Linkage switching valve, washing additive feeding device and control method

Abstract

The invention discloses a linkage switching valve. The linkage switching valve comprises a first channel and a second channel which communicate with each other; and valve plugs which can be impacted by water flow to move towards the inlet or the outlet are respectively arranged in the two channels. The invention further discloses a feeding device which comprises a first feeding water path and a second feeding water path which are respectively used for extracting the first washing additive and the second washing additive; the main water inlet path is used for feeding washing additive mixed liquid outwards and / or feeding water; an outlet of the first putting water path and an outlet of the second putting water path are communicated with an inlet of a first channel and an inlet of a second channel of the linkage switching valve in a one-to-one correspondence manner; outlets of the two channels of the linkage switching valve are communicated with the main water inlet way. According to the invention, different feeding water paths are communicated with the main water inlet water path through the linkage switching valve, so that the purpose of automatically closing the outlet of the corresponding water path when any feeding water path extracts the washing additive is achieved, and the remarkable technical progress of improving the extraction rate of the washing additive is further achieved.

Description

Technical Field

[0001] The present invention belongs to the field of household washing appliances, and specifically, relates to a washing additive dispensing device; in particular, relates to a linkage switching valve of the washing additive dispensing device; in particular, also relates to a control method of the above-mentioned washing additive dispensing device. Background Art

[0002] With the continuous improvement of people's living standards, washing machines have become one of the essential household appliances for family life. The drum washing machines and fully automatic pulsator washing machines in the prior art are usually provided with a washing additive delivery device for delivering detergent into the washing tub of the washing machine; generally, under the action of the water flow of the washing machine, the washing additive manually or automatically drawn and added by the user in the washing additive delivery device is flushed into the washing tub of the washing machine to achieve the purpose of delivering and using the washing additive. The above-mentioned washing additive can be any one or a combination of existing additives that can improve the treatment effect of clothes, such as detergents, softeners, disinfectants, etc.

[0003] Existing dispensing devices generally install a suction pump on each dispensing water channel, and use the suction force of the pump to draw the detergent additives into the corresponding dispensing water channel, so as to achieve the effect of dispensing the extracted detergent additives into the washing machine barrel together with the incoming water flow; however, the cost of the above-mentioned suction pump is relatively high. In order to reduce the cost, a detergent dispensing device that uses a negative pressure suction structure to extract the detergent additives is proposed. However, the above-mentioned negative pressure suction structure also requires a separate water inlet water channel to provide negative pressure, which complicates the water channel.

[0004] In particular, when using negative pressure to extract detergent additives from the liquid storage chamber, there is a problem that the water outlet for extracting detergent additives is connected to the atmosphere, resulting in too low suction force in the water channel and a slow rate of extracting detergent additives from the liquid storage chamber. Therefore, how to automatically control the closing of the extraction water outlet and increase the extraction rate of detergent additives has become an urgent problem to be solved.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a linkage switching valve to achieve the purpose of automatically switching the outflow outlets of different water channels; at the same time, the present invention also provides a linkage switching valve to achieve the purpose of linkage switching control of two water channels by utilizing the inlet water flow of different water channels; and the present invention also provides a washing additive delivery device and control method to achieve the purpose of linkage switching control of the outlet of any water channel by utilizing the inlet water flow of another water channel, thereby achieving the effect of automatic and efficient extraction and delivery of different types of washing additives.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0008] A linkage switching valve comprises: two channels, each for inflow of different inlet water flows; a first channel and a second channel are connected; a valve plug is respectively arranged in the two channels and can be moved towards an inlet or an outlet direction by the impact of the water flow; when water flows into the first channel / the second channel, the inlet water flow moves the valve plug in the first channel / the second channel towards the outlet direction to close the outlet of the first channel / the second channel, and the valve plug in the second channel / the first channel moves towards the inlet direction to close the inlet of the second channel / the first channel, and the inlet water flows out from the outlet of the second channel / the first channel.

[0009] Furthermore, it also includes a third outflow channel, the inlet of the third outflow channel is connected to the connecting point of the two channels; when water enters the first channel and the second channel at the same time, the incoming water flow moves the valve plugs in the first channel and the second channel toward the outlet direction to close the outlets of the first channel and the second channel, and the incoming water flow flows out from the outlet of the third outflow channel.

[0010] Furthermore, a first channel and a second channel are provided in parallel in the reversing valve, and the two ends of the two channels are an inlet and an outlet respectively. The middle parts of the two channels are connected to the two ends of the connecting channel one by one, and the middle part of the connecting channel is connected to the inlet of the third outflow channel. The outlet of the third connecting channel and the outlet of the first channel and the outlet of the second channel are on the same side of the reversing valve.

[0011] Furthermore, valve plugs that can move freely along the channels are respectively provided in the two channels of the reversing valve, and elastic parts are respectively provided in the two channels, and the two ends of the elastic parts are respectively connected to the housing of the reversing valve and the valve plugs in the corresponding channels, so as to keep the valve plug in a normal position where the connecting channel and the corresponding channel are connected; preferably, when the valve plug is in the normal position, the outlet of the channel where the valve plug is located is connected to the connecting channel; further preferably, when the valve plug is in the normal position, the inlet of the channel where the valve plug is located is disconnected from the connecting channel.

[0012] Furthermore, the axial height of the valve plug is smaller than the distance between the point where the channel where the valve plug is located and the connecting channel is connected and the channel inlet, and the axial height of the valve plug is smaller than the distance between the point where the channel where the valve plug is located and the connecting channel is connected and the channel outlet; when the valve plug is in the closed channel inlet position, the outlet of the channel where the valve plug is located is connected to the connecting channel; when the valve plug is in the closed channel outlet position, the inlet of the channel where the valve plug is located is connected to the connecting channel.

[0013] Furthermore, slideways are respectively provided in the two channels along the extending direction of the channels, and a sliding portion corresponding to the first slideway is provided on the outer wall of the valve plug, so as to limit the valve plug to move only along the extending direction of the channels.

[0014] Furthermore, the inlets of the two channels are in at least partially separable contact with an end face of the valve plug facing the inlet, and the separable contact is provided with at least one circle of inlet sealing ring, which is arranged on the inner wall of the inlet of the channel, or the end face of the valve plug facing the inlet; the outlets of the two channels are in at least partially separable contact with the end face of the valve plug facing the outlet, and the separable contact is provided with at least one circle of outlet sealing ring, which is arranged on the inner wall of the outlet of the channel, or the end face of the valve plug facing the outlet.

[0015] Preferably, the end of the valve plug facing the channel inlet is a hemispherical surface, the inner wall of the channel inlet is provided with a circle of inlet sealing ring, and the radial dimension of the inlet sealing ring is smaller than the maximum radial dimension of the hemispherical surface; the end of the valve plug facing the channel outlet is a plane, a circle of coaxially arranged outlet sealing ring is provided on the plane of the valve plug, the outlet of the channel is provided with a circle of annular ribs protruding radially inward, and the radial dimension of the outlet sealing ring is larger than the inner radial dimension of the annular rib.

[0016] The present invention also provides a dosing device, which includes: a first dosing waterway, used to extract a first washing additive stored in a first liquid storage chamber; a second dosing waterway, used to extract a second washing additive stored in a second liquid storage chamber; a main water inlet waterway, used to discharge a washing additive mixture and / or inlet water; and having the above-mentioned linkage switching valve; the outlet of the first dosing waterway and the outlet of the second dosing waterway are connected to the inlet of the first channel and the inlet of the second channel of the linkage switching valve in a one-to-one correspondence; the outlets of the two channels of the linkage switching valve are connected to the main water inlet waterway.

[0017] Furthermore, the first water channel and the second water channel are respectively provided with negative pressure suction structures, and the negative pressure ports of the two negative pressure suction structures are connected. When the incoming water flows through any water channel, negative pressure is formed in the other water channel to extract the corresponding washing additive.

[0018] Furthermore, the outlet of the third outflow channel of the linkage switching valve is connected to the main water inlet waterway.

[0019] The present invention also provides a control method for any of the above-mentioned delivery devices, which includes: when delivering the first washing additive extracted into the first delivery waterway / the second washing additive into the second delivery waterway, water is fed into the first delivery waterway / the second delivery waterway, the incoming water flow enters the first channel / the second channel of the linkage switching valve, the valve plug in the first channel / the second channel corresponds to closing the outlet of the first channel / the second channel, and the valve plug in the second channel / the first channel corresponds to closing the inlet of the second channel / the first channel, and the washing additive flows into the main water inlet waterway from the outlet of the second channel / the first channel together with the incoming water flow and is delivered outward.

[0020] Furthermore, when the first detergent additive / the second detergent additive is added,

[0021] First, water is introduced into the second delivery water channel / the first delivery water channel, and the inlet water flow closes the outlet of the second channel / the first channel of the linkage switching valve and the inlet of the first channel / the second channel, so that the outlet of the first delivery water channel / the second delivery water channel is closed, and the first detergent additive stored in the first liquid storage chamber / the second detergent additive stored in the second liquid storage chamber is drawn into the first delivery water channel / the second delivery water channel by using the negative pressure generated by the inlet water flow;

[0022] Water is then introduced into the first and second water channels at the same time, the inlet water flow closes the outlets of the first and second channels of the linkage switching valve, and opens the outlet of the third outflow channel, and the first washing additive / second washing additive extracted from the first and second water channels is flushed into the main water inlet water channel by the flowing water flow and released outward.

[0023] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0024] 1. The present invention achieves the purpose of synchronously closing the inlet of another channel for water supply to different channels by setting the linkage switching valve as above, thereby achieving the effect of linkage opening and closing control of two different channels by using different inlet water flows.

[0025] 2. The present invention connects different water channels to the main water inlet channel via a linkage switching valve, thereby achieving the effect of automatically closing the corresponding water channel outlet when the washing additive is extracted from the water channel, thereby achieving a significant technical progress of forming a sealed space for the water channel for extracting the washing additive and greatly improving the extraction rate of the washing additive from the liquid storage chamber.

[0026] At the same time, the invention has a simple structure, a concise method, and a significant effect, and is suitable for popularization and use.

[0027] 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

[0028] 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:

[0029] Figure 1 is a partial structural schematic diagram of a washing machine in an embodiment of the present invention;

[0030] Figure 2is a schematic diagram of the principle of a washing additive delivery device according to an embodiment of the present invention;

[0031] Figure 3 Schematic diagram of the structure of the washing additive dispensing device according to the embodiment of the present invention from different viewing angles;

[0032] Figures 4 to 5 Schematic diagram of the exploded structure of the washing additive delivery device according to the embodiment of the present invention from different viewing angles;

[0033] Figure 6 is a front structural schematic diagram of a washing additive dispensing device according to an embodiment of the present invention;

[0034] Figure 7 In the embodiment of the present invention Figure 6 Schematic diagram of the AA cross-section structure;

[0035] Figure 8 In the embodiment of the present invention Figure 6 Schematic diagram of BB cross-section structure;

[0036] Fig. 9 In the embodiment of the present invention Figure 6 Schematic diagram of CC cross-section structure;

[0037] Fig.10 is a structural schematic diagram of a linkage switching valve in an embodiment of the present invention;

[0038] Fig.11 Schematic diagram of the cross-sectional structure of the linkage switching valve in an embodiment of the present invention.

[0039] The main components in the figure are described as follows:

[0040] 100, dispensing device; 200, control disc seat; 1, water box; 2, detergent box; 3, dispensing box; 4, negative pressure suction structure; 5, water inlet valve; 6, water inlet pipe; 7, water suction pump; 8, linkage switching valve; 80, shell; 81, first channel; 811, first inlet; 812, first outlet; 82, second channel; 821, second inlet; 822, second outlet; 83, third outflow channel; 831, third outlet; 84, connecting channel; 85, valve plug; 851, first valve plug; 852, second valve plug; 853, hemispherical surface; 854, plane; 855, inlet sealing ring; 856, outlet sealing ring; 857, annular convex rib; 858, cylindrical stop convex; 86, slideway; 861, strip convex rib; 10, main water inlet waterway; 11, water storage tank; 12, upper cover; 13, Water delivery channel; 14, water outlet; 15, water outlet; 16, water inlet; 17, overflow; 131, first delivery water channel; 132, second delivery water channel; 133, third delivery water channel; 1311, first spray chamber; 1312, first spray outlet; 1321, second spray chamber; 1322, second spray outlet; 21, liquid storage chamber; 211, first liquid storage chamber; 212, second liquid storage chamber; 3 1. Delivery chamber; 32. Siphon column; 311. First delivery chamber; 312. Second delivery chamber; 41. First negative pressure suction structure; 42. Second negative pressure suction structure; 43. Negative pressure port; 411. First negative pressure port; 421. Second negative pressure port; 51. First water inlet valve; 52. Second water inlet valve; 53. Third water inlet valve; 71. Inlet; 72. Outlet; 73. Secondary water inlet; 74. Pump chamber.

[0041] 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

[0042] 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.

[0043] 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.

[0044] like Fig.10 and Fig.11 As shown, the embodiment of the present invention introduces a linkage switching valve 8, which includes: two channels, a first channel 81 and a second channel 82, for different water inflows respectively; the first channel 81 and the second channel 82 are connected; the two channels are respectively provided with valve plugs 85 that can be impacted by the water flow passing through the channels and move toward the inlet or outlet direction;

[0045] When water enters the first inlet 811 of the first channel 81, the inlet water flow moves the first valve plug 851 in the first channel 81 toward the first outlet 812 to close the first outlet 812 of the first channel 81, and the second valve plug 852 in the second channel 82 moves toward the second inlet 821 to close the second inlet 821 of the second channel 82, and the inlet water flow flows out from the second outlet 822 of the second channel 82;

[0046] When water enters the second inlet 821 of the second channel 82, the incoming water flow moves the second valve plug 852 in the second channel 82 toward the second outlet 822 to close the second outlet 822 of the second channel 82, and the first valve plug 851 in the first channel 81 moves toward the first inlet 811 to close the first inlet 811 of the first channel 81, and the incoming water flow flows out from the first outlet 812 of the first channel 81.

[0047] By setting the linkage switching valve as above, the purpose of synchronously closing the inlet of another channel for water supply to different channels is achieved, thereby achieving the effect of linkage opening and closing control of two different channels using different water inlet flows.

[0048] In the embodiment of the present invention, the linkage switching valve 8 also includes a third outflow channel 83, and the inlet of the third outflow channel 83 is connected to the connecting point of the first channel 81 and the second channel 82; when water enters the first channel 81 and the second channel 82 at the same time, the incoming water flow moves the first valve plug 851 in the first channel 81 toward the first outlet 812 and the second valve plug 852 in the second channel 82 toward the second outlet 822, thereby closing the first outlet 812 of the first channel 81 and the second outlet 822 of the second channel 82, and the incoming water flow flows out from the third outlet 831 of the third outflow channel 83.

[0049] Through the above arrangement, the purpose of switching the water outlets when supplying water to different channels at the same time is achieved, thereby achieving the effect of correspondingly switching and adjusting the working mode of the valve body using any one or a combination of water supply modes.

[0050] In the embodiment of the present invention, the linkage switching valve 8 comprises a cylindrical housing 80; a first channel 81 and a second channel 82 extending in parallel along the axial direction are provided in the cylindrical housing 80, and a third outflow channel 83 extending in parallel is provided between the first channel 81 and the second channel 82; a first inlet 811 of the first channel 81 and a second inlet 821 of the second channel 82 are located on the same side of the cylindrical housing 80, and a first outlet 812 of the first channel 81, a second outlet 822 of the second channel 82, and a third outlet 831 of the third outflow channel 83 are all located on the other side of the cylindrical housing 80. The middle portions of the first channel 81 and the second channel 82 are connected to the two ends of the connecting channel 84 in a one-to-one correspondence, and the middle portion of the connecting channel 84 is connected to the inlet of the third outflow channel 83; preferably, the extending direction of the connecting channel 84 is perpendicular to the axial direction of the cylindrical housing 80.

[0051] In the embodiment of the present invention, the first channel 81 and the second channel 82 of the linkage switching valve 8 are respectively provided with valve plugs 85 that can move freely along the channels. In order to reduce the occurrence of the valve plug 85 being stuck, the following settings can be made: elastic parts are respectively provided in the two channels, and the two ends of the elastic parts are respectively connected to the shell 80 of the linkage switching valve 8 and the valve plug 85 in the corresponding channel, so as to keep the valve plug 85 in the connecting channel 84 and the corresponding channel under normal conditions; the elastic part can be an elastic structure of any type in the prior art, for example: the elastic part is a spring, the spring extends axially along the channel, one end of the spring is connected to the valve plug 85, and the other end is connected to the inner wall of the channel, so as to utilize the elastic force provided by the spring to keep the valve plug 85 in the normal position. Preferably, when the valve plug 85 is in the normal position, the outlet of the channel where the valve plug 85 is located is connected to the connecting channel 84, so that the water flow entering the channel through the connecting channel 84 can directly drive the valve plug 85 to move toward the inlet direction, thereby avoiding the valve plug 85 from getting stuck; further preferably, in order to further avoid the valve plug 85 from getting stuck and being unable to smoothly flow out the water introduced into another channel, the following settings can be made: when the valve plug 85 is in the normal position, the inlet of the channel where the valve plug 85 is located is disconnected from the connecting channel 84, so as to ensure that the water flow entering the connecting channel 84 will not flow back toward the channel inlet direction.

[0052] In the embodiment of the present invention, the axial height of the valve plug 85 is smaller than the distance between the passage where the valve plug 85 is located and the connecting passage 84 and the passage inlet, and the axial height of the valve plug 85 is smaller than the distance between the passage where the valve plug 85 is located and the connecting passage 84 and the passage outlet. Through the above arrangement, when the valve plug 85 is at the closed passage inlet position, the outlet of the passage where the valve plug 85 is located is connected with the connecting passage 84; and when the valve plug 85 is at the closed passage outlet position, the inlet of the passage where the valve plug 85 is located is connected with the connecting passage 84, thereby achieving the purpose of the water flow in the linkage switching valve 8 flowing out smoothly.

[0053] In the embodiment of the present invention, slideways 86 arranged along the extension direction of the channels are respectively provided in the two channels, and a sliding part corresponding to the slideway is provided on the outer wall of the valve plug 85, which is used to limit the valve plug 85 to move only along the extension direction of the channel 86, so as to ensure that the valve plug 85 can only slide along the axial direction of the channel and cannot produce the effect of rotating around the axial direction. Preferably, a plurality of strip convex ribs 861 radially protruding inwardly arranged and spaced are provided on the inner wall of the channel, and the strip convex ribs 861 all extend along the axial direction of the channel, and the outer peripheral wall of the valve plug 85 is provided with a card groove correspondingly inserted into the strip convex rib, so that the valve plug 85 can only move axially under the guidance of the card groove and the strip convex rib 861. Further preferably, in order to prevent the valve plug 85 from sliding out of the channel, a radially protruding stopper is provided at one end of the strip convex rib 861 at the entrance of the channel, and the radial height of the stopper is greater than the radial dimension of the card groove, which is used to limit the valve plug 85 from sliding out of the channel from the entrance of the channel.

[0054] In the embodiment of the present invention, the inlets of the two channels are in at least partially detachable contact with one end face of the valve plug 85 facing the inlet, and the detachable contact is provided with at least one circle of inlet sealing ring 855, which is provided on the inner wall of the inlet of the channel or the end face of the valve plug 85 facing the inlet; the outlets of the two channels are in at least partially detachable contact with the end face of the valve plug 85 facing the outlet, and the detachable contact is provided with at least one circle of outlet sealing ring 856, which is provided on the inner wall of the outlet of the channel or the end face of the valve plug 85 facing the outlet. By providing sealing rings at the corresponding contact points between the valve plug and the inlet and outlet of the channel, the corresponding inlet and outlet of the channel can be correspondingly closed when the valve plug moves to the inlet and outlet of the channel.

[0055] Preferably, the end of the valve plug 85 facing the channel inlet is a hemispherical surface 853, and the inner circumferential wall at the channel inlet is provided with an inlet sealing ring 855 radially protruding toward the inside of the channel, and the inner circumferential radial dimension of the inlet sealing ring 855 is smaller than the maximum radial dimension of the hemispherical surface 853, so as to achieve the purpose of correspondingly closing the channel inlet after the valve plug 85 moves; at the same time, the end of the valve plug 85 facing the channel outlet is a plane 854, and a circle of annular convex ribs 857 are provided at the channel outlet, and the inner circumferential radial dimension of the annular convex ribs 857 is smaller than the radial dimension of the valve plug 85, so that the plane 854 of the valve plug 85 and the annular convex ribs 857 can be correspondingly fitted and contacted, and a circle of outlet sealing rings 856 protruding toward the channel outlet is coaxially provided on the plane 854 of the valve plug 85, and the radial dimension of the outlet sealing ring 856 is larger than the inner circumferential radial dimension of the annular convex ribs 857, so as to achieve the purpose of correspondingly closing the channel outlet after the valve plug 85 moves. By setting different shapes at both ends of the valve plug, the occurrence of the valve plug inversion can be avoided.

[0056] Further preferably, in order to improve the sealing performance of the valve plug 85, the annular convex rib 857 provided at the channel outlet is set to an annular spherical surface on the side facing the inside of the channel, and the annular spherical surface is a part of a spherical surface, so that the annular spherical surface can use the gradually concave curved surface to squeeze and seal the outlet sealing ring 856 protruding outward; the inner radial dimension of the annular spherical surface is smaller than the outer radial dimension of the outlet sealing ring 856, so as to ensure that at least part of the outlet sealing ring 856 is in relative contact with the annular spherical surface, so as to achieve effective sealing between the valve plug 85 and the channel outlet. At the same time, in order to prevent the valve plug 85 from getting stuck at the outlet, a cylindrical stopper 858 protruding toward the outlet direction can be set at the center of the plane 854 of the valve plug 85, and the axial height of the cylindrical stopper 858 is smaller than the height of the annular spherical surface, and the outer radial dimension is larger than the inner radial dimension of the annular convex rib 857.

[0057] like Figures 2 to 11 As shown, an embodiment of the present invention also introduces a washing additive delivery device, which includes: a first delivery waterway 131, used to extract the first washing additive stored in the first liquid storage chamber 211; a second delivery waterway 132, used to extract the second washing additive stored in the second liquid storage chamber 212; a main water inlet waterway 10, which delivers a washing additive mixture and / or inlet water to the outside; having the above-mentioned linkage switching valve 8, the outlet of the first delivery waterway 131 and the outlet of the second delivery waterway 132 are connected to the first inlet 811 of the first channel 81 and the second inlet 821 of the second channel 82 of the linkage switching valve 8 in a one-to-one correspondence, and the outlets 81 and 82 of the two channels of the linkage switching valve 8 are connected to the main water inlet waterway 10.

[0058] In the embodiment of the present invention, a first liquid pumping structure is provided on the first water channel 131, and a second liquid pumping structure is provided on the second water channel 132. The liquid pumping structure can be any existing structure that can extract the washing additives contained in the corresponding liquid storage chamber 21 into the water channel 13, such as: a negative pressure suction structure composed of a Venturi tube, a suction pump, etc.

[0059] In the embodiment of the present invention, the description is made by taking the liquid extraction structure as a negative pressure suction structure as an example, but it is not limited to the above structure: the first injection waterway 131 and the second injection waterway 132 are respectively provided with negative pressure suction structures, and the negative pressure ports 43 of the two negative pressure suction structures are connected. When the inflow water flows through any injection waterway 13, negative pressure is formed in the other injection waterway 13 to extract the washing additives in the corresponding liquid storage chamber 21. By arranging a linkage switching valve at the outlets of the two injection waterways equipped with negative pressure suction structures, the purpose of linkage closing the outlet of the other injection waterway when water enters any injection waterway is achieved, thereby achieving a significant technical progress in forming a sealed chamber in the other injection waterway and improving the extraction rate of the washing additives in the connected liquid storage chambers by the injection waterway.

[0060] Preferably, in the embodiment of the present invention, the third outlet 831 of the third outflow channel 83 of the linkage switching valve 8 is connected to the main water inlet waterway 10, so that the three outlets 812, 822, and 831 of the linkage switching valve 8 are all connected to the main water inlet waterway 10, thereby achieving the effect of introducing any one or a combination of the inlet water flows in the two delivery waterways 13 into the main water inlet waterway 10 and delivering the washing additive mixture or water supply into the washing machine barrel.

[0061] In an embodiment of the present invention, the control method of the above-mentioned delivery device includes the following steps:

[0062] When the first detergent additive extracted into the first delivery waterway is delivered, water is fed into the first delivery waterway / the second delivery waterway, and the inflow water flows into the first channel of the linkage switching valve, the first valve plug in the first channel corresponds to closing the first outlet of the first channel, and the valve plug in the second channel corresponds to closing the second inlet of the second channel, and the first detergent additive flows into the main water inlet waterway from the second outlet of the second channel along with the inflow water flow and is delivered outward;

[0063] When the second washing additive that has been extracted into the second delivery waterway is delivered, water is fed into the second delivery waterway, and the incoming water flow enters the second channel of the linkage switching valve, the second valve plug in the second channel corresponds to closing the second outlet of the second channel, and the first valve plug in the first channel corresponds to closing the first inlet of the first channel, and the second washing additive flows into the main water inlet waterway from the first outlet of the first channel together with the incoming water flow and is delivered outward.

[0064] In an embodiment of the present invention, the control method of the above-mentioned delivery device includes the following steps:

[0065] When the first detergent additive is added,

[0066] First, water is introduced into the second injection water channel, and the inlet water flow closes the second outlet of the second channel of the linkage switching valve and the first inlet of the first channel, and the inlet water flows through the first outlet of the first channel and the third outlet of the third outflow channel to the main inlet water channel to supply water to the outside; at the same time, the outlet of the first injection water channel is closed, and a sealed space is formed in the first injection water channel, and the inlet water flow flowing through the second injection water channel generates a negative pressure at the second negative pressure suction structure, and the negative pressure is transmitted to the first injection water channel through the second negative pressure port of the second negative pressure suction structure, and the first washing additive stored in the first liquid storage chamber is sucked into the first injection water channel by the negative pressure in the first injection water channel;

[0067] Water is then introduced into the first and second water channels at the same time, the inflowing water flow closes the first outlet of the first channel and the second outlet of the second channel of the linkage switching valve, and opens the third outlet of the third outflow channel, and the first washing additive extracted from the first water channel is flushed into the main water inlet channel through the third outlet by the flowing water flow and is released outward.

[0068] When adding the second detergent additive,

[0069] First, water is introduced into the first injection water channel, and the inlet water flow closes the first outlet of the first channel of the linkage switching valve and the second inlet of the second channel, and the inlet water flows through the second outlet of the second channel and the third outlet of the third outflow channel to the main water inlet water channel to supply water to the outside; at the same time, the outlet of the second injection water channel is closed, and a sealed space is formed in the second injection water channel, and the inlet water flow flowing through the first injection water channel generates a negative pressure at the first negative pressure suction structure, and the negative pressure is transmitted to the second injection water channel through the first negative pressure port of the first negative pressure suction structure, and the negative pressure in the second injection water channel is used to draw the second washing additive stored in the second liquid storage chamber into the second injection water channel;

[0070] Water is then introduced into the first and second water channels at the same time, the inflowing water flow closes the first outlet of the first channel and the second outlet of the second channel of the linkage switching valve, and opens the third outlet of the third outflow channel, and the second washing additive extracted from the second water channel is flushed into the main water inlet channel through the third outlet by the flowing water flow and released outward.

[0071] In the embodiment of the present invention, the specific structure of the washing additive delivery device may be as follows:

[0072] like Figures 1 to 9 As shown, an embodiment of the present invention introduces a detergent dispensing device, which is installed on a washing machine. The detergent dispensing device 100 includes a water box 1 and a detergent box 2 installed in the water box 1. The detergent box 2 can be pulled outward to open and pushed inward to close by hand. The detergent box 2 is provided with a liquid storage chamber 21 for containing detergents, softeners and other washing additives; the liquid storage chamber 21 can be composed of an independent chamber and detachably installed on the detergent box 2, or it can be a liquid storage tank integrated on the detergent box 2 for containing washing additives; the water box 1 is also provided with an automatic dispensing module for extracting the washing additives in the liquid storage chamber 21 into the water storage tank 11 of the water box 1; the water box 1 is also connected to a water inlet pipe, the water inlet pipe is fed into the water storage tank 11, and the extracted washing additives are mixed with the inlet water flow to form a washing additive mixed liquid; the bottom of the water storage tank 11 is provided with a water outlet 14, so that the washing additive mixed liquid and the inlet water flow can flow out of the water box 1 through the water outlet 14 and enter the washing tub of the washing machine.

[0073] In the embodiment of the present invention, the automatic delivery module may be any existing structure; in the embodiment of the present invention, the automatic delivery module is configured as follows, but the protection scope of the present invention is not limited to the following configuration:

[0074] A water channel is integrated on the water box 1, and the water channel includes a first water channel 131 and a second water channel 132; the water inlet ends of the first water channel 131 and the second water channel 132 are connected to the water inlet pipe via an inlet valve 5, which is used to control the water flow of the washing machine to be turned on and off and to be introduced into the water channel of the dispensing device separately or simultaneously. A first negative pressure suction structure 41 is provided on the first injection waterway 131, and a second negative pressure suction structure 42 is provided on the second injection waterway 132. The negative pressure suction structure 4 can generate negative pressure at the negative pressure port by using the water flow passing through the injection waterway; the negative pressure ports 43 of the two negative pressure suction structures 4 are connected, and the first injection waterway 131 is connected to the first liquid storage chamber 211, and the second injection waterway 132 is connected to the second liquid storage chamber 212 respectively, and the negative pressure of the negative pressure suction structure 4 can act on the other injection waterway to extract the washing additive stored in the liquid storage chamber 21 connected to the injection waterway; and then water is simultaneously introduced into the two injection waterways, and the incoming water flow simultaneously flows through the first injection waterway and the second injection waterway, so that the washing additive extracted in the previous step can be mixed with the incoming water flow to form a washing additive mixed liquid.

[0075] In the embodiment of the present invention, the negative pressure suction structure 4 can be any existing structure that uses negative pressure to extract detergent additives; for example: a Venturi tube, which is a straight tube, and is divided into a contracting section, a straight tube section, and an expanding section from the water inlet end to the water outlet end; the straight tube section is provided with a negative pressure port 43 that is connected to the outside, so that the water flowing through the Venturi tube forms a negative pressure at the negative pressure port 43, so as to achieve the effect of extracting the detergent additives stored in the liquid storage chamber 21 connected to the negative pressure port 43.

[0076] In the embodiment of the present invention, in order to realize the corresponding extraction of the washing additive by using the two injection water channels 13 that can be switched, so as to improve the efficiency of the injection of the washing additive after extraction, the following settings can be made:

[0077] The first negative pressure port 411 of the first negative pressure suction structure 41 and the negative pressure port 421 of the second negative pressure suction structure 42 are directly connected through a pipeline; the water inlet end of the first water path 131 and the water inlet end of the second water path 132 are respectively connected to the water inlet pipe 6 through the opposite water inlet valves 5; the water outlet end of the first water path 131 and the water outlet end of the second water path 132 are both connected to the water storage tank 11 of the delivery device, so that the washing additive mixture is discharged through the water outlet 14 of the water storage tank 11. Outward release; the first negative pressure suction structure 41 is connected in series with the first release water channel 131 near the water inlet end, and the second negative pressure suction structure 42 is connected in series with the second release water channel 132 near the water inlet end; the first release water channel 131 is connected with the first liquid storage chamber 211 near the water outlet end, and the first liquid storage chamber 211 stores the first washing additive; the second release water channel 132 is connected with the second liquid storage chamber 212 near the water outlet end, and the second liquid storage chamber 212 stores the second washing additive.

[0078] In the embodiment of the present invention, the water box 1 includes a water storage tank 11, which is in the shape of a groove with an opening at the front side and an open top; the top opening of the water storage tank 11 is covered with an upper cover 12, which is an internal hollow structure, and the internal hollow part constitutes a water channel integrated on the upper cover 12, and the water channel includes at least one delivery water channel 13; at least the lower part of the water storage tank 11 constitutes a water outlet 15 for delivering the mixed liquid of the detergent additive into the washing tub of the washing machine, and the upper part constitutes an installation space for the detergent box 2 to be pulled out and assembled, and the liquid storage chamber 21 is arranged in the detergent box 2. Preferably, the detergent box 2 is composed of an upper and lower part that are mutually buckled, and the internal hollow part constitutes at least one liquid storage chamber 21 for holding different detergent additives; an injection port for users to inject detergent additives is opened in the upper part of the detergent box 2, and a cover that can be opened and closed can be provided at the injection port.

[0079] like Figures 1 to 9 As shown, in the embodiment of the present invention, a conducting structure is provided between the water box 1 and the detergent box 2, which is used to connect the liquid storage chamber 21 with the water supply path 13 in a switchable manner; the conducting structure can adopt any structure in the prior art; the conducting structure in the embodiment of the present invention is specifically as follows: a first liquid guide tube 160 is provided on the liquid storage chamber 21, and the liquid inlet end of the first liquid guide tube 160 extends into the bottom of the liquid storage chamber 21, and the liquid outlet end is opened on the side of the water box 1 pushed into the liquid storage chamber 21; the liquid inlet end of the first liquid guide tube 160 is at the lowest liquid level of the liquid storage chamber 21. The water box 1 is provided with a second liquid guide tube 170, the liquid outlet end of the second liquid guide tube 170 is connected to the water delivery channel 13 provided on the upper cover 12 of the water box 1, and the liquid inlet end is provided on the rear side wall of the water box 1, facing the inside of the water box 1, and can be coaxially plugged and connected with the liquid outlet end of the first liquid guide tube 160; after the detergent box 2 is pushed into the water box 1, the liquid outlet end of the first liquid guide tube 160 is plugged and connected with the liquid inlet end of the second liquid guide tube 170, so that the first liquid guide tube 160 and the second liquid guide tube 170 are connected.

[0080] like Figure 8 As shown, in the embodiment of the present invention, the first liquid guide tube 160 is a pipeline extending horizontally from front to back, the front end of the horizontal pipeline extending into the liquid storage cavity 21 is the liquid inlet end, the liquid inlet end is connected to the bottom of the liquid storage cavity 21 and is lower than the lowest liquid level of the liquid storage cavity 21, and the rear end extends out of the liquid storage cavity 21 to form the liquid outlet end of the first liquid guide tube 160. .

[0081] In the embodiment of the present invention, the liquid outlet end of the first liquid guiding tube 160 is correspondingly inserted into the liquid inlet end of the second liquid guiding tube 170, and the outer wall of the first liquid guiding tube 160 is in contact with the inner wall of the second liquid guiding tube 170 and is provided with at least one circle of sealing ring, so that the two liquid guiding tubes are sealed after being plugged in to prevent the additive from leaking from the plugging gap; at the same time, in order to prevent the detergent from leaking from the first liquid guiding tube 160 or the second liquid guiding tube 170 after the detergent box 2 is pulled out, a switch valve can be provided at the liquid outlet end of the first liquid guiding tube 160 and / or the liquid inlet end of the second liquid guiding tube 170, which is used to close the end of the corresponding liquid guiding tube after the detergent box 2 is pulled out, and to connect the two plugged liquid guiding tubes after the detergent box 2 is pushed in.

[0082] In the embodiment of the present invention, the water inlet valve 5 can be a control valve separately provided at the water inlet end of each water supply circuit 13, which can control the opening and closing of the corresponding water supply circuit 13. The water inlet end of the first water supply circuit 131 is connected to the first water inlet valve 51, the water inlet end of the second water supply circuit 132 is connected to the second water inlet valve 52, and the water inlet end of the third water supply circuit 133 is connected to the third water inlet valve 53. The inlet of each water inlet valve is connected to the water inlet 16 of the washing machine; it can also be a switching valve with one inlet and multiple outlets, each outlet is connected to the corresponding water supply circuit, and the valve plug of the water inlet valve 5 is used to control the connection between the water inlet 16 and each outlet selectively or simultaneously; the inlet of the water inlet valve 5 constitutes the water inlet 16 of the washing machine, and is connected to the tap water source through a pipeline.

[0083] In the embodiment of the present invention, a detergent box 2 that can be pulled outward is installed in the water box 1, and a plurality of liquid storage chambers 21 are installed on the detergent box 2, and each liquid storage chamber 21 is used to store different types of laundry detergent additives; the laundry additives include: detergents, softeners, disinfectants, etc.; each liquid storage chamber 21 is connected to each water channel 13 in a one-to-one correspondence; wherein, detergent is stored in the first liquid storage chamber 211, and the first liquid storage chamber 211 is connected to the first water channel 131.

[0084] In the embodiment of the present invention, in order to improve the mixing uniformity of the extracted washing additive and the incoming water, a delivery chamber 31 is also provided on the delivery device, so that the outlet of the delivery waterway 13 is connected to the delivery chamber 31, so that the washing additive and the incoming water flow flow into the delivery chamber 31 for full mixing, and then flow into the water outlet 15 of the water storage tank 11 and flow out from the water outlet 14, thereby greatly improving the mixing uniformity of the washing additive. In the embodiment of the present invention, a delivery box 3 that can be pulled outward is installed in the water box 1, and the delivery box 3 has at least one delivery chamber 31, the delivery chamber 31 is open at the top and has an opening at the bottom, and the opening directly constitutes the water outlet 14 of the water box 1, or the opening is connected to the water outlet 14 of the water box 1 through the water outlet 15 at the bottom of the water box 1; a siphon column 32 is provided at the bottom opening of the delivery chamber 31, which is used to prevent the unmixed additive from flowing out and allow the mixed additive mixture to flow out, thereby improving the mixing uniformity of the extracted washing additive and the incoming water flow. The siphon column 32 can be any siphon structure in the prior art that can automatically trigger the siphon drainage effect when the water level reaches a certain height. For example, the specific structure of the siphon column 32 is as follows: Fig. 9 As shown, an inner sleeve extending vertically upward is provided at the opening, an outer sleeve is coaxially sleeved outside the inner sleeve, a top of the outer sleeve is provided with a closure, a gap is provided between the lower end and the bottom wall of the delivery chamber 31, the lower end of the inner sleeve is connected to the water outlet 15 below the delivery box 3, and a gap is provided between the upper end and the closed top of the outer sleeve to connect the gap between the inner sleeve and the inner and outer sleeves; the gap between the inner sleeve and the outer sleeve constitutes a siphon flow channel that connects the delivery chamber and the water outlet; using the siphon column 32 of the above structure, when the liquid level in the delivery chamber 31 is higher than the height of the inner sleeve, a siphon effect can be triggered to deliver the washing additive mixture in the delivery chamber 31 outward. At the same time, in order to ensure that the inner sleeve and the outer sleeve of the siphon column 32 can be spaced apart, a plurality of support ribs can be arranged in the gap between the inner and outer sleeves, each support rib does not cover any water flow section of the siphon flow channel, and part of the support rib abuts against the inner wall of the outer sleeve and part of the support rib abuts against the outer wall of the inner sleeve, so that the inner and outer sleeves can be assembled with spaced support.

[0085] At the same time, a spray chamber is provided on the upper cover 12 in the upper area of ​​the delivery chamber 31, and the spray chamber is connected to the water outlet end of the delivery water channel 13. A plurality of spray ports are arranged on the bottom wall of the spray chamber to evenly spray the incoming water flow and the delivered washing additives into the delivery chamber through each spray port.

[0086] In the embodiment of the present invention, a dispensing system in which two paths for dispensing detergent and softener are provided on the dispensing device 100 is taken as an example to describe:

[0087] like Figures 1 to 9As shown, a detergent box 2 is installed in a water box 1 of the dispensing device 100, and two liquid storage chambers 21 are installed in the detergent box. The first liquid storage chamber 211 is used to store detergent, and the second liquid storage chamber 212 is used to store softener. The water box 1 is provided with a first dispensing waterway 131 and a second dispensing waterway 132. The water inlet ends of the two dispensing waterways are respectively connected to a water inlet valve 5, and the inlet of each water inlet valve 5 is connected to the tap water source of the washing machine.

[0088] The outlet ends of the first water channel 131 and the second water channel 132 are both connected to the first spray chamber 1311. A plurality of first spray ports 1312 are provided at the bottom of the first spray chamber 1311. Each first spray port 1312 is located above the first chamber 311, and is used to connect the outlet of the first water channel 131 with the first chamber 311, so that the extracted detergent enters the first chamber 311 through the first water channel 131, and the extracted softener also enters the first chamber 311 through the second water channel 132.

[0089] The bottom wall of the first delivery chamber 311 is provided with an opening, and a siphon column 32 is provided at the opening, so that when the detergent and water, or the softener and water entering the first delivery chamber 311 are mixed to a liquid level exceeding the triggering liquid level of the siphon column 32, the siphon effect is triggered, and the mixed liquid in the delivery chamber flows out of the first delivery chamber 311; the opening provided on the bottom wall of the first delivery chamber 311 is connected to the water outlet 15 provided at the bottom of the water storage tank 11 of the water box 1 below, and the water outlet 14 is provided at the lowest point of the bottom wall of the water outlet 15, so that the mixed liquid flows out from the water outlet 14 of the water box 1 through the water outlet 15 of the water storage tank 11 and is delivered into the washing drum of the washing machine.

[0090] In the embodiment of the present invention, a detergent box 2 and a delivery box 3 that can be pulled out are installed in the water box 1, and at least one liquid storage cavity 21 is provided in the detergent box 2, and at least one delivery cavity 31 is provided in the delivery box 3; the detergent box 2 and the delivery box 3 are installed in the water tank 11 in a staggered arrangement on the left and right, and can be pulled out from the front side of the water tank 11 respectively. In the embodiment of the present invention, the first delivery chamber 311 and the second delivery chamber 312 are provided on the delivery box as an example for explanation: the first delivery chamber 311 is for manual addition of detergent, and the second delivery chamber 312 is for manual addition of softener; the water box 1 is also integrated with a third delivery water channel 133, and the water outlet end of the third delivery water channel 133 is connected to the second spray chamber 1321, and the bottom wall of the second spray chamber 1321 is provided with a plurality of second spray ports 1322 located on the upper side of the second delivery chamber 312 and opened into the second delivery chamber 312; the bottom wall of the first spray chamber 1311 is provided with a plurality of first spray ports 1312 located on the upper side of the first delivery chamber 311 and opened into the first delivery chamber 311.

[0091] In the embodiment of the present invention, a liquid level sensor is provided in the delivery cavity 31 of the delivery box 3 to detect the amount of additive in the delivery cavity 31. The liquid level sensor can be any existing structure, but must be able to detect the liquid level and / or liquid amount in the delivery cavity.

[0092] In the embodiment of the present invention, a water inlet 16 is provided on the water box 1, and the water inlet 16 constitutes the water inlet end of the water delivery channel 13 integrated with the water box 1. The water inlet 16 is respectively connected to the inlet of the water inlet valve 5 installed in a one-to-one correspondence with the water inlet end of each delivery water channel 13. The inlet of the water inlet valve 5 is connected to the water inlet source of the washing machine, and the water inlet source of the washing machine is generally the tap of the user's home; the water inlet valve 5 can control the on-off between the water inlet 16 and each delivery water channel 13, and is used to control the on-off of the tap water supply to the water box 1.

[0093] In the daily life of washing machine users, a lot of domestic wastewater may be generated, and some domestic wastewater can be reused by washing machines, such as rice washing water, vegetable washing water, mopping water, etc. The above domestic wastewater is generally referred to as secondary water, which can be used for washing, rinsing, etc. in washing machines. In order to realize the utilization of secondary water by washing machines, users generally collect the above secondary water into a water container, and then suck it into the water inlet pipe of the washing machine through a pipe equipped with a water suction pump, so that the washing machine can reuse the secondary water.

[0094] like Figures 1 to 9 As shown, in the embodiment of the present invention, a water suction pump 7 is installed on the washing machine, and the water suction pump 7 is installed on the delivery device 100. The water suction pump 7 is connected with the first delivery water channel 131 and the second delivery water channel 132 of the delivery device 100, so that the water suction pump 7 can directly suck the secondary water into the washing machine washing drum through the delivery device 100, thereby achieving the effect of effectively utilizing the secondary water.

[0095] By connecting the water suction pump in series to the first water channel or the second water channel of the delivery device, the delivery device can be controlled to supply secondary water through the water suction pump and tap water through the water inlet pipe to carry out water intake, thereby achieving a significant technical progress in integrating two different water supply modes in the delivery device; at the same time, the tap water supplied by the water inlet pipe can be effectively utilized to fill the pump cavity of the water suction pump, thereby achieving a significant technical progress in automatically controlling the water suction pump to meet the opening demand.

[0096] like Figures 1 to 9As shown, the embodiment of the present invention introduces a washing machine delivery device 100 integrated with an external water suction pump, including a water box 1, provided with a water storage tank 11 for supplying water to a washing tub of the washing machine; a liquid storage chamber 21 installed in the water box 1, and storing clothing treatment agent inside; a negative pressure suction structure installed on the water box 1, a negative pressure port 43 of the negative pressure suction structure 4 is connected to the liquid storage chamber 21, and the negative pressure suction structure 4 is connected in series to a first delivery waterway 131 or a second delivery waterway 132 provided on the water box 1, so as to draw the clothing treatment agent in the liquid storage chamber 21 into the delivery waterway 13 integrated on the water box 1, and then enter the water storage tank 11 along with the inlet water flow passing through the delivery waterway 13, and the clothing treatment agent in the water storage tank 11 is sucked into the delivery waterway 13. After being mixed to form a washing additive mixed liquid, it enters the washing tub of the washing machine through the water outlet 14 of the water box 1, thereby realizing the function of putting washing additives or filling water into the washing machine; the water outlet 14 of the putting device is connected to the putting water path 13, the water inlet 16 is connected to the water inlet valve 5, and the water inlet 16 is controllably connected to the tap water faucet of the washing machine; the water suction pump 7 is connected to the first putting water path 131 and / or the second putting water path 132, and is provided with a secondary water inlet 73 that can be opened and closed and is connected to an external secondary water source, which is used to introduce the washing machine tap water supplied by the water inlet valve 5 or the secondary water supplied by the self-priming water pump 7 into the water storage tank 11. Thereby, the putting device can use tap water or secondary water to flush and put the washing additives put into the water inlet water path, thereby achieving the effect of putting the washing additives outward using different water inlet modes.

[0097] In the embodiment of the present invention, the water suction pump 7 is provided with an inlet 71 and an outlet 72, both of which are connected to the highest point of the pump chamber 74 of the water suction pump 7, so as to ensure that the pump chamber 74 of the water suction pump 7 is filled with water before flowing into the delivery waterway 13 of the delivery device 100; the secondary water inlet 73 is located at the top of the pump chamber 74 of the water suction pump 7 and is opened upward, and the secondary water inlet 73 is connected to the secondary water source through a pipeline provided with a one-way valve, and the one-way valve is used to ensure that the water flow in the pipeline only flows in the direction of the secondary water inlet 73. Preferably, in order to ensure the direction of the water flow in the water inlet pipe 6, a one-way valve is provided on the delivery waterway 13 upstream of the water suction pump 7, which is used to control the secondary water flowing into the pump chamber 74 to only flow out from the outlet 72 of the water suction pump 7 and prevent it from flowing back to the direction of the water inlet valve 5.

[0098] In the embodiment of the present invention, the water suction pump 7 is installed above the water box 1 and located on one side of the water box 1 to ensure that the water in the delivery waterway 13 of the delivery device 100 cannot flow back into the pump chamber 74 of the water suction pump 7. The water inlet valve 5 and the water suction pump 7 are both installed above the water box 1, respectively located on the opposite left and right sides of the water box 1, to prevent the water in the delivery waterway 13 of the delivery device 100 from flowing back toward the direction of the water inlet valve 5. Preferably, in order to further prevent the occurrence of water backflow in the delivery device, the inlet 71 and outlet 72 of the water suction pump 7 and the outlet of the water inlet valve 5 are all located above the top wall of the water box 1.

[0099] In the embodiment of the present invention, the integrated water circuit provided on the upper cover 12 of the water box 1 further includes a main water inlet circuit 10; the water inlet end of the main water inlet circuit 10 is respectively connected with the water inlet ends of the first delivery water circuit 131 and the second delivery water circuit 132, and the connection point between the main water inlet circuit 10 and the first delivery water circuit 131 is located between the first water inlet valve 51 and the first negative pressure suction structure 41, and the connection point between the main water inlet circuit 10 and the second delivery water circuit 132 is located between the second water inlet valve 52 and the second negative pressure suction structure 42. The water outlet end of the main water inlet circuit 10 is connected with the first spray chamber 1311; at the same time, in order to prevent the water in the main water inlet circuit 10 from flowing back into the delivery water circuit 13, one-way valves are respectively provided at the connection points between the first delivery water circuit 131 and the second delivery water circuit 132 and the main water inlet circuit 10 to prevent the water from flowing back.

[0100] The outlet ends of the first injection waterway 131 and the second injection waterway 132 are connected to the main water inlet waterway 10 through the above-mentioned linkage switching valve 8, so that the washing additive mixture formed in the injection waterway 13 can directly enter the main water inlet waterway 10 and flow from the first spray chamber 1311 to the first injection chamber 311 along with the inlet water flow, enter the water outlet 15 at the lower part of the water storage tank 11, and be injected into the washing machine tub through the water outlet 14. The first outlet, the second outlet, and the third outlet of the linkage switching valve 8 are all connected to the main water inlet waterway 10, the first inlet of the linkage switching valve is connected to the outlet end of the first injection waterway, and the second inlet is connected to the outlet end of the second injection waterway, so as to achieve the effect of respectively flowing the inlet water flow and the washing additive mixture of the two different injection waterways into the linkage switching valve 8.

[0101] At the same time, in order to prevent the water and washing additive mixture from entering the main water inlet waterway 10 from the first injection waterway 131 and the second injection waterway 132 too quickly, resulting in excessive water pressure in the main water inlet waterway 10, an overflow port 17 can be provided on the main water inlet waterway 10. The overflow port 17 directly connects the main water inlet waterway 10 provided on the upper cover 12 with the water storage tank 11. The overflow port 17 is provided on the bottom wall of the waterway near the place where the main water inlet waterway 10 is connected with the first injection waterway 131 and the second injection waterway 132.

[0102] The inlet 71 of the water suction pump 7 is connected to the main water inlet waterway 10, and the outlet 72 is connected to the first spray chamber 1311 via a connecting pipe, so that the water suction pump 7 is connected in parallel with the main water inlet waterway 10, so that the water flow of the dispensing device when dispensing detergent or rinse agent can flow through the water suction pump 7, so as to inject water into the water suction pump 7 and fill the pump chamber 74 of the water suction pump 7, thereby ensuring that the water suction pump 7 can directly absorb water after the dispensing is completed, and the secondary water is pumped into the dispensing device for use.

[0103] The embodiment of the present invention introduces a washing machine, which can be any existing clothing processing device that can process clothing, such as a drum washing machine, a pulsator washing machine, a washer-dryer, a drying machine, etc. In order to facilitate description, the embodiment of the present invention takes a pulsator washing machine as an example for discussion, but the present invention is not limited to a pulsator washing machine. Figure 1 As shown, in the embodiment of the present invention, the top of the washing machine body is a control panel seat 200, and a washing barrel with a vertically extending axis and a barrel opening on the top is provided in the body, the control panel seat 200 is located above the barrel opening of the washing barrel, and the above-mentioned detergent dispensing device 100 is installed on the control panel seat 200, and the water outlet 14 of the water box 1 of the detergent dispensing device 100 is opened toward the barrel opening of the washing barrel, so that the water flow of the washing machine, the detergent additives, etc. can be dispensed into the washing drum through the water outlet 14 of the dispensing device.

[0104] In an embodiment of the present invention, the control method of the washing machine includes the following steps:

[0105] When the first washing additive stored in the first liquid storage chamber is added,

[0106] First, water is introduced into the second injection water channel, and the first detergent additive is drawn into the first injection water channel by using the negative pressure generated by the water flow flowing through the inlet water; at the same time, the outlet end of the first injection water channel is closed by using the linkage switching valve and the inlet water flow, so that the negative pressure in the first injection water channel can extract the first detergent additive stored in the first liquid storage chamber with maximum efficiency;

[0107] Then water is introduced into the first and second water channels at the same time, and the first washing additive extracted from the first water channel is flushed into the water storage tank by the flowing water, and then is introduced into the washing machine drum.

[0108] When the second washing additive stored in the second liquid storage chamber is added,

[0109] First, water is introduced into the first delivery water channel, and the second detergent additive is drawn into the second delivery water channel by using the negative pressure generated by the water flow flowing through the inlet water; at the same time, the outlet end of the second delivery water channel is closed by using the linkage switching valve and the inlet water flow, so that the negative pressure in the second delivery water channel can extract the second detergent additive stored in the second liquid storage chamber with maximum efficiency;

[0110] Then water is introduced into the first and second water channels at the same time, and the second washing additive extracted from the second water channel is flushed into the water storage tank and then introduced into the washing machine drum by the flowing water.

[0111] When manually adding the first detergent additive into the first delivery chamber,

[0112] Water is simultaneously introduced into the first delivery water channel and the second delivery water channel, and the water enters the first delivery cavity through the first spray cavity, flushes the first washing additive manually added in the first delivery cavity into the water storage tank, and delivers it into the washing machine drum.

[0113] When the second washing additive manually added into the second delivery chamber is delivered,

[0114] Water is fed into the third water channel, and the water enters the second delivery chamber through the second spray chamber, and the second washing additive manually added in the second delivery chamber is flushed into the water storage tank and delivered into the washing machine barrel.

[0115] In the embodiment of the present invention, when the washing machine uses secondary water to fill water,

[0116] First, the water inlet valve is opened in the above manner, the water suction pump is closed, and the first detergent additive / the second detergent additive is added. When the addition is completed, the pump cavity of the water suction pump is filled with tap water;

[0117] Then close the water inlet valve and open the water suction pump. The water suction pump draws secondary water into the pump chamber through the secondary water inlet, and then flows into the water storage tank through the delivery water channel and the main water inlet water channel, thereby achieving the purpose of filling water into the washing machine barrel.

[0118] In the embodiment of the present invention, when the washing machine uses secondary water to fill water, it is necessary to ensure that the pump cavity of the water suction pump is filled with water; in order to ensure the above conditions, the control method of the washing machine also includes the following:

[0119] When the washing machine uses secondary water to fill the water,

[0120] First, open the water inlet valve and close the water suction pump. The water inlet pipe flows the tap water into the first and second delivery waterways. The water flowing through the first and second delivery waterways flows to the water storage tank. The water flowing through the delivery waterway will flow through the parallel-connected water suction pump until the pump cavity of the water suction pump is filled with tap water.

[0121] Then close the water inlet valve and open the water suction pump. The water suction pump draws the secondary water into the pump cavity through the secondary water inlet, and then flows into the water storage tank through the water inlet pipe and the pumping channel.

[0122] In the embodiment of the present invention, the control method of the washing machine further includes the following steps:

[0123] When the washing machine uses secondary water to fill water, the water inlet valve is first opened and the water suction pump is closed for a set time t1, and then the water inlet valve is closed and the water suction pump is opened. The water suction pump in this application needs to be filled with water in the pump cavity before it can start working. In this application, the water suction pump is directly connected in series to the water inlet pipe of the delivery device, so that when the delivery device normally takes in tap water, the tap water will flow through the pump cavity of the water suction pump, so that the pump cavity of the water suction pump is kept in a filled state under normal conditions, so that the water suction pump can start working directly after receiving the instruction, which greatly saves the time consumption of water intake; at the same time, before the water suction pump is started, in order to ensure that the water suction pump can be turned on and avoid the occurrence of the situation that the pump cavity of the water suction pump is not filled with water, the control method of this application, especially at the start time node of the secondary water inlet, first opens the water inlet valve, allows the tap water to flow through the water suction pump through the water inlet pipe and into the washing drum of the washing machine, and uses the flowing tap water to ensure that the pump cavity of the water suction pump is filled, thereby achieving the effect of automatically driving the water suction pump to start working.

[0124] In an embodiment of the present invention, the control method of the washing machine includes the following steps:

[0125] Obtaining the preset amount of the detergent additive dispensing device for this time and the amount of the detergent additive in the dispensing chamber;

[0126] According to the formula: difference dosage = preset dosage - additive dosage in the manual dosage module, the difference dosage is obtained;

[0127] Water is introduced into another water channel opposite to the selected delivery cavity, and the negative pressure generated by the water introduction is used to extract the difference amount of detergent additive from the liquid storage cavity into the selected delivery cavity;

[0128] Water is introduced into two water delivery channels at the same time, the detergent additives in the delivery chamber are mixed and then delivered outwardly.

[0129] Through the above settings, the automatic delivery module can be used to automatically replenish the detergent additives manually added by the user, which greatly improves the accuracy of the delivery of detergent additives; at the same time, two different delivery modules can be used to synchronously and accurately deliver detergent additives to the washing machine in coordination, which diversifies the functions of the delivery device and greatly improves the performance of the product.

[0130] In an embodiment of the present invention, the control method of the detergent dispensing device further includes:

[0131] Determine whether the amount of detergent additive in the dispensing chamber is greater than a preset dispensing amount;

[0132] If so, water is directly introduced into the two water channels of the water box to mix the detergent additives in the delivery cavity and then deliver them out;

[0133] If not, water is supplied to another water supply channel opposite to the selected delivery chamber, and the negative pressure generated by the water supply is used to extract the difference in the amount of detergent additive from the liquid storage chamber into the selected delivery chamber, and then water is supplied to the water box through the two delivery water channels at the same time to discharge the detergent additive in the delivery chamber outward.

[0134] Thereby, it is avoided that there is an excessive amount of detergent additive in the dispensing chamber, and the detergent additive is still drawn out from the liquid storage chamber for dispensing, which greatly improves the accuracy of the detergent additive dispensing amount and effectively avoids the occurrence of excessive detergent additive being accidentally dosed, resulting in waste of detergent additives and poor washing effect.

[0135] In an embodiment of the present invention, the control method of the detergent dispensing device further includes:

[0136] Determine the type of detergent additives dispensed by the detergent additive dispensing device this time;

[0137] Detecting and determining the amount of detergent additive in the delivery chamber corresponding to the type of detergent additive;

[0138] According to the formula: difference dosage = preset dosage - additive dosage in the manual dosage module, the difference dosage is obtained;

[0139] Controlling water inflow to another dispensing waterway that is not connected to the determined type of detergent additive, and pumping the determined type of detergent additive in the corresponding liquid storage chamber to the corresponding dispensing waterway through a pump until the amount of the detergent additive pumped reaches the difference dispensing amount;

[0140] Then water is simultaneously introduced into the two delivery water channels, and the inflow water and the washing additive flow into the corresponding delivery chamber and mix to form a washing additive mixture, which is then delivered into the washing drum of the washing machine through the water box outlet.

[0141] In the embodiment of the present invention, the dispensing device 100 having two groups of dispensing chambers and two groups of dispensing water channels and liquid storage chambers for dispensing detergent and softener is taken as an example to explain:

[0142] When the dispensing device dispenses detergent, the specific working mode is as follows:

[0143] Step S111, detecting the liquid level in the first delivery chamber to determine whether the detected value is less than a preset delivery amount; if so, executing step S112; if not, executing step S114;

[0144] Step S112, according to the formula: difference delivery amount = preset delivery amount - detection value, the difference delivery amount is obtained;

[0145] Step S113, water is introduced into the second water channel, and the detergent contained in the first liquid storage chamber is pumped into the first water channel until the extracted detergent reaches the difference amount, and then step S114 is executed;

[0146] Step S114, water is simultaneously introduced into the first and second water delivery channels to flush the extracted detergent into the first delivery chamber;

[0147] Step S115: the incoming water flow and the detergent are mixed in the first delivery chamber to form a detergent mixed liquid;

[0148] Step S116, continue to fill water until the liquid level in the first delivery chamber exceeds the triggering liquid level of the siphon column, and the detergent mixture in the first delivery chamber flows out to the water outlet part below the water storage tank, and is injected into the washing drum of the washing machine from the water outlet provided on the water outlet part, so as to achieve the effect of adding detergent and filling water into the washing machine.

[0149] When the dispensing device dispenses softener, the specific working mode is as follows:

[0150] Step S211, detect the liquid level in the second delivery chamber to determine whether the detected value is less than the preset delivery amount; if so, execute step S212; if not, execute step S214;

[0151] Step S212, according to the formula: difference delivery amount = preset delivery amount - detection value, the difference delivery amount is obtained;

[0152] Step S213, water is introduced into the first water channel, and the detergent contained in the second liquid storage chamber is pumped into the second water channel until the softener extracted reaches the difference amount, and then step S214 is executed;

[0153] Step S214, water is simultaneously introduced into the first and second water channels to flush the extracted softener into the second delivery chamber;

[0154] Step S215: the incoming water flow and the softener are mixed in the second delivery chamber to form a softener mixed liquid;

[0155] Step S216, continue to add water until the liquid level in the second delivery chamber exceeds the triggering liquid level of the siphon column, and the softener mixture in the second delivery chamber flows out to the water outlet below the water storage tank, and is injected into the washing drum of the washing machine from the water outlet provided on the water outlet, so as to achieve the effect of delivering softener and adding water to the washing machine.

[0156] The above 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, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A linkage switching valve, comprising: Two channels for different water inflows; Features: The first channel is connected to the second channel; The two channels are respectively provided with valve plugs which can be moved towards the inlet or outlet direction by the impact of water flow; When water enters the first channel / second channel, the incoming water flow moves the valve plug in the first channel / second channel toward the outlet direction to close the outlet of the first channel / second channel, and the valve plug in the second channel / first channel moves toward the inlet direction to close the inlet of the second channel / first channel, and the incoming water flow flows out from the outlet of the second channel / first channel.

2. A linkage switching valve according to claim 1, characterized in that: Also included is a third outflow channel, wherein the inlet of the third outflow channel is connected to the connecting point of the two channels; When water enters the first channel and the second channel at the same time, the inflow water flow moves the valve plugs in the first channel and the second channel toward the outlet direction to close the outlets of the first channel and the second channel, and the inflow water flow flows out from the outlet of the third outflow channel.

3. A linkage switching valve according to claim 2, characterized in that: A first channel and a second channel are provided in parallel in the reversing valve, the two ends of the two channels are an inlet and an outlet respectively, the middle parts of the two channels are connected with the two ends of the connecting channel one by one, the middle part of the connecting channel is connected with the inlet of the third outflow channel, and the outlet of the third connecting channel is on the same side of the reversing valve as the outlet of the first channel and the outlet of the second channel.

4. A linkage switching valve according to claim 3, characterized in that: The axial height of the valve plug is smaller than the distance between the point where the valve plug is located and the connecting channel and the channel inlet, and the axial height of the valve plug is smaller than the distance between the point where the valve plug is located and the connecting channel and the channel outlet; When the valve plug is at the inlet position of the closed channel, the outlet of the channel where the valve plug is located is connected to the communication channel; When the valve plug is at the outlet position of the closed channel, the inlet of the channel where the valve plug is located is connected to the communication channel.

5. A linkage switching valve according to any one of claims 1 to 4, characterized in that: Slideways are respectively arranged in the two channels along the extending direction of the channels, and a sliding part corresponding to and plugged into the first slideway is arranged on the outer wall of the valve plug, so as to limit the valve plug to move only along the extending direction of the channels.

6. A linkage switching valve according to any one of claims 1 to 4, characterized in that: The end of the valve plug facing the channel inlet is a hemispherical surface, and the inner wall of the channel inlet is provided with an inlet sealing ring protruding radially inward, and the radial dimension of the inlet sealing ring is smaller than the maximum radial dimension of the hemispherical surface; The end of the valve plug facing the channel outlet is a plane, and a circle of coaxially arranged outlet sealing ring protruding toward the outlet side is provided on the plane of the valve plug. The outlet of the channel is provided with a circle of annular ribs protruding radially inward, and the radial dimension of the outlet sealing ring is larger than the inner radial dimension of the annular rib.

7. A washing additive delivery device, comprising: A first delivery water channel, used for extracting the first washing additive stored in the first liquid storage chamber; A second delivery water channel is used to extract the second washing additive stored in the second liquid storage chamber; The main water inlet channel is used to discharge the detergent additive mixture and / or the water; Features: A linkage switching valve according to any one of claims 1 to 6; The outlet of the first injection waterway and the outlet of the second injection waterway are connected to the inlet of the first channel and the inlet of the second channel of the linkage switching valve in a one-to-one correspondence; the outlets of the two channels of the linkage switching valve are connected to the main water inlet waterway.

8. A washing additive delivery device according to claim 7, characterized in that: The first and second water channels are provided with negative pressure suction structures respectively, and the negative pressure ports of the two negative pressure suction structures are connected. When the inlet water flows through any one of the water channels, negative pressure is formed in the other water channel to extract the corresponding detergent additives. Preferably, the outlet of the third outflow channel of the linkage switching valve is connected to the main water inlet waterway.

9. A control method for the washing additive dosing device according to any one of claims 7 to 8, characterized in that: When the first washing additive extracted into the first delivery waterway / the second washing additive into the second delivery waterway is delivered, water is fed into the first delivery waterway / the second delivery waterway, and the incoming water flow enters the first channel / the second channel of the linkage switching valve, the valve plug in the first channel / the second channel corresponds to closing the outlet of the first channel / the second channel, and the valve plug in the second channel / the first channel corresponds to closing the inlet of the second channel / the first channel, and the washing additives flow into the main water inlet waterway from the outlet of the second channel / the first channel together with the incoming water flow and are delivered outward.

10. The control method of a washing additive delivery device according to claim 9, characterized in that: When adding the first detergent additive / the second detergent additive, First, water is introduced into the second delivery water channel / the first delivery water channel, and the inlet water flow closes the outlet of the second channel / the first channel of the linkage switching valve and the inlet of the first channel / the second channel, so that the outlet of the first delivery water channel / the second delivery water channel is closed, and the first detergent additive stored in the first liquid storage chamber / the second detergent additive stored in the second liquid storage chamber is drawn into the first delivery water channel / the second delivery water channel by using the negative pressure generated by the inlet water flow; Water is then introduced into the first and second water channels at the same time, the inlet water flow closes the outlets of the first and second channels of the linkage switching valve, and opens the outlet of the third outflow channel, and the first washing additive / second washing additive extracted from the first and second water channels is flushed into the main water inlet water channel by the flowing water flow and released outward.

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