CN211130935U

CN211130935U - Dish washer and be used for anti-siphon drainage device of dish washer

Info

Publication number: CN211130935U
Application number: CN201921851550.9U
Authority: CN
Inventors: 李一峰; 余水勇
Original assignee: Bear Electrical Appliance Co Ltd
Current assignee: Bear Electrical Appliance Co Ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-07-31
Anticipated expiration: 2029-10-30

Abstract

The utility model discloses a dish washer and anti-siphon drainage device for the same, which comprises a water inlet channel, a water outlet channel and an air inlet channel, wherein the lower end of the water inlet channel is arranged as a water inlet, the lower end of the water outlet channel is arranged as a water outlet, the upper end of the water inlet channel is communicated with the upper end of the water outlet channel at a preset intersection, the water inlet and the water outlet are both positioned below the intersection, and the position of the water outlet is lower than that of the water inlet by a preset height h; the upper tail end of the air inlet channel is provided with an air inlet which is higher than the intersection, the air inlet channel is positioned above the intersection, the intersection is provided with an air inlet groove, and the lower tail end of the air inlet channel is communicated with the air inlet groove. The utility model discloses simple structure not only can be fast with the waste water discharge dish washer of inner bag and can also effectively prevent that the siphon from appearing in the waste water discharge process.

Description

Dish washer and be used for anti-siphon drainage device of dish washer

Technical Field

The utility model relates to a kitchen appliance especially relates to a dish washer and be used for anti-siphon drainage device of dish washer.

Background

Along with the improvement of people's living standard, domestic dish washer is gradually known by people in recent years, and domestic dish washer's small is fit for the family and puts the use, because of it disinfects when having to wash the dishes simultaneously and disinfects in order to do benefit to a lot of advantages such as health, use water conservation environmental protection to deeply receive the consumer and like.

The existing household dish washing machine comprises an inner container and a drainage pipeline connected with the inner container through a drainage pump, waste water is directly drained out of the machine through the drainage pump in the drainage process, the structure can generate backflow during drainage, and water flow is enabled to generate siphon phenomenon so as to suck the waste water back into the inner container again. For solving the drainage siphon problem of dish washer, prior art adds anti-siphon subassembly in drainage pipe, and the design has the respirator intercommunication inner bag of taking the fan in anti-siphon subassembly, lets anti-siphon subassembly's inlet channel and drain line height the same, reduces the probability of taking place the drainage siphon through making the drainage speed that reduces dish washer. The prior art has at least the following defects: firstly, need increase the respirator, not only added spare part quantity, increase product size, still make the overall cost higher, secondly still have a small amount of surplus water to flow back to the inner bag after the dish washer stop work, prevent that the siphon effect is not good enough.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a dish washer and be used for anti-siphon drainage device of dish washer, waste water drainage is smooth and can prevent effectively that waste water drainage process from producing the siphon backward flow.

The utility model provides an anti-siphon drainage device for dish washer, including inhalant canal, exhalant canal and inlet channel, inhalant canal's lower end is established to the water inlet, exhalant canal's lower end is established to the delivery port, and inhalant canal's upper end is linked together at the predetermined junction with exhalant canal's upper end, and water inlet and delivery port all are located the below of junction, and the position of delivery port is than the position of water inlet low preset height h; the upper tail end of the air inlet channel is provided with an air inlet which is higher than the intersection, the air inlet channel is positioned above the intersection, the intersection is provided with an air inlet groove, and the lower tail end of the air inlet channel is communicated with the air inlet groove.

In a preferred embodiment, the water inlet channel comprises a raised convex circular arc pipe which is arranged in a manner of rising and extending from the lower end to the upper end.

In a preferred embodiment, the water inlet channel further comprises a descending convex arc pipe extending in a descending arc from the upper end of the ascending convex arc pipe toward the water outlet, the upper end of the descending convex arc pipe is communicated with the upper end of the ascending convex arc pipe, and the lower end of the descending convex arc pipe is communicated with the upper end of the water outlet channel.

In a preferred embodiment, the air inlet groove is arranged on the top pipe wall of the descending convex circular arc pipeline.

In a preferred embodiment, the water outlet channel is a vertically arranged straight pipe or an obliquely arranged straight pipe.

In a preferred embodiment, the anti-siphon drainage device comprises a lower cover and an upper cover hermetically connected to the lower cover, and the water inlet channel, the water outlet channel and the air inlet channel are integrally arranged on the lower cover.

In a preferred embodiment, the lower end of the water inlet channel is provided with a water inlet joint, the lower end of the water outlet channel is provided with a water outlet joint, and the position of the water outlet joint is lower than that of the water inlet joint.

In a preferred embodiment, the upper end of the air inlet channel is provided with a detachable connected air inlet joint, an air inlet hole communicated with the air inlet channel is arranged in the air inlet joint, and the air inlet joint is in an inverted L shape and comprises a joint lower part detachably connected with the upper end of the air inlet channel and a joint upper part transversely connected with the joint lower part 2.

In a preferred embodiment, the effective cross-sectional area S1 of the water inlet, the effective cross-sectional area S2 of the water outlet and the effective cross-sectional area S3 of the air inlet satisfy S1 ≧ S2 > S3.

The utility model also discloses a dish washer, include the inner bag at least, through drain pipe that drain pump and inner bag link to each other and be used for the waste water discharge dish washer's in the inner bag waste pipe, its characterized in that, dish washer still includes a siphon drainage device is prevented for dish washer, wherein, the water inlet is linked together with the drain pipe, and the delivery port is linked together with the waste pipe.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses an anti-siphon drainage device, the position that is higher than the delivery port through the position that sets up the water inlet is nevertheless less than the position of intersection of water passageway and exhalant canal, sets up the air inlet duct in the intersection and communicates the inlet channel who is located the intersection top, not only can be fast with the waste water discharge dish washer of inner bag and can also effectively prevent that the siphon from appearing in the waste water discharge in-process. In addition, the anti-siphon drainage device is simple in overall structure, low in manufacturing cost and convenient to assemble and maintain.

Drawings

FIG. 1 is a schematic view of a connection structure of an inner tub and an anti-siphon drainage device in a dishwasher.

Fig. 2 is a perspective view of the anti-siphon drainage apparatus.

Fig. 3 is a schematic view of the internal structure of the anti-siphon drainage apparatus.

Fig. 4 is a schematic view of the anti-siphon drainage apparatus with an upper cover removed or partially cut away.

Fig. 5 is a schematic structural view of the intake joint.

Fig. 6 is a partial structural view of the anti-siphon drain device when the air inlet joint is not shown.

In the drawings, arrows indicate the flow direction of water or air.

Detailed Description

To further clarify the technical solutions and effects adopted by the present application to achieve the intended purpose, the following detailed description is given with reference to the accompanying drawings and preferred embodiments according to the present application. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The utility model discloses in mention the height or low, upper and lower, top or below of position, all use the position of dish washer under normal use state as the benchmark to compare.

As shown in fig. 1, the dishwasher includes at least an inner tub 9, a drain pipe 8 connected to the inner tub 9 by a drain pump (not shown in fig. 1), a waste water pipe 7 for draining waste water in the inner tub 9 out of the dishwasher, and an anti-siphon drain device connected between the drain pipe 8 and the waste water pipe 7, and the anti-siphon drain device prevents residual waste water in the waste water pipe 7 from siphoning back into the inner tub 9 when the dishwasher is stopped.

As further shown in fig. 2-4, the anti-siphon drainage device includes a water inlet channel 12, a water outlet channel 22 and an air inlet channel 32, wherein the lower end of the water inlet channel 12 is provided with a water inlet communicated with the drain pipe 8, the upper end of the water inlet channel 12 is communicated with the upper end of the water outlet channel 22 at a preset intersection, the lower end of the water outlet channel 22 is provided with a water outlet communicated with the waste pipe 7, and the position of the water inlet is higher than the position of the water outlet but lower than the position of the intersection of the water outlet channel 22 and the water outlet channel 22; an air inlet groove 23 is arranged at the intersection of the water outlet passage 22 and the water outlet passage 22, the lower tail end of the air inlet passage 32 is communicated with the air inlet groove 23, the upper tail end of the air inlet passage 32 is provided with an air inlet, the position of the air inlet is higher than that of the air inlet groove 23, namely, the air inlet passage 32 is positioned above the intersection of the water inlet passage 12 and the water outlet passage 22, the water inlet and the water outlet are both positioned below the intersection, and the position of the water outlet is lower than that of the water inlet.

As shown in fig. 3, the water inlet passage 12 and the water outlet passage 22 are both located below the junction, so that the water inlet and the water outlet are both located below the junction. The water inlet is positioned at the height H1 below the intersection, the water outlet of the water outlet channel 22 is positioned at the height H2 below the intersection, and H2-H1= H, H is larger than 0, and H is preferably 0.5-10cm by taking the water inlet channel 12 and the water outlet channel 22 as a reference. Namely, the position of the water outlet channel 22 is lower than the position of the water inlet channel 22 by a preset height h. The utility model discloses a position that sets up the delivery port is low than the position of water inlet and is preset high h, lets waste water need overcome this at least and preset the pressure differential that high h brought for waste water and just probably take place to flow back to the water inlet from the delivery port to be favorable to preventing that waste water from taking place to flow back.

Therefore, under the action of the drainage pump, the wastewater in the inner container 9 enters the water inlet channel 12 from the water inlet at a certain pressure, is guided upwards along the water inlet channel 12 to the intersection of the water inlet channel 12 and the water outlet channel 22, then enters the water outlet channel 22, and flows into the wastewater pipe 7 through the water outlet of the water outlet channel 22 to be discharged; because the intersection of the water inlet passage 12 and the water outlet passage 22 is provided with the air inlet groove 23 communicated with the air inlet passage 32, the pressure of the intersection of the water inlet passage 12 and the water outlet passage 22 is balanced with the external atmospheric pressure by the external atmosphere through the air inlet passage 32 and the air inlet groove 23, thereby avoiding the siphon phenomenon.

In order to facilitate the communication between the drainage pipe 8 and the waste water pipe 7, the lower end of the water inlet channel 12 is provided with a water inlet joint 11 which is communicated with the drainage pipe 8 through the water inlet joint 11 so as to be convenient for disassembly and assembly, and the lower end of the water outlet channel 22 is provided with a water outlet joint 21 which is communicated with the waste water pipe 7 through the water outlet joint 21 so as to be convenient for disassembly and assembly. At this time, the position of the water outlet joint 21 is lower than that of the water inlet joint 11, so that the wastewater can be discharged from the wastewater pipe 7 more smoothly through the anti-siphon water discharge device.

The inlet channel 12 mainly functions to guide the waste water in the drain pipe 8 to the outlet channel 22. In order to reduce the resistance of the water inlet channel 12 to the wastewater and enable the wastewater to flow to the water outlet channel 22 more smoothly, the water inlet channel 12 is preferably an arc-shaped channel, which may be a convex arc-shaped channel or a concave arc-shaped channel. Preferably, the water inlet passage 12 includes a raised convex circular arc pipe 121 extending from the lower end to the upper end. In addition, the lower end of the arc pipe is fixedly connected to the water inlet joint 11, and the upper end of the arc pipe is communicated with the water outlet channel 22, in order to further enable the wastewater to flow more smoothly from the upper end of the water inlet channel 12 to the water outlet channel 22, in a preferred embodiment, the water inlet channel 12 further comprises a descending convex arc pipe 122 extending in a descending arc shape from the upper end of the ascending convex arc pipe 121 toward the water outlet, the upper end of the descending convex arc pipe 122 is communicated with the upper end of the ascending convex arc pipe 121, and the lower end of the descending convex arc pipe 122 is communicated with the upper end of the water outlet channel 22. The intake duct 23 is provided in the ceiling wall 123 of the descending convex arc duct 122. Thus, after being guided by the ascending convex arc pipeline 121 with small resistance, the wastewater smoothly enters the water outlet channel 22 along the descending convex arc pipeline 122 under the action of gravity, the whole process is smooth, the resistance is small, and the wastewater is favorably discharged out of the dishwasher smoothly.

The upper end of the water outlet channel 22 is higher than the water outlet at the lower end, so that the wastewater can flow from the water outlet channel 22 to the wastewater pipe 7. The water outlet channel 22 preferably adopts a straight pipe, which can be a vertically arranged straight pipe or an obliquely arranged straight pipe, and the straight pipe is beneficial to the smooth flow of the wastewater into the wastewater pipe 7.

In addition, the effective cross-sectional area S1 of the inlet port is one of the factors that determine the amount of wastewater that can flow from the inlet port per unit time, the effective cross-sectional area S2 of the outlet port is one of the factors that determine the amount of wastewater that can flow from the outlet port per unit time, and the effective cross-sectional area S3 of the inlet port is one of the factors that determine the amount of air that can enter the intake passage 32 per unit time. In one embodiment, the effective cross-sectional area S1 of the water inlet is not smaller than the effective cross-sectional area S2 of the water outlet, and the effective cross-sectional area S3 of the air inlet is smaller than the effective cross-sectional area S2 of the water outlet, i.e., S1 is more than or equal to S2 and more than S3. This arrangement allows the air pressure in the inlet passage 32 to be small relative to the air pressure in the inlet passage 12 to balance the air pressure, allowing the waste water to drain more smoothly and more quickly through the anti-siphon drain without causing siphon back flow of the waste water.

The inlet channel 12, the outlet channel 22 and the inlet channel 32 are integrated to ensure reliable connection of the inlet channel 12, the outlet channel 22 and the inlet channel 32, and of course, the inlet channel 12, the outlet channel 22 and the inlet channel 32 may be separated. For example, the anti-siphon drainage device includes a lower cover and an upper cover, the lower cover is provided with the water inlet channel 12, the water outlet channel 22 and the air inlet channel 32, and the upper cover is hermetically fixed on the lower cover by using a technique such as thermal welding. Wherein, the outer side of the lower cover is provided with a plurality of fixing parts 4, and the anti-siphon drainage device can be integrally assembled on the outer side of the inner container 9 by penetrating the fixing parts 4 through screws. The structure is favorable for reducing the number of moulds of the anti-siphon drainage device, reducing the manufacturing cost and also being favorable for assembling or disassembling the anti-siphon drainage device for maintenance.

An air inlet at the upper tail end of the air inlet channel 32 is communicated with an air inlet window arranged on one side plate of the shell of the dishwasher, so that external air enters the air inlet channel 32 from the air inlet window and the air inlet. As shown in fig. 5 and 6, an air inlet joint 31 may be further disposed at the air inlet to facilitate communication between the upper end of the air inlet channel 32 and the air inlet window. The air inlet connector 31 is arranged at the upper end of the air inlet channel 32, and the air inlet connector 31 and the air inlet channel 32 are of an integral structure or a split structure.

In one embodiment, the air inlet connector 31 is detachably mounted to the upper end of the air inlet passage 32. The periphery of the upper end of the air inlet channel 32 is provided with a lower step portion 321, the air inlet connector 31 is internally provided with an air inlet 311 communicated with the recent channel 32, the lower end of the air inlet connector 31 is provided with an upper step portion 314, and the upper step portion 314 is sleeved with the lower step portion 321, so that the air inlet connector 31 is detachably arranged at the upper end of the air inlet channel 32. Furthermore, one of the lower end of the air inlet connector 31 and the upper end of the air inlet channel 32 is provided with a locking protrusion 322, and the other is correspondingly provided with a locking buckle 315, so that the locking buckle 322 is locked in the locking buckle 315 to improve the reliability of the detachable connection structure between the air inlet connector 31 and the air inlet channel 32.

In one embodiment, the air inlet connector 31 is of an inverted L type, and the air inlet connector 31 includes a connector lower portion 312 detachably connected to the upper end of the air inlet channel 32 and a connector upper portion 313 transversely connected to the connector lower portion 312, and is conveniently communicated with an air inlet window on a side plate of a housing of the dishwasher by more conveniently connecting the connector upper portion 313, wherein the upper stepped portion 314 and the snap 315 are both provided on the connector lower portion 312.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An anti-siphon drainage device for a dish washing machine comprises a water inlet channel, a water outlet channel and an air inlet channel, and is characterized in that the lower tail end of the water inlet channel is provided with a water inlet, the lower tail end of the water outlet channel is provided with a water outlet, the upper tail end of the water inlet channel is communicated with the upper tail end of the water outlet channel at a preset intersection, the water inlet and the water outlet are both positioned below the intersection, and the position of the water outlet is lower than that of the water inlet by a preset height h; the upper tail end of the air inlet channel is provided with an air inlet which is higher than the intersection, the air inlet channel is positioned above the intersection, the intersection is provided with an air inlet groove, and the lower tail end of the air inlet channel is communicated with the air inlet groove.

2. The anti-siphon drain apparatus for a dishwasher of claim 1, wherein the water inlet passage comprises a rising convex circular arc pipe which is formed to extend from a lower end to an upper end in a rising manner.

3. The anti-siphon drain apparatus for a dish washer according to claim 2, wherein the water inlet passage further comprises a descending convex arc pipe extended in a descending arc shape from an upper end of the ascending convex arc pipe toward the water outlet port, an upper end of the descending convex arc pipe communicates with an upper end of the ascending convex arc pipe, and a lower end of the descending convex arc pipe communicates with an upper end of the water outlet passage.

4. The anti-siphon drain apparatus for a dish washer according to claim 3, wherein the air inlet groove is provided on a top pipe wall of the descending convex circular arc pipe.

5. The anti-siphon drain apparatus for a dish washer according to claim 1, wherein the water outlet passage is a straight pipe vertically disposed or a straight pipe obliquely disposed.

6. The anti-siphon drain apparatus for the dish washer according to claim 1, wherein the anti-siphon drain apparatus comprises a lower cover and an upper cover hermetically connected to the lower cover, and the water inlet passage, the water outlet passage and the air inlet passage are integrally provided on the lower cover.

7. The anti-siphon drain apparatus for dish washer according to claim 1, wherein the lower end of the water inlet channel is provided with a water inlet joint, the lower end of the water outlet channel is provided with a water outlet joint, and the position of the water outlet joint is lower than that of the water inlet joint.

8. The anti-siphon drain apparatus for dish washer according to claim 1, wherein the upper end of the air inlet channel is provided with an air inlet joint detachably connected, the air inlet joint is internally provided with an air inlet hole communicated with the air inlet channel, the air inlet joint is reverse L type and comprises a joint lower part detachably connected with the upper end of the air inlet channel and a joint upper part transversely connected with the joint lower part 2.

9. The anti-siphon drain apparatus for dish washer according to any one of claims 1 to 8, wherein the effective cross sectional area of the water inlet S1, the effective cross sectional area of the water outlet S2 and the effective cross sectional area of the air inlet S3 satisfy S1 ≧ S2 > S3.

10. A dishwasher comprising at least an inner tub, a drain pipe connected to the inner tub by a drain pump, and a waste pipe for discharging waste water in the inner tub out of the dishwasher, characterized in that the dishwasher further comprises an anti-siphon drain apparatus for a dishwasher as claimed in any one of claims 1 to 9, wherein the water inlet is communicated with the drain pipe and the water outlet is communicated with the waste pipe.