WO2022237134A1 - Residual water removal apparatus and dishwasher - Google Patents

Abstract

A residual water removal apparatus and a dishwasher, the residual water removal apparatus (10) comprising a water intake main body (100) and a water drainage main body (200), a first channel (110) being formed in the water intake main body (100); the water drainage main body (200) and the water intake main body (100) are docked together, and a second channel (210) is formed in the water drainage main body (200); the first channel (110) and the second channel (210) are in communication with one another, the first channel (110) having a communication port in communication with the second channel (210), the area of the communication port being no greater than the cross-sectional area of the remaining positions of the first channel (110) and the second channel (210), at least part of the first channel (110) having a gradually decreasing cross-section in the direction towards the second channel (210), and the point at which the first channel (110) and the second channel (210) are in communication being in communication with a residual water outlet by means of a drainage channel (120); the dishwasher comprises a drainage apparatus and the residual water removal apparatus (10). Residual water remaining in the household appliance can be quickly and effectively removed, preventing the breeding of bacteria and production of odours, and enhancing the user experience.

Description

Residual water removal device and dishwasher

This application claims the priority of Chinese patent applications with application numbers 202110520920.6 and 202121015411.X filed on May 12, 2021, the entire contents of which are incorporated in this application by reference.

technical field

The present application relates to the technical field of household appliances, in particular to a device for removing residual water and a dishwasher.

Background technique

With the continuous improvement of people's living standards, people have higher and higher requirements for the drying performance of household dishwashers. At present, all dishwashers on the market have the problem of residual water, that is, the water in the water cup at the bottom of the dishwasher cannot Completely drain the outside of the dishwasher. If the residual water stays at the bottom of the dishwasher cup for a long time, it will easily cause bacteria to grow inside the dishwasher and produce peculiar smell, which will seriously affect the user experience.

At present, there is a residual water removal device designed using Venturi theory. One end of the device is connected to tap water with pressure, and the other end is connected to the drain pipe. The middle position is connected to the residual water of the water cup. Negative pressure, the negative pressure sucks residual water into the cavity, and the residual water and tap water are discharged out of the dishwasher through the drain pipe. The Venturi device of the existing residual water removal device is integrally formed, which makes the manufacturing process of the residual water removal device complicated and the manufacturing cost is high, and the integrally formed Venturi device is difficult to meet the efficiency requirements of residual water removal.

The above content is only used to assist in understanding the technical solution of the invention, and does not mean that the above content is admitted as prior art.

technical problem

The main purpose of this application is to propose a device for removing residual water, aiming to solve at least one of the above-mentioned technical problems.

technical solution

In order to achieve the above purpose, the residual water removal device proposed by this application includes a water inlet body and a drainage body;

A first channel is formed in the water inlet body;

The drainage body is docked with the water inlet body, and a second channel is formed in the drainage body;

Wherein, the first channel communicates with the second channel, and the first channel has a communication port that communicates with the second channel, and the area of the communication port is not larger than that of the first channel and the second channel. The cross-sectional area of the remaining positions of the two passages, at least part of the first passage is set in a cross-section gradually decreasing toward the direction of the second passage, and the connection between the first passage and the second passage passes through The drainage channel communicates with the residual water outlet.

In one embodiment, one of the water inlet body and the drainage body is provided with a central insertion shaft, and the other is provided with a central insertion hole adapted to the central insertion shaft.

In one embodiment, the periphery of the junction between the water inlet body and the drainage body is covered with a first sealing layer.

In one embodiment, the first sealing layer is injection-molded on the periphery of the connection between the water inlet body and the drainage body.

In one embodiment, one end of the water inlet body adjacent to the drainage body is provided with a first limiting portion, and the end of the drainage body adjacent to the water inlet body is provided with a second limiting portion, and the first The sealing layer includes a first matching portion adapted to the first limiting portion and the second limiting portion.

In one embodiment, the first limiting portion includes a first annular groove opened on the peripheral wall of the water inlet body, and the second limiting portion includes a second annular groove opened on the peripheral wall of the drainage body. groove, the first matching portion includes a first annular boss embedded in the first annular groove, and a second annular boss embedded in the second annular groove, the first annular boss embedded in the second annular groove, A sealing layer further includes a first sealing ring connecting the first annular boss and the second annular boss.

In one embodiment, the first sealing layer is made of plastic material.

In one embodiment, the device for removing residual water further includes a water inlet joint, the water inlet joint is sealingly connected to the end of the water inlet body away from the drain body, and a water inlet joint is formed in the water inlet joint. The water inlet channel communicated with the first channel, and a first one-way valve is arranged in the water inlet channel, and the first one-way valve is unidirectionally connected from the water inlet channel to the first channel.

In one embodiment, the end surface of one of the water inlet joint and the water inlet body is provided with a first limiting column, and the other is provided with a first limiting groove, and the first limiting column and the The first limiting slots cooperate with each other.

In one embodiment, the water inlet joint and the water inlet body are butted with each other, and the periphery of the joint between the water inlet body and the water inlet joint is covered with a second sealing layer.

In one embodiment, the second sealing layer is injection-molded on the periphery of the connection between the water inlet body and the water inlet connector.

In one embodiment, the device for removing residual water further includes a drain joint, the drain joint is sealingly connected to the end of the drain main body away from the water inlet main body, and the second channel is formed in the drain joint. A connected drainage channel, a second one-way valve is arranged in the drainage channel, and the second one-way valve is unidirectionally connected from the second channel to the drainage channel.

In one embodiment, the drainage joint and the drainage main body are butted with each other, and the periphery of the junction of the drainage main body and the drainage joint is covered with a third sealing layer.

In one embodiment, the third sealing layer is injection-molded on the periphery of the connection between the drainage main body and the drainage connector.

In one embodiment, the device for removing residual water further includes a throat, the throat is connected to the water inlet body, and a throat communicating with the water outlet end of the first channel is formed in the throat, the The cross-sectional area of the throat is smaller than the cross-sectional area of the first channel and the second channel, and an annular cavity is formed on the periphery of the throat, and the throat communicates with the second channel through the annular cavity , the annular cavity communicates with the drainage channel.

In one embodiment, the annular chamber is disposed in the water inlet body; and/or, the annular chamber includes a tapered section, and the inner diameter of the tapered section is from the first channel to the second channel. The channel gradually decreases the setting.

The present application also proposes a dishwasher, including a drainage device and a residual water removal device:

The drainage device includes a water cup, and the water cup has a water inlet and a residual water outlet;

The residual water removal device includes a water inlet body and a drainage body;

A first channel is formed in the water inlet body;

The drainage body is docked with the water inlet body, and a second channel is formed in the drainage body;

Wherein, the first channel communicates with the second channel, and the first channel has a communication port that communicates with the second channel, and the area of the communication port is not larger than that of the first channel and the second channel. The cross-sectional area of the remaining positions of the two passages, at least part of the first passage is set in a cross-section gradually decreasing toward the direction of the second passage, and the connection between the first passage and the second passage passes through The drainage channel communicates with the residual water outlet. ;

The water inlet body of the residual water removal device communicates with the water inlet, and the connection between the first channel and the second channel of the residual water removal device communicates with the residual water outlet through a drainage channel.

Beneficial effect

The residual water removal device of the present application forms a Venturi tube structure by making the first channel of the water inlet body and the second channel of the water discharge body. By making the first channel connected to tap water with pressure, and the second channel connected to the drain pipe, the connection between the first channel and the second channel communicates with the residual water outlet through the drainage channel, then when the tap water flows from the first channel to the second channel , a negative pressure will be generated at the connection between the first channel and the second channel, and the negative pressure will suck the residual water flowing out of the residual water outlet into the connection between the first channel and the second channel through the drainage channel, and the residual water and tap water will pass through the second channel to the drain for discharge to the outside of the appliance. In this way, the residual water retained in the household appliance can be quickly and effectively removed completely, preventing bacteria from growing, producing peculiar smell, etc., and improving user experience. And compared with the structure of water pump combined with heater to remove residual water, this device has a simple structure, no risk of water pump clogging, and higher efficiency and safety of removing residual water.

In addition, by setting the water inlet body and the drainage body separately, on the one hand, it can reduce the difficulty of integrally forming the water inlet body and the drainage body, simplify the molding process, and reduce the manufacturing cost; on the other hand, the water inlet body and/or the drainage body The internal structure can be designed to be more complicated. By designing the internal passages of the water inlet body and the drainage body, and then through structural design (such as setting an annular cavity at the connection between the water inlet body and the drainage body), the residual water can be removed. The suction effect of the device is better, the capacity of the residual water removal device for residual water is increased, and the efficiency and effect of the residual water removal device for absorbing residual water are effectively improved.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to the structures shown in these drawings without creative effort.

Fig. 1 is the schematic structural view of an embodiment of the residual water removal device of the present application;

Fig. 2 is a partial enlarged view of place A in Fig. 1;

Fig. 3 is a schematic diagram of an exploded structure of the device for removing residual water in Fig. 1;

Fig. 4 is a schematic structural view of the water inlet body and the drainage body part in Fig. 3;

Fig. 5 is a schematic structural view of the water inlet joint part in Fig. 3;

FIG. 6 is a schematic structural view of the drain joint part in FIG. 3 .

Explanation of reference numbers:

label name label name label name 10 Residual water removal device 210 second channel 510 first sealing layer 100 water body 220 The second limiting part 511 First coordination department 110 first channel 230 center shaft 512 first sealing ring 111 water inlet 240 The sixth limit 520 second sealing layer 112 Outlet 250 second limit post 521 Second Coordinating Department 120 drainage channel 300 Inlet connector 522 second sealing ring 130 The first limit 310 Inlet channel 530 third sealing layer 140 center jack 320 The third limit 531 The third coordination department 150 The fourth limit 330 first limit slot 532 third sealing ring 160 first limit post 400 Drain connector 600 first check valve 170 annular cavity 410 drainage channel 700 second check valve 171 Taper 420 The fifth limit 800 throat 200 Drainage subject 430 Second limit slot 810 Throat

The realization, functional features and advantages of the present application will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Embodiments of the present invention

It should be noted that if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for description purposes, and should not be interpreted as instructions or Implying their relative importance or implying the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the meaning of "and/or" appearing in the whole text includes three parallel schemes, taking "A and/or B" as an example, including scheme A, scheme B, or schemes that both A and B satisfy.

This application proposes a device for removing residual water, which is used for household appliances. The household appliance can be an appliance that needs to remove residual water, such as a dishwasher and a washing machine.

In the embodiment of the present application, as shown in FIGS. 1 to 3 , the residual water removal device 10 includes a water inlet body 100 and a water discharge body 200 . A first channel 110 is formed in the water inlet body 100 ; the drain body 200 and the water inlet body 100 are butted with each other, and a second channel 210 is formed in the drain body 200 . Wherein, the first channel 110 communicates with the second channel 210, the first channel 110 has a communicating port communicating with the second channel 210, and the area of the communicating port is not greater than the cross-sectional area of the first channel 110 and the rest of the second channel 210 , at least part of the first channel 110 is provided with a cross-section gradually decreasing toward the direction of the second channel 210 , and the connection between the first channel 110 and the second channel 210 communicates with the residual water outlet through the drainage channel 120 .

In this embodiment, the water inlet body 100 is used to communicate with the water inlet pipe. The water inlet body 100 can be directly connected with the water inlet pipe, or can be indirectly connected with the water inlet pipe through structures such as the water inlet joint 300 . The drain main body 200 is used to communicate with the drain pipe, and the drain main body 200 may directly communicate with the drain pipe, or indirectly communicate with the drain pipe through structures such as the drain joint 400 . The drain pipe may be the drain pipe connected to the drain port of the household appliance, or may be an additional drain pipe. The drainage channel 120 may be directly connected to the residual water outlet, or may be connected to the residual water outlet through a structure such as a drainage tube. The drainage channel 120 communicates with the junction of the first channel 110 and the second channel 210 , and the drainage channel 120 can be formed by the lumen of the drainage tube, or can be a channel opened in the water inlet joint 300 or the drainage joint 400 . Optionally, for the convenience of processing, the water inlet body 100 and the drainage body 200 are arranged in a tubular shape as a whole. Of course, the water inlet body 100 and the drainage body 200 can also be set in other shapes, and the shapes of the water inlet body 100 and the drainage body 200 can be selected and designed according to actual needs, and are not specifically limited here.

The water inlet body 100 and the drainage body 200 are butted against each other, specifically, the ends of the water inlet body 100 and the drainage body 200 are opposite and connected. Then, the water inlet body 100 and the drainage body 200 can be inserted into each other by setting a plugging structure or a limiting structure. Of course, in some embodiments, the end surfaces of the water inlet body 100 and the drainage body 200 may also be butted with each other. By setting the water inlet body 100 and the drainage body 200 separately, on the one hand, it can reduce the difficulty of integrally forming the water inlet body 100 and the drainage body 200, simplify the molding process, and reduce the manufacturing cost; on the other hand, because the water inlet body 100 and/or Or the internal structure of the drainage body 200 can be designed to be more complicated, then the internal channel of the water inlet body 100 and the drainage body 200 can be designed, and then the structure can be designed (for example, the connection between the water inlet body 100 and the drainage body 200 can be set ring cavity), which makes the suction effect of the residual water removal device better, increases the capacity of the residual water removal device 10 for residual water, and effectively improves the efficiency and effect of the residual water removal device 10 in absorbing residual water.

The first channel 110 is arranged through the water inlet body 100 along the axial direction of the water inlet body 100 , and the second channel 210 is arranged through the drain body 200 along the axial direction of the drain body 200 . In order to reduce fluid resistance, optionally, the cross sections of the first channel 110 and the second channel 210 are arranged in a circular shape, and the first channel 110 and the second channel 210 are arranged coaxially. The first channel 110 and the second channel 210 communicate with each other, so that the first channel 110 and the second channel 210 can be connected directly, and the connection between the first channel 110 and the second channel 210 is a throat. It is also possible to make the first channel 110 communicate with the second channel 210 through the throat 810 . The throat 810 can be formed in the water inlet body 100 or in the drainage body 200 .

The water inlet end 111 of the first channel 110 is the end away from the second channel 210 , and the water outlet end 112 of the first channel 110 is the end close to the second channel 210 . By making the area of the communication port of the first passage 110 smaller than the cross-sectional areas of the first passage 110 and the rest of the second passage 210, the cross-sectional area of the first passage 110 gradually decreases from its water inlet 111 to the second passage 210 If set, the first channel 110 and the second channel 210 form a Venturi tube structure. The cross-sectional area of the second channel 210 can be gradually increased from the end close to the first channel 110 to the end away from the first channel 110 , or the cross-sectional area of the first channel 110 can be equal in the axial direction. By making the first channel 110 connected to the tap water with pressure, the second channel 210 connected to the drain pipe, and the connection between the first channel 110 and the second channel 210 is communicated with the residual water outlet through the drainage channel 120, then when the tap water flows from the first channel When 110 flows to the second channel 210, a negative pressure will be generated at the connection between the first channel 110 and the second channel 210, and the negative pressure will suck the residual water flowing out of the residual water outlet into the first channel 110 and the second channel 210 through the drainage channel 120 The residual water and tap water flow to the drain pipe through the second channel 210 to be discharged to the outside of the household appliance. In this way, the residual water remaining in the household appliance can be quickly and effectively removed to avoid the breeding of bacteria, the generation of peculiar smell, etc., and improve the user experience. And compared with the structure of water pump combined with heater to remove residual water, this device has a simple structure, no risk of water pump clogging, and higher efficiency and safety of removing residual water.

The residual water removal device 10 of the present application makes the first channel 110 of the water inlet body 100 and the second channel 210 of the drain body 200 form a Venturi tube structure. By making the first channel 110 connected to the tap water with pressure, the second channel 210 connected to the drain pipe, and the connection between the first channel 110 and the second channel 210 is communicated with the residual water outlet through the drainage channel 120, then when the tap water flows from the first channel When 110 flows to the second channel 210, a negative pressure will be generated at the connection between the first channel 110 and the second channel 210, and the negative pressure will suck the residual water flowing out of the residual water outlet into the first channel 110 and the second channel 210 through the drainage channel 120 The residual water and tap water flow to the drain pipe through the second channel 210 to be discharged to the outside of the household appliance. In this way, the residual water remaining in the household appliance can be quickly and effectively removed to avoid the breeding of bacteria, the generation of peculiar smell, etc., and improve the user experience. And compared with the structure of water pump combined with heater to remove residual water, this device has a simple structure, no risk of water pump clogging, and higher efficiency and safety of removing residual water.

In addition, by setting the water inlet body 100 and the drainage body 200 separately, on the one hand, it can reduce the difficulty of forming the water inlet body 100 and the drainage body 200 integrally, simplify the molding process, and further reduce the manufacturing cost; on the other hand, because the water inlet body 100 And/or the internal structure of the drainage body 200 can be designed to be more complicated, then the internal channel of the water inlet body 100 and the drainage body 200 can be designed, and then the structural design (such as making the connection of the water inlet body 100 and the drainage body 200 An annular cavity is provided at the position), so that the suction effect of the residual water removal device is better, the capacity of the residual water removal device 10 for residual water is increased, and the efficiency and effect of the residual water removal device 10 for absorbing residual water are effectively improved.

In one embodiment, as shown in FIG. 1 to FIG. 4 , one of the water inlet body 100 and the drainage body 200 is provided with a central insertion shaft 230 , and the other is provided with a central insertion hole adapted to the central insertion shaft 230 140.

In this embodiment, specifically, the central insertion shaft 230 is disposed at the middle of the end surface of one of the water inlet body 100 and the drainage body 200 . Then, through the cooperation of the central insertion shaft 230 and the central jack 140, the water inlet body 100 and the drainage body 200 are pre-fixed, and the coaxiality of the water inlet body 100 and the drainage body 200 can be ensured, thereby making it easier to install the water inlet body. The periphery of the junction between the drain body 100 and the drainage body 200 is coated with a first sealing layer 510 . Optionally, the central inserting shaft 230 is closely fitted with the central inserting hole 140 , which can ensure the stability of the connection when the water inlet body 100 and the drainage body 200 are pre-fixed.

In one embodiment, the first sealing layer 510 is coated on the periphery of the connection between the water inlet body 100 and the drainage body 200 .

The periphery of the junction of the water inlet body 100 and the drainage body 200 is covered with a first sealing layer 510, and the first sealing layer 510 can be embedded in the periphery of the junction of the water inlet body 100 and the drainage body 200, or can be bonded to the inlet body. The periphery of the junction between the water body 100 and the drainage body 200 can also be injection molded on the periphery of the junction of the water inlet body 100 and the drainage body 200 . Here, there is no limitation on how the first sealing layer 510 is connected to the water inlet body 100 and the drainage body 200, and it is only necessary to make the first sealing layer 510 cover the periphery of the joint between the water inlet body 100 and the drainage body 200 to seal The junction of the water inlet body 100 and the drainage body 200 is sufficient. The material of the first sealing layer 510 can be selected and limited according to requirements. For example, the first sealing layer 510 can be made of rubber material. The periphery of the joint between the water main body 100 and the drainage main body 200 . The first sealing layer 510 can also be made of plastic material, and at this time the first sealing layer 510 can be coated on the periphery of the junction between the water inlet body 100 and the drainage body 200 by injection molding.

In addition, the first sealing layer 510 is coated on the periphery of the junction of the water inlet body 100 and the drainage body 200 . While sealing the junction with the drainage body 200, it also plays a role in connecting the water inlet body 100 and the drainage body 200, so that the connection between the water inlet body 100 and the drainage body 200 has high compressive strength, and can still maintain sealing under high pressure No water leakage; and compared with the ultrasonic welding of the water inlet body 100 and the drainage body 200, it is easier to ensure the consistency of the connection between the water inlet body 100 and the drainage body 200, reduce the risk of water seepage, and then improve the overall performance of the residual water removal device 10 Sealing effect.

Further, please refer to FIG. 1 and FIG. 2 , the first sealing layer 510 is injection-molded on the periphery of the connection between the water inlet body 100 and the drainage body 200 .

In this embodiment, the first sealing layer 510 is injection-molded on the periphery of the connection between the water inlet body 100 and the drainage body 200 . That is, encapsulation treatment is performed on the junction of the water inlet body 100 and the drainage body 200 . The first sealing layer 510 is specifically a rubberized ring. Optionally, the first sealing layer 510 is made of plastic material. Specifically, the plastic material may be polypropylene (PP), polyethylene (PE) and the like. The thickness and width of the first sealing layer 510 can be selected and designed according to actual requirements, and are not specifically limited here. By injecting the first sealing layer 510 on the periphery of the junction of the water inlet body 100 and the drainage body 200, not only the sealing of the junction of the water inlet body 100 and the drainage body 200 is realized, but also the water inlet body 100 and the drainage body 200 pass through the injection molding process. If they are connected to each other, there is no need to set up other structures to connect the water inlet body 100 and the drainage body 200, so the sealing performance is good and the connection reliability is good. That is to say, the connection between the water inlet body 100 and the drain body 200 has a high compressive strength, and can still be sealed and watertight under high pressure. Compared with making the water inlet body 100 and the drainage body 200 sealed by ordinary sealing rings, the device is simple and reliable, can reduce the number of parts of the device, simplify the assembly process, and reduce the risk of water leakage during long-term use; and compared to making The water inlet body 100 and the drainage body 200 are ultrasonically welded, which makes it easier to ensure the consistency of the connection between the water inlet body 100 and the drainage body 200 and reduce the risk of water seepage.

In one embodiment, as shown in FIG. 2 , the end of the water inlet body 100 adjacent to the drainage body 200 is provided with a first limiting portion 130 , and the end of the drainage body 200 adjacent to the water inlet body 100 is provided with a second limiting portion 220 . The first sealing layer 510 includes a first matching portion 511 adapted to the first limiting portion 130 and the second limiting portion 220 .

In this embodiment, the first limiting portion 130 may specifically include a groove and/or a protrusion provided on a peripheral wall of the water inlet body 100 . The number of the groove and the protrusion can be one or more. A plurality of grooves or protrusions may be arranged at intervals along the axial direction of the water inlet body 100 , or may be arranged at intervals along the circumference of the water inlet body 100 . Similarly, the second limiting portion 220 may specifically include grooves and/or protrusions provided on the peripheral wall of the drainage body 200 . The number of the groove and the protrusion can be one or more. A plurality of grooves or protrusions can be arranged at intervals along the axial direction of the drainage body 200 , and can also be arranged at intervals along the circumference of the drainage body 200 . Then the first matching portion 511 specifically includes a groove/protrusion adapted to the protrusion/groove. By setting the first limiting part 130 on the water inlet body 100 and the second limiting part 220 on the drainage body 200, the first sealing layer 510 includes a The first matching part 511, on the one hand, facilitates the injection molding of the first sealing layer 510 at the junction of the water inlet body 100 and the drainage body 200; The contact area ensures the tightness and stability of the connection between the first sealing layer 510 and the water inlet body 100 and the drainage body 200. At the same time, the first limiting part 130, the second limiting part 220 and the first matching part 511 form a structural seal, which can be obtained from Multi-dimensional sealing is performed, thereby improving the sealing effect of the first sealing layer 510 on the water inlet body 100 and the drainage body 200 .

Further, please refer to FIG. 1 to FIG. 4 , the first limiting portion 130 includes a first annular groove opened on the peripheral wall of the water inlet body 100 , and the second limiting portion 220 includes a second annular groove opened on the peripheral wall of the drainage body 200 . The annular groove, the first matching portion 511 includes a first annular boss embedded in the first annular groove, and a second annular boss embedded in the second annular groove, the first sealing layer 510 also includes The first seal ring 512 connecting the first annular boss and the second annular boss.

In this embodiment, in order to ensure the tightness of the connection between the first sealing layer 510 and the water inlet body 100 and the drainage body 200 . Generally, the outer diameters of the water inlet body 100 and the drainage body 200 are the same, and the water inlet body 100 and the drainage body 200 are arranged coaxially. Then the opening depth of the first annular groove can be consistent with the opening depth of the second annular groove. The number of the first annular groove and the second annular groove can be one or more. Then when there are multiple first annular grooves and second annular grooves, the plurality of first annular grooves and the plurality of second annular grooves are arranged at intervals along the axial direction of the water inlet body 100 .

By making the first limiting part 130 include a first annular groove opened on the peripheral wall of the water inlet body 100, and the second limiting part 220 includes a second annular groove opened on the peripheral wall of the drainage body 200, then the first annular groove The groove and the second annular groove constitute a glue holding groove. When the first sealing layer 510 is injection-molded on the periphery of the junction of the water inlet body 100 and the drainage body 200, the molten sealing material is evenly filled into the first annular groove and the second annular groove to form a first annular boss respectively. and the second annular boss, and simultaneously form the first sealing ring 512 connecting the first annular boss and the second annular boss. Through this structure, on the one hand, the connection between the water inlet body 100 and the drainage body 200 can be made more stable, and the sealing effect of the two is better; on the other hand, the coaxiality of the water inlet body 100 and the drainage body 200 can be guaranteed, It can ensure the dimensional accuracy of the entire device after lagging and reduce the risk of water seepage.

Practically speaking, the connection steps of the water inlet body 100 and the drainage body 200 can be as follows:

Firstly, the water inlet body 100 and the drainage body 200 are plugged into each other;

Secondly, put the plugged water inlet body 100 and drainage body 200 into the cavity of the overmolding mold;

Again, inject the liquid encapsulation material into the mold cavity of the overmolding mold, so that the encapsulation material fills in the annular grooves on the water inlet body 100 and the drainage body 200, and covers the water inlet body 100 and the drainage body 200 inserts Form an encapsulation layer (the first sealing layer 510) on the surface of the joint;

Finally, the connected water inlet body 100 and drainage body 200 are taken out after the rubber coating is formed.

In one embodiment, please refer to FIG. 1 , FIG. 3 and FIG. 5 , the residual water removal device 10 further includes a water inlet connector 300 , the water inlet connector 300 is sealed and connected to the end of the water inlet body 100 away from the drain body 200 , and the water inlet connector A water inlet channel 310 communicating with the first channel 110 is formed in 300 , and a first one-way valve 600 is provided in the water inlet channel 310 , and the first one-way valve 600 is unidirectionally connected from the water inlet channel 310 to the first channel 110 .

In this embodiment, the water inlet joint 300 is specifically a tubular structure. Of course, the water inlet joint 300 may also be in other shapes. The water inlet channel 310 is arranged through the water inlet connector 300 along the axial direction of the water inlet connector 300 , one end of the water inlet connector 300 is connected with the water inlet body 100 , and the other end is used for connecting with the tap water pipe. In order to reduce fluid resistance, optionally, cross-sections of the first channel 110 and the water inlet channel 310 are arranged in a circular shape, and the first channel 110 and the water inlet channel 310 are arranged coaxially. There are many ways for the water inlet joint 300 to be sealed with the water inlet body 100 , such as sealed connection through a sealing ring, connection through a sealant, and a glued connection, etc., which will not be listed here. Specifically, the first one-way valve 600 can be installed at an end of the water inlet channel 310 close to the first channel 110 . The first one-way valve 600 can have many structures, as long as it can realize one-way communication from the water inlet channel 310 to the first channel 110, and prevent the water in the first channel 110 from flowing back to the water inlet channel 310. The structure of the one-way valve 600 is not specifically limited. By making the water inlet joint 300 separate from the water inlet body 100 , it is convenient to install the first one-way valve 600 into the water inlet joint 300 . By integrating the first one-way valve 600 in the water inlet joint 300, compared with setting the first one-way valve 600 in the water inlet pipe, it is more convenient to install the first one-way valve 600, and makes the residual water removal device 10 The integration degree is high, and the overall structure is more compact, which is conducive to modular production.

In one embodiment, please refer to FIG. 3 to FIG. 5 , the end surface of one of the water inlet connector 300 and the water inlet body 100 is provided with a first limiting post 160 , and the other is provided with a first limiting groove 330 , The first limiting post 160 cooperates with the first limiting groove 330 .

In this embodiment, the number of the first limiting post 160 may be one or multiple. When the first limit post 160 is one, the first limit post 160 can be set at the middle of the end surface of the water inlet joint 300 or the water inlet body 100 , or can be set at a position close to the periphery of the end surface. When there are multiple first limiting columns 160 , the plurality of first limiting columns 160 may be arranged at intervals along the circumference of the water inlet body 100 . In one embodiment, the end surface of the water inlet body 100 is provided with a plurality of first limiting columns 160 , and the plurality of first limiting columns 160 are arranged at intervals along the circumference of the water inlet body 100 . Through the cooperation of the first limiting column 160 and the first limiting groove 330, the water inlet body 100 and the water inlet joint 300 are pre-fixed, and the coaxiality of the water inlet body 100 and the drainage body 200 can be ensured, which is more convenient. A second sealing layer 520 is applied to the periphery of the butt joint between the water inlet body 100 and the water inlet connector 300 . Optionally, the tight fit between the first limiting post 160 and the first limiting groove 330 can ensure the connection stability between the water inlet body 100 and the water inlet joint 300 when they are pre-fixed.

On the basis of the above embodiments, further, as shown in Figure 1 and Figure 3, the water inlet joint 300 and the water inlet body 100 are docked with each other, and the periphery of the butt joint between the water inlet body 100 and the water inlet joint 300 is covered with a second Two sealing layers 520 .

In this embodiment, the water inlet connector 300 is docked with the water inlet body 100 , specifically, the water inlet connector 300 is opposite to and connected to the end of the water inlet body 100 . The periphery of the butt joint between the water inlet body 100 and the water inlet joint 300 is covered with a second sealing layer 520, and the second sealing layer 520 can be embedded in the periphery of the joint between the water inlet body 100 and the water inlet joint 300, or can be bonded On the periphery of the junction between the water inlet body 100 and the water inlet joint 300 , injection molding can also be performed on the periphery of the junction between the water inlet body 100 and the water inlet joint 300 . Here, there is no limitation on the connection method between the second sealing layer 520 and the water inlet body 100 and the water inlet joint 300 , it only needs to make the second sealing layer 520 cover the periphery of the joint between the water inlet body 100 and the water inlet joint 300 , It is sufficient to seal the junction of the water inlet body 100 and the water inlet connector 300 . The material of the second sealing layer 520 can be selected and limited according to requirements. For example, the second sealing layer 520 can be made of rubber material. The periphery of the joint between the water main body 100 and the drainage main body 200 . The second sealing layer 520 can also be made of plastic material, and at this time, the second sealing layer 520 can be coated on the periphery of the junction between the water inlet body 100 and the water inlet connector 300 by injection molding.

By making the butt joint between the water inlet body 100 and the water inlet joint 300 be coated with the second sealing layer 520 , compared with providing a sealing member on the end faces of the water inlet body 100 and the water inlet joint 300 , it is possible to realize the sealing of the water inlet body. 100 and the water inlet joint 300 are sealed while connecting the water inlet body 100 and the water inlet joint 300, so that the connection between the water inlet body 100 and the water inlet joint 300 has a high compressive strength. It can still keep the watertight seal; and compared with the ultrasonic welding of the water inlet body 100 and the water inlet joint 300, it is easier to ensure the consistency of the connection between the water inlet body 100 and the water inlet joint 300, reduce the risk of water seepage, and then improve the water removal. The overall sealing effect of the residual water device 10.

In one embodiment, please refer to FIG. 5 , the second sealing layer 520 is injection-molded on the periphery of the connection between the water inlet body 100 and the water inlet connector 300 .

In this embodiment, the second sealing layer 520 is injection-molded on the periphery of the connection between the water inlet body 100 and the water inlet joint 300 . That is, the joint of the water inlet body 100 and the water inlet connector 300 is encapsulated. The second sealing layer 520 is specifically a rubberized ring. Optionally, the second sealing layer 520 is made of plastic material. Specifically, the plastic material may be polypropylene (PP), polyethylene (PE) and the like. The thickness and width of the second sealing layer 520 can be selected and designed according to actual requirements, and are not specifically limited here. By injecting the second sealing layer 520 around the joint between the water inlet body 100 and the water inlet joint 300, not only the sealing between the water inlet body 100 and the water inlet joint 300 is realized, but also the water inlet body 100 and the water inlet joint 300 are formed through injection molding. If the process is connected, there is no need to set up other structures to connect the water inlet body 100 and the drainage body 200, so the sealing performance is good and the connection reliability is good. That is to say, the connection between the water inlet body 100 and the water inlet connector 300 has a high compressive strength, and can still maintain a tight seal under high pressure. Compared with making the water inlet body 100 and the water inlet joint 300 sealed by a common sealing ring, the device is simple and reliable, can reduce the number of parts of the device, simplify the assembly process, and reduce the risk of water leakage during long-term use; and compared with The water inlet body 100 and the water inlet joint 300 are ultrasonically welded, so that it is easier to ensure the connection consistency between the water inlet body 100 and the water inlet joint 300 and reduce the risk of water seepage.

In one embodiment, as shown in FIG. 1 , FIG. 3 and FIG. 5 , the end of the water inlet joint 300 adjacent to the water inlet body 100 is provided with a third limiting portion 320 , and the end of the water inlet body 100 adjacent to the water inlet joint 300 is provided. There is a fourth limiting part 150 , and the second sealing layer 520 includes a second matching part 521 adapted to the second limiting part and the third limiting part 320 .

In this embodiment, the third limiting portion 320 may specifically include a groove and/or a protrusion provided on a peripheral wall of the water inlet joint 300 . The number of the groove and the protrusion can be one or more. A plurality of grooves or protrusions can be arranged at intervals along the axial direction of the water inlet joint 300 , and can also be arranged at intervals along the circumference of the water inlet joint 300 . Similarly, the fourth limiting portion 150 may specifically include grooves and/or protrusions provided on the peripheral wall of the water inlet body 100 . The number of the groove and the protrusion can be one or more. A plurality of grooves or protrusions may be arranged at intervals along the axial direction of the water inlet body 100 , or may be arranged at intervals along the circumference of the water inlet body 100 . Then the second matching portion 521 specifically includes a groove/protrusion adapted to the protrusion/groove. By setting the third limiting part 320 on the water inlet joint 300 , setting the fourth limiting part 150 on the water inlet body 100 , and the second sealing layer 520 including the third limiting part 320 and the fourth limiting part 150 On the one hand, it is convenient to inject the second sealing layer 520 at the junction of the water inlet body 100 and the water inlet joint 300, and on the other hand, it can increase the connection between the second sealing layer 520 and the water inlet body 100 and the water inlet joint 300. The contact area of the joint 300 ensures the tightness and stability of the connection between the second sealing layer 520, the water inlet body 100 and the water inlet joint 300, and at the same time the third limiting part 320, the fourth limiting part 150 and the second matching part 521 form a structure Sealing can be performed from multiple dimensions, thereby improving the sealing effect of the second sealing layer 520 on the water inlet body 100 and the water inlet connector 300 .

Further, the third limiting part 320 includes a third annular groove opened on the peripheral wall of the water inlet joint 300, the fourth limiting part 150 includes a fourth annular groove opened on the peripheral wall of the water inlet body 100, and the second matching The portion 521 includes a third annular boss embedded in the third annular groove, and a fourth annular boss embedded in the fourth annular groove, and the second sealing layer 520 also includes a ring connecting the third annular boss and The second sealing ring 522 of the fourth annular boss.

In this embodiment, in order to ensure the sealing performance of the connection of the second sealing layer 520 to the water inlet body 100 and the water inlet connector 300 . Generally, the water inlet body 100 and the water inlet connector 300 are arranged coaxially. Then the opening depth of the third annular groove can be consistent with the opening depth of the fourth annular groove. The number of the third annular groove and the fourth annular groove can be one or more. Then when the number of the third annular groove and the fourth annular groove is multiple, the plurality of third annular grooves and the plurality of fourth annular grooves are arranged at intervals along the axial direction of the water inlet body 100 .

By making the third limiting part 320 include a third annular groove opened on the peripheral wall of the water inlet joint 300 , the fourth limiting part 150 includes a fourth annular groove opened on the peripheral wall of the water inlet body 100 , then the third annular groove The groove and the fourth annular groove form a glue holding groove. When the second sealing layer 520 is injection-molded on the periphery of the butt joint between the water inlet body 100 and the water inlet joint 300, the molten sealing material is evenly filled into the third annular groove and the fourth annular groove to form a third annular protrusion respectively. platform and the fourth annular boss, and at the same time form the second sealing ring 522 connecting the third annular boss and the fourth annular boss. Through this structure, on the one hand, the connection between the water inlet body 100 and the water inlet joint 300 can be made more stable, and the sealing effect of the two is better; on the other hand, the coaxiality between the water inlet body 100 and the water inlet joint 300 It can ensure the dimensional accuracy of the whole device after lagging and reduce the risk of water seepage.

In practice, the steps for connecting the water inlet connector 300 to the water inlet body 100 can be as follows:

Firstly, insert the water inlet connector 300 and the water inlet body 100 into each other;

Secondly, put the plugged water inlet body 100 and water inlet joint 300 into the cavity of the overmolding mold;

Again, inject the liquid encapsulation material into the cavity of the overmolding mold, so that the encapsulation material fills in the annular groove on the water inlet joint 300 and the water inlet body 100, and covers the water inlet joint 300 and the water inlet body The surface of the 100 sockets forms an encapsulation layer;

Finally, the connected water inlet joint 300 and water inlet body 100 are taken out after the rubber coating is formed.

It can be understood that the step of inserting the water inlet joint 300 and the water inlet body 100 can be performed before the step of putting the plugged water inlet body 100 and drain body 200 into the cavity of the overmolding mold. That is, the water inlet joint 300, the water inlet body 100, and the drainage body 200 can be plugged together first, and then the plugged water inlet joint 300, the water inlet body 100, and the drainage body 200 can be placed together in the overmolding mold. Gluing treatment is carried out in the cavity. Of course, the step of inserting the water inlet joint 300 and the water inlet body 100 can also be performed after the step of taking out the connected water inlet body 100 and the water discharge body 200 after the rubberized layer is formed. That is, after the water inlet body 100 and the drainage body 200 are glued together, the water inlet body 100 and the water inlet joint 300 are glued together.

In one embodiment, as shown in FIG. 1 , FIG. 3 and FIG. 6 , the residual water removal device 10 further includes a drain connector 400 , and the drain connector 400 is sealingly connected to the end of the drain body 200 away from the water inlet body 100 . A drainage channel 410 communicating with the second channel 210 is formed, and a second one-way valve 700 is arranged in the drainage channel 410 , and the second one-way valve 700 is unidirectionally connected from the second channel 210 to the drainage channel 410 .

In this embodiment, the drainage joint 400 is specifically a tubular structure. Of course, the drainage joint 400 may also be of other shapes. The drain channel 410 is arranged through the water inlet joint 300 along the axial direction of the drain joint 400 , one end of the drain joint 400 is connected to the drain main body 200 , and the other end is used to connect to the drain pipe. In order to reduce fluid resistance, optionally, the cross-sections of the second channel 210 and the drainage channel 410 are arranged in a circular shape, and the second channel 210 and the drainage channel 410 are arranged coaxially. There are many ways to seal the drainage joint 400 and the drainage main body 200 , such as sealing connection through a sealing ring, connection through a sealant, and a glued connection, etc., which will not be listed here. Specifically, the second one-way valve 700 can be installed at an end of the drainage channel 410 close to the second channel 210 . The structure of the second one-way valve 700 can have many, as long as it can realize one-way communication from the second channel 210 to the drain channel 410, and prevent the water in the drain channel 410 from flowing back to the second channel 210, here the second check valve The structure of the directional valve 700 is not specifically limited. By making the drain joint 400 separate from the drain body 200 , it is convenient to install the second one-way valve 700 into the drain joint 400 . By integrating the second one-way valve 700 in the drain joint 400, compared with setting the second one-way valve 700 in the drain pipe, it is more convenient to install the second one-way valve 700, and makes the integration of the residual water removal device 10 The degree is high, and the overall structure is more compact, which is conducive to modular production.

In one embodiment, as shown in FIG. 3 , FIG. 4 and FIG. 6 , the end surface of one of the drainage joint 400 and the drainage body 200 is provided with a second limiting post 250 , and the other is provided with a second limiting groove. 430 , the second limiting post 250 cooperates with the second limiting groove 430 to limit the relative rotation of the drainage joint 400 and the drainage main body 200 .

In this embodiment, the number of the second limiting post 250 may be one or multiple. When the second limiting post 250 is one, the second limiting post 250 can be set at the middle of the end surface of the drainage joint 400 or the drainage body 200 , or can be set at a position close to the periphery of the end surface. When there are multiple second limiting columns 250 , the plurality of second limiting columns 250 may be arranged at intervals along the circumference of the drainage main body 200 . In one embodiment, the end surface of the drainage body 200 is provided with a plurality of second limiting columns 250 , and the plurality of second limiting columns 250 are arranged at intervals along the circumference of the drainage body 200 . Through the cooperation of the second limiting column 250 and the second limiting groove 430, the drainage main body 200 and the drainage joint 400 are pre-fixed, and the coaxiality between the drainage main body 200 and the drainage main body 200 can be ensured, thereby making it easier to adjust the drainage main body. The periphery of the butt joint between the drain connector 200 and the drain joint 400 is coated with the third sealing layer 530 . Optionally, the tight fit between the second limiting post 250 and the second limiting groove 430 can ensure the connection stability of the drainage main body 200 and the drainage joint 400 when they are pre-fixed.

On the basis of the above embodiments, further referring to the drawings and FIG. 3 , the drainage joint 400 and the drainage main body 200 are connected to each other, and the outer periphery of the connection between the drainage main body 200 and the drainage joint 400 is covered with a third sealing layer 530 .

In this embodiment, the drain connector 400 is docked with the drain main body 200 , specifically such that the drain joint 400 is opposite to and connected to the end of the drain main body 200 . The periphery of the junction between the drainage body 200 and the drainage joint 400 is covered with a third sealing layer 530, and the third sealing layer 530 can be embedded in the periphery of the junction of the drainage body 200 and the drainage joint 400, or can be bonded to the drainage body 200 The periphery of the junction with the drainage joint 400 can also be injection-molded on the periphery of the junction of the drainage body 200 and the drainage joint 400 . Here, there is no limit to the connection method between the third sealing layer 530 and the drainage body 200 and the drainage joint 400, only the third sealing layer 530 is required to cover the periphery of the connection between the drainage body 200 and the drainage joint 400 to seal the drainage body 200 and the butt joint of the drainage joint 400 get final product. The material of the third sealing layer 530 can be selected and limited according to requirements. For example, the third sealing layer 530 can be made of rubber, and at this time, the third sealing layer 530 can be coated on the drain surface by bonding, socketing, scarfing, etc. The periphery of the junction between the main body 200 and the drainage main body 200 . The third sealing layer 530 can also be made of plastic material, and then the third sealing layer 530 can be coated on the periphery of the connection between the drainage connector 400 and the drainage main body 200 by injection molding.

By making the outer periphery of the butt joint between the drainage main body 200 and the drainage joint 400 covered with the third sealing layer 530, compared with providing a seal on the end surface of the drainage main body 200 and the drainage joint 400, the connection between the drainage main body 200 and the drainage joint 400 can be achieved. While the butt joint is sealed, it plays a role in connecting the drainage body 200 and the drainage joint 400, so that the joint of the drainage body 200 and the drainage joint 400 has a high compressive strength, and can still maintain a tight seal under high pressure; Because the drainage body 200 and the drainage joint 400 are ultrasonically welded, it is easier to ensure the consistency of the connection between the drainage body 200 and the drainage joint 400 , reduce the risk of water seepage, and further improve the overall sealing effect of the residual water removal device 10 .

In one embodiment, please refer to FIG. 6 , the third sealing layer 530 is injection-molded on the periphery of the connection between the drainage body 200 and the drainage joint 400 .

In this embodiment, the third sealing layer 530 is injection-molded on the periphery of the connection between the drainage main body 200 and the drainage joint 400 . That is, encapsulation treatment is performed on the junction of the drainage main body 200 and the drainage joint 400 . The third sealing layer 530 is specifically a rubberized ring. Optionally, the third sealing layer 530 is made of plastic material. Specifically, the plastic material may be polypropylene (PP), polyethylene (PE) and the like. The thickness and width of the third sealing layer 530 can be selected and designed according to actual requirements, and are not specifically limited here. By injection molding the third sealing layer 530 around the junction of the drainage body 200 and the drainage joint 400, not only the sealing of the drainage body 200 and the drainage joint 400 is achieved, but also the drainage body 200 and the drainage joint 400 are connected through the injection molding process. Additional structures are provided to connect the water inlet main body 100 and the drainage main body 200, so that the sealing performance is good and the connection reliability is good. That is to say, the connection between the drainage main body 200 and the drainage connector 400 has high compressive strength, and can still maintain a tight seal under high pressure. Compared with making the drainage main body 200 and the drainage joint 400 sealed by a common sealing ring, the device is simple and reliable, can reduce the number of parts of the device, simplify the assembly process, and reduce the risk of water leakage during long-term use; and compared to making the drainage The main body 200 and the drainage joint 400 are ultrasonically welded, which can more easily ensure the connection consistency between the drainage main body 200 and the drainage joint 400 and reduce the risk of water seepage.

Practically speaking, the connection steps of the drainage joint 400 and the drainage body 200 can be as follows:

Firstly, the drainage joint 400 and the drainage main body 200 are inserted into each other;

Secondly, put the plugged drainage body 200 and the drainage joint 400 into the cavity of the overmolding mold;

Again, inject the liquid lagging material into the cavity of the lagging mold, so that the lagging material fills in the annular groove on the drainage body 200 and the drainage joint 400, and covers the joint of the drainage body 200 and the drainage joint 400 The surface of the rubber layer is formed;

Finally, the connected drainage connector 400 and drainage body 200 are taken out after the rubber coating is formed.

It can be understood that the step of inserting the drainage joint 400 and the drainage body 200 can be performed before the step of putting the inserted water inlet body 100 and drainage body 200 into the cavity of the overmolding mold. That is, the water inlet body 100, the water outlet body 200, and the water outlet joint 400 can be inserted into each other first, or the water inlet joint 300, the water inlet body 100, the water outlet body 200, and the water outlet joint 400 can be inserted into each other. Then place the plugged water inlet body 100, drain body 200 and drain joint 400 together in the cavity of the overmolding mold for encapsulation treatment, or place the plugged water inlet joint 300, water inlet body 100, and drain body 200 and the drainage joint 400 are placed together in the cavity of the overmolding mold for overmolding. Of course, the step of inserting the water inlet joint 300 and the water inlet body 100 can also be performed after the step of taking out the connected water inlet body 100 and the water discharge body 200 after the rubberized layer is formed. That is, after the water inlet body 100 and the drainage body 200 are glued together, the drainage body 200 and the drainage joint 400 are glued together.

In one embodiment, as shown in FIG. 1 , FIG. 3 and FIG. 6 , the end of the drainage joint 400 adjacent to the drainage main body 200 is provided with a fifth limiting portion 420 , and the end of the drainage main body 200 adjacent to the drainage joint 400 is provided with a sixth limiting portion. The position portion 240 , the third sealing layer 530 includes a third matching portion 531 adapted to the fifth and sixth limiting portions 240 .

In this embodiment, the fifth limiting portion 420 may specifically include a groove and/or a protrusion provided on a peripheral wall of the drain connector 400 . The number of the groove and the protrusion can be one or more. A plurality of grooves or protrusions can be arranged at intervals along the axial direction of the drainage joint 400 , and can also be arranged at intervals along the circumferential direction of the drainage joint 400 . Similarly, the sixth limiting portion 240 may specifically include grooves and/or protrusions provided on the peripheral wall of the drainage main body 200 . The number of the groove and the protrusion can be one or more. A plurality of grooves or protrusions can be arranged at intervals along the axial direction of the drainage body 200 , and can also be arranged at intervals along the circumference of the drainage body 200 . Then the third matching portion 531 specifically includes a groove/protrusion adapted to the protrusion/groove. By setting the fifth limiting part 420 on the drainage joint 400 and the sixth limiting part 240 on the drainage main body 200, the third sealing layer 530 includes a first limiting part 420 and a sixth limiting part 240. The three matching parts 531 facilitate injection molding of the third sealing layer 530 at the junction of the drainage body 200 and the drainage joint 400 on the one hand, and increase the contact area between the third sealing layer 530 and the drainage body 200 and the drainage joint 400 on the other hand. Ensure the tightness and stability of the connection between the third sealing layer 530 and the drainage body 200 and the drainage joint 400, while the fifth limiting part 420, the sixth limiting part 240 and the third matching part 531 form a structural seal, which can be sealed from multiple dimensions , thereby improving the sealing effect of the third sealing layer 530 on the drainage main body 200 and the drainage joint 400 .

Further, please refer to FIG. 1 , FIG. 3 and FIG. 6 again, the fifth limiting part 420 includes a fifth annular groove opened on the peripheral wall of the drainage joint 400 , and the sixth limiting part 240 includes a peripheral wall opened on the drainage main body 200 The sixth annular groove, the third matching portion 531 includes a fifth annular boss embedded in the fifth annular groove, and a sixth annular boss embedded in the sixth annular groove, the third sealing layer 530 also includes a third sealing ring 532 connecting the fifth annular boss and the sixth annular boss.

In order to ensure the tightness of the connection between the third sealing layer 530 and the drainage main body 200 and the drainage connector 400 . Generally, the drain body 200 is arranged coaxially with the drain joint 400 . Then the opening depth of the fifth annular groove and the opening depth of the sixth annular groove can be consistent. The number of the fifth annular groove and the sixth annular groove can be one or more. Then when there are multiple fifth annular grooves and sixth annular grooves, the plurality of fifth annular grooves and the plurality of sixth annular grooves are arranged at intervals along the axial direction of the drainage body 200 .

By making the fifth limiting part 420 include a fifth annular groove opened on the peripheral wall of the drainage joint 400, and the sixth limiting part 240 includes a sixth annular groove opened on the peripheral wall of the drainage main body 200, then the fifth annular groove And the sixth annular groove constitutes the glue-holding groove. When the third sealing layer 530 is injection-molded on the periphery of the butt joint between the drainage body 200 and the drainage joint 400, the molten sealing material is evenly filled into the fifth annular groove and the sixth annular groove to form the fifth annular boss and the sixth annular groove respectively. The sixth annular boss also forms a third seal ring 532 connecting the fifth annular boss and the sixth annular boss. Through this structure, on the one hand, the connection between the drainage main body 200 and the drainage joint 400 can be made more stable, and the sealing effect of the two is better; Ensure the dimensional accuracy of the entire device after lagging and reduce the risk of water seepage.

In one embodiment, please refer to FIG. 1 to FIG. 4 , the residual water removal device 10 further includes a throat 800 connected to the water inlet body 100 , and the throat 800 is formed to communicate with the water outlet 112 of the first channel 110 The throat 810, the cross-sectional area of the throat 810 is smaller than the cross-sectional area of the first channel 110 and the second channel 210, the periphery of the throat 800 is formed with an annular cavity 170, and the throat 810 passes through the annular cavity 170 and the second channel 210 In communication, the annular cavity 170 communicates with the drainage channel 120 .

In this embodiment, the throat 800 is specifically configured in a cylindrical shape. The throat 800 is connected to the water inlet body 100 , that is, the throat 800 is connected to the water outlet 112 of the first channel 110 . The throat 810 communicates with the second passage 210 through the annular cavity 170 , that is, the end surface of the throat 800 is spaced apart from the inlet end of the second passage 210 . The lengths of the first channel 110 and the second channel 210 can be designed according to actual needs, and the length of the throat 810 is usually much smaller than the lengths of the first channel 110 and the second channel 210 . The cross-sectional area of the throat 810 is smaller than the cross-sectional areas of the first channel 110 and the second channel 210 . The throat 810 then has the smallest cross-sectional area. The throat 810 may be formed in the water inlet joint 300 or in the drain joint 400 . The annular cavity 170 may be formed in the water inlet joint 300 or in the drain joint 400 . It can be appreciated that the annular cavity 170 is disposed around the periphery of the throat 800 . Then the ratio of the maximum inner diameter of the annular cavity 170 to the inner diameter of the throat 810 can be selected and designed according to actual requirements.

By forming the annular cavity 170 on the periphery of the throat 800, when the water flow flows from the first passage 110 to the throat 810, the water pressure in the throat 810 increases and the flow velocity slows down. When the water flows into the annular cavity 170 Afterwards, the pressure of the water flow decreases instantaneously, and the flow rate increases, thereby forming a negative pressure in the annular chamber 170. In this way, under the action of the negative pressure, the residual water at the residual water outlet is sucked into the annular chamber 170 through the drainage channel 120, so that The residual water flows into the drain channel 410 together with the tap water, and is discharged from the drain pipe. Compared with the traditional Venturi tube that forms a negative pressure in the throat 810, by setting the annular cavity 170 on the periphery of the throat 800 so that the drainage channel 120 is connected to the annular cavity 170, the negative pressure is formed in the annular cavity 170, In this way, the negative pressure can be increased, and the capacity of the residual water removal device 10 for residual water can be increased, which can effectively improve the efficiency and effect of the residual water removal device 10 in absorbing residual water. Optionally, the ratio of the maximum inner diameter of the annular cavity 170 to the inner diameter of the throat 810 is greater than or equal to 2 and less than or equal to 5. In this way, the negative pressure and residual water capacity formed in the annular chamber 170 can be maximized, and then the efficiency and effect of the residual water removal device 10 for absorbing residual water can be maximized.

Further, as shown in FIG. 1 and FIG. 2 , the annular chamber 170 is disposed in the water inlet body 100 . Then the drainage channel 120 and the throat 810 are also formed in the water inlet body 100 . Of course, in other embodiments, the annular cavity 170 , the drainage channel 120 and the throat 810 may also be arranged in the drainage main body 200 .

In one embodiment, the annular cavity 170 includes a tapered section 171 , and the inner diameter of the tapered section 171 is gradually reduced from the first channel 110 to the second channel 210 . This allows the annular chamber 170 to be configured as a tapered section 171 as a whole, so that the inner diameter of the annular chamber 170 is gradually reduced from the first channel 110 to the second channel 210 . It is also possible to configure part of the annular cavity 170 as a tapered section 171 . Optionally, a section of the annular cavity 170 close to the second channel 210 is set as a tapered section 171 . By making the annular chamber 170 include a tapered section 171, the tapered section 171 acts as a guide to the residual water and tap water in the annular chamber 170, thereby accelerating the flow rate of the water flow from the annular chamber 170 to the second channel 210, further The efficiency of adsorbing residual water of the residual water removal device 10 is improved.

The present application also proposes a dishwasher, which includes a drainage device and a residual water removal device 10. The drainage device includes a water cup, and the water cup has a water inlet and a residual water outlet. The specific structure of the residual water removal device 10 refers to the above-mentioned implementation. For example, the water inlet body 100 of the residual water removal device 10 communicates with the water inlet, and the connection between the first channel 110 and the second channel 210 of the residual water removal device 10 communicates with the residual water outlet through the drainage channel 120. Since the dishwasher All the technical solutions of the above-mentioned embodiments are adopted, and thus at least have all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

Practically speaking, the dishwasher also includes a body, which includes an inner tank for installing bowls, and the inner tank defines a sink, and the water cup is arranged at the bottom of the sink to collect sewage after washing the dishes. The bottom of the water cup is provided with a residual water outlet. A drain pipe is connected to the outlet of the residual water, and the drain joint 400 of the residual water removal device 10 can be connected with the drain pipe. Specifically, a drain pump can also be provided, and one end of the drain pump is connected with the drain pipe, and the other end is communicated with the residual water outlet of the water cup. After the dishwasher finishes washing the tableware, the sewage enters the water cup, and the drain pump starts to work to drain the water in the cup directly through the drain pipe, but the drain pump cannot completely drain the water in the cup, and there will be a small amount of remaining water In the water cup, the drain pump stops working at this time. In order to discharge the residual water in the water cup, the water flows through the water inlet joint 300 through the water inlet pipe 300 , the water inlet body 100 , the drain joint 400 , and the drain body 200 . The negative pressure generated at will suck away the residual water through the drainage channel 120, so that the residual water between the bottom of the water cup and the drain pump can be completely extracted.

The above are only optional embodiments of the present application, and are not intended to limit the patent scope of the present application. Under the inventive concept of the present application, the equivalent structural transformations made by using the description of the application and the contents of the accompanying drawings, or direct/indirect Applications in other relevant technical fields are included in the patent protection scope of the present application.

Claims (17)

A device for removing residual water, wherein the device for removing residual water includes: a water inlet body, a first channel is formed in the water inlet body; The drainage body is docked with the water inlet body, and a second channel is formed in the drainage body; Wherein, the first channel communicates with the second channel, and the first channel has a communication port that communicates with the second channel, and the area of the communication port is not larger than that of the first channel and the second channel. The cross-sectional area of the remaining positions of the two passages, at least part of the first passage is set in a cross-section gradually decreasing toward the direction of the second passage, and the connection between the first passage and the second passage passes through The drainage channel communicates with the residual water outlet. The device for removing residual water according to claim 1, wherein one of the water inlet body and the drainage body is provided with a central insertion shaft, and the other is provided with a central insertion shaft adapted to the central insertion shaft. hole. The device for removing residual water according to claim 1, wherein the periphery of the connection between the water inlet body and the drainage body is covered with a first sealing layer. The device for removing residual water according to claim 3, wherein the first sealing layer is injection-molded on the periphery of the junction between the water inlet body and the drainage body. The device for removing residual water according to claim 3, wherein, one end of the water inlet body adjacent to the drainage body is provided with a first limiting portion, and the end of the drainage body adjacent to the water inlet body is provided with a second The limiting part, the first sealing layer includes a first matching part adapted to the first limiting part and the second limiting part. The device for removing residual water according to claim 5, wherein the first limiting part comprises a first annular groove opened on the peripheral wall of the water inlet body, and the second limiting part comprises a first annular groove opened on the peripheral wall of the water inlet body. The second annular groove on the peripheral wall of the drainage main body, the first matching part includes a first annular boss embedded in the first annular groove, and a first annular boss embedded in the second annular groove. Two annular bosses, the first sealing layer further includes a first sealing ring connecting the first annular boss and the second annular boss. The device for removing residual water according to claim 3, wherein the first sealing layer is made of plastic material. The device for removing residual water according to any one of claims 1 to 7, wherein the device for removing residual water further comprises a water inlet joint, the water inlet joint is connected to the end of the water inlet body away from the drain body Sealed connection, a water inlet channel communicating with the first channel is formed in the water inlet joint, a first one-way valve is arranged in the water inlet channel, and the first one-way valve is controlled by the water inlet channel One-way conduction to the first channel. The device for removing residual water according to claim 8, wherein, the end face of one of the water inlet joint and the water inlet body is provided with a first limiting column, and the other is provided with a first limiting groove, The first limiting post cooperates with the first limiting groove. The device for removing residual water according to claim 8, wherein the water inlet joint and the water inlet body are docked with each other, and the periphery of the junction between the water inlet body and the water inlet joint is covered with a second seal Floor. The device for removing residual water according to claim 10, wherein the second sealing layer is injection-molded on the periphery of the connection between the water inlet body and the water inlet connector. The device for removing residual water according to any one of claims 1 to 7, wherein the device for removing residual water further comprises a drain joint, and the drain joint is sealed and connected to the end of the drain main body away from the water inlet main body , a drainage channel communicating with the second channel is formed in the drainage joint, a second one-way valve is arranged in the drainage channel, and the second one-way valve is connected from the second channel to the drainage channel One-way communication. The device for removing residual water according to claim 12, wherein the drainage joint and the drainage main body are butted with each other, and the periphery of the joint between the drainage main body and the drainage joint is covered with a third sealing layer. The device for removing residual water according to claim 13, wherein the third sealing layer is injection-molded on the periphery of the connection between the drainage body and the drainage connector. The device for removing residual water according to claim 1, wherein the device for removing residual water further comprises a throat, the throat is connected to the water inlet body, and the water outlet of the first channel is formed in the throat A throat connected at the end, the cross-sectional area of the throat is smaller than the cross-sectional area of the first channel and the second channel, and an annular cavity is formed on the periphery of the throat, and the throat passes through the annular The cavity communicates with the second channel, and the annular cavity communicates with the drainage channel. The device for removing residual water according to claim 15, wherein, the annular chamber is arranged in the water inlet body; and/or, the annular chamber includes a tapered section, and the inner diameter of the tapered section is from the The first channel is set gradually decreasing towards the second channel. A dishwasher, wherein the dishwasher includes: a drainage device comprising a water cup having a water inlet and a residual water outlet; and The residual water removal device according to any one of claims 1 to 16, the water inlet body of the residual water removal device communicates with the water inlet, the first channel of the residual water removal device is connected to the second channel The communication part communicates with the residual water outlet through the drainage channel.