A water box assembly of a washing machine and a washing machine

Abstract

The application discloses a water box assembly of a washing machine and the washing machine. The water box assembly comprises a water box, a detergent box, a slide rail which is fixed on the water box and used for pulling out the detergent box, and an elastic component which is used for pushing open the detergent box. The slide rail has two slide rail parts which are arranged left and right. A slide groove which is matched with the slide rail parts is arranged on the detergent box. The elastic component is sleeved outside the slide rail parts. The slide rail parts and the slide groove can realize smooth and stable pulling out of the detergent box, can completely solve the problem that the detergent box is not smoothly pulled out and shakes, can greatly improve product quality, can increase user experience and favor, and the implementation is convenient. The elastic component can push open the detergent box and realize automatic opening. The elastic component is sleeved outside the slide rail parts, is beneficial to compact structure arrangement, avoids occupying a large space, and is beneficial to controlling elastic force in the front and back directions.

Description

Technical Field

[0001] This invention belongs to the field of washing machine technology, specifically relating to a water tank assembly for a washing machine and a washing machine having the water tank assembly. Background Technology

[0002] As the washing machine industry continues to develop, continuously improving product quality and user experience is crucial to winning over consumers. Attention to detail is increasingly becoming a key criterion for judging product quality, and for any company seeking sustainable growth, improving product quality is an inevitable choice.

[0003] Most current top-loading washing machine models use a pull-out water tray. The pull-out mechanism in most existing water trays relies primarily on line contact between components to achieve the pull-out motion. This inevitably leads to uneven pulling and wobbling during the detergent dispenser's operation, resulting in high friction and lateral movement. While some attempts to optimize the pull-out effect include adding auxiliary rollers, the water tray's structural design is primarily for storing and rinsing detergent. Therefore, most water tray components are cavity-shaped, which is prone to deformation. This means that the rollers do not significantly improve the pull-out effect, and wobbling still occurs.

[0004] The high friction of the detergent dispenser when pulled out and its tendency to wobble in the left and right directions mean that the design of the automatic opening mechanism for the water dispenser needs to consider providing a large thrust component, continuing to provide sufficient forward thrust when the detergent dispenser wobbles from side to side, and also taking into account the space layout. As a result, the existing automatic opening mechanisms for water dispensers are not very effective.

[0005] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0006] To address the aforementioned problems in the prior art, this invention proposes a water tank assembly for a washing machine. By incorporating a slide rail and a slide groove, the detergent dispenser can be smoothly and stably pulled out, and an elastic component can be incorporated to automatically open the detergent dispenser.

[0007] To achieve the above-mentioned objectives, the present invention employs the following technical solution:

[0008] A water tank assembly for a washing machine, comprising:

[0009] Water box;

[0010] A detergent dispenser, which is retractable and located inside the water tank;

[0011] A slide rail, which is fixed on the water box and used for pulling out the detergent box;

[0012] A flexible component for actuating the opening of the detergent dispenser;

[0013] The slide rail has two slide rail sections arranged on the left and right sides. The detergent box is provided with a slide groove that matches the slide rail section. The elastic component is sleeved on the outside of the slide rail section.

[0014] Furthermore, the detergent box has a box body and first folded edges extending outward along the left and right sides of the box body, and the sliding groove is located at the lower part of the first folded edges.

[0015] Furthermore, the detergent dispenser is provided with a receiving slot, and the elastic member is located within the receiving slot.

[0016] Furthermore, a limiting end face for blocking the front end of the elastic component is provided at the front end of the receiving groove.

[0017] Furthermore, the receiving groove is an arc-shaped groove, the sliding groove is an arc-shaped groove, and the receiving groove and the sliding groove are coaxially arranged.

[0018] Furthermore, the radius of the receiving groove is larger than the radius of the chute.

[0019] Furthermore, it also includes a locking structure provided on the water box, which is used to control the opening and closing of the detergent box.

[0020] Furthermore, the locking structure includes a sensor switch for sensing that the detergent dispenser is closed, a stop for locking the detergent dispenser in the closed state, and a drive structure for driving the stop to extend or retract.

[0021] Furthermore, when the detergent dispenser reaches the closed state, the detergent dispenser triggers the sensor switch, and the drive structure pushes the stop block to extend, locking the detergent dispenser.

[0022] Furthermore, the sensor switch has a downwardly extending control lever, which touches the control lever when the detergent dispenser is in the closed state.

[0023] Furthermore, the control lever and the stop block are positioned one in front of the other, with the stop block located in front of the control lever.

[0024] Furthermore, the detergent dispenser is provided with a movable engaging groove that fits onto the slide rail, and the slide rail engages within the engaging groove.

[0025] Furthermore, the engaging groove is disposed adjacent to the receiving groove.

[0026] Furthermore, the engaging groove and the sliding groove are coaxially arranged.

[0027] Furthermore, the engagement groove and the sliding groove have the same radius.

[0028] Furthermore, the slide rail is a circular metal rod, and the slide groove is an arc-shaped groove that matches the slide rail.

[0029] Furthermore, the slide rail also has a mounting portion located at the rear end and a connecting portion connecting the slide rail portion and the mounting portion.

[0030] Furthermore, a downwardly bent positioning part is provided at the front end of the slide rail, and a second folded edge extending outward on the left and right sides of the water box for fixing the slide rail.

[0031] Furthermore, a positioning hole matching the positioning part is provided on the second folded edge, and the positioning part is located in the positioning hole.

[0032] Furthermore, the water box is provided with a fixing groove that matches the connecting part, and the mounting part is located in the fixing groove.

[0033] Furthermore, the water box has an upper part and a lower part, and a plurality of fixing grooves are provided at intervals at the rear end of the lower part.

[0034] Furthermore, the connecting portion is inclined upward and backward.

[0035] Furthermore, a through groove is provided on the lower box body for the connecting part to extend out.

[0036] Based on the water tank assembly of the washing machine described above, the present invention also provides a washing machine having the above-mentioned water tank assembly, which achieves smooth and stable pulling of the detergent box by setting a slide rail and a slide groove, and sets an elastic component to realize automatic opening of the detergent box.

[0037] A washing machine having the aforementioned water tank assembly.

[0038] Compared with existing technologies, the advantages and positive effects of this invention are as follows: By setting the slide rail and the slide groove, the detergent dispenser can be smoothly and stably pulled out, completely solving the problem of the detergent dispenser not pulling out smoothly and being accompanied by shaking. It also greatly improves product quality, increases user experience, and is convenient to implement. When the detergent dispenser is pulled out, the slide groove moves on the slide rail, which facilitates the smooth pulling out of the detergent dispenser. Furthermore, the elastic component can push the detergent dispenser open, achieving automatic opening. The elastic component is sleeved on the outside of the slide rail, which helps to make the structure compact, avoids occupying a large space, and facilitates control of the elastic force in the front-to-back direction.

[0039] Other features and advantages of the present invention will become clearer after reading the detailed embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the structure of a first embodiment of a water tank assembly for a washing machine proposed in this invention;

[0042] Figure 2 for Figure 1 A structural schematic diagram showing a cross-sectional view of the central slide rail section along its axis;

[0043] Figure 3 for Figure 2 Enlarged schematic diagram of the middle section structure;

[0044] Figure 4 for Figure 1 A cross-sectional view of the centerline of the water box assembly.

[0045] Figure 5 for Figure 1 A schematic diagram of the exploded structure;

[0046] Figure 6 This is a schematic diagram of the slide rail structure;

[0047] Figure 7 This is a schematic diagram of the structure under the water box;

[0048] Figure 8 This is a schematic diagram of the detergent dispenser.

[0049] Figure 9 for Figure 8 A structural diagram from another angle;

[0050] Figure 10 for Figure 9 Enlarged structural diagram of region A in the middle;

[0051] Figure 11 This is a schematic diagram of the locking structure;

[0052] Figure 12 A control panel for a washing machine equipped with a water tank assembly;

[0053] Figure 13 This is a schematic diagram of the structure of a second embodiment of a water tank assembly for a washing machine proposed in this invention;

[0054] Figure 14 for Figure 13 A magnified structural diagram of region B in the middle;

[0055] Figure 15 for Figure 13 A schematic diagram of the middle slide rail. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0057] In the description of this invention, it should be noted that the terms "upper," "lower," "left," and "right," etc., indicate the orientation or positional relationship based on the positional relationship shown in the accompanying drawings. In the normal operating state of the water tank assembly, the direction closer to the user is "front," and vice versa. In the left-right direction, the direction closer to the center of the water tank assembly is "inner," and vice versa. These terms are used only for the convenience of describing the invention and for 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 limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0058] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0059] See Figures 1-12The first embodiment of the water tank assembly for a washing machine proposed in this invention includes a water tank 10, a detergent dispenser 20, and a slide rail 30. The detergent dispenser 20 is removable and located inside the water tank 10, which is fixed inside the washing machine. The slide rail 30 is fixed to the water tank 20 and is used for pulling out the detergent dispenser 20. The detergent dispenser 20 has a groove 23 that matches the slide rail 30, and the slide rail 30 is located within the groove 23. The slide rail 30 has two slide rail portions 31 arranged left and right, which support the groove 23. Pulling out the detergent dispenser 20 is equivalent to the relative movement of the slide rail portions 31 and the groove 23. When the detergent dispenser 20 is pulled out, the slide rail 31 moves relative to the slide groove 23 in the front-back direction, making the pull-out smooth. The detergent dispenser 20 has two slide grooves 23 on the left and right sides, and the slide rail 30 has two slide rail parts 31 that match the two slide grooves 23. This ensures that when the detergent dispenser 20 is pulled out in the front-back direction, it moves along the slide rail parts 31, preventing the detergent dispenser 20 from wobbling in the left-right direction. An elastic member 40 is used to push the detergent dispenser 20 open, and the elastic member 40 is sleeved on the outside of the slide rail parts 31.

[0060] By setting up the slide rail 31 and the slide groove 23, when the detergent box 20 is pulled out, the slide rail 31 and the slide groove 23 move relative to each other, achieving smooth and stable pulling of the detergent box 20. This completely solves the problem of the detergent box 20 not pulling out smoothly and being accompanied by shaking, and also greatly improves product quality, increases user experience, and is convenient to implement. When the detergent box 20 is pulled out, the slide groove 30 moves on the slide rail, which is conducive to the smooth pulling of the detergent box 20. Then, through the elastic component 40, the detergent box 20 can be pushed open to achieve automatic opening. The elastic component 20 is sleeved on the outside of the slide rail 31, which is conducive to a compact structural layout, avoids occupying a large space, and is conducive to controlling the elastic force in the front and back directions. The slide rail 31 is located in the slide groove 23 and moves relative to each other in the front and back directions, avoiding the shaking of the detergent box 20 in the left and right directions, which helps to increase the stability during the pulling process.

[0061] See Figure 3 As shown, the elastic member 40 is preferably a spring. When the detergent dispenser 20 is closed, the elastic member 20 is compressed, providing a forward pushing force to the detergent dispenser 20. The water tank assembly also includes a locking structure 50 for controlling the opening and closing of the detergent dispenser 20, which is fixed to the water tank 10. When the detergent dispenser 20 is closed, the elastic member 20 provides a forward pushing force to the detergent dispenser 20, and the locking structure 50 locks the detergent dispenser 20, preventing it from moving forward to open. When the locking structure 50 is released, the detergent dispenser 20 can move forward under the push of the elastic member 20, thus automatically opening the detergent dispenser 20.

[0062] See Figures 8-10 As shown, the detergent dispenser 20 has a body 21 and first flanges 22 extending outward from the left and right sides of the body 21, with the first flanges 22 resting on the slide rail 30. A groove 23 matching the slide rail 31 is provided at the lower end of the first flange 22. In this embodiment, the groove 23 is formed on the first flange 22, meaning the groove 23 and the first flange 22 are integrally formed, and the body 21, the first flange 22, and the groove 23 are integrally formed by injection molding. In other embodiments, the groove 23 can be a separate component fixed to the first flange 22, meaning the groove 23 can be made of a different material than the first flange 22.

[0063] See Figure 6 As shown, the slide rail 30 has two slide rail parts 31 arranged in parallel to each other, a mounting part 32 located at the rear end, and a connecting part 33 connecting the slide rail parts 31 and the mounting part 32. The two slide rail parts 31 are matched with two slide grooves 23. By setting the two slide rail parts 31 to be connected as a whole, it is beneficial to ensure the structural strength of the slide rail 30 and the stability after fixing.

[0064] The slide rail 30 is fixed to the water tank 10 with a fixing groove 11 that matches the mounting part 32, and the mounting part 32 is located in the fixing groove 11. When the detergent box 20 is pulled out, the slide rail 30 is subjected to frictional force in the front-back direction. Therefore, the fixing groove 11 is provided at the rear of the water tank 10 to make the slide rail 30 firmly fixed when subjected to frictional force in the front-back direction. The water tank 10 has outwardly extending second folded edges 12 on the left and right sides, and the slide rail part 31 is fixed on the second folded edges 12.

[0065] See Figure 1 As shown, the water box 10 has an upper water box 15 and a lower water box 16. The upper water box 15 and the lower water box 16 are sealed at different heights. A plurality of fixing grooves 11 are provided at intervals at the rear end of the lower water box 16. The fixing grooves 11 extend in the left and right directions, which is beneficial to the firmness of the mounting part 32 and can withstand a large frictional force in the front and back directions.

[0066] The plane where the mounting part 32 is located is higher than the plane where the slide rail part 31 is located, or in other words, the plane where the axis of the mounting part 32 is located is higher than the plane where the axis of the slide rail part 31 is located. This requires the connecting part 33 to be inclined. The connecting part 33 is inclined upward and backward. A through groove 161 for the connecting part 33 to extend is provided on the lower box body 16. The fixing groove 11 is located behind the upper water box 15.

[0067] The detergent dispenser 20 is also provided with a receiving groove 24, and an elastic member 40 is located within the receiving groove 24. The slide rail 31 is located within the slide groove 23, and the elastic member 40 is sleeved on the outside of the slide rail 31. The slide rail 31 is arranged in the front-back direction, and the receiving groove 24 and the slide groove 23 are arranged in the front-back direction. In order to ensure that the detergent dispenser is subjected to even force, an elastic member 40 is fitted on both slide rails 31, that is, a receiving groove 24 and a slide groove 23 are provided at the lower end of each first folded edge 22.

[0068] A limiting end face 241 for stopping the front end of the elastic member 40 is provided at the front end of the receiving groove 24. The rear end of the elastic member 40 is located in front of the through groove 161, and the periphery of the through groove 161 stops the elastic member 40. During the process of pulling out the detergent box 20, the detergent box 20 and the slide rail 30 move relative to each other in the front-back direction, which causes the distance between the limiting end face 241 and the through groove 161 to change, so that the spring member 40 is compressed to store energy or extends to release energy.

[0069] The fixing groove 11 is located behind the water box 15, the mounting part 32 is located behind the cavity of the box body 10, and the slide rail part 31 is located inside the cavity. In order to seal the cavity, a sealing element 35 is fitted on the slide rail 30 to seal the through groove 161.

[0070] In this embodiment, the slide rail 30 is a circular metal rod, which helps to ensure the smoothness of the slide rail 30 surface, has a low coefficient of friction, and helps to reduce the friction between the slide groove 23 and the slide rail 30, thereby reducing the force required to push the detergent box 20 out. Preferably, the slide groove 23 is an arc-shaped groove that matches the slide rail 30, and the slide groove 23 covers the outside of the slide rail 30 to prevent the slide groove 23 from separating from the slide rail 30 during relative forward and backward movement.

[0071] The receiving groove 24 is an arc-shaped groove, coaxially arranged with the slide rail 23, and the radius of the receiving groove 24 is larger than the radius of the slide rail 23. To ensure a tight fit between the detergent dispenser 20 and the slide rail 31, allowing only relative movement in the forward and backward directions during the pulling process, the detergent dispenser 20 is provided with a movable engaging groove 25 that fits onto the slide rail 31. The slide rail 31 engages within the engaging groove 25. The engaging groove 25 is a bottom-opening groove, and the opening width of the engaging groove 25 is smaller than the diameter of the slide rail 31.

[0072] The engaging groove 25 and the receiving groove 24 are arranged adjacent to each other, and the limiting end face 241 is the adjacent end face of the engaging groove 25 and the receiving groove 24. The engaging groove 25 and the sliding groove 23 have the same radius, and the engaging groove 25, the sliding groove 23 and the receiving groove 24 are all coaxially arranged.

[0073] See Figure 11As shown, the locking structure 50 includes a sensor switch 51 for sensing that the detergent dispenser 20 is closed, a stop 52 for locking the detergent dispenser 20 in the closed state, and a drive structure for extending and retracting the stop 52. When the detergent dispenser 20 is closed, it triggers the sensor switch 51, after which the drive structure pushes the stop 52 to extend, preventing the detergent dispenser 20 from moving forward, thus locking the detergent dispenser 20. When the detergent dispenser 20 is closed, the elastic member 40 applies a forward pushing force to the detergent dispenser 20, preventing the stop 52 from moving forward. Upon receiving a command to open the detergent dispenser 20, the drive structure drives the stop 52 to retract, and the detergent dispenser 20 automatically moves forward and opens under the pushing force of the elastic member 40.

[0074] Specifically, the induction switch 51 has a downwardly extending control lever. When the detergent dispenser 20 reaches the closed state, the rear end of the detergent dispenser 20 touches the induction switch 51. The stop block 52 is located in front of the detergent dispenser 20. After the stop block 52 extends, it stops at the front end of the rear wall of the detergent dispenser 20, preventing the detergent dispenser from moving forward, that is, the detergent dispenser 20 is locked.

[0075] See Figures 13-15 The second embodiment of the water tank assembly of a washing machine proposed in this invention differs from the first embodiment in that a downwardly bent positioning part is provided at the front end of the slide rail 30, while the rest can adopt the same structure as the first embodiment.

[0076] A water tank assembly 100 for a washing machine includes a water tank 10, a detergent dispenser 20, and a slide rail 30. The detergent dispenser 20 is removable and located within the water tank 10, which is fixed inside the washing machine. The slide rail 30 is fixed to the water tank 20 and is used for pulling out the detergent dispenser 20. The detergent dispenser 20 has a groove 23 that matches the slide rail 30, and the slide rail 30 is located within the groove 23. The slide rail 30 has two slide rail portions 31 arranged left and right, which support the groove 23. Pulling out the detergent dispenser 20 is equivalent to the relative movement of the slide rail portions 31 and the groove 23. When the detergent dispenser 20 is pulled out, the slide rail 31 moves relative to the slide groove 23 in the front-back direction, making the pull-out smooth. The detergent dispenser 20 has two slide grooves 23 on the left and right sides, and the slide rail 30 has two slide rail parts 31 that match the two slide grooves 23. This ensures that when the detergent dispenser 20 is pulled out in the front-back direction, it moves along the slide rail parts 31, preventing the detergent dispenser 20 from wobbling in the left-right direction. The elastic member 40 is used to push the detergent dispenser 20 open, and the elastic member 40 is sleeved on the outside of the slide rail parts 31.

[0077] By setting up the slide rail 31 and the slide groove 23, when the detergent box 20 is pulled out, the slide rail 31 and the slide groove 23 move relative to each other, achieving smooth and stable pulling of the detergent box 20. This completely solves the problem of the detergent box 20 not pulling out smoothly and being accompanied by shaking, and also greatly improves product quality, increases user experience, and is convenient to implement. When the detergent box 20 is pulled out, the slide groove 30 moves on the slide rail, which is conducive to the smooth pulling of the detergent box 20. Then, through the elastic component 40, the detergent box 20 can be pushed open to achieve automatic opening. The elastic component 20 is sleeved on the outside of the slide rail 31, which is conducive to a compact structural layout, avoids occupying a large space, and is conducive to controlling the elastic force in the front and back directions. The slide rail 31 is located in the slide groove 23 and moves relative to each other in the front and back directions, avoiding the shaking of the detergent box 20 in the left and right directions, which helps to increase the stability during the pulling process.

[0078] The slide rail 30 is fixed to the water tank 10 with a fixing groove 11 that matches the mounting part 32, and the mounting part 32 is located in the fixing groove 11. A downwardly bent positioning part 34 is provided at the front end of the slide rail part 31. Second folded edges 12 extending outwards are provided on the left and right sides of the water tank 10. The slide rail part 31 is fixed to the second folded edges 12, and positioning holes 121 matching the positioning part 34 are provided on the second folded edges 12, with the positioning part 34 located in the positioning holes 121. By fixing the mounting part 32 at the rear and the positioning part 34 at the front of the slide rail 30, when the detergent box 20 is pulled out, the slide rail 30 is subjected to frictional force in the front-back direction. Therefore, the fixing groove 11 is provided at the rear of the water tank 10, and the positioning part 34 is located in the vertically spaced hole 121, so that the slide rail 30 is firmly fixed when subjected to frictional force in the front-back direction.

[0079] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by the present invention.

Claims

1. A water tank assembly for a washing machine, characterized in that, include: Water box; A detergent dispenser, which is retractable and located inside the water tank; A slide rail, which is fixed on the water box and used for pulling out the detergent box; A flexible component for actuating the opening of the detergent dispenser; The slide rail has two slide rail sections arranged on the left and right sides, and the detergent box is provided with a slide groove that matches the slide rail section. The elastic member is sleeved on the outside of the slide rail section. The slide rail also has a mounting part located at the rear end and a connecting part connecting the slide rail part and the mounting part, the connecting part being inclined upward and backward; the water box has a water box upper part and a water box lower part, a through groove for the connecting part to extend out is provided in the water box lower part, and a sealing element is fitted on the slide rail; the detergent box has a movable engaging groove fitted on the slide rail part, and the slide rail part engaging in the engaging groove.

2. The water box assembly according to claim 1, characterized in that, The detergent box has a box body and first folded edges extending outward along the left and right sides of the box body, respectively, and the sliding groove is located at the lower part of the first folded edges.

3. The water box assembly according to claim 1, characterized in that, The detergent dispenser is also provided with a receiving groove, and the elastic component is located in the receiving groove; a limiting end face for blocking the front end of the elastic component is provided at the front end of the receiving groove.

4. The water box assembly according to claim 3, characterized in that, The receiving groove is an arc-shaped groove, the sliding groove is an arc-shaped groove, and the receiving groove and the sliding groove are coaxially arranged.

5. The water tank assembly according to any one of claims 1 to 4, characterized in that, It also includes a locking structure provided on the water box, which is used to control the opening and closing of the detergent box.

6. The water box assembly according to claim 5, characterized in that, The locking structure includes a sensor switch for sensing that the detergent dispenser is closed, a stop for locking the detergent dispenser in the closed state, and a drive structure for driving the stop to extend or retract.

7. The water box assembly according to claim 6, characterized in that, The sensor switch has a downwardly extending control lever. When the detergent dispenser is in the closed state, the detergent dispenser touches the control lever.

8. A washing machine, characterized in that, It has a water box assembly as described in any one of claims 1 to 7.

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