Anti-siphon overflow structure of detergent box and washing machine

Abstract

The invention discloses an anti-siphon overflow structure of a detergent box and a washing machine, the anti-siphon overflow structure comprises the detergent box, the detergent box is internally provided with a water inlet channel and an overflow channel which are respectively independent, and the overflow channel is provided with a notch which is communicated with the external atmosphere; one end of the overflow pipe is communicated with the overflow channel and located below the notch, and the other end of the overflow pipe is used for being communicated with an outer cylinder. According to the washing machine, on one hand, the effect of overflowing of the detergent box is achieved, excessive water flows into the outer barrel through the overflowing channel and the overflowing pipe to participate in washing, the overflowing pipe is communicated with the external atmosphere through the notch, and it can be guaranteed that the overflowing pipe smoothly drains water into the outer barrel; on the other hand, the water inlet channel is communicated with the external atmosphere through the overflow channel, air pressure balance of the water inlet channel in the detergent box can be kept, the phenomenon that water in the outer barrel is sucked back due to negative pressure is prevented, and normal water inlet and detergent feeding of the washing machine are guaranteed.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of washing equipment, in particular, relates to a siphon-proof overflow structure of a detergent box and a washing machine. BACKGROUND

[0002] With the increasing improvement of people's living standards, washing equipment has gradually become one of the household appliances in people's homes, especially washing machines. When the ordinary washing machine is filled with water for washing, the water inlet valve is first opened, part of the water flow flows through the detergent box to mix the detergent, and then the water is filled into the washing drum. After the water is filled, the washing drum rotates for washing or rinsing.

[0003] However, when the washing machine is connected to the water pipe, the electromagnetic valve for controlling the water inlet fails, or the water supply is suddenly stopped during the water inlet process of the washing machine, negative pressure is generated near the electromagnetic valve or the water inlet pipe, which can siphon the water in the washing drum into the detergent box, so that the dirt in the washing drum enters the water inlet pipeline after entering the detergent box, affecting the washing process.

[0004] In addition, after the water enters the detergent box, it flows into the outer drum through the connecting part. Since the outer drum is a closed space, air can only be discharged from the connecting part to the outside of the outer drum, and the connecting part is relatively narrow. Under normal circumstances, water can enter the connecting part, air can come out of the connecting part, and water vapor can achieve normal exchange. However, when foam or foreign matter makes the connecting part even narrower, the speed of air in the outer drum discharging from the connecting part will slow down, or even cannot be discharged. That is, the water in the detergent box cannot enter the outer drum quickly, and the water in the detergent box cannot be discharged to the outer drum, which can easily cause the water level in the detergent box to be too high, resulting in overflow of the detergent box.

[0005] Therefore, the present application is proposed. SUMMARY

[0006] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art, and the purpose is to provide a siphon-proof overflow structure of a detergent box, which can not only realize the overflow function of the detergent box and overflow the excessive water in the detergent box to the outer drum for washing, but also prevent the phenomenon of negative pressure in the detergent box sucking water in the outer drum.

[0007] Another purpose of the present application is to provide a washing machine.

[0008] To solve the above technical problems, the basic idea of the technical scheme of the present application is to provide a siphon-proof overflow structure of a detergent box, which comprises:

[0009] The detergent box is provided with independent water inlet channels and overflow channels respectively; one end of the overflow channel is communicated with the water inlet channel; the overflow channel is provided with a notch communicated with the outside air;

[0010] An overflow pipe, one end of which is in communication with the overflow channel and is located below the notch, and the other end of which is used to communicate with the outer cylinder.

[0011] Further, the overflow channel is provided with an overflow hole in communication with one end of the overflow pipe, and the notch is higher than the overflow hole; preferably, the notch is provided through the outer wall of the detergent box.

[0012] Further, one end of the overflow pipe is in communication with the other end of the overflow channel, and the other end of the overflow pipe is used to communicate with the drain port at the bottom of the outer cylinder.

[0013] Further, the outer cylinder is provided with a drain connection pipe, one end of which is in communication with the outer cylinder, and the other end of which is in communication with a drain pump or a drain valve; the other end of the overflow pipe is in communication with the drain connection pipe.

[0014] Further, the top of the peripheral wall of the outer cylinder is provided with a laundry dropping port; the detergent box is located above the outer cylinder outside the peripheral of the laundry dropping port; the overflow pipe extends outward beyond the peripheral wall of the outer cylinder from the overflow hole in a transverse direction, and then extends downward below the outer cylinder, and then extends to communicate with the drain connection pipe.

[0015] Further, the upper end of the overflow pipe is provided with a gas-permeable overflow port in communication with the external atmosphere; the gas-permeable overflow port is flush with the highest water level in the outer cylinder.

[0016] Further, the water inlet channel has a certain extension length, and the water inlet port and the water outlet port are respectively arranged at both ends of the extension length of the water inlet channel; the bottom wall of the end of the water inlet channel close to the water inlet port is provided with a water falling hole;

[0017] One end of the overflow channel is in communication with the water falling hole; the notch is provided through the outer wall of the detergent box, and the notch and the overflow hole are respectively arranged on the side wall of the other end of the overflow channel.

[0018] Further, the water inlet channel is arranged at the outer peripheral edge in the detergent box and extends in an arc shape in the circumferential direction from the water inlet end to the water outlet end;

[0019] The overflow channel is arranged at the outer peripheral edge in the detergent box; the other end of the overflow channel is arranged in the reverse direction of the extension direction of the water inlet channel and has a certain distance from the other end of the water inlet channel; the overflow hole and the notch are in communication on the other end of the overflow channel.

[0020] Further, the water falling hole extends a certain length in the water inlet flow direction; the water inlet channel includes:

[0021] The first channel section has a gradually decreasing inner diameter along the water inflow direction to the water inlet end of the water fall;

[0022] The second channel section has a gradually increasing inner diameter along the water inflow direction from the water outlet end of the water fall, and the bottom wall of the second channel section is gradually lowered.

[0023] Preferably, the overflow channel is provided with a plurality of convex ribs on the bottom wall opposite to the water fall, and the convex ribs are arranged close to the water outlet end of the water fall.

[0024] The present application also provides a washing machine with the anti-siphon overflow structure of the detergent box.

[0025] Compared with the prior art, the present application has the following advantages.

[0026] (1) The detergent box has independent and connected water inflow channel and overflow channel. After water inflow, the water flows into the water inflow channel, part of the water flows out from the water outlet of the water inflow channel, and part of the water flows into the overflow channel. When the water level in the overflow channel is too high, the water will flow out from the overflow channel and flow into the outer tub through the overflow pipe to participate in washing, thereby preventing the water level in the detergent box from being too high. Moreover, the overflow pipe is connected with the outside atmosphere through the gap, which can ensure smooth drainage of the overflow pipe into the outer tub.

[0027] In addition, the detergent box has a gap on the outer wall for connecting with the outside atmosphere, and the gap is connected with the overflow channel, so that the overflow channel is connected with the outside atmosphere. Moreover, one end of the overflow channel is connected with the water inflow channel, so that the water inflow channel can be connected with the outside atmosphere through the overflow channel, and the air pressure balance of the water inflow channel in the detergent box can be maintained. In this way, when negative pressure occurs near the electromagnetic valve or the water inflow pipe, the phenomenon of backflow of the detergent box into the outer tub can be avoided, and the normal water inflow and detergent dispensing of the washing machine can be ensured.

[0028] (2) When the water level in the detergent box is higher than the overflow hole, the excess water level will flow out through the overflow hole. The gap is designed to be higher than the overflow hole, so that the water flow cannot leak out from the gap, and the gap can be kept connected with the atmosphere, so that the water inflow channel can be connected with the outside atmosphere through the gap, the air pressure balance of the water inflow channel can be maintained, and the siphon phenomenon caused by negative pressure can be prevented.

[0029] (3) In the present application, the inner diameter of the first channel section gradually decreases along the water inflow direction, and the water flow pressure gradually increases, so that the water flow can pass through the water fall and enter the second channel section. The inner diameter of the second channel section gradually increases along the water inflow direction, and the bottom wall is gradually lowered, so that the water flow entering the second channel section can quickly flow to the water outlet end, the water flow in the first channel section can continue to enter the second channel section, and the water flow in the water inflow channel can be smooth.

[0030] The specific embodiments of the present application will be further described in conjunction with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0031] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the application and together with the description, serve to explain the application. Obviously, the drawings are only some embodiments of the application and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings. In the drawings:

[0032] Figure 1 is a schematic view of an anti-siphon overflow structure of a detergent box of the present application;

[0033] Figure 2 is a schematic view of a detergent box of the present application Figure 1 from another angle;

[0034] Figure 3 is a schematic view of a detergent box of the present application;

[0035] Figure 4 is a schematic view of a detergent box of the present application Figure 3 from another angle;

[0036] Figure 5 is a schematic view of a detergent box of the present application Figure 4 cross-sectional view in A-A direction of the present application;

[0037] Figure 6 is a schematic view of a detergent box of the present application Figure 4 cross-sectional view in B-B direction of the present application;

[0038] Figure 7 is a schematic view of a detergent box of the present application Figure 3 from another angle;

[0039] Figure 8 is a schematic view of a detergent box of the present application Figure 7 cross-sectional view in C-C direction of the present application.

[0040] In the drawings: 1, detergent box; 11, water inlet channel; 111, water inlet; 112, water outlet; 113, water outlet; 12, overflow channel; 121, notch; 122, overflow hole; 123, convex rib; 13, bottom shell; 14, upper shell; 15, cover plate; 2, outer cylinder; 21, clothes feeding port; 3, overflow pipe; 31, air-permeable overflow port; 41, drain connection pipe; 42, drain pump; 43, drain valve.

[0041] It should be noted that these drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0042] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments with reference to the drawings in the embodiments of the present application. The following embodiments are used to explain the present application, but are not used to limit the scope of the present application.

[0043] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as limiting the devices or elements referred to in a particular orientation, constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0044] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] As shown in Figures 1 to 8 The anti-siphon overflow structure of the detergent box can be applied to a drum washing machine or a pulsator washing machine.

[0046] The anti-siphon overflow structure comprises a detergent box 1 and an overflow pipe 3. The detergent box 1 is provided with a water inlet channel 11 and an overflow channel 12 which are independent respectively. One end of the overflow channel 12 is in communication with the water inlet channel 11. After water is introduced into the water inlet channel 11, part of the water flow is mixed with the detergent after the water inlet channel 11, and is discharged into the outer drum 2 of the washing machine; part of the water flow enters the overflow channel 12 and is discharged from the overflow channel 12.

[0047] The detergent box 1 is provided with a notch 121 which is in communication with the outside atmosphere, and the notch 121 is in communication with the overflow channel 12, so that the overflow channel 12 is in communication with the outside atmosphere.

[0048] The notch 121 can be arranged on the upper part or the bottom of the detergent box 1. Preferably, the notch 121 is arranged on the side wall of the detergent box 1.

[0049] One end of the overflow pipe 3 is in communication with the overflow channel 12, and the one end of the overflow pipe 3 is located below the notch 121. The other end of the overflow pipe 3 is used to communicate with the outer drum 2.

[0050] The detergent box 1 has an independent and communicating water inlet channel 11 and overflow channel 12. When the washing machine normally inlets water, the water flows into the water inlet channel 11, part of the water flows out from the water outlet 112 of the water inlet channel 11, and part of the water flows into the overflow channel 12. When the water level in the overflow channel 12 is too high, the water flows out from the overflow channel 12, preventing the water level in the detergent box 1 from being too high.

[0051] The detergent box 1 of the present application is provided with a notch 121 communicating with the external atmosphere, the notch 121 is connected with the overflow channel 12, so that the overflow channel 12 communicates with the external atmosphere. One end of the overflow channel 12 communicates with the water inlet channel 11, so that the water inlet channel 11 can communicate with the external atmosphere through the overflow channel 12, and the air pressure balance of the water inlet channel 11 in the detergent box 1 can be maintained. When the negative pressure is generated near the electromagnetic valve or the water inlet pipe, the phenomenon that the detergent box 1 sucks the water in the outer tub 2 is avoided, and the normal water inlet and detergent feeding of the washing machine are ensured.

[0052] In addition, when the detergent box 1 cannot drain water into the outer tub 2, the water level in the detergent box 1 is prone to be too high. The washing machine of the present application can make the water with too high water level in the detergent box 1 enter the overflow channel 12, and then flow into the outer tub 2 through the overflow pipe 3 to participate in washing. The notch 121 communicates with the external atmosphere, so that the overflow pipe 3 can communicate with the external atmosphere through the overflow channel 12 and the notch 121, thereby ensuring that the overflow pipe 3 can drain water into the outer tub 2 smoothly.

[0053] The detergent box 1 of the present application can realize both overflow function and anti-siphon function.

[0054] Specifically, when the water inlet valve of the washing machine is damaged, negative pressure is generated at the water inlet valve during the water inlet process, and the water inlet channel 11 in the detergent box 1 sucks the water in the outer tub 2. At this time, air can enter the overflow pipe and the water inlet channel 11 from the notch 121, so as to maintain the air pressure balance of the water inlet channel 11 and avoid the water sucked from the outer tub 2 entering the main water inlet pipe through the electromagnetic valve.

[0055] In the present application, the detergent is fed into the outer tub 2 by pumping the mixed water and detergent. The related structure of pumping and detergent storage is not shown in the figure.

[0056] The overflow channel 12 is provided with an overflow hole 122, and the notch 121 is higher than the overflow hole 122. One end of the overflow pipe 3 communicates with the overflow hole 122. Preferably, the overflow hole 122 and the notch 121 are provided through the outer wall of the detergent box 1.

[0057] When the water level in the detergent dispenser 1 is higher than the overflow hole 122, excess water will flow out through the overflow hole 122. The notch 121 is designed to be higher than the overflow hole 122 to ensure that water does not leak out from the notch 121, allowing the notch 121 to remain open to the atmosphere. This ensures that the water inlet channel 11 can be open to the outside atmosphere through the notch 121, maintaining the air pressure balance of the water inlet channel 11 and preventing the siphon phenomenon caused by negative pressure.

[0058] Water overflowing from the overflow hole 122 can be drained directly from the washing machine or drained into the outer drum 2 to participate in the washing process.

[0059] Preferably, the notch 121 is located at the upper part of the overflow channel 12 to ensure that the overflow channel 12 is always in communication with the outside atmosphere.

[0060] Furthermore, one end of the overflow pipe 3 is connected to the other end of the overflow channel 12. That is, one end of the overflow pipe 3 is located below the notch 121. The other end of the overflow pipe 3 is used to connect to the drain outlet at the bottom of the outer drum 2. Water overflowing from the detergent box 1 enters the bottom of the outer drum 2 through the overflow pipe 3 and the drain outlet, and flows in coordination with the water flow entering from the top of the outer drum 2, which is conducive to the thorough mixing of detergent and clothes.

[0061] When water enters the detergent dispenser 1, some water flows through the inlet channel 11 into the overflow channel 12. Once the water in the overflow channel 12 exceeds the preset height, it is discharged into the outer drum 2 through the overflow pipe 3, where it participates in the washing process along with the water discharged into the outer drum 2 from the outlet 112 of the inlet channel 11. Furthermore, the overflow pipe 3 is connected to the outside atmosphere through the notch 121, ensuring smooth drainage of water from the overflow pipe 3 into the outer drum 2.

[0062] Preferably, the overflow hole 122 is located at the other end of the overflow channel 12, that is, one end of the overflow pipe 3 is connected to the overflow hole 122.

[0063] The overflow hole 122 is located at the lowest point of the overflow channel 12, so that water entering the overflow channel 12 can be discharged as much as possible, avoiding water accumulation in the overflow channel 12. More preferably, the overflow hole 122 is located at the bottom of the side wall of the detergent box 1.

[0064] like Figures 1 to 2 As shown, the overflow pipe 3 is equipped with a vent overflow port 31, which is connected to the outside atmosphere. The vent overflow port 31 is level with the highest water level inside the outer cylinder 2.

[0065] The present application is characterized in that a gas-permeable overflow port 31 is arranged on the overflow pipe 3 to communicate with the outside air, which can ensure smooth water flow and is flush with the highest water level in the outer cylinder 2, and can overflow from the gas-permeable overflow port 31 when the water level in the outer cylinder 2 exceeds the highest water level. When the overflow water in the outer cylinder 2 is large, it can also overflow from the gap 121.

[0066] Preferably, the gas-permeable overflow port 31 is arranged at the upper end of the overflow pipe 3 and extends upward from the side of the overflow pipe 3.

[0067] The outer cylinder 2 is provided with a drain connection pipe 41. One end of the drain connection pipe 41 communicates with the outer cylinder 2, and the other end of the drain connection pipe 41 communicates with a drain pump 42 or a drain valve 43. The other end of the overflow pipe 3 communicates with the drain connection pipe 41. The drain connection pipe 41 is a corrugated connection pipe.

[0068] When the washing machine is a bottom drain type washing machine, the bottom of the outer cylinder 2 communicates with the drain valve 43 through the drain connection pipe 41. When water is filled, the drain valve 43 is controlled to be closed, and the water in the overflow pipe 3 enters the outer cylinder 2 through the drain connection pipe 41.

[0069] When the washing machine is an upper drain type washing machine, the bottom of the outer cylinder 2 communicates with the drain pump 42 through the drain connection pipe 41, and the water in the outer cylinder 2 is pumped by the drain pump 42 to the upper drain pipe for drainage. When water is filled, the drain pump 42 is controlled to stop working, and the outer cylinder 2 can be filled with water for washing, and the water in the overflow pipe 3 enters the outer cylinder 2 through the drain connection pipe 41.

[0070] Such an arrangement can make the anti-siphon overflow structure applicable to both impeller washing machines and drum washing machines.

[0071] Further, the washing machine can be a top-opening drum washing machine. The axis of the outer cylinder 2 extends forward and backward, and the top of the peripheral wall of the outer cylinder 2 is provided with a clothes feeding port 21 (see Figure 2 ).

[0072] The washing machine can be a single-cylinder washing machine or a double-cylinder washing machine, which has the same structure as the existing two types of washing machines and will not be described here.

[0073] The detergent box 1 is located above the outer cylinder 2 outside the peripheral of the clothes feeding port 21. The overflow pipe 3 extends outward beyond the peripheral wall of the outer cylinder 2 from the overflow hole 122 in the transverse direction, and then extends downward below the outer cylinder 2, and then extends to communicate with the drain connection pipe 41. The gas-permeable overflow port 31 is arranged on the part of the overflow pipe 3 that extends downward.

[0074] The overflow pipe 3 is arranged on one side of the peripheral wall of the outer cylinder 2, and is installed by using the space between the peripheral wall of the outer cylinder 2 and the box. The overflow pipe 3 can be connected with the mounting column protruding from the peripheral wall of the outer cylinder 2 by the mounting ears protruding from the outer wall of the overflow pipe 3, or can be connected with the end face of the outer cylinder 2 in the axial direction. Alternatively, the mounting ears are fixed on the inner wall of the box of the washing machine.

[0075] When the outer cylinder 2 is filled with water, the bottom of the outer cylinder 2 is communicated with the overflow pipe 3, and as the water level in the outer cylinder 2 rises, the water level in the overflow pipe 3 also gradually rises. When the water level in the outer cylinder 2 is too high, the overflow pipe 3 is arranged vertically downward, so that the water in the outer cylinder 2 can flow into the overflow pipe 3 and overflow upward from the air-permeable overflow port 31.

[0076] As shown in Figures 3 to 8 The water inlet channel 11 has a certain extension length. The water inlet channel 11 is provided with a water inlet 111 and a water outlet 112 at two ends of the extension length respectively. One end of the overflow channel 12 is arranged close to the water inlet 111 of the water inlet channel 11.

[0077] Since the water inlet pressure at the water inlet 111 is larger, the one end of the overflow channel 12 is arranged close to the water inlet 111 of the water inlet channel 11, so that the water has a large enough water inlet pressure to flow to the water outlet end of the water inlet channel 11, and most of the water flow is prevented from flowing away from the overflow channel 12.

[0078] The overflow channel 12 is located below the water inlet channel 11. One end of the overflow channel 12 is communicated with the water inlet 113 on the bottom wall of one end of the water inlet channel 11.

[0079] The notch 121 and the overflow hole 122 are arranged on the side wall of the other end of the overflow channel 12 respectively.

[0080] The water inlet channel 11 is provided with a water inlet 111 and a water outlet 112 at two ends of the extension length respectively. One end of the overflow channel 12 is arranged close to the water inlet 111 of the water inlet channel 11.

[0081] Preferably, the water inlet 111 is arranged on the bottom wall of the edge of one end of the water inlet channel 11, and the water outlet 112 is arranged on the end face of the other end of the water inlet channel 11.

[0082] Further, the notch 121 is arranged below the water inlet channel 11. Preferably, the upper edge of the notch 121 is flush with or lower than the bottom wall of the water inlet channel 11.

[0083] If the overflow of the outer cylinder 2 is large, it can be discharged from the gap 121 below the water inlet channel 11, thus preventing the overflow water from entering the water inlet channel 11 and preventing water leakage caused by excessive water pressure in the water inlet channel 11.

[0084] like Figures 6 to 8 As shown, the water inlet channel 11 is located on the outer periphery of the detergent box 1, and extends in an arc shape from the water inlet end to the water outlet end in the circumferential direction.

[0085] The overflow channel 12 is located on the outer periphery of the detergent box 1. The other end of the overflow channel 12 extends in the opposite direction from the drain outlet 113 along the extension direction of the water inlet channel 11.

[0086] The extension length of the overflow channel 12 is less than the extension length of the inlet channel 11. Furthermore, the other end of the overflow channel 12 is a certain distance from the other end of the inlet channel 11. The overflow hole 122 and the notch 121 are connected to the other end of the overflow channel 12.

[0087] This allows for a more rational arrangement of the positions of the notch 121 and the overflow hole 122, facilitating the connection of the overflow pipe 3 and avoiding conflicts with the water inlet channel 11 and the water inlet 111 and outlet 112 set on the water inlet channel 11. It also ensures that the internal space of the detergent box 1 is fully utilized, while making the water flow in the water inlet channel 11 and the water flow in the overflow channel 12 smoother.

[0088] Furthermore, the drain outlet 113 extends a certain length along the direction of water flow. The extension length of the drain outlet 113 is greater than the inner diameter of the water inlet 111. The notch 121 extends laterally for a certain length, similar to the extension length of the drain outlet 113.

[0089] The water inlet channel 11 includes a first channel section and a second channel section.

[0090] The inner diameter of the first channel section gradually decreases as it extends along the water flow direction to the inlet end of the drain outlet 113. The inlet 111 is located on the first channel section. The inner diameter of the second channel section gradually increases as it extends along the water flow direction from the outlet end of the drain outlet 113, and the bottom wall of the second channel section gradually decreases.

[0091] In this invention, the inner diameter of the first channel section gradually decreases along the direction of water flow, while the water pressure gradually increases, allowing the water to pass over the drain outlet 113 and enter the second channel section. Meanwhile, the inner diameter of the second channel section gradually increases along the direction of water flow, and the bottom wall is set to gradually decrease, enabling the water entering the second channel section to flow quickly towards the outlet, facilitating the continued flow of water from the first channel section into the second channel section, thus ensuring smooth water flow within the water inlet channel 11.

[0092] Preferably, the drain outlet 113 penetrates the bottom wall of the water inlet channel 11 and extends to both sides of the bottom wall of the water inlet channel 11 in the width direction.

[0093] The overflow channel 12 has several raised ribs 123 on its bottom wall opposite to the drain outlet 113, and the raised ribs 123 are located near the water outlet end of the drain outlet 113. The raised ribs 123 can reduce water splashing and reduce the deposition of residues in the overflow channel 12.

[0094] Specifically, the detergent box 1 has a certain extension length.

[0095] The water inlet end of the water inlet channel 11 is located on one edge along the length of the detergent box 1, near the end of the detergent box 1 along the length. The water outlet end of the water inlet channel 11 extends along the edge of the detergent box 1, passes through the other end along the length of the detergent box 1, and then extends through the width of the detergent box 1 to the middle part of the other edge along the length of the detergent box 1.

[0096] One end of the overflow channel 12 is located below the water inlet end of the water inlet channel 11, and the other end of the overflow channel 12 extends along the edge of the detergent box 1 to one end of the detergent box 1.

[0097] like Figures 7 to 8 As shown, the detergent box 1 includes a bottom shell 13, an upper shell 14, and a cover plate 15.

[0098] The upper shell 14 is fastened to the lower shell 13 and forms an overflow channel 12 inside. The overflow hole 122 is provided on the side wall of the lower shell 13, and the notch 121 is provided on the side wall of the upper shell 14.

[0099] The top wall of the upper shell 14 has an extending flow channel groove along its outer peripheral edge. The flow channel groove partially overlaps with the overflow channel 12 below, and the overlapping portion has an overflow hole 122, which communicates with one end of the overflow channel 12. One end of the flow channel groove extends circumferentially outwards from the body of the upper shell 14. The water inlet 111 is located on the bottom wall of the upper shell 14 where the flow channel groove protrudes from the body of the upper shell 14.

[0100] The cover plate 15 is fastened to the top of the flow channel groove of the upper shell 14 to form the water inlet channel 11.

[0101] The present invention also provides a washing machine with anti-siphon and anti-overflow functions, having any of the anti-siphon and anti-overflow structures described above. This can improve the safety and convenience of using the washing machine.

[0102] The washing machine can be either a top-loading washing machine or a front-loading washing machine.

[0103] Preferably, the washing machine is a drum washing machine.

[0104] The water inlet 111 of the water inlet channel 11 and the overflow hole 122 of the overflow channel 12 are arranged at the front end of the anti-siphon overflow structure and close to the front of the outer drum 2.

[0105] The drain pump 42 is located at the rear side of the bottom of the outer drum 2. The drain connecting pipe 41 extends from the bottom of the outer drum 2 to the rear side and communicates with the drain pump 42.

[0106] The overflow pipe 3 extends from the overflow hole 122 at the front end of the washing machine, beyond the outer peripheral wall of the outer drum 2 on one side (left or right) of the washing machine, then extends downward below the outer drum 2, continues to extend rearward to the rear side of the rear wall of the outer drum 2, and finally extends to the middle position of the rear side of the outer drum 2 and communicates with the drain connecting pipe 41.

[0107] The air-permeable overflow port 31 is arranged at the upper part of the downwardly extending part of the overflow pipe 3. The overflow pipe 3 is also provided with a fixing structure, such as a mounting ear, which can be fixed to the inner wall of the cabinet.

[0108] The drum washing machine can be a washing machine with only a clothes feeding port 21. The drum washing machine can also be a washing machine with a front feeding port and a clothes feeding port 21 for feeding clothes from the top of the drum.

[0109] The above description is only the preferred embodiments of the present application and does not limit the present application in any form. Although the present application has been disclosed as the above preferred embodiments, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the above-mentioned technical content without departing from the technical solution of the present application, and the equivalent embodiments with equivalent changes are equivalent. The embodiments in the above examples can be further combined or replaced, but as long as it does not deviate from the technical solution of the present application, any simple modification, equivalent change and modification of the above examples according to the technical essence of the present application are still within the scope of the present application.

Claims

1. A siphon-preventing overflow structure of a detergent box, characterized by, The detergent box comprises: a water inlet channel and an overflow channel which are independent respectively; one end of the overflow channel is communicated with the water inlet channel; the overflow channel is provided with a notch which is communicated with the outside air; an overflow pipe, one end of which is communicated with the overflow channel and is located below the notch, and the other end of the overflow pipe is used for being communicated with the outer cylinder.

2. The anti-siphon overflow structure of the detergent box according to claim 1, wherein the overflow channel is provided with an overflow hole which is communicated with one end of the overflow pipe, and the notch is higher than the overflow hole; preferably, the notch is provided through the outer wall of the detergent box. one end of the overflow pipe is communicated with the other end of the overflow channel, and the other end of the overflow pipe is used for being communicated with the drain port at the bottom of the outer cylinder.

3. The siphon-preventing overflow structure of a detergent box according to claim 2, wherein 4. The anti-siphon overflow structure of the detergent box according to claim 3, wherein the outer cylinder is provided with a drain connection pipe, one end of the drain connection pipe is communicated with the outer cylinder, and the other end of the drain connection pipe is communicated with a drain pump or a drain valve; the other end of the overflow pipe is communicated with the drain connection pipe.

5. The anti-siphon overflow structure of the detergent box according to claim 4, wherein the top of the peripheral wall of the outer cylinder is provided with a clothes feeding port; the detergent box is located above the outer cylinder outside the peripheral of the clothes feeding port; the overflow pipe extends outwardly from the overflow hole to exceed the peripheral wall of the outer cylinder, and then extends downwardly to below the outer cylinder, and then extends to be communicated with the drain connection pipe.

6. The anti-siphon overflow structure of the detergent box according to any one of claims 1-5, wherein the upper end of the overflow pipe is provided with a breathable overflow port which is communicated with the outside air; the breathable overflow port is flush with the highest water level in the outer cylinder. the water inlet channel has a certain extension length, the water inlet channel is provided with a water inlet port and a water outlet port at both ends of the extension length, and the bottom wall of the end of the water inlet channel is provided with a water falling hole; one end of the overflow channel is communicated with the water falling hole; the notch is provided through the outer wall of the detergent box, and the notch and the overflow hole are provided on the side wall of the other end of the overflow channel. the water inlet channel is arranged at the outer peripheral edge in the detergent box and extends in an arc shape along the circumferential direction from the water inlet end to the water outlet end; the overflow channel is arranged at the outer peripheral edge in the detergent box; the other end of the overflow channel extends in the direction opposite to the extension direction of the water inlet channel and has a certain distance from the other end of the water inlet channel; the overflow hole and the notch are communicated on the other end of the overflow channel.

7. A siphon-preventing overflow structure of a detergent box according to any one of claims 2 to 6, wherein 9. The anti-siphon overflow structure of the detergent box according to claim 7, wherein the water falling hole extends a certain length along the water inlet flow direction; the water inlet channel comprises: a first channel section, the inner diameter of which gradually decreases along the water inlet flow direction to the water inlet end of the water falling hole; 8. The siphon-preventing overflow structure of a detergent box according to claim 7, wherein a second channel section, the inner diameter of which gradually increases along the water inlet flow direction from the water outlet end of the water falling hole, and the bottom wall of the second channel section is gradually lower. ​ ​ ​ ​ ​ Preferably, the overflow channel is provided with a plurality of ribs on the bottom wall opposite to the water outlet, and the ribs are arranged close to the water outlet.

10. A laundry machine characterized by: The anti-siphon overflow structure of the detergent box according to any one of claims 1-9.

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