Automatic dispensing device of household appliance and household appliance

Abstract

The application discloses an automatic feeding device of household electrical appliances and the household electrical appliances, and belongs to the household electrical appliances field. The automatic feeding device comprises a liquid storage box, the liquid storage box is provided with at least one additive cavity, and further comprises a safety switch and a control mechanism which is at least partially inserted into the additive cavity. When the liquid level of the liquid injected into the additive cavity reaches a liquid level setting height, the control mechanism is connected with the safety switch and controls the safety switch to be closed. When the liquid level of the additive injected into the additive cavity in the automatic feeding device is higher than the liquid level setting height, a signal of stopping injecting the additive into the additive cavity can be sent, so that the liquid level of the additive in the additive cavity is prevented from being too high and the overflow of the additive is avoided.

Description

Technical Field

[0001] This invention belongs to the field of household appliance technology, specifically, it relates to an automatic dispensing device and household appliance equipment. Background Technology

[0002] With the development of technology, more and more household products are becoming automated, such as washing machines, some of which now have water inlet systems. These systems can automatically identify the type and quantity of clothes and then accurately dispense the appropriate amount of detergent without manual intervention, saving both time and effort. The water inlet system mainly consists of three parts: a sensor, a dispensing machine, and a control module. First, the sensor detects the type and quantity of clothes. Then, the dispensing machine accurately dispenses the detergent based on the sensor's signal. Finally, the control module receives signals from the sensor and the dispensing machine and controls the washing machine according to the preset washing program.

[0003] Chinese Patent Application Publication No. CN109957931A discloses an automatic dispensing device and a washing machine, which includes a detergent dispenser with at least one chamber for holding detergent. The top of the chamber has an injection port, and one side of the injection port has a downwardly protruding rib with at least one horizontal scale line. Each horizontal scale line is flush with the corresponding amount of detergent liquid level in the chamber. The injection port is a horizontally oriented square opening, and the rib is located in the middle of the rear side of the square opening. The rib extends along a slope that gradually slopes forward from top to bottom. The detergent dispenser is fitted with a pressure rod that is plugged into at one end, and the other end of the pressure rod... The device features an outwardly protruding latch, which retracts into the detergent dispenser to release the locking mechanism when the user presses the lever. The latch comprises a vertically arranged plate extending perpendicular to the direction of the detergent dispenser's pull-out movement. Both ends of the plate have flaps that bend towards the rear of the detergent dispenser. The lower end of the latch is detachably connected to the lever. A vertically extending mounting rod is located at the lower end of the latch, with a radially protruding locking protrusion at its lower end. The lever has an installation section at its front end, which has a slot for engaging the mounting rod. The horizontal distance between the front and rear ends of the slot is increased to guide the mounting rod to slide in and engage with the locking protrusion for fixation.

[0004] When too much additive is added to the additive chamber of the automatic dispensing device, the water level in the additive chamber may become too high when the washing machine injects water into the additive chamber, which may cause the additive to overflow or become blocked.

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

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art. One of the objectives of the present invention is to provide an automatic dispensing device for home appliances. When the liquid level of the additive injected into the additive chamber is higher than the set height of the liquid surface, the safety switch can be controlled to close. After the safety switch is electrically connected to the control module and alarm module of the home appliance, the alarm module can issue an alarm signal when the safety switch is closed.

[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0008] An automatic dispensing device for a household appliance includes a liquid storage box, the liquid storage box having at least one additive chamber, and further includes:

[0009] Safety switch;

[0010] The control mechanism extends at least partially into the additive chamber. When the liquid level of the liquid injected into the additive chamber reaches a set height, the control mechanism contacts the safety switch and controls the safety switch to close.

[0011] Furthermore, the first end of the control mechanism extends into the additive chamber and can float on the surface of the liquid. When the liquid level injected into the additive chamber reaches a set height, the second end of the control mechanism contacts the safety switch and controls the safety switch to close.

[0012] Furthermore, the control mechanism includes a balance bar rotatably mounted on the liquid storage box. The first end of the balance bar extends into the additive chamber. When the first end of the balance bar rises with the liquid level in the additive chamber and exceeds the set height of the liquid level, the second end of the balance bar descends to control the safety switch to close.

[0013] Preferably, a float is provided at the first end of the balance bar;

[0014] Preferably, the safety switch is a push-button switch with the button facing upwards, and the second end of the balance bar is located above the button of the safety switch;

[0015] More preferably, the safety switch is located on the outside of the liquid storage box.

[0016] Furthermore, a horizontally arranged rotating arm is provided on the liquid storage box, the rotating arm is rotatably connected to the liquid storage box, and the balance bar is connected to the rotating arm;

[0017] Preferably, the liquid storage box is provided with an installation cavity that is not in communication with the additive chamber, and the rotating arm is rotatably disposed within the installation cavity;

[0018] More preferably, a support frame is provided inside the mounting cavity, and the rotating arm is rotatably connected to the support frame.

[0019] Furthermore, a connecting rod intersecting with the rotating arm is provided on the side wall of the rotating arm, and the balance bar is connected to the connecting rod;

[0020] Preferably, the balance bar is position-adjustable along the extension direction of the connecting rod;

[0021] More preferably, the connecting rod is a threaded rod, and the balance bar is threaded onto the connecting rod.

[0022] Furthermore, the first end of the balance bar can rise and fall synchronously with the liquid level in the additive chamber;

[0023] Preferably, the balance bar includes a first part, a second part, and a third part, the second part being located between the first part and the third part, the end of the third part away from the second part extending into the additive chamber, the end of the first part away from the second part being located above the safety switch, the second part being connected to the rotating arm, and the weight of the third part and the float being greater than the weight of the first part.

[0024] More preferably, the first part, the second part, and the third part are integrally formed.

[0025] Furthermore, the second end of the balance bar is provided with a pressing part with a circular arc surface.

[0026] Furthermore, it also includes:

[0027] An overflow switch is connected to the top of the liquid storage box, has a sensing range, and the sensing range is located above the set height of the liquid level in the additive chamber;

[0028] When the first end of the control mechanism rises to the sensing range of the overflow switch, the overflow switch closes.

[0029] The second objective of this invention is to provide a household appliance.

[0030] The basic concept of the technical solution adopted in this invention is:

[0031] A household appliance includes a control module and an alarm module, wherein the alarm module is electrically connected to the control module, and the appliance also includes an automatic dispensing device. A safety switch is electrically connected to the control module, and when the safety switch is closed, the control module controls the alarm module to emit an alarm signal.

[0032] Preferably, the device also includes a display screen, the safety switch being electrically connected to the display screen, and the display screen being able to display the status of the safety switch.

[0033] Furthermore, it also includes: a power supply module, electrically connected to the control module.

[0034] An overflow switch is connected to the top of the liquid storage box, has a sensing range, and the sensing range is located above the set height of the liquid level in the additive chamber;

[0035] When the liquid level in the additive chamber exceeds the set liquid level, the overflow switch can sense the control mechanism and close.

[0036] The overflow switch is electrically connected to the control module. When the overflow switch is closed, the control module controls the power supply module to cut off the power.

[0037] Preferably, when the overflow switch is closed, the control module controls the alarm module to issue an alarm signal.

[0038] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0039] 1. When additive is injected into the additive chamber of the liquid storage box, the first end of the control mechanism will rise under the action of buoyancy. As the first end of the control mechanism rises, the second end of the control mechanism will move downward and control the safety switch. When the additive in the additive chamber reaches the set liquid level, the safety switch is in the closed state. When the safety switch is in the closed state, a stop signal is sent to the home appliance, and the alarm module of the home appliance will issue an alarm signal to remind the user to stop injecting additive into the additive chamber.

[0040] 2. If the additive in the additive chamber has reached the set liquid level and the additive continues to be injected, the first end of the control mechanism will continue to rise. When the first end of the control mechanism reaches the sensing range of the overflow switch, the overflow switch will close, indicating that the additive chamber is full. The power supply system of the household appliance will then stop supplying power to avoid causing greater danger.

[0041] Meanwhile, the present invention has a simple structure, a concise method, and significant effects, making it suitable for widespread use.

[0042] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0043] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0044] Figure 1 This is a schematic diagram of the structure of the automatic dispensing device for household appliances of the present invention;

[0045] Figure 2 This is a cross-sectional view of the automatic dispensing device for household appliances according to the present invention;

[0046] Figure 3 This is a schematic diagram of the control mechanism in the automatic dispensing device of the present invention.

[0047] In the diagram: 1. Liquid reservoir; 11. Divider; 101. Additive chamber; 102. Mounting chamber; 103. Notch; 2. Safety switch; 3. Control mechanism; 31. Balance bar; 311. First part; 3111. Pressing part; 312. Second part; 3121. Threaded hole; 313. Third part; 32. Float; 321. Magnetic component; 33. Support frame; 331. First support arm; 332. Second support arm; 34. Rotating arm; 35. Connecting rod; 4. Overflow switch.

[0048] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0049] To make the objectives, 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 with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0050] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0051] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0052] like Figures 1 to 3As shown, the automatic dispensing device for household appliances of the present invention includes a liquid storage box 1 with a top opening and a hollow interior. The interior of the liquid storage box 1 is divided into two chambers by a partition 11. One chamber is an additive chamber 101, and the other chamber is a mounting chamber 102. The additive chamber 101 is used to store additives. The additive chamber 101 and the mounting chamber 102 are not connected.

[0053] In this embodiment, a safety switch 2 is provided on the outer side of the cavity wall of the mounting cavity 102 away from the additive cavity 101, and the safety switch 2 is fixed to the liquid storage box 1. The safety switch 2 is a push-button switch, and the button of the safety switch 2 faces upward. When the button of the safety switch 2 is pressed, the safety switch 2 is closed. When the force applied to the button is released, the button is lifted, and the safety switch 2 is opened.

[0054] In this embodiment, a control mechanism 3 is installed inside the mounting cavity 102. The first end of the control mechanism 3 extends into the additive cavity 101 through the top of the cavity, and the second end extends above the safety switch 2. The first end of the control mechanism 3 can float on the surface of the additive liquid. When additive is injected into the additive cavity 101, the first end of the control mechanism 3 rises synchronously with the increase in the liquid level of the injected additive. As the first end of the control mechanism 3 rises, the second end of the control mechanism 3 moves downward. When the amount of additive injected into the additive cavity 101 reaches the set liquid level, the second end of the control mechanism 3 presses the button on the safety switch 2, closing the safety switch 2.

[0055] In this embodiment, the control mechanism 3 includes a balance bar 31 rotatably disposed inside the mounting cavity 102. The first end of the balance bar 31 extends into the interior of the additive cavity 101 through the top of the additive cavity 101, and the second end of the balance bar 31 extends above the safety switch 2.

[0056] Specifically, a notch 103 is provided on the top of the side wall of the mounting cavity 102 away from the additive cavity 101. The notch 103 is opposite to the balance bar 31, and the balance bar 31 can enter the top of the notch 103 and enter the interior of the notch 103. The balance bar 31 passes through the notch 103, so that the second end of the balance bar 31 is located above the safety switch 2.

[0057] In this embodiment, a float 32 is fixed to the first end of the balance bar 31, and the float 32 can float on the surface of the additive liquid. The float 32 can be a foam ball or a hollow plastic ball that can float on the water surface. Through the buoyancy of the float 32, the height of the first end of the balance bar 31 can rise and fall synchronously with the rise and fall of the liquid level of the additive injected into the additive chamber 101.

[0058] When additive is injected into the additive chamber 101, as the liquid level of the additive in the additive chamber 101 rises, the float 32 rises accordingly, thereby causing the first end of the balance rod 31 to rise. As the first end of the balance rod 31 gradually rises, the second end of the balance rod 31 gradually descends. When the liquid level of the additive injected into the additive chamber 101 reaches the set liquid level height, the second end of the balance rod 31 presses the button of the safety switch 2, causing the safety switch 2 to be in the closed state.

[0059] In this embodiment, the control mechanism 3 further includes a support frame 33 disposed inside the mounting cavity 102. The support frame 33 includes a first support arm 331 and a second support arm 332 that are horizontally spaced apart. The first support arm 331 and the second support arm 332 are both fixed on the side wall of the mounting cavity 102 away from the additive cavity 101.

[0060] In this embodiment, a rotating arm 34 is provided between the first support arm 331 and the second support arm 332. The rotating arm 34 is arranged laterally, with one end of the rotating arm 34 rotatably connected to the first support arm 331 and the other end of the rotating arm 34 rotatably connected to the second support arm 332.

[0061] In this embodiment, a connecting rod 35 is provided on the side wall of the rotating arm 34, and the connecting rod 35 is perpendicular to the rotating arm 34. The connecting rod 35 is rotatably connected to the rotating arm 34. The balance rod 31 is threadedly connected to the connecting rod 35. Since the balance rod 31 is inserted into the notch 103, when the connecting rod 35 is rotated, the notch 103 can restrict the balance rod 31 to rotate synchronously with the connecting rod 35, so that the position of the balance rod 31 can be adjusted along the extension direction of the connecting rod 35. By adjusting the position of the balance rod 31 in the extension direction of the connecting rod 35, the height of the balance rod 31 when the connecting rod 35 is in a vertical state can be adjusted.

[0062] In this embodiment, the notch 103 is located between the first support arm 331 and the second support arm 332, and the notch 103 is opposite to the connecting rod 35 on the rotating arm 34. When the balance bar 31 and the connecting rod 35 are installed together, the balance bar 31 is opposite to the notch 103. When the second end of the balance bar 31 moves downward, the balance bar 31 can enter the interior of the notch 103.

[0063] Specifically, the balance bar 31 includes a first part 311, a second part 312, and a third part 313, which are integrally formed. One end of the first part 311 is located above the safety switch 2, and the other end of the first part is connected to the second part 312. One end of the third part 313 extends into the additive chamber 101, and the other end of the third part 313 is connected to the second part 312. The float 32 is fixed to the end of the third part 313 that extends into the additive chamber 101. The weight of the third part 313 plus the float 32 is greater than the weight of the first part 311. The second part 312 is connected to the connecting rod 35 at the middle position of its extension direction.

[0064] Specifically, the connecting rod 35 is a threaded rod. A threaded hole 3121 is provided vertically through the second part 312, and the threaded hole 3121 matches the thread of the connecting rod 35. The threaded hole 3121 is located at the middle position in the extension direction of the second part 312. By connecting the second part 312 and the connecting rod 35 with a threaded connection, the position of the balance rod 31 in the extension direction of the connecting rod 35 can be adjusted. By adjusting the position of the balance rod 31 in the extension direction of the connecting rod 35, the height of the balance rod 31 when the connecting rod 35 is in a vertical state can be adjusted. By adjusting the height of the balance rod 31 when the connecting rod 35 is in a vertical state, the liquid level setting height of the additive inside the additive chamber 101 can be adjusted.

[0065] Preferably, in order to allow the first part 311 to smoothly press the button of the safety switch 2, a pressing part 3111 is provided at the end of the first part 311 away from the second part 312, which is perpendicular to the first part 311 and is arranged laterally. The pressing part 3111 is integrally formed with the first part 311. The cross-sectional area of ​​the pressing part 3111 is elliptical, so that the outer surface of the pressing part 3111 is an arc surface.

[0066] As the additive level inside the additive chamber 101 gradually decreases, because the third part 313 is heavier than the first part 311, the first end of the balance rod 31 decreases synchronously with the decrease in the additive level under the action of gravity. This causes the second end of the balance rod 31 to rise. When the second end of the balance rod 31 disengages from the safety switch 2, the safety switch 2 returns to the open state.

[0067] In this embodiment, an overflow switch 4 is fixed to the top outer side of the side wall of the additive chamber 101 facing away from the mounting chamber 102. The overflow switch has a certain sensing range at the top of the additive chamber 101. The sensing range of the overflow switch 4 is located above the set liquid level height of the additive chamber 101. When the first end of the control mechanism 3 is raised into the sensing range of the overflow switch 4, the overflow switch 4 closes.

[0068] Once the additive level in the additive chamber 101 reaches the set height, if more additive is injected into the additive chamber 101, the additive level in the additive chamber 101 will continue to rise, causing the height of the first end of the control mechanism 3 to continue to rise. When the first end of the control mechanism 3 rises to the sensing range of the overflow switch 4, the overflow switch 4 closes, indicating that the additive input into the additive chamber 101 is full.

[0069] Specifically, a magnetic element 321 is fixed inside the float 32. The overflow switch 4 is a magnetic induction proximity switch. The magnetic induction proximity switch works on the principle of electromagnetic induction. When a magnetic object approaches the switch, the coil inside the switch senses a change in the magnetic field. This change causes a change in the circuit state inside the switch, which in turn generates an electrical signal output. When the float 32 rises with the liquid level of the additive inside the additive chamber 101 into the sensing range of the overflow switch 4, the overflow switch 4 senses the magnetic element 321 inside the float 32. When the overflow switch 4 reacts to the magnetic element 321, the overflow switch 4 closes.

[0070] The present invention also discloses a household appliance that includes the automatic dispensing device disclosed herein. The household appliance of the present invention is exemplified by a washing machine.

[0071] In this embodiment, the home appliance includes a control module, an alarm module, and a power supply module. The safety switch 2, overflow switch 6, alarm module, power supply module, and control module are electrically connected. When the safety switch 2 is closed, it sends a stop signal to the control module. Upon receiving the stop signal from the safety switch 2, the control module sends an alarm command to the alarm module, which then issues an alarm signal according to the command.

[0072] Preferably, the home appliance also has a display screen, and the safety switch 2 is electrically connected to the display screen of the home appliance, which can display the status of the safety switch 2. When the safety switch 2 is in the closed state, the display screen shows that the safety switch 2 is closed; when the safety switch 2 is in the open state, the display screen shows that the safety switch 2 is open.

[0073] In other embodiments, the home appliance also includes a water supply module electrically connected to the control module. The water supply module supplies water to the home appliance, and the water supplied by the water supply module flows into the additive chamber 101 of the liquid storage box 1. The water flowing into the additive chamber 101 mixes with the additives in the additive chamber 101 to form an additive solution of the required concentration. As water enters the additive chamber 101, the liquid level in the additive chamber 101 gradually increases. When the liquid level exceeds the set liquid level height of the additive chamber 101, the safety switch 2 closes under the control of the control mechanism 3. When the safety switch 2 is in the closed state, the safety switch 2 sends a stop signal to the control module. After receiving the stop signal from the safety switch 2, the control module sends a water stop command to the water supply module, and the water supply module stops supplying water to the home appliance according to the water stop command issued by the control module.

[0074] In this embodiment, when the overflow switch 6 is closed, the overflow switch 6 sends a stop signal to the control module. After receiving the stop signal from the overflow switch 6, the control module sends an alarm command to the alarm module, and the alarm module sends an alarm signal according to the alarm command sent by the control module.

[0075] When the overflow switch 6 sends a stop signal to the control module, the control module sends a power-off command to the power supply module after receiving the stop signal from the overflow switch 6. The power supply module then cuts off the power according to the power-off command sent by the control module, thus disconnecting the power to the household appliances and preventing greater danger.

[0076] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An automatic dispensing device for household appliances, comprising a liquid storage box (1), wherein the liquid storage box (1) is provided with at least one additive chamber (101), characterized in that, Also includes: Safety switch (2); The control mechanism (3) extends at least partially into the additive chamber (101). When the liquid level of the liquid injected into the additive chamber (101) reaches the set liquid level height, the control mechanism (3) contacts the safety switch (2) and controls the safety switch (2) to close.

2. The automatic dispensing device for household appliances according to claim 1, characterized in that, The first end of the control mechanism (3) extends into the additive chamber (101) and can float on the surface of the liquid. When the liquid level of the liquid injected into the additive chamber (101) reaches the set height, the second end of the control mechanism (3) contacts the safety switch (2) and controls the safety switch (2) to close.

3. The automatic dispensing device for household appliances according to claim 2, characterized in that, The control mechanism (3) includes a balance bar (31) rotatably mounted on the liquid storage box (1). The first end of the balance bar (31) extends into the additive chamber (101). When the first end of the balance bar (31) rises with the liquid level in the additive chamber (101) and exceeds the set height of the liquid level, the second end of the balance bar (31) descends to control the safety switch (2) to close. Preferably, a float (32) is provided at the first end of the balance bar (31); Preferably, the safety switch (2) is a push-button switch with the button facing upwards, and the second end of the balance bar (31) is located above the button of the safety switch (2); More preferably, the safety switch (2) is located on the outside of the liquid storage box (1).

4. The automatic dispensing device for household appliances according to claim 3, characterized in that, A horizontally arranged rotating arm (34) is provided on the liquid storage box (1), the rotating arm (34) is rotatably connected to the liquid storage box (1), and the balance bar (31) is connected to the rotating arm (34); Preferably, the liquid storage box (1) is provided with an installation cavity (102) that is not in communication with the additive cavity (101), and the rotating arm (34) is rotatably disposed in the installation cavity (102); More preferably, a support frame (33) is provided in the mounting cavity (102), and the rotating arm (34) is rotatably connected to the support frame (33).

5. An automatic dispensing device for household appliances according to claim 4, characterized in that, A connecting rod (35) is provided on the side wall of the rotating arm (34) and intersects with the rotating arm (34), and the balance rod (31) is connected to the connecting rod (35); Preferably, the balance bar (31) is position-adjustable along the extension direction of the connecting rod (35); More preferably, the connecting rod (35) is a threaded rod, and the balance rod (31) is threadedly connected to the connecting rod (35).

6. An automatic dispensing device for household appliances according to claim 4 or 5, characterized in that, The first end of the balance bar (31) can rise and fall synchronously with the liquid level in the additive chamber (101); Preferably, the balance bar (31) includes a first part (311), a second part (312) and a third part (313), the second part (312) is located between the first part (311) and the third part (313), the end of the third part (313) away from the second part (312) extends into the additive chamber (101), the end of the first part (311) away from the second part (312) is located above the safety switch (2), the second part (312) is connected to the rotating arm (34), and the weight of the third part (313) and the float (32) is greater than the weight of the first part (311); More preferably, the first part (311), the second part (312) and the third part (313) are integrally formed.

7. An automatic dispensing device for household appliances according to any one of claims 3 to 6, characterized in that, The second end of the balance bar (31) is provided with a pressing part (3111) with a circular arc surface.

8. An automatic dispensing device for household appliances according to any one of claims 2 to 7, characterized in that, Also includes: An overflow switch (4) is connected to the top of the liquid storage box (1), has a sensing range and the sensing range is located above the set height of the liquid level in the additive chamber (101); When the first end of the control mechanism (3) rises to the sensing range of the overflow switch (4), the overflow switch (4) closes.

9. A household appliance, comprising a control module and an alarm module, wherein the alarm module is electrically connected to the control module, characterized in that, It also includes the automatic dispensing device according to any one of claims 1 to 7, wherein the safety switch (2) is electrically connected to the control module, and when the safety switch (2) is closed, the control module controls the alarm module to issue an alarm signal; Preferably, it also includes a display screen, the safety switch (2) is electrically connected to the display screen, and the display screen is capable of displaying the status of the safety switch (2).

10. A household appliance according to claim 9, characterized in that, Also includes: The power supply module is electrically connected to the control module; An overflow switch (4) is connected to the top of the liquid storage box (1), has a sensing range and the sensing range is located above the set height of the liquid level in the additive chamber (101); When the liquid level in the additive chamber (101) exceeds the set liquid level height, the overflow switch (4) can sense the control mechanism (3) and close it. The overflow switch (4) is electrically connected to the control module. When the overflow switch (4) is closed, the control module controls the power supply module to cut off the power. Preferably, when the overflow switch (4) is closed, the control module controls the alarm module to issue an alarm signal.

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