inlet of the drain pipe, thereby creating an empty gap in the water flow channel of the dishwasher drain pipe, which can both drain water downward normally and discharge odors outward. The dishwasher drain water flows through an air gap before continuing to drain, thereby effectively preventing sewer odors from entering the dishwasher. Therefore, the utility model has broad application prospects.
[0042] It should be emphasized that the above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. A dishwasher drain pipe accessory, characterized in that: include: A shell (1), a water inlet pipe (2), and a drain pipe (3); a cavity is provided inside the shell (1); a vent window (4) is provided on the top of the shell (1); the water outlet of the water inlet pipe (2) and the water inlet of the drain pipe (3) are respectively located in the cavity of the shell (1); the water inlet of the water inlet pipe (2) and the water outlet of the drain pipe (3) are respectively located outside the shell (1); the vent window (4) connects the internal cavity of the shell (1) with the external space; The water outlet of the water inlet pipe (2) is suspended from top to bottom toward the water inlet of the drainage pipe (3); The diameter of the water inlet of the drainage pipe (3) is not less than the diameter of the water outlet of the water inlet pipe (2).
2. A dishwasher drain pipe accessory according to claim 1, characterized in that: A movable airtight device (5) is provided at the water outlet of the water inlet pipe (2), which is elastically capable of reciprocatingly opening and closing the fluid passage of the water inlet pipe (2).
3. The dishwasher drain pipe accessory according to claim 2, characterized in that: The movable airtight device (5) comprises: a movable cover plate that flips open and close along a horizontal axis, and a piston plug that reciprocates open and close along a vertical axis.
4. The dishwasher drain pipe accessory according to claim 3, characterized in that: The movable cover includes: a single-axis single-side opening and closing cover, a double-axis split cover, a return spring is provided at the rotating shaft of the movable cover, and the movable cover is a normally closed cover.
5. The dishwasher drain pipe accessory according to claim 1, characterized in that: The water inlet of the drainage pipe (3) is provided with an inverted cone-shaped funnel-shaped bell mouth (6).
6. The dishwasher drain pipe accessory according to claim 1, characterized in that: The ventilation window (4) is covered with a mesh cover (7).
7. The dishwasher drain pipe accessory according to claim 1, characterized in that: An overflow hole (8) is provided at the bottom of the shell (1), the inner end of the overflow hole (8) being connected to the cavity of the shell (1), and the outer end of the overflow hole (8) being connected to the pipe section of the drain pipe (3) located outside the shell (1) through an overflow pipe (9), and the connection node where the overflow pipe (9) is connected to the drain pipe (3) is lower than the height of the overflow hole (8).
8. The dishwasher drain pipe accessory according to claim 1, characterized in that: The outer shell (1) is columnar, and the water outlet section of the water inlet pipe (2) and the water inlet section of the drain pipe (3) are both vertical.
9. A dishwasher drain pipe, characterized in that: The dishwasher drain pipe adopts the dishwasher drain pipe accessory according to any one of claims 1 to 8.
10. A dishwasher, characterized in that: The dishwasher adopts the dishwasher drain pipe according to claim 9.