Dispensing device for laundry treatment agents and washing machine

Abstract

The application belongs to the technical field of clothes processing equipment, and discloses a clothes processing agent feeding device and a washing machine, the feeding device comprising: a mixing tank, liquid inlets and liquid outlets are arranged on the mixing tank, clothes processing agent and water enter the inside of the mixing tank through the liquid inlets and are mixed; an auxiliary mixer is arranged in the inside of the mixing tank and has a certain liquid receiving capacity; the liquid entering through the liquid inlets impacts the liquid already received in the auxiliary mixer, the clothes processing agent and water in the liquid are mixed under the impact, and the mixed liquid overflows from the auxiliary mixer and is discharged from the liquid outlet of the mixing tank. In the application, the clothes processing agent and water enter the mixing tank and are received by the auxiliary mixer, the liquid entering subsequently can continuously impact the liquid already in the auxiliary mixer, the clothes processing agent and water are fully mixed, the fully mixed liquid overflows from the auxiliary mixer and is discharged from the mixing tank, the solubility of the clothes processing agent is improved, and the washing effect is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of clothes treatment equipment, in particular to a clothes treatment agent dispensing device and a washing machine. BACKGROUND

[0002] The washing machine in the prior art generally dispenses the clothes treatment agent such as detergent and softener along with the water flow in the water inlet process, and the clothes treatment agent is directly flushed into the inner drum of the washing machine by the water flow. This dispensing method is not conducive to the full mixing of the clothes treatment agent and the water flow, resulting in that the clothes treatment agent cannot be fully dissolved when being put into the inner drum and quickly deposited at the bottom in the inner drum. Especially in the initial stage of washing, the detergent is not fully dissolved in the water, and the initial washing is only to wash the clothes with water without the addition of detergent solution, which leads to poor washing effect. After a period of time after the start of washing, most of the detergent can be uniformly distributed in the water along with the rotation of the inner drum, so as to fully contact with the clothes to remove the stains on the clothes. In order to ensure the washing effect, it is necessary to prolong the washing time, which causes the prolongation of the overall washing time and leads to the increase of energy consumption, and also increases the degree of wear of the clothes.

[0003] On the other hand, since the clothes treatment agent is not fully mixed with the water flow before entering the inner drum, part of the clothes treatment agent solution with high concentration may be directly absorbed by the clothes in the inner drum, which is more unfavorable to the subsequent dissolution process of the clothes treatment agent. If the amount of clothes in the inner drum is large during the water inlet process, it may not be possible to wet all the clothes, and even part of the clothes may not be completely soaked after several minutes of starting washing, and thus cannot fully contact with the clothes treatment agent. The clothes treatment agent acts unevenly on the clothes in the drum, resulting in low utilization efficiency of the clothes treatment agent, which causes waste of the clothes treatment agent.

[0004] Therefore, the present application is proposed. SUMMARY

[0005] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art, and to provide a clothes treatment agent dispensing device and a washing machine. The dispensing device is provided with a mixing tank and an auxiliary mixer with a certain liquid receiving capacity in the mixing tank. The liquid entering the mixing tank can impact the liquid received by the auxiliary mixer, thereby realizing the full mixing of the clothes treatment agent and water. The application of the dispensing device in the washing machine helps to improve the washing efficiency of the clothes.

[0006] To solve the above technical problems, the basic idea of the technical solution of the present application is:

[0007] A clothes treatment agent dispensing device, comprising:

[0008] A mixing tank is provided with a liquid inlet and a liquid outlet, and the clothes treatment agent and water enter the inside of the mixing tank through the liquid inlet for mixing;

[0009] The auxiliary mixer is arranged inside the mixing tank and has a certain liquid receiving capacity;

[0010] The liquid entering through the liquid inlet impacts the liquid already received in the auxiliary mixer, the laundry treating agent in the liquid mixes with water under the impact and overflows from the auxiliary mixer, and the overflowing liquid is discharged through the liquid outlet of the mixing tank.

[0011] Further, the auxiliary mixer comprises a receiving portion arranged below the liquid inlet; the upper side surface of the receiving portion is concave downward to form an upper open mixing space; the liquid outlet of the mixing tank is lower than the upper opening of the mixing space;

[0012] The liquid entering the mixing tank is received in the mixing space, the laundry treating agent and water mixed therein under the impact of the subsequent liquid entering, and overflows through the upper opening of the mixing space and is discharged through the liquid outlet;

[0013] Preferably, the liquid inlet is arranged at the top of the mixing tank.

[0014] Further, the receiving portion is in a bowl shape with the middle lower than the periphery, and the liquid falls into the bowl-shaped structure through the liquid inlet and overflows from the bowl opening of the bowl-shaped structure;

[0015] Preferably, the downward projection of the liquid inlet covers the lowest position of the bowl-shaped structure.

[0016] Further, the bowl opening of the bowl-shaped structure has a certain spacing with the inner wall of the mixing tank, and the liquid overflowing from the bowl-shaped structure flows to the liquid outlet through the spacing.

[0017] Further, a limiting portion protruding outward is arranged at the bowl opening of the bowl-shaped structure, the limiting portion abuts against the inner wall of the mixing tank, and the limiting portion forms a spacing for the overflowing liquid to pass through along the two sides of the circumferential direction of the bowl opening;

[0018] Preferably, a plurality of limiting portions are arranged along the circumferential direction of the bowl opening, and a spacing for the overflowing liquid to pass through is formed between two adjacent limiting portions.

[0019] Further, a drain hole is arranged on the receiving portion to communicate the space on the upper side and the space on the lower side of the receiving portion;

[0020] Preferably, the drain hole is arranged at the lowest position of the receiving portion.

[0021] Further, the auxiliary mixer further comprises a supporting portion connected to the receiving portion, and the supporting portion is used to support the receiving portion at a certain height in the mixing tank;

[0022] Preferably, a plurality of mounting portions are arranged on the inner wall of the mixing tank, and the supporting portion comprises a plurality of supporting rods, upper ends of the supporting rods being connected with the receiving portion, and lower ends of the supporting rods being abutted against upper surfaces of the mounting portions.

[0023] Further, the laundry treating agent adding unit is further provided, which comprises a water inlet for water, and a liquid outlet communicated with the liquid inlet of the mixing tank; the laundry treating agent adding unit is used for adding the laundry treating agent into the water, and sending the laundry treating agent and the water to the liquid inlet of the mixing tank through the liquid outlet.

[0024] Further, the spray head communicated with the liquid outlet of the mixing tank is further provided, and the mixed liquid in the mixing tank is sprayed through the spray head.

[0025] Another object of the present application is to provide a washing machine comprising the laundry treating agent adding device.

[0026] Compared with the prior art, the present application has the following beneficial effects.

[0027] In the present application, the auxiliary mixer with a certain liquid receiving capacity is arranged in the mixing tank, the laundry treating agent and the water enter the mixing tank and are received by the auxiliary mixer, and the subsequent liquid can impact the liquid received by the auxiliary mixer, so that the laundry treating agent and the water in the liquid are fully mixed and uniformly distributed under the impact, and then overflow from the auxiliary mixer to be discharged from the mixing tank, so that the laundry treating agent or the water alone cannot overflow from the auxiliary mixer. After the laundry treating agent and the water are fully mixed in the mixing tank, the laundry treating agent is added into the washing machine, which is beneficial to improve the washing effect of the washing machine and shorten the washing time to reduce energy consumption.

[0028] In the present application, the receiving portion is in a bowl shape, which is used for receiving the liquid entering the mixing tank and making the fully mixed liquid overflow from the bowl opening, so as to ensure the liquid receiving capacity of the receiving portion and improve the mixing effect of the laundry treating agent and the water. The limiting portion is arranged on the outer periphery of the bowl opening, so as to ensure that the bowl opening and the inner wall of the mixing tank are kept apart to allow the liquid to pass through. The drain hole is arranged at the bottom of the receiving portion, which can prevent the liquid from remaining in the receiving portion.

[0029] In the present application, the liquid outlet of the mixing tank is communicated with the spray head for spraying the mixed liquid, which can further improve the mixing effect of the laundry treating agent and the water through the spraying effect, and can also increase the coverage area of the laundry treating agent solution when the laundry treating agent is added into the washing machine, so as to improve the contact area between the laundry treating agent and the laundry in the drum and further improve the washing effect.

[0030] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0031] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the application and together with the description, serve to explain the application. Obviously, the drawings described below only show some embodiments, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings. In the drawings:

[0032] Figure 1 is a schematic view of a clothes treatment agent dispensing device in an embodiment of the application;

[0033] Figure 2 is a schematic view of a mixing unit in an embodiment of the application;

[0034] Figure 3 is a schematic view of the internal structure of a mixing unit in an embodiment of the application;

[0035] Figure 4 is a schematic view of the flow of liquid in a mixing tank in an embodiment of the application;

[0036] Figure 5 is a schematic view of the perspective structure of a mixing unit from a top view in an embodiment of the application;

[0037] Figure 6 is a schematic view of the structure of an auxiliary mixer in an embodiment of the application;

[0038] Figure 7 is a schematic view of the nozzle of a spray head in an embodiment of the application;

[0039] Figure 8 is a schematic view of the structure of a washing machine in an embodiment of the application;

[0040] Figure 9 is a flow chart of a control method for a washing machine in an embodiment of the application.

[0041] In the drawings: 100, mixing tank; 101, liquid inlet; 102, liquid outlet; 103, mounting portion; 110, upper housing; 120, lower housing; 200, auxiliary mixer; 210, receiving portion; 211, limiting portion; 212, flow relief hole; 220, support rod; 300, adding unit; 310, water inlet; 320, liquid outlet; 410, spray pipe; 420, spray head; 510, inner drum; 511, inner drum shaft; 520, outer drum; 531, water inlet valve; 532, water inlet pipe; 541, drive motor; 542, transmission belt.

[0042] It should be noted that these drawings and written descriptions are not intended to limit the scope of the concept of the application in any way, but to illustrate the concept of the application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0043] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments with reference to the drawings in the embodiments of the present application. The following embodiments are used to explain the present application but not to limit the scope of the present application.

[0044] In the description of the present application, it should be noted that the terms "upper", "lower", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0045] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] Embodiment one

[0047] The present embodiment provides a laundry treatment agent dispensing device and a washing machine comprising the same. The laundry treatment agent includes but is not limited to detergent, softener, disinfectant, etc.

[0048] As shown in Figures 1 to 7 The dispensing device of the present embodiment comprises an adding unit 300, a mixing unit and a spraying unit connected in sequence.

[0049] The adding unit 300 comprises a water inlet 310 for water inlet, and further comprises a liquid outlet 320. The adding unit 300 is connected with a liquid storage cavity for storing laundry treatment agent. The external water source enters the adding unit 300 from the water inlet 310, the adding unit 300 adds laundry treatment agent to the water flow, and then sends the water flow containing laundry treatment agent out through the liquid outlet 320.

[0050] The mixing unit comprises a mixing tank 100, and the mixing tank 100 is provided with a liquid inlet 101 and a liquid outlet 102. The liquid inlet 101 is in communication with the liquid outlet 320 of the adding unit 300, and the laundry treatment agent and water flowing out of the liquid outlet 320 enter the mixing tank 100 through the liquid inlet 101 and are mixed in the mixing tank 100. The fully mixed liquid is discharged through the liquid outlet 102 of the mixing tank 100.

[0051] The spraying unit comprises a spraying pipe 410 connected to the liquid outlet 102 of the mixing tank 100, and a spraying head 420 arranged at the outlet end of the spraying pipe 410. The liquid obtained by sufficient mixing in the mixing tank 100 is sprayed out through the spraying head 420, so that the laundry treatment agent can have a larger coverage area.

[0052] As shown in Figure 8 , the washing machine of the embodiment comprises an inner drum 510 and an outer drum 520 coaxially arranged, and the spraying head 420 is arranged at the drum opening of the inner drum 510 to spray the liquid obtained by sufficient mixing of the laundry treatment agent and water into the inner drum 510. As shown in Figure 7 , the spraying port of the spraying head 420 has a shape with a larger width at the upper end than at the lower end, so that the spraying distance of the liquid sprayed out through the spraying head 420 can be increased, especially the difference in the spraying distance of the liquid at the upper and lower ends of the spraying head 420 can be increased, which is beneficial to increase the spraying coverage area, so that the load in the drum can be fully contacted with the laundry treatment agent, and the washing effect can be improved.

[0053] The washing machine further comprises a water inlet valve 531 connected to the adding unit 300 through a water inlet pipe 532. When the water inlet valve 531 is opened, the external water source enters the adding unit 300 through the water inlet valve 531 and the water inlet pipe 532, the adding unit 300 adds the laundry treatment agent to the water, and the water is fully mixed in the mixing tank 100 and finally sprayed out from the spraying head 420 through the spraying pipe 410, so that the laundry treatment agent is put into the inner drum 510.

[0054] The water inlet of the washing machine can also pass through the water inlet valve 531 and the water inlet pipe 532 and finally be sprayed into the inner drum 510 by the spraying head 420. Alternatively, a water inlet pipeline can be separately arranged to directly connect the water inlet valve 531 with the inner drum 510 or the outer drum 520, so as to realize the water inlet function of the washing machine.

[0055] The washing machine of the embodiment further comprises a driving motor 541 for driving the rotation of the inner drum 510. Specifically, the bottom of the inner drum 510 is connected to an inner drum shaft 511 penetrating through the bottom of the outer drum 520, the driving motor 541 is arranged below the outer drum 520, and the output shaft of the driving motor 541 is drivingly connected to the inner drum shaft 511 through a transmission belt 542, so as to drive the inner drum 510.

[0056] It should be noted that the dispensing device described in the embodiment can also be applied to a direct-drive type drum washing machine.

[0057] As shown in Figures 2 to 6As shown, in further schemes of the present embodiments, to achieve sufficient mixing of the laundry treatment agent and water in the mixing tank 100, an auxiliary mixer 200 with a certain liquid receiving capacity is arranged inside the mixing tank 100. The liquid entering through the liquid inlet 101 impacts the liquid already received in the auxiliary mixer 200, and the laundry treatment agent and water in the liquid are mixed under the impact and overflow from the auxiliary mixer 200. The overflowed liquid is discharged through the liquid outlet 102 of the mixing tank 100. The flow path of the liquid entering and leaving the mixing tank 100 is specifically as shown by the arrows in Figure 4

[0058] Specifically, the auxiliary mixer 200 includes a receiving portion 210 arranged below the liquid inlet 101. The upper side surface of the receiving portion 210 is concave downward, forming a mixing space with an open upper side. The liquid outlet 102 of the mixing tank 100 is lower than the opening of the upper side of the mixing space. The liquid entering the mixing tank 100 is received in the mixing space, and the laundry treatment agent and water mixed therein under the impact of the subsequent liquid entering, and overflow through the opening of the upper side of the mixing space and are discharged through the liquid outlet 102.

[0059] In the above schemes, the laundry treatment agent and water enter the mixing tank 100 through the liquid inlet 101. In the initial stage, the entering liquid impacts the upper side surface of the receiving portion 210. Since the upper side surface of the receiving portion 210 is concave to form the mixing space, the entering liquid will not directly flow to the liquid outlet 102 by bypassing the receiving portion 210, but will be temporarily stored in the mixing space. Only when the liquid surface in the mixing space rises with the continuous entering of the subsequent liquid (which can be a mixed solution of the laundry treatment agent and water, or water without the laundry treatment agent), the liquid will overflow from the opening of the upper side of the mixing space, flow downward, and then be discharged from the mixing tank 100 through the liquid outlet 102. The liquid entering the mixing tank 100 falls onto the liquid surface in the mixing space, continuously impacting the liquid already in the mixing space, so that the laundry treatment agent and water therein are fully mixed before overflowing, ensuring that the overflowed liquid is not simply the laundry treatment agent or water.

[0060] By arranging the auxiliary mixer 200 with a certain liquid receiving capacity in the mixing tank 100, the auxiliary mixer 200 can receive a certain amount of liquid through the receiving portion 210, and achieve the purpose of fully mixing the laundry treatment agent and water by impacting the liquid in the receiving portion 210 with the subsequent entering liquid. In this way, the laundry treatment agent can be more fully mixed and dissolved before being discharged from the mixing tank 100, and the laundry treatment agent can be more fully contacted with the load at the initial stage of the washing / rinsing stage. Especially for the detergent put into the washing machine at the washing stage, the utilization efficiency of the detergent at the initial stage of washing can be effectively improved, thereby improving the washing ratio of the laundry, and also being conducive to shortening the washing time of the washing machine and achieving the effect of reducing energy consumption. ​

[0061] In the preferred scheme of the embodiment, the liquid inlet 101 is arranged at the top of the mixing tank 100. This arrangement can maximize the vertical distance between the liquid inlet 101 and the receiving part 210, thereby improving the impact force of the liquid on the receiving part 210 and achieving a more thorough mixing effect, under the condition that the shape and size of the mixing tank 100 are fixed.

[0062] The liquid outlet 102 is arranged at the bottom of the mixing tank 100, preferably at the lowest position of the mixing tank 100, so that the liquid overflowing from the upper side of the receiving part 210 can more easily flow to the liquid outlet 102 and be smoothly discharged from the mixing tank 100.

[0063] In a further scheme of the embodiment, the receiving part 210 has a bowl-shaped structure with a lower middle part than the surrounding part, and the liquid falls into the bowl-shaped structure through the liquid inlet 101 and overflows from the bowl opening of the bowl-shaped structure.

[0064] Preferably, the downward projection of the liquid inlet 101 covers the lowest position of the bowl-shaped structure, further increasing the falling distance of the liquid when it impacts on the receiving part 210 after entering through the liquid inlet 101, thereby ensuring the mixing effect.

[0065] The outer periphery of the bowl opening of the bowl-shaped structure of the receiving part 210 has a certain spacing with the inner wall of the mixing tank 100, and the liquid overflowing from the bowl-shaped structure flows to the liquid outlet 102 through the spacing.

[0066] Further, a limiting part 211 protruding outwardly is arranged at the bowl opening of the bowl-shaped structure of the receiving part 210, the limiting part 211 abuts against the inner wall of the mixing tank 100, and the limiting part 211 forms a spacing for the overflowing liquid to pass through along the two sides of the bowl opening in the circumferential direction.

[0067] By arranging the limiting part 211 at the bowl opening, the relative position of the receiving part 210 in the mixing tank 100 can be limited, ensuring that there is sufficient spacing for the overflowing liquid to flow downwardly around the outer periphery of the bowl opening of the receiving part 210, and ensuring that the overflowing liquid can flow smoothly to the lower side of the receiving part 210 after the mixing is completed, and be discharged from the mixing tank 100 through the liquid outlet 102.

[0068] Preferably, a plurality of limiting parts 211 are arranged along the circumferential direction of the bowl opening of the receiving part 210, and the spacing for the overflowing liquid to pass through is formed between adjacent two limiting parts 211.

[0069] In a specific scheme of the embodiment, four limiting parts 211 are arranged on the receiving part 210, and the four limiting parts 211 are uniformly distributed along the circumferential direction of the bowl opening. The upper bowl opening of the receiving part 210 is circular, and adjacent two limiting parts 211 have a deviation angle of 90°. The cross section of the mixing tank 100 perpendicular to the axial direction of the liquid inlet 101 is also circular, so that the receiving part 210 can be stably limited in the center of the mixing tank 100 by the four limiting parts 211.

[0070] In a further aspect of the embodiment, the receiving portion 210 is provided with a drainage hole 212 that communicates with the space above and below the receiving portion 210. The drainage hole 212 is preferably provided at the lowest position of the receiving portion 210.

[0071] In the above aspect, the diameter of the drainage hole 212 is much smaller than the diameter of the liquid inlet 101. During the process of continuously feeding liquid into the mixing tank 100 through the liquid inlet 101, the amount of liquid leaking out of the receiving portion 210 through the drainage hole 212 is negligible compared to the amount of liquid overflowing from the open end of the receiving portion 210, and thus has no significant impact on the mixing effect of the laundry treatment agent and water. When the feeding of liquid into the mixing tank 100 is stopped, the liquid level in the receiving portion 210 no longer rises, and the residual liquid in the receiving portion 210 can slowly drain out of the receiving portion 210 through the drainage hole 212, preventing the problem of residual laundry treatment agent and water in the receiving portion 210.

[0072] In the embodiment, the auxiliary mixer 200 further includes a support portion connected to the receiving portion 210, which is used to support the receiving portion 210 at a certain height in the mixing tank 100. The support portion supports the receiving portion 210 from below, ensuring that the auxiliary mixer 200 is stably fixed inside the mixing tank 100, and in particular preventing the receiving portion 210 from moving downward under the impact of the mixed solution or even being overturned, which affects the mixing effect of the laundry treatment agent and water.

[0073] Further, a plurality of protruding mounting portions 103 are provided on the inner wall of the mixing tank 100, and the support portion includes a plurality of support rods 220. The upper ends of the support rods 220 are connected to the receiving portion 210, and the lower ends of the support rods 220 abut against the upper surfaces of the mounting portions 103.

[0074] Specifically, three mounting portions 103 are uniformly provided on the inner wall of the mixing tank 100 in the embodiment. Three support rods 220 are correspondingly provided, and the upper ends of the support rods 220 are connected to the outer surface of the bottom region of the receiving portion 210 and extend downward in a direction gradually approaching the inner wall of the mixing tank 100 until the lower ends are supported on the mounting portions 103, which is more stable in structure.

[0075] In the embodiment, the mixing tank 100 is assembled from an upper shell 110 and a lower shell 120 provided in separate parts. The liquid inlet 101 is provided at the top of the upper shell 110, and the liquid outlet 102 is provided at the bottom of the lower shell 120. The mounting portions 103 are provided on the inner wall of the lower shell 120, and the auxiliary mixer 200 is placed inside the lower shell 120 and supported above the mounting portions 103 by the support rods 220. Then, the upper shell 110 and the lower shell 120 are fastened together, and the limiting portion 211 on the outer periphery of the open upper end of the receiving portion 210 abuts against the inner wall of the upper shell 110, thereby stably fixing the auxiliary mixer 200 inside the mixing tank 100.

[0076] The mixing tank 100 is centrally symmetrical about the vertical direction, the axes of the liquid inlet 101 and the liquid outlet 102 coincide with the symmetry axis of the mixing tank 100, and the receiving part 210 of the auxiliary mixer 200 is also centrally symmetrical about the symmetry axis, and the flow hole 212 on the receiving part 210 is located on the symmetry axis.

[0077] The mixing tank 100 of the embodiment is in the shape of an ellipsoid. It can be understood that the mixing tank can be provided in other shapes, such as a sphere, a square, etc., and the auxiliary mixer can be correspondingly adjusted in shape to achieve the same effect.

[0078] The embodiment provides a mixing tank 100 for mixing laundry treatment agent and water in a laundry treatment agent dispensing device, and an auxiliary mixer 200 with a certain liquid receiving capacity is arranged inside the mixing tank 100. The liquid entering the mixing tank 100 is received in the receiving part 210 of the auxiliary mixer 200, and the liquid in the receiving part 210 is impacted by the subsequent liquid entering, thereby achieving sufficient mixing of the laundry treatment agent and water. The dispensing device further comprises a spraying unit provided with a spray head 420, and the laundry treatment agent solution obtained after sufficient mixing is sprayed out of the spray head 420. On the one hand, the solution can be further improved in mixing uniformity under the action of pressure when being sprayed out, and on the other hand, the coverage area of the laundry treatment agent solution when falling into the inner drum 510 of the washing machine can be increased, so that the laundry treatment agent can fully contact the load in the drum, which is beneficial to improving the washing effect.

[0079] Embodiment Two

[0080] The embodiment provides a control method of the washing machine described in Embodiment One above, which is used for the dispensing process of the laundry treatment agent.

[0081] As shown in Figure 9 , the control method comprises the following steps:

[0082] S1, controlling the inner drum to rotate at a first set speed, so that the load in the drum adheres to the inner wall of the inner drum under the action of centrifugal force;

[0083] S2, adding the laundry treatment agent to the water flow of the washing machine, mixing through the mixing unit, and dispensing the laundry treatment agent solution mixed to the surface of the load adhered to the inner wall of the inner drum.

[0084] Specifically, as shown in Figure 1 and Figure 8 , after the washing machine receives an instruction to start a washing program, the dispensing of the laundry treatment agent is started according to the above control method.

[0085] In step S1, the computer board of the washing machine controls the driving motor 541 to start and drive the inner drum 510 to rotate at a first set speed. The first set speed is relatively high, for example, 90-100 rpm, so that the load in the inner drum 510 is spread nearly uniformly on the inner side of the sidewall of the inner drum 510 under the action of centrifugal force, thereby increasing the surface area of the load and facilitating the water flow to quickly wet the load when entering the inner drum 510.

[0086] In step S2, the water inlet valve 531 is controlled to open, and the water flow flows to the adding unit 300 through the water inlet valve 531 and the water inlet pipe 532. The water flow passes through the adding unit 300, and the adding unit 300 adds the laundry treatment agent to the water flow, and the water flow carrying the laundry treatment agent enters the mixing tank 100 to obtain a mixed and uniform laundry treatment agent solution after sufficient mixing. The laundry treatment agent solution flows through the spray pipe 410 and is finally sprayed into the inner drum 510 by the spray head 420 to form a certain area of coverage in the inner drum 510, thereby achieving the effect of directly spraying the laundry treatment agent solution on the surface of the load. At the same time, the load in the drum continuously passes through the coverage area with the rotation of the inner drum 510, thereby achieving the effect of uniformly contacting the laundry treatment agent solution and being wetted.

[0087] Steps S1 and S2 can be simultaneously started and executed, that is, after the washing machine receives the instruction to start the washing program, the driving motor 541 is controlled to start, and the water inlet valve 531 is opened at the same time.

[0088] The spray head 420 has a spray opening as shown in Figure 7 The laundry treatment agent solution is sprayed from the drum opening of the inner drum 510 into the drum to form a strip-shaped coverage area on the drum wall of the inner drum 510, which is nearly parallel to the axis of the inner drum 510. The strip-shaped coverage area extends from the drum opening to the drum bottom, so that the load attached to the inner side of the drum wall of the inner drum 510 can be directly contacted with the sprayed laundry treatment agent solution during the rotation of the inner drum 510.

[0089] The farthest end of the laundry treatment agent solution spray can be sprayed on the drum bottom of the inner drum 510, thereby forming a certain size of coverage area on the drum bottom of the inner drum 510, so that the load attached to the drum bottom of the inner drum 510 can also be wetted by the laundry treatment agent solution.

[0090] The nozzle structure of the spray head 420 is designed to match the size of the inner drum 510, so that the coverage area of the laundry treatment agent solution on the bottom of the inner drum 510 extends at least from the outer periphery of the bottom to the center of the bottom, for example, forming a strip-shaped coverage area on the bottom of the inner drum 510 extending from the lowest position of the bottom to the center of the bottom. In this way, during the rotation of the inner drum 510, the entire bottom of the inner drum 510 can pass through the coverage area of the laundry treatment agent solution, thereby ensuring that the load in the drum can be fully contacted by the laundry treatment agent, and achieving uniform spraying of the laundry treatment agent solution on the surface of the load.

[0091] It should be noted that the installation position of the spray head can also be changed, for example, installed at any position around the drum opening, and the direction and structure of the spray head are adjusted correspondingly, as long as the sprayed laundry treatment agent solution can cover the entire range from the drum opening to the bottom, and cover a certain area extending from the outer periphery to the center of the bottom. Combined with the above dispensing control method, the same effect of uniformly spraying the laundry treatment agent solution to the surface of the load can be achieved.

[0092] In a further scheme of the embodiment, after step S2, there is further a step S3: the washing machine continues to water, stops adding the laundry treatment agent, and the inner drum keeps rotating at the first set speed.

[0093] When the amount of the laundry treatment agent added in step S2 reaches a certain amount, the adding unit 300 stops adding the laundry treatment agent, and at the same time, the water inlet valve 531 remains open, and continues to spray water into the inner drum 510 through the water inlet pipe 532, the adding unit 300, the mixing tank 100, the spray pipe 410 and the spray head 420. On the one hand, the laundry treatment agent remaining in the mixing tank 100 can be brought out, ensuring that the laundry treatment agent added in step S2 fully enters the inner drum 510. On the other hand, the total amount of liquid sprayed into the inner drum 510 in step S2 is limited, and when the load in the drum is large, the side of the load close to the inner wall of the inner drum 510 can not be wetted. Continuing to spray water into the inner drum 510 can further increase the water content of the load, so that the load in the drum is fully soaked before starting the washing / rinsing process.

[0094] In the embodiment, after step S3, there is further a step S4: stopping water, controlling the rotation speed of the inner drum to reduce to a second set speed and keeping rotating.

[0095] In step S4, the water inlet valve 531 is closed, and the output speed of the driving motor 541 is controlled to reduce, driving the inner drum 510 to rotate at a second set speed. The second set speed can be 30-40 rpm, and the centrifugal force acting on the load is greatly reduced, so that the load is no longer attached to the inner wall of the inner drum 510, but is lifted to a certain height and then falls down with the rotation of the inner drum 510, so that the load in the drum is turned over in the inner drum 510 with the rotation of the inner drum 510.

[0096] In this stage, the inner drum 510 is rotated at a low speed to flip the load in the drum, which has a similar effect to hand washing and rubbing, so that the load can form a stirring action on the laundry treatment agent solution in the drum, and the laundry treatment agent solution that has been added can be more evenly attached to the load.

[0097] In one embodiment of the present embodiment, step S3 is executed for a first preset time period, and step S4 is executed. The washing machine can automatically determine the value of the first preset time period according to the load in the drum, to ensure that the load in the drum can be sufficiently wetted.

[0098] In another embodiment of the present embodiment, the washing machine is provided with a flow sensor for detecting the amount of water entering the inner drum 510 through the water inlet pipe 532. The washing machine executes step S4 when the detected continuous water inlet amount during the execution of step S3 reaches a preset water inlet amount. The specific value of the preset water inlet amount can be automatically determined by the washing machine according to the load in the drum, to ensure that the load in the drum is sufficiently wetted.

[0099] In a further scheme of the present embodiment, step S4 is executed for a second preset time period, and returns to step S1.

[0100] Specifically, step S4 is executed for a second preset time period, and the washing machine determines whether the execution number n of step S2 reaches a preset number N. If yes, the dispensing process is ended, otherwise, it returns to step S1.

[0101] In the above scheme, the washing machine dispenses the laundry treatment agent into the inner drum 510 multiple times to complete the dispensing process of the laundry treatment agent. After a certain amount of laundry treatment agent is added each time, a certain amount of water is added to the inner drum 510, and then the added laundry treatment agent solution is mixed with the load by reducing the rotation speed of the inner drum 510. Since the amount of laundry treatment agent added each time is relatively small, compared with the method of adding a large amount of laundry treatment agent at one time, it is more conducive to the uniform and sufficient contact between the load in the drum and the laundry treatment agent, thereby further improving the washing effect.

[0102] In a specific scheme of the present embodiment, before the first execution of step S1, step S0 is further included: determining the total amount X of the laundry treatment agent according to the load information in the drum and / or the washing program information, and calculating the preset number N according to the single dispensing amount X0 of the laundry treatment agent in step S2 and the total amount X of the laundry treatment agent.

[0103] Further, the washing machine determines the value of the single dispensing amount X0 according to the load information in the drum and / or the washing program information.

[0104] The load information in the drum includes, but is not limited to, load amount, color information, material information, and dirtiness level. The load information in the drum can be determined by receiving a user's setting operation information, or a recognition device can be provided on the washing machine to recognize the load in the drum to obtain the relevant information.

[0105] The washing program information includes at least program type and / or program parameters. The washing program information can be determined by receiving a user's setting operation for the washing program, or a washing program can be automatically generated according to the obtained load information in the drum, and then the washing program information is determined.

[0106] In another aspect of the embodiment, the washing machine does not preset the total amount of the laundry treatment agent before starting the dispensing, but detects the relevant parameters during the dispensing process to determine whether to continue the dispensing process.

[0107] Specifically, step S4 is continuously executed for a second preset time length, the washing machine detects the turbidity value of the water in the drum, and if the detected turbidity value reaches a preset turbidity value, the dispensing process is ended, otherwise, it returns to step S1.

[0108] The above scheme is mainly applicable to the dispensing process of the detergent. As the amount of the detergent being put into the drum 510 increases, the turbidity value of the water in the drum gradually decreases. When it is detected that the current turbidity value of the water in the drum decreases to a preset turbidity value or lower, it indicates that the current total amount of the detergent and the load amount and the dirtiness level of the load in the drum can be well adapted. At this time, the dispensing process is ended, the washing machine continues to fill water to the set washing water level for washing, and a washing ratio that meets the user's demand can be obtained, while avoiding the waste caused by excessive dispensing of the detergent, or the situation that detergent residues exist after the completion of the washing of the load due to insufficient removal of the detergent in the rinsing process.

[0109] The control method of the washing machine in the embodiment can make the laundry treatment agent solution that is uniformly mixed with water uniformly sprayed on the surface of the load in the drum, so that the laundry treatment agent and the load in the drum are more uniformly contacted, thereby further improving the washing effect.

[0110] The above only describes the preferred embodiments of the present application and does not limit the present application in any form. Although the present application has been disclosed as above with the preferred embodiments, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above-mentioned technical content without departing from the scope of the technical solution of the present application, and any simple modification, equivalent change and modification of the above embodiments made according to the technical essence of the present application are still within the scope of the present application.

Claims

1. A laundry machine comprising a dispensing device for laundry treatment agents, characterized in that, The feeding device comprises: a mixing tank, on which a liquid inlet and a liquid outlet are arranged, and in which a laundry treatment agent and water are mixed; an auxiliary mixer arranged in the mixing tank and having a certain liquid receiving capacity; an adding unit having a water inlet for water and a liquid outlet communicating with the liquid inlet of the mixing tank; the adding unit adds the laundry treatment agent to the water, and sends the laundry treatment agent and water to the liquid inlet of the mixing tank through the liquid outlet; the liquid containing the laundry treatment agent and water entering through the liquid inlet impacts the liquid already received in the auxiliary mixer, the laundry treatment agent and water in the liquid are mixed under the impact, and the mixed liquid overflows from the auxiliary mixer and is discharged from the liquid outlet of the mixing tank; the laundry treatment agent feeding process of the washing machine comprises: controlling the inner tub of the washing machine to rotate at a first set speed, so that the load in the tub adheres to the inner wall of the inner tub under the action of centrifugal force; the water flow passes through the adding unit, the adding unit adds the laundry treatment agent to the water flow, the water flow carrying the laundry treatment agent enters the mixing tank for mixing, and the uniformly mixed laundry treatment agent solution is fed to the surface of the load adhering to the inner wall of the inner tub; the washing machine continues to feed water, the adding unit stops adding the laundry treatment agent, and the inner tub continues to rotate at the first set speed; stop feeding water, and reduce the speed of the inner tub to a second set speed and continue to rotate, the load in the tub is turned over in the inner tub with the rotation of the inner tub, and the rotation continues for a second preset time, and returns to the step of controlling the inner tub to rotate at the first set speed.

2. A laundry washing machine according to Claim 1, characterized in that The auxiliary mixer comprises a receiving portion arranged below the liquid inlet; the upper side surface of the receiving portion is recessed downward to form an upper side open mixing space; and the liquid outlet of the mixing tank is lower than the upper side opening of the mixing space. The liquid entering the mixing tank is received in the mixing space, the laundry treatment agent and water mixed therein are mixed under the impact of the subsequent liquid entering, and overflow through the upper side opening of the mixing space and are discharged through the liquid outlet.

3. A laundry washing machine according to Claim 2, characterized in that The liquid inlet is arranged at the top of the mixing tank.

4. A laundry washing machine according to Claim 2, characterized in that The receiving portion is in a bowl-shaped structure with a middle lower than the periphery, and the liquid falls into the bowl-shaped structure through the liquid inlet and overflows from the bowl opening of the bowl-shaped structure.

5. A laundry washing machine according to Claim 4, characterized in that The downward projection of the liquid inlet covers the lowest position of the bowl-shaped structure.

6. A laundry washing machine according to Claim 4, characterized in that The bowl opening of the bowl-shaped structure has a certain spacing with the inner wall of the mixing tank, and the liquid overflowing from the bowl-shaped structure flows to the liquid outlet through the spacing.

7. A laundry washing machine according to Claim 6, characterized in that The bowl opening of the bowl-shaped structure is provided with a limiting portion protruding outward, the limiting portion abuts against the inner wall of the mixing tank, and the limiting portion forms a spacing for the overflowing liquid to pass through along the two sides of the circumferential direction of the bowl opening.

8. A laundry washing machine according to Claim 7, characterized in that A plurality of limiting portions are arranged along the circumferential direction of the bowl opening, and a spacing for the overflowing liquid to pass through is formed between adjacent two limiting portions.

9. A laundry washing machine according to Claim 2, characterized in that A drain hole is arranged on the receiving portion to communicate the space on the upper side and the lower side of the receiving portion.

10. A laundry washing machine according to Claim 9, characterized in that The drain hole is arranged at the lowest position of the receiving portion.

11. A laundry washing machine according to any one of the preceding claims 2-10, characterized in that, The auxiliary mixer further comprises a supporting portion connected to the receiving portion, and the supporting portion is used to support the receiving portion at a certain height in the mixing tank.

12. A laundry washing machine according to Claim 11, characterized in that The inner wall of the mixing tank is provided with a plurality of protruding mounting portions, and the supporting portion comprises a plurality of supporting rods, the upper end of the supporting rod is connected with the receiving portion, and the lower end of the supporting rod abuts against the upper surface of the mounting portion.

13. A laundry washing machine according to any one of the preceding claims 1-10, characterized in that, The feeding device further comprises a spray head in communication with the liquid outlet of the mixing tank, and the mixed liquid in the mixing tank is sprayed out through the spray head to the inner cylinder.

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