Drum washing machine

Abstract

A drum washing machine, comprising: a drum (400), the opening of the drum being provided with a door (200) that can be correspondingly opened and closed; and an automatic dispensing device (100) mounted on the door (200), wherein the automatic dispensing device (100) comprises: a liquid storage cavity (114) for storing a washing additive; a water supply pipeline (102) for introducing an incoming water flow of the drum washing machine in a controllable manner; and an automatic dispensing mechanism (101) for extracting the washing additive stored in the liquid storage cavity (114) and delivering the washing additive into the drum (400) of the drum washing machine along with the incoming water flow introduced by the water supply pipeline (102). By means of the configuration, the automatic dispensing device is additionally arranged on the door of the drum washing machine, so that the effect of using a dispensing device on the door of the drum washing machine to automatically dispense a washing additive into the drum is achieved, achieving the remarkable technological progress that the automatic dispensing device on the door can automatically dispense a pre-stored washing additive into the drum in a plurality of washing procedures. Additionally, the drum washing machine has a simple structure and remarkable effects, and is convenient to popularize and use.

Description

A drum washing machine Technical Field

[0001] The present invention belongs to the technical field of household appliances and relates to a drum washing machine, in particular to a drum washing machine with an automatic washing additive dispensing device installed on the machine door. Background Art

[0002] At present, with the continuous improvement of living standards, household appliances such as washing machines are gradually becoming widely used. In order to facilitate the washing of clothes, washing machines are generally equipped with automatic detergent additive dispensing devices for dispensing detergent additives, such as detergents for washing, disinfectants for disinfection, and softeners for making clothes softer, so as to improve the washing machine's processing effect on clothes.

[0003] Existing automatic detergent additive dispensing devices are generally installed on the housing of the washing machine, and use the water flow of the washing machine to dispense the extracted detergent additives into the drum of the washing machine; however, when the automatic detergent additive dispensing device is installed on the housing of the washing machine, it needs to occupy a part of the space of the housing, which affects the overall design of the washing machine.

[0004] In order to solve the above problems, some existing technical solutions install detergent additives on the door of the washing machine; in particular, since the door of a drum washing machine is generally set on the front side of the machine body, when the user opens the door to the outside and takes out and puts the clothes in the drum, the user can conveniently operate the inside of the door, so some solutions have a detergent additive dispensing device on the door.

[0005] However, since the door needs to be installed on the washing machine housing in a movable and openable manner, the detergent additive dispensing device installed on the door generally dispenses the injected detergent additive into the drum at one time, rather than an automatic dispensing device that automatically extracts and controls the dispensing of pre-stored detergent additives in multiple times.

[0006] In view of this, the present invention is proposed.

[0007] Summary of the Invention

[0008] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide a drum washing machine to achieve the purpose of installing an automatic dispensing device on the door of the drum washing machine; at the same time, another purpose of the present invention is to provide a drum washing machine to achieve the purpose of automatically extracting and dispensing pre-stored washing additives by using the dispensing device on the door, and automatically dispensing the pre-stored washing additives in batches in multiple working programs.

[0009] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0010] The present invention provides a drum washing machine, comprising a drum, wherein a door which can be opened and closed is provided at the drum opening; an automatic dispensing device is installed on the door; the automatic dispensing device comprises: a liquid storage chamber for storing washing additives; a water supply channel for introducing a water flow into the drum washing machine in a controllable manner; and an automatic dispensing mechanism for extracting the washing additives stored in the liquid storage chamber and dispensing the washing additives into the drum of the drum washing machine along with the water flow introduced by the water supply channel.

[0011] Furthermore, a delivery chamber is provided on the machine door; the delivery chamber has a water inlet, and the water supply waterway outlet is correspondingly connected to the water inlet of the delivery chamber; the delivery chamber has a liquid inlet, and the liquid outlet of the liquid storage chamber is connected to the delivery chamber via an automatic delivery mechanism, and the automatic delivery mechanism is used to controllably extract the washing additives stored in the liquid storage chamber into the delivery chamber; the delivery chamber has a delivery port, which is connected to the drum and is used to deliver the washing additives and / or water flow in the delivery chamber into the drum.

[0012] Furthermore, the automatic dispensing mechanism includes a pump, the inlet of the pump is connected to the liquid outlet of the liquid storage chamber, and the outlet of the pump is connected to the liquid inlet of the dispensing chamber, and is used to pump the detergent additive contained in the liquid storage chamber into the dispensing chamber by using the suction force generated by the pump when it is working;

[0013] and / or;

[0014] The automatic dispensing mechanism includes a negative pressure suction structure, which has a negative pressure flow channel inside. A negative pressure port is opened on the negative pressure flow channel. The negative pressure port is connected to the liquid outlet of the liquid storage chamber. The negative pressure flow channel is connected in series to the water supply waterway. It is used to use the incoming water flow flowing through the internal negative pressure flow channel to form a negative pressure at the negative pressure port, and then use the negative pressure to draw the washing additives contained in the liquid storage chamber into the dispensing chamber.

[0015] Furthermore, the automatic dispensing mechanism includes a control valve water circuit, and the liquid outlet of the liquid storage chamber is controllably connected to the liquid inlet of the dispensing chamber through the control valve water circuit, so as to dispense the washing additive in the liquid storage chamber into the dispensing chamber when connected; preferably, a control valve for controlling the on-off of the water circuit is installed on the control valve water circuit, and the control valve is any one or a combination of an electric control valve, a float valve, and a push-open valve.

[0016] Furthermore, the washing machine includes a shell, a drum is installed in the shell, and a clothing loading port is provided in the shell corresponding to the drum mouth, which is used to form a channel for taking clothes in and out of the drum; a door that can open and close corresponding to the clothing loading port is installed on the shell, and the automatic loading device is installed on the door; preferably, a protrusion protruding toward the interior of the shell is provided on the door, and at least a part of the protrusion extends into the drum mouth, the automatic loading device is installed on the protrusion, and the loading port of the loading cavity of the automatic loading device is opened toward the interior of the drum.

[0017] Furthermore, a water supply channel is provided on the housing of the washing machine, and a nozzle is provided at the outlet of the water supply channel. The nozzle has a water spray port for spraying water outward, and the water spray port is opened toward the water inlet of the delivery chamber of the automatic delivery device provided on the machine door;

[0018] Preferably, the water inlet of the delivery chamber is vertically arranged upward; when the machine door is in the closed position, the nozzle is located vertically above the water inlet of the delivery chamber, and the water outlet is located directly below the nozzle, coaxially arranged with the water inlet of the delivery chamber and vertically opened downward;

[0019] Further preferably, a control valve for controlling the on-off of the water supply channel is provided on the water supply channel.

[0020] Furthermore, the protrusion provided on the machine door is made of a transparent material, and at least a portion of the protrusion is staggered with the automatic feeding device, so that the user can observe the interior of the drum from the staggered portion.

[0021] Furthermore, a filling port is provided at the top of the liquid storage chamber for users to inject detergent additives into the liquid storage chamber; the liquid outlet of the liquid storage chamber is located at the bottom of the chamber and is connected to the delivery chamber via an automatic delivery mechanism. Preferably, a removable cover is installed at the filling port of the liquid storage chamber.

[0022] Furthermore, a siphon structure is provided at the delivery port of the delivery chamber for intercepting and mixing the washing additives flowing into the delivery chamber with the incoming water flow to form a washing additive mixture, and delivering the formed washing additive mixture into the drum along with the incoming water flow.

[0023] Furthermore, the siphon tube structure includes a siphon tube, which is arranged at the bottom delivery port of the delivery chamber and extends vertically upward into the delivery chamber; a siphon cap, which is buckled on the top of the siphon tube and has a sleeve portion extending downward and sleeved on the outer periphery of the siphon tube; a first set height difference is provided between the bottom end of the sleeve portion of the siphon cap and the bottom wall of the delivery chamber, and a second set height difference is provided between the top of the siphon cap and the top of the siphon tube, which is used to trigger the siphon effect when the liquid level in the liquid storage chamber reaches the height of the top of the siphon tube, and the washing additive mixture in the liquid storage chamber flows along the gap between the siphon cap and the siphon tube and the internal flow channel of the siphon tube to the delivery port of the delivery chamber.

[0024] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0025] Through the above-mentioned arrangement, an automatic dispensing device is added to the door of the drum washing machine to achieve the effect of automatically dispensing detergent additives into the drum using the dispensing device on the door of the drum washing machine, thereby achieving a significant technical progress in that the automatic dispensing device on the door can automatically dispense pre-placed detergent additives into the drum in multiple washing programs.

[0026] At the same time, the present invention has a simple structure and significant effects, and is suitable for popularization and application.

[0027] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide an automatic additive dispensing device. By providing a switch structure in the dispensing chamber, the switch structure can open the water inlet and the liquid outlet simultaneously under the action of the water pressure, thereby realizing automatic opening of the liquid outlet, so that the additive in the liquid storage chamber can automatically flow into the dispensing chamber for dispensing, eliminating the need for an additional suction pump as a power source to pump the additive from the liquid storage chamber into the dispensing chamber for dispensing, thereby achieving the purpose of reducing energy consumption and saving production and maintenance costs.

[0028] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0029] The present invention provides an automatic dispensing device, which is provided with a liquid storage chamber and a dispensing chamber. The liquid storage chamber is provided with a liquid outlet communicated with the dispensing chamber, the dispensing chamber is provided with a water inlet, and a switch structure is provided in the dispensing chamber for opening and closing the water inlet, and the liquid outlet is linked to open and close as the liquid level in the dispensing chamber changes.

[0030] Furthermore, the switch structure includes a push-pop switch arranged at the water inlet and a float switch arranged at the liquid outlet. The push-pop switch moves back and forth relative to the water inlet in the direction of water inlet, and the float switch moves back and forth relative to the liquid outlet in the direction of liquid discharge. The float switch switches between being linked with the push-pop switch and moving relative to the push-pop switch.

[0031] Furthermore, the push switch includes a push rod and a return spring, the two ends of the return spring are respectively connected to the first end of the push rod and the side wall of the delivery chamber, the second end of the push rod is a blocking end for blocking the water inlet, and the floating switch is arranged on the outer periphery of the push rod and is slidably connected to the outer periphery of the push rod along the axial direction of the push rod.

[0032] Furthermore, a radially protruding protrusion is provided on the outer periphery of the push rod, and an assembly through hole is opened on the protrusion. The axis of the assembly through hole is parallel to the axis of the push rod. The float switch is a columnar structure. The float switch is embedded in the assembly through hole and is slidably connected to the inner periphery of the assembly through hole. The end wall of the float switch is provided with a sealing portion for sealing the liquid outlet, and the sealing portion is exposed outside the assembly through hole.

[0033] Furthermore, a radially protruding slider is provided on the outer periphery of the floating switch, and a strip slide connected to the assembly through hole is provided on the peripheral wall of the assembly through hole. One end of the strip slide is a blocked end and the other end is an open end. The slider enters the strip slide through the open end of the strip slide and passes through the strip slide to be slidably connected with the strip slide.

[0034] Furthermore, the outer wall of the assembly through hole is provided with a circumferentially extending torsion spring, the middle part of the torsion spring is sleeved on the outer periphery of the slider passing through the strip slide, and the outer wall of the assembly through hole is provided with protrusions on both sides of the strip slide, and the two sides of the torsion spring are respectively sleeved on the outer periphery of the two protrusions. The torsion spring provides a reset force for resetting the floating switch and the push rod.

[0035] Furthermore, the push-to-pop switch also includes a locking rod, which has a locking section. An axially extending slide groove is provided on the outer periphery of the push-to-pop rod, and a locking groove is provided in the slide groove. The locking section is slidably connected to the slide groove, and when the locking section slides into place in the slide groove, it is inserted into the locking groove to lock the push-to-pop rod.

[0036] Furthermore, the chute includes a first section chute and a second section chute and a third section chute formed by bifurcating the first section chute. The intersection of the first section chute, the second section chute and the third section chute forms a conversion cavity. A convex rib is provided in the conversion cavity, and a concave portion is provided on the convex rib that is concave toward the first section chute.

[0037] The recessed portion cooperates with the inner wall of the conversion cavity to form a locking groove, and the locking section moves periodically in the first groove, the second groove, the locking groove and the third groove in sequence.

[0038] Furthermore, the delivery chamber is provided with a cylindrical guide portion protruding outward from the delivery chamber, and a water inlet and a water outlet communicating with the water inlet of the delivery chamber are respectively provided at the top and bottom ends of the guide portion. The inner circumference of the guide portion radially protrudes to form an annular limiting portion, and the second end of the push rod extends into the guide portion through the water outlet of the guide portion and abuts against the annular limiting portion, thereby sealing the opening formed around the inner circumference of the annular limiting portion.

[0039] Furthermore, the liquid storage cavity and the delivery cavity are distributed vertically, the liquid outlet is arranged at the bottom of the liquid storage cavity, and the water inlet is arranged at the top of the delivery cavity.

[0040] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0041] By arranging a switch structure in the delivery chamber, the switch structure can open the water inlet and the liquid outlet at the same time under the action of the water pressure, thereby realizing automatic opening of the liquid outlet, so that the additive in the liquid storage chamber can automatically flow into the delivery chamber for delivery, avoiding the need to additionally set up a suction pump as a power source to extract the additive in the liquid storage chamber into the delivery chamber for delivery, reducing energy consumption, and saving production and maintenance costs.

[0042] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an automatic dosing device. By providing a water storage chamber that can be disconnected from the outside atmosphere at the water outlet of the negative pressure generator, the water storage chamber can be disconnected from the outside atmosphere when water is admitted to flush the additive in the dosing chamber and can be filled with water, so that the water inlet of the negative pressure generator can flow from the negative pressure outlet into the dosing chamber to flush the additive. This ensures that the water inlet for flushing the additive comes from the water inlet of the negative pressure generator, avoids the need for an additional water inlet pipeline to enter the dosing chamber to flush the additive, improves the compactness of the automatic dosing device, and reduces production costs.

[0043] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0044] The present invention provides an automatic dispensing device, which is provided with a liquid storage chamber, a dispensing chamber and a negative pressure generator. The liquid storage chamber is provided with a liquid outlet communicated with the dispensing chamber, the negative pressure generator is provided with a water outlet and a negative pressure outlet communicated with the dispensing chamber, a first control valve for opening and closing the liquid outlet due to changes in negative pressure and a second control valve for opening and closing the negative pressure outlet due to changes in liquid level are provided in the dispensing chamber, and a water storage chamber that can be opened and closed with the outside atmosphere is provided at the water outlet.

[0045] Furthermore, the water storage chamber is connected to an overflow chamber, and the overflow chamber is provided with an overflow port connected to the outside atmosphere. The water inlet and the water outlet of the negative pressure generator are connected through a contraction port, the negative pressure port is provided on the contraction port, the overflow port is set higher than the negative pressure port, and the connection point between the water storage chamber and the overflow chamber is set lower than the negative pressure port.

[0046] Furthermore, the negative pressure generator includes a negative pressure tube extending in a straight line, and the water inlet and water outlet of the negative pressure generator are respectively arranged at the two ends of the negative pressure tube. A water storage pipe forming a water storage cavity is provided at the water outlet of the negative pressure generator. The water storage pipe is inclined relative to the negative pressure tube. One end of the water storage pipe intersects with the water outlet end of the negative pressure tube, and the other end is connected to an overflow pipe parallel to the negative pressure tube to form an overflow cavity. One end of the overflow pipe is communicated with the water storage pipe, and the other end is provided with an overflow port.

[0047] Furthermore, a storage pipe is provided at the intersection of the water storage pipe and the negative pressure pipe, and a accommodating chamber is formed inside the storage pipe. A float valve is provided in the accommodating chamber to open and close the connection between the water storage chamber and the overflow chamber due to changes in liquid level, and the water outlet of the negative pressure generator is arranged toward the accommodating chamber.

[0048] Furthermore, the water storage pipe is provided with a narrowing section at the connection point between the water storage chamber and the overflow chamber, which gradually narrows into the overflow chamber and inclines along with the water storage pipe. The inner periphery of the small-sized end of the narrowing section forms an opening communicating with the overflow chamber, and the radial dimension of the float valve is smaller than the radial dimension of the opening.

[0049] Furthermore, a retaining rib is provided at the water outlet of the negative pressure generator, and the retaining rib divides the water outlet of the negative pressure generator into a plurality of water outlet areas that restrict the float valve from entering the negative pressure pipe.

[0050] Furthermore, the storage tube and the negative pressure tube are coaxially arranged, one end of the storage tube is connected to the negative pressure tube and the water storage tube, and the other end is provided with a drain outlet, and a pressure relief valve is provided at the drain outlet for opening and closing the drain outlet due to changes in water pressure. The pressure relief valve is arranged outside the accommodating cavity, and a water hole communicating with the drain outlet is provided on the accommodating cavity, and the float valve opens and closes the water hole due to changes in water pressure.

[0051] Furthermore, the inner wall of the storage tube is provided with an annular dividing rib coaxial with the storage tube, and the middle opening of the annular dividing rib constitutes a water hole. The annular dividing rib divides the interior of the storage tube into a first section cavity communicating with the water storage tube and the negative pressure tube and a second section cavity provided with a drain outlet. The annular dividing rib and the inner periphery of the first section cavity form a accommodating cavity, and the pressure relief valve is arranged in the second section cavity.

[0052] Furthermore, the pressure relief valve includes a valve core that reciprocates axially along the second section of the cavity and a reset spring that provides a reset force for resetting the valve core. The reset spring is sleeved on the outer periphery of the valve core, one end of the reset spring is connected to the valve core, and the other end is connected to the inner wall of the storage tube at the outer periphery of the drain outlet. An abutment protrusion is provided at one end of the valve core facing the water hole, and the abutment protrusion passes through the water hole and abuts against the float valve.

[0053] Furthermore, the liquid storage chamber and the delivery chamber are distributed up and down, the bottom of the liquid storage chamber is provided with a liquid outlet, and the top of the delivery chamber is provided with a liquid inlet communicated with the negative pressure port.

[0054] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0055] By providing a water storage chamber that can be connected to and disconnected from the outside atmosphere at the water outlet of the negative pressure generator, the water storage chamber can be disconnected from the outside atmosphere when water is taken in to flush the additive in the dosing chamber, and can be filled with water, so that the water inlet of the negative pressure generator can flow from the negative pressure port into the dosing chamber to flush the additive, thereby realizing that the water inlet for flushing the additive comes from the water inlet of the negative pressure generator, avoiding the addition of an additional water inlet pipeline to feed water into the dosing chamber to flush the additive, improving the compactness of the structure of the automatic adding device while reducing production costs.

[0056] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] 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 undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0058] FIG1 is a schematic structural diagram of a drum washing machine according to an embodiment of the present invention;

[0059] FIG2 is a schematic structural diagram of an automatic additive delivery device according to an embodiment of the present invention;

[0060] FIG3 is an exploded view of an automatic additive delivery device according to an embodiment of the present invention;

[0061] FIG4 is a schematic diagram of the structure of the interior of the lower housing according to an embodiment of the present invention;

[0062] FIG5 is a schematic diagram of the positional relationship between the locking rod and the sliding groove according to an embodiment of the present invention;

[0063] FIG6 is a schematic structural diagram of a chute provided in an embodiment of the present invention;

[0064] FIG7 is a schematic structural diagram of a float switch provided in an embodiment of the present invention;

[0065] FIG8 is a schematic structural diagram of an automatic delivery device according to an embodiment of the present invention from one perspective;

[0066] FIG9 is a cross-sectional view taken along line AA in FIG8 ;

[0067] FIG10 is a schematic structural diagram of an automatic delivery device according to an embodiment of the present invention;

[0068] FIG11 is a schematic structural diagram of an automatic delivery device according to an embodiment of the present invention from one perspective;

[0069] FIG12 is an exploded view of an automatic delivery device according to an embodiment of the present invention;

[0070] FIG13 is a schematic structural diagram of the automatic dispensing device provided by an embodiment of the present invention from another perspective;

[0071] FIG14 is a cross-sectional view taken along line BB in FIG13 .

[0072] Icons: 100-automatic dispensing device; 101-automatic dispensing mechanism; 102-water supply channel; 103-sprinkler; 104-control valve; 200-door; 300-housing; 400-drum; 2-push-type switch; 1-housing; 11-upper housing; 111-water inlet; 112-addition port; 113-liquid outlet; 114-liquid storage chamber; 12-lower housing; 21-push-type switch; 211-push rod; 2111-chute; 2111a-first section chute; 2111b-second section chute; 21 11c - third section groove; 2112 - locking groove; 2113 - conversion cavity; 2114 - rib; 2115 - recessed portion; 212 - return spring; 213 - raised portion; 2131 - assembly through hole; 2132 - strip slide; 2133 - raised portion; 214 - mounting seat; 215 - locking rod; 2151 - locking section; 216 - spring; 2161 - first bent portion; 2162 - second bent portion; 217 - positioning hole; 22 - floating switch; 221 - assembly portion; 2211 - slider; 222 - switch unit; 2221 - groove unit; 2222 - blocking unit; 23 - torsion spring; 3 - siphon structure; 4 - delivery housing; 41 - delivery chamber; 411 - delivery port; 412 - water inlet; 413 - liquid inlet; 5 - top cover; 51 - guide unit; 511 - annular limiter; 52 - upper protrusion; 53 - lower protrusion; 121 - delivery port; 31 - second float valve; 414 - first float valve; 415 - check valve; 54 - protrusion; 55 - connecting pipe; 56 - delivery pipe; 6 - negative pressure generator; 61 - negative pressure port ;62-water inlet;63-negative pressure pipe;64-water outlet;65-retaining rib;7-float valve;8-water storage pipe;81-water storage chamber;811-narrowing section;9-overflow pipe;91-overflow chamber;92-overflow port;10-storage pipe;101-first section chamber;102-second section chamber;103-accommodating chamber;104-water hole;105-drainage outlet;106-pressure relief valve;1061-valve core;1062-reset spring;1063-abutment protrusion;107-annular separating rib;108-guide rib.

[0073] 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 rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0074] 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.

[0075] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0076] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0077] As shown in Figure 1, an embodiment of the present invention provides a drum washing machine, including a drum 400, with a door 200 that can be opened and closed accordingly provided at the drum mouth; an automatic dispensing device 100 is installed on the door 200; the automatic dispensing device 100 includes a liquid storage chamber 114 for storing washing additives; a water supply channel 102 for introducing water flow into the drum washing machine in a controllable manner; and an automatic dispensing mechanism 101 for extracting the washing additives stored in the liquid storage chamber 114 and dispensing them into the drum 400 of the drum washing machine along with the water flow introduced by the water supply channel 102.

[0078] Through the above-mentioned arrangement, an automatic dispensing device is added to the door of the drum washing machine to achieve the effect of automatically dispensing detergent additives into the drum using the dispensing device on the door of the drum washing machine, thereby achieving a significant technical progress in that the automatic dispensing device on the door can automatically dispense pre-placed detergent additives into the drum in multiple washing programs.

[0079] In the embodiment of the present invention, the automatic dispensing device 100 may be any structure in the prior art capable of automatically dispensing washing additives in batches and in fixed quantities; for example, the automatic dispensing device described in the following embodiment 1 or 2.

[0080] In an embodiment of the present invention, a delivery chamber 41 is provided on the machine door 200; the delivery chamber 41 has a water inlet 412, and the outlet of the water supply waterway 102 is correspondingly connected to the water inlet 412 of the delivery chamber 41; the delivery chamber 41 has a liquid inlet 413, and the liquid outlet 113 of the liquid storage chamber 114 is connected to the delivery chamber 41 via an automatic delivery mechanism 101, and the automatic delivery mechanism 101 is used to controllably extract the washing additives stored in the liquid storage chamber 114 into the delivery chamber 41; the delivery chamber 41 has a delivery port 411, which is connected to the drum 400 and is used to deliver the washing additives and / or the incoming water flow in the delivery chamber 41 into the drum 400.

[0081] In the embodiment of the present invention, the automatic dispensing mechanism 101 may be any existing structure that can pump the detergent additive contained in the liquid storage chamber 114 into the dispensing chamber 41, for example:

[0082] The automatic delivery mechanism 101 includes:

[0083] a pump, wherein the pump inlet is connected to the liquid outlet 113 of the liquid storage chamber 114, and the pump outlet is connected to the liquid inlet 413 of the delivery chamber 41, and is used to pump the detergent additive contained in the liquid storage chamber 114 into the delivery chamber 41 by using the suction force generated by the pump when the pump is in operation;

[0084] Also for example:

[0085] The automatic delivery mechanism 101 includes:

[0086] The negative pressure suction structure has a negative pressure flow channel inside, and a negative pressure port is opened on the negative pressure flow channel. The negative pressure port is connected to the liquid outlet 113 of the liquid storage chamber 114, and the negative pressure flow channel is connected in series to the water supply waterway 102. It is used to use the incoming water flow flowing through the internal negative pressure flow channel to form a negative pressure at the negative pressure port, and then use the negative pressure to draw the washing additives contained in the liquid storage chamber 114 into the delivery chamber 41.

[0087] Another example:

[0088] Automatic delivery mechanisms include:

[0089] The control valve water circuit is a water circuit installed with a control valve; the liquid outlet 113 of the liquid storage chamber 114 is connected to the liquid inlet 413 of the delivery chamber 41 through the water circuit in a controllable manner, and is used to deliver the washing additive in the liquid storage chamber 114 into the delivery chamber 41 when connected; preferably, a control valve for controlling the on-off of the water circuit is installed on the water circuit of the control valve water circuit, and the control valve can be any existing valve body component, such as: any one or combination of an electric control valve, a float valve, a push valve, etc.

[0090] Of course, the automatic dispensing device 100 for washing additives in the embodiment of the present invention may also adopt the structure of the automatic dispensing device described in the following embodiment 1 or 2.

[0091] In an embodiment of the present invention, a washing machine includes a housing 300, within which a drum 400 is mounted. The housing 300 is provided with a clothing loading opening corresponding to the drum opening of the drum 400, forming a passage for loading and unloading clothing from the drum 400. An outer drum is typically mounted externally of the drum, with the outer drum opening extending coaxially and in the same direction as the drum opening. A tubular, elastically stretchable window gasket is connected between the outer drum opening and the clothing loading opening to form a passage for loading and unloading clothing. A door 200 is mounted on the housing 300, which can be opened and closed corresponding to the clothing loading opening. The automatic loading device 100 is mounted on the door 200. Preferably, the door 200 is provided with a protrusion protruding toward the interior of the housing, at least a portion of which extends into the drum opening of the drum 400. The automatic loading device 100 is mounted on the protrusion. The loading opening 411 of the loading chamber 41 of the automatic loading device 100 is opened toward the interior of the drum 400, so that the added detergent additives and / or incoming water flow directly into the drum 400 of the washing machine.

[0092] In an embodiment of the present invention, a water supply path 102 is provided on the housing 300 of the washing machine, and a nozzle 103 is provided at the outlet of the water supply path 102, which is installed on the housing 300 of the washing machine; the nozzle 103 has a water spray port for spraying water outward, and the water spray port is opened toward the water inlet 412 of the delivery chamber 41 of the automatic delivery device 100 provided on the machine door 200; preferably, the water inlet 412 of the delivery chamber 41 is vertically arranged upward; when the machine door 200 is in a closed position, the nozzle 103 is located vertically above the water inlet 412 of the delivery chamber 41, and the water spray port 41 is located directly below the nozzle 103, is coaxially arranged with the water inlet 412 of the delivery chamber 41 and is vertically opened downward; further preferably, a control valve 104 for controlling the on-off of the water path is provided on the water supply path 102.

[0093] In the embodiment of the present invention, the protrusion provided on the machine door 200 is made of a transparent material, and at least a portion of the protrusion is staggered with the automatic dispensing device 100 to allow the user to observe the interior of the drum 400 from the staggered portion.

[0094] In the embodiment of the present invention, a filling port 112 is provided at the top of the liquid storage chamber 114 for the user to inject washing additives into the liquid storage chamber 114; the liquid outlet 113 of the liquid storage chamber 114 is at the bottom of the chamber and is connected to the dispensing chamber 41 through the automatic dispensing mechanism 101.

[0095] In an embodiment of the present invention, a siphon tube structure 3 is provided at the delivery port 411 of the delivery chamber 41, which is used to intercept and mix the washing additives flowing into the delivery chamber 41 with the incoming water flow to form a washing additive mixture, and deliver the formed washing additive mixture into the drum 400 along with the incoming water flow.

[0096] In the embodiment of the present invention, the siphon tube structure 3 includes a siphon tube, which is arranged at the bottom delivery port 411 of the delivery chamber 41 and extends vertically upward into the delivery chamber 411; a siphon cap, which is buckled on the top of the siphon tube and has a sleeve portion extending downward and sleeved on the periphery of the siphon tube; a first set height difference is provided between the bottom end of the sleeve portion of the siphon cap and the bottom wall of the delivery chamber 41, and a second set height difference is provided between the top of the siphon cap and the top of the siphon tube, which is used to trigger the siphon effect when the liquid level in the liquid storage chamber 114 reaches the height of the top of the siphon tube, and the washing additive mixture in the liquid storage chamber 114 flows along the gap between the siphon cap and the siphon tube and the internal flow channel of the siphon tube to the delivery port 411 of the delivery chamber 41.

[0097] Example 1

[0098] As shown in Figures 2-9, the present invention provides an automatic additive dosing device. The automatic dosing device 100 is provided with a liquid storage chamber 114 and a dosing chamber 41. The liquid storage chamber 114 is provided with a liquid outlet 113 communicating with the dosing chamber 41. The dosing chamber 41 is provided with a water inlet 412. The dosing chamber 412 is provided with a push-type switch 2 for opening and closing the liquid outlet 113 and the water inlet 412.

[0099] In an embodiment of the present invention, a push-type switch 2 is provided in the delivery chamber 412. The push-type switch 2 can open the water inlet 412 and the liquid outlet 113 at the same time under the action of the water pressure, thereby realizing the automatic opening of the liquid outlet 113, so that the additive in the liquid storage chamber 114 can automatically flow into the delivery chamber 412 for delivery, avoiding the need to additionally set up a suction pump as a power source to extract the additive in the liquid storage chamber 114 into the delivery chamber 412 for delivery, thereby reducing energy consumption and saving production and maintenance costs.

[0100] The additive dispensing device 100 can be used in washing machines, dishwashers, etc. A dispensing port 411 is provided on the dispensing cavity 412, and the dispensing port 411 is used to dispense the additive in the dispensing cavity 412. The washing machine includes a shell 300, and a drum 400 for holding water is provided in the shell 300. The detergent includes an inner tank, and the dispensing cavity 412 is connected to the drum 400 or the inner tank through the dispensing port 411.

[0101] Taking the liquid storage chamber 114 and the delivery chamber 412 as an example, the liquid outlet 113 is provided at the bottom of the liquid storage chamber 114, and the water inlet 412 is provided at the top of the delivery chamber 412, specifically, the additive delivery device includes a shell 1, the shell 1 includes an upper shell 11 and a lower shell 12 arranged up and down, the delivery chamber 41 is formed in the lower shell 12, and the upper shell 11 is divided into a left chamber and a right chamber, the right chamber forms the liquid storage chamber 114, the left chamber forms the water inlet chamber, the top of the left chamber is provided with a water inlet 111, and the water inlet 412 of the delivery chamber is connected to the water supply waterway 10 through the water inlet 111. 2, an addition port 112 for adding additives and a liquid outlet 113 for allowing additives to enter the delivery chamber 41 are provided at the top of the right chamber, so that the liquid storage chamber 114 and the delivery chamber 41 are arranged vertically, which facilitates the flow of additives in the liquid storage chamber 114 into the delivery chamber 41; by dividing the interior of the housing 1 into multiple chambers, while achieving automatic delivery of additives, the space inside the housing 1 can be reasonably utilized, making the structure of the automatic delivery device compact and reducing the external space occupied; the additives can be detergents for washing, softeners for rinsing, disinfectants for disinfection, etc.

[0102] Furthermore, a delivery shell 4 is provided in the lower shell 12, and a delivery chamber 41 is formed inside the delivery shell 4. The top of the delivery shell 4 is open, and a top cover 5 for closing the opening is provided at the open position. The top cover 5 extends in the left and right directions and can cover the bottom of the left chamber and the bottom of the right chamber. The water inlet 412 of the delivery chamber and the liquid inlet 413 of the delivery chamber are integrated on the top cover; an outlet is provided at the bottom of the lower shell 12, and the delivery port 411 delivers the additive in the delivery chamber 41 into the lower shell 12, and enters the washing machine through the outlet of the lower shell 12, and the washing water that has not entered the delivery chamber can enter the washing machine from the outlet of the lower shell 12.

[0103] As shown in Figures 4 and 9, in an embodiment of the present invention, the push-pop switch 2 includes a push-pop switch 21 and a float switch 22. The push-pop switch 21 reciprocates relative to the water inlet 412 in the direction of water inlet, and the float switch 22 reciprocates relative to the liquid outlet 113 in the direction of liquid outlet. The float switch 22 switches between being linked with the push-pop switch 21 and moving relative to the push-pop switch 21.

[0104] In the embodiment of the present invention, the push switch 21 opens the water inlet 412 under the action of the inlet water pressure, and closes the water inlet 412 after the inlet water pressure disappears. The push switch 21 can be pushed by the inlet water pressure to drive the float switch 22 to move, thereby opening the liquid outlet 113. The float switch 22 moves under the action of the buoyancy of the liquid to close the liquid outlet 113. The push switch 21 and the float switch 22 can realize the automatic opening and closing of the liquid outlet 113 and the water inlet 412.

[0105] The linkage between the float switch 22 and the push switch 21 can enable the push switch 21 to move under the push of the water pressure of the inlet water, so that the liquid outlet 113 is opened; the relative movement of the float switch 22 and the push switch 21 can enable the float switch 22 to move independently under the action of the buoyancy of the liquid, so that the opened liquid outlet 113 is closed; when the water inlet 412 is provided at the top of the delivery chamber 411 and the liquid outlet 113 is provided at the top of the liquid storage chamber, the liquid outlet direction and the water inlet direction are up and down directions.

[0106] Furthermore, the push switch 21 includes a push rod 211 and a return spring 212. The two ends of the return spring 212 are respectively connected to the first end of the push rod 211 and the side wall of the delivery chamber 41. The second end of the push rod 211 is a blocking end for blocking the water inlet. The floating switch 22 is arranged on the outer periphery of the push rod 211 and is slidably connected to the outer periphery of the push rod 211 along the axial direction of the push rod 211.

[0107] Taking the upward and downward extension of the push rod as an example, the push rod 211 moves downward when the water pressure of the water inlet is pushed to open the water inlet 412, and moves upward to close the water inlet 412 after the water pressure of the water inlet disappears. The return spring 212 provides a return force for the push rod 211; the bottom of the push rod 211 is connected to the bottom of the delivery chamber 41 via the return spring 212, and the float switch 22 and the push rod 211 are linked in the upward and downward directions, or move relative to each other.

[0108] Furthermore, the push switch 21 also includes a locking rod 215, which has a locking section. An axially extending slide groove 2111 is provided on the outer periphery of the push rod 211, and a locking groove 2112 is provided in the slide groove 2111. The locking section 2151 is slidably connected to the slide groove 2111. When the locking section 2151 slides into place in the slide groove 2111, it is inserted into the locking groove 2112 to lock the push rod 211.

[0109] Taking the example of the locking rod 215 extending up and down, the locking section 2151 extending left and right, and the slide groove 2111 extending up and down, the locking section 2151 extends into the slide groove 2111 and moves up and down in the slide groove 2111, the floating switch 22 moves downward with the pushing rod 211 until the locking section 2151 is inserted into the locking groove 2112, and the pushing rod 211 moves upward to reset after the locking section 2151 is separated from the locking groove 2112.

[0110] The locking rod 215 further includes a connecting section and a mounting section extending vertically. The mounting section and the locking section 2151 are respectively provided at both ends of the connecting section. A mounting seat 214 is provided on the side wall of the delivery cavity 41, and the mounting section is mounted on the mounting seat 214.

[0111] The push-to-pop switch 21 further includes a spring piece 216 extending up and down, the top of the spring piece 216 is bent upward to form a first groove-shaped bend portion 2161, the notch of the first bend portion 2161 is set back to the slide groove 2111, the left groove side wall and the right groove side wall of the first bend portion 2161 on the left and right sides of the notch are respectively opened, and a positioning hole 217 is set on the lower groove side wall of the first bend portion 2161, the top of the connecting section and the mounting section pass through the positioning hole 217, and the mounting section and the first bend portion are respectively opened. The upper groove side walls of 2161 are parallel, the mounting section is abutted against the upper groove side walls of the first bend portion 2161, and the upper groove side walls of the first bend portion 2161 are arranged on the mounting seat 214; the positioning hole 217 is used to position the connecting section to prevent the connecting section from shifting during movement, and the upper groove side walls of the first bend portion 2161 are used to limit the mounting section to prevent the locking rod 215 from moving excessively upward during movement, and to ensure that the locking rod 215 remains in place and does not shift during movement.

[0112] The bottom of the spring piece 216 is bent downward to form a groove-shaped second bent portion 2162. The notch of the second bent portion 2162 is set toward the slide groove and the notch of the second bent portion 2162 is set upward. The left groove side wall and the right groove side wall of the second bent portion 2162 on the left and right sides of the notch are respectively opened. The bottom of the connecting section is abutted against the front groove side wall of the second bent portion 2162 on the front side of the notch. The second bent portion 2162 can adjust the position of the locking segment 2151 in the front-to-back direction, so that the locking segment 2151 can periodically move in the first groove 2111a, the second groove 2111b, the locking groove 2112 and the third groove 2111c in sequence.

[0113] As shown in Figures 5 and 6, the sliding groove 2111 includes a first section groove 2111a and a second section groove 2111b and a third section groove 2111c formed by the bifurcation of the first section groove 2111a. A conversion cavity 2113 is formed at the intersection of the first section groove 2111a, the second section groove 2111b and the third section groove 2111c. A convex rib 2114 is provided in the conversion cavity 2113. The convex rib 2114 is provided with a recessed portion 2115 which is recessed toward the first section groove 2111a. The recessed portion 2115 cooperates with the inner wall of the conversion cavity 2113 to form a locking groove 2112. The locking section 2151 moves periodically in the first section groove 2114, the second section groove 2111b, the locking groove 2112 and the third section groove 2111c in turn.

[0114] Taking the push rod 211 extending up and down as an example, the second section groove 2111b and the third section groove 2111c are located on the upper part of the first section groove 2111a, and the rib 2114 is recessed downward to form a recessed portion 2115, and the recessed portion 2115 cooperates with the inner wall of the conversion cavity 2113 above the recessed portion 2115 to form a locking groove 2112.

[0115] It should be noted that the position of the locking segment 2151 itself does not change during the movement of the ejector rod 211 , but the relative position of the locking segment 2151 relative to the moving ejector rod 211 does change.

[0116] After the liquid outlet 113 is opened, liquid continuously enters the dosing chamber 41. As the float switch 22 follows the continuous rise of the liquid level in the dosing chamber 41 until the liquid outlet 113 is closed, the amount of additive entering the dosing chamber 41 from the liquid storage chamber 114 can be obtained based on the time difference between the opening and closing of the liquid outlet 113. This allows the dosing chamber 41 to be used as a constant volume chamber, thereby knowing the amount of additive that the automatic dosing device dispenses into the washing machine or dishwasher at one time.

[0117] As shown in Figures 4 and 9, further, a cylindrical guide portion 51 protruding outward from the delivery chamber 41 is provided on the delivery chamber 41, and a water inlet and a water outlet are respectively provided at the top and bottom ends of the guide portion 51. The inner circumference of the guide portion 51 radially protrudes to form an annular limiting portion 511. The second end of the push rod 211 extends into the guide portion 51 through the water outlet of the guide portion 51 and abuts against the annular limiting portion 511, thereby sealing the opening formed around the inner circumference of the annular limiting portion 511.

[0118] Taking the upward and downward extension of the push rod as an example, specifically, the top cover 5 protrudes upward to form a cylindrical guide portion 51, the water outlet of the guide portion 51 coincides with the water inlet of the delivery chamber 41, and the top of the push rod 211 extends into the guide portion 51 through the water outlet at the bottom end of the guide portion 51 and abuts against the bottom of the annular limit portion 511, and blocks the opening of the annular limit portion 511, thereby blocking the water inlet 412 of the delivery chamber.

[0119] When the liquid outlet 113 is in the closed state, the bottom of the annular stopper 511 abuts against the top of the push rod 211, thereby blocking the opening of the annular stopper 511. This allows the wash water entering the guide portion 51 to completely contact the push rod 211 while the water inlet is closed, thus providing a greater thrust to the push rod 211.

[0120] Wash water from the outside enters the guide portion 51 from the water inlet at the top of the guide portion 51, passes through the annular stopper 511, contacts the top of the push rod 211, and impacts the push rod 211 downward, causing the push rod 211 to move downward. The annular stopper 511 separates from the push rod 211, opening the water inlet 412 of the delivery chamber. The wash water enters the delivery chamber 41 from the water outlet at the bottom of the guide portion 51, and the liquid outlet 113 switches from a closed state to an open state.

[0121] The ejector rod 211 moves upward in the guide portion 51 until it abuts against the bottom of the annular limiting portion 511 . The annular limiting portion 511 can block the upwardly moving ejector rod to prevent the ejector rod 211 from moving upward too much.

[0122] Specifically, the guide portion 51 is arranged in the left chamber, and the water inlet at the top of the guide portion 51 is arranged opposite to the main water inlet 111 at the top of the left chamber, so that the washing water entering the left chamber can enter the guide portion 51 with an increased impact force, so that the push rod 211 can drive the float switch 22 to move downward, and the guide portion 51 can gather the washing water entering the left chamber, so that the washing water can accurately impact the push rod 211; and, because the top of the push rod 211 extends into the guide portion 51 through the opening at the bottom end of the guide portion 51, the push rod 211 can move up and down in the guide portion 51 under the guidance of the guide portion 51, thereby improving the accuracy of opening or closing the liquid outlet 113; the top of the push rod 211 always moves up and down in the guide portion 51.

[0123] More specifically, the guide portion 51 above the annular limiting portion 511 gradually narrows from top to bottom, which can increase the impact pressure of the washing water entering the guide portion 51 below the annular limiting portion 511, thereby increasing the impact on the push rod 211.

[0124] As shown in Figures 4 and 7, in an embodiment of the present invention, a radially protruding protrusion 213 is provided on the outer periphery of the push rod 211, and an assembly through hole 2131 is opened on the protrusion 213. The axis of the assembly through hole 2131 is parallel to the axis of the push rod 211. The float switch 22 is a columnar structure. The float switch 22 is embedded in the assembly through hole 2131 and is slidably connected to the inner periphery of the assembly through hole 2131. The end wall of the float switch 22 is provided with a sealing portion 2222 for sealing the liquid outlet 113, and the sealing portion 2222 is exposed outside the assembly through hole 2131.

[0125] Taking the push rod 211 extending up and down as an example, the axis line of the assembly hole 2 extends up and down, and the floating switch 22 and the assembly hole 2131 slide in the up and down directions, realizing the relative movement of the floating switch 22 and the assembly hole 2131 in the up and down directions. The blocking portion 2222 is provided on the top end wall of the floating switch 22.

[0126] The assembly through hole 2131 is a circular hole, and the float switch 22 is a cylindrical structure. The float switch 22 is coaxially embedded in the assembly through hole 2131. The arrangement of the assembly through hole 2131 enables the float switch 22 to move up and down with the push rod 211, and the float switch 22 can generate relative movement with the push rod 211 in the vertical direction.

[0127] Specifically, the blocking portion 2222 is a cylindrical structure coaxial with the float switch 22. The top cover 5 is provided with a delivery chamber liquid inlet 413 located below the liquid storage chamber liquid outlet 113 and overlapping with the liquid storage chamber liquid outlet 113. The radial dimension of the top end wall of the blocking portion 2222 is greater than the radial dimension of the delivery chamber liquid inlet 41. The top end wall of the blocking portion 2222 closes the delivery chamber liquid inlet 41 or opens the delivery chamber liquid inlet 41.

[0128] More specifically, an upper protrusion 52 is provided on the top of the top cover 5, a through hole is provided on the top cover 5, and a lower protrusion 53 is provided on the bottom of the top cover 5. The upper protrusion 52 is hollow inside to form an upper flow channel, and the lower protrusion 53 is hollow inside to form a lower flow channel. The upper flow channel, the through hole, and the lower flow channel are sequentially connected to form the liquid inlet 41 of the delivery chamber. The top end wall of the blocking portion 2222 blocks the bottom end of the liquid inlet 41 of the delivery chamber.

[0129] The radial dimension of the top end wall of the sealing portion 2222 is greater than the radial dimension of the bottom end of the liquid inlet 41 of the delivery chamber, which can increase the sealing area of ​​the top end wall of the sealing portion 2222 to the bottom end of the liquid inlet 41 of the delivery chamber, and increase the sealing between the sealing portion 2222 and the bottom end of the liquid inlet 41 of the delivery chamber.

[0130] Furthermore, the outer periphery of the floating switch 22 radially protrudes to form a slider 2211, and a strip slide 2132 connected to the assembly through hole is provided on the peripheral wall of the assembly through hole 2131. One end of the strip slide 2132 is a closed end, and the other end is an open end. The slider 2211 enters the strip slide 2132 through the open end of the strip slide 2132, and passes through the strip slide 2132 to be slidably connected with the strip slide 2132.

[0131] Taking the push rod extending up and down as an example, the top end of the strip slide is an open end, and the slider 2211 can slide up and down in the strip slide 2132;

[0132] The float switch 22 includes a mounting portion 221 and a switch portion 222. The mounting portion 221 is groove-shaped, with the notch of the mounting portion 221 facing upward. Both the mounting portion 221 and the switch portion 222 are circular structures. The blocking portion 2222 is coaxially arranged on the top end wall of the switch portion 222. The lower portion of the blocking portion 2222 is embedded in the groove of the mounting portion 221. The top of the switch portion 222 radially protrudes to form a first abutment portion. The free end of the first abutment portion axially protrudes downward to form a second abutment portion. The first abutment portion, the second abutment portion, and the outer periphery of the switch portion 222 form a groove portion 2221. The top of the mounting portion 221 is embedded in the groove portion 2221.

[0133] The assembly portion 221 and the switch portion 222 are both embedded in the assembly through hole 2131 , and the slider 2211 slides in the up and down directions on the strip-shaped slideway 2132 to guide the relative movement between the assembly through hole 2131 and the assembly portion 221 .

[0134] Furthermore, the outer wall of the assembly through hole 2131 is provided with a circumferentially extending torsion spring 23, the middle part of the torsion spring 23 is sleeved on the outer periphery of the slider 2211 passing through the strip slide 2132, and the outer wall of the assembly through hole 2131 is provided with protrusions 2133 on both sides of the strip slide 2132, and the two sides of the torsion spring 23 are respectively sleeved on the outer periphery of the two protrusions 2133. The torsion spring 23 provides torque for the sealing part 2222 to close the liquid outlet 113 and provides torque for the push rod to reset.

[0135] The method of placing the automatic placing device in this application is as follows:

[0136] Taking the push rod extending upward and downward as an example, the water supply channel 102 is connected, and wash water flows into the guide portion 51 through the water supply channel 102. The water inlet 412 opens, and the water pressure of the washing water impacts the push rod 211 downward, causing the push rod 211 to move downward. The return spring 212 is compressed, and the downward movement of the push rod 211 drives the float switch 22 downward. At the same time, the locking section 2151 moves upward from the first groove 2111a to the second groove 2111b, thereby opening the liquid outlet 113.

[0137] When the liquid outlet 113 is opened, the flow of wash water into the guide portion stops, causing the push rod 211 to move upward. The return spring 212 extends but does not reset. The upward movement of the push rod 211 drives the float switch 22 upward, and at the same time, the locking section 2151 moves downward from the first groove 2111a to the locking groove 2112 and is locked in the locking groove 2112, so that the water inlet 412 and the liquid outlet 113 remain open for a period of time.

[0138] When the water inlet 412 and the liquid outlet 113 are in the open state, the additive in the liquid storage chamber 114 automatically flows into the dispensing chamber 41 due to its own gravity. As the liquid level in the dispensing chamber 41 rises, the buoyancy of the liquid continues to increase, causing the float switch 22 to float. The float switch 22 moves upward until the float switch 22 reaches the position of the liquid outlet 113, closing the liquid outlet 113. During this process, the position of the push rod 211 remains unchanged, the state of the return spring 212 remains unchanged, and the water inlet 412 is in the open state. Due to the upward movement of the float switch 22, the push rod 211 and the float switch 22 generate relative movement, and the torsion spring 23 extends.

[0139] After the liquid outlet 113 is closed, the wash water enters the guide portion 51. The water pressure from the inlet wash water impacts the push rod 211 downward, causing the push rod 211 to move downward. The return spring 212 is compressed, and the push rod 211 moves downward, causing the locking section 2151 to disengage from the locking groove 2112 and enter the second groove 2111b. During this process, the float switch 22 is subjected to the greater buoyancy of the liquid and remains closed to the liquid outlet 113. The downward movement of the push rod 211 causes relative movement between the push rod 211 and the float switch 22, causing the torsion spring 23 to continue to extend.

[0140] Washing water continues to flow into the guide part 51, the washing water continuously impacts the pushing rod 211, and continuously enters the delivery chamber 41 to flush the additives. The mixed liquid of washing water and additives is discharged from the delivery port 411 through the siphon structure 3. During the continuous water inflow, the float switch 22 always closes the liquid outlet 113, and the torsion spring 23 is always in an extended state. After the washing water has been flushing for a certain period of time, the washing water stops flowing into the guide part 51, so that the reset spring 212 and the torsion spring 23 are reset. The reset of the reset spring 212 and the torsion spring 23 drives the pushing rod 211 to move upward and reset. The reset of the torsion spring 23 drives the float switch 22 to reset, so that the liquid outlet 113 is always in a closed state. The liquid in the delivery chamber 41 is finally siphoned out through the siphon structure 3. During this process, the pushing rod 211 moves upward and resets, so that the locking section 2151 moves downward from the second section groove 2111b to the first section groove 2111a and resets.

[0141] The automatic dispensing device 100 described in this embodiment can be installed on the door 200 of the drum washing machine, and the dispensing port 411 of the automatic dispensing device is connected to the drum 400 of the drum washing machine to allow the washing additive mixture or water to be dispensed into the drum 400.

[0142] Example 2

[0143] As shown in Figures 10-14, the present invention provides an automatic dispensing device, in which a liquid storage chamber 114, a dispensing chamber 41 and a negative pressure generator 6 are provided in the dispensing device 100. The liquid storage chamber 114 is provided with a liquid outlet 113 communicating with the dispensing chamber 41, the negative pressure generator 6 is provided with a water outlet 64 and a negative pressure port 61 communicating with the dispensing chamber 41, the dispensing chamber 41 is provided with a control valve 1 for opening and closing the liquid outlet 113 due to changes in negative pressure, and a control valve 2 for opening and closing the negative pressure port 61 due to changes in liquid level, and a water storage chamber 81 that can be connected and disconnected from the outside atmosphere is provided at the water outlet 64.

[0144] In an embodiment of the present invention, a water storage chamber 81 that can be connected to and disconnected from the outside atmosphere is provided at the water outlet 64 of the negative pressure generator 6. The water storage chamber 81 can be disconnected from the outside atmosphere when water is taken in to flush the additive in the delivery chamber 41, and is filled with water, so that the water inlet of the negative pressure generator 6 can flow from the negative pressure port 61 into the delivery chamber 41 to flush the additive, thereby realizing that the water inlet for flushing the additive comes from the water inlet of the negative pressure generator 6, avoiding the additional water inlet pipeline to feed water into the delivery chamber 41 to flush the additive, thereby improving the compactness of the structure of the automatic adding device 100 and reducing the production cost.

[0145] The additive delivery device can be used in washing machines, dishwashers, etc. The washing machine includes a housing 300 and a drum 400 disposed in the housing 300 for holding water. The dishwasher includes an inner container, and the delivery cavity 41 is connected to the drum or the inner container.

[0146] Specifically, the additive delivery device includes a shell 1, which includes an upper shell 11 and a lower shell 12 arranged in an upper and lower manner. The delivery chamber 41 is formed in the lower shell. The upper shell 11 is divided into a left chamber and a right chamber. The right chamber forms a liquid storage chamber 114, and the left chamber forms a water inlet chamber for feeding water into the water inlet 62 of the negative pressure generator 6. The top of the left chamber is provided with a water inlet 111, and the water inlet 62 of the negative pressure generator 6 is connected to the water supply pipe 102 through the water inlet 111. The top of the right chamber is provided with an additive for adding additives. The opening 112 and the liquid outlet 113 of the delivery chamber 41 for the additive to enter are arranged vertically in the liquid storage chamber 114 and the delivery chamber 41, which facilitates the flow of the additive in the liquid storage chamber 114 into the delivery chamber 41. By dividing the interior of the housing 1 into a plurality of chambers, the space inside the housing 1 can be reasonably utilized while achieving automatic delivery of the additive, making the structure of the automatic delivery device compact and reducing the external space occupied. The additive can be a detergent for washing, a softener for rinsing, a disinfectant for disinfection, and the like.

[0147] Furthermore, a delivery shell 4 is provided in the lower shell, and a delivery chamber 41 is formed inside the delivery shell 4. The top of the delivery shell 4 is open, and a top cover 5 is provided at the open opening to close the open opening. A protrusion is provided on the top cover 5, and the protrusion 54 is cylindrical. The liquid outlet 113 of the liquid storage chamber 114 is connected with the delivery chamber 41 through the protrusion 54, and the check valve 415 opens and closes the liquid outlet 113 of the liquid storage chamber 114 by opening and closing the opening at the lower end of the protrusion 54.

[0148] A siphon structure 3 is also provided in the delivery chamber 41, and the siphon structure 3 has a float valve 2 31 for controlling the siphon effect of the siphon structure 3; a delivery pipe 56 is connected to the liquid outlet end of the siphon structure 3, and the liquid outlet of the delivery pipe 56 extends to the bottom of the lower shell 12. The liquid outlet of the delivery pipe 56 forms a delivery port 411 of the delivery chamber 41, and a delivery port 121 is provided at the bottom of the lower shell. The liquid coming out of the delivery pipe 56 enters the washing machine through the delivery port 121 of the lower shell.

[0149] The first control valve provided in the delivery chamber 41 is a check valve 415 , and the second control valve provided in the delivery chamber 41 is a float valve 414 .

[0150] In an embodiment of the present invention, an overflow chamber 91 is connected to the water storage chamber 81, and an overflow port 92 communicating with the outside atmosphere is provided on the overflow chamber 91. The water inlet 62 and the water outlet 64 of the negative pressure generator 6 are connected through a contraction port. The negative pressure port 61 is provided on the contraction port. The overflow port 92 is set higher than the negative pressure port 61. The connection point between the water storage chamber 81 and the overflow chamber 91 is set lower than the negative pressure port 61.

[0151] In an embodiment of the present invention, specifically, the negative pressure generator 6 includes a negative pressure tube 63 extending in a straight line, and the water inlet 62 and the water outlet 64 of the negative pressure generator 6 are respectively arranged at the two ends of the negative pressure tube 63. A water storage tube 8 forming a water storage chamber 81 is provided at the water outlet 64 of the negative pressure generator 6. One end of the water storage tube 8 intersects with the water outlet end of the negative pressure tube 63, and the other end is connected to an overflow tube 9 parallel to the negative pressure tube 63 to form an overflow chamber 91. One end of the overflow tube 9 is communicated with the water storage tube 8, and the other end is provided with an overflow port 92.

[0152] Taking the negative pressure pipe 63 extending in a straight line in the vertical direction as an example, the water storage pipe 8 gradually extends obliquely toward the negative pressure pipe 63 from top to bottom, extending to the outer periphery of the water outlet 64 of the negative pressure generator 6, and the overflow pipe 9 extends in a straight line from top to bottom; during the water intake process of the negative pressure generator 6, the water in the water storage pipe 8 can enter the overflow pipe 9, and the provision of the overflow pipe 9 can prevent the water in the water storage pipe 8 from overflowing.

[0153] Furthermore, a storage pipe 10 is provided at the intersection of the water storage pipe 8 and the negative pressure pipe 63, and a accommodating chamber 103 is formed inside the storage pipe 10. A float valve 7 is provided in the accommodating chamber 103, which opens and closes the connection between the water storage chamber 81 and the overflow chamber 91 due to changes in the liquid level, and the water outlet 64 of the negative pressure generator 6 is arranged toward the accommodating chamber 103.

[0154] Taking the negative pressure tube 63 extending in the vertical direction as an example, the storage tube 10 extends in a straight line from top to bottom. The negative pressure tube 63, the storage tube 10, and the water storage tube 8 intersect to form a conversion chamber. The connection point between the negative pressure tube 63 and the water storage tube 8 is lower than the connection point between the water storage tube 8 and the overflow tube 9. The float valve 7 is arranged in the accommodating chamber 103. The float valve 7 can float up as the water level in the water storage chamber 81 rises. Under the action of water pressure, the float valve 7 blocks the connection between the water storage chamber 81 and the overflow chamber 91, thereby isolating the water storage chamber 81 from the outside atmosphere and filling it with water. When the float valve 7 is in the accommodating chamber 103, the water storage chamber 81 and the overflow chamber 91 are connected, so that the water storage chamber 81 is connected to the outside atmosphere.

[0155] Furthermore, the storage tube 10 is coaxially arranged with the negative pressure tube 63 , and the water outlet 64 of the negative pressure generator 6 is arranged toward the accommodating chamber 103 , so that the float valve 7 in the accommodating chamber 103 can be pressed downward by the water pressure of the water inlet of the negative pressure generator 6 .

[0156] Water is first introduced into the negative pressure generator 6. The water generated by the negative pressure generator 6 continuously flows into the water storage chamber 81 from the water outlet 64 of the negative pressure generator 6, causing the water level in the water storage chamber 81 to continuously rise, filling the water storage chamber 81 with water. During this process, the float valve 7 in the accommodating chamber 103 is pressed downward by the water pressure of the incoming water and does not float up.

[0157] Stop feeding water into the negative pressure generator 6. As the water pressure of the water disappears, the float valve 7 floats to the water surface in the liquid storage chamber 114 under the action of the buoyancy of the water.

[0158] Water is introduced into the negative pressure generator 6 for the second time, and the float valve 7 tightly blocks the connection between the water storage chamber 81 and the overflow chamber 91 under the action of the water pressure of the inflowing water;

[0159] During the floating process of the float valve 7, it first enters the conversion chamber from the accommodating chamber 103, and then enters the water storage chamber 81 from the conversion chamber. The storage tube 10 extends straight from top to bottom to reduce the obstruction to the movement of the float valve 7, and when the storage tube 10 has a drain port 105, it is beneficial to the discharge of water in the water storage tube 8; the water storage tube 8 gradually extends at an angle from top to bottom, which is beneficial to the water pressure of the incoming water pushing the float valve 7 upward, so that the float valve 7 tightly blocks the connection between the water storage chamber 81 and the overflow chamber 91, and when the storage tube 10 has a drain port 105, it has a buffering and guiding effect on the falling of the float valve 7, while preventing water from remaining on the side wall of the storage tube 10.

[0160] Because the water storage pipe 8 and the storage pipe 10 extend in different directions, the conversion chamber can convert the moving direction of the float valve 7, so that the float valve 7 can enter the water storage chamber 81 from the accommodating chamber 103 without hindrance, accurately blocking the connection between the water storage chamber 81 and the overflow chamber 91.

[0161] To be more specific, the water storage pipe 8 is provided with a narrowing section 811 at the connection point between the water storage chamber 81 and the overflow chamber 91, which gradually shrinks into the overflow chamber 91 and tilts along with the water storage pipe 8. The inner periphery of the small-sized end of the narrowing section 811 forms an opening connected to the overflow chamber 91, and the radial dimension of the float valve 7 is smaller than the radial dimension of the opening.

[0162] Specifically, taking the negative pressure tube 63 extending in a straight line in the up and down directions as an example, the contraction section is arranged at the top of the water storage pipe 8, the opening is a circular opening, and the float valve 7 is spherical. The outer periphery of the float valve 7 is pressed against the inner periphery of the opening under the action of the water pressure of the incoming water, so that the float valve 7 blocks the opening; the setting of the narrowing section 811 can increase the contact strength between the outer periphery of the float valve 7 and the opening, and increase the sealing of the float valve 7 and the opening.

[0163] It should be noted that the water in the negative pressure pipe 63 enters the water storage pipe 8 from the conversion chamber. When the water storage pipe 8 is filled with water, the negative pressure pipe 63 is also filled with water.

[0164] The liquid inlet 413 of the delivery chamber 41 is set lower than the negative pressure port 61, and a connecting pipe 55 is provided on the top cover 5. One end of the connecting pipe 55 is connected to the negative pressure port 61, and the other end of the connecting pipe 55 is connected to the liquid inlet 413 of the delivery chamber 41; when the negative pressure generator 6 introduces flushing water into the delivery chamber 41, the water inlet of the negative pressure generator 6 can flow into the delivery chamber 41 through the negative pressure port 61 and the liquid inlet 413 of the delivery chamber 41 in sequence to flush the additive, so that the liquid inlet 413 of the delivery chamber 41 serves as the water inlet 412 of the delivery chamber 41.

[0165] A control valve, namely a second float valve 31, is provided in the delivery chamber 41. A guide cavity is provided in the delivery chamber 41 to guide the movement of the second float valve 31. The guide cavity faces the liquid inlet 413 of the delivery chamber 41. The second float valve 31 rises due to the buoyancy of the liquid to block the liquid inlet 413 of the delivery chamber 41, thereby blocking the negative pressure port 61.

[0166] When the water storage pipe 8 is filled with water, the dosing chamber 41 is filled with additives. According to the time when the water storage pipe 8 is filled with water, the amount of additives fed into the dosing chamber 41 by the liquid storage chamber 114 is obtained, so that the dosing chamber 41 can be used as a constant volume chamber, thereby knowing the amount of additives that the automatic dosing device doses into the washing machine or dishwasher at one time.

[0167] Furthermore, the retaining rib 65 of the water outlet of the negative pressure tube 63 extends from one end of the water outlet 64 of the negative pressure tube 63 to the other end of the water outlet 64, so that the water outlet 64 of the negative pressure tube 63 is divided into two water outlet areas, preventing the float valve 7 from entering the negative pressure tube 63 from the two water outlet areas. The two water inlet areas can limit the float valve 7 from entering the negative pressure tube 63, so that the float valve 7 enters the water storage chamber 81 from the accommodating chamber 103.

[0168] The negative pressure pipe 63 and the water storage pipe 8 are located in the lower shell, and the water inlet 62 of the negative pressure pipe 63 extends into the left cavity;

[0169] In addition, the negative pressure pipe 63 can be integrally formed with the water storage pipe 8 , and the storage pipe 10 is separately provided from the negative pressure pipe 63 and the water storage pipe 8 .

[0170] In an embodiment of the present invention, the storage tube 10 is coaxially arranged with the negative pressure tube 63. One end of the storage tube 10 is connected to the negative pressure tube 63 and the water storage tube 8, and the other end is provided with a drain outlet 105. The drain outlet 105 is provided with a pressure relief valve 106 that opens and closes the drain outlet 105 due to changes in water pressure. The pressure relief valve 106 is arranged outside the accommodating chamber 103. The accommodating chamber 103 is provided with a water hole 104 that communicates with the drain outlet 105. The float valve 7 opens and closes the water hole 104 due to changes in water pressure.

[0171] As shown in Figures 11 and 14, in an embodiment of the present invention, the drain outlet 105 is used to discharge the water in the water storage pipe 8 and the negative pressure pipe 63 filled with water into the washing machine; the purpose of providing the pressure relief valve 106 is to, on the one hand, open the drain outlet 105 to discharge the water in the pipe, and on the other hand, close the drain outlet 105 to prevent the water in the pipe from being discharged from the drain outlet 105 when the float valve 7 blocks the connection between the water storage chamber 81 and the overflow chamber 91.

[0172] Specifically, the inner wall of the storage tube 10 is provided with an annular dividing rib 107 coaxial with the storage tube 10. The middle opening of the annular dividing rib 107 constitutes a water hole 104. The annular dividing rib 107 divides the storage tube 10 into a first section cavity 101 communicating with the water storage pipe 8 and the negative pressure pipe 63 and a second section cavity 102 provided with a drain outlet 105. The annular dividing rib 107 and the inner periphery of the first section cavity 101 form a accommodating cavity 103, and the pressure relief valve 106 is arranged in the second section cavity 102.

[0173] Taking the negative pressure pipe 63 extending in the up and down directions as an example, the float valve 7 is arranged at the upper part of the annular dividing rib 107, and moves downward under the action of water pressure to block the water hole 104. The pressure relief valve 106 is arranged at the lower part of the annular dividing rib 107, and blocks the drain outlet 105 when the float valve 7 blocks the water hole 104.

[0174] The annular partition cavity gradually tilts from top to bottom toward the first cavity section 101 and forms an accommodating cavity 103 matching the float valve 7 with the inner wall of the first cavity section 101;

[0175] The pressure relief valve 106 includes a valve core 1061 that reciprocates axially along the second section cavity 102 and a reset spring 1062 that provides a reset force for the valve core 1061. The reset spring 1062 is sleeved on the outer periphery of the valve core 1061. One end of the reset spring 1062 is connected to the valve core 1061, and the other end is connected to the inner wall of the storage tube 10 around the drain outlet 105. An abutment protrusion 1063 is provided at one end of the valve core 1061 facing the water hole 104. The abutment protrusion 1063 passes through the water hole 104 and abuts against the float valve 7 to support the float valve 7.

[0176] Furthermore, the bottom of the valve core 1061 is exposed at the drain port 105 , and the storage tube 10 extends out of the lower housing 12 through the injection port 121 , so that the drain port 105 extends out of the lower housing 12 .

[0177] Taking the negative pressure tube 63 extending straight in the up and down directions as an example, the valve core 1061 gradually narrows from top to bottom, the top of the valve core 1061 is the large-sized end of the valve core 1061, and the bottom of the valve core 1061 is the small-sized end of the valve core 1061. The part of the valve core 1061 between the top and the bottom of the valve core 1061 is used to block the drain outlet 105, so that when the valve core 1061 blocks the drain outlet 105, the small-sized end of the valve core 1061 is exposed outside the shell, so that an upward force can be applied to the small-sized end of the valve core 1061, so that the reset spring 1062 is extended and the valve core 1061 is reset.

[0178] Furthermore, the drain outlet 105 is provided at the bottom of the second section cavity 102, and the bottom of the second section cavity 102 is provided with a cylindrical guide rib 108 coaxial with the drain outlet 105, the lower part of the reset spring 1062 is sleeved on the outer periphery of the cylindrical guide rib 108, the top of the reset spring 1062 is connected to the large-size end of the valve core 1061, and the bottom of the reset spring 1062 is against the end face of the bottom of the second section cavity 102, and the top and bottom of the guide rib 108 are respectively provided with openings, the top opening of the guide rib 108 is for the valve core 1061 to be inserted, and the bottom opening of the guide rib 108 forms the drain outlet 105, and the valve core 1061 moves up and down in the guide rib 108, and when the inner periphery of the valve core 1061 is against the outer periphery of the guide rib 108, the guide rib 108 is blocked, thereby blocking the drain outlet 105.

[0179] Specifically, when water is first introduced into the negative pressure generator 6, the float valve 7 is pressed downward by the water pressure in the accommodating chamber 103. The float valve 7 is tightly abutted against the inner wall of the accommodating chamber 103, blocking the water hole 104. The valve core 1061 drives the float valve 7 to move downward to block the drain port 105, and the return spring 1062 is compressed.

[0180] Stop feeding water into the negative pressure generator 6, the water pressure disappears, and the float valve 7 floats up to the water surface of the water storage chamber 81 under the action of buoyancy. The return spring 1062 extends, the valve core 1061 resets, and the drain port 105 is opened. During this process, a small amount of water in the water storage pipe 8 will enter the washing machine through the drain port 105.

[0181] Water is introduced into the negative pressure generator 6 for the second time. Under the action of the water pressure from the inflowing water, the float valve 7 blocks the connection between the water storage chamber 81 and the overflow chamber 91. The valve core 1061 moves downward under the action of the water pressure from the inflowing water, blocking the drain outlet 105. The return spring 1062 is compressed.

[0182] Stop feeding water into the negative pressure generator 6, the water pressure of the water disappears, the reset spring 1062 extends, the valve core 1061 resets, the valve core 1061 opens the drain port 105, and the water in the water storage pipe 8 and the negative pressure pipe 63 is discharged from the drain port 105 into the washing machine.

[0183] The method of delivering the additive delivery device is as follows:

[0184] When water is first introduced into the negative pressure pipe 63, negative pressure is generated in the negative pressure pipe 63. This negative pressure draws suction into the delivery chamber 41, causing the check valve 415 to automatically open. As water continues to flow into the negative pressure pipe 63, the additive in the liquid storage chamber 114 is continuously drawn into the delivery chamber 41. At this time, the float valve 7 moves downward under the action of the water pressure from the incoming water, blocking the water hole 104. The float valve 7 drives the valve core 1061 downward, which blocks the drain port 105. The return spring 1062 is compressed, and the water from the negative pressure pipe 63 continuously enters the water storage pipe 8.

[0185] After water is introduced into the negative pressure pipe 63 for a set time, the water storage pipe 8 is filled with water and the addition chamber 41 is filled with additives. The first float valve 414 blocks the liquid inlet 413 of the addition chamber 41, thereby blocking the negative pressure port 61. The inside of the addition chamber 41 is no longer sucked, causing the check valve 415 to automatically close. The pressure in the addition chamber 41 is insufficient to open the second float valve 31, allowing the siphon structure 3 to produce a siphon effect.

[0186] After the injection chamber 41 is filled with the additive, water is stopped from entering the negative pressure pipe 63. Under the buoyancy of the water, the float valve 7 floats up to the water surface of the water storage chamber, the return spring 1062 extends, the valve core 1061 returns to its original position, and the drain port 105 is opened.

[0187] Water flows into the negative pressure pipe 63 for the second time. Under the action of the water pressure, the float valve 7 blocks the connection between the water storage chamber 81 and the overflow chamber 91. The return spring 1062 is compressed, and the valve core 1061 moves downward to block the drain port 105. At this time, the incoming water is ejected from the negative pressure port 61 and enters the delivery chamber 41 through the liquid inlet 413 of the delivery chamber 41, flushing the additive in the delivery chamber 41. The water pressure causes the float valve 2 31 in the siphon structure 3 to open. Under the action of the siphon, the water in the delivery chamber 41 is discharged into the lower housing 12 through the delivery pipe 56. Then, the water is delivered into the washing machine through the delivery port 121 of the lower housing 12, thereby delivering the additive.

[0188] After the flushing additive is finished, water stops flowing into the negative pressure pipe 63, the water pressure of the incoming water disappears, the reset spring 1062 extends, the valve core 1061 resets, the valve core 1061 opens the drain port 105, and the water in the water storage pipe 8 and the negative pressure pipe 63 is discharged from the drain port 105 into the washing machine.

[0189] The automatic dispensing device 100 described in this embodiment can be installed on the door 200 of the drum washing machine, and the dispensing port 411 of the automatic dispensing device is connected to the drum 400 of the drum washing machine to allow the washing additive mixture or water to be dispensed into the drum 400.

[0190] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments of equivalent changes using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. The implementation schemes in the above-mentioned embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above-mentioned embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A drum washing machine, comprising a drum, wherein a door capable of being opened and closed is provided at the drum opening; Features: An automatic delivery device is installed on the door; The automatic delivery device comprises: A liquid storage chamber for storing washing additives; Water supply circuit, which controls the on-off flow of water into the drum washing machine; The automatic delivery mechanism is used to extract the washing additive stored in the liquid storage chamber and deliver it into the drum of the drum washing machine along with the incoming water flow introduced by the water supply waterway.

2. The drum washing machine according to claim 1, characterized in that: A delivery cavity is provided on the machine door; The delivery chamber has a water inlet, and the water supply waterway outlet is correspondingly connected to the delivery chamber water inlet; The delivery cavity has a liquid inlet, and the liquid outlet of the liquid storage cavity is connected to the delivery cavity via an automatic delivery mechanism, and the automatic delivery mechanism is used to controllably extract the washing additive stored in the liquid storage cavity into the delivery cavity; The delivery cavity has a delivery port, which is communicated with the drum and is used for delivering the washing additive and / or the inlet water flow in the delivery cavity into the drum.

3. The drum washing machine according to claim 2, characterized in that: Automatic delivery mechanisms include: A pump, the inlet of the pump is connected to the liquid outlet of the liquid storage chamber, and the outlet of the pump is connected to the liquid inlet of the delivery chamber, and is used to pump the detergent additive contained in the liquid storage chamber into the delivery chamber by using the suction force generated when the pump is working; and / or; Automatic delivery mechanisms include: A negative pressure suction structure has a negative pressure flow channel inside, a negative pressure port is opened on the negative pressure flow channel, the negative pressure port is connected to the liquid outlet of the liquid storage chamber, and the negative pressure flow channel is connected in series to the water supply waterway, and is used to use the incoming water flow flowing through the internal negative pressure flow channel to form a negative pressure at the negative pressure port, and then use the negative pressure to draw the washing additives contained in the liquid storage chamber into the delivery chamber.

4. The drum washing machine according to claim 2, characterized in that: Automatic delivery mechanisms include: The control valve water circuit, the liquid outlet of the liquid storage chamber is controllably connected to the liquid inlet of the delivery chamber through the control valve water circuit, and is used to utilize gravity to deliver the detergent additive in the liquid storage chamber into the delivery chamber when it is connected; Preferably, a control valve for controlling the on-off of the waterway is installed on the control valve waterway, and the control valve is any one or a combination of an electric control valve, a float valve, and a push valve.

5. The drum washing machine according to any one of claims 1 to 4, characterized in that: The washing machine comprises a housing, a drum is installed in the housing, and a clothing delivery opening is provided in the housing corresponding to the drum opening, so as to form a passage for taking and placing the clothing in the drum; The shell body is provided with a door which can correspond to the opening and closing of the clothing delivery port, and the automatic delivery device is installed on the door.

6. The drum washing machine according to claim 5, characterized in that: The machine door is provided with a protrusion protruding toward the inside of the shell, and at least part of the protrusion extends into the drum mouth. The automatic delivery device is installed in the hollow cavity provided on the protrusion, and the delivery port of the delivery cavity of the automatic delivery device is opened toward the inside of the drum.

7. The drum washing machine according to claim 5, characterized in that: The shell of the washing machine is provided with a water supply channel, the outlet of the water supply channel is provided with a nozzle, the nozzle has a water spray port for spraying water outward, and the water spray port is opened toward the water inlet of the delivery cavity of the automatic delivery device arranged on the machine door.

8. The drum washing machine according to claim 7, characterized in that: The water inlet of the delivery chamber is vertically arranged upward; when the machine door is in a closed position, the nozzle is located vertically above the water inlet of the delivery chamber, and the water outlet is located directly below the nozzle, coaxially arranged with the water inlet of the delivery chamber and vertically opened downward.

9. The drum washing machine according to claim 5, characterized in that: The protrusions on the machine door are made of transparent material, and at least part of the protrusions is staggered with the automatic delivery device, so that the user can observe the inside of the drum through the drum mouth from the staggered part.

10. The drum washing machine according to claim 5, characterized in that: A filling port is provided at the top of the liquid storage chamber for the user to inject detergent additives into the liquid storage chamber; The liquid outlet of the liquid storage chamber is located at the bottom of the chamber and is connected to the delivery chamber via an automatic delivery mechanism; Preferably, an openable and closable cover is installed at the filling port of the liquid storage chamber.

11. The drum washing machine according to any one of claims 2 to 10, characterized in that: A siphon structure is provided at the delivery port of the delivery chamber, which is used to intercept and mix the washing additives flowing into the delivery chamber with the inlet water flow to form a washing additive mixed liquid, and deliver the formed washing additive mixed liquid into the drum along with the inlet water flow.

12. The drum washing machine according to claim 11, characterized in that: The siphon structure comprises: The siphon is arranged at the bottom delivery port of the delivery cavity and vertically extends into the delivery cavity and upwards; The siphon cap is buckled on the top of the siphon tube and has a sleeve portion extending downward and sleeved on the outer periphery of the siphon tube; There is a first set height difference between the bottom end of the sleeve part of the siphon cap and the bottom wall of the delivery chamber, and there is a second set height difference between the top of the siphon cap and the top of the siphon tube, which is used to trigger the siphon effect when the liquid level in the liquid storage chamber reaches the height of the top of the siphon tube, and the detergent additive mixture in the liquid storage chamber flows along the gap between the siphon cap and the siphon tube and the internal flow channel of the siphon tube to the delivery port of the delivery chamber.

13. An automatic delivery device, wherein a liquid storage chamber and a delivery chamber are provided in the automatic delivery device, a liquid outlet communicating with the delivery chamber is provided on the liquid storage chamber, and a water inlet is provided on the delivery chamber, characterized in that: A switch structure is provided in the delivery chamber to open and close the water inlet, and to open and close the liquid outlet in conjunction with changes in the liquid level in the delivery chamber.

14. The automatic delivery device according to claim 13, characterized in that: The switch structure includes a push switch arranged at the water inlet and a floating switch arranged at the liquid outlet. The push switch reciprocates relative to the water inlet in the direction of water inlet to open and close the water inlet, and the floating switch reciprocates relative to the liquid outlet in the direction of liquid outlet to open and close the liquid outlet. The push switch opens and closes the water inlet due to the change in water pressure. When the water inlet is opened, the float switch is linked with the push switch to open the liquid outlet, and as the liquid level in the delivery chamber rises, the float switch is separated from the push switch to close the liquid outlet.

15. The automatic delivery device according to claim 14, characterized in that: The push switch includes a push rod and a return spring, the two ends of the return spring are respectively connected to the first end of the push rod and the side wall of the delivery chamber, the second end of the push rod is a blocking end for blocking the water inlet, and the floating switch is arranged on the outer periphery of the push rod and is slidably connected to the outer periphery of the push rod along the axial direction of the push rod.

16. The automatic delivery device according to claim 15, characterized in that: The outer periphery of the push rod is provided with a radially protruding protrusion, and the protrusion is provided with an assembly through hole. The axis line of the assembly through hole is parallel to the axis line of the push rod. The floating switch is a columnar structure. The floating switch is embedded in the assembly through hole and is slidably connected to the inner periphery of the assembly through hole. The end wall of the floating switch is provided with a sealing portion for sealing the liquid outlet, and the sealing portion is exposed outside the assembly through hole.

17. The automatic delivery device according to claim 16, characterized in that: A radially protruding slider is provided on the outer periphery of the floating switch, and a strip slide connected to the assembly through hole is provided on the peripheral wall of the assembly through hole. One end of the strip slide is a blocked end and the other end is an open end. The slider enters the strip slide through the open end of the strip slide and passes through the strip slide to be slidably connected with the strip slide.

18. The automatic delivery device according to claim 17, characterized in that: The outer peripheral wall of the assembly through hole is provided with a circumferentially extending torsion spring, the middle part of the torsion spring is sleeved on the outer periphery of the slider passing through the strip slide, the outer peripheral wall of the assembly through hole is provided with protrusions on both sides of the strip slide, and the two sides of the torsion spring are respectively sleeved on the outer periphery of the two protrusions, and the torsion spring provides a reset force for resetting the floating switch and the push rod.

19. The automatic delivery device according to claim 15, characterized in that: The push-to-pop switch also includes a locking rod, which has a locking section. An axially extending sliding groove is provided on the outer periphery of the push-to-pop switch, and a locking groove is provided in the sliding groove. The locking section is slidably connected to the sliding groove. When the locking section slides into place in the sliding groove, it is inserted into the locking groove to lock the push-to-pop switch.

20. The automatic delivery device according to claim 19, characterized in that: The chute includes a first section chute and a second section chute and a third section chute formed by bifurcation of the first section chute. A conversion cavity is formed at the intersection of the first section chute, the second section chute and the third section chute. A convex rib is arranged in the conversion cavity. A concave portion concave toward the first section chute is arranged on the convex rib. The recessed portion cooperates with the inner wall of the conversion cavity to form a locking groove, and the locking section moves periodically in the first groove, the second groove, the locking groove and the third groove in sequence.

21. The automatic delivery device according to claim 15, characterized in that: The delivery cavity is provided with a cylindrical guide portion protruding out of the delivery cavity, and a water inlet and a water outlet communicating with the water inlet of the delivery cavity are respectively provided at the top and bottom ends of the guide portion. The inner circumference of the guide portion radially protrudes to form an annular limiting portion, and the second end of the push rod extends into the guide portion through the water outlet of the guide portion and abuts against the annular limiting portion, thereby blocking the opening formed by the inner circumference of the annular limiting portion.

22. The automatic delivery device according to any one of claims 13 to 21, characterized in that: The liquid storage cavity and the delivery cavity are distributed up and down, the liquid outlet is arranged at the bottom of the liquid storage cavity, and the water inlet is arranged at the top of the delivery cavity.

23. An automatic delivery device, wherein a liquid storage chamber, a delivery chamber and a negative pressure generator are provided in the delivery device, the liquid storage chamber is provided with a liquid outlet communicating with the delivery chamber, the negative pressure generator is provided with a water outlet and a negative pressure port communicating with the delivery chamber, a first control valve for opening and closing the liquid outlet due to negative pressure changes and a second control valve for opening and closing the negative pressure port due to liquid level changes are provided in the delivery chamber, characterized in that: A water storage chamber which can be connected and disconnected from the outside atmosphere is arranged at the water outlet.

24. The automatic delivery device according to claim 23, characterized in that: The water storage chamber is connected to an overflow chamber, and the overflow chamber is provided with an overflow port communicating with the outside atmosphere. The water inlet and the water outlet of the negative pressure generator are connected through a contraction port, the negative pressure port is arranged on the contraction port, the overflow port is arranged higher than the negative pressure port, and the connection point between the water storage chamber and the overflow chamber is arranged lower than the negative pressure port.

25. The automatic delivery device according to claim 24, characterized in that: The negative pressure generator includes a negative pressure tube extending in a straight line. The water inlet and the water outlet of the negative pressure generator are respectively arranged at the two ends of the negative pressure tube. A water storage pipe forming a water storage cavity is arranged at the water outlet of the negative pressure generator. The water storage pipe is arranged obliquely relative to the negative pressure tube. One end of the water storage pipe intersects with the water outlet end of the negative pressure tube, and the other end is connected to an overflow pipe parallel to the negative pressure tube to form an overflow cavity. One end of the overflow pipe is communicated with the water storage pipe, and the other end is provided with an overflow port.

26. The automatic delivery device according to claim 25, characterized in that: A storage pipe is provided at the intersection of the water storage pipe and the negative pressure pipe, and a accommodating chamber is formed inside the storage pipe. A float valve is provided in the accommodating chamber to open and close the connection between the water storage chamber and the overflow chamber due to changes in liquid level. The water outlet of the negative pressure generator is arranged toward the accommodating chamber.

27. The automatic delivery device according to claim 26, characterized in that: The water storage pipe is provided with a narrowing section which gradually narrows into the overflow chamber and tilts along with the water storage pipe at the connection point between the water storage chamber and the overflow chamber. The inner periphery of the small-sized end of the narrowing section forms an opening communicating with the overflow chamber. The radial dimension of the float valve is smaller than the radial dimension of the opening.

28. The automatic delivery device according to claim 27, characterized in that: A retaining rib is arranged at the water outlet of the negative pressure generator, and the retaining rib divides the water outlet of the negative pressure generator into a plurality of water outlet areas which restrict the float valve from entering the negative pressure pipe.

29. The automatic delivery device according to claim 26, characterized in that: The storage tube is coaxially arranged with the negative pressure tube, one end of the storage tube is connected with the negative pressure tube and the water storage tube, and the other end is provided with a drain outlet, at which a pressure relief valve is provided for opening and closing the drain outlet due to changes in water pressure, the pressure relief valve is arranged outside the accommodating cavity, and the accommodating cavity is provided with a water hole connected with the drain outlet, and the float valve opens and closes the water hole due to changes in water pressure.

30. The automatic delivery device according to claim 29, characterized in that: The inner wall of the storage tube is provided with an annular dividing rib coaxial with the storage tube, and the middle opening of the annular dividing rib constitutes a water hole. The annular dividing rib divides the interior of the storage tube into a first cavity communicating with the water storage tube and the negative pressure tube and a second cavity provided with a drain outlet. The annular dividing rib and the inner periphery of the first cavity form a accommodating cavity, and the pressure relief valve is arranged in the second cavity.

31. The automatic delivery device according to claim 30, characterized in that: The pressure relief valve includes a valve core that reciprocates axially along the second section cavity and a reset spring that provides a reset force for the valve core. The reset spring is sleeved on the outer periphery of the valve core. One end of the reset spring is connected to the valve core, and the other end is connected to the inner wall of the storage tube at the outer periphery of the drain outlet. An abutment protrusion is provided at one end of the valve core facing the water hole, and the abutment protrusion passes through the water hole and abuts against the float valve.

32. The automatic delivery device according to any one of claims 23 to 31, characterized in that: The liquid storage cavity and the delivery cavity are distributed up and down, the bottom of the liquid storage cavity is provided with a liquid outlet, and the top of the delivery cavity is provided with a liquid inlet communicated with the negative pressure port.

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