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

Dispensing systems and dishwashers

[0001] Related applications

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on December 5, 2023, with application number 2023233119514 and application name “Dispensing System and Dishwasher”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the technical field of kitchen appliances, and in particular to a dispensing system and a dishwasher. Background Art

[0004] A dishwasher is a device that automatically washes dishes such as bowls, chopsticks, plates, dishes, knives, and forks. Traditional dishwashers typically have a dedicated detergent dispensing system that stores and delivers detergent into the dishwasher's wash chamber, where it washes the dishes.

[0005] In the related art, since the delivery pipe of the delivery system is long, the detergent is easily retained in the delivery pipe after delivery. After a long period of accumulation, it is easy to cause blockage hazards, resulting in inaccurate detergent delivery, thereby affecting the washing effect of the dishwasher.

[0006] Summary of the Invention

[0007] The embodiments of the present application provide a delivery system and a dishwasher, which can effectively reduce the potential blockage risk caused by residual detergent during transportation of the delivery system.

[0008] In a first aspect, an embodiment of the present application provides a delivery system, the delivery system comprising:

[0009] A pump body, the pump body having an input connector and an output connector;

[0010] a communication structure, the communication structure comprising a first interface, a second interface, and a third interface connected to each other, the first interface being connected to the output connector, the second interface being configured to communicate with a water supply end, and the third interface being configured to communicate with a washing chamber of the dishwasher; and

[0011] a liquid storage structure, the liquid storage structure being configured to accommodate detergent, the liquid outlet connector of the liquid storage structure being directly connected to the liquid input connector;

[0012] In which, the pump body sucks the detergent from the liquid storage structure and injects it into the connecting structure through the first interface, and the water flow from the water supply end is injected into the connecting structure through the second interface, so as to drive the detergent in the connecting structure to be injected into the washing chamber along the third interface.

[0013] In some embodiments, the communication structure includes a first connecting pipe, and opposite ends of the first connecting pipe are respectively configured as the first interface and the third interface.

[0014] In some embodiments, the connecting structure includes a second connecting tube, one end of which passes through the tube wall of the first connecting tube and is connected to the interior of the first connecting tube, and the end of the second connecting tube facing away from the first connecting tube is configured as the second interface.

[0015] In some embodiments, the distance between the connecting point of the second connecting pipe and the first connecting pipe and the first interface is smaller than the distance between the connecting point of the second connecting pipe and the first connecting pipe and the third interface.

[0016] In some embodiments, the first connecting pipe and the second connecting pipe are arranged at an angle, and the second connecting pipe extends along a water flow direction away from the first connecting pipe.

[0017] In some embodiments, the first connecting pipe and / or the second connecting pipe are configured as arc-shaped pipes. In some embodiments, the first connecting pipe includes a first sub-segment, a second sub-segment, and a third sub-segment that are sequentially connected, the inner diameter of the second sub-segment being smaller than the inner diameters of the first sub-segment and the third sub-segment, the second sub-segment being connected to the second connecting pipe, and the inner diameter of the second connecting pipe being smaller than the inner diameter of the second sub-segment.

[0018] In some embodiments, the second interface is connected to at least one of a water inlet valve, a breather, and a water softener.

[0019] In some embodiments, the second interface is connected to the water inlet valve and the respirator, the respirator is connected downstream of the water inlet valve, and the second interface is connected to an end of the respirator away from the water inlet valve.

[0020] In some embodiments, the second interface is connected to the water inlet valve, the breather and the water softener, the breather is connected downstream of the water inlet valve, the water softener is connected downstream of the breather, and the second interface is connected to one end of the water softener away from the breather.

[0021] In some embodiments, the second interface is connected to a water inlet valve, and the third interface is connected to a breather and / or a water softener.

[0022] In a second aspect, an embodiment of the present application provides a dishwasher comprising the above-mentioned dispensing system.

[0023] The dispensing system and dishwasher according to the embodiments of the present application are provided with a communication structure having a first interface, a second interface, and a third interface, and the input connector of the pump body is directly connected to the liquid outlet connector of the liquid storage structure. Thus, the user can first store detergent in the liquid storage structure, and then the pump body draws the detergent from the liquid storage structure through the first interface and injects it into the communication structure. Simultaneously, water from the water supply end is injected into the communication structure through the second interface, thereby driving the detergent in the communication structure along the third interface and into the washing chamber, thereby completing the detergent dispensing process.

[0024] In this way, when the detergent in the liquid storage structure is delivered into the connecting structure through the pump body, combined with the introduction of water flow from the second interface to flush the detergent retained inside the connecting structure, it can effectively reduce the condensation of detergent inside the connecting structure, so as to reduce the possibility of detergent remaining in the connecting structure to cause blockage. Moreover, since there is no additional pipeline connection between the pump body and the liquid storage structure, and they are directly connected, the loss of detergent in the pipeline can be effectively avoided, and the probability of blockage is further reduced. In this way, the accuracy of the detergent delivery amount of the dishwasher is improved, and the dishwashing cleaning effect of the dishwasher can be effectively guaranteed to be stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments or exemplary technologies of the present application, the following briefly introduces the drawings required for use in the description of the embodiments or exemplary technologies. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without any creative work.

[0026] Figure 1 is a schematic structural diagram of a dishwasher;

[0027] FIG2 is a schematic diagram of the structure of the delivery system of the present application;

[0028] FIG3 is a schematic diagram of the structure of the connection structure of the delivery system of the present application;

[0029] FIG4 is a schematic structural diagram of another embodiment of the communication structure of the delivery system of the present application;

[0030] FIG5 is a schematic structural diagram of another embodiment of the communication structure of the delivery system of the present application;

[0031] FIG6 is a structural diagram of yet another embodiment of the communication structure of the delivery system of the present application;

[0032] FIG7 is a flow path diagram of an embodiment of the delivery system of the present application;

[0033] FIG8 is a flow path diagram of another embodiment of the delivery system of the present application;

[0034] FIG9 is a flow path diagram of another embodiment of the delivery system of the present application.

[0035] Explanation of the accompanying drawings: 1000, dishwasher; 100, machine body; 200, door body; 100, dispensing system; 30, liquid storage structure; 31, liquid outlet connector; 40, connecting structure; 41, first connecting pipe; 41a, first subsection; 41b, second subsection; 41c, third subsection; 411, first interface; 412, third interface; 42, second connecting pipe; 421, second interface; 50, pump body; 51, input connector; 52, output connector; 60, water inlet valve; 70, respirator; 80, water softener.

[0036] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of this application clearer, the following part will further describe the embodiments of this application in detail with reference to the accompanying drawings.

[0038] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application, as detailed in the appended claims.

[0039] In the description of this application, it should be understood that the terms "first", "second", etc. are configured only for descriptive purposes and are not to be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, in the description of this application, unless otherwise specified, "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0041] A dishwasher is a device that automatically washes dishes such as bowls, chopsticks, plates, dishes, knives, and forks. Traditional dishwashers typically have a dedicated detergent dispensing system that stores and delivers detergent into the dishwasher's wash chamber, where it washes the dishes.

[0042] In the related art, since the delivery pipe of the delivery system is long, the detergent is easily retained in the delivery pipe after delivery. After a long period of accumulation, it is easy to cause blockage hazards, resulting in inaccurate detergent delivery, thereby affecting the washing effect of the dishwasher.

[0043] 1 and 2 , a first aspect of the present application provides a dishwasher 1000 . In an embodiment of the present application, the dishwasher 1000 includes a body 100 , a door 200 , and a dispensing system 100 .

[0044] The body 100 may be square in structure and may be formed with a washing chamber (not shown) having an opening. It is understood that the washing chamber is configured to accommodate tableware and is connected to the dispensing system 100. The body 100 may be made of metal to provide the body 100 with higher strength and durability. Metal also has better thermal conductivity and heat transfer properties, which allows the body 100 to perform better during heat exchange and condensation drying. Of course, the body 100 may also be made of plastic to provide the body 100 with the advantage of being lighter in weight, which is not a limitation in the present embodiment.

[0045] The door body 200 can be square in structure to match the cross-sectional shape of the washing chamber of the machine body 100, so that the washing chamber can be opened or closed by rotating the door body 200. The door body 200 can be made of glass, for example, tempered glass with excellent strength. In this way, the door body 200 has excellent impact and pressure resistance, and the user can also directly observe the situation inside the washing chamber from the outside through the door body 200, providing a better user experience. Of course, the door body 200 can also be made of metal to ensure that the door body 200 itself has better strength, and this application does not impose any restrictions on this.

[0046] In order to reduce the residual detergent during the dispensing process, the present application focuses on improving the dispensing system 100. Referring to Figures 2 and 3, in an embodiment of the present application, the dispensing system 100 includes a pump body 50, a liquid storage structure 30 and a connecting structure 40.

[0047] The pump body 50 can be a metering pump that draws detergent from the liquid storage structure 30 and delivers it to the communication structure 40, thereby providing a powered transport of the detergent. In some configurations, the input connector 51 can be male, and the outlet connector 31 of the liquid storage structure 30 can be female. During docking, the input connector 51 partially extends into the outlet connector 31, ensuring precise docking and preventing detergent leakage.

[0048] The liquid storage structure 30 can be in the shape of a rectangular block to facilitate production and installation. The main structure of the liquid storage structure 30 can be made of a transparent plastic material, such as PP (Polypropylene), PS (Polystyrene) or PC (Polycarbonate), etc., so that the user can directly observe the liquid level in the liquid storage structure 30 from the outside to obtain the liquid level information of 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 can also be made of metal.

[0049] The communication structure 40 includes a first interface 411, a second interface 421, and a third interface 412, which are interconnected. That is, the communication structure 40 can be a conductive structure with multiple interfaces, such as a three-way pipe or a four-way pipe. The first interface 411 can be directly connected to the output connector 52, specifically by plugging or sleeve connection, to further reduce detergent loss. Alternatively, the first interface 411 can be indirectly connected to the output connector 52 via a guide. The second interface 421 is configured to communicate with the water supply end, that is, it can be connected to the water supply structure of the dishwasher 1000, or the second interface 421 can also be directly connected to the external water source of the dishwasher 1000. The third interface 412 is configured to communicate with the washing chamber of the dishwasher 1000. It should be noted that the dishwasher 1000 of the present application also includes a spray assembly that can spray and clean the dishes in the washing chamber. Therefore, the third interface 412 of the connecting structure 40 can be connected to the water inlet of the spray assembly, and the spray of the spray assembly can achieve indirect communication with the washing chamber, or the third interface 412 of the connecting structure 40 can be directly connected to the washing chamber. The opening shape and size of the first interface 411, the second interface 421, and the third interface 412 can be the same. In this way, the interfaces between the connecting structure 40 and the output connector 52, the water supply end, and the washing chamber can be arbitrarily changed, thereby improving the convenience and efficiency of installation.

[0050] Based on the dispensing system 100 and dishwasher 1000 of the embodiment of the present application, a connecting structure 40 having a first interface 411, a second interface 421, and a third interface 412 is provided, and the input connector 51 of the pump body 50 is directly connected to the liquid outlet connector 31 of the liquid storage structure 30. Thus, the user can first store detergent in the liquid storage structure 30, and then the pump body 50 draws the detergent in the liquid storage structure 30 through the first interface 411 and injects it into the connecting structure 40. Simultaneously, water from the water supply end is injected into the connecting structure 40 through the second interface 421, driving the detergent in the connecting structure 40 along the third interface 412 and into the washing chamber, thereby completing the detergent dispensing process.

[0051] In this way, when the detergent in the liquid storage structure 30 is released into the connecting structure 40 through the pump body 50, combined with the introduction of water flow from the second interface 421 to flush the detergent retained inside the connecting structure 40, it can effectively reduce the condensation of detergent inside the connecting structure 40, so as to reduce the possibility of detergent remaining in the connecting structure 40 to cause blockage. Moreover, since there is no additional pipeline connection between the pump body 50 and the liquid storage structure 30, and they are directly connected, the loss of detergent in the pipeline can be effectively avoided, and the probability of blockage is further reduced. In this way, the accuracy of the detergent release amount of the dishwasher 1000 is improved, and the dishwashing cleaning effect of the dishwasher 1000 can be effectively guaranteed to be stable and reliable.

[0052] Referring to Figures 2 and 3, the communication structure 40 optionally includes a first connecting pipe 41 and a second connecting pipe 42. One end of the second connecting pipe 42 passes through the wall of the first connecting pipe 41 and communicates with the interior of the first connecting pipe 41. Opposite ends of the first connecting pipe 41 are respectively configured as a first port 411 and a third port 412. The end of the second connecting pipe 42 facing away from the first connecting pipe 41 is configured as a second port 421. The first and second connecting pipes 41 and 42 may be integrally formed, thereby reducing the number of components in the communication structure 40, simplifying the overall structure of the communication structure 40, and increasing its overall strength. By arranging for detergent flowing out of the second connecting pipe 42 to flow into the first connecting pipe 41 and along the direction of the water flow in the first connecting pipe 41, there is no need for a separate space for the detergent and water to mix. This simplifies the structure of the communication structure 40, facilitates manufacturing, and facilitates installation, reducing the space occupied by the installation cavity, and further miniaturizing the dishwasher 1000.

[0053] Furthermore, the distance between the connection point between the second connecting pipe 42 and the first connecting pipe 41 and the first interface 411 is smaller than the distance between the connection point between the second connecting pipe 42 and the first connecting pipe 41 and the third interface 412. This arrangement allows clean water from the water supply end to enter the connecting structure 40 near the first interface 411, so that when the detergent is retained near the first interface 411 (i.e., near the liquid storage structure 30), it can also be washed away by the clean water from the water supply end, thereby increasing the length of the clean water from the water supply end that passes through the first connecting pipe 41, thereby further improving the effect of flushing the detergent retained inside the connecting structure 40.

[0054] Optionally, the first connecting pipe 41 and / or the second connecting pipe 42 are arranged in an arc-shaped pipe. Referring to Figure 3, the first connecting pipe 41 and the second connecting pipe 42 can be arranged in an arc shape such as a "C" shape, which can not only adapt to special installation environments, but also the arc-shaped first connecting pipe 41 can extend the passage length of clean water and detergent, thereby increasing the mixing time of clean water and detergent and improving the cleaning effect. Referring to Figure 4, in another embodiment, when the height of the second connecting pipe 42 is higher than the height of the connection point between the second connecting pipe 42 and the first connecting pipe 41, the second connecting pipe 42 is more likely to guide clean water into the first connecting pipe 41, thereby reducing detergent residue and improving the cleaning effect.

[0055] 5 , in another embodiment, 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 of water flow away from the first connecting pipe 41. Specifically, the first connecting pipe 41 and the second connecting pipe 42 are arranged at an angle, specifically in a V-shape or a V-shape, and the second connecting pipe 42 extends in a direction of water flow away from the first connecting pipe 41. In this way, the detergent flowing out of the second connecting pipe 42 can flow along the direction of water flow in the first connecting pipe 41, making it easier for the detergent to be flushed toward the third port 412 and enter the washing chamber, further reducing detergent retention in the communication structure 40 and improving the cleaning effect.

[0056] In some configurations, the first connecting tube 41 and the second connecting tube 42 are telescopic tubes. This allows for adjustable lengths, allowing for adaptability to various installation environments. Alternatively, the first connecting tube 41 and the second connecting tube 42 are flexible tubes. This allows for easy bending and deformation, allowing for adaptability to various installation environments.

[0057] Referring to Figure 6 , in another embodiment, the first connecting tube 41 includes a first subsegment 41a, a second subsegment 41b, and a third subsegment 41c, which are sequentially connected. The inner diameter of the second subsegment 41b is smaller than that of the first subsegment 41a and the third subsegment 41c. The second subsegment 41b is connected to the second connecting tube 42, and the inner diameter of the second connecting tube 42 is smaller than that of the second subsegment 41b. This arrangement allows the first connecting tube 41 and the second connecting tube 42 to form a Venturi tube structure. It should be noted that when a confined fluid passes through a reduced flow area, its flow velocity increases, and the flow velocity is inversely proportional to the flow area. Bernoulli's principle states that this increase in flow velocity is accompanied by a decrease in fluid pressure, a phenomenon known as the Venturi phenomenon. This effect refers to the generation of low pressure near a high-speed flowing fluid, which results in adsorption. That is, when the water flow in the first connecting pipe 41 passes through the interface with the second connecting pipe 42, the detergent retained in the second connecting pipe 42 is brought out to the first connecting pipe 41 due to the smaller inner diameter and lower pressure of the second sub-section 41b connected to the second connecting pipe 42.

[0058] The above are various structural embodiments of the communication structure 40 to improve the cleaning effect. The cleaning effect can also be improved by providing other components on the second interface 421 and the third interface 412 of the communication structure 40.

[0059] Referring to Figures 7 to 9, the second port 421 is optionally connected to at least one of a water inlet valve 60, a breather 70, and a water softener 80. The water inlet valve 60 is disposed on the second port 421 and controls the amount of water entering the communication structure 40 through the second port 421, thereby controlling the amount of water entering during each wash cycle. The breather 70 connects the communication structure 40 to the outside atmosphere to remove air bubbles from the water flow, preventing excessive gas pressure during the wash cycle and protecting the internal pipes and components of the dishwasher 1000 from damage. The water softener 80 softens the water entering the communication structure 40 through the second port 421 to produce soft water. Soft water refers to water containing less than 50 mg / L of calcium and magnesium salts. When used for washing, this water provides better washing results and saves detergent, thereby improving the washing process. This design can be used in dishwashers 1000 with a larger installation space at the second port 421. It should be noted that the water inlet valve 60, the respirator 70 and the water softener 80 can be directly connected or connected through pipelines, and this application does not limit this.

[0060] In one embodiment, referring to Figure 7 , the second port 421 is connected to a water inlet valve 60 and a breather 70. The breather 70 is connected downstream of the water inlet valve 60, and the second port 421 is connected to the end of the breather 70 facing away from the water inlet valve 60. In this manner, after the liquid storage structure 30 injects detergent into the connecting structure 40 via the pump body 50, the water inlet valve 60 opens to allow water to flow in from the water supply. The water flows through the flow meter on the breather 70 and then enters the connecting structure 40, flushing the detergent in the connecting structure 40 into the washing chamber of the dishwasher 1000 for washing. This allows for precise control of the water flow rate at the water supply, thereby achieving control over the detergent concentration.

[0061] In another embodiment, referring to FIG8 , the second port 421 is connected to a water inlet valve 60, a breather 70, and a water softener 80. The breather 70 is connected downstream of the water inlet valve 60, and the water softener 80 is connected downstream of the breather 70. The second port 421 is connected to the end of the water softener 80 facing away from the breather 70. In this manner, after the liquid storage structure 30 injects detergent into the connecting structure 40 via the pump body 50, the water inlet valve 60 opens to allow water to enter from the water supply. The water flows through the flowmeter on the breather 70 and then enters the resin chamber of the water softener 80. After the water is softened in the resin chamber, it enters the connecting structure 40, flushing the detergent in the connecting structure 40 into the washing chamber of the dishwasher 1000 for washing. This not only allows for precise control of the water inflow from the water supply, but also ensures that the fresh water entering the connecting structure 40 is softened, resulting in better washing performance and saving detergent, thereby improving the washing effect.

[0062] In another embodiment, referring to Figure 9 , the second port 421 is connected to the water inlet valve 60, and the third port 412 is connected to the breather 70 and / or water softener 80. By placing the breather 70 and water softener 80 at the third port 412, the dishwasher 1000 can be configured with a larger installation space at the third port 412. Similarly, the breather 70 connects the third port 412 to the outside atmosphere to remove air bubbles from the water flow, preventing excessive gas pressure during washing operations and 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, thereby improving the washing effect.

[0063] In other embodiments, the water inlet valve 60 and the breather 70 may be connected to the second interface 421 , while the third interface 412 may be connected to a water softener 80 .

[0064] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only configured as illustrative illustrations and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0065] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A delivery system, which should be configured as a dishwasher, wherein: The delivery system comprises: A pump body, the pump body having an input connector and an output connector; a communication structure, the communication structure comprising a first interface, a second interface and a third interface that are connected to each other, the first interface is connected to the output connector, the second interface is configured to communicate with a water supply end, and the third interface is configured to communicate with a washing chamber of the dishwasher; and A liquid storage structure, wherein the liquid storage structure is configured to contain detergent, and a liquid outlet connector of the liquid storage structure is directly connected to the input connector; The pump body draws detergent from the liquid storage structure through the first interface and injects it into the connecting structure, and the water flow from the water supply end is injected into the connecting structure through the second interface, so as to drive the detergent in the connecting structure to be injected into the washing chamber along the third interface.

2. The delivery system according to claim 1, wherein: The connecting structure includes a first connecting tube and a second connecting tube, one end of the second connecting tube passes through the tube wall of the first connecting tube and is connected to the interior of the first connecting tube, the opposite ends of the first connecting tube are respectively configured as the first interface and the third interface, and the end of the second connecting tube away from the first connecting tube is configured as the second interface.

3. The delivery system according to claim 2, wherein: The distance between the connecting point of the second connecting pipe and the first connecting pipe and the first interface is smaller than the distance between the connecting point of the second connecting pipe and the first connecting pipe and the third interface.

4. The delivery system according to claim 3, wherein: The first connecting pipe and the second connecting pipe are arranged at an angle, and the second connecting pipe extends along a water flow direction away from the first connecting pipe.

5. The delivery system according to any one of claims 2 to 4, wherein: The first connecting tube and / or the second connecting tube are / is arranged in an arc-shaped tube.

6. The delivery system according to any one of claims 2 to 4, wherein: The first connecting pipe includes a first sub-segment, a second sub-segment and a third sub-segment connected in sequence, the inner diameter of the second sub-segment is smaller than the inner diameter of the first sub-segment and the inner diameter of the third sub-segment, the second sub-segment is connected to the second connecting pipe, and the inner diameter of the second connecting pipe is smaller than the inner diameter of the second sub-segment.

7. The delivery system according to any one of claims 1 to 6, wherein: The second interface is connected to at least one of a water inlet valve, a breather and a water softener.

8. The delivery system according to claim 7, wherein: The second interface is connected to the water inlet valve and the respirator, the respirator is connected downstream of the water inlet valve, and the second interface is connected to an end of the respirator away from the water inlet valve; Or, the second interface is connected to the water inlet valve, the breather and the water softener, the breather is connected downstream of the water inlet valve, the water softener is connected downstream of the breather, and the second interface is connected to one end of the water softener away from the breather.

9. The delivery system according to any one of claims 1 to 6, wherein: The second interface is connected to a water inlet valve, and the third interface is connected to a respirator and / or a water softener.

10. A dishwasher, wherein: Comprising a delivery system as described in any one of claims 1 to 9.

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