Additive feeding device

Abstract

The invention provides an additive feeding device which comprises a box body and a suction pump, a liquid storage cavity and a feeding cavity are formed in the box body, a first flow channel and a second flow channel which vertically extend respectively are arranged on the outer side of the top of the box body, and a liquid outlet communicated with the suction pump and a liquid inlet communicated with the liquid storage cavity are formed in the top and the bottom of the first flow channel respectively; a liquid inlet communicated with the suction pump and a liquid outlet communicated with the feeding cavity are respectively formed in the top and the bottom of the second flow channel; the first flow channel and the second flow channel which vertically extend are formed in the outer side of the top of the box cover, so that the additive can be prevented from being condensed in the first flow channel to block the first flow channel, the feeding of the additive in the second flow channel can be accelerated, and the additive is prevented from flowing back into the suction pump from the second flow channel; and the additive is prevented from being condensed in the second runner to block the second runner.

Description

Technical Field

[0001] The invention belongs to the technical field of household appliances, and in particular relates to an additive dispensing device. Background Art

[0002] At present, the external automatic additive delivery device is a new product that is deeply loved by users. The existing external additive delivery device includes a box body and a suction channel. The box body includes a main body with an opening and a top cover covering the opening. The main body is provided with a liquid storage cavity and a delivery cavity. The outer side of the top of the top cover is provided with a suction channel, and a suction pump is provided on the suction channel. The liquid inlet of the suction channel is connected to the liquid storage cavity through the channel formed by the hollow inside of the top cover, and the liquid outlet of the suction channel is connected to the delivery cavity. When delivering, the suction channel delivers the additive in the liquid storage cavity through the channel inside the top cover into the delivery cavity, and the delivery cavity then delivers the additive into the washing machine;

[0003] In the existing additive delivery device, the suction flow channel extends horizontally on the top cover, and the two ends of the suction flow channel in the extension direction are respectively provided with a liquid inlet connected to the liquid storage chamber and a liquid outlet connected to the delivery chamber. Under the action of the suction pump, the additive in the liquid storage chamber flows horizontally in the suction flow channel, so that the additive is easy to form additive agglomerates in the suction flow channel, resulting in the suction flow channel being easily blocked, so that the additive cannot be quickly delivered into the delivery chamber due to its own gravity, and the additive in the suction pipe downstream of the suction pump is easy to flow back into the suction pump.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an additive delivery device, which can prevent the additive from condensing in the first flow channel and blocking the first flow channel by arranging a vertically extending first flow channel and a second flow channel on the outer side of the top of the box cover, and can speed up the delivery of the additive in the second flow channel, prevent the additive from flowing back from the second flow channel to the suction pump, and prevent the additive from condensing in the second flow channel and blocking the second flow channel.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0007] The present invention provides an additive dosing device, comprising a box body and a suction pump, wherein a liquid storage chamber and a dosing chamber are arranged in the box body, a first flow channel and a second flow channel extending vertically are arranged on the outer side of the top of the box body, a liquid outlet connected to the suction pump and a liquid inlet connected to the liquid storage chamber are arranged at the top and bottom of the first flow channel, respectively, a liquid inlet connected to the suction pump and a liquid outlet connected to the dosing chamber are arranged at the top and bottom of the second flow channel, respectively.

[0008] Furthermore, the box body includes a main body with a top opening and a top cover covering the opening, the outer side of the top of the top cover protrudes upward to form an upper protrusion, and the upper protrusion is hollow inside to form a first flow channel and a second flow channel.

[0009] Furthermore, the upper raised portion has vertical side walls forming the first flow channel side walls and the second flow channel side walls and a horizontal bottom wall forming the first flow channel bottom wall and the second flow channel bottom wall, the first flow channel liquid outlet and the second flow channel liquid inlet are arranged on the top of the vertical side walls of the upper raised portion, and the first flow channel liquid inlet and the second flow channel liquid outlet are arranged on the horizontal bottom wall of the upper raised portion.

[0010] Furthermore, the first channel liquid outlet and the second channel liquid inlet are circular openings of the same size, the first channel liquid outlet and the second channel liquid inlet are located at the same vertical height, the liquid inlet of the suction pump is arranged toward the first channel liquid outlet, and is interconnected with the first channel liquid outlet, and the liquid outlet of the suction pump is arranged toward the second channel liquid inlet, and is interconnected with the second channel liquid inlet.

[0011] Furthermore, a mixing chamber and a water inlet channel are formed in the hollow interior of the top cover, the mixing chamber has a horizontal top wall, a horizontal bottom wall and a vertical side wall, the horizontal top wall and the horizontal bottom wall of the mixing chamber are respectively provided with a liquid inlet connected to the second channel and a liquid outlet connected to the delivery chamber, and the vertical side wall of the mixing chamber is provided with a water inlet connected to the water inlet channel.

[0012] Furthermore, the outer side of the bottom of the top cover protrudes downward to form a lower protrusion inserted into the delivery cavity, and the lower protrusion is hollow inside to form a vertically extending delivery channel connecting the liquid outlet of the mixing cavity and the delivery cavity, and the liquid outlet of the delivery channel faces downward.

[0013] Furthermore, a liquid storage box is provided inside the main body, a liquid storage cavity is formed inside the liquid storage box, a delivery cavity is formed between the outer side of the liquid storage box and the inner side of the main body, the delivery cavity includes a vertical cavity section and a horizontal cavity section arranged at the bottom of the vertical cavity section, the lower protrusion is inserted into the vertical cavity section, and a liquid delivery outlet is arranged at the bottom of the horizontal cavity section.

[0014] Furthermore, a third flow channel extending vertically is formed in the hollow interior of the top cover, and a fourth flow channel extending vertically and connected to the liquid storage chamber is formed in the hollow interior of the lower protrusion. The fourth flow channel, the third flow channel and the first flow channel are connected in sequence.

[0015] Furthermore, a notch is provided at the bottom of the lower raised portion, the delivery channel extends to the top of the notch, the liquid outlet of the delivery channel is provided at the top of the notch, and the fourth channel extends downward beyond the liquid outlet of the delivery channel and extends to the liquid outlet at the bottom of the liquid storage box.

[0016] Furthermore, two liquid storage chambers for storing additives with different functions and a delivery chamber are formed inside the box body. Two first flow channels and two second flow channels are provided on the outer side of the top of the box body. Each first flow channel is connected to the corresponding liquid storage chamber, and the two second flow channels are connected to the delivery chamber. All flow channels are formed by the hollow interior of the upper raised portion. The two second flow channels are arranged between the two first flow channels. Two water inlet flow channels corresponding to the liquid storage chambers are formed inside the box cover.

[0017] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0018] By arranging vertically extending first and second flow channels on the outer side of the top of the box cover, it is possible to prevent the additive from condensing in the first flow channel and blocking the first flow channel, and to speed up the release of the additive in the second flow channel, prevent the additive from flowing back from the second flow channel to the suction pump, and prevent the additive from condensing in the second flow channel and blocking the second flow channel.

[0019] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0021] Figure 1 is a structural schematic diagram of an additive delivery device provided by an embodiment of the present invention from one viewing angle;

[0022] Figure 2 is a schematic structural diagram of the additive delivery device provided by an embodiment of the present invention from another perspective;

[0023] Figure 3 yes Figure 2 Cross-section at AA;

[0024] Figure 4 is a partial schematic diagram of an additive delivery device provided in an embodiment of the present invention;

[0025] Figure 5 yes Figure 4 Cross-section at BB;

[0026] Figure 6 yes Figure 4 Cross-section at AA;

[0027] Figure 7is a schematic structural diagram of a lower cover in a top cover provided by an embodiment of the present invention from one viewing angle;

[0028] Figure 8 It is a schematic structural diagram of the lower cover of the top cover provided by an embodiment of the present invention from another perspective.

[0029] Icons: 1-box body; 11-dispensing chamber; 111-vertical chamber section; 112-horizontal chamber section; 113-liquid dispensing outlet; 12-main body; 13-top cover; 131-mixing chamber; 1311-water inlet of the mixing chamber; 132-water inlet channel; 133-third channel; 14-upper raised portion; 141-first channel; 1411-liquid outlet of the first channel; 142-second channel; 1421-liquid inlet of the second channel; 143-vertical side wall of the upper raised portion; 144-horizontal bottom wall of the upper raised portion; 145-raised portion; 15-lower raised portion; 151-dispensing channel; 1511-liquid outlet of the dispensing channel; 152-fourth channel; 2-suction pump; 3-liquid storage box; 31-liquid storage chamber; 4-gap; 5-water inlet pipe.

[0030] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0032] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] like Figure 1-3As shown, the present invention provides an additive delivery device, including a box body 1 and a suction pump 2, wherein a liquid storage chamber 31 and a delivery chamber 11 are provided in the box body 1, and a first flow channel 141 and a second flow channel 142 extending vertically are provided on the outer side of the top of the box body 1, and a liquid outlet connected to the suction pump 2 and a liquid inlet connected to the liquid storage chamber 31 are respectively provided at the top and bottom of the first flow channel 141, and a liquid inlet connected to the liquid storage chamber 31 are respectively provided at the top and bottom of the second flow channel 142, and a liquid inlet connected to the suction pump 2 and a liquid outlet connected to the delivery chamber 11 are respectively provided at the top and bottom of the second flow channel 142.

[0035] In an embodiment of the present invention, by arranging vertically extending first flow channel 141 and second flow channel 142 on the outer side of the top of the box cover, it is possible to prevent the additive from condensing in the first flow channel 141 and blocking the first flow channel 141, and to accelerate the release of the additive in the second flow channel 142, prevent the additive from flowing back from the second flow channel 142 to the suction pump 2, and prevent the additive from condensing in the second flow channel 142 and blocking the second flow channel 142.

[0036] The additive delivery device is used in a washing machine, and the delivery outlet 113 of the delivery chamber 11 is connected to the water storage drum of the washing machine;

[0037] The top of the box body 1 has an outer side and an inner side relative to the interior of the box body 1, the inner side of the top of the box body 1 is inside the box body 1, and the outer side of the top of the box body 1 is outside the box, and the first flow channel 141 and the second flow channel 142 are formed outside the box body 1; the first flow channel 141 and the second flow channel 142 are integrally formed with the box body 1, or the first flow channel 141 and the second flow channel 142 are installed on the box body 1.

[0038] The additive in the liquid storage chamber 31 enters the first flow channel 141 from the liquid inlet of the first flow channel 141 at the bottom of the first flow channel 141, flows in the first flow channel 141 along the vertical direction, and then enters the suction pump 2 from the liquid outlet 1411 of the first flow channel at the top of the first flow channel 141, so that the additive enters from the bottom and exits from the top. Due to the gravity of the additive itself, the first flow channel 141 is prevented from being blocked.

[0039] The additive entering the suction pump 2 enters the second flow channel 142 from the liquid inlet of the second flow channel 142 located at the top of the second flow channel 142, flows along the vertical direction in the second flow channel 142, and then enters the delivery chamber 11 from the liquid outlet 1421 of the second flow channel at the bottom of the second flow channel 142, so that the additive enters from top to bottom and exits, speeding up the delivery of the additive. Due to the self-gravity of the additive, the second flow channel 142 is prevented from being blocked and the additive is prevented from flowing back to the suction pump 2.

[0040] Specifically, two liquid storage chambers 31 for storing additives with different functions and a delivery chamber 11 are formed inside the box body 1. Two first flow channels 141 and two second flow channels 142 are provided on the outer side of the top of the box body 1. Each first flow channel 141 is connected to the corresponding liquid storage chamber 31, and the two second flow channels 142 are connected to the delivery chamber 11. The upper raised portion 14 described below is hollow inside to form all the flow channels. The two second flow channels 142 are provided between the two first flow channels 141. Two water inlet flow channels 132 corresponding to the liquid storage chamber 31 are formed inside the box cover described below.

[0041] The two liquid storage chambers 31 may include a liquid storage chamber 31 for holding detergent and a liquid storage chamber 31 for holding rinse agent, each liquid storage chamber 31 corresponds to a first flow channel 141, a second flow channel 142, a suction pump 2, a mixing chamber 131 described below, a delivery flow channel 151 described below, a fourth flow channel 152 described below, a third flow channel 133 described below and a water inlet flow channel 132 described below; the two delivery flow channels 151 corresponding to the two liquid storage chambers 31 share a delivery chamber 11, and each water inlet flow channel 132 corresponds to a water inlet pipe 5.

[0042] like Figure 3-6 As shown, in the embodiment of the present invention, the box body 1 includes a main body 12 with a top opening and a top cover 13 covering the opening, the outer side of the top of the top cover 13 protrudes upward to form an upper protrusion 14, and the upper protrusion 14 is hollow inside to form a first flow channel 141 and a second flow channel 142.

[0043] In the embodiment of the present invention, specifically, the top cover 13 includes an upper cover and a lower cover that are buckled with each other, the bottom of the upper cover is provided with a lower baffle extending downward, the top of the lower cover is provided with an upper baffle extending upward, the top surface of the upper baffle is against the bottom surface of the lower baffle, the upper baffle and the lower baffle are buckled to form a flow channel or cavity inside the top cover 13, the flow channel can be the water inlet flow channel 132 and the third flow channel 133 described below, and the cavity can be the mixing chamber 131 described below;

[0044] The first flow channel 141 and the second flow channel 142 are arranged on the upper cover and are integrally formed with the upper cover. Specifically, the upper cover is square and includes an upper cover top wall, an upper cover bottom wall and a side wall connecting the upper cover top wall and the upper cover bottom wall. The upper cover top wall protrudes upward to form an upper raised portion 14. The upper raised portion 14 is hollow inside to form the first flow channel 141 and the second flow channel 142. The first flow channel 141 and the second flow channel 142 are arranged side by side in the upper raised portion 14. The first flow channel 141 and the second flow channel 142 are integrated on the same upper raised portion 14, which can improve the compactness of the structure of the delivery device.

[0045] Furthermore, the upper raised portion 14 has vertical side walls 143 forming side walls of the first flow channel 141 and side walls of the second flow channel 142, and a horizontal bottom wall 144 forming the bottom wall of the first flow channel 141 and the bottom wall of the second flow channel 142. The liquid outlet of the first flow channel 141 and the liquid inlet of the second flow channel 142 are arranged on the top of the vertical side walls of the upper raised portion 14, and the liquid inlet of the first flow channel 141 and the liquid outlet of the second flow channel 142 are arranged on the horizontal bottom wall of the upper raised portion 14.

[0046] The liquid outlet 1411 of the first flow channel and the liquid inlet 142 of the second flow channel are integrated on the vertical side wall 143 of the same upper raised portion, which can simplify the installation between the first flow channel 141 and the second flow channel 142 and the suction pump 2 and prevent the complication of the pipeline layout; the liquid inlet 141 of the first flow channel and the liquid outlet 1421 of the second flow channel are integrated on the horizontal bottom wall 144 of the same upper raised portion, and the horizontal bottom wall 144 of the upper raised portion coincides with the top wall of the upper cover, so that the liquid inlet 141 of the first flow channel and the liquid outlet 1421 of the second flow channel are hidden, simplifying the structure of the upper raised portion 14;

[0047] Preferably, the liquid outlet of the first flow channel 141 and the liquid inlet of the second flow channel 142 are circular openings of the same size, and the liquid outlet of the first flow channel 141 and the liquid inlet of the second flow channel 142 are located at the same vertical height, which facilitates the installation between the first flow channel 141 and the second flow channel 142 and the suction pump 2;

[0048] The liquid inlet of the suction pump 2 is arranged toward the liquid outlet of the first flow channel 141, and is connected to the liquid outlet of the first flow channel 141. The liquid outlet of the suction pump 2 is arranged toward the liquid inlet of the second flow channel 142, and is connected to the liquid inlet of the second flow channel 142.

[0049] Two protrusions 145 are provided on the vertical side wall of the upper protrusion 14. The two protrusions 145 are cylindrical. The inner circumferential walls of the two protrusions 145 respectively surround the first flow channel 141 and the liquid inlet of the second flow channel 142. The liquid outlet of the suction pump 2 and the liquid inlet of the suction pump 2 are cylindrical. The liquid outlet of the suction pump 2 and the liquid inlet of the suction pump 2 have the same size and are located at the same height on the suction pump 2. The liquid outlet 1411 of the first flow channel is sleeved outside the liquid inlet of the suction pump 2 or the liquid outlet of the first flow channel. The port 1411 is sleeved in the liquid inlet of the suction pump 2, so that the liquid inlet of the suction pump 2 and the liquid outlet 1411 of the first flow channel are sleeved and connected with each other, and the liquid inlet of the second flow channel 142 is sleeved outside the liquid outlet of the suction pump 2 or the liquid inlet of the second flow channel 142 is sleeved in the liquid outlet of the suction pump 2, so that the liquid outlet of the suction pump 2 and the liquid inlet of the second flow channel 142 are sleeved and connected with each other, thereby improving the sealing between the first suction pump 2 and the first flow channel 141 and the second flow channel 142, and preventing leakage of additives.

[0050] like Figure 3-7As shown, in the embodiment of the present invention, the top cover 13 is hollow inside to form a mixing chamber 131 and a water inlet channel 132, the mixing chamber 131 has a horizontal top wall, a horizontal bottom wall and a vertical side wall, the horizontal top wall and the horizontal bottom wall of the mixing chamber 131 are respectively provided with a liquid inlet connected to the second channel 142 and a liquid outlet connected to the delivery chamber 11, and the vertical side wall of the mixing chamber 131 is provided with a water inlet connected to the water inlet channel 132.

[0051] In the embodiment of the present invention, the additive in the second flow channel 142 enters the mixing chamber 131, and the flushing water of the water inlet flow channel 132 enters the mixing chamber 131 to flush the additive in the mixing chamber 131 and mixes with the additive to form an additive solution. The additive solution enters the delivery chamber 11 from the liquid outlet of the mixing chamber 131;

[0052] The additive flows vertically into the mixing chamber 131. Since the water inlet 1311 of the mixing chamber is arranged on the vertical side wall of the mixing chamber 131, the flushing water in the water inlet channel 132 enters the mixing chamber 131, so that the flow direction of the additive is perpendicular to the flow direction of the flushing water, and the additive and the flushing water are fully mixed.

[0053] Since the second flow channel 142 has a certain height and the second flow extends vertically, it can be ensured that the water flow will not splash upwards into the suction pump 2 in the mixing chamber 131 under the maximum water pressure, and the function of the one-way valve is realized. The water flow splashes upwards in the mixing chamber 131, which will quickly flush the residual additives in the second flow channel 142. Figure 6 The arrows in the figure indicate the direction of water flow.

[0054] like Figure 7 and Figure 8 As shown, further, the outer side of the bottom of the top cover 13 protrudes downward to form a lower protrusion 15 that is inserted into the delivery chamber 11, and the lower protrusion 15 is hollow inside to form a vertically extending delivery channel 151 that connects the liquid outlet of the mixing chamber 131 and the delivery chamber 11, and the liquid outlet 1511 of the delivery channel faces downward.

[0055] The top cover 13 includes an upper cover and a lower cover, the lower cover includes a lower cover top wall, a lower cover bottom wall, and a lower cover side wall connecting the lower cover top wall and the lower cover bottom wall, the lower cover bottom wall protrudes downward to form a lower protrusion 15, the lower protrusion 15 is hollow inside to form a delivery channel 151, the lower protrusion 15 is inserted into the delivery cavity 11, and the delivery channel 151 is inserted into the delivery cavity 11, thereby achieving accurate delivery of the additive;

[0056] The delivery channel 151 extends vertically in the delivery cavity 11, which can accelerate the additive solution to enter the delivery cavity 11 and accelerate the delivery of the additive solution;

[0057] Furthermore, a liquid storage box 3 is provided inside the main body 12, and a liquid storage cavity 31 is formed inside the liquid storage box 3. A delivery cavity 11 is formed between the outer side of the liquid storage box 3 and the inner side of the main body 12. The delivery cavity 11 is L-shaped. The delivery cavity 11 includes a vertical cavity section 111 and a horizontal cavity section 112 arranged at the bottom of the vertical cavity section 111. The lower protrusion 15 is inserted into the vertical cavity section 111, and a liquid delivery outlet 113 is arranged at the bottom of the horizontal cavity section 112.

[0058] The delivery channel 151 is inserted into the vertical cavity section 111, and the additive in the delivery channel 151 enters the vertical cavity section 111, enters the horizontal cavity section 112 through the vertical cavity section 111, and comes out from the liquid delivery outlet 113 at the bottom of the horizontal cavity section 112; the vertical cavity section 111 can accelerate the entry of the additive into the horizontal cavity section 112, and the horizontal cavity section 112 gradually tilts from top to bottom from one end of the vertical cavity section 111 toward the liquid delivery outlet 113, which can accelerate the flow of the additive solution to the liquid delivery outlet 113 and avoid the residue of the additive solution.

[0059] A gap is left between the outer side of the liquid storage box 3 and the inner side of the main body 12 in the vertical direction to form a vertical cavity section 111, and a gap is left between the outer side of the liquid storage box 3 and the inner side of the bottom of the main body 12 in the horizontal direction to form a horizontal front section. There is no need to set up an additional delivery box for delivering additives in the box body 1.

[0060] like Figure 3 , Figure 4 and Figure 5 As shown, in the embodiment of the present invention, the top cover 13 is hollow inside and a third flow channel 133 extending vertically is formed, the lower raised portion 15 is hollow inside and a fourth flow channel 152 extending vertically and connected to the liquid storage chamber 31 is formed, and the fourth flow channel 152, the third flow channel 133 and the first flow channel 141 are connected in sequence.

[0061] In the embodiment of the present invention, when the suction pump 2 sucks the additive in the liquid storage chamber 31, the additive first enters the fourth flow channel 152, then enters the fourth flow channel 152, and finally enters the first flow channel 141; further, the lower protrusion 15 protrudes toward the bottom of one side of the liquid storage box 3 to form a horizontal protrusion, and the interior of the horizontal protrusion is hollow to form a horizontal flow channel connected to the fourth flow channel 152, and the horizontal flow channel is inserted into the liquid storage box 3 to prevent leakage of the additive when pumping liquid;

[0062] Furthermore, a notch 4 is provided at the bottom of the lower raised portion 15, the delivery channel 151 extends to the top of the notch 4, the liquid outlet 1511 of the delivery channel is provided at the top of the notch 4, and the fourth channel 152 extends downward beyond the liquid outlet 1511 of the delivery channel and extends to the liquid outlet at the bottom of the liquid storage box 3.

[0063] A notch 4 is provided at the bottom of the lower raised portion 15, and a liquid outlet 1511 of the delivery channel is provided at the top of the notch 4. The fourth channel 152 extends downward beyond the liquid outlet 1511 of the delivery channel, so that there is a distance between the delivery channel 151 and the bottom of the vertical cavity section 111 and the horizontal cavity section 112, so that the additive flowing out of the delivery channel 151 can first flow in the vertical cavity section 111 for a period of time and then enter the horizontal cavity section 112, so that the additive and the flushing water can be fully mixed.

[0064] The fourth flow channel 152 extends downward to the bottom of the liquid storage box 3, so that when there is less additive in the liquid storage box 3, the additive can also enter the fourth flow channel 152 under the suction of the suction pump 2, and then enter the first flow channel 141 and the second flow channel 142;

[0065] The fourth flow channel 152 and the delivery flow channel 151 are integrated on the lower protrusion 15, which can improve the compactness of the delivery device structure.

[0066] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. An additive delivery device, comprising a box body and a suction pump, wherein the box body is provided with a liquid storage chamber and a delivery chamber, characterized in that: The outer side of the top of the box body is provided with a first flow channel and a second flow channel extending vertically respectively, the top and bottom parts of the first flow channel are respectively provided with a liquid outlet connected to a suction pump and a liquid inlet connected to the liquid storage chamber, and the top and bottom parts of the second flow channel are respectively provided with a liquid inlet connected to a suction pump and a liquid outlet connected to the delivery chamber.

2. The delivery device according to claim 1, characterized in that: The box body comprises a main body with an opening at the top and a top cover covering the opening. The outer side of the top of the top cover protrudes upward to form an upper convex part, and the upper convex part is hollow inside to form a first flow channel and a second flow channel.

3. The delivery device according to claim 2, characterized in that: The upper raised portion has vertical side walls forming the first flow channel side walls and the second flow channel side walls and a horizontal bottom wall forming the first flow channel bottom wall and the second flow channel bottom wall. The first flow channel liquid outlet and the second flow channel liquid inlet are arranged on the top of the vertical side walls of the upper raised portion, and the first flow channel liquid inlet and the second flow channel liquid outlet are arranged on the horizontal bottom wall of the upper raised portion.

4. The delivery device according to claim 3, characterized in that: The first flow channel liquid outlet and the second flow channel liquid inlet are circular openings of the same size, and the first flow channel liquid outlet and the second flow channel liquid inlet are located at the same vertical height, the liquid inlet of the suction pump is arranged toward the first flow channel liquid outlet, and is interconnected with the first flow channel liquid outlet, and the liquid outlet of the suction pump is arranged toward the second flow channel liquid inlet, and is interconnected with the second flow channel liquid inlet.

5. The delivery device according to claim 2, characterized in that: A mixing chamber and a water inlet channel are formed in the hollow interior of the top cover. The mixing chamber has a horizontal top wall, a horizontal bottom wall and vertical side walls. The horizontal top wall and the horizontal bottom wall of the mixing chamber are respectively provided with a liquid inlet connected to the second channel and a liquid outlet connected to the delivery chamber. The vertical side wall of the mixing chamber is provided with a water inlet connected to the water inlet channel.

6. The delivery device according to claim 5, characterized in that: The outer side of the bottom of the top cover protrudes downward to form a lower protrusion inserted into the delivery cavity. The lower protrusion is hollow inside to form a vertically extending delivery channel connecting the liquid outlet of the mixing cavity and the delivery cavity, and the liquid outlet of the delivery channel faces downward.

7. The delivery device according to claim 6, characterized in that: A liquid storage box is provided inside the main body, and a liquid storage cavity is formed inside the liquid storage box. A delivery cavity is formed between the outer side of the liquid storage box and the inner side of the main body. The delivery cavity includes a vertical cavity section and a horizontal cavity section arranged at the bottom of the vertical cavity section. The lower protrusion is inserted into the vertical cavity section, and a liquid delivery outlet is arranged at the bottom of the horizontal cavity section.

8. The delivery device according to claim 6, characterized in that: A third flow channel extending vertically is formed in the hollow interior of the top cover, and a fourth flow channel extending vertically and connected to the liquid storage chamber is formed in the hollow interior of the lower protrusion. The fourth flow channel, the third flow channel and the first flow channel are connected in sequence.

9. The delivery device according to claim 8, characterized in that: A notch is provided at the bottom of the lower raised portion, the delivery channel extends to the top of the notch, the liquid outlet of the delivery channel is provided at the top of the notch, and the fourth channel extends downward beyond the liquid outlet of the delivery channel and extends to the liquid outlet at the bottom of the liquid storage box.

10. The additive dosing device according to claim 2, characterized in that: Two liquid storage chambers for storing additives with different functions and a delivery chamber are formed inside the box body. Two first flow channels and two second flow channels are arranged on the outer side of the top of the box body. Each first flow channel is connected to the corresponding liquid storage chamber, and the two second flow channels are connected to the delivery chamber. The upper raised part is hollow inside to form all the flow channels. The two second flow channels are arranged between the two first flow channels. Two water inlet flow channels corresponding to the liquid storage chambers are formed inside the box cover.

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