Dispensing system and dishwasher

Abstract

Disclosed in the present application are a dispensing system and a dishwasher. The dispensing system comprises a pump body, a communication structure, and a liquid storage structure; the pump body has an input connector and an output connector; the communication structure comprises a first interface, a second interface, and a third interface which are in mutual communication, the first interface is connected to the output connector, the second interface is configured to be in communication with a water supply end, and the third interface is configured to be in communication with a washing cavity of a dishwasher; the liquid storage structure is configured to accommodate a detergent, and a liquid outlet connector of the liquid storage structure is directly connected to the input connector, wherein the pump body draws the detergent of the liquid storage structure and injects said detergent into the communication structure by means of the first interface, and a water flow of the water supply end is injected into the communication structure by means of the second interface, so as to drive the detergent in the communication structure to be injected into the washing cavity via the third interface.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] The present application claims priority of Chinese Patent Application No. 202323311951.4, in the title of "DISPENSING SYSTEM AND DISHWASHER", filed on December 05, 2023, in the China National Intellectual Property Administration, the entire contents of which are hereby incorporated by reference in their entirety.TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of kitchen appliances, particularly to a dispensing system and a dishwasher.BACKGROUND

[0003] Dishwashers are automated devices designed to clean tableware such as bowls, chopsticks, plates, dishes, knives, and forks. A conventional dishwasher typically incorporates a dedicated detergent dispensing system that stores washing agents and channels them into the washing cavity in the main body of the dishwasher, facilitating utensil cleansing.

[0004] In the related art, the extended length of dispensing pipelines often leads to residual detergent accumulation after each dispensing cycle. Such prolonged accumulation poses potential clogging hazards, compromising detergent dosing accuracy and consequently diminishing the dishwasher's washing effect.SUMMARY OF THE DISCLOSURE

[0005] The embodiments of the present disclosure provide a dispensing system and a dishwasher that can effectively reduce the risk of blockages caused by residual detergent in the dispensing system during transportation.

[0006] In a first aspect, the present disclosure provides a dispensing system, including: a pump body, including an inlet connector and an outlet connector; a communication structure, including a first port, a second port, and a third port that are interconnected; wherein the first port is connected to the outlet connector, the second port is configured to be in communication with a water supply end, and the third port is configured to be in communication with a washing cavity of the dishwasher; and a liquid storage structure, configured to accommodate detergent; wherein a liquid outlet connector of the liquid storage structure is directly connected to the inlet connector; wherein the pump body is configured to draw the detergent from the liquid storage structure through the first port and inject the detergent into the communication structure, and water flow from the water supply end is configured to be injected into the communication structure through the second port to drive the detergent in the communication structure to be injected into the washing cavity through the third port.

[0007] In some embodiments, the communication structure includes a first connecting pipe; two opposite ends of the first connecting pipe respectively serve as the first port and the third port.

[0008] In some embodiments, the communication structure includes a second connecting pipe; an end of the second connecting pipe passes through a wall of the first connecting pipe and is in communication with the interior of the first connecting pipe; the other end of the second connecting pipe away from the first connecting pipe serve as the second port.

[0009] In some embodiments, the distance from a connection point of the second connecting pipe and the first connecting pipe to the first port is less than the distance from the connection point of the second connecting pipe and the first connecting pipe to the third port.

[0010] In some embodiments, the first connecting pipe and the second connecting pipe are arranged at an angle, and the second connecting pipe extends in a direction away from the first connecting pipe along a flow direction of the water flow.

[0011] In some embodiments, the first connecting pipe and / or the second connecting pipe are configured as arc-shaped pipes.

[0012] In some embodiments, the first connecting pipe includes a first segment, a second segment, and a third segment, which are connected in series; the inner diameter of the second segment is less than each of the inner diameter of the first segment and the inner diameter of the third segment; the second segment is in communication with the second connecting pipe, and the inner diameter of the second connecting pipe is less than the inner diameter of the second segment.

[0013] In some embodiments, the second port is connected to at least one of a water inlet valve, a breathing apparatus, and a water softener.

[0014] In some embodiments, the second port is connected to the water inlet valve and the breathing apparatus; the breathing apparatus is connected to a downstream side of the water inlet valve, and the second port is connected to an end of the breathing apparatus away from the water inlet valve.

[0015] In some embodiments, the second port is connected to the water inlet valve, the breathing apparatus, and the water softener; the breathing apparatus is connected to a downstream side of the water inlet valve, and the water softener is connected to a downstream side of the breathing apparatus; the second port is connected to an end of the water softener away from the breathing apparatus.

[0016] In some embodiments, the second port is connected to a water inlet valve, and the third port is connected to a breathing apparatus and / or a water softener.

[0017] In a second aspect, the present disclosure provides a dishwasher, including the dispensing system as above.

[0018] The dispensing system and the dishwasher according to the embodiments of the present disclosure provide a communication structure arranged with a first port, a second port, and a third port that are interconnected, while directly connecting an inlet connector of the pump body to a liquid outlet connector of the liquid storage structure. In this way, the user can first store the detergent in the liquid storage structure, then have the pump body draw the detergent from the liquid storage structure 30 through the first port into the communication structure, while the water flow from the water supply end enters the communication structure through the second port, thereby driving the detergent within the communication structure to flow through the third port into the washing cavity and thus completing the detergent dispensing process.

[0019] When the detergent in the liquid storage structure is dispensed into the communication structure via the pump body, the water flow introduced through the second port helps rinse any residual detergent inside the communication structure. This may effectively reduce the likelihood of detergent coagulating within the communication structure and minimizes the risk of detergent residue causing blockages. Furthermore, since there is no additional pipe connection between the pump body and the liquid storage structure, the direct connection between the pump body and the liquid storage structure 30 may effectively avoid detergent loss in the pipes, thereby further reducing the probability of blockage. This may improve the accuracy of detergent dispensing in the dishwasher, thereby effectively ensuring stable and reliable dishwashing performance of the dishwasher.BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the technical solutions in the embodiments or exemplary technologies of the present disclosure, the following is a brief introduction to the drawings used in the description of the embodiments or exemplary technologies. It is obvious that the drawings described below are only some embodiments of the present disclosure. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative labor. FIG. 1 is a structural schematic view of a dishwasher. FIG. 2 is a structural schematic view of a dispensing system according to some embodiments of the present disclosure. FIG. 3 is a structural schematic view of a communication structure of a dispensing system according to some embodiments of the present disclosure. FIG. 4 is a structural schematic view of a communication structure of a dispensing system according to other embodiments of the present disclosure. FIG. 5 is a structural schematic view of a communication structure of a dispensing system according to further other embodiments of the present disclosure. FIG. 6 is a structural schematic view of a communication structure of a dispensing system according to still other embodiments of the present disclosure. FIG. 7 is a flow gram of a dispensing system according to some embodiments of the present disclosure. FIG. 8 is a flow gram of a dispensing system according to other embodiments of the present disclosure. FIG. 9 is a flow gram of a dispensing system according to further other embodiments of the present disclosure. Reference numerals:

[0021] 1000, dishwasher; 100, main body; 200, door body; 100, dispensing system; 30, liquid storage structure; 31, liquid outlet connector; 40, communication structure; 41, first connecting pipe; 41a, first segment; 41b, second segment; 41c, third segment; 411, first port; 412, third port; 42, second connecting pipe; 421, second port; 50, pump body; 51, inlet connector; 52, outlet connector; 60, water inlet valve; 70, breathing apparatus; 80, water softener.

[0022] The objectives, functional features, and advantages of the present disclosure will be further explained with reference to the accompanying drawings in conjunction with the embodiments.DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the present disclosure clearer, the following sections will provide a detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings.

[0024] In the following description, unless otherwise indicated, the same reference numerals refer to the same or similar elements in different drawings. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0025] In the description of the present disclosure, it is understood that terms such as "first", "second", etc. are solely for descriptive purposes and should not be understood as indicating or implying relative importance. For those skilled in the art, the specific meanings of the above terms in the present disclosure may be understood based on the specific circumstances. Furthermore, unless otherwise specified in the description of the present disclosure, "multiple" refers to two or more. "And / or" describes a relationship between associated objects, indicating that three relationships may exist, for example, A and / or B may indicate: A exists alone, A and B exist together, or B exists alone. The character " / " generally indicates that the associated objects before and after it are in an "or" relationship.

[0026] Unless otherwise defined, all technical and scientific terms mentioned in this specification have the same meanings as those generally understood by those skilled in the art. The terms mentioned in this specification are intended solely to describe specific embodiments and are not intended to limit the scope of the present disclosure. The term "and / or" used herein includes any one and all combinations of one or more of the listed items.

[0027] Dishwashers are automated devices designed to clean tableware such as bowls, chopsticks, plates, dishes, knives, and forks. A conventional dishwasher typically incorporates a dedicated detergent dispensing system that stores washing agents and channels them into the washing cavity in the main body of the dishwasher, facilitating utensil cleansing.

[0028] In the related art, the extended length of dispensing pipelines often leads to residual detergent accumulation after each dispensing cycle. Such prolonged accumulation poses potential clogging hazards, compromising detergent dosing accuracy and consequently diminishing the dishwasher's washing effect.

[0029] Referring to FIGS. 1 and 2, a first aspect of the present disclosure provides a dishwasher 1000. In the embodiments of the present disclosure, the dishwasher 1000 includes a main body 100, a door body 200, and a dispensing system 100.

[0030] The main body 100 may have a square structure and define a washing cavity with an opening (not shown). It can be understood that the washing cavity is configured to accommodate tableware and is in communication with the dispensing system 100. The main body 100 may be made of metal to ensure that the main body 100 has high strength and durability. Additionally, metal has good thermal conductivity and heat transfer properties, enabling the main body 100 to perform better during heat exchange and condensation drying processes. Of course, the main body 100 may be made of plastic to achieve the advantage of lighter weight. The present disclosure does not impose any restrictions on this aspect.

[0031] The door body 200 may have a square structure to match the cross-sectional shape of the washing cavity of the main body 100, thereby enabling the washing cavity to be opened or closed when the door body 200 rotates. The door body 200 may be made of glass, such as tempered glass with excellent strength properties, which allows the door body 200 to have excellent impact and pressure resistance while further enabling users to directly observe the inside of the washing cavity from the outside, enhancing the user experience. Of course, the door body 200 may be made of metal to enhance its structural strength. The present disclosure does not impose any restrictions on this aspect.

[0032] To reduce detergent residue during the dispensing process, the present disclosure focuses on improving the dispensing system 100. Referring to FIGS. 2 and 3, in some embodiments of the present disclosure, the dispensing system 100 includes a pump body 50, a liquid storage structure 30, and a communication structure 40.

[0033] The pump body 50 may be a metering pump, which can draw detergent from the liquid storage structure 30 and transports the detergent to the communication structure 40, thereby realizing the detergent transportation. In some structural configurations, the inlet connector 51 may be a male connector, and a liquid outlet connector 31 of the liquid storage structure 30 may be a female connector. When the inlet connector 51 and the liquid outlet connector 31 are connected, the inlet connector 51 extends into the liquid outlet connector 31 to ensure precise alignment and prevent detergent leakage.

[0034] The liquid storage structure 30 may be a rectangular block for ease of production and installation. The main structure of the liquid storage structure 30 may be made of transparent plastic material, such as polypropylene (PP), polystyrene (PS), or polycarbonate (PC), allowing users to directly observe the liquid level inside the liquid storage structure 30 from the outside, thereby obtaining information about the liquid volume in the liquid storage structure 30, which is more convenient and improves the user experience. Of course, the main structure of the liquid storage structure 30 may be made of metal.

[0035] The communication structure 40 includes a first port 411, a second port 421, and a third port 412 that are interconnected, meaning that the communication structure 40 may be a three-way pipe or a four-way pipe with multiple ports. The first port 411 may be directly connected to the outlet connector 52, specifically via a plug-in or sleeve connection, to further reduce detergent loss. Alternatively, the first port 411 may be indirectly connected to the outlet connector 52 via a pipe. The second port 421 is configured to be in communication with a water supply end, that is, the second port 421 can be connected to a water supply structure of the dishwasher 1000 or the second port 421 can be directly connected to an external water source. The third port 412 is configured to be in communication with the washing cavity of the dishwasher 1000. It should be noted that the dishwasher 1000 of the present disclosure may further include a spray assembly, which can spray and clean the tableware inside the washing cavity. Thus, the third port 412 of the communication structure 40 may be in communication with a water inlet of the spray assembly to achieve indirect communication with the washing cavity via the spray from the spray assembly, or the third port 412 of the communication structure 40 may be directly connected to the washing cavity. The shapes and sizes of openings of the first port 411, the second port 421, and the third port 412 may be the same, allowing the ports of the communication structure 40 with the outlet connector 52, the water supply end, and the washing cavity to be arbitrarily changed, thereby improving installation convenience and efficiency.

[0036] The dispensing system 100 and the dishwasher 1000 according to the embodiments of the present disclosure provide a communication structure 40 arranged with a first port 411, a second port 421, and a third port 412 that are interconnected, while directly connecting an inlet connector 51 of the pump body 50 to a liquid outlet connector 31 of the liquid storage structure 30. In this way, the user can first store the detergent in the liquid storage structure 30, then have the pump body 50 draw the detergent from the liquid storage structure 30 through the first port 411 into the communication structure 40, while the water flow from the water supply end enters the communication structure 40 through the second port 421, thereby driving the detergent within the communication structure 40 to flow through the third port 412 into the washing cavity and thus completing the detergent dispensing process.

[0037] When the detergent in the liquid storage structure 30 is dispensed into the communication structure 40 via the pump body 50, the water flow introduced through the second port 421 helps rinse any residual detergent inside the communication structure 40. This may effectively reduce the likelihood of detergent coagulating within the communication structure 40 and minimizes the risk of detergent residue causing blockages. Furthermore, since there is no additional pipe connection between the pump body 50 and the liquid storage structure 30, the direct connection between the pump body 50 and the liquid storage structure 30 may effectively avoid detergent loss in the pipes, thereby further reducing the probability of blockage. This may improve the accuracy of detergent dispensing in the dishwasher 1000, thereby effectively ensuring stable and reliable dishwashing performance of the dishwasher 1000.

[0038] Referring to FIGS. 2 and 3, in some embodiments, the communication structure 40 includes a first connecting pipe 41 and a second connecting pipe 42. An end of the second connecting pipe 42 passes through a wall of the first connecting pipe 41 and is in communication with the interior of the first connecting pipe 41. Two opposite ends of the first connecting pipe 41 respectively serve as the first port 411 and the third port 412, and another end of the second connecting pipe 42 away from the first connecting pipe 41 serve as the second port 421. The first connecting pipe 41 and the second connecting pipe 42 may be in a one-piece structure, thereby reducing the number of components in the communication structure 40, simplifying the overall structure of the communication structure 40, and enhancing its overall structural strength. By allowing the detergent flowing out from the second connecting pipe 42 to enter the first connecting pipe 41 and flow along the flow direction of the first connecting pipe 41, there is no need to additionally provide a space for mixing detergent and water. This may simplify the structure of the communication structure 40, facilitate production and manufacturing, and make installation easier while reducing the space occupied in the installation cavity, thereby further achieving the miniaturization of the dishwasher 1000.

[0039] Furthermore, the distance between a connection point of the second connecting pipe 42 and the first connecting pipe 41 and the first port 411 is less than the distance between the connection point of the second connecting pipe 42 and the first connecting pipe 41 and the third port 412, which may allow clean water from the water supply end to enter the communication structure 40 near the first port 411. In this way, when detergent residue accumulates near the first port 411 (i.e., near the liquid storage structure 30), it can be dispersed by the clean water from the water supply end. The increase in the passage length of the clean water from the water supply end passing through the first connecting pipe 41 further improves the effect of flushing the detergent remaining inside the communication structure 40.

[0040] In some embodiments, the first connecting pipe 41 and / or the second connecting pipe 42 are configured as arc-shaped pipes. Referring to FIG. 3, the first connecting pipe 41 and the second connecting pipe 42 may each be configured in a "C"-shaped or other arc-shaped configuration. In this way, the first connecting pipe 41 and the second connecting pipe 42 may be adapted to special installation environments; further, the arc-shaped first connecting pipe 41 may extend the passage length of the clean water and detergent, thereby increasing the mixing time between the clean water and detergent and thus improving the washing effect. Referring to FIG. 4, in other embodiments, for the second connecting pipe 42 that is in the "C"-shaped configuration, the height of the second port 421 is greater than the height of the connection point between the second connecting pipe 42 and the first connecting pipe 41, such that the second connecting pipe 42 can more easily direct the clean water into the first connecting pipe 41, thereby reducing detergent residue and improving washing effect.

[0041] Referring to FIG. 5, in other embodiments, the first connecting pipe 41 and the second connecting pipe 42 are arranged at an angle, and the second connecting pipe 42 extends in a direction away from the first connecting pipe 41 along the flow direction of water. Specifically, the first connecting pipe 41 and the second connecting pipe 42 are arranged at an angle, where the first connecting pipe 41 and the second connecting pipe 42 are connected on one end, and the second connecting pipe 42 extends in a direction away from the first connecting pipe 41 along the flow direction of water. In this way, the detergent flowing out from the second connecting pipe 42 can flow along the flow direction of water in the first connecting pipe 41, enabling the detergent to be more easily flushed toward the third port 412 to enter the washing cavity, thereby further reducing the retention of detergent in the communication structure 40 and thus improving the washing effect.

[0042] In some structural configurations, the first connecting pipe 41 and the second connecting pipe 42 are length-adjustable pipes, which allows the lengths of the first connecting pipe 41 and the second connecting pipe 42 to be adjustable, enabling adaptation to various installation environments. In some embodiments, the first connecting pipe 41 and the second connecting pipe 42 are flexible pipes, which allows the first connecting pipe 41 and the second connecting pipe 42 to be easily bent and deformed, enabling adaptation to various installation environments.

[0043] Referring to FIG. 6, in other embodiments, the first connecting pipe 41 includes a first segment 41a, a second segment 41b, and a third segment 41c, which are connected in series. The inner diameter of the second segment 41b is less than each of the inner diameter of the first segment 41a and the inner diameter of the third segment 41c; the second segment 41b is in communication with the second connecting pipe 42, and the inner diameter of the second connecting pipe 42 is less than the inner diameter of the second segment 41b. Through the above configuration, the first connecting pipe 41 and the second connecting pipe 42 form a Venturi pipe structure. It should be noted that when restricted fluid flows through a narrowed flow cross-section, the fluid velocity increases, and the velocity is inversely proportional to the flow cross-section. According to Bernoulli's principle, an increase in velocity is accompanied by a decrease in fluid pressure, which is the common Venturi effect. This effect refers to the phenomenon where low pressure is generated near high-speed flowing fluid, thereby creating an adhesive force. When water flows through the connection point between the first connecting pipe 41 and the second connecting pipe 42, the smaller inner diameter of the second segment 41b, which is in communication with the second connecting pipe 42, results in lower pressure, thereby drawing the detergent retained in the second connecting pipe 42 into the first connecting pipe 41.

[0044] The above describes various structural embodiments of the communication structure 40 to enhance washing effect. Additionally, the washing effect may be further improved by installing other components at the second port 421 and the third port 412 of the communication structure 40.

[0045] Referring to FIGS. 7 to 9, in some embodiments, the second port 421 is connected to at least one of a water inlet valve 60, a breathing apparatus 70, and a water softener 80. The water inlet valve 60 is disposed on the second port 421 and can control water entering the communication structure 40 through the second port 421 to regulate the water intake volume during each washing cycle. The breathing apparatus 70 is configured to connect the communication structure 40 to the external atmosphere to remove air bubbles from the water flow, preventing excessive gas pressure during operation and thus protecting the internal pipes and components of the dishwasher 1000 from damage. The water softener 80 is configured to soften the water entering the communication structure 40 through the second port 421 to form softened water. The softened water refers to water containing calcium salts and magnesium salts less than 50 mg / L. When the softened water is used for washing, it can achieve better washing performance and save detergent, thereby improving washing efficiency. The above design may be configured for dishwashers 1000 with larger installation spaces at the second port 421. It should be noted that the water inlet valve 60, the breathing apparatus 70, and the water softener 80 may be directly connected or connected via pipes. The present disclosure does not impose any restrictions on this aspect.

[0046] In some embodiments, as shown in FIG. 7, the second port 421 is connected to a water inlet valve 60 and a breathing apparatus 70. The breathing apparatus 70 is connected to the downstream side of the water inlet valve 60, and the second port 421 is connected to an end of the breathing apparatus 70 away from the water inlet valve 60. In this way, after the liquid storage structure 30 injects detergent into the communication structure 40 via the pump body 50, the water inlet valve 60 opens to allow water to enter from the water supply end. The water flows through a flow meter on the breathing apparatus 70 and then enters the communication structure 40, flushing the detergent within the communication structure 40 into the washing cavity of the dishwasher 1000 for washing. This allows precise control of the water supply volume at the water inlet end, thereby achieving concentration control of the detergent.

[0047] In other embodiments, as shown in FIG. 8, the second port 421 is connected to a water inlet valve 60, a breathing apparatus 70, and a water softener 80. The breathing apparatus 70 is connected to the downstream side of the water inlet valve 60, and the water softener 80 is connected to the downstream side of the breathing apparatus 70. The second port 421 is connected to an end of the water softener 80 away from the breathing apparatus 70. In this way, after the detergent is injected into the communication structure 40 via the pump body 50, the water inlet valve 60 opens to allow water to enter from the water supply end. The water flows through the flow meter on the breathing apparatus 70 and then enters a resin chamber of the water softener 80. The resin chamber softens the water, which then enters the communication structure 40, flushing the detergent within the communication structure 40 into the washing cavity of the dishwasher 1000 for washing. This not only enables precise control of the water supply volume at the water supply end but also ensures that the water entering the communication structure 40 is softened, resulting in better washing performance and reduced detergent consumption, thereby enhancing overall washing efficiency.

[0048] In other embodiments, as shown in FIG. 9, the second port 421 is connected to a water inlet valve 60, and the third port 412 is connected to a breathing apparatus 70 and / or a water softener 80. By positioning the breathing apparatus 70 and the water softener 80 at the third port 412, the above design may be configured for dishwashers 1000 with larger installation spaces at the third port 412. Similarly, the breathing apparatus 70 can communicate between the third port 412 and the external atmosphere to remove air bubbles from the water flow, preventing excessive gas pressure during operation and thus protecting the internal pipes and components of the dishwasher 1000 from damage. The water softener 80 softens the water passing through the third port 412 to form softened water, thereby improving the washing effect.

[0049] In other embodiments, the water inlet valve 60 and the breathing apparatus 70 may be connected to the second port 421, while the third port 412 is connected to the water softener 80.

[0050] In the drawings, the same or similar reference numerals correspond to the same or similar components. In the description of the present disclosure, it should be understood that terms such as "upper", "lower", "left", and "right", etc. indicating directions or positions are based on the directions or positions shown in the drawings, solely for the purpose of facilitating the description of the present disclosure and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, or operate in a specific orientation. Therefore, the terms to describe positional relationships in the drawings are provided for illustrative purposes only and should not be construed as limiting the scope of the present disclosure. For those skilled in the art, the specific meaning of the above terms may be understood based on the specific circumstances.

[0051] The above is merely some embodiments of the present disclosure and is not intended to limit the scope of the present disclosure. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present disclosure should be included within the scope of the present disclosure.

Claims

1. A dispensing system, applied to a dishwasher, wherein the dispensing system comprises: a pump body, comprising an inlet connector and an outlet connector; a communication structure, comprising a first port, a second port, and a third port that are interconnected, wherein the first port is connected to the outlet connector, the second port is configured to be in communication with a water supply end, and the third port is configured to be in communication with a washing cavity of the dishwasher; and a liquid storage structure, configured to accommodate detergent, wherein a liquid outlet connector of the liquid storage structure is directly connected to the inlet connector, wherein the detergent is drawn from the liquid storage structure by the pump body and injected into the communication structure through the first port, and water flow from the water supply end is configured to be injected into the communication structure through the second port to drive the detergent in the communication structure into the washing cavity through the third port.

2. The dispensing system according to claim 1, wherein the communication structure comprises a first connecting pipe and a second connecting pipe, wherein: an end of the second connecting pipe passes through a wall of the first connecting pipe and is in communication with an interior of the first connecting pipe; two opposite ends of the first connecting pipe respectively serve as the first port and the third port; and the other end of the second connecting pipe away from the first connecting pipe serves as the second port.

3. The dispensing system according to claim 2, wherein a distance from a connection point of the second connecting pipe and the first connecting pipe to the first port is less than a distance from the connection point of the second connecting pipe and the first connecting pipe to the third port.

4. The dispensing system according to claim 3, wherein the first connecting pipe and the second connecting pipe are arranged at an angle to each other, and the second connecting pipe extends in a direction away from a flow direction of the water flow in the first connecting pipe.

5. The dispensing system according to any one of claims 2-4, wherein the first connecting pipe and / or the second connecting pipe are configured as arc-shaped pipes.

6. The dispensing system according to any one of claims 2-4, wherein the first connecting pipe comprises a first segment, a second segment, and a third segment, which are connected in series, wherein: an inner diameter of the second segment is less than inner diameters of the first segment and the third segment; and the second segment is in communication with the second connecting pipe, and an inner diameter of the second connecting pipe is less than the inner diameter of the second segment.

7. The dispensing system according to any one of claims 1-6, wherein the second port is connected to at least one of a water inlet valve, a breathing apparatus, and a water softener.

8. The dispensing system according to claim 7, wherein: the second port is connected to the water inlet valve and the breathing apparatus, wherein the breathing apparatus is connected to a downstream side of the water inlet valve, and the second port is connected to an end of the breathing apparatus away from the water inlet valve; or the second port is connected to the water inlet valve, the breathing apparatus, and the water softener, wherein: the breathing apparatus is connected to a downstream side of the water inlet valve; the water softener is connected to a downstream side of the breathing apparatus; and the second port is connected to an end of the water softener away from the breathing apparatus.

9. The dispensing system according to any one of claims 1-6, wherein the second port is connected to a water inlet valve, and the third port is connected to a breathing apparatus and / or a water softener.

10. A dishwasher, comprising the dispensing system according to any one of claims 1-9.

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