Automatic throwing device

Abstract

The invention provides an automatic throwing device. A liquid storage cavity and a throwing cavity are formed in the automatic throwing device, a liquid outlet communicated with the throwing cavity is formed in the liquid storage cavity, a water inlet is formed in the throwing cavity, and a switch structure is arranged in the throwing cavity and used for opening and closing the water inlet and opening and closing the liquid outlet in a linkage mode along with changes of the liquid level in the throwing cavity. The switch structure is arranged in the throwing cavity, the switch structure can open the liquid outlet while opening the water inlet under the action of the water inlet pressure, automatic opening of the liquid outlet is achieved, and additives in the liquid storage cavity can automatically flow into the throwing cavity to be thrown; the situation that a suction pump is additionally arranged to serve as a power source to pump the additive in the liquid storage cavity into the feeding cavity for feeding is avoided, energy consumption is reduced, and the production and maintenance cost is saved.

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 widely used. In order to facilitate the washing of clothes, tableware, etc., household appliances such as washing machines and dishwashers are generally equipped with an automatic additive delivery device for delivering additives, and the additives are detergents for washing, disinfectants for disinfection, etc., which are convenient for users to use. The existing automatic additive delivery device includes a liquid storage box and a water box. A suction pump is provided on the pipeline connected between the liquid storage box and the water box. When the additive is delivered, the suction pump extracts the additive from the liquid storage box. The additive first enters the water box and mixes with the washing water, and then is delivered to the washing tub of the washing machine or the inner tank of the dishwasher. The above-mentioned automatic additive delivery device needs to be equipped with a suction pump as a power source to provide power to draw the additive from the liquid storage box to the water box, which not only consumes energy, but also increases the production and maintenance costs.

[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 additive delivery device. By providing 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, so as to realize the 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 provide an additional suction pump as a power source to extract the additive in the liquid storage chamber into the delivery chamber for delivery, thereby achieving the purpose of reducing energy consumption and saving production and maintenance costs.

[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 dispensing device, wherein a liquid storage chamber and a dispensing chamber are provided in the automatic dispensing device, 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 be opened and closed as the liquid level in the dispensing chamber changes.

[0007] Furthermore, the switch structure includes a push-pop switch arranged at the water inlet and a floating switch arranged at the liquid outlet. The push-pop switch reciprocates relative to the water inlet in the direction of water inlet, and the floating switch reciprocates relative to the liquid outlet in the direction of liquid outlet. The floating switch switches between being linked with the push-pop switch and moving relative to the push-pop switch.

[0008] 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.

[0009] 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 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.

[0010] 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.

[0011] Furthermore, a circumferentially extending torsion spring is provided on the outer peripheral wall of the assembly through hole, and 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. The torsion spring provides a reset force for resetting the floating switch and the push rod.

[0012] 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. 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.

[0013] Furthermore, the slide groove includes a first groove section and a second groove section and a third groove section formed by bifurcation of the first groove section. A conversion cavity is formed at the intersection of the first groove section, the second groove section and the third groove section. A convex rib is provided in the conversion cavity. The convex rib is provided with a recessed portion recessed toward the first groove section. The recessed portion cooperates with the inner wall of the conversion cavity to form a locking groove. The locking section moves periodically in the first groove section, the second groove section, the locking groove and the third groove section in turn.

[0014] Furthermore, the delivery chamber is provided with a cylindrical guide portion protruding out of 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, and 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 around the inner circumference of the annular limiting portion.

[0015] 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.

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

[0017] 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, thereby reducing energy consumption and saving production and maintenance costs.

[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 the automatic additive delivery device provided in the first embodiment of the present invention;

[0021] Figure 2 An exploded view of the automatic additive delivery device provided in Embodiment 1 of the present invention;

[0022] Figure 3 A schematic diagram of the structure inside the lower housing provided in the first embodiment of the present invention;

[0023] Figure 4 A schematic diagram of the positional relationship between the locking rod and the sliding slot provided in the first embodiment of the present invention;

[0024] Figure 5 A schematic diagram of the structure of a slideway provided in Embodiment 1 of the present invention;

[0025] Figure 6 A schematic diagram of the structure of a floating switch provided in Embodiment 1 of the present invention;

[0026] Figure 7 A schematic diagram of the structure of the automatic delivery device provided in the first embodiment of the present invention from one perspective;

[0027] Figure 8 for Figure 7 Cross-section at AA;

[0028] Fig. 9 This is a schematic structural diagram of a drum washing machine provided in Embodiment 2 of the present invention.

[0029] Icons: 100-automatic dispensing device; 101-automatic dispensing mechanism; 102-water supply waterway; 103-sprinkler; 104-control valve; 200-machine door; 300-housing; 400-drum; 1-housing; 11-upper housing; 111-water inlet; 112-addition port; 113-liquid outlet; 114-liquid storage chamber; 12-lower housing; 2-switch structure; 21-push switch; 211-push rod; 2111-slideway; 2111a-first section groove; 2111b-second section groove; 2111c-third section groove; 2112-locking groove; 2113-conversion chamber; 2114-convex rib; 2115-recessed part; 212-reset spring; 213 - raised portion; 2131-assembly through hole; 2132-strip slide; 2133-protruding portion; 214-mounting seat; 215-locking rod; 2151-locking section; 216-spring; 2161-first bending portion; 2162-second bending portion; 217-positioning hole; 22-floating switch; 221-assembly portion; 2211-slider; 222-switch portion; 2221-groove portion; 2222-sealing portion; 23-torsion spring; 3-siphon structure; 4-delivery shell; 41-delivery chamber; 411-delivery port; 412-water inlet; 413-liquid inlet; 5-top cover; 51-guide portion; 511-annular limiting portion; 52-upper protrusion; 53-lower protrusion.

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

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

[0032] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

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

[0034] Embodiment 1

[0035] like Figure 1-8 As shown, the present invention provides an automatic additive delivery device, wherein a liquid storage chamber 114 and a delivery chamber 41 are provided in the automatic delivery device 100, the liquid storage chamber 114 is provided with a liquid outlet 113 communicating with the delivery chamber 41, the delivery chamber 41 is provided with a water inlet 412, and a switch structure 2 is provided in the delivery chamber 412 for opening and closing the water inlet 412, and for opening and closing the liquid outlet 113 in conjunction with changes in the liquid level in the delivery chamber 41.

[0036] In the embodiment of the present invention, a switch structure 2 is provided in the delivery chamber 412. The switch structure 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 provide 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.

[0037] The additive delivery device 100 can be used in washing machines, dishwashers, etc. A delivery port 411 is provided on a delivery cavity 412, and the delivery port 411 is used to deliver the additive in the delivery 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 delivery cavity 412 is connected to the drum 400 or to the inner tank through the delivery port 411.

[0038] Taking the liquid storage chamber 114 and the delivery chamber 412 as an example, the liquid outlet 113 is arranged at the bottom of the liquid storage chamber 114, and the water inlet 412 is arranged 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, the top of the right chamber is provided with an addition port 112 for adding additives and a liquid outlet 113 for the additives to enter the delivery chamber 41, so that the liquid storage chamber 114 and the delivery chamber 41 are arranged up and down, which is conducive to the additives in the liquid storage chamber 114 flowing into the delivery chamber 41; by dividing the inside 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 additives can be detergents for washing, softeners for rinsing, disinfectants for disinfection, etc.;

[0039] Furthermore, a delivery shell 4 is provided in the lower shell 12, 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 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 cavity and the liquid inlet 413 of the delivery cavity 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 cavity 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 cavity can enter the washing machine from the outlet of the lower shell 12.

[0040] like Figure 3 and Figure 8 As shown, in an embodiment of the present invention, the switch structure 2 includes a push switch 21 and a floating switch 22. The push switch 21 reciprocates in the direction of water inlet relative to the water inlet 412, and the floating switch 22 reciprocates in the direction of liquid outlet relative to the liquid outlet 113. The floating switch 22 switches between being linked with the push switch 21 and moving relative to the push switch 21.

[0041] In the embodiment of the present invention, the push switch 21 opens the water inlet 412 under the action of the water pressure of the inlet water, and closes the water inlet 412 after the water pressure of the inlet water disappears. The push switch 21 can be pushed by the water pressure of the inlet water to drive the floating switch 22 to move, so as to open the liquid outlet 113. The floating switch 22 moves under the action of the buoyancy of the liquid to close the liquid outlet 113. The push switch 21 and the floating switch 22 can realize the automatic opening and closing of the liquid outlet 113 and the automatic opening and closing of the water inlet 412.

[0042] The linkage between the floating switch 22 and the push switch 21 can realize that the push switch 21 is pushed by the water pressure of the incoming water to drive the floating switch 22 to move, so that the liquid outlet 113 is opened; the relative movement of the floating switch 22 and the push switch 21 can realize that the floating switch 22 moves 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 arranged at the top of the delivery cavity 411 and the liquid outlet 113 is arranged at the top of the liquid storage cavity, the liquid outlet direction and the water inlet direction are the up and down directions.

[0043] 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, and 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.

[0044] Taking the upward and downward extension of the ejector rod as an example, the ejector rod 211 moves downward under the push of the water pressure to open the water inlet 412, and moves upward to close the water inlet 412 after the water pressure disappears. The reset spring 212 provides a reset force for the ejector rod 211; the bottom of the ejector rod 211 is connected to the bottom of the delivery chamber 41 via the reset spring 212, and the floating switch 22 and the ejector rod 211 are linked in the upward and downward directions, or move relative to each other.

[0045] 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.

[0046] 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 ejector rod 211 until the locking section 2151 is inserted into the locking groove 2112, and the ejector rod 211 moves upward to reset after the locking section 2151 is separated from the locking groove 2112.

[0047] The locking rod 215 also includes a connecting section and a mounting section extending up and down. The mounting section and the locking section 2151 are respectively arranged at both ends of the connecting section. A mounting seat 214 is arranged on the side wall of the delivery cavity 41, and the mounting section is installed on the mounting seat 214.

[0048] The push-to-pop switch 21 further includes a spring sheet 216 extending upward and downward, the top of the spring sheet 216 is bent upward to form a first bending portion 2161 in the shape of a groove, the notch of the first bending portion 2161 is arranged to face away from the slide slot 2111, the left groove side wall and the right groove side wall of the first bending portion 2161 located on the left and right sides of the notch are respectively provided with openings, a positioning hole 217 is set on the lower groove side wall of the first bending 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 bending portion are connected to each other. The upper groove side walls of 2161 are parallel, the mounting section is abutted against the upper groove side walls of the first bending portion 2161, and the upper groove side walls of the first bending 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 bending 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.

[0049] The bottom of the spring piece 216 is bent downward to form a groove-shaped second bending portion 2162. The notch of the second bending portion 2162 is set toward the slide slot, and the notch of the second bending portion 2162 is set upward. The left groove side wall and the right groove side wall of the second bending portion 2162 on the left and right sides of the notch are respectively opened. The bottom of the connecting section is against the front groove side wall of the second bending portion 2162 located at the front side of the notch. The second bending 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.

[0050] like Figure 4 and Figure 5 As shown, the slide groove 2111 includes a first groove section 2111a and a second groove section 2111b and a third groove section 2111c formed by the bifurcation of the first groove section 2111a. A conversion cavity 2113 is formed at the intersection of the first groove section 2111a, the second groove section 2111b and the third groove section 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 groove section 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 groove section 2114, the second groove section 2111b, the locking groove 2112 and the third groove section 2111c in turn.

[0051] 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 at the upper part of the first section groove 2111a, and the convex 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.

[0052] It should be noted that the position of the locking section 2151 itself does not change during the movement of the ejector rod 211 , but the relative position of the locking section 2151 relative to the moving ejector rod 211 will change.

[0053] After the liquid outlet 113 is opened, liquid continuously enters the delivery chamber 41. As the floating switch 22 follows the continuous rise of the liquid level in the delivery chamber 41 until the liquid outlet 113 is closed, the amount of additive entering the delivery 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, so that the delivery chamber 41 can be used as a constant volume chamber, thereby knowing the amount of additive that the automatic delivery device delivers to the washing machine or dishwasher at one time.

[0054] like Figure 3 and Figure 8 As shown, further, a cylindrical guide portion 51 protruding out of 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 ejector 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 blocking the opening formed around the inner circumference of the annular limiting portion 511.

[0055] Taking the upward and downward extension of the ejector 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 ejector 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 limiting portion 511, and blocks the opening of the annular limiting portion 511, thereby blocking the water inlet 412 of the delivery chamber.

[0056] When the liquid outlet 113 is in the closed state, the bottom of the annular limiting portion 511 abuts against the top of the ejector rod 211 and blocks the opening of the annular limiting portion 511, so that when the water inlet is closed, the washing water entering the guide portion 51 can completely contact the ejector rod 211, providing a large thrust for the ejector rod 211;

[0057] The external washing water enters the guide part 51 from the water inlet at the top of the guide part 51, passes through the annular limiter 511 and 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 limiter 511 separates from the push rod 211, and the water inlet 412 of the delivery chamber is opened. The washing water enters the delivery chamber 41 from the water outlet at the bottom of the guide part 51, and the liquid outlet 113 is switched from the closed state to the open state.

[0058] 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 ejector rod moving upward to prevent the ejector rod 211 from moving upward too much.

[0059] 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 floating 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.

[0060] More specifically, the guide portion 51 above the annular limiting portion 511 is gradually narrowed 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 .

[0061] like Figure 3 and Figure 6 As shown, in the embodiment of the present invention, the outer periphery of the ejector rod 211 is provided with a radially protruding protrusion 213, the protrusion 213 is provided with an assembly through hole 2131, the axis line of the assembly through hole 2131 is parallel to the axis line of the ejector rod 211, the floating switch 22 is a columnar structure, the floating switch 22 is embedded in the assembly through hole 2131, and is slidably connected with the inner periphery of the assembly through hole 2131, and the end wall of the floating switch 22 is provided with a blocking portion 2222 for blocking the liquid outlet 113, and the blocking portion 2222 is exposed outside the assembly through hole 2131.

[0062] 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, so that the floating switch 22 and the assembly hole 2131 generate relative movement in the up and down directions, and the blocking portion 2222 is arranged on the top end wall of the floating switch 22.

[0063] The assembly through hole 2131 is a circular hole, and the floating switch 22 is a cylindrical structure. The floating switch 22 is coaxially embedded in the assembly through hole 2131. The arrangement of the assembly through hole 2131 enables the floating switch 22 to move up and down with the ejector rod 211, and the floating switch 22 can generate relative movement with the ejector rod 211 in the up and down directions.

[0064] Specifically, the blocking portion 2222 is a cylindrical structure coaxial with the floating switch 22, and a delivery chamber liquid inlet 413 is provided on the top cover 5, which is located below the liquid storage chamber liquid outlet 113 and overlaps 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, and the top end wall of the blocking portion 2222 closes the delivery chamber liquid inlet 41 or opens the delivery chamber liquid inlet 41.

[0065] 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, and the top end wall of the blocking portion 2222 blocks the bottom end of the liquid inlet 41 of the delivery chamber.

[0066] 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.

[0067] 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 2131 is provided on the peripheral wall thereof, wherein the strip slide 2132 has one closed end and the other open end, and 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.

[0068] Taking the push rod extending up and down as an example, the top of the strip slideway is an open end, and the slider 2211 can slide up and down in the strip slideway 2132;

[0069] The floating switch 22 includes a mounting portion 221 and a switch portion 222. The mounting portion 221 is in a groove shape, and the notch of the mounting portion 221 is arranged upward. The mounting portion 221 and the switch portion 222 are both 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 abutting portion. The free end of the first abutting portion axially protrudes downward to form a second abutting portion. The first abutting portion, the second abutting 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.

[0070] The assembly portion 221 and the switch portion 222 are both embedded in the assembly through hole 2131 , and the slider 2211 slides on the strip slideway 2132 along the up and down directions, which can guide the relative movement between the assembly through hole 2131 and the assembly portion 221 .

[0071] Furthermore, a circumferentially extending torsion spring 23 is provided on the outer peripheral wall of the assembly through hole 2131, and the middle part of the torsion spring 23 is sleeved on the outer periphery of the slider 2211 passing through the strip slide 2132. The outer peripheral wall of the assembly through hole 2131 is respectively 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 resetting the push rod.

[0072] The delivery method of the automatic delivery device of this application is as follows:

[0073] Taking the push rod extending up and down as an example, the water supply waterway 102 is connected, the water supply waterway 102 flows into the guide part 51, the water inlet 412 is opened, and the water pressure of the washing water impacts the push rod 211 downward, so that the push rod 211 moves downward, the return spring 212 is compressed, and the push rod 211 moves downward to drive the floating switch 22 to move downward, and at the same time, the locking section 2151 moves upward from the first section groove 2111a to the second section groove 2111b, so that the liquid outlet 113 is opened;

[0074] When the liquid outlet 113 is opened, the washing water stops flowing into the guide part, so that the push rod 211 moves upward, and the reset spring 212 stretches but does not reset. The push rod 211 moves upward, driving the floating switch 22 to move upward, and at the same time, the locking section 2151 moves downward from the first section 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 are in an open state for a period of time.

[0075] 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 delivery chamber 41 by its own gravity. As the liquid level in the delivery chamber 41 rises, the buoyancy of the liquid increases continuously, causing the float switch 22 to float up, and 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 reset spring 212 remains unchanged, and the water inlet 412 is in the open state. As the float switch 22 moves upward, relative movement occurs between the push rod 211 and the float switch 22, and the torsion spring 23 stretches.

[0076] After the liquid outlet 113 is closed, the washing water enters the guide portion 51, 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 push rod 211 moves downward to cause the locking section 2151 to disengage from the locking groove 2112, and the locking section 2151 enters the second groove 2111b. In this process, the float switch 22 is always closed by the large buoyancy of the liquid. As the push rod 211 moves downward, the push rod 211 and the float switch 22 generate relative movement again, and the torsion spring 23 continues to extend.

[0077] Washing water continuously flows into the guide portion 51, the washing water continuously impacts the push rod 211, and continuously flows into 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 flushed for a certain period of time, the washing water stops flowing into the guide portion 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 push 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 and emptied through the siphon structure 3. In this process, the push 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.

[0078] Embodiment 2

[0079] like Fig. 9 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 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.

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

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

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

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

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

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

8. The automatic delivery device according to claim 7, characterized in that: The slide groove includes a first groove section and a second groove section and a third groove section formed by the bifurcation of the first groove section. A conversion cavity is formed at the intersection of the first groove section, the second groove section and the third groove section. A convex rib is arranged in the conversion cavity. A recessed portion that is recessed toward the first groove section is arranged on the convex rib. The recessed portion cooperates with the inner wall of the conversion cavity to form a locking groove. The locking section moves periodically in the first groove section, the second groove section, the locking groove and the third groove section in turn.

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

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 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.

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