Automatic throwing device

Abstract

The invention provides an automatic throwing device. A liquid storage cavity, a throwing cavity and a negative pressure generator are arranged in the automatic throwing device, a liquid outlet communicated with the throwing cavity is formed in the liquid storage cavity, a water outlet and a negative pressure opening communicated with the throwing cavity are formed in the negative pressure generator, and a first control valve for opening and closing the liquid outlet due to negative pressure change and a second control valve for opening and closing the negative pressure opening due to liquid level change are arranged in the throwing cavity. A water storage cavity which can be connected and disconnected with the outside atmosphere is arranged at the water outlet; the water outlet of the negative pressure generator is provided with the water storage cavity which can be connected and disconnected with the external atmosphere, and the water storage cavity can be disconnected with the external atmosphere when inflow water flushes the additive in the feeding cavity and is filled with water, so that inflow water of the negative pressure generator can flow into the feeding cavity from the negative pressure opening to flush the additive; the water for flushing the additive comes from the water inlet of the negative pressure generator, so that an additional water inlet pipeline is prevented from being additionally arranged to feed water into the feeding cavity for flushing the additive, and the production cost is reduced while the compactness of the structure of the automatic adding device is improved.

Description

Technical Field

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

[0002] At present, with the continuous improvement of living standards, household appliances such as washing machines and dishwashers are gradually being widely used. In order to facilitate the washing of clothes, dishes, etc., washing machines, dishwashers and other household appliances are generally equipped with automatic dispensing devices for dispensing additives, such as detergents for washing, disinfectants for disinfection, etc., for the convenience of users. The existing automatic dispensing device is provided with a liquid storage chamber, a dispensing chamber, a negative pressure generator for generating negative pressure by water intake, a first water inlet pipe for dispensing water into the negative pressure generator to generate negative pressure in the negative pressure generator, and a second water inlet pipe for dispensing water into the dispensing chamber to flush the additive. The negative pressure generator is provided with a negative pressure port and a water outlet. The dispensing chamber is provided with a control valve for connecting and disconnecting the negative pressure port and the dispensing chamber due to a change in liquid level and a check valve for connecting and disconnecting the liquid outlet and the dispensing chamber due to a change in negative pressure. When the negative pressure port is connected to the dispensing chamber and the liquid outlet is connected to the dispensing chamber, liquid is introduced into the dispensing chamber. After the liquid is introduced into the dispensing chamber, the negative pressure port is disconnected from the dispensing chamber, the liquid outlet is disconnected from the dispensing chamber, and the second water inlet pipe is used to dispensing water into the dispensing chamber. The water is used to flush the additive into the washing machine, thereby implementing the dispensing of the additive. In the above-mentioned automatic dispensing device, the first water inlet pipe is used to dispense water into the negative pressure generator and the second water inlet pipe is used to dispense water into the dispensing chamber, resulting in a large number of water inlet pipes, which results in the structure of the automatic dispensing device being not compact enough and the production cost being high.

[0003] In view of this, the present invention is proposed. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an automatic dosing device. A water storage chamber that can be connected and disconnected with the outside atmosphere is provided at the water outlet of the negative pressure generator, and the water storage chamber can be disconnected from the outside atmosphere when water is inletted to flush the additive in the dosing chamber, and 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, so that the water inlet for flushing the additive comes from the water inlet of the negative pressure generator, avoiding the need to add an additional water inlet pipeline to inlet water into the dosing chamber to flush the additive, thereby improving the compactness of the structure of the automatic adding device and reducing the production cost.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] The present invention provides an automatic delivery device, wherein a liquid storage chamber, a delivery chamber and a negative pressure generator are arranged in the delivery device, the liquid storage chamber is provided with a liquid outlet communicated with the delivery chamber, the negative pressure generator is provided with a water outlet and a negative pressure port communicated with the delivery chamber, a first control valve which opens and closes the liquid outlet due to negative pressure changes and a second control valve which opens and closes the negative pressure port due to liquid level changes are arranged in the delivery chamber, and a water storage chamber which can be connected and disconnected with the outside atmosphere is arranged at the water outlet.

[0007] Furthermore, 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.

[0008] 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.

[0009] 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.

[0010] 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 with the water storage pipe. The inner periphery of the small-sized end of the narrowing section forms an opening connected to the overflow chamber, and the radial dimension of the float valve is smaller than the radial dimension of the opening.

[0011] 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.

[0012] Furthermore, 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 communicating with the drain outlet, and the float valve opens and closes the water hole due to changes in water pressure.

[0013] Furthermore, the inner wall of the storage tube is provided with an annular dividing rib coaxial with the storage tube, 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 circumference of the first cavity form a accommodating cavity, and the pressure relief valve is arranged in the second cavity.

[0014] 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.

[0015] Furthermore, the liquid storage chamber and the delivery chamber are distributed vertically, a liquid outlet is arranged at the bottom of the liquid storage chamber, and a liquid inlet communicating with the negative pressure port is arranged at the top of the delivery chamber.

[0016] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0017] By providing a water storage chamber that can be connected 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 delivery 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 delivery chamber to flush the additive, thereby achieving the goal that the water inlet for flushing the additive comes from the water inlet of the negative pressure generator, avoiding the need to add an additional water inlet pipeline to feed water into the delivery chamber to flush the additive, thereby improving the compactness of the structure of the automatic adding device and reducing the production cost.

[0018] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0020] Figure 1 A schematic diagram of the structure of an automatic delivery device provided by an embodiment of the present invention;

[0021] Figure 2 A structural schematic diagram of an automatic delivery device provided by an embodiment of the present invention from one perspective;

[0022] Figure 3 An exploded view of an automatic delivery device provided by an embodiment of the present invention;

[0023] Figure 4 A schematic structural diagram of the automatic delivery device provided by an embodiment of the present invention from another perspective;

[0024] Figure 5 for Figure 4 Cross-section at BB;

[0025] Figure 6 This is a schematic structural diagram of a drum washing machine provided in Embodiment 2 of the present invention.

[0026] Icons: 100-automatic delivery device; 101-automatic delivery mechanism; 102-water supply waterway; 103-sprinkler; 104-control valve; 200-door; 300-shell; 400-drum; 1-shell; 11-upper shell; 111-water inlet; 112-addition port; 113-liquid outlet; 114-liquid storage chamber; 12-lower shell; 121-delivery port; 3-siphon structure; 31-float valve 2; 4-delivery shell; 41-delivery chamber; 411-delivery port; 412-water inlet; 413-liquid inlet; 414-float valve 1; 415-check valve; 5-top cover; 54-convex Starting part; 55-connecting pipe; 56-dispensing 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 port; 106-pressure relief valve; 1061-valve core; 1062-reset spring; 1063-butt protrusion; 107-annular dividing rib; 108-guide rib.

[0027] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0028] 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.

[0029] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Embodiment 1

[0032] like Figure 1-5 As shown, the present invention provides an automatic delivery device, wherein a liquid storage chamber 114, a delivery chamber 41 and a negative pressure generator 6 are provided in the delivery device 100, a liquid storage chamber 114 is provided with a liquid outlet 113 communicating with the delivery chamber 41, a water outlet 64 and a negative pressure port 61 communicating with the delivery chamber 41 are provided on the negative pressure generator 6, a first control valve for opening and closing the liquid outlet 113 due to negative pressure changes and a second control valve for opening and closing the negative pressure port 61 due to liquid level changes are provided in the delivery chamber 41, and a water storage chamber 81 which can be connected and disconnected with the outside atmosphere is provided at the water outlet 64.

[0033] In an embodiment of the present invention, a water storage chamber 81 that can be connected 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 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 for flushing the additive comes from the water of the negative pressure generator 6, avoiding the additional provision of a 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.

[0034] 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 tank, and the delivery cavity 41 is connected to the drum or the inner tank.

[0035] 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, the upper shell 11 is divided into a left chamber and a right chamber, the right chamber forms a liquid storage chamber 114, the left chamber forms a water inlet chamber, which is used to feed 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, the water inlet 62 of the negative pressure generator 6 is connected to the water supply pipe 102 through the water inlet 111, and the top of the right chamber is provided with an additive for adding additives The liquid outlet 112 and the liquid outlet 113 of the delivery chamber 41 are connected to realize the vertical arrangement of the liquid storage chamber 114 and the delivery chamber 41, which is conducive to the additive in the liquid storage chamber 114 flowing into the delivery chamber 41; by dividing the interior of the housing 1 into a plurality of chambers, while realizing the automatic delivery of additives, the space inside the housing 1 can be reasonably utilized, so that the structure of the automatic delivery device is compact and the occupation of the external space is reduced; the additive can be a detergent for washing, a softener for rinsing, a disinfectant for disinfection, etc.;

[0036] Furthermore, a delivery shell 4 is provided in the lower shell, and a delivery cavity 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 open is provided at the open. A protrusion is provided on the top cover 5, and the protrusion 54 is cylindrical. The liquid outlet 113 of the liquid storage cavity 114 is connected with the delivery cavity 41 through the protrusion 54, and the check valve 415 opens and closes the opening at the lower end of the protrusion 54 to realize the opening and closing of the liquid outlet 113 of the liquid storage cavity 114.

[0037] A siphon structure 3 is also provided in the delivery chamber 41, and the siphon structure 3 has a float valve 31 for controlling the siphon structure 3 to produce a siphon effect; 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, and 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, and the liquid coming out of the delivery pipe 56 enters the washing machine through the delivery port 121 of the lower shell.

[0038] 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 .

[0039] 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, and the overflow port 92 is provided higher than the negative pressure port 61. The connection between the water storage chamber 81 and the overflow chamber 91 is provided lower than the negative pressure port 61.

[0040] In an embodiment of the present invention, specifically, the negative pressure generator 6 includes a negative pressure pipe 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 pipe 63, and a water storage pipe 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 pipe 8 intersects with the water outlet end of the negative pressure pipe 63, and the other end is connected to an overflow pipe 9 parallel to the negative pressure pipe 63 to form an overflow chamber 91. One end of the overflow pipe 9 is communicated with the water storage pipe 8, and the other end is provided with an overflow port 92.

[0041] Taking the negative pressure pipe 63 extending straightly in the up-down 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 straightly 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 setting of the overflow pipe 9 can prevent the water in the water storage pipe 8 from overflowing outward;

[0042] Furthermore, a storage tube 10 is provided at the intersection of the water storage tube 8 and the negative pressure tube 63, and a accommodating chamber 103 is formed inside the storage tube 10. A float valve 7 is provided in the accommodating chamber 103 for opening and closing 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.

[0043] Taking the negative pressure pipe 63 extending in the up-down direction as an example, the storage pipe 10 extends straight from top to bottom, and the negative pressure pipe 63, the storage pipe 10 and the water storage pipe 8 intersect to form a conversion chamber, and the connection between the negative pressure pipe 63 and the water storage pipe 8 is lower than the connection between the water storage pipe 8 and the overflow pipe 9; the float valve 7 is arranged in the accommodating chamber 103, and the float valve 7 can float up with the increase of the water level in the water storage chamber 81, and block the connection between the water storage chamber 81 and the overflow chamber 91 under the action of water pressure, so that the water storage chamber 81 is disconnected from the outside atmosphere and filled with water. When the float valve 7 is in the accommodating chamber 103, the water storage chamber 81 is connected with the overflow chamber 91, so that the water storage chamber 81 is connected with the outside atmosphere;

[0044] 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 .

[0045] Water is first introduced into the negative pressure generator 6. The water entering the negative pressure generator 6 to generate negative pressure continuously enters the water storage chamber 81 from the water outlet 64 of the negative pressure generator 6, so that the water level in the water storage chamber 81 continuously rises, and the water storage chamber 81 is filled with water. During this process, the float valve 7 in the accommodating chamber 103 is pressed downward by the water pressure of the water inflow and does not float up.

[0046] 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.

[0047] 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 water pressure of the inflowing water;

[0048] 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 obliquely from top to bottom, which is beneficial to the water pressure of the incoming water to push 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.

[0049] Since 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, and accurately block the connection between the water storage chamber 81 and the overflow chamber 91.

[0050] To be more specific, the water storage pipe 8 is provided with a narrowing section 811 which gradually shrinks into the overflow chamber 91 and inclines along with the water storage pipe 8 at the connecting point between the water storage chamber 81 and the overflow chamber 91. The inner periphery of the small-sized end of the narrowing section 811 forms an opening communicating with the overflow chamber 91, and the radial dimension of the float valve 7 is smaller than the radial dimension of the opening.

[0051] 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, the float valve 7 is spherical, and the outer periphery of the float valve 7 is 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.

[0052] It should be noted that the water in the negative pressure pipe 63 enters the water storage pipe 8 from the conversion chamber, and the negative pressure pipe 63 is filled with water at the same time as the water storage pipe 8 is filled with water;

[0053] The liquid inlet 413 of the delivery chamber 41 is arranged 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 negative pressure port 61 and the liquid inlet 413 of the delivery chamber 41 in sequence to flush the additive into the delivery chamber 41, so that the liquid inlet 413 of the delivery chamber 41 serves as the water inlet 412 of the delivery chamber 41.

[0054] The delivery chamber 41 is provided with a control valve, which is a second float valve 31. The delivery chamber 41 is provided with a guide chamber for guiding the movement of the second float valve 31. The guide chamber is directly opposite to 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.

[0055] When the water storage pipe 8 is filled with water, the delivery chamber 41 is filled with additives. According to the time when the water storage pipe 8 is filled with water, the amount of additives entering the delivery chamber 41 from the liquid storage chamber 114 is obtained, so that the delivery chamber 41 can be used as a constant volume chamber, thereby knowing the amount of additives delivered by the automatic delivery device to the washing machine or dishwasher at one time.

[0056] 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.

[0057] The negative pressure pipe 63 and the water storage pipe 8 are located in the lower housing, and the water inlet 62 of the negative pressure pipe 63 extends into the left chamber;

[0058] 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 with the negative pressure pipe 63 and the water storage pipe 8 .

[0059] 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 with the negative pressure tube 63 and the water storage tube 8, and the other end is provided with a drain port 105, and a pressure relief valve 106 is provided at the drain port 105 for opening and closing the drain port 105 due to changes in water pressure. The pressure relief valve 106 is arranged outside the accommodating chamber 103, and a water hole 104 communicating with the drain port 105 is provided on the accommodating chamber 103, and the float valve 7 opens and closes the water hole 104 due to changes in water pressure.

[0060] like Figure 2 and Figure 5 As shown, in the 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 open the drain outlet 105 on the one hand to discharge the water in the pipe, and to close the drain outlet 105 on the other hand 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.

[0061] Specifically, the inner wall of the storage tube 10 is provided with an annular dividing rib 107 coaxial with the storage tube 10, and 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 communicated 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.

[0062] 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.

[0063] The annular partition cavity gradually inclines from top to bottom into the first cavity 101 and forms a receiving cavity 103 matching the float valve 7 with the inner wall of the first cavity 101;

[0064] 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 at the outer periphery of 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.

[0065] 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 .

[0066] 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.

[0067] Furthermore, the drain outlet 105 is arranged 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.

[0068] Specifically, when water is first introduced into the negative pressure generator 6, the float valve 7 is pressed downward by the water pressure of the water in the accommodating chamber 103, and the float valve 7 is tightly abutted against the inner wall of the accommodating chamber 103 to block 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.

[0069] Stop feeding water into the negative pressure generator 6, the water pressure of the water disappears, the float valve 7 floats to the water surface of the water storage chamber 81 under the action of buoyancy, the reset spring 1062 stretches, 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;

[0070] Water is introduced into the negative pressure generator 6 for the second time. The float valve 7 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. The valve core 1061 moves downward under the action of the water pressure of the inflowing water to block the drain port 105, and the return spring 1062 is compressed.

[0071] 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.

[0072] The method of placing the additive placing device is as follows:

[0073] When water is first introduced into the negative pressure pipe 63, negative pressure is generated in the negative pressure pipe 63, and the negative pressure sucks the delivery chamber 41, so that the check valve 415 is automatically opened. As water is continuously introduced into the negative pressure pipe 63, the additive in the liquid storage chamber 114 is continuously sucked into the delivery chamber 41. At this time, the float valve 7 moves downward under the action of the water pressure of the incoming water to block the water hole 104. The float valve 7 drives the valve core 1061 to move downward, and the valve core 1061 blocks the drain port 105. The return spring 1062 is compressed, and the water in the negative pressure pipe 63 continuously enters the water storage pipe 8.

[0074] After the negative pressure pipe 63 is filled with water for a set time, the water storage pipe 8 is filled with water, and the delivery chamber 41 is filled with additives. The float valve 1 414 blocks the liquid inlet 413 of the delivery chamber 41, and then blocks the negative pressure port 61. The inside of the delivery chamber 41 is no longer sucked, so that the check valve 415 is automatically closed. The pressure in the delivery chamber 41 is not enough to open the float valve 2 31 to make the siphon structure 3 produce a siphon effect.

[0075] After the injection cavity 41 is full of additives, water is stopped from entering the negative pressure pipe 63. Under the buoyancy of water, the float valve 7 floats up to the water surface of the water storage chamber, the return spring 1062 is extended, the valve core 1061 is reset, and the drain port 105 is opened.

[0076] Water is introduced into the negative pressure pipe 63 for the second time. Under the action of the water pressure of the inflowing water, 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 inflowing 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 to wash the additive in the delivery chamber 41. The water pressure opens the float valve 2 31 in the siphon structure 3. 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, and then delivered into the washing machine from the delivery port 121 of the lower housing 12 to achieve the delivery of the additive.

[0077] After the flushing additive is completed, 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 stored in the water storage pipe 8 and the negative pressure pipe 63 is discharged from the drain port 105 into the washing machine.

[0078] Embodiment 2

[0079] like Figure 6 As shown, a drum washing machine is provided in an embodiment of the present invention, including a drum 400, wherein a door 200 which can be opened and closed correspondingly is 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 circuit 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 circuit 102.

[0080] 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.

[0081] In the embodiment of the present invention, the automatic dispensing device 100 may be any structure in the prior art that can realize the automatic dispensing function of washing additives in batches and in fixed quantities; for example: the automatic dispensing device described in the following embodiment 1 or 2.

[0082] In the 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 communicated with 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 additive stored in the liquid storage chamber 114 into the delivery chamber 41; the delivery chamber 41 has a delivery port 411, and the delivery port 411 is communicated with the drum 400, and is used to deliver the washing additive and / or the incoming water flow in the delivery chamber 41 into the drum 400.

[0083] In the embodiment of the present invention, the automatic dispensing mechanism 101 can be any existing structure that can pump the detergent additive contained in the liquid storage chamber 114 into the dispensing chamber 41, for example:

[0084] The automatic delivery mechanism 101 includes:

[0085] A pump, the inlet of the pump is connected to the liquid outlet 113 of the liquid storage chamber 114, and the outlet of the pump 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 when the pump is working;

[0086] Also for example:

[0087] The automatic delivery mechanism 101 includes:

[0088] 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 113 of the liquid storage chamber 114, and the negative pressure flow channel is connected in series to the water supply waterway 102, 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 114 into the delivery chamber 41.

[0089] Another example:

[0090] Automatic delivery mechanisms include:

[0091] 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 controllably connected to the liquid inlet 413 of the delivery chamber 41 via the water circuit, and is used to deliver the washing additives 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 assembly, for example: any one or a combination of an electric control valve, a float valve, a push valve, etc.

[0092] Of course, the automatic detergent additive dispensing device 100 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.

[0093] In the embodiment of the present invention, the washing machine includes a housing 300, a drum 400 is installed in the housing 300, and a clothing delivery opening is provided at the housing 300 corresponding to the drum opening of the drum 400, which is used to form a passage for taking and placing clothing in the drum 400; generally, an outer drum is mounted outside the drum, the drum opening of the outer drum is opened coaxially and in the same direction as the drum opening, and a tubular, elastically stretchable window pad is connected between the drum opening of the outer drum and the clothing delivery opening to form a passage for taking and placing clothing; a machine door 200 that can be opened and closed corresponding to the clothing delivery opening is installed on the housing 300, and the automatic delivery device 100 is installed on the machine door 200. Preferably, a protrusion protruding toward the inside of the housing is provided on the machine door 200, and at least part of the protrusion extends into the drum opening of the drum 400, and the automatic delivery device 100 is installed on the protrusion, and the delivery opening 411 of the delivery chamber 41 of the automatic delivery device 100 is opened toward the inside of the drum 400, so that the delivered washing additives and / or the incoming water flow directly flow into the drum 400 of the washing machine.

[0094] In the embodiment of the present invention, a water supply circuit 102 is provided on the housing 300 of the washing machine, and a nozzle 103 is provided at the outlet of the water supply circuit 102, and the nozzle 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 circuit is provided on the water supply circuit 102.

[0095] 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 so that the user can observe the interior of the drum 400 from the staggered portion.

[0096] 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 ; a liquid outlet 113 of the liquid storage chamber 114 is located at the bottom of the chamber and is connected to the delivery chamber 41 via an automatic delivery mechanism 101 .

[0097] In the embodiment of the present invention, a siphon structure 3 is provided at the delivery port 411 of the delivery chamber 41 for intercepting and mixing the washing additives flowing into the delivery chamber 41 with the incoming water flow to form a washing additive mixed liquid, and delivering the formed washing additive mixed liquid into the drum 400 along with the incoming water flow.

[0098] 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, so as 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 to the delivery port 411 of the delivery chamber 41 along the gap between the siphon cap and the siphon tube and the internal flow channel of the siphon tube.

[0099] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. An 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.

2. The automatic delivery device according to claim 1, 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.

3. The automatic delivery device according to claim 2, 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 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.

4. The automatic delivery device according to claim 3, 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.

5. The automatic delivery device according to claim 4, 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.

6. The automatic delivery device according to claim 5, 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.

7. The automatic delivery device according to claim 4, 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.

8. The automatic delivery device according to claim 7, 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.

9. The automatic delivery device according to claim 8, 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.

10. The automatic delivery device according to any one of claims 1 to 9, 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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