CN210961852U - Dispensing system and dishwasher with the same - Google Patents

Abstract

The present disclosure is directed to a dispensing system that includes a front housing and a rear housing that are joined together, define a reservoir cavity therebetween, and include a charge pump configured to draw liquid from the reservoir cavity and dispense the liquid to an area to be dispensed. Wherein at least a part of the rear shell bulges towards the front shell to form a convex part at a side of the rear shell facing towards the front shell and a concave part at a side of the rear shell facing away from the front shell, the charge pump being mounted to the rear shell and at least a part of it being arranged in the concave part of the rear shell, wherein the shape of the concave part corresponds to the shape of the part of the charge pump arranged in the concave part. The present disclosure also proposes a dishwasher, the dosing system being mounted on a door of the dishwasher such that a front shell of the dosing system faces the inside of the dishwasher when the door is closed.

Description

Dispensing system and dishwasher with the same

Technical Field

The present disclosure relates to a dosing system usable for dosing detergent, and a dishwasher having the dosing system.

Background

Dishwashers are usually equipped with a detergent dispensing system for a user to dispense one or more detergents into the dishwasher. In order to miniaturize the dishwasher as a whole, the detergent delivery system needs to occupy as little space as possible while satisfying a sufficiently large capacity.

For dishwashers in which the detergent delivery system is mounted on the door of the dishwasher, the considerations regarding space utilization of the detergent delivery system are more complex. Typical of such dishwashers are built-in dishwashers which are popular in the market and have a body embedded in a under-kitchen space or a wall body, and only a door thereof is exposed so as to be accessible and operable by a user. To facilitate the addition of detergent by the user, the dispensing system is usually mounted on the door. In order to maximize the capacity of the dishwasher and to make the door easy to open or close, the door should not be too thick, so that the dispensing system mounted on the door is also limited in thickness. But no uniform standard for this limitation is yet available. It goes without saying that the dispensing system should not be too thick, which would be difficult to install on the door and would interfere with the spray arm inside the dishwasher. Too thin a dosing system often means a small volume and difficulty in meeting capacity requirements. In addition, theoretically, if the dispensing system is made longer and wider for the same volume, the thickness of the dispensing system will naturally be reduced, but this will lead to the dispensing system occupying too much area on the door, affecting the installation of other parts and also affecting the aesthetic appearance of the door.

In summary, it is a complicated problem to improve the space utilization of the delivery system. At present, no method for improving the space utilization rate of a release system is available.

SUMMERY OF THE UTILITY MODEL

The present solution addresses the above mentioned problems and needs and provides a novel dispensing system and a dishwasher having the same, which solves the above mentioned problems and brings other technical effects due to the following technical features.

The present disclosure is directed, first, to a dispensing system comprising a front housing and a rear housing coupled together to define a reservoir cavity therebetween, and a priming pump configured to draw liquid from the reservoir cavity and dispense the liquid to an area to be dispensed. Wherein at least a part of the rear shell bulges towards the front shell to form a convex part at a side of the rear shell facing towards the front shell and a concave part at a side of the rear shell facing away from the front shell, the charge pump being mounted to the rear shell and at least a part of it being arranged in the concave part of the rear shell, wherein the shape of the concave part corresponds to the shape of the at least a part of the charge pump arranged in the concave part.

According to the preferred scheme of the present disclosure, the liquid feeding pump feeds the liquid to the area to be fed at the feeding port through the feeding pipeline, and the feeding port is located on the front end surface of the front shell and at a height close to the bottom of the liquid storage cavity.

According to the preferred scheme of this disclosure, input mouth department is provided with input mouth check valve for liquid can only flow out to treating the input region from input mouth, can't flow in the input system through input mouth from treating the input region.

According to a preferred aspect of the disclosure, the dosing pipe has a dosing interface for connection to a charge pump, the dosing interface being in the form of a pipe extending into the recess of the back shell.

According to the preferred scheme of the present disclosure, the throwing interface is arranged in parallel with the front end surface of the front shell, and the throwing pipeline extends in an L shape from the throwing interface to the throwing opening.

According to a preferred aspect of the present disclosure, the launch conduit comprises a front launch conduit portion formed by the front shell, and a rear launch conduit portion formed by the rear shell and communicating with the front launch conduit portion.

According to a preferred aspect of the present disclosure, the front launch conduit portion and the rear launch conduit portion are joined together by welding.

According to a preferred aspect of the present disclosure, the front and rear launch pipe portions are joined together by plugging, and a seal is provided at the plugging portion of the front and rear launch pipe portions.

According to a preferred version of the present disclosure, the charge pump draws the liquid from a reservoir via a suction line, wherein the suction line is formed by the back shell.

According to a preferred aspect of the present disclosure, the liquid suction pipe is arranged in parallel to the front end surface of the front case.

According to a preferred version of the present disclosure, the pipette tubing has a pipette interface for connection to a pipette pump, the pipette interface being in the form of tubing that extends into a recess of the rear housing.

According to a preferred aspect of the present disclosure, the rear case is provided with a flange extending from an outer circumferential surface thereof, the front case is provided with a flange structure, and the flange structure engages an outer side of the flange when the front case and the rear case are coupled together, and such that a coupling portion of the front case and the rear case is surrounded by the flange structure and the flange.

According to the preferred scheme of this disclosure, be provided with preceding shell subchamber baffle on the preceding shell, be provided with the backshell subchamber baffle that corresponds with preceding shell subchamber baffle position on the backshell, when preceding shell and backshell joint together, preceding shell subchamber baffle and backshell subchamber baffle butt joint are in the same place, in order to with the stock solution chamber is separated into two at least subchambers.

According to the preferred scheme of this disclosure, the preceding terminal surface of preceding shell is provided with the filling opening that communicates the stock solution chamber, and this filling opening department is provided with the sealed lid subassembly that is used for sealed stock solution chamber.

According to the preferred scheme of the present disclosure, the top wall of the rear shell is provided with an air inlet communicated to the liquid storage cavity, and the air inlet is provided with an air inlet check valve.

According to this disclosed preferred scheme, the stock solution chamber includes two sub-chambeies, wherein, dispensing system is provided with two imbibition pipelines, and the liquid feeding pump is from two sub-chambeies suction liquid respectively via two imbibition pipelines, and wherein, dispensing system is provided with two and puts in the pipeline, and the liquid feeding pump will come from two sub-chambeies respectively via two put in the pipeline and put into the region of waiting to put in two of putting in the mouth that are located the preceding terminal surface department of preceding shell.

According to a preferred aspect of the present disclosure, there is also included a fluid level detection probe assembly having a probe, wherein the fluid level detection probe assembly is mounted into the recess of the rear housing and such that the probe extends through the rear housing into the fluid reservoir chamber.

The present disclosure also proposes a dishwasher comprising a door and a dosing system as described in the foregoing, mounted on the door such that the front shell of the dosing system faces the interior of the dishwasher when the door is closed.

According to a preferred aspect of the present disclosure, the rear case is provided with a flange extending from an outer periphery thereof, wherein a sealing gasket is provided between the flange and the door.

The best modes for carrying out the present disclosure will be described in more detail below with reference to the accompanying drawings so that the features and advantages of the present disclosure can be readily understood.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments of the present disclosure will be briefly described below. The drawings are intended to depict only some embodiments of the disclosure, and not all embodiments of the disclosure are limited thereto.

FIG. 1 illustrates an exemplary dishwasher equipped with a dispensing system as set forth in the present disclosure;

FIG. 2 illustrates a six-view of one embodiment of a delivery system in accordance with the present disclosure;

FIG. 3 illustrates an exploded view of one embodiment of a delivery system as set forth in the disclosure;

FIG. 4 illustrates an exploded view of one embodiment of the delivery system of the present disclosure from a different perspective than that of FIG. 3;

FIG. 5 schematically illustrates the shape relationship of the rear housing recess and the charge pump of the dispensing system proposed by the present disclosure;

FIG. 6 illustrates a perspective view of a front housing of the delivery system set forth in the present disclosure;

FIG. 7 illustrates a perspective view of the front housing of the dispensing system set forth in the present disclosure with the sealing cover and the dispensing port check valve removed;

FIG. 8 illustrates a view of the front shell of the present delivery system as viewed from inside the delivery system, and illustrates a cross-sectional view at plane A-A;

FIG. 9 illustrates a perspective view of a rear housing and a charge pump mounted thereon of the dispensing system set forth in the present disclosure;

FIG. 10 illustrates a perspective view of a rear housing of the delivery system set forth in the present disclosure;

FIG. 11 illustrates a view of the rear shell of the present launch system as viewed from the interior of the launch system, and illustrates cross-sectional views at planes B-B and C-C;

FIG. 12 illustrates a partial view of one embodiment of the launch system set forth in the present disclosure with the front launch conduit portion and the rear launch conduit portion spliced together;

FIG. 13 illustrates a partial view of a particular embodiment of the launch system according to the present disclosure, wherein the front launch pipe section and the rear launch pipe section are welded together;

fig. 14 shows a connection structure of a front shell and a rear shell of the delivery system proposed by the present disclosure.

List of reference numerals

1 dishwasher

2 delivery system

10 front shell

11 front end face

12-fold structure

13 front shell sub-cavity partition plate

14 filler neck

15 sealing cover

16 sealing gasket

20 rear shell

21 concave part

22 flange

23 rear shell sub-cavity partition

24 air inlet

25 air inlet one-way valve

30 liquid storage cavity

40 liquid feeding pump

50 throwing pipeline

51 throwing port

511 throwing-in mouth check valve

52 drop interface

53 front drop pipe section

54 rear delivery pipe section

55 sealing element

60 liquid suction pipeline

61 pipette tip

70 liquid level detection probe assembly

71 Probe

I first sub-cavity

II second sub-cavity

Detailed Description

In order to make the objects, technical solutions and advantages of the technical solutions of the present disclosure more clear, the technical solutions of the embodiments of the delivery system proposed by the present disclosure will be described below in detail and completely with reference to the accompanying drawings of specific embodiments of the present disclosure. Like reference symbols in the various drawings indicate like elements.

The described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in the description and claims of the present disclosure are not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly. "parallel", "perpendicular", and the like are to be understood as "parallel", "perpendicular", and the like, within the tolerance.

Fig. 1 shows an exemplary dishwasher 1 equipped with a dosing system 2 as proposed by the present disclosure. Preferably, the dosing system 2 is mounted on a door 3 of said dishwasher 1, wherein the dosing system 2 is substantially horizontal when the door 3 of the dishwasher 1 is open, as shown in the left figure of fig. 1, and the dosing system 2 is substantially vertical when the door 3 is closed, as shown in the right figure of fig. 1. The dosing system 2 comprises a front housing 10 and a rear housing 20, which are mounted in such a direction that the front housing 10 of the dosing system 2 faces the interior of the dishwasher 1 when the door 3 is closed.

The dosing system 2 may be mounted to the door 3 of the dishwasher in such a way that it is partly embedded in the door 3. According to a particular embodiment, the dosing system 2 has a sealing gasket 16 around it for sealing between the dosing system 2 and the dishwasher door 3. The portion of the front housing 10 exposed outside the door 3 towards the inside of the dishwasher 1 and the portion of the rear housing 20 buried inside the door 3, delimited by a sealing gasket 16.

Unless otherwise specified, the expressions "up", "down", "high", "low", "top", "bottom", etc. are based on the fact that the presentation system 2 is arranged as shown in fig. 3 and 4, and the direction in which the front shell 10 and the rear shell 20 face is horizontal. This is also the orientation of the dispensing system 2 when the door 3 is normally closed.

Fig. 2-4 generally illustrate the structure of a particular embodiment of the delivery system 2 as proposed by the present disclosure. Specifically, fig. 2 shows six views of the delivery system 2, wherein a is a bottom view, B is a right side view, C is a front view, D is a top view, E is a left side view, and F is a rear view. Fig. 3 illustrates an exploded view of the launch system 2, and fig. 4 illustrates another exploded view of the launch system 2 from a different perspective than fig. 3.

As shown in fig. 2-4, the basic components of the dispensing system 2 include a front housing 10, a rear housing 20, and a charge pump 40.

The front shell 10 and the rear shell 20 are joined together to form the outer housing of the delivery system 2. The dosing system 2 may be of generally flat rectangular parallelepiped configuration, so as to be better adapted to various types of dishwashers 1.

The front case 10 and the rear case 20 define a reservoir chamber 30 therebetween for storing liquid. Wherein the reservoir 30 may be directly defined by the materials of the front case 10 and the rear case 20. Reservoir 30 may be a separate chamber structure defined by other reservoir structures disposed between front housing 10 and rear housing 20. The liquid stored in the reservoir 30 may be, for example, detergent, butterfly agent, etc. The number of reservoirs 30 can be one or more. In the preferred embodiment shown in the drawings, a front housing sub-chamber partition 13 is disposed on the front housing 10, and a rear housing sub-chamber partition 23 corresponding to the front housing sub-chamber partition 13 is disposed on the rear housing 20, and when the front housing 10 and the rear housing 20 are joined together, the front housing sub-chamber partition 13 and the rear housing sub-chamber partition 23 are butted together (e.g., welded) to divide the liquid storage chamber 30 into a plurality of sub-chambers, such as a first sub-chamber I and a second sub-chamber II shown in the drawings, or more sub-chambers. Different subcavities may be used to store different solutions, such as dishwashing liquid, Liangsphene, and the like. In addition, it is preferable that the top wall of the rear case 20 is provided with an air inlet 24 communicated to the reservoir chamber 30 for supplementing air to the reservoir chamber 30. When the lotion in the cartridge is reduced, air can be replenished from the air inlet 24, thereby avoiding the creation of a vacuum negative pressure. More preferably, an inlet check valve 25 is disposed at the inlet 24. Like this, when liquid pump 40 from the stock solution box absorb liquid, make liquid reduce in the stock solution box, outside gas just gets into inside the stock solution box through the check valve, avoids producing vacuum negative pressure in the stock solution box, and because the check valve can only one-way switch on, consequently, the detergent in the stock solution box can't spill over from the check valve.

The priming pump 40 is configured to draw liquid from the reservoir 30 and dispense the liquid to an area to be dosed. For example, the charge pump 40 may suck the detergent in the reservoir chamber 30 and dispense the detergent into the interior of the dishwasher 1. While a two-position pump is shown for the embodiment having two subchambers I, II, a single-position or multi-position pump may be used.

As mentioned before, in order to miniaturize the dishwasher 1 as a whole, the detergent delivery system 2 needs to occupy as little space as possible of the dishwasher 1 while satisfying a sufficiently large capacity. To this end, the present disclosure proposes to make at least a portion of the rear housing 20 of the dosing system 2 bulging towards said front housing 10, to form a convex portion on a side of the rear housing 20 facing towards the front housing 10 and to form a concave portion 21 on a side of the rear housing 20 facing away from the front housing 10. In this way, the rear housing 20 may still be of generally uniform thickness. A charge pump 40 is mounted in the recess 21 of the rear housing 20. For this purpose, the recess 21 may be provided with mounting structures for mounting the charge pump 40, such as through holes for receiving screws or the like. It is furthermore important that at least a part of the charge pump 40 is arranged in a recess 21 of the rear shell 20, and wherein the shape of the recess 21 corresponds to the shape of the part of the charge pump 40 arranged in this recess 21. That is, the rear case 20 is contour-designed such that a shape of a portion of the rear case 20 matches a shape of a portion of the pump, so that the charge pump 40 is fittingly inserted into the recess 21 of the rear case 20, to improve space efficiency. In which only a small clearance may be left between the rear housing 20 and the charge pump 40, for example in order to reduce the clearance within the tolerance range in which manufacturing errors affect the process of mounting and dismounting the charge pump 40.

To illustrate this concept, reference is made to fig. 5, which schematically shows the shape relationship between the concave portion 21 of the rear shell 20 and the charge pump 40 of the dispensing system 2 proposed by the present disclosure, i.e. at least a portion of the rear shell 20 is raised towards said front shell 10 to form a semi-cylindrical convex portion on the side of the rear shell 20 facing towards the front shell 10 and a semi-cylindrical concave portion 21 on the side of the rear shell 20 facing away from the front shell 10. The semi-cylindrical shaped recess 21 of the rear case 20 matches the cylindrical shape of a portion of the charge pump 40. In this way, the rear housing 20 and the priming pump assembly as a whole occupy only a small thickness. It should be noted that this figure is a schematic drawing made for illustrative purposes only, and therefore the charge pump 40 is simplified to a cylindrical shape. In practice, the priming pump 40 will generally have an irregular shape, and therefore the recess 21 of the rear housing 20 will also be designed to have a corresponding irregular shape.

By this feature the dispensing system can be thin enough to fit in doors that are not thick enough.

The dosing system 2 is provided with a filling opening 14 in communication with the reservoir 30 at the front end face 11 of the front housing 10, and the filling opening 14 may be provided with a sealing lid 15 for sealing the reservoir 30, see fig. 6 and 7, where fig. 6 shows the sealing lid 15 at the filling opening 14, and fig. 7 shows the sealing lid 15 removed, showing only the filling opening 14, further, fig. 8 shows the front housing 10 of the present dosing system 2 when viewed from inside the dosing system 2, and shows a cross-sectional view at plane a-a, showing the filling opening 14 in another way, preferably the filling opening 14 is provided at a higher position of the front housing 10, and at a level close to the top of the reservoir 30, thereby reducing the chance of detergent leakage, in use, a user may open the sealing lid 15, add a certain amount of detergent, such as 500m L dishwashing liquid, 200m L detergent, at a time into the reservoir, and then screw on the sealing lid 15, thereby completing the dosing process.

When the washing starts, the system controls the liquid pump 40 to work, the liquid pump 40 sucks the liquid from the liquid storage chamber 30 through the liquid suction pipeline 60 and puts the liquid into the area to be put through the putting pipeline 50 at the putting opening one-way valve 511. The input port check valve 511 is located on the front end surface 11 of the front housing 10 and is located at a height close to the bottom of the reservoir 30.

Preferably, the one-way valve 511 of the feeding port is arranged at the one-way valve 511 of the feeding port, so that the liquid can only flow out from the one-way valve 511 of the feeding port to the area to be fed, and cannot flow into the feeding system 2 from the area to be fed through the one-way valve 511 of the feeding port. Reference is made to fig. 6 and 7, wherein fig. 6 shows the inlet check valve 511 with the one-way valve at the inlet check valve 511, while fig. 7 shows the inlet check valve 511 with the one-way valve of the inlet check valve 511 removed, showing only the inlet check valve 511. In addition, the cross-sectional view at plane A-A of FIG. 8 also shows a discharge port check valve 511.

To improve space utilization, the present disclosure has been specifically designed for the aspiration line 60. As previously described, the aspiration line 60 provides fluid from the reservoir 30 to the line of the pump 40. The suction line 60 is connected at one end to the reservoir 30 and at the other end to a line of the priming pump 40 for pumping the liquid, so that the priming pump 40 can pump the liquid from the reservoir 30 via the suction line 60.

Preferably, the suction line 60 is formed from the material of the rear housing 20. Reference is made to fig. 10 and 11, where fig. 10 shows a perspective view of the back shell 20 of the launch system 2 proposed by the present disclosure, and fig. 11 shows a view of the back shell 20 of the present launch system 2 when viewed from inside the launch system 2, and shows a cross-sectional view of plane B-B. The suction line 60 is clearly visible in the cross-sectional view of plane B-B. Said suction line 60 may be arranged substantially parallel to the front end surface 11 of the front housing 10, i.e. the suction line 60 is in a substantially vertical orientation when the dishwasher door 3 to which the dosing system 2 is mounted is closed.

The suction line 60 is integrally formed by the rear housing 20 and may take the form of a tube extending "through" the rear housing 20 from the reservoir 30. The pipette tubing 60 has a pipette interface 61 for connection to the pipette pump 40, i.e., a tubing section that extends into the recess 21 of the rear housing 20. The wicking interface 61 is best seen in fig. 10. Thus, the pipette interface 61 may be connected to tubing of the priming pump 40 for aspirating liquids in a known manner. The pipette interface 61 extends into the recess 21 of the rear case 20, and the charge pump 40 is also mounted to the recess 21 of the rear case 20, so that the tube for sucking liquid of the charge pump 40 can be easily connected with the pipette interface 61. Specifically, the connection of the liquid adding pump 40 and the liquid suction port 61 can be achieved by plugging the pipe for sucking the liquid to the liquid suction port, and the sealing member 55 can be provided at the plugging portion for sealing. In which fig. 9 shows a state after the charge pump 40 is mounted with the rear case 20.

In order to improve the space utilization rate, the present disclosure also makes a special design for the throwing pipeline 50. The dispensing pipe 50 is used for the liquid suction pump to dispense the sucked liquid to the area to be dispensed.

Reference is made to fig. 10 and 11, wherein fig. 10 shows a perspective view of the rear shell 20 of the launch system 2 proposed by the present disclosure, from which fig. 10 a portion of the launch pipeline 50 can be seen. Fig. 11 shows a view of the rear shell 20 of the present launch system 2 when viewed from inside the launch system 2, and shows a cross-sectional view of plane C-C. The launched pipeline 50 is clearly visible in the cross-sectional view of plane C-C.

One end of the dosing pipe 50 is connected to the pipe of the charging pump 40 for discharging the liquid and the other end opens into the area to be dosed. The end of the dosing pipe 50 is the dosing port non-return valve 511 as described above. In this way, the launched pipeline 50 takes the form of a pipeline that passes through the front and rear shells 10, 20 and extends into the recess 21 of the rear shell 20.

The dosing pipe 50 has a dosing interface 52 for connection to the priming pump 40, i.e. a pipe portion extending into the recess 21 of the back shell 20. The connection between the charging pump 40 and the dispensing interface 52 can be achieved by plugging the pipe for dispensing the liquid into the dispensing interface, and a sealing member 55 can be provided at the plugging portion for sealing.

Preferably, the launch interface 52 is arranged parallel to the front face 11 of the front housing 10, preferably, the launch conduit 50 extends L from the launch interface 52 to the launch port one-way valve 511, as shown in fig. 11, i.e. the launch conduit 50 comprises a vertical portion and a horizontal portion, the horizontal portion being at a lower position of the rear housing 20 to facilitate liquid drainage and space utilization.

Preferably, the launch conduit 50 comprises a front launch conduit portion 53 formed by the front shell 10, and a rear launch conduit portion 54 formed by the rear shell 20 and communicating with the front launch conduit portion 53. Wherein the front feeding duct portion 53 and the rear feeding duct portion 54 are preferably connected together by welding or plugging. Fig. 12 shows an embodiment in which the front drop pipe section 53 and the rear drop pipe section 54 are spliced together, a seal 55 being provided at the spliced parts of the front drop pipe section 53 and the rear drop pipe section 54, such that the seal 55 is located between the front drop pipe section 53 and the rear drop pipe section 54. The front launch pipe section 53 can be selectively plugged into the rear launch pipe section 54, or vice versa. Fig. 13 shows an embodiment where the front drop pipe section 53 and the rear drop pipe section 54 are welded together. The welding scheme can save the sealing element 55 required by the splicing mode, reduce the product cost, but requires the welding process to reach a certain standard.

Through the design of the feeding pipeline 50 and the imbibition pipeline 60 of the present disclosure, the space utilization rate is greatly improved because the feeding pipeline 50 and the imbibition pipeline 60 can be directly formed by the shell without an additional pipeline part which needs to be independently installed. Moreover, the dispensing interface 52 of the dispensing pipeline 50 and the liquid suction interface 61 of the liquid suction pipeline 60 both vertically extend in parallel with each other in the concave portion 21 of the rear shell 20, so that the present solution can vertically install the liquid feeding pump 40, and the joint thereof faces the bottom of the dispensing system 2, so that the design simplifies the installation of the liquid feeding pump 40, and can shorten the dispensing pipeline 50 and the liquid suction pipeline 60 while ensuring that the pump can fully suck the liquid in the liquid storage box, and meanwhile, the thickness of the liquid feeding pump assembly is minimized.

Reservoir chamber 30 may include a number of sub-chambers. In the illustrated embodiment, the reservoir 30 comprises two sub-cavities, wherein the dispensing system 2 is provided with two liquid suction pipes 60, the liquid pump 40 sucks liquid from the two sub-cavities via the two liquid suction pipes 60, respectively, and wherein the dispensing system 2 is provided with two dispensing pipes 50, and the liquid pump 40 dispenses the liquid from the two sub-cavities via the two dispensing pipes 50, respectively, to the area to be dispensed via two dispensing port check valves 511 located at the front end face 11 of the front housing 10. In other embodiments, a different number of subchambers may be provided, with a corresponding number of intake conduits 60 and dispensing conduits 50 being configured.

As mentioned before, the front shell 10 and the rear shell 20 are joined to each other to form an outer shell of the dosing system 2. The front case 10 and the rear case 20 may be fixed together by welding, bonding, etc., and are preferably welded. Generally, it is desirable to hide the interfacing portions of the front case 10 and the rear case 20 to form an aesthetic, integrated visual effect. Especially for the technical scheme of welding, if the welding surface is not hidden, the exposed welding craters can influence the appearance. Meanwhile, in order to improve space utilization, it is desirable that the structure for hiding the joint portion of the front case 10 and the rear case 20 occupies only a very small space.

To this end, the present disclosure proposes a novel design to achieve such an objective. In particular, with reference to fig. 14, at the rear shell 20 of the dosing system 2, a flange 22 is provided extending from its peripheral surface, which flange 22 can be used for mounting a sealing gasket 16, which sealing gasket 16 is used for sealing between the dosing system 2 and the dishwasher door 3, as for example shown in fig. 14. Meanwhile, the front case 10 is provided with a hemming structure 12, and the hemming structure 12 is a bent or bent wall structure that transitions by an angle of approximately 90 degrees from a direction extending away from the outer circumference of the front case 10 so that the hemming structure 12 can engage with the outer edge of the flange 22 of the rear case 20. Taking the embodiment of fig. 14 as an example, the hemming structure 12 comprises two plate structures substantially perpendicular to each other, and when the front case 10 and the rear case 20 are joined together, the outer side plate of the hemming structure 12 of the front case 10 is joined to the outer side of the flange 22 of the rear case 20, and the joint of the front case 10 and the rear case 20 is surrounded by the hemming structure 12 and the flange 22.

By such a construction, the flange 22 for mounting the sealing gasket 16 is effectively utilized as part of the joint hiding structure, so that the length and width of the entire dispensing system 2 is only slightly enlarged, i.e. effective hiding of the joint (e.g. crater) is achieved.

The dosing system 2 further comprises a level detection assembly 70 having a probe 71 for detecting the level of liquid in the reservoir 30, e.g. detecting whether the amount of detergent present in the reservoir is sufficient.

The liquid level detection assembly 70 is mounted to the recess 21 of the rear housing 20, and the probe 71 extends through the rear housing 20 into the reservoir chamber 30. When the metal probes 71 are all in contact with the liquid, the circuit of the probes 71 is in a conducting state, and the machine works normally. When at least one probe 71 is out of contact with the liquid, the circuit in which the probe 71 is located is open and the machine issues a corresponding indication, for example an indication of insufficient detergent.

The probe 71 of the level detection assembly 70 is typically a metal probe 71, and the level detection assembly 70 may also include a plastic base, as well as seals for and among other things. A sealing ring may be used to seal the gap between the probe 71 and the rear housing 20. The number of probes 71 may be multiple, for example one probe 71 per subcavity.

While exemplary embodiments of the dispensing system and dishwasher proposed by the present disclosure have been described in detail above with reference to preferred embodiments, it will be understood by those skilled in the art that numerous variations and modifications may be made to the specific embodiments described above, and that numerous combinations of the various features, structures and advantages proposed by the present disclosure may be made without departing from the concepts of the present disclosure, the scope of which is defined by the appended claims.

Claims (19)

1. A delivery system, comprising:

a front housing and a rear housing joined together to define a reservoir therebetween;

the liquid adding pump is configured to suck liquid from the liquid storage cavity and throw the liquid to an area to be thrown;

wherein at least a part of the rear shell bulges towards the front shell to form a convex part at a side of the rear shell facing towards the front shell and a concave part at a side of the rear shell facing away from the front shell, the charge pump being mounted to the rear shell and at least a part of it being arranged in the concave part of the rear shell, wherein the shape of the concave part corresponds to the shape of the at least a part of the charge pump arranged in the concave part.

2. A dosing system according to claim 1, characterized in that the filling pump delivers the liquid to the area to be dosed via a dosing pipe at a dosing opening at the front face of the front housing at a level close to the bottom of the reservoir chamber.

3. A dispensing system as defined in claim 2, characterized in that the dispensing opening is provided with a dispensing opening one-way valve, so that liquid can only flow out of the dispensing opening to the area to be dispensed and cannot flow from the area to be dispensed through the dispensing opening into the dispensing system.

4. A dosing system according to claim 2, characterized in that the dosing pipeline has a dosing interface for connection to a charge pump, the dosing interface being in the form of a pipeline extending into the recess of the back shell.

5. A dosing system according to claim 4, characterized in that the dosing interface is arranged parallel to the front end surface of the front shell, and that the dosing pipe extends L from the dosing interface to the dosing opening.

6. A dosing system according to claim 2, characterized in that the dosing pipeline comprises a front dosing pipeline portion formed by the front shell and a rear dosing pipeline portion formed by the rear shell and communicating with the front dosing pipeline portion.

7. A delivery system according to claim 6, wherein the front delivery pipe section and the rear delivery pipe section are joined together by welding.

8. A dosing system according to claim 6, characterized in that the front dosing pipe section and the rear dosing pipe section are joined together by a bayonet joint, and that a seal is provided at the bayonet parts of the front dosing pipe section and the rear dosing pipe section.

9. The dispensing system of claim 1 wherein said pump draws said liquid from a reservoir via a suction line, wherein said suction line is formed by said back housing.

10. A dispensing system as set forth in claim 9 wherein said fluid line is disposed parallel to the front face of the front housing.

11. A dispensing system as in claim 9, characterized in that said suction line has a suction interface for connection to a pump, said suction interface being in the form of a line extending into a recess of the rear housing.

12. A dispensing system in accordance with claim 1 in which said rear housing is provided with a flange extending from an outer peripheral surface thereof, said front housing being provided with a flange structure which engages an outer side of said flange when the front and rear housings are joined together and such that the junction of the front and rear housings is surrounded by said flange structure and said flange.

13. The dispensing system of claim 1 wherein the front housing defines a front housing subchamber baffle and the rear housing defines a rear housing subchamber baffle corresponding in position to the front housing subchamber baffle, the front housing subchamber baffle and the rear housing subchamber baffle abutting together when the front housing and the rear housing are joined together to divide the reservoir into at least two subchambers.

14. A dispensing system in accordance with claim 1 in which said front housing has a fill port in communication with the reservoir and the fill port has a seal cap assembly for sealing the reservoir.

15. A dispensing system in accordance with claim 1 in which said top wall of said rear housing is provided with an air inlet communicating with said reservoir, said air inlet being provided with an air inlet check valve.

16. A dosing system according to claim 1, wherein the reservoir comprises two sub-chambers, wherein the dosing system is provided with two liquid suction pipes via which a liquid pump sucks liquid from the two sub-chambers, respectively, and wherein the dosing system is provided with two dosing pipes via which liquid pump doses liquid from the two sub-chambers, respectively, to the area to be dosed via two dosing ports located at the front end face of the front shell.

17. The dispensing system of claim 1 further comprising a level detection probe assembly having a probe, wherein the level detection probe assembly is mounted to the recess of the rear housing such that the probe extends through the rear housing into the reservoir chamber.

18. Dishwasher, characterized in that it comprises a door and a dosing system according to any of claims 1-17, which dosing system is mounted on the door such that a front shell of the dosing system faces the interior of the dishwasher when the door is closed.

19. The dishwasher of claim 18, wherein the rear housing is provided with a flange extending from an outer periphery thereof, wherein a sealing gasket is provided between the flange and the door.

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