Detergent dispensing mechanism and dishwasher

Abstract

The present invention provides a detergent dispensing mechanism and a dishwasher, relating to the technical field of household appliances. The detergent dispensing mechanism provided by the present invention includes: a detergent box, an upper cover, and a covering plate. The detergent box has a detergent storage chamber. The upper cover is movably connected to the detergent box to cover or open the detergent storage chamber. The detergent box is provided with a liquid inlet, a liquid outlet, and a distribution hole provided at the bottom of the detergent storage chamber. The covering plate is attached to the liquid outlet and can cover the distribution hole. Liquid enters the detergent storage chamber through the liquid inlet, and the liquid in the detergent storage chamber drives the covering plate to move to open the distribution hole after flowing through the liquid outlet. The detergent dispensing mechanism provided by the present invention alleviates the technical problem of easy generation of detergent residue in the detergent storage chamber in the related art.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and more particularly to a detergent dispensing mechanism and a dishwasher. Background Art

[0002] The washing process of a dishwasher generally includes four stages: pre-washing, main washing, rinsing, and drying. During the main washing stage, detergent needs to be dispensed. As Figure 1 and Figure 2 shown, in the prior art, the dispenser 1 of the dishwasher is installed on the door liner 2. After the user adds detergent to the chamber 3 for placing detergent on the dispenser 1, the detergent chamber lid 4 is manually closed. As Figure 3 shown, when the dishwasher runs to the main washing stage, the electromagnetic valve and the linkage mechanism provided on the dispenser 1 act, the detergent chamber lid 4 opens, and the water ejected from the spray holes 6 on the upper spray arm 5 flushes the chamber 3 to achieve detergent dispensing. However, due to the randomness of the flushing by the spray head 5, detergent residues are easily formed in the chamber 3, resulting in a decrease in the washing effect. At the same time, the operating mechanism of the detergent chamber lid 4 is very complex, and high requirements are imposed on the machining and assembly accuracy of the parts. Summary of the Invention

[0003] The purpose of the first aspect of the present invention is to provide a detergent dispensing mechanism to alleviate the technical problem of easy generation of detergent residues in the detergent chamber in the related art.

[0004] The detergent dispensing mechanism provided by the present invention includes: a detergent box, an upper cover, and a shielding cover plate. The detergent box has a detergent chamber. The upper cover is movably connected to the detergent box to cover or open the detergent chamber.

[0005] The detergent box is provided with a liquid inlet, a liquid outlet, and a distribution hole provided at the bottom of the detergent chamber. The shielding cover plate is attached to the liquid outlet and can cover the distribution hole. Liquid enters the detergent chamber through the liquid inlet, and the liquid in the detergent chamber flows through the liquid outlet and then drives the shielding cover plate to move to open the distribution hole.

[0006] Further, the shielding cover plate includes a lower cover and a side plate connected to each other. The lower cover is disposed opposite to the distribution hole and is slidably connected to the detergent box. The side plate is disposed opposite to the liquid outlet.

[0007] Further, a lower slider is provided on the outer wall of the detergent box, and a lower sliding groove that slidably cooperates with the lower slider is provided on the lower cover.

[0008] Further, the lower cover is provided with a liquid discharge hole. When the side plate is attached to the detergent box, the distribution hole is offset from the liquid discharge hole. The liquid flowing out through the liquid outlet drives the side plate to drive the lower cover to slide, so that the liquid discharge hole is opposite to the distribution hole.

[0009] Further, a first limiting structure is provided on the outer wall of the detergent box, and a second limiting structure is provided on the lower cover. When the distribution hole is opposite to the liquid discharge hole, the first limiting structure abuts against the second limiting structure.

[0010] Further, the detergent dispensing mechanism further includes an elastic member. One end of the elastic member is connected to the detergent box, and the other end is connected to the cover plate. The elastic member is used to make the cover plate have a tendency to block the distribution hole.

[0011] Further, the upper cover is slidably connected to the detergent box.

[0012] Further, the detergent box is provided with an upper chute, and the upper cover is provided with an upper slider that is slidably engaged with the upper chute.

[0013] Further, the liquid inlet is provided at the lower end of the side wall of the detergent box.

[0014] Further, a one-way valve is provided at the liquid inlet, and the one-way valve is used to prevent the liquid in the detergent box from flowing out through the liquid inlet.

[0015] Further, the liquid outlet is provided at the upper end of the side wall of the detergent box, and the side wall provided with the liquid inlet is opposite to the side wall provided with the liquid outlet.

[0016] An object of the second aspect of the present invention is to provide a dishwasher to alleviate the technical problem of easy detergent residue in the detergent bin of the dishwasher in the related art.

[0017] The dishwasher provided by the present invention includes: an inner tank, an upper rack, and the above-mentioned detergent dispensing mechanism. The detergent box in the detergent dispensing mechanism is detachably connected to the upper rack. When the upper rack is pushed into the inner tank, the liquid inlet of the detergent dispensing mechanism is in communication with the detergent water path of the inner water pipe provided on the inner tank.

[0018] Further, the upper rack is provided with a limiting member, and the limiting member is opposite to the cover plate in the detergent dispensing mechanism. When the distribution hole is opened, the cover plate abuts against the limiting member.

[0019] Before washing, the baffle plate blocks the distribution holes. The user can open the detergent bin by moving the upper cover to add detergent into the detergent bin, and then close the detergent bin. External water flows into the detergent bin through the liquid inlet, and the water in the detergent bin can flow out from the liquid outlet. The upper cover prevents water from flowing out of the upper end of the detergent bin, so that the water flowing out of the liquid outlet has a certain impact force. The water flowing out of the liquid outlet pushes the baffle plate to move, so that the baffle plate opens the distribution holes. The mixed detergent solution flows out along the distribution holes under the dual action of gravity and water flow, realizing detergent dispensing and avoiding residual detergent in the detergent bin. In addition, by using the water flow impact force generated by the water that must be used during washing to drive the baffle plate to move, no additional driving structure is required, the structure is simple and reliable, the use of parts is reduced, and thus the requirements for part processing and assembly accuracy are lowered. Description of the Drawings

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the related art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 is a schematic structural diagram of a dishwasher in the prior art;

[0022] Figure 2 is a partial structural schematic diagram of a dishwasher door liner in the prior art;

[0023] Figure 3 is a schematic working diagram of a dishwasher in the prior art;

[0024] Figure 4 is an exploded view of the detergent dispensing mechanism provided by an embodiment of the present invention;

[0025] Figure 5 is a first cross-sectional view of the detergent dispensing mechanism provided by an embodiment of the present invention;

[0026] Figure 6 is a second cross-sectional view of the detergent dispensing mechanism provided by an embodiment of the present invention;

[0027] Figure 7 is a schematic internal structure diagram of a dishwasher provided by an embodiment of the present invention;

[0028] Figure 8 is Figure 7 a partial enlarged view of part A in

[0029] Icons: 1 - dispenser; 2 - door lining; 3 - chamber; 4 - detergent bin cover; 5 - spray head; 6 - spray holes; 100 - detergent box; 110 - detergent bin; 120 - liquid inlet; 121 - check valve; 122 - water inlet pipe; 130 - liquid outlet; 140 - distribution holes; 150 - lower slider; 160 - upper chute; 170 - card slot; 200 - upper cover; 210 - upper slider; 003 - cover plate; 300 - lower cover; 310 - shielding part; 311 - liquid discharge hole; 320 - connecting part; 321 - lower chute; 400 - side plate; 500 - inner container; 510 - inner water pipe detergent waterway; 600 - upper shelf; 610 - limiting wire. Detailed implementation mode

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0033] Such as Figure 4As shown in the figure, the detergent dispensing mechanism provided by the embodiment of the present invention includes: a detergent box 100, an upper cover 200, and a shielding cover plate 003. The detergent box 100 has a detergent storage chamber 110. The upper cover 200 is movably connected to the detergent box 100 to cover or open the detergent storage chamber 110. The detergent box 100 is provided with a liquid inlet 120, a liquid outlet 130, and a distribution hole 140 provided at the bottom of the detergent storage chamber 110. The shielding cover plate 003 is attached to the liquid outlet 130 and can cover the distribution hole 140. Liquid enters the detergent storage chamber 110 through the liquid inlet 120, and the liquid in the detergent storage chamber 110 drives the shielding cover plate 003 to move to open the distribution hole 140 after flowing through the liquid outlet 130.

[0034] Specifically, the detergent box 100 is an open shell with a rectangular cross-section. The detergent box 100 has an open mouth, and the open mouth is communicated with the detergent storage chamber 110. The upper cover 200 is movably connected to the open mouth to close or open the detergent storage chamber 110. The liquid inlet 120 and the liquid outlet 130 are provided on two opposite side walls. The liquid inlet 120 is provided with a water inlet pipe 122 to facilitate the connection of the liquid inlet 120 with an external pipeline.

[0035] Before washing, the baffle plate shields the distribution hole 140. The user can open the detergent storage chamber 110 by moving the upper cover 200 to add detergent into the detergent storage chamber 110, and then close the detergent storage chamber 110. External water flows into the detergent storage chamber 110 through the liquid inlet 120. The water in the detergent storage chamber 110 can flow out from the liquid outlet 130. The upper cover 200 prevents the water from flowing out from the open mouth, so that the water flowing out from the liquid outlet 130 has a certain impact force. The water flowing out from the liquid outlet 130 pushes the shielding cover plate 003 to move, so that the shielding cover plate 003 opens the distribution hole 140. The mixed detergent solution flows out along the distribution hole 140 under the dual action of gravity and water flow, realizing detergent dispensing and avoiding the residue of detergent in the detergent storage chamber 110. In addition, by using the water flow impact force generated by the water that must be present during washing to drive the lower cover 300 to move, there is no need to additionally increase a driving structure. The structure is simple and reliable, reducing the use of parts, thereby reducing the requirements for the machining and assembly accuracy of parts.

[0036] Further, the shielding cover plate 003 includes a lower cover 300 and a side plate 400 connected to each other. The lower cover 300 is disposed opposite to the distribution hole 140 and is slidably connected to the detergent box 100. The side plate 400 is disposed opposite to the liquid outlet 130.

[0037] Specifically, the lower cover 300 is disposed opposite to the bottom wall of the detergent box 100 and is slidably connected to the outer wall of the detergent box 100. The side plate 400 is vertically connected to one end of the lower cover 300 and is disposed opposite to the side wall of the detergent box 100 where the liquid outlet 130 is provided. The liquid flowing out through the liquid outlet 130 pushes the side plate 400 to drive the lower cover 300 to slide, so that the lower cover 300 opens the distribution hole 140, and the mixed detergent solution in the detergent bin 110 flows out along the distribution hole 140 under the dual action of gravity and water flow, realizing the detergent dispensing.

[0038] Further, a lower slider 150 is provided on the outer wall of the detergent box 100, and a lower chute 321 that slidably cooperates with the lower slider 150 is provided on the lower cover 300.

[0039] The lower cover 300 includes an occlusion part 310 connected to each other and two connection parts 320 connected to the occlusion part 310. The occlusion part 310 is opposite to the bottom wall of the detergent box 100, and the two connection parts 320 are slidably connected to the two side walls of the detergent box 100 where the liquid inlet 120 or the liquid outlet 130 is not provided in a one-to-one correspondence. Specifically, lower sliders 150 are provided on the two side walls of the detergent box 100 where the liquid inlet 120 or the liquid outlet 130 is not provided, and the lower sliders 150 extend along the sliding direction of the lower cover 300. Lower chutes 321 that slidably cooperate with the corresponding lower sliders 150 are provided on the two connection parts 320. When the side plate 400 drives the lower cover 300 to slide, the cooperation between the lower slider 150 and the lower chute 321 plays a guiding role for the lower cover 300, improving the sliding stability of the lower cover 300 and avoiding jamming.

[0040] Further, the lower cover 300 is provided with a liquid discharge hole 311. When the side plate 400 is attached to the detergent box 100, the distribution hole 140 is staggered from the liquid discharge hole 311, and the liquid flowing out through the liquid outlet 130 drives the side plate 400 to drive the lower cover 300 to slide, so that the liquid discharge hole 311 is opposite to the distribution hole 140.

[0041] In some embodiments, the distribution hole 140 is provided on the bottom wall of the detergent box 100, and the liquid discharge hole 311 is provided on the lower cover 300. When the lower cover 300 slides relative to the detergent box 100, the distribution hole 140 and the liquid discharge hole 311 can be opposite or staggered.

[0042] Specifically, a plurality of distribution holes 140 are provided on the bottom wall of the detergent container. The shielding portion 310 is provided with liquid discharge holes 311 having the same number as the distribution holes 140, and the positions of the plurality of liquid discharge holes 311 correspond to the positions of the plurality of distribution holes 140. Specifically, the number of the distribution holes 140 and the number of the liquid discharge holes 311 can both be two, three, four, etc. In this embodiment, the number of the distribution holes 140 and the number of the liquid discharge holes 311 are both four. The four distribution holes 140 are located in the four corner regions, and the positions of the four liquid discharge holes 311 correspond to the positions of the four distribution holes 140, so as to enable the four distribution holes 140 to be in one-to-one correspondence and communication with the four liquid discharge holes 311. When the distribution holes 140 are provided on the bottom wall of the detergent bin 110 and water is added into the detergent bin 110, the distribution holes 140 and the liquid discharge holes 311 for the detergent solution to pass through are located below the detergent solution in the detergent bin 110, which is beneficial to the detergent solution flowing out through the overlapping part of the distribution holes 140 and the liquid discharge holes 311 under the action of its gravity, and avoids residual detergent in the detergent bin 110.

[0043] As another implementation manner, the distribution holes 140 are provided on the side wall of the detergent box 100 opposite to the connecting portion 320 and communicate with the bottom of the detergent bin 110. The liquid discharge holes 311 are provided on the connecting portion 320. When the lower cover 300 slides relative to the detergent box 100, the distribution holes 140 and the liquid discharge holes 311 can be made to be opposite or staggered.

[0044] Specifically, a plurality of rectangular distribution holes 140 are provided on the two side walls of the detergent box 100 where the liquid inlet 120 or the liquid outlet 130 is not provided. The plurality of distribution holes 140 are spaced apart along the sliding direction of the lower cover 300, and the bottom wall of each distribution hole 140 is flush with the bottom wall of the detergent bin 110. Each connecting portion 320 is provided with liquid discharge holes 311 having the same number as the distribution holes 140 on the corresponding side wall, and the positions of the plurality of liquid discharge holes 311 correspond to the positions of the plurality of distribution holes 140, so as to enable the plurality of distribution holes 140 to be in one-to-one correspondence and communication with the plurality of liquid discharge holes 311. When the water flow pushes the side plate 400 to drive the lower cover 300 to slide, the distribution holes 140 on the side wall coincide with the liquid discharge holes 311 on the connecting portion 320, and the detergent solution in the detergent bin 110 flows out from the overlapping part of the distribution holes 140 and the liquid discharge holes 311, realizing the detergent delivery and avoiding residual detergent in the detergent bin 110.

[0045] Further, a first limiting structure is provided on the outer wall of the detergent box 100, and a second limiting structure is provided on the lower cover 300. When the distribution holes 140 and the liquid discharge holes 311 are opposite, the first limiting structure abuts against the second limiting structure.

[0046] The first limiting structure and the second limiting structure both include limiting protrusions. Specifically, the first limiting structure is disposed on two outer walls of the detergent box 100 where no liquid inlet 120 or liquid outlet 130 is disposed, and is located at the end of the outer wall close to the liquid outlet 130. The second limiting structure is disposed at the connecting portion 320. Figure 4 The upper surface shown in the figure is located on the side of the first limiting portion away from the liquid outlet 130. When the side plate 400 is attached to the detergent box 100, the distance between the first limiting structure and the second limiting structure is equal to the distance between the distribution hole 140 and the liquid discharge hole 311. When the lower cover 300 slides to a position where the distribution hole 140 and the liquid discharge hole 311 overlap, the second limiting mechanism abuts against the first limiting structure to prevent the lower cover 300 from continuing to slide and causing the distribution hole 140 and the liquid discharge hole 311 to be staggered, thereby affecting the delivery of detergent.

[0047] Furthermore, the detergent dispensing mechanism also includes an elastic member, one end of which is connected to the detergent box 100 , and the other end of which is connected to the covering plate 003 . The elastic member is used to make the covering plate 003 have a movement tendency to cover the dispensing hole 140 .

[0048] The elastic member may include a rubber strip or a coil spring, etc. In this embodiment, the elastic member includes a coil spring, one end of which is connected to the outer wall of the detergent box 100, and the other end is connected to the lower cover 300 or the side plate 400. When the water flowing out of the liquid outlet 130 pushes the side wall and the lower cover 300 to move, the coil spring is stretched, and after the water is stopped from being added to the detergent bin 110, the lower cover 300 and the side plate 400 automatically return to their original positions under the action of the restoring force of the coil spring, so that the dispensing hole 140 and the liquid discharge hole 311 are staggered again, and there is no need to manually move the lower cover 300 or the side plate 400, which is convenient for adding detergent to the detergent bin 110 when it is used next time.

[0049] The upper cover 200 can be connected to the detergent box 100 by snapping or hinged connection. In this embodiment, the upper cover 200 is slidably connected to the detergent box 100. Specifically, the detergent box 100 is provided with an upper slide groove 160, and the upper cover 200 is provided with an upper slider 210 that slidably cooperates with the upper slide groove 160.

[0050] like Figure 4 As shown, upper slide grooves 160 are provided on both side walls of the lower slider 150 of the detergent box 100, and the extension direction of the upper slide grooves 160 is the same as the extension direction of the lower slider 150. Upper slide blocks 210 are provided on both side walls of the upper cover 200, and the two upper slide blocks 210 slide and cooperate with the two upper slide grooves 160 in a one-to-one correspondence. The user can pull the upper cover 200 to slide along the extension direction of the upper slide grooves 160 to open or close the detergent bin 110, which is convenient for operation. The upper slide block 210 cooperates with the upper slide grooves 160 to improve the stability of the upper cover 200 during the sliding process and prevent it from getting stuck.

[0051] As another implementation, an upper chute 160 can be provided on the upper cover 200, and an upper slider 210 cooperating with the upper chute 160 can be provided on the side wall of the detergent box 100. The upper slider 210 cooperates with the upper chute 160 to guide the movement of the upper cover 200.

[0052] As Figure 5 and Figure 6 shown, the liquid inlet 120 is provided at the lower end of the side wall of the detergent box 100. After adding detergent into the detergent bin 110, the detergent contacts the lower end of the inner wall of the detergent bin 110. By providing the liquid inlet 120 at the lower end of the side wall of the detergent box 100, the water flow entering the detergent bin 110 through the liquid inlet 120 can wash the inner wall in contact with the detergent, further preventing residues from being generated in the detergent bin 110.

[0053] Furthermore, a check valve 121 is provided at the liquid inlet 120, and the check valve 121 is used to prevent the liquid in the detergent box 100 from flowing out through the liquid inlet 120.

[0054] As Figure 4 shown, the liquid outlet 130 is provided at the upper end of the side wall of the detergent box 100, and the side wall provided with the liquid inlet 120 is disposed opposite to the side wall provided with the liquid outlet 130. After the water level in the detergent bin 110 rises to the liquid outlet 130, it flows out from the liquid outlet 130. By providing the liquid outlet 130 at the upper end of the side wall of the detergent box 100, a certain amount of water storage is provided in the detergent box 100, avoiding the water entering the detergent bin 110 from directly flowing out through the liquid outlet 130, which affects the mixing of water and detergent and thus affects the dispensing of detergent.

[0055] The dishwasher provided by the embodiment of the present invention includes: an inner tank 500, an upper rack 600, and the above-mentioned detergent dispensing mechanism. The detergent box 100 in the detergent dispensing mechanism is detachably connected to the upper rack 600. When the upper rack 600 is pushed into the inner tank 500, the liquid inlet 120 of the detergent dispensing mechanism is communicated with the inner water pipe detergent water path 510 provided on the inner tank 500.

[0056] The detergent box 100 can be installed on the upper rack 600 by bolt connection or clamping. In this embodiment, the detergent box 100 is connected to the upper rack 600 by clamping. Specifically, a clamping slot 170 is provided on the side wall of the detergent box 100, and the detergent box 100 is directly clamped on the steel wire of the upper rack 600 through the clamping slot 170, which facilitates the installation of the detergent dispensing mechanism. After the user adds detergent into the detergent box 100 and puts the upper shelf 600 into the inner tank 500, the liquid inlet 120 is connected with the inner water pipe detergent waterway 510, and the water flow of the inner water pipe detergent waterway 510 during the main wash phase is controlled by the water diverter valve. The water flows into the detergent bin 110 through the liquid inlet 120, and the water in the detergent bin 110 can flow out from the liquid outlet 130. The water flowing out from the liquid outlet 130 pushes the side plate 400 to drive the lower cover 300 to slide, so that the distribution hole 140 is opened, and the mixed detergent solution flows out along the distribution hole 140 under the dual action of gravity and water flow, thereby realizing the detergent delivery and avoiding detergent residue in the detergent bin 110.

[0057] Furthermore, the upper shelf 600 is provided with a limiting member, which is arranged opposite to the side plate 400 in the detergent dispensing mechanism. When the dispensing hole 140 is opened, the covering plate 003 abuts against the limiting member.

[0058] Specifically, the limiting member is a limiting wire 610, such as Figure 7 and Figure 8 As shown, the limiting steel wire 610 and the side plate 400 are arranged parallel to each other, and the limiting steel wire 610 can be connected to other steel wires on the upper shelf 600 by welding. When the lower cover 300 is not provided with the drain hole 311, when the side plate 400 is attached to the detergent box 100, the distance between the limiting steel wire 610 and the side plate 400 is greater than the distance between the end surface of the lower cover 300 away from the side plate 400 and the distribution hole 140. When the lower cover 300 is provided with the drain hole 311, when the side plate 400 is attached to the detergent box 100, the distance between the limiting steel wire 610 and the side plate 400 is equal to the distance between the distribution hole 140 and the drain hole 311. When the lower cover 300 slides to the position where the dispensing hole 140 is opened or the dispensing hole 140 overlaps with the liquid discharge hole 311, the side plate 400 abuts against the limiting wire 610 to prevent the lower cover 300 from continuing to slide and causing the dispensing hole 140 and the liquid discharge hole 311 to be misaligned and affect the delivery of detergent; in addition, the side plate 400 is limited by the limiting wire 610, and the limiting wire 610 has a simple structure and is easy to be set on the upper shelf 600, thereby facilitating production and processing.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, rather than to limit them; although the embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A detergent dispensing mechanism, characterized in that, Comprising: A detergent box (100), an upper cover (200) and a shielding cover plate (003), the detergent box (100) having a detergent storage chamber (110), the upper cover (200) being movably connected to the detergent box (100) to cover or open the detergent storage chamber (110); The detergent box (100) is provided with a liquid inlet (120), a liquid outlet (130) and a distribution hole (140) provided at the bottom of the detergent storage chamber (110), the shielding cover plate (003) being attached to the liquid outlet (130) and capable of covering the distribution hole (140), liquid entering the detergent storage chamber (110) through the liquid inlet (120), and the liquid in the detergent storage chamber (110) flowing through the liquid outlet (130) to drive the shielding cover plate (003) to move to open the distribution hole (140).

2. The detergent dispensing mechanism according to claim 1, characterized in that, The shielding cover plate (003) includes a lower cover (300) and a side plate (400) connected to each other, the lower cover (300) being disposed opposite to the distribution hole (140) and slidably connected to the detergent box (100), and the side plate (400) being disposed opposite to the liquid outlet (130).

3. The detergent dispensing mechanism according to claim 2, wherein The outer wall of the detergent box (100) is provided with a lower sliding block (150), and the lower cover (300) is provided with a lower sliding groove (321) slidably engaged with the lower sliding block (150).

4. The detergent dispensing mechanism according to claim 2, wherein, The lower cover (300) is provided with a liquid discharge hole (311), and when the side plate (400) is attached to the detergent box (100), the distribution hole (140) is offset from the liquid discharge hole (311), and the liquid flowing out through the liquid outlet (130) drives the side plate (400) to drive the lower cover (300) to slide, so that the liquid discharge hole (311) is opposite to the distribution hole (140).

5. The detergent dispensing mechanism according to claim 4, characterized in that, The outer wall of the detergent box (100) is provided with a first limiting structure, and the lower cover (300) is provided with a second limiting structure. When the distribution hole (140) is opposite to the liquid discharge hole (311), the first limiting structure abuts against the second limiting structure.

6. The detergent dispensing mechanism according to claim 1, wherein, The detergent dispensing mechanism further includes an elastic member, one end of the elastic member being connected to the detergent box (100) and the other end being connected to the shielding cover plate (003), the elastic member being used to make the shielding cover plate (003) have a tendency to block the distribution hole (140).

7. The detergent dispensing mechanism according to claim 1, wherein The upper cover (200) is slidably connected to the detergent box (100).

8. The detergent dispensing mechanism according to claim 7, wherein The detergent box (100) is provided with an upper sliding groove (160), and the upper cover (200) is provided with an upper sliding block (210) slidably engaged with the upper sliding groove (160).

9. The detergent dispensing mechanism according to any one of claims 1 to 8, characterized in that The liquid inlet (120) is provided at the lower end of the side wall of the detergent box (100).

10. The detergent dispensing mechanism according to claim 9, characterized in that, The liquid inlet (120) is provided with a one-way valve (121), and the one-way valve (121) is used to prevent the liquid in the detergent box (100) from flowing out through the liquid inlet (120).

11. The detergent dispensing mechanism according to claim 9, wherein, The liquid outlet (130) is provided at the upper end of the side wall of the detergent box (100), and the side wall provided with the liquid inlet (120) is disposed opposite to the side wall provided with the liquid outlet (130).

12. A dishwasher, characterized in that, Comprising: An inner container (500), an upper shelf (600), and a detergent dispensing mechanism according to any one of claims 1-11, wherein the detergent box (100) in the detergent dispensing mechanism is detachably connected to the upper shelf (600), and when the upper shelf (600) is pushed into the inner container (500), the liquid inlet (120) of the detergent dispensing mechanism is communicated with an inner water pipe detergent water path (510) provided on the inner container (500).

13. The dishwasher according to claim 12, characterized in that, The upper shelf (600) is provided with a limiting member, and the limiting member is disposed opposite to a cover plate (003) in the detergent dispensing mechanism. When the dispensing hole (140) is opened, the cover plate (003) abuts against the limiting member.

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