An additive dispensing device and a washing machine

Abstract

The application discloses an additive feeding device, which comprises a water box and a feeding box. An axial positioning block is arranged in the water box. The opening of the feeding box is outwardly bent to form a flange. The flange is arranged on the upper side of the positioning block. At least one water guide notch is formed on the flange and penetrates the bottom end of the flange. In the application, the water flow on the flange is guided to the upper side of the positioning block through the water guide notch, and then flows into the water box. Thus, the problem of water leakage from the front end and both sides of the feeding box during the sliding process of the feeding box along the upper side of the positioning block of the water box is avoided, and the user experience is improved. The application further discloses a washing machine provided with the additive feeding device.

Description

Technical Field

[0001] This invention belongs to the field of washing machine technology, and more specifically, relates to an additive dispensing device and a washing machine. Background Technology

[0002] During the washing and care process, users can add one or more of the existing additives for treating clothes, such as detergent, fabric softener, fragrance, bleach, and disinfectant, into the water tank and / or washing drum of the washing machine to achieve the effects of washing, fragrance, and disinfection of clothes.

[0003] Most washing machines are equipped with an additive dispensing device to dispense additives into the water tank and / or washing drum. The additive dispensing device includes a water tank and a dispensing box that slides along the upper side of a positioning block within the water tank. The dispensing box has at least one dispensing cavity, allowing the user to add the additive. The washing machine's incoming water flow then flushes the additive into the water tank and / or washing drum, thus dispensing the additive and ensuring effective washing and care for clothes.

[0004] In existing washing machines, if the water flow is too large during the process of filling the dispenser, water will splash onto the flange on the outer perimeter of the dispenser opening and the inner wall of the dispenser. As the dispenser slides along the upper side of the positioning block inside the dispenser, water will leak from the front and sides of the dispenser onto the floor, causing a water leakage problem and affecting the user experience.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art. The purpose of the present invention is to provide an additive dispensing device to guide the water that splashes onto the flange formed by the outward bending of the opening of the dispensing box into the water box.

[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0008] An additive dispensing device includes a water box and a dispensing box. The water box has an axially extending positioning block inside. The opening of the dispensing box is bent outward to form a flange. The flange is located on the upper side of the positioning block, and at least one water guiding notch is provided on the flange, penetrating the bottom end of the flange.

[0009] In the above solution, by creating a water-guiding notch that runs through the bottom of the flange, water splashed onto the flange is directed to the upper side of the positioning block and then flows into the water box. This prevents water leakage from the front and sides of the dispensing box as it slides along the upper side of the positioning block of the water box, and avoids water containing additive residue remaining on the flange of the dispensing box, which could affect the washing and care of clothes or even corrode the dispensing box.

[0010] Furthermore, the flange is formed with a longitudinal first wall, the bottom end of which is located on the upper side of the positioning block, and a water-guiding notch is provided on the first wall that penetrates the bottom end of the first wall.

[0011] In the above solution, during the process of the washing machine's water inlet device filling the dispenser box, due to excessive water pressure, some water will splash onto the first wall. By setting a water guide notch, the water splashed onto the first wall can quickly flow to the upper side of the positioning block and then into the water box.

[0012] Furthermore, the first wall has an inner wall surface and an outer wall surface facing away from each other. The outer wall surface is disposed opposite to the side wall of the delivery box, and the outer wall surface extends downward toward the upper side of the positioning block to form an inclined surface.

[0013] In the above scheme, since the outer wall surface is an inclined surface that extends towards the upper side of the positioning block, the water splashed onto the outer wall surface of the first wall flows towards the upper side of the positioning block under the action of gravity, thus preventing the water remaining on the outer wall surface of the first wall from flowing out from the front end and sides of the dispensing box during the sliding process.

[0014] Furthermore, the flange also forms a second transverse wall, one end of which is connected to the opening of the delivery box, and the other end is bent and connected to the upper end of the first wall.

[0015] In the above scheme, during the process of the washing machine's water inlet device filling the dispenser box, due to excessive water pressure, some water will splash onto the first and second walls. The water splashed onto the second wall will flow towards the first wall under the action of gravity. The speed at which the water on the first wall flows towards the upper side of the positioning block is controlled to prevent a large amount of water from accumulating on the upper side of the positioning block, causing the water box to overflow or leak.

[0016] Furthermore, the first wall is provided with a plurality of reinforcing ribs that protrude from the inner wall surface and extend along the axial direction of the delivery box, and the top of the reinforcing ribs is integrally connected to the lower side of the second wall.

[0017] In the above scheme, the reinforcing ribs set on the first wall not only improve the support strength of the flange, but also extend the service life of the delivery box. In addition, the reinforcing ribs have a simple structure, are easy to process, and have significant effects, making them suitable for industrial applications.

[0018] Furthermore, the positioning block is provided with at least one overflow notch that penetrates the upper side of the positioning block, and the opening of the water guide notch is positioned opposite to the overflow notch, so that the water on the flange flows downward into the water box through the overflow notch.

[0019] In the above solution, the opening of the water guide notch is positioned opposite to the overflow notch so that water splashed onto the flange flows through the water guide notch to the upper side of the positioning block and the overflow notch. The water on the upper side of the positioning block further flows into the overflow notch, and the water that accumulates in the overflow notch flows into the water box and finally into the water tank and / or washing drum of the washing machine, thereby acting on the washing and care process of clothes.

[0020] Furthermore, the width of the opening of the water guide notch is greater than or equal to the width of the opening at the upper end of the overflow notch.

[0021] In the above scheme, the width of the opening of the water guide notch is greater than or equal to the width of the opening at the top of the overflow notch, so that the water splashed onto the flange flows through the water guide notch to the upper side of the positioning block and the overflow notch respectively, avoiding excessive water accumulation on the upper side of the positioning block or the overflow notch, which would cause the water box to overflow or leak.

[0022] Furthermore, the cross-section of the water-guiding notch along the flange extension direction is a trapezoid that is narrower at the top and wider at the bottom.

[0023] In the above scheme, the cross-section of the water guide notch along the extension direction of the flange is a trapezoid with a narrow top and a wide bottom, in order to control the water flow velocity and prevent the water from flowing too fast as it flows down the flange, causing secondary splashing when it flows into the upper side of the positioning block or the overflow notch.

[0024] Furthermore, the dispensing box is provided with at least one dispensing cavity, the opening of the dispensing cavity is bent outward to form a flange, the flange is provided on the upper side of the positioning block, and at least one water guiding notch is provided on the flange that penetrates the bottom end of the flange, the overflow notch and the water guiding notch are arranged opposite to each other.

[0025] In the above scheme, the dispensing box is usually provided with at least one dispensing cavity. At least one water guide notch is opened on the flange formed by bending outward at the opening of each dispensing cavity, which penetrates the bottom of the flange. The overflow notch and the water guide notch are arranged opposite to each other to avoid water leakage in local areas of the dispensing box, or water overflow or leakage in local areas of the water box.

[0026] Another object of the present invention is to provide a washing machine to prevent water overflow or leakage.

[0027] This invention discloses a washing machine equipped with the additive dispensing device described above.

[0028] In the above solution, by setting a water guide notch on the dispensing box, water leakage at the front and sides of the dispensing box is prevented from occurring as the dispensing box slides along the upper side of the positioning block of the water box, as well as water overflow or spillage, thus improving the user experience.

[0029] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0030] 1. In this invention, by opening a water-guiding notch through the bottom of the flange, the water flow on the flange is directed to the upper side of the positioning block and then flows into the water box, so as to avoid water leakage at the front and sides of the dispensing box during the sliding of the dispensing box along the upper side of the positioning block of the water box, thereby improving the user experience.

[0031] 2. In this invention, by creating a water-guiding notch that extends through the bottom of the flange, the problem of water leakage or overflow in the washing machine is solved, while preventing water containing additives from remaining on the flange of the dispensing box, which could affect the washing and care of clothes, or even corrode the dispensing box and reduce its service life.

[0032] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0033] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0034] Figure 1 This is a schematic diagram of the structure of an additive dispensing device according to an embodiment of the present invention;

[0035] Figure 2 This is an exploded view of an additive dispensing device according to an embodiment of the present invention;

[0036] Figure 3 This is a top view of an additive dispensing device according to an embodiment of the present invention;

[0037] Figure 4 yes Figure 3 Sectional view along the middle AA direction;

[0038] Figure 5 This is a side view of a dispensing box according to an embodiment of the present invention;

[0039] Figure 6 yes Figure 5 Sectional view along the BB direction;

[0040] Figure 7 This is a schematic diagram of the structure of a water box according to an embodiment of the present invention;

[0041] Figure 8 This is a top view of a water box according to an embodiment of the present invention;

[0042] Figure 9 yes Figure 8 A cross-sectional view along the CC direction.

[0043] In the picture:

[0044] 100. Water box; 101. Positioning block; 102. Overflow notch; 103. Water outlet; 104. Bottom wall; 105. Side wall; 106. Water-retaining rib;

[0045] 200. Dispensing box; 201. Flanged edge; 2011. First wall; 2011a. Outer wall surface; 2011b. Inner wall surface; 2012. Second wall; 202. Water guide notch; 203. Protrusion; 204. Dispensing cavity; 205. Reinforcing rib.

[0046] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0048] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limiting this invention.

[0049] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0050] Example 1

[0051] like Figures 1 to 9 As shown, an additive dispensing device is provided in this embodiment of the invention, including a water box 100 and a dispensing box 200. The water box 100 has an axially extending positioning block 101 inside. The opening of the dispensing box 200 is bent outward to form a flange 201. The flange 201 is located on the upper side of the positioning block 101. At least one water guiding notch 202 is provided on the flange 201, penetrating the bottom end of the flange 201.

[0052] In the above solution, by opening a water-guiding notch 202 through the bottom of the flange 201, water splashed onto the flange 201 is guided to the upper side of the positioning block 101 and then flows into the water box 100. This prevents water leakage from the front and sides of the dispensing box 200 during the sliding process along the upper side of the positioning block 101 of the water box 100, and avoids water containing additive residue remaining on the flange 201 of the dispensing box 200, which would affect the washing and care effect of clothes or even corrode the dispensing box 200.

[0053] like Figure 4 As shown in this embodiment, the lower surface of the flange 201 is provided with at least one protrusion 203 along the pulling direction. The protrusion 203 is placed on the upper side of the positioning block 101 so that the dispensing box 200 slides along the upper side of the positioning block 101 of the water box 100, making it convenient for the user to dispense the required additives.

[0054] like Figure 4 As shown, in this embodiment, there is a gap between the lower surface of the flange 201 and the upper side of the positioning block 101, so as to ensure that the water splashed onto the flange 201 flows along the flange 201 to the upper side of the positioning block 101 and flows into the interior of the water box 100 in time, preventing a large amount of water from accumulating between the flange 201 and the side wall 105 of the water box 100, causing the water box 100 to overflow or leak.

[0055] like Figure 2 , Figure 5 and Figure 6 As shown, in this embodiment, the flange 201 forms a longitudinal first wall 2011, the bottom end of the first wall 2011 is located on the upper side of the positioning block 101, and a water guide notch 202 is provided on the first wall 2011 that penetrates the bottom end of the first wall 2011.

[0056] In the above scheme, during the process of the washing machine's water inlet device feeding water into the dispensing box 200, due to excessive water pressure, some water will splash onto the first wall 2011. By setting a water guide notch 202, the water splashed onto the first wall 2011 can quickly flow to the upper side of the positioning block 101 and then flow into the water box 100.

[0057] like Figure 4 and Figure 5 As shown, in this embodiment, the first wall 2011 has an inner wall surface 2011b and an outer wall surface 2011a facing each other. The outer wall surface 2011a is disposed opposite to the side wall 105 of the delivery box 200, and the outer wall surface 2011a extends downward toward the upper side of the positioning block 101 to form an inclined surface.

[0058] In the above scheme, since the outer wall surface 2011a is an inclined surface that extends towards the upper side of the positioning block 101, the water splashed onto the outer wall surface 2011a of the first wall 2011 flows towards the upper side of the positioning block 101 under the action of gravity, thus preventing the water remaining on the outer wall surface 2011a of the first wall 2011 from flowing out from the front end and sides of the dispensing box 200 during the sliding process.

[0059] like Figure 4 and Figure 5 As shown, in this embodiment, the flange 201 also forms a transverse second wall 2012. One end of the second wall 2012 is connected to the opening of the dispensing box 200, and the other end is bent and connected to the upper end of the first wall 2011. Water on the second wall 2012 flows to the upper side of the positioning block 101 through the water guide notch 202 at the bottom of the first wall 2011.

[0060] In the above scheme, during the process of the washing machine's water inlet device feeding water into the dispensing box 200, due to excessive water pressure, some water will splash onto the first wall 2011 and the second wall 2012. The water splashed onto the second wall 2012 will flow towards the first wall 2011 under the action of gravity. The speed at which the water on the first wall 2011 flows towards the upper side of the positioning block 101 is controlled to prevent a large amount of water from accumulating on the upper side of the positioning block 101, causing the water box 100 to overflow or leak.

[0061] like Figure 4 As shown in this embodiment, the first wall 2011 is provided with a plurality of reinforcing ribs 205 that protrude from the inner wall surface 2011b and extend along the axial direction of the delivery box 200. The top of the reinforcing ribs 205 is integrally connected to the lower side surface of the second wall 2012.

[0062] In the above scheme, the reinforcing rib 205 set on the first wall 2011 not only improves the support strength of the flange 201, but also extends the service life of the delivery box 200. In addition, the reinforcing rib 205 has a simple structure, is easy to process, and has significant effects, making it suitable for industrial applications.

[0063] By providing a water-guiding notch 202 on the additive dispensing device, water leakage at the front and sides of the dispensing box 200 is prevented during the sliding of the dispensing box 200 along the upper side of the positioning block 101 of the water box 100, as well as water overflow or spillage, thus improving the user experience.

[0064] Example 2

[0065] like Figures 1 to 9 As shown, this embodiment is a further limitation of the above embodiment one. The positioning block 101 is provided with at least one overflow notch 102 that penetrates the upper side of the positioning block 101. The opening of the water guide notch 202 is arranged opposite to the overflow notch 102. The water on the flange 201 flows downward into the water box 100 through the overflow notch 102.

[0066] In the above scheme, the opening of the water guide notch 202 is positioned opposite to the overflow notch 102, so that the water splashed onto the flange 201 flows through the water guide notch 202 to the upper side of the positioning block 101 and the overflow notch 102. The water on the upper side of the positioning block 101 further flows into the overflow notch 102, and the water that accumulates in the overflow notch 102 flows into the water box 100, and finally flows into the water tank and / or washing drum of the washing machine, thereby acting on the washing and care process of clothes.

[0067] like Figure 2 and Figures 7 to 9 As shown, in this embodiment, the water box 100 includes a side wall 105 and a bottom wall 104. The side wall 105 has an inner side and an outer side that are arranged opposite to each other. The inner side is provided with a positioning block 101 that protrudes into the water box 100 and extends along the axial direction of the water box 100. The lower surface of the flange 201 is provided with a protrusion 203 that rests on the upper side of the positioning block 101 to ensure that the dispensing box 200 slides along the upper side of the positioning block 101 of the water box 100.

[0068] In this embodiment, the width of the opening of the water guide notch 202 is greater than or equal to the width of the opening at the upper end of the overflow notch 102.

[0069] In the above scheme, the width of the opening of the water guide notch 202 is greater than or equal to the width of the opening at the upper end of the overflow notch 102, so that the water splashed onto the flange 201 flows through the water guide notch 202 to the upper side of the positioning block 101 and the overflow notch 102 respectively, thus avoiding excessive water accumulation on the upper side of the positioning block 101 or the overflow notch 102, which would cause the water box 100 to overflow or leak.

[0070] In this embodiment, the cross-section of the water-guiding notch 202 along the extension direction of the flange 201 is a trapezoid that is narrower at the top and wider at the bottom.

[0071] In the above scheme, the cross-section of the water guide notch 202 along the extension direction of the flange 201 is a trapezoid with a narrow top and a wide bottom, so as to control the water flow rate and prevent the water from flowing too fast along the flange 201 and causing secondary splashing when it flows into the upper side of the positioning block 101 or the overflow notch 102.

[0072] like Figures 1 to 3 As shown, in this embodiment, the dispensing box 200 is provided with at least one dispensing cavity 204. The opening of the dispensing cavity 204 is bent outward to form a flange 201. The flange 201 is provided on the upper side of the positioning block 101. At least one water guiding notch 202 penetrating the bottom end of the flange is provided on the flange 201. The overflow notch 102 and the water guiding notch 202 are arranged opposite to each other.

[0073] In the above scheme, the dispensing box 200 is usually provided with at least one dispensing cavity 204. Each dispensing cavity 204 has at least one water guiding notch 202 that penetrates the bottom end of the flange formed by bending outward at the opening. The overflow notch 102 and the water guiding notch 202 are arranged opposite to each other to avoid water leakage in a local area of ​​the dispensing box 200, or water overflow or leakage in a local area of ​​the water box 100.

[0074] like Figure 8 and Figure 9 As shown, in this embodiment, the bottom wall 104 of the water box 100 is provided with a water outlet 103, which is connected to the water tank and / or washing drum of the washing machine (not shown in the figure) to provide water for washing or caring for clothes.

[0075] like Figure 8 and Figure 9 As shown, in this embodiment, the upper side of the bottom wall 104 of the water box 100 extends downward from the bottom of the positioning block 101 on one side to form a slope, so as to guide the water flowing downward through the overflow notch 102 into the interior of the water box 100.

[0076] like Figure 7 and Figure 8 As shown, in this embodiment, the bottom wall 104 of the water box 100 is provided with a water-blocking rib 106 that protrudes from the upper side of the bottom wall 104 and extends along the axial direction of the water box 100, so as to adjust the flow rate and direction of the water flowing into the water box 100, so that the water in the water box 100 flows into the water tank and / or washing drum of the washing machine through the water outlet 103.

[0077] By using the above-mentioned additive dispensing device, and by opening a water guide notch 202 that penetrates the bottom of the flange 201 and an overflow notch 102 that are arranged oppositely, the problem of water leakage or overflow in the washing machine is solved. At the same time, it prevents water containing additives from remaining on the flange 201 of the dispensing box 200, which would affect the washing and care of clothes, or even corrode the dispensing box 200 and reduce its service life.

[0078] Example 3

[0079] This embodiment provides a washing machine equipped with any of the additive dispensing devices described above.

[0080] like Figure 2 , Figures 7 to 9 As shown, in this embodiment, the water inlet device of the washing machine (not shown in the figure) feeds water into the dispensing box 200. Most of the water flows into the dispensing chamber 204 of the dispensing box 200, and then flows into the water box 100 through the siphon effect. Finally, it flows into the water tank and / or washing drum of the washing machine through the water outlet 103 of the water box 100, thus acting on the washing and care process of the clothes. Some water splashes onto the flange 201 of the dispensing box 200 and the upper side of the positioning block 101. The water splashed onto the flange 201 flows through the water guide notch 202 to the upper side of the positioning block 101 and the overflow notch 102. The water on the upper side of the positioning block 101 further flows into the overflow notch 102. The water that further accumulates in the overflow notch 102 flows into the water box 100, and finally flows into the water tank and / or washing drum of the washing machine, thus acting on the washing and care process of the clothes.

[0081] The above-mentioned washing machine solves the problem of water overflow or leakage, extends the service life of the detergent dispenser 200, and improves the user experience.

[0082] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An additive dispensing device, comprising a water tank and a dispensing box, characterized in that: The water box has an axially extending positioning block inside. The opening of the dispensing box is bent outward to form a flange. The flange is located on the upper side of the positioning block. The lower surface of the flange has at least one protrusion along the pulling direction. The protrusion rests on the upper side of the positioning block so that the dispensing box can slide along the upper side of the positioning block of the water box, making it convenient for the user to dispense the required additives. At least one water-guiding notch is provided on the flange, penetrating the bottom end of the flange; at least one overflow notch is provided on the positioning block, penetrating the upper side of the positioning block, and the opening of the water-guiding notch is opposite to the overflow notch, so that water on the flange flows downward into the water box through the overflow notch; the cross-section of the water-guiding notch along the extension direction of the flange is a trapezoid that is narrower at the top and wider at the bottom.

2. The additive dispensing device according to claim 1, characterized in that: The flange has a longitudinal first wall, the bottom end of which is located on the upper side of the positioning block, and a water-guiding notch is provided on the first wall that penetrates the bottom end of the first wall.

3. The additive dispensing device according to claim 2, characterized in that: The first wall has an inner wall surface and an outer wall surface facing away from each other. The outer wall surface is disposed opposite to the side wall of the delivery box, and the outer wall surface extends downward toward the upper side of the positioning block to form an inclined surface.

4. The additive dispensing device according to claim 3, characterized in that: The flange also forms a second transverse wall, one end of which is connected to the opening of the delivery box, and the other end is bent and connected to the upper end of the first wall.

5. The additive dispensing device according to claim 4, characterized in that: The first wall is provided with a plurality of reinforcing ribs that protrude from the inner wall surface and extend along the axial direction of the delivery box, and the top of the reinforcing ribs is integrally connected to the lower side of the second wall.

6. The additive dispensing device according to claim 1, characterized in that: The width of the opening of the water guide notch is greater than or equal to the width of the opening at the upper end of the overflow notch.

7. The additive dispensing device according to claim 6, characterized in that: The dispensing box has at least one dispensing cavity. The opening of the dispensing cavity is bent outward to form a flange. The flange is located on the upper side of the positioning block. At least one water guide notch is opened on the flange, penetrating the bottom end of the flange. The overflow notch and the water guide notch are arranged opposite to each other.

8. An additive dispensing device according to any one of claims 1 to 7, characterized in that: The bottom wall of the water tank is provided with a water outlet, which is connected to the water tank and / or washing drum of the washing machine to provide water for washing or caring for clothes. The upper side of the bottom wall of the water box extends downward from the bottom of the positioning block on one side to form a slope, so as to guide the water flowing down through the overflow notch into the interior of the water box.

9. An additive dispensing device according to claim 8, characterized in that: The bottom wall of the water tank is provided with a water-blocking rib that protrudes from the upper side of the bottom wall and extends along the axial direction of the water tank, so as to adjust the flow rate and direction of the water flowing into the water tank, so that the water in the water tank flows into the water tank and / or washing drum of the washing machine through the water outlet.

10. A washing machine, characterized in that: It is equipped with the additive dispensing device as described in any one of claims 1 to 9.

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