Water supply line for a dishwasher and dishwasher

Abstract

The application relates to a water supply pipeline for a dishwasher and the dishwasher. The water supply pipeline for the dishwasher comprises a water supply pipe and a moving pipeline assembly, the moving pipeline assembly comprising a tensioning piece, a connected hose and a spray head, one end of the hose away from the spray head being communicated with the water supply pipe, the spray head being arranged on the dishwasher in a reciprocating movable mode, the tensioning piece being arranged in a spaced mode with the spray head and being drivingly connected with the hose, and the tensioning piece being configured to drive the hose and the spray head to move synchronously, so that the hose between the tensioning piece and the spray head is kept in tension. The above scheme not only solves the problem that the water flow beam of the spray hole of the spray arm cannot reach the distributor due to the interference of other structures to the water flow path in the prior art by using the reciprocating movable spray head, but also realizes that when the spray head moves synchronously with the moving seat, the hose switches its mode according to the position of the spray head, and then the water supply pipeline of the dishwasher is kept unblocked to realize normal water supply.

Description

Technical Field

[0001] This application relates to the field of cleaning equipment technology, and in particular to water supply lines for dishwashers and dishwashers. Background Technology

[0002] A household dishwasher is an intelligent appliance suitable for ordinary families that can replace manual dishwashing. Typically, a dishwasher's water pump circulates water to each spray arm, and the spray nozzles on the arms spray high-temperature, high-pressure water jets to thoroughly rinse and clean the dishes. Combined with wetting, decomposition, and soaking / expanding effects, it achieves both cleaning and sterilization. The dishwasher also features a detergent dispenser inside, which holds the detergent and distributes it in a specific way and at a specific time during the washing process for better cleaning results.

[0003] To adapt the volume of the washing chamber to the volume of dishes to be washed, thus providing a better user experience, multi-chamber dishwashers have emerged. These dishwashers include an inner tub and several dish racks spaced vertically within it. A partition separates adjacent dish racks, allowing the partition to be deployed. When deployed, the partition separates the spaces of adjacent dish racks into two independent, non-communicating chambers. This allows dishes in any single chamber to be processed, enabling the washing chamber volume to be adjusted according to the volume of dishes to be washed, thereby reducing the dishwasher's energy consumption.

[0004] However, multi-chamber dishwashers have multiple dish racks, and due to the interference of the dish rack handle structure, the spray arm nozzles cannot reach the vicinity of the dispenser, thus failing to utilize the cleaning agent inside the dispenser to achieve better cleaning results. Summary of the Invention

[0005] Therefore, it is necessary to provide a water supply line and dishwasher for a dishwasher to address the problem that the spray arm nozzles cannot reach the vicinity of the distributor, thus affecting the cleaning effect.

[0006] In a first aspect, this application provides a water supply line for a dishwasher, the water supply line for the dishwasher including a water supply pipe and a movable line assembly, the movable line assembly including a tensioning member, a connected hose and a nozzle, the end of the hose away from the nozzle being connected to the water supply pipe, and the nozzle being reciprocally movable on the dishwasher, the tensioning member being spaced apart from the nozzle and being drively connected to the hose, the tensioning member being configured to drive the hose and the nozzle to move synchronously, so that the hose between the tensioning member and the nozzle is kept taut.

[0007] In one embodiment, the tensioning member and the hose are engaged in a transmission, the tensioning member is rotatably disposed, and the outer periphery of the tensioning member and the circumferential surface of the hose are respectively provided with matching transmission teeth.

[0008] In one embodiment, the movable pipeline assembly further includes a collection plate disposed along the path of the hose, the collection plate being disposed between the water supply pipe and the tensioner, and when the tensioner moves the hose toward the water supply pipe, the hose between the tensioner and the water supply pipe is at least partially placed on the collection plate.

[0009] In one embodiment, the movable conduit assembly further includes a guide disposed along the path of the hose, the guide being located between the water supply pipe and the tensioner, the guide being connected to the hose and configured to move the hose to increase the path length of the hose between the water supply pipe and the tensioner.

[0010] In one embodiment, the moving conduit assembly further includes an elastic element connected to the guide element, the elastic element being configured to tend to move the guide element in a direction that increases the length of the hose path between the water supply pipe and the tensioner.

[0011] Secondly, this application also provides a dishwasher, which includes a water supply pipe for a dishwasher as described in any of the above embodiments, and further includes a drive assembly, which includes a rotating screw and a movable seat, the movable seat being threadedly connected to the rotating screw, the rotating screw being configured to rotate and drive the movable seat to move along the axial direction of the rotating screw, and the nozzle being connected to the movable seat.

[0012] In one embodiment, the drive assembly further includes a drive wheel fixedly connected to the rotating screw, and the tensioning member includes a transmission end and a moving end coaxially arranged, the transmission end engaging with the drive wheel, and the moving end being connected to the hose in a transmission manner.

[0013] In one embodiment, both the transmission end and the drive wheel are helical gear structures.

[0014] In one embodiment, the pitch of the rotating screw is H, the rotational speed is N1, the pitch circle radius of the tensioning member is R, the rotational speed is N2, and N1H = 2πRN2.

[0015] In one embodiment, the dishwasher further includes a dispenser, the nozzle moving toward or away from the dispenser as it reciprocates, and the nozzle spraying out in the direction of the dispenser.

[0016] The dishwasher water supply system provided in the above solution not only solves the problem in the prior art where the water jet from the spray arm nozzles cannot reach the distributor due to interference with the water flow path caused by other structures, by using a reciprocating nozzle, but also maintains tension on the hose between the tensioner and the nozzle by setting a tensioning member to drive the hose to move synchronously. Furthermore, a movable guide member allows the hose to move when the tensioner moves it back, thus preventing the hose from stacking between the tensioner and the guide member and affecting the water flow within the hose. This ensures that the hose changes its shape according to the position of the nozzle as the nozzle moves synchronously with the moving base, thereby ensuring that the dishwasher's water supply system is unobstructed and supplies water normally. Attached Figure Description

[0017] Figure 1 This is a partial structural diagram of a dishwasher according to one embodiment of this application.

[0018] Figure 2 for Figure 1 A schematic diagram of the moving pipeline assembly and partition in the diagram.

[0019] Figure 3 for Figure 1 A schematic diagram of the structure of the central water supply pipe and mobile pipeline assembly.

[0020] Figure 4 for Figure 1 A top view of the moving pipeline components and drive components in the middle.

[0021] Figure 5 for Figure 4 Cross-sectional view of the moving pipeline assembly and drive assembly.

[0022] Figure 6 for Figure 2 A schematic diagram of the collection plate in the image.

[0023] Figure 7 for Figure 4 A schematic diagram of the tensioning element and the drive wheel.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100. Dishwasher; 110. Water supply pipe; 120. Moving pipe assembly; 121. Tensioner; 1211. Drive end; 1212. Moving end; 122. Hose; 123. Nozzle; 124. Collection plate; 1241. Slide rail; 125. Guide; 126. Elastic element; 130. Drive assembly; 131. Rotating screw; 132. Moving seat; 133. Drive wheel; 140. Partition; 150. Door; 160. Distributor; 170. Dish rack. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0027] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0028] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0032] See Figure 1 , Figure 1 The accompanying drawings show a partial structural schematic diagram of a dishwasher 100 according to one embodiment of this application. It is understood that the drawings provided in this application only include a portion of the structure of the dishwasher 100. Other structures not shown in the drawings can refer to the structure of any dishwasher 100 and are not limited thereto.

[0033] like Figure 1 As shown, this application also provides a dishwasher 100, which includes a body and a door 150 that fit together. The dishwasher 100 has a cleaning chamber inside, which contains a dish rack 170 for placing dishes and utensils, and a water supply pipe (described below) for the dishwasher 100. The water supply pipe provides water to the dishwasher 100 to wash the dishes in the dish rack 170. The dishwasher 100 also includes a dispenser 160 for holding detergent, which is installed inside the door 150. The detergent can be a cleaning liquid or a cleaning powder, and is not limited thereto.

[0034] like Figure 2 As shown, in this embodiment, the dishwasher 100 further includes a drive assembly 130 and a partition 140. The drive assembly 130 includes a rotating screw 131 and a movable seat 132. The movable seat 132 is threadedly connected to the rotating screw 131. The rotating screw 131 is configured to rotate and drive the movable seat 132 to move along the axial direction of the rotating screw 131. The partition 140 is connected to the movable seat 132 to move synchronously with the movable seat 132, thereby dividing the cleaning chamber of the dishwasher 100 into upper and lower sections.

[0035] This application also provides a water supply line for a dishwasher 100. For example... Figures 3 to 5 As shown, the water supply line for the dishwasher 100 includes a water supply pipe 110 and a moving pipe assembly 120, such as... Figure 3 As shown, the water supply pipe 110 is used to connect to the water pipe outside the dishwasher 100 to provide a channel for water to flow into the dishwasher 100.

[0036] like Figures 2 to 5 As shown, the mobile piping assembly 120 includes a tensioner 121, a connected hose 122, and a nozzle 123, as... Figure 3 As shown, the end of the hose 122 away from the nozzle 123 is connected to the water supply pipe 110, and the nozzle 123 is configured to reciprocate. In this embodiment, the nozzle 123 is connected to the movable seat 132 so that when the movable seat 132 moves along the axial direction of the rotating screw 131, the nozzle 123 moves synchronously with the movable seat 132. When the nozzle 123 reciprocates, it moves closer to or away from the distributor 160, and the spraying direction of the nozzle 123 is towards the distributor 160, so that the water in the water supply pipe 110 and the hose 122 is sprayed out from the nozzle 123 to form a high-pressure water jet, which is then sprayed into the distributor 160 to carry out the detergent in the distributor 160 and apply the detergent to the dishwashing in the dishwasher 100, thereby improving the cleaning effect of the dishwasher 100.

[0037] like Figure 4 and Figure 5 As shown, the tensioning member 121 is spaced apart from the nozzle 123 and is connected to the hose 122 via a transmission connection. The tensioning member 121 is configured to drive the hose 122 and the nozzle 123 to move synchronously, so that the hose 122 between the tensioning member 121 and the nozzle 123 remains taut, thereby preventing the hose 122 between the tensioning member 121 and the nozzle 123 from slackening and sagging. Figure 1 and Figure 2 As shown, the hose 122 between the tensioner 121 and the nozzle 123 is located above the dish rack 170. When the hose 122 between the tensioner 121 and the nozzle 123 slackens and droops, it will enter the space above the dish rack 170, thereby interfering with the dishwasher 100's washing action on the dishes and utensils in the dish rack 170.

[0038] like Figure 5 As shown, in one embodiment, the tensioning member 121 and the hose 122 are engaged in transmission. The tensioning member 121 is rotatably arranged, and the outer periphery of the tensioning member 121 and the periphery of the hose 122 are respectively provided with matching transmission teeth, so that the clockwise rotation and counterclockwise rotation of the tensioning member 121 can drive the hose 122 to move back and forth.

[0039] like Figure 3 , Figure 5 and Figure 6As shown, in one embodiment, the moving tubing assembly 120 further includes a collecting plate 124 disposed along the path of the hose 122. The collecting plate 124 is positioned between the water supply pipe 110 and the tensioner 121. When the tensioner 121 moves the hose 122 toward the water supply pipe 110, at least part of the hose 122 between the tensioner 121 and the water supply pipe 110 is placed on the collecting plate 124, thus preventing the hose 122 from drooping and interfering with other operations of the dishwasher 100 when it retracts. In this embodiment, the hose 122 has an L-shaped structure, with one side horizontally positioned for placing the hose 122, and the other side vertically positioned to isolate the hose 122 from the dish rack 170 in the washing chamber, preventing the hose 122 from interfering with the washing operation of the dishwasher 100.

[0040] like Figure 6 As shown, in one embodiment, the moving pipeline assembly 120 further includes a guide 125 disposed along the path of the hose 122, the guide 125 being located between the water supply pipe 110 and the tensioner 121, as shown. Figure 6 In the illustrated embodiment, the collecting plate 124 has a groove 1241, and the guide member 125 is located within the groove 1241 and slidably connected to the collecting plate 124. Preferably, the opening direction of the groove 1241 (i.e., the moving direction of the guide member 125) is perpendicular to the path of the hose 122. Figure 6 As shown, the guide 125 is connected to the hose 122 and configured to move the hose 122 to increase the path length of the hose 122 between the water supply pipe 110 and the tensioner 121, thereby preventing the hose 122 from stacking and affecting the water flow in the hose 122 when it is not in a tensioned state between the tensioner 121 and the guide 125.

[0041] like Figure 6 As shown, in one embodiment, the moving pipeline assembly 120 further includes an elastic element 126 connected to the guide 125, and the elastic element 126 is configured to have a tendency to move the guide 125 in a direction that increases the path length of the hose 122 between the water supply pipe 110 and the tensioner 121.

[0042] Combination Figure 6 As shown, when the tensioner 121 drives the hose 122 to retract, the hose 122 between the tensioner 121 and the guide 125 will relax and fall back onto the collection plate 124. At this time, the hose 122 between the tensioner 121 and the guide 125 is no longer in a tensioned state. The elastic member 126 drives the guide 125 to push the hose 122 to move, thereby increasing the path length of the hose 122 between the water supply pipe 110 and the tensioner 121, so as to avoid the hose 122 between the tensioner 121 and the guide 125 from stacking and affecting the water flow in the hose 122.

[0043] like Figure 6As shown, when the nozzle and tensioner 121 drive the hose 122 forward, the hose 122 located on the collection plate 124 is driven forward by the tensioner 121. At this time, the length of the hose 122 between the water supply pipe 110 and the tensioner 121 is shortened, which will overcome the elastic force of the elastic member 126 and drive the guide member 125 to reset, that is, move in the direction of reducing the path length of the hose 122 between the water supply pipe 110 and the tensioner 121.

[0044] like Figure 7 As shown, in one embodiment, the drive assembly 130 further includes a drive wheel 133, which is fixedly connected to the rotating screw 131 so that the drive wheel 133 rotates at the same speed as the rotating screw 131. The tensioning member 121 includes a transmission end 1211 and a moving end 1212 coaxially arranged. The transmission end 1211 is engaged with the drive wheel 133 so that when the rotating screw 131 rotates, the drive wheel 133 rotates at the same speed as the rotating screw 131, driving the transmission end 1211 of the tensioning member 121 to rotate. Since the moving end 1212 and the transmission end 1211 are coaxially arranged and connected, the moving end 1212 rotates coaxially and at the same angle as the transmission end 1211. The moving end 1212 is also connected to the hose 122, thereby driving the hose 122 to reciprocate through the moving end 1212.

[0045] like Figure 7 As shown, in one embodiment, both the transmission end 1211 and the drive wheel 133 are helical gear structures, which can both transmit smoothly and convert the rotational motion of the drive wheel 133 into the rotational motion of the tensioner 121 in a direction perpendicular to it.

[0046] In one embodiment, the pitch of the rotating screw 131 is H, and the rotational speed of the rotating screw 131 is N1. Therefore, the rotational speed of the drive wheel 133 is also N1. The pitch circle radius of the tensioning member 121 is R, and its rotational speed is N2. It can be understood that, assuming the transmission ratio between the tensioning member 121 and the drive wheel 133 is M, then N2 = N1M. Furthermore, N1H = 2πRN2, meaning that the distance the rotating screw 131 moves the moving seat 132 is N1H, and the distance the tensioning member 121 moves the hose 122 is 2πRN2. These two values ​​are equal, thus satisfying the requirement that the speed at which the nozzle 123 moves the hose 122 is the same as the speed at which the tensioning member 121 moves the hose 122. This ensures that the hose 122 between the tensioning member 121 and the nozzle 123 remains taut, preventing the hose 122 from sagging and affecting other operations of the dishwasher 100.

[0047] The water supply pipe for the dishwasher 100 provided in the above solution is provided with a hose 122 connected to the water supply pipe 110, and a nozzle 123 facing the distributor is provided on the hose 122. Water from the water supply pipe 110 and the hose 122 is sprayed out from the nozzle 123 to form a high-pressure water jet, which is then sprayed into the distributor 160 to carry out the detergent in the distributor 160 and apply the detergent to the dishwashing inside the dishwasher 100, thereby improving the cleaning effect of the dishwasher 100. At the same time, since the nozzle 123 moves back and forth, a tensioning member 121 is also provided and is driven to the hose 122. The tensioning member 121 drives the hose 122 and the nozzle 123 to move synchronously, so that the hose 122 between the tensioning member 121 and the nozzle 123 can be kept taut. This prevents the hose 122 between the tensioning member 121 and the nozzle 123 from slackening and hanging into the space above the dish rack 170, thereby interfering with the dishwasher 100's cleaning action on the dish rack 170.

[0048] Specifically, the water supply line for the dishwasher 100 engages with the tensioner 121 and the drive assembly 130 that moves the nozzle 123, so that the distance that the rotating screw 131 in the drive assembly 130 moves the moving seat 132 (i.e., the nozzle 123) is equal to the distance that the tensioner 121 moves the hose 122. This ensures that the speed at which the nozzle 123 moves the hose 122 is the same as the speed at which the tensioner 121 moves the hose 122, thereby keeping the hose 122 between the tensioner 121 and the nozzle 123 taut and preventing the hose 122 from sagging and affecting other operations of the dishwasher 100.

[0049] Furthermore, the water supply line for the dishwasher 100 also includes a collection plate 124 located between the water supply pipe 110 and the tensioner 121 along the path of the hose 122. This ensures that when the tensioner 121 retracts the hose 122, the retracted hose 122 is placed on the collection plate 124, preventing the hose 122 from drooping and interfering with other operations of the dishwasher 100. Simultaneously, a movable guide 125 is provided on the collection plate 124, ensuring that when the tensioner 121 retracts the hose 122, the guide 125... The hose 122 between the tensioner 121 and the guide 125 will relax and fall back onto the collection plate 124. At this time, the hose 122 between the tensioner 121 and the guide 125 is no longer in a tensioned state. The elastic member 126 drives the guide 125 to push the hose 122 to move, thereby increasing the path length of the hose 122 between the water supply pipe 110 and the tensioner 121, so as to avoid the hose 122 between the tensioner 121 and the guide 125 from stacking and affecting the water flow in the hose 122.

[0050] The water supply pipeline of the dishwasher 100 provided in the above solution not only solves the problem in the prior art where the water jet from the spray arm nozzles cannot reach the distributor 160 due to interference with the water flow path by other structures, but also uses a tensioning member 121 to drive the hose 122 to move synchronously with the nozzle 123, so that the hose 122 between the tensioning member 121 and the nozzle 123 can be kept taut. Furthermore, through the movable guide member 125, when the tensioning member 121 drives the hose 122 to retract, the guide member 125 pushes the hose 122 to move, thereby avoiding the stacking of the hose 122 between the tensioning member 121 and the guide member 125, which affects the water flow in the hose 122. This allows the hose 122 to switch its shape according to the position of the nozzle 123 when the nozzle 123 moves synchronously with the moving seat 132, thus ensuring that the water supply pipeline of the dishwasher 100 is unobstructed and supplies water normally.

[0051] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A dishwasher, characterized in that, The dishwasher includes a water supply line and a drive assembly for the dishwasher; The water supply line for the dishwasher includes a water supply pipe and a moving pipe assembly. The moving pipe assembly includes a tensioning member, a connected hose, and a nozzle. The end of the hose away from the nozzle is connected to the water supply pipe, and the nozzle is reciprocally mounted on the dishwasher. The tensioning member is spaced apart from the nozzle and is throttle-connected to the hose. The tensioning member is configured to drive the hose and the nozzle to move synchronously, so that the hose between the tensioning member and the nozzle remains taut. The drive assembly includes a rotating screw and a movable seat, the movable seat being threadedly connected to the rotating screw, the rotating screw being configured to rotate and drive the movable seat to move along the axial direction of the rotating screw, and the nozzle being connected to the movable seat; The drive assembly further includes a drive wheel, which is fixedly connected to the rotating screw. The tensioning member includes a transmission end and a moving end arranged coaxially. The transmission end is engaged with the drive wheel, and the moving end is connected to the hose.

2. The dishwasher according to claim 1, characterized in that, The tensioning member and the hose engage in a transmission. The tensioning member is rotatably mounted, and the outer periphery of the tensioning member and the periphery of the hose are respectively provided with matching transmission teeth.

3. The dishwasher according to claim 1, characterized in that, The mobile pipeline assembly also includes a collection plate disposed along the path of the hose. The collection plate is disposed between the water supply pipe and the tensioner, and when the tensioner moves the hose toward the water supply pipe, at least part of the hose between the tensioner and the water supply pipe is placed on the collection plate.

4. The dishwasher according to claim 1, characterized in that, The movable pipeline assembly further includes a guide member disposed along the path of the hose, the guide member being located between the water supply pipe and the tensioner, the guide member being connected to the hose and configured to move the hose to increase the path length of the hose between the water supply pipe and the tensioner.

5. The dishwasher according to claim 4, characterized in that, The moving pipeline assembly also includes an elastic element connected to the guide element, the elastic element being configured to tend to move the guide element in a direction that increases the hose path length between the water supply pipe and the tensioner.

6. The dishwasher according to claim 1, characterized in that, Both the transmission end and the driving wheel are helical gear structures.

7. The dishwasher according to claim 1, characterized in that, The screw pitch is H and the rotation speed is N1. The tensioning element has a pitch circle radius of R and a rotation speed of N2, and N1H = 2πRN2.

8. The dishwasher according to claim 7, characterized in that, The dishwasher also includes a dispenser, and the nozzle moves closer to or further away from the dispenser as it reciprocates, with the nozzle spraying in the direction of the dispenser.

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