Washing box overflow prevention device and washing machine

Abstract

The present invention provides a washing box anti-overflow device and a washing machine. The washing box anti-overflow device comprises a washing box, a water inlet pipe, an outer drum and a drain pipe which are connected in sequence. The washing box anti-overflow device also comprises a drainage pipe assembly; the drainage pipe assembly is connected between the washing box and the drain pipe, and the drainage pipe assembly is connected between the water inlet pipe and the drain pipe. The washing machine comprises a washing box anti-overflow device. The internal pressure of the washing box is atmospheric pressure. This arrangement can solve the problem of abnormal air pressure in the drain pipe. The water in the washing box gradually enters the drainage pipe assembly from the water inlet pipe and finally flows out from the drain pipe. During the process, the water flow gradually eliminates and carries the foam in the water pipe and the drain pipe. The internal pressure of the water inlet pipe and the drain pipe tend to change normally. The water flow entering the inner drum through the water inlet pipe gradually rises to eliminate the foam in the drum. The air pressure in the washing box, the water inlet pipe, the drum and the drain pipe returns to normal. At this time, continuing to replenish water can effectively remove the foam in the drum and no longer cause the problem of washing box overflow.

Description

Technical Field

[0001] The invention relates to the technical field of washing machines, and in particular to a washing box anti-overflow device and a washing machine. Background Art

[0002] The existing drum washing machine has a washing box, a water inlet pipe, a drum and a drain pipe which are connected in sequence. The drum includes an outer drum and an inner drum located inside the outer drum. When the washing machine is working, the incoming water first reaches the washing box and then enters the drum through the water inlet pipe. When the user puts in too much washing powder or detergent, a large amount of foam is generated in the drum during the washing process. The foam accumulates at the water inlet pipe and causes abnormal pressure in the drum. When the liquid level sensor detects abnormal pressure in the drum, the washing machine will enter the defoaming mode and pass a large amount of water to remove and remove the foam.

[0003] Since the foam blocks the water inlet pipe and affects the air pressure, when a large amount of water is introduced, the water cannot flow smoothly into the drum and is stored in the washing box until it overflows out of the washing machine. In existing washing machines, an exhaust pipe is added between the washing box and the outer drum to release the pressure in the drum so that the water can flow smoothly into the drum.

[0004] The existing problem of this type of washing machine is that when the drum is filled with foam, the foam not only blocks the water inlet pipe, but also the exhaust pipe and the drain pipe are filled with foam and the air pressure is abnormal. At this time, the exhaust pipe and the drain pipe fail, and it is still difficult for water to flow into the drum through the water inlet pipe. The problem of water overflow at the washing box has not been solved. Summary of the invention

[0005] The first object of the present invention is to provide a washing box anti-overflow device which effectively solves the problem of water overflow at the washing box.

[0006] A second object of the present invention is to provide a washing machine that effectively solves the problem of water overflow at the washing box.

[0007] The first purpose of the present invention provides a washing box overflow prevention device, which includes a washing box, a water inlet pipe, an outer drum and a drain pipe connected in sequence. The washing box overflow prevention device also includes a drainage pipe assembly; the drainage pipe assembly is connected between the washing box and the drain pipe, and the drainage pipe assembly is connected between the water inlet pipe and the drain pipe.

[0008] It can be seen from the above scheme that the drainage pipe assembly is connected between the washing box and the drain pipe, and the internal pressure of the washing box is atmospheric pressure. This setting can solve the problem of abnormal air pressure in the drain pipe. Under this premise, the water in the washing box gradually enters the drainage pipe assembly from the water inlet pipe, and finally flows out from the drain pipe; in the process of water flowing into the drainage pipe assembly from the water inlet pipe and flowing out through the drain pipe, the foam in the water pipe and the drain pipe is gradually eliminated and brought into the water pipe and the drain pipe. The internal pressure of the water inlet pipe and the internal pressure of the drain pipe tend to change normally, and the water flow entering the inner drum through the water inlet pipe gradually recovers to eliminate the foam in the drum, thereby restoring the air pressure in the washing box, the water inlet pipe, the drum and the drain pipe to normal. At this time, continuing to replenish water can effectively remove the foam in the drum, and the problem of water overflow in the washing box will no longer occur.

[0009] A further solution is that the drainage tube assembly is connected to the bottom of the washing box.

[0010] As can be seen from the above, this arrangement enables the part of the drainage pipe assembly connected to the washing box to not only adjust the air pressure of the drain pipe, but also to drain part of the water inside the washing box to the drain pipe, thereby improving the drainage efficiency and internal pressure adjustment efficiency.

[0011] A further solution is that the drainage pipe assembly is connected to the upper part of the water inlet pipe.

[0012] As can be seen from the above, this arrangement can further prevent the water flow from being affected by the foam in the water inlet pipe and smoothly enter the drainage pipe assembly to achieve drainage.

[0013] A further solution is that the connecting port between the drainage pipe assembly and the water inlet pipe is arranged horizontally.

[0014] As can be seen from the above, this arrangement can prevent water from entering the drainage pipe assembly when the washing machine is operating normally, thereby causing water waste.

[0015] A further solution is that the drainage pipe assembly includes a first pipe section, a second pipe section, a third pipe section and a tee, and the first pipe section, the second pipe section and the third pipe section are connected by a tee; the first pipe section is connected to the washing box, the second pipe section is connected to the water inlet pipe, and the third pipe section is connected to the drain pipe.

[0016] Another further solution is that the drainage pipe assembly includes a first drainage pipe and a second drainage pipe; the first drainage pipe is connected between the washing box and the drain pipe, and the second drainage pipe is connected between the water inlet pipe and the drain pipe.

[0017] It can be seen from the above that the above two arrangements of the drainage pipe assembly can both achieve the functions of adjusting the internal pressure of the drain pipe and draining the water in the washing box.

[0018] A further solution is that the drainage tube assembly is a hose assembly.

[0019] As can be seen from the above, since the positions of the components in the washing machine body are fixed, the additional drainage pipe assembly is made of soft material for easy arrangement, thereby avoiding unnecessary increase in the size of the washing machine.

[0020] A further solution is that the washing box anti-overflow device also includes an exhaust pipe, the exhaust pipe is connected between the washing box and the outer drum, and the exhaust pipe is located above the water inlet pipe.

[0021] It can be seen from the above that when the amount of foam in the drum is small, the exhaust pipe can effectively maintain the air pressure in the drum at normal levels, further ensuring the stability of the internal pressure of the washing system and further avoiding the problem of water overflow in the washing box.

[0022] A further solution is that a buckle is provided on the outer periphery of the outer tube, and the drainage tube assembly is fixed on the buckle.

[0023] A further solution is that a plurality of buckles are arranged along the circumference of the outer tube, and the drainage tube assembly is fixed to the outer periphery of the outer tube along the circumference of the outer tube.

[0024] Another further solution is that the buckle includes two buckle arms arranged opposite to each other, the buckle arms extend from the outer periphery of the outer tube, a buckle position is formed between the two buckle arms, and the distance between the two buckle arms decreases at the extended ends of the two buckle arms; the drainage tube assembly is located in the buckle position.

[0025] As can be seen from the above, this arrangement can quickly and effectively fix the drainage pipe assembly outside the outer drum, thereby improving production efficiency; the arrangement of the drainage pipe assembly along the outer circumference of the outer drum can minimize the influence of the drainage pipe assembly on other structures of the washing machine, and can prevent the vibration of the outer drum from colliding with the drainage pipe assembly, thereby avoiding the generation of abnormal noise.

[0026] The second object of the present invention is to provide a washing machine comprising a washing box anti-overflow device, and the washing box anti-overflow device adopts the above-mentioned washing box anti-overflow device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of an embodiment of the anti-overflow device for a washing box of the present invention from a first perspective.

[0028] Figure 2 It is a structural schematic diagram of the second viewing angle of an embodiment of the washing box anti-overflow device of the present invention.

[0029] Figure 3 It is a schematic structural diagram of the outer cylinder and the drainage pipe assembly in the embodiment of the anti-overflow device of the washing box of the present invention. DETAILED DESCRIPTION

[0030] See also Figure 1 and Figure 2 , Figure 1 and Figure 2The first and second perspectives of the washing box overflow prevention device of the present invention are schematic diagrams of the structure of the embodiment of the washing box overflow prevention device of the present invention. The washing machine provided by the present invention is a drum washing machine, and the washing machine has a washing box overflow prevention device, which is composed of a washing box 1, a water inlet pipe 2, an outer drum 3, a drain pipe 4, a drainage pipe assembly 5 and an exhaust pipe 6. The washing machine has a drum, and the drum includes the above-mentioned outer drum 3 and an inner drum (not shown in the figure) located in the outer drum 3, and the outer drum 3 is connected to the inner drum.

[0031] The interior of the washing box 1 is a space for accommodating washing powder or washing liquid, the upper end of the water inlet pipe 2 is connected to the bottom of the washing box 1, and the lower end of the water inlet pipe 2 is connected to the upper part of the outer tub 3; an exhaust pipe 6 is also connected between the upper part of the washing box 1 and the upper part of the outer tub 3, and the port of the exhaust pipe 6 connected to the outer tub 3 is located above the port of the water inlet pipe 2 connected to the outer tub 3. The drain pipe 4 includes an extended pipe section 41 and a bent pipe section 42 connected in a curved manner, and the extended pipe section 41 is connected to the bottom of the outer tub 3.

[0032] The drainage pipe assembly 5 includes a first pipe section 51, a second pipe section 52, a third pipe section 53 and a tee 50. The first pipe section 51, the second pipe section 52 and the third pipe section 53 are all hoses, and the first pipe section 51, the second pipe section 52 and the third pipe section 53 are connected through the tee 50. The upper end of the first pipe section 51 is connected to the bottom of the washing box 1, the upper end of the second pipe section 52 is horizontally connected to the upper part of the vertically arranged water inlet pipe 2, and the third pipe section 53 is connected to the extension pipe section 41 of the drainage pipe 4.

[0033] Recombination Figure 3 , Figure 3 The schematic diagram of the structure of the outer cylinder and the drainage tube assembly in the embodiment of the washing box overflow prevention device of the present invention. The outer circumference of the outer cylinder 3 is provided with a plurality of buckles 31 arranged along the circumference of the outer cylinder 3, and the buckle 31 includes two buckle arms 311 arranged opposite to each other, and the buckle arms 311 extend from the outer circumference of the outer cylinder 3, and a buckle position 310 is formed between the two buckle arms 311, and the distance between the two buckle arms 311 decreases at the extended ends of the two buckle arms 311.

[0034] The third pipe section 53 is buckled in the buckle positions 310 of the buckles 31, so the third pipe section 53 is attached to the outer circumference of the outer tube 3 and fixed along the circumference of the outer tube 3. The first pipe section 51 and the second pipe section 52 are shorter and the third pipe section 53 is longer, so the drainage tube assembly 5 can be effectively fixed by only fixing the longer third pipe section 53.

[0035] When the user adds excessive detergent or liquid when washing clothes, the drum is filled with foam, and the foam accumulates at the water inlet pipe 2, the exhaust pipe 6 and the drain pipe 4. At this time, if the liquid level sensor detects that the pressure inside the drum exceeds the preset threshold, the control system of the washing machine determines that the pressure inside the drum is abnormal and enters the "defoaming mode". The "defoaming mode" is a working mode in which a large amount of water is introduced to eliminate and remove the foam in the water inlet pipe 2, the drum and the drain pipe 4.

[0036] After the system enters the "defoaming mode", the water inlet valve of the washing machine is opened, and the water flows into the washing box 1 first. At this time, the water flow cannot smoothly enter the water inlet pipe 2 and the exhaust pipe 6. Since the internal pressure of the washing box 1 is atmospheric pressure, even if the air pressure in the drum is abnormal, the water flow of the washing box 2 can be discharged through the drainage pipe assembly 5 and the drain pipe 4; due to the foam blocking, part of the water flow entering the water inlet pipe 2 slowly passes through the water inlet pipe 2 and reaches the drum, and the other part enters the second pipe section 52 and reaches the drain pipe 4 for discharge.

[0037] During the defoaming process, the water flow gradually eliminates and carries out the foam in the water inlet pipe 2 and the drain pipe 4, the internal pressures of the water inlet pipe 2 and the drain pipe 4 gradually change to normal, and the water flow entering the inner drum through the water inlet pipe 4 gradually increases to eliminate the foam in the drum, thereby returning the air pressure in the washing box 1, the water inlet pipe 2, the drum and the drain pipe 4 to normal. At this time, continuing to replenish water can effectively remove the foam in the drum, and the problem of water overflow in the washing box will no longer occur.

[0038] In other embodiments, the drainage pipe assembly includes a first drainage pipe and a second drainage pipe, the first drainage pipe is connected between the washing box and the drain pipe, and the second drainage pipe is connected between the water inlet pipe and the drain pipe. This embodiment requires that the first drainage pipe and the second drainage pipe are both fixed to the outer periphery of the outer tube through corresponding multiple buckles.

[0039] In other embodiments, the horizontal position of the connecting port between the first pipe section and the washing box is higher than the horizontal position of the connecting port between the water inlet pipe and the washing box. This arrangement allows water to flow into the water inlet pipe first when the washing machine is in normal use, thereby avoiding waste of water resources. In the "defoaming mode", more water in the washing box will flow from the water inlet pipe into the second pipe section, and the first pipe section plays a role in balancing the air pressure in the drain pipe and providing auxiliary drainage.

[0040] Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A washing box anti-overflow device, comprising a washing box, a water inlet pipe, an outer cylinder and a drain pipe connected in sequence, characterized in that: The washing box anti-overflow device also includes a drainage pipe assembly; The drainage pipe assembly is connected between the washing box and the drain pipe, and the drainage pipe assembly is connected between the water inlet pipe and the drain pipe; The drainage pipe assembly is connected to the bottom of the washing box, and the portion of the drainage pipe assembly connected to the washing box is used to adjust the air pressure of the drainage pipe; The drainage pipe assembly is connected to the upper part of the water inlet pipe, and the water in the washing box can gradually enter the drainage pipe assembly from the water inlet pipe; The washing box anti-overflow device further includes an exhaust pipe, the exhaust pipe is connected between the washing box and the outer tub, and the exhaust pipe is located above the water inlet pipe; The drainage tube assembly comprises a first tube segment, a second tube segment, a third tube segment and a tee, and the first tube segment, the second tube segment and the third tube segment are connected through the tee; The first pipe section is communicated with the washing box, the second pipe section is communicated with the water inlet pipe, and the third pipe section is communicated with the drain pipe.

2. The washing box anti-overflow device according to claim 1, characterized in that: The communication port between the drainage pipe assembly and the water inlet pipe is arranged horizontally.

3. The washing box anti-overflow device according to claim 1, characterized in that: The drainage tube assembly is a hose assembly.

4. The washing box anti-overflow device according to claim 1, characterized in that: A buckle is provided on the outer periphery of the outer tube, and the drainage tube assembly is fixed on the buckle.

5. The washing box anti-overflow device according to claim 4, characterized in that: A plurality of the buckles are arranged along the circumference of the outer tube, and the drainage tube assembly is fixed to the outer periphery of the outer tube along the circumference of the outer tube.

6. The washing box anti-overflow device according to claim 5, characterized in that: The buckle comprises two buckle arms arranged opposite to each other, the buckle arms extend from the outer periphery of the outer tube, a buckle position is formed between the two buckle arms, and the distance between the two buckle arms decreases at the extended ends of the two buckle arms; The drainage tube assembly is located in the buckle position.

7. A washing machine, comprising a washing box anti-overflow device, characterized in that: The washing box anti-overflow device adopts the washing box anti-overflow device according to any one of claims 1 to 6 above.

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