Spray assembly and control method thereof and washing and drying machine

Abstract

The present application provides a spray assembly, a control method thereof, and a washer-dryer. The spray assembly is arranged at the connection point between the drying air duct and the condensing air duct of the washer-dryer, and the spray assembly includes: a water inlet pipe, the water inlet end of which is connected to a water source; a distribution chamber, the water outlet end of the water inlet pipe is connected to the distribution chamber; a movable distribution member is arranged in the distribution chamber, and the distribution member is arranged in the distribution chamber with at least two working positions, so that different flow areas exist inside the distribution chamber. The present application changes the flow area in the distribution chamber, changes the flow rate and spraying area of ​​the spray water, and can achieve a better cleaning effect, reduce or even avoid cleaning dead corners, and improve the effect of spraying to clean hair debris.

Description

Technical Field

[0001] The present application belongs to the technical field of washer-dryers, and specifically relates to a spray assembly, a control method thereof, and a washer-dryer. Background Art

[0002] At present, washing machines with drying function usually use the method of adding filters to filter the hair in the air duct. One part of the filter is set under the door, which is convenient for users to open and clean; the other part of the filter is set in the condensing air duct, and the hair on this part of the filter is cleaned by spraying with a spray head to avoid blockage.

[0003] In the existing spray structure, the nozzle is fixedly arranged, and water is usually sprayed in a fixed direction, which inevitably leads to the formation of spray dead corners in some areas that are not sprayed, making it difficult to rinse clean and resulting in hair residue. Summary of the invention

[0004] Therefore, the present application provides a spray assembly and a control method thereof and a washer-dryer, which can solve the problem in the prior art that the filter in the condensation air duct is not sprayed cleanly and there will be hair residue.

[0005] In order to solve the above problems, the present application provides a spray assembly, which is arranged at the connection point between the drying air duct and the condensing air duct of the washer-dryer, and the spray assembly includes:

[0006] A water inlet pipe, the water inlet end of which is connected to a water source;

[0007] A distribution chamber, wherein the water outlet end of the water inlet pipe is connected to the distribution chamber; a movable distribution member is arranged in the distribution chamber, and the distribution member is arranged in at least two working positions in the distribution chamber, so that different flow areas exist inside the distribution chamber.

[0008] In some embodiments,

[0009] At least two side walls of the distribution chamber are provided with water outlet holes so that water can be discharged in at least two directions.

[0010] In some embodiments,

[0011] A filter is also provided between the drying air duct and the condensing air duct, and the distribution chamber includes a first side wall and a second side wall, the first side wall is arranged parallel to the filter, and the second side wall is arranged vertically to the filter; the water outlet is provided on the first side wall and the second side wall.

[0012] In some embodiments,

[0013] The spray assembly also includes a driving member, and the driving member is used to drive the distribution member to move.

[0014] In some embodiments,

[0015] The distribution member comprises a rotating cam, and a rotating surface of the cam is arranged parallel to a flow direction inside the distribution chamber.

[0016] In some embodiments,

[0017] The driving member comprises a motor, and the motor is arranged outside the distribution chamber, and an output shaft of the motor is passed through the distribution chamber and connected with the camshaft.

[0018] According to another aspect of the present application, a control method of the spray assembly as described above is provided, comprising:

[0019] The washer-dryer operates in a drying mode;

[0020] The water inlet pipe injects water into the distribution chamber, and at the same time changes the position of the distribution member in the distribution chamber, thereby changing the flow area in the distribution chamber.

[0021] In some embodiments,

[0022] Detecting whether the washer-dryer has completed drying;

[0023] If completed, stop the water inlet pipe from injecting water into the distribution chamber;

[0024] If it is not completed, the water inlet pipe continues to inject water into the distribution chamber.

[0025] According to another aspect of the present application, a washer-dryer is provided, comprising the spray assembly as described above or a spray assembly operated according to the control method as described above.

[0026] A spray assembly provided in the present application is arranged at the connecting point of the drying air duct and the condensing air duct of a washer-dryer, and the spray assembly includes: a water inlet pipe, whose water inlet end is connected to a water source; a distribution chamber, whose water outlet end is connected to the distribution chamber; a movable distribution component is provided in the distribution chamber, and the distribution component is provided with at least two working positions in the distribution chamber so that different flow areas exist inside the distribution chamber.

[0027] This application has the following beneficial effects:

[0028] By connecting the distribution chamber at the water outlet end of the water inlet pipe and arranging a distribution piece in the distribution chamber, the flow area in the distribution chamber can be changed, and the flow rate and spraying area of ​​the spray water can be changed, which can achieve a better cleaning effect, reduce or even avoid cleaning dead corners, and improve the effect of spray cleaning hair debris. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the implementation methods or the prior art descriptions. The drawings described below are merely exemplary, and for those of ordinary skill in the art, other implementation drawings can be derived from the provided drawings without creative work.

[0030] Figure 1 This is a schematic diagram of the internal structure of the washer-dryer according to an embodiment of the present application;

[0031] Figure 2 For the embodiment of this application Figure 1 Partial structural section view;

[0032] Figure 3 This is a schematic diagram of the structure of the spray assembly of an embodiment of the present application;

[0033] Figure 4 This is a schematic diagram of a first state of the cam structure in the flow channel according to an embodiment of the present application;

[0034] Figure 5 This is a schematic diagram of a second state of the cam structure in the flow channel according to an embodiment of the present application;

[0035] Figure 6 This is a schematic diagram of a third state of the cam structure in the flow channel according to an embodiment of the present application;

[0036] Figure 7 This is a corresponding relationship diagram between the cam rotation angle and the flow area in the distribution chamber according to the embodiment of the present application, wherein the horizontal axis is the cam rotation angle, and the vertical axis is the flow area in the distribution chamber.

[0037] The reference numerals are:

[0038] 1. Drying air duct; 2. Condensation air duct; 3. Drum;

[0039] 41. Water inlet pipe;

[0040] 42, distribution chamber; 421, first water outlet; 422, second water outlet;

[0041] 43. Cam; 44. Filter; 45. Motor. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0044] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0045] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0046] See also Figures 1 to 7 As shown, according to an embodiment of the present application, a spray assembly is provided at the connection point between the drying air duct 1 and the condensing air duct 2 of the washer-dryer, and the spray assembly includes:

[0047] A water inlet pipe 41, the water inlet end of which is connected to a water source;

[0048] The distribution chamber 42 is connected to the water outlet end of the water inlet pipe 41 ; a movable distribution member is provided in the distribution chamber 42 , and the distribution member is provided with at least two working positions in the distribution chamber 42 so that different flow areas exist inside the distribution chamber 42 .

[0049] The present application connects the distribution chamber 42 to the water outlet end of the water inlet pipe 41, and sets a distribution component in the distribution chamber 42 to change the flow area in the distribution chamber 42, change the flow rate and spraying area of ​​the spray water, thereby achieving a better cleaning effect, reducing or even avoiding cleaning dead corners, and improving the effect of spraying to clean hair debris.

[0050] A distribution member is arranged in the distribution chamber 42, and the distribution member is movably arranged, so that the flow area in the distribution chamber 42 can be changed. Since the water inlet pipe 41 injects water into the distribution chamber 42, the change in the flow area inside the distribution chamber 42 causes the water outlet pressure and water outlet speed of the water outlet to change. This non-uniform water outlet method can improve the efficiency of cleaning hair debris.

[0051] With regard to the structure of the traditional spray filter 44, there is only one fixed spraying direction. The present application sets a distribution chamber 42 at the water outlet end of the water inlet pipe 41 and changes the flow area of ​​the distribution chamber 42. This will change the speed of the spraying water, which is beneficial to spray cleaning, especially when the flow area is small and the spraying force is large, which is more conducive to spraying to dead corners. This improves the efficiency of spray cleaning of hair debris and avoids the residue of hair debris.

[0052] In some embodiments,

[0053] At least two side walls of the distribution chamber 42 are provided with water outlet holes so that water can be discharged in at least two directions.

[0054] The distribution chamber 42 adds a spraying direction, changing from the traditional single direction (meaning spraying only at the filter 44) to multiple directions, so that the spraying area is increased and the blind corner area of ​​the spraying is relatively reduced, thus improving the efficiency of spraying and cleaning hair debris and avoiding hair debris residue.

[0055] In some embodiments,

[0056] A filter screen 44 is also provided between the drying air duct 1 and the condensing air duct 2, and the distribution chamber 42 includes a first side wall and a second side wall, the first side wall is arranged parallel to the filter screen 44, and the second side wall is arranged vertically to the filter screen 44; the water outlet is provided on both the first side wall and the second side wall.

[0057] The arrangement structure of the water outlet on the distribution chamber 42 can refer to the position of the filter 44. Specifically, the distribution chamber 42 is provided with a water outlet on the first side wall parallel to the filter 44 and on the second side wall perpendicular to the filter 44. Figure 2 and Figure 3 As shown, a second water outlet hole 422 is provided on the first side wall, and a first water outlet hole 421 is provided on the second side wall. The second water outlet hole 422 sprays directly toward the filter screen 44, while the first water outlet hole 421 sprays obliquely toward the filter screen 44 and the surrounding area, so that all places where hair debris may exist can be sprayed.

[0058] In the conventional filter 44 spray structure, the spraying surface of the nozzle is substantially equivalent to the area of ​​the filter 44, which causes hair debris to remain between the filter 44 and the surrounding fixings. The present application provides a first water outlet 421 on the second side wall, which expands the spraying area and can spray the surrounding fixings, thereby ensuring that the hair debris remaining between the filter 44 and the surrounding fixings is cleaned.

[0059] In some embodiments,

[0060] The spray assembly also includes a driving member, and the driving member is used to drive the distribution member to move.

[0061] The movement of the distribution component is driven by the driving component, which is convenient for adjusting the activity state of the distribution component, such as the rate of change of the flow area, so as to better clean the hair debris.

[0062] In some embodiments,

[0063] The distribution member includes a rotating cam 43 , and a rotating surface of the cam 43 is arranged parallel to a flow direction inside the distribution chamber 42 .

[0064] The distribution component can adopt a rotating cam 43, and the rotation of the cam 43 can change the internal flow area of ​​the distribution chamber 42, including the arrangement mode in which the rotating surface of the cam 43 is parallel to the flow direction of the water flow; Figure 4-Figure 6 In the three states of the cam 43 shown in the figure, in the stable water injection state, the kinetic energy of the water flow entering the distribution chamber 42 is equal, so the relationship between the change of the water outlet pressure and the flow area is: P=F / A, where P is the pressure, F is the force, and A is the flow area; when F is basically stable, the water outlet pressure is inversely proportional to the flow area, such as Figure 7 shown.

[0065] Therefore, when the distribution member is a rotating cam 43, the projection area of ​​the cam 43 in the water flow direction changes periodically with time, the flow cross-sectional area of ​​the water outlet changes periodically with the rotation of the cam 43, and the outlet pressure changes with the relative position of the rotating member. The relationship between the flow cross-sectional area (A) and the rotation of the cam 43 is: A=π*r 2 -A 凸轮投影面积 , r is the diameter of the circular distribution chamber 42.

[0066] In some embodiments,

[0067] The driving member includes a motor 45 , and the motor 45 is disposed outside the distribution chamber 42 , and an output shaft thereof is passed through the distribution chamber 42 and connected to the cam 43 shaft.

[0068] When the cam 43 is used to change the flow area in the distribution chamber 42, a motor 45 can be set outside the distribution chamber 42 to connect the cam 43 to realize the rotation of the cam 43; in this way, by adjusting the start and stop of the motor 45 and the change of the speed, the flow area can be regulated to achieve a better spraying effect.

[0069] According to another aspect of the present application, a control method of the spray assembly as described above is provided, comprising:

[0070] The washer-dryer operates in a drying mode;

[0071] The water inlet pipe 41 injects water into the distribution chamber 42 , and at the same time changes the position of the distribution member in the distribution chamber 42 , thereby changing the flow area in the distribution chamber 42 .

[0072] The above-mentioned spray assembly can be used in the drying mode of the washer-dryer. At this time, water is injected into the distribution chamber 42 through the water inlet pipe 41, and the position of the distribution component in the distribution chamber 42 is changed, so that the flow area in the distribution chamber 42 changes, and the speed of the sprayed water changes, thereby changing the water outlet pressure or water outlet speed, thereby improving the effect of cleaning hair debris.

[0073] In some embodiments,

[0074] Detecting whether the washer-dryer has completed drying;

[0075] If completed, the water inlet pipe 41 is stopped from injecting water into the distribution chamber 42;

[0076] If it is not completed, the water inlet pipe 41 continues to inject water into the distribution chamber 42 .

[0077] The process of cleaning the filter 44 relies on the drying process of the washer-dryer. Cleaning is only performed during the drying process, and there is no need to inject water for spray cleaning after the drying process is completed.

[0078] A more specific operation process is that after the washer-dryer runs the drying program for a certain period of time, the dander spray flushing mode is started, and the spray valve at the inlet end of the water inlet pipe 41 is opened to let in water. During the time t1, the rotating cam 43 is at different rotation angles, and the pressure and flow rate of the second water outlet 422 are also different. The corresponding horizontal spray range and vertical spray intensity of the first water outlet 421 change with time, so it is possible to flush the dead corners of the filter 44 and flush the main dander accumulation area with different intensities, thereby improving the spraying effect. The flushed dander and other materials will be discharged from the return air outlet of the condensing air duct 2 through the drain pipe along with the water flow.

[0079] According to another aspect of the present application, a washer-dryer is provided, comprising the spray assembly as described above or a spray assembly operated according to the control method as described above.

[0080] The washer-dryer of the present application includes the above-mentioned spray assembly. In a more specific structure, the washer-dryer includes a drum 3, a condensing air duct 2, and a drying air duct 1. The inlet end of the condensing air duct 2 is connected to the drum 3, and the outlet end is connected to the drying air duct 1, and the outlet end of the drying air duct 1 is connected to the drum 3 to form a circulation loop; a filter 44 is provided at the connection between the condensing air duct 2 and the drying air duct 1 to prevent hair debris from returning to the drum 3 through the drying air duct 1; the above-mentioned loop structure is a conventional washer-dryer structure. The present application adds the above-mentioned spray assembly at the connection between the condensing air duct 2 and the drying air duct 1 to effectively spray the filter 44 located there, so as to achieve no hair debris residue and improve the performance and service life of the washer-dryer.

[0081] It is easy for those skilled in the art to understand that the above-mentioned implementation modes can be freely combined and superimposed without conflict.

[0082] The above is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A spray assembly, arranged at the connection point between a drying air duct (1) and a condensing air duct (2) of a washer-dryer, characterized in that: A filter screen (44) is provided between the drying air duct (1) and the condensing air duct (2); the spray assembly comprises: A water inlet pipe (41), the water inlet end of which is connected to a water source; a distribution chamber (42), wherein the water outlet end of the water inlet pipe (41) is connected to the distribution chamber (42); a movable distribution member is provided in the distribution chamber (42), wherein the distribution member comprises a rotating cam (43), wherein the rotating surface of the cam (43) is arranged parallel to the flow direction inside the distribution chamber (42), and the projection area of ​​the cam (43) in the water flow direction can change periodically with time; and the cam (43) is provided with at least two working positions in the distribution chamber (42), so that different flow areas exist inside the distribution chamber (42); At least two side walls of the distribution chamber (42) are respectively provided with water outlet holes so that water can be discharged in at least two directions; the distribution chamber (42) comprises a first side wall and a second side wall, the first side wall is arranged parallel to the filter screen (44), and the second side wall is arranged perpendicular to the filter screen (44); the first side wall and the second side wall are both provided with water outlet holes, the first water outlet hole (421) on the second side wall is inclined to spray toward the filter screen (44) and the surrounding area, and the second water outlet hole (422) on the first side wall is sprayed directly toward the filter screen (44).

2. The spray assembly according to claim 1, characterized in that: The spray assembly also includes a driving member, and the driving member is used to drive the distribution member to move.

3. The spray assembly according to claim 2, characterized in that: The driving member comprises a motor (45), wherein the motor (45) is arranged outside the distribution chamber (42), and an output shaft thereof is passed through the distribution chamber (42) and connected to the cam (43) shaft.

4. A method for controlling a spray assembly according to any one of claims 1 to 3, characterized in that: include: The washer-dryer operates in a drying mode; The water inlet pipe (41) injects water into the distribution chamber (42), and at the same time changes the position of the distribution member in the distribution chamber (42), thereby changing the flow area in the distribution chamber (42).

5. The control method according to claim 4, characterized in that: Detecting whether the washer-dryer has completed drying; If completed, the water inlet pipe (41) is stopped from injecting water into the distribution chamber (42); If it is not completed, the water inlet pipe (41) continues to inject water into the distribution chamber (42).

6. A washer-dryer, characterized in that: It comprises a spray assembly as described in any one of claims 1 to 3 or a spray assembly operated according to the control method as described in any one of claims 4 to 5.

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