A dispensing device with pressure relief function and a washing machine

Abstract

The application provides a water injection device with pressure relief function, which comprises a water injection channel, a pressure relief port arranged on the water injection channel, a pressure relief valve installed at the pressure relief port, a valve core of the pressure relief valve corresponding to the pressure relief port, and a detection unit arranged on the water injection device to detect the relative position of the valve core. The pressure relief valve is arranged on the water injection channel to adjust the opening of the pressure relief port according to the change of the water pressure in the water injection channel, thereby achieving the technical progress of adjusting the air pressure in the water injection channel and stabilizing the water injection. In addition, the detection unit is arranged to accurately detect the air pressure in the water injection channel, thereby achieving the effect of timely feeding the user with the alarm and reminder of the excessive air pressure in the water injection channel. The application further discloses a washing machine provided with the water injection device with pressure relief function.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of laundry treating equipment, and particularly relates to an additive feeding device with a pressure relief function for a washing machine, and a washing machine provided with the additive feeding device. BACKGROUND

[0002] With the improvement of consumers' quality of life, washing machines have become indispensable in people's life. The existing washing machine is generally provided with an outer drum for containing washing water, and a rotatable inner drum is arranged in the outer drum. A dewatering hole is formed in the inner drum to communicate the inner drum with the outer drum, so that the washing water flowing into the outer drum can flow in and out of the inner drum through the dewatering hole, so as to realize the effect that the washing water contacts with the load to be treated in the inner drum and the load is treated by the washing water.

[0003] The additive feeding mode of the above-mentioned existing washing machine is as follows: the additive feeding device feeds the additives into the pipeline communicated with the outer drum of the washing machine, and then the fed additives flow into the outer drum of the washing machine along the pipeline; then, when the washing machine executes the washing program, the fed additives are mixed with the washing water flowing into the outer drum, and part of the washing water mixed with the additives flows into the inner drum through the dewatering hole and contacts with the load to be treated in the inner drum, so as to realize the effect that the load is washed and treated by the additives.

[0004] The above-mentioned existing feeding device is generally provided with a feeding waterway on the shell, and the feeding waterway is used for the water flowing into the washing machine after the water flows into the washing machine; and the feeding device extracts the additives into the feeding waterway, so that the extracted additives flow into the washing machine together with the water flowing into the washing machine.

[0005] However, the water pressure of the water supply source of the existing washing machine may not be stable, and there may be problems such as too large water pressure or unstable water pressure, which may cause the water flowing into the feeding waterway to be too rapid or have large fluctuations, and then cause the pressure in the feeding waterway to be too large, the flow rate of the water flowing out of the feeding device to fluctuate, and even cause the feeding waterway to be broken due to the excessive internal pressure.

[0006] Therefore, the present application is proposed. SUMMARY

[0007] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art, and to provide a feeding device with a pressure relief function, so as to realize the purpose of automatically relieving the pressure in the waterway of the feeding device, and to prevent the occurrence of problems such as waterway rupture caused by excessive water pressure in the waterway.

[0008] To solve the above-mentioned technical problems, the basic idea of the technical solution of the present application is:

[0009] A dispensing device with pressure relief function includes: a dispensing water path, a pressure relief port on the dispensing water path, a pressure relief valve installed at the pressure relief port, the valve core of the pressure relief valve correspondingly blocking the pressure relief port and moving to open the pressure relief port after the pressure in the dispensing water path exceeds a set value, and the dispensing device is provided with a detection unit for detecting the relative position of the valve core.

[0010] Furthermore, the detection unit includes a reed switch disposed on the housing of the dispensing device and a magnet that moves together with the valve core. The reed switch detects the relative position of the magnet to determine whether the valve core has opened the pressure relief port.

[0011] Furthermore, the pressure relief valve includes a valve core corresponding to the sealing of the pressure relief port, an elastic element that applies a driving force to the valve core to move in the direction of sealing the pressure relief port, and the valve core is equipped with an independently set magnet, or the valve core is directly composed of a magnet.

[0012] Furthermore, a pressure relief port is provided on the bottom wall of the water supply channel, and a downward protruding connector is provided at the lower part of the water supply channel, which is coaxial with the pressure relief port. The connector forms an installation cavity, and the pressure relief valve is installed in the installation cavity.

[0013] Preferably, the valve core is installed in the mounting cavity in a way that allows it to move up and down. The top of the valve core is a sealing surface that corresponds to the sealing of the pressure relief port. The sealing surface is in contact with the bottom wall of the water inlet channel around the pressure relief port, thereby sealing and closing the pressure relief port accordingly.

[0014] More preferably, at least the sealing surface of the valve core is made of a deformable elastic material.

[0015] Furthermore, the bottom of the connector is provided with an opening that connects the mounting cavity to the lower part, and a spring is held between the bottom wall of the mounting cavity and the valve core, with the spring and the pressure relief port being coaxially arranged.

[0016] Preferably, the diameter of the opening is smaller than the inner circumferential diameter of the mounting cavity, and a radially protruding mounting rib is provided on the outer circumferential wall of the middle part of the valve core. The two ends of the spring are respectively connected to the bottom wall of the mounting cavity on the outer circumference of the opening and the lower surface of the mounting rib.

[0017] Furthermore, the valve core is cylindrical, and a hollow cavity is provided inside the cylindrical valve core, and a magnet is installed inside the hollow cavity;

[0018] Preferably, the columnar valve core and the pressure relief port are coaxially arranged. The columnar valve core has a hollow cavity in the middle. The outer periphery of the hollow cavity has a radially protruding mounting rib. The lower part of the hollow cavity has a ring of annular guide ribs protruding downward along the axial direction of the columnar valve core. The outer peripheral wall of the ring of guide ribs contacts the inner peripheral wall of the spring, and the upper end of the spring is inserted into the lower end of the ring of guide ribs.

[0019] Furthermore, the detection unit is located above the pressure relief port and on the upper side of the top wall of the water delivery channel;

[0020] Preferably, the bottom wall of the water inlet channel is provided with an upward protrusion, and the pressure relief port is located on the protrusion.

[0021] Furthermore, the dispensing device includes a water box with a top cover, the dispensing water path is integrated inside the top cover, the detection unit is located above the top cover, and the pressure relief port and pressure relief valve are both located below the top cover.

[0022] Preferably, the pressure relief port is directly connected to the water supply channel and the inside of the water box;

[0023] Preferably, the water tank is equipped with a retractable liquid storage box, which has a through opening at the top and bottom. The pressure relief port is located above the opening when the liquid storage box is closed, so that the liquid flowing out of the pressure relief port can flow directly through the opening to the bottom of the water tank below the liquid storage box.

[0024] Furthermore, the outlet of the water supply path is connected to the nozzle via a pipeline, and the pressure relief port is located in the water supply path near the outlet.

[0025] Preferably, the water spray path has a narrowed section with a reduced cross-section near the outlet, and the pressure relief port is located at the wide end of the narrowed section.

[0026] The present invention also discloses a washing machine equipped with the aforementioned dispensing device with pressure relief function.

[0027] Compared with the prior art, the present invention, by employing the above-described technical means, has the following significant technical advancements:

[0028] By installing a pressure relief port in the water supply line, the internal pressure of the water supply line can be regulated. Simultaneously, by installing a pressure relief valve at the pressure relief port, the opening of the pressure relief port can be adjusted accordingly to changes in the water pressure within the water supply line. This represents a significant technological advancement in regulating the air pressure within the water supply line and stabilizing water injection. Furthermore, by incorporating a detection unit, the air pressure status within the water supply line can be accurately detected, enabling timely alarm reminders to users when the air pressure within the water supply line is too high.

[0029] The present invention also discloses a washing machine, wherein the washing machine is equipped with any of the above-described dispensing devices with pressure relief function.

[0030] Meanwhile, the present invention has a simple structure and significant effects, and is intended for widespread use.

[0031] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0032] 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:

[0033] Figure 1 This is a schematic diagram of the washing machine installation structure under the exploded state of the dispensing device in an embodiment of the present invention;

[0034] Figure 2 This is a side view of the upper cover of the dispensing device in an embodiment of the present invention;

[0035] Figure 3 This is an embodiment of the present invention. Figure 2 Schematic diagram of the BB section;

[0036] Figure 4 This is an embodiment of the present invention. Figure 3 A schematic diagram of the CC section;

[0037] Figure 5 This is an embodiment of the present invention. Figure 4 An enlarged structural diagram of point A.

[0038] Key components in the diagram: 100, Dispensing device; 200, Outer cylinder; 300, Inner cylinder; 400, Window gasket; 500, Nozzle structure; 600, Conduit; 1, Dispensing water path; 2, Water box; 3, Top cover; 31, First part; 32, Second part; 4, Liquid storage chamber; 5, Liquid storage box; 6, Pump; 7, Communicating vessel; 8, Liquid suction channel; 11, Outlet; 12, Inlet; 13, Suction port; 14, Narrowing section; 20, Pressure relief port; 21, Pressure relief valve; 22, Valve core; 23, Spring; 24, Connector; 25, Mounting cavity; 26, Opening; 27, Magnet; 28, Reed switch; 29, Hollow cavity; 210, Mounting rib; 211, Guide rib; 212, Sealing surface.

[0039] 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

[0040] 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.

[0041] 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.

[0042] 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.

[0043] This invention provides an additive dispensing device for a washing machine, comprising: a dispensing water channel 1; and a dispensing unit for dispensing additives into the dispensing water channel 1. The outlet of the dispensing water channel 1 is connected to the interior of the outer drum of the washing machine via a dispensing structure, thereby supplying water to the interior of the outer drum and dispensing the additives along with the water supply. In this invention, the dispensing structure can be any existing structure, for example, the outlet of the dispensing water channel is connected to a nozzle structure via a pipe, and the nozzle structure sprays the additive solution supplied by the dispensing water channel into the inner drum 300 of the washing machine.

[0044] In this embodiment of the invention, the water dispensing channel 1 is integrated into the water tank 2 of the additive dispensing device 100. The outlet 11 of the water dispensing channel 1 is located on the outside of the water tank 2, and the nozzle structure is located outside the water tank 2. The outlet 11 of the water dispensing channel 1 is connected to the nozzle structure via a conduit 600. By integrating the water dispensing channel 1 into the water tank 2 of the additive dispensing device 100, and directly connecting the outlet 11 of the water dispensing channel 1 to the nozzle structure, the additive extracted through the water dispensing channel 1 and the incoming water are sprayed out together, thereby achieving the purpose of the additive dispensing device 100 spraying and dispensing directly outward from the nozzle structure without going through the water tank part of the dispensing device 100.

[0045] like Figures 1 to 5As shown in the embodiment of the invention, the top of the water tank 2 of the additive dispensing device 100 is a cover 3. The dispensing water channel 1 is located inside the cover 3, and the outlet 11 of the dispensing water channel 1 is exposed on the outer periphery of the cover 3. The inlet end of the conduit 600 is connected to the outlet 11 of the dispensing water channel 1, and the outlet end of the conduit 600 is connected to the nozzle structure 500 located outside the water tank 2. Preferably, the cover 3 includes a first part 31 and a second part 32 that interlock with each other. The first part 31 and the second part 32 are spliced ​​together to form the dispensing water channel 1 at the interface. More preferably, the first part 31 and the second part 32 of the cover 3 are connected by a welding process to form a closed, pressurized water channel structure inside.

[0046] Thus, the water inlet of the additive dispensing device 100 is integrated into the upper cover 3, so that the water inlet of the dispensing device 100 and the additive are directly dispensed through the water inlet of the upper cover 3, thereby achieving the effect of the additive flowing out directly from the outlet 11 on the outer periphery of the upper cover 3.

[0047] like Figures 2 to 5 As shown in the figure, an embodiment of the present invention introduces a dispensing device, including a dispensing water channel 1, a pressure relief port 20 provided on the dispensing water channel 1, a pressure relief valve 21 installed at the pressure relief port 20, the valve core 22 of the pressure relief valve 21 correspondingly blocks the pressure relief port 20, and moves to open the pressure relief port 20 after the pressure in the dispensing water channel 1 exceeds a set value, and the dispensing device is provided with a detection unit for detecting the relative position of the valve core 22.

[0048] By setting a pressure relief port 20 on the water supply channel 1, the internal pressure of the water supply channel 1 can be regulated. At the same time, by setting a pressure relief valve 21 at the pressure relief port 20, the opening of the pressure relief port 20 can be adjusted accordingly with the change of water pressure in the water supply channel 1. This achieves a significant technological advancement in regulating the air pressure in the water supply channel 1 and stabilizing water injection. Furthermore, by setting a detection unit, the air pressure status in the water supply channel can be accurately detected, thereby enabling timely feedback and alarm reminders to users when the air pressure in the water supply channel is too high.

[0049] like Figures 2 to 5 As shown in the embodiment of the present invention, the detection unit includes a reed switch 28 disposed on the water box 2 of the dispensing device 100 and a magnet 27 that moves together with the valve core 22. The reed switch 28 detects the relative position of the magnet 27 to determine whether the valve core 22 has opened the pressure relief port 20. Of course, in this embodiment of the present invention, the detection unit can also use other existing detection devices that can detect the opening and closing state of the pressure relief valve 21.

[0050] With the above settings, the reed switch 28 can accurately detect the position of the magnet 27 that moves with the valve core 22 of the pressure relief valve 21, so as to achieve the effect of automatically adjusting the pressure in the water supply channel 1 and accurately detecting the opening and closing status of the pressure relief valve 21.

[0051] like Figures 2 to 5 As shown, in this embodiment of the invention, the pressure relief valve 21 includes a valve core 22 corresponding to the sealing of the pressure relief port 20, and an elastic element that applies a driving force to the valve core 22 in the direction of sealing the pressure relief port 20. The elastic element can be any existing component that can apply an elastic upward pushing force to the valve core 22, such as a spring, a pressure rod, etc.

[0052] In this embodiment of the invention, the magnet 27 provided on the pressure relief valve 21 can be: such as Figure 5 As shown, the independent component mounted on the valve core 22 is composed of a magnet mounted on the outside or inside of the valve core 22; or it can be an integral component directly formed by the valve core 22, so that part or all of the valve core 22 is made of magnetic material (not shown in the attached figure).

[0053] like Figures 2 to 5 As shown in the embodiment of the present invention, a pressure relief port 20 is provided on the bottom wall of the water delivery channel 1, and a connector 24 protruding downward and coaxially arranged with the pressure relief port is provided at the lower part of the water delivery channel 1. The connector 24 forms an installation cavity 25 inside, and the pressure relief valve 21 is installed in the installation cavity 25 so that the water flowing through the water delivery channel 1 can be discharged to the outside from the pressure relief port 20 through the connector 24, thereby achieving the effect of the water flowing through the water delivery channel 1 being discharged to the outside through the pressure relief port 20.

[0054] like Figures 2 to 5 As shown, in this embodiment of the invention, the pressure relief valve 21 includes a valve core 22, which is installed in the mounting cavity 25 and can move up and down. The top of the valve core 22 is a sealing surface 212 corresponding to the sealing of the pressure relief port. The sealing surface 212 is in contact with the bottom wall of the water discharge channel 1 around the pressure relief port 20, thereby sealing and closing the pressure relief port 20.

[0055] In this embodiment of the invention, at least the sealing surface 212 of the valve core 22 is made of a deformable elastic rubber material, so that when the valve core 22 is closed, it blocks the pressure relief port 20, thereby achieving the effect of effectively blocking the pressure relief port 20.

[0056] like Figures 2 to 5As shown in the embodiment of the present invention, the bottom of the connector 24 is provided with an opening 26 that connects the mounting cavity 25 to the lower part. A spring 23 is held between the bottom wall of the mounting cavity 25 and the valve core 22. The spring 23 is coaxially arranged with the pressure relief port 20. The opening 26 connects the mounting cavity to the outside of the water delivery channel 1, so as to realize the purpose of establishing a communication channel between the water delivery channel 1 and the outside atmosphere through the mounting cavity 25. At the same time, the pressure relief valve 21 provided in the mounting cavity 25 can achieve the effect of controllable on / off control of the communication channel.

[0057] Preferably, in this embodiment of the invention, the aperture of the opening 26 is smaller than the inner circumferential diameter of the mounting cavity 25, and a radially protruding mounting rib 210 is provided on the outer circumferential wall of the middle part of the valve core 22. The aperture of the opening 26 is smaller than the outer circumferential diameter of the mounting rib 210, and the outer circumferential diameter of the mounting rib 210 is larger than the radial dimension of the spring, so that the two ends of the spring 23 are respectively connected to the bottom wall of the mounting cavity 25 on the outer circumference of the opening 26 and the lower surface of the mounting rib 210.

[0058] like Figures 2 to 5 As shown in the embodiment of the present invention, the valve core 22 is columnar, and the interior of the columnar valve core 22 is provided with a hollow chamber 29. A magnet 27 is installed in the hollow chamber 29 to ensure that the magnet 27 is isolated from the liquid flowing through the external water path, and to minimize the distance between the magnet 27 and the reed switch 28 to improve the detection accuracy.

[0059] Preferably, in this embodiment of the invention, the columnar valve core 22 and the pressure relief port 20 are coaxially arranged. The columnar valve core 22 has a hollow cavity 29 in the middle. The outer periphery of the hollow cavity 29 is provided with a radially protruding mounting rib 210. The lower part of the hollow cavity 29 is provided with a ring-shaped guide rib 211 that protrudes downward along the axial direction of the columnar valve core 22. The outer peripheral wall of the ring-shaped guide rib 211 contacts the inner peripheral wall of the spring 23, and the upper end of the spring 23 is inserted into the lower end of the ring-shaped guide rib 211.

[0060] like Figures 2 to 5 As shown in the embodiment of the present invention, the detection unit is a reed switch 28 located above the pressure relief port 20 and on the top wall of the water delivery channel 1, so that the reed switch 28 and the magnet 27 are arranged vertically to minimize the distance between them and improve the detection accuracy.

[0061] Preferably, in this embodiment of the invention, the bottom wall of the water delivery channel 1 is provided with an upwardly protruding part, and the pressure relief port 20 is provided on the protruding part, so that the pressure relief port 20 is set higher than the bottom wall of the water delivery channel 1, so as to achieve the purpose of pressure relief and regulation inside the water delivery channel 1 while minimizing the water flow rate from the pressure relief port 20 (not shown in the figure).

[0062] like Figures 1 to 5As shown, in this embodiment of the invention, the dispensing device 100 includes a water tank 2 forming the outer shell. The water tank 2 has a top cover 3, and the dispensing water channel 1 is integrated inside the top cover 3. The detection unit is located above the top cover 3, and the pressure relief port 20 and the pressure relief valve 21 are both located below the top cover 3. In this embodiment of the invention, the pressure relief port 20 directly connects the dispensing water channel 1 to the inside of the water tank 2. Preferably, in this embodiment of the invention, a pull-out liquid storage box 5 is installed inside the water tank 2. The liquid storage box 5 has a through-hole on its upper and lower parts. The pressure relief port 20 is located above the through-hole when the liquid storage box 5 is closed, so that the liquid flowing out of the pressure relief port 20 flows directly through the through-hole to the bottom of the water tank 2 below the liquid storage box 5.

[0063] like Figure 2 As shown in the embodiment of the invention, the pressure relief port 20 is located at the water delivery channel 1 near the outlet; preferably, the water delivery channel 1 has a narrowed section 14 with a reduced cross-section near the outlet, and the pressure relief port 20 is located at the wide end of the narrowed section 14. Through the above arrangement, the pressure relief port 20 can detect the pressure at the outlet and the narrowed flow channel section within the water delivery channel 1 and perform pressure relief and air release treatment, thereby achieving pressure relief and adjustment at locations with lower pressure within the water delivery channel 1, and thus improving the accuracy of pressure regulation in the water delivery channel 1 of the delivery device 100.

[0064] In this embodiment of the invention, the dispensing device 100 includes a storage chamber 4 for storing additives, and the storage chamber 4 is connected to the dispensing water channel 1; the dispensing device 100 is also provided with a power unit to provide power for pumping the additives in the storage chamber 4 into the dispensing water channel.

[0065] like Figures 1 to 5 As shown, in this embodiment, the power unit is a pump 6 located on the liquid extraction channel 8 connected to the liquid storage chamber 4 and the water delivery channel 1, providing driving force for the liquid in the liquid extraction channel 8 to flow from the liquid storage chamber 4 to the water delivery channel 1. In this embodiment, the liquid extraction channel 8 is also integrated inside the upper cover 3. The inlet of the liquid extraction channel 8 is connected to the liquid storage chamber 4 via a connector 7, the outlet of the liquid extraction channel 8 is connected to the inlet of the pump 6, and the outlet of the pump 6 is connected to the suction port 13 provided on the water delivery channel 1. By controlling the start and stop of the pump 6, the additive in the liquid storage chamber 4 is pumped to the water delivery channel 1 for delivery.

[0066] In this embodiment of the invention, the power unit can also be configured with other existing structures, such as: the power unit is a suction pump, the suction port of the suction pump is connected to the delivery water channel 1, so that a negative pressure is formed in the delivery water channel 1, and the additive in the storage chamber 4 is drawn into the delivery water channel 1 through the suction channel 8.

[0067] And / or, the power unit may also be a venturi tube installed on the water delivery channel 1. The venturi tube has a negative pressure area with a sudden change in diameter. The negative pressure area can be formed by the flowing water. The negative pressure area of ​​the venturi tube is provided with a suction port, which is connected to the liquid storage chamber 4 through the liquid extraction channel 8 (not shown in the figure).

[0068] In this embodiment, the additive dispensing device 100 includes multiple liquid storage chambers 4, each of which can hold different types of additives, such as detergents, fabric softeners, fragrances, disinfectants, etc. The dispensing device 100 is equipped with a control device, which is used to control one or a combination of liquid storage chambers 4 to be connected to the dispensing water channel 1, so as to dispense any or multiple combinations of additives into the dispensing water channel 1.

[0069] In this embodiment of the invention, the control device can be configured as any existing structure capable of achieving the above-mentioned functions; for example:

[0070] In this embodiment of the invention, each liquid storage chamber 4 can be connected to the water delivery channel 1 via a flow channel equipped with a control valve, so as to achieve the effect of separate or combined on / off control of each flow channel by controlling the opening and closing of each control valve, thereby achieving the purpose of independently delivering any type of additive or simultaneously delivering multiple types of additives.

[0071] Each liquid storage chamber 4 can also be connected to a different inlet of the same reversing valve in a one-to-one correspondence. The outlet of the reversing valve is connected to the water supply channel 1. The reversing valve is equipped with a rotatable valve core, which is used to control the connection between any or a combination of inlets and outlets. This can also achieve the purpose of independently adding any type of additive or adding multiple types of additives at the same time (not shown in the attached figure).

[0072] like Figures 1 to 5 As shown, in this embodiment, the water box 2 of the dispensing device 100 is provided with a liquid storage box 5. The liquid storage box 5 is installed in the water box 2 of the additive dispensing device 100 that can be pulled outward. The liquid storage box 5 is provided with at least one liquid storage chamber 4 for storing additives. Each liquid storage chamber 4 on the liquid storage box 5 is connected to the dispensing water channel 1 through a connector 7. The connector 7 is provided with a control device for controlling the selective or combined connection of each liquid storage chamber 4 to the dispensing water channel 1.

[0073] In this embodiment, the inlet 12 of the water dispensing channel 1 is located on the outer wall of the water box 2, and the inlet 12 of the water dispensing channel 1 is connected to the washing machine water inlet pipe so that the washing water can flow into the water dispensing channel 1 through the inlet 12. The water box 2 of the additive dispensing device 100 is provided with a water inlet connector, and the two ends of the water inlet connector are respectively connected to the inlet 12 of the water dispensing channel 1 and the washing machine water inlet pipe; more preferably, a control valve for controlling the on / off of the water channel is installed at the water inlet connector.

[0074] like Figures 2 to 5 As shown, in this embodiment, a suction port 13 is provided in the middle of the water delivery channel 1. The suction port 13 is connected to the delivery unit, so that the additive is drawn into the water delivery channel 1 from the suction port 13. Preferably, the suction port 13 is connected to the outlet of the pump 6, the inlet of the pump 6 is connected to the outlet of the extraction channel 8, the inlet of the extraction channel 8 is connected to the outlet of the communicating vessel 7, and the multiple inlets of the communicating vessel 7 are connected one-to-one with each of the liquid storage chambers 4, so as to realize that the additive in the liquid storage chamber 4 is drawn into the water delivery channel 1 through the above-mentioned channels under the driving action of the pump 6.

[0075] like Figure 1 As shown, in this embodiment, the downstream portion of the water delivery path 1 of the suction port 13 can mix the additive flowing into the water delivery path 1 with the incoming water to form an additive solution. Preferably, the suction port 13 is located close to the inlet 12 of the water delivery path 1 to maximize the length of the water delivery path 1 downstream of the suction port 13, thereby increasing the space in the downstream portion of the water delivery path 1 where the additive and water are mixed, and thus improving the mixing uniformity between the additive and the incoming water.

[0076] like Figure 1 As shown, this embodiment of the invention also provides a washing machine equipped with the aforementioned pressure-relieving dispensing device, which includes: an outer drum 200, and an inner drum 300 with an opening on the same side as the outer drum 200. The outlet 11 of the dispensing water passage 1 of the dispensing device 100 is connected to a dispensing structure on the outer drum 200 via a pipe, so as to achieve the purpose of allowing the additive to flow into the outer drum 200 of the washing machine along with the incoming water. In this embodiment of the invention, preferably, the dispensing structure is a nozzle structure 500 installed on the washing machine; a window gasket 400 extending outward is connected to the opening of the outer drum 200, and the nozzle structure 500 is installed at the window gasket 400. Of course, in this embodiment of the invention, the dispensing structure can also adopt any other existing structure that can dispense the additive mixture into the outer drum 200.

[0077] Furthermore, in this embodiment of the invention, a control method for the aforementioned washing machine is also provided, comprising the following:

[0078] The position of the valve core of the pressure relief valve at the pressure relief port of the dispensing device is checked.

[0079] The washing machine operates normally when the valve core is in the closed position.

[0080] When the valve core is in the open position, the water discharge circuit of the washing machine's dispensing device begins to depressurize.

[0081] In this embodiment of the invention, when the water discharge path of the washing machine's dispensing device begins to depressurize, the washing machine performs the following operations:

[0082] Stop supplying water to the water supply system and / or stop adding additives to the water supply system.

[0083] Preferably, in this embodiment of the invention, when the water discharge path of the washing machine's dispensing device begins to depressurize, the washing machine issues an alarm notification, indicating that the pressure in the water discharge path of the dispensing device is too high and depressurization is underway. The alarm notification may include any or a combination of voice, image, remote push notification, etc., sent to the user.

[0084] In this embodiment of the invention, the valve core is determined to be in the open position when any of the following conditions are met; the specific conditions are as follows.

[0085] Condition 1: If the reed switch detects that the distance between the magnet on the valve core and the reed switch exceeds the maximum set distance, then the valve core is determined to be in the open position.

[0086] Condition 2: If the reed switch detects that the distance between the magnet on the valve core and the reed switch exceeds the set value for a duration exceeding the set time t, then the valve core is determined to be in the open position.

[0087] 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 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. A dispensing device with pressure relief function, characterized in that: include: Deployment of waterways; The dispensing unit is used to dispense additives into the water system. The water dispensing channel is integrated inside the top cover of the water tank of the additive dispensing device. The outlet of the water dispensing channel is exposed on the outer periphery of the top cover. The nozzle structure is located outside the water tank. The outlet of the water dispensing channel is connected to the nozzle structure through an independent conduit so that the additive and water drawn out through the water dispensing channel are sprayed out together. The additive dispensing device sprays the additive directly outward from the nozzle structure without going through the water tank part of the dispensing device. The water supply path is equipped with a pressure relief port, and a pressure relief valve is installed at the pressure relief port. The valve core of the pressure relief valve is corresponding to block the pressure relief port and moves to open the pressure relief port after the pressure in the water supply path exceeds the set value. The supply device is equipped with a detection unit to detect the relative position of the valve core. The detection unit is located above the pressure relief port and on the top wall of the water delivery channel. The pressure relief port directly connects the water supply path to the inside of the water box of the supply device.

2. The dispensing device with pressure relief function according to claim 1, characterized in that, The detection unit includes a reed switch located on the housing of the dispensing device and a magnet that moves together with the valve core. The reed switch detects the relative position of the magnet to determine whether the valve core has opened the pressure relief port.

3. The dispensing device with pressure relief function according to claim 2, characterized in that, The pressure relief valve includes a valve core corresponding to the sealing of the pressure relief port, an elastic element that applies a driving force to the valve core to move in the direction of sealing the pressure relief port, and an independently set magnet is installed on the valve core, or the valve core is directly composed of a magnet.

4. A dispensing device with pressure relief function according to any one of claims 1 to 3, characterized in that, The bottom wall of the water inlet channel is provided with a pressure relief port, and the lower part of the water inlet channel is provided with a downward protruding connector that is coaxial with the pressure relief port. The inside of the connector forms an installation cavity, and the pressure relief valve is installed in the installation cavity.

5. A dispensing device with pressure relief function according to claim 4, characterized in that, The valve core is installed in the mounting cavity and can move up and down. The top of the valve core is the sealing surface corresponding to the pressure relief port. The sealing surface is in contact with the bottom wall of the water supply channel around the pressure relief port, thus sealing and closing the pressure relief port accordingly.

6. A dispensing device with pressure relief function according to claim 5, characterized in that, At least the sealing surface of the valve core is made of a deformable elastic material.

7. A dispensing device with pressure relief function according to claim 4, characterized in that, The bottom of the connector has an opening that connects the mounting cavity to the lower part. A spring is held between the bottom wall of the mounting cavity and the valve core. The spring is coaxially arranged with the pressure relief port.

8. A dispensing device with pressure relief function according to claim 7, characterized in that, The opening diameter is smaller than the inner circumferential diameter of the mounting cavity. A radially protruding mounting rib is provided on the outer circumferential wall of the middle part of the valve core. The two ends of the spring are respectively connected to the bottom wall of the mounting cavity on the outer circumference of the opening and the lower surface of the mounting rib.

9. A dispensing device with pressure relief function according to claim 4, characterized in that, The valve core is cylindrical, and a hollow chamber is provided inside the cylindrical valve core, in which a magnet is installed.

10. A dispensing device with pressure relief function according to claim 9, characterized in that, The columnar valve core is coaxially arranged with the pressure relief port. The columnar valve core has a hollow chamber in the middle. The outer periphery of the hollow chamber has a radially protruding mounting rib. The lower part of the hollow chamber has a ring-shaped guide rib protruding downward along the axial direction of the columnar valve core. The outer peripheral wall of the ring-shaped guide rib contacts the inner peripheral wall of the spring, and the upper end of the spring is inserted into the lower end of the ring-shaped guide rib.

11. A dispensing device with pressure relief function according to any one of claims 1 to 3, characterized in that, The bottom wall of the water inlet channel has an upward protrusion, and the pressure relief port is located on the protrusion.

12. A dispensing device with pressure relief function according to any one of claims 1 to 3, characterized in that, The dispensing device includes a water box with a top cover. The water dispensing circuit is integrated inside the top cover. The detection unit is located above the top cover, and the pressure relief port and pressure relief valve are located below the top cover.

13. A dispensing device with pressure relief function according to claim 12, characterized in that, The water tank contains a retractable liquid storage box with a through opening. The pressure relief port is located above the opening when the liquid storage box is closed, allowing the liquid flowing out of the pressure relief port to flow directly through the opening to the bottom of the water tank below the liquid storage box.

14. A dispensing device with pressure relief function according to any one of claims 1 to 3, characterized in that, The water outlet of the water supply path is connected to the nozzle via a pipeline, and the pressure relief port is located in the water supply path near the water outlet.

15. A dispensing device with pressure relief function according to claim 14, characterized in that, The water spray path has a narrow section with a reduced cross-section near the outlet, and the pressure relief port is located at the wide end of the narrow section.

16. A washing machine, characterized in that: The device is equipped with a pressure relief function as described in any one of claims 1 to 15.

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