Waterway system of washing machine and washing machine

Abstract

The present application relates to the technical field of clothes processing equipment, and particularly provides a waterway system of a washing machine and the washing machine, aiming to solve the problem that the existing washing machine is prone to water accumulation in the water inlet pipeline and is not easy to drain, resulting in mold smell in the waterway system and affecting the washing effect. To this end, the waterway system comprises a water inlet pipeline, a water inlet valve, a drainage pipeline, a drainage pump and a emptying pipeline; the water inlet of the water inlet pipeline is in communication with the outside of the washing machine, the water outlet of the water inlet pipeline is in communication with a drum assembly of the washing machine, and the water inlet valve is arranged on the water inlet pipeline; the water inlet of the drainage pump is in communication with the drum assembly, the water outlet of the drainage pump is in communication with the water inlet of the drainage pipeline, and the water outlet of the drainage pipeline is in communication with the outside of the washing machine; the drainage pump further comprises a siphon inlet, the water inlet of the emptying pipeline is in communication with the water inlet pipeline, and the water outlet of the emptying pipeline is in communication with the siphon inlet, so as to suck the accumulated water in the water inlet pipeline into the drainage pipeline, thereby ensuring the clean and dry of the waterway system.

Description

Technical Field

[0001] This invention relates to the field of clothing processing equipment technology, specifically providing a water system for a washing machine and a washing machine. Background Technology

[0002] In recent years, with the development of technology and the improvement of people's living standards, washing machines have long been a household appliance, becoming an indispensable part of home life. In order to meet the increasingly diverse needs of users and improve the washing effect, manufacturers have continuously optimized and upgraded washing machines.

[0003] For example, optimizing the water system of the washing machine can enable precise control of the ratio and amount of water and detergent to improve the washing effect. At the same time, it can be matched with the overall structure of the washing machine to improve the utilization of internal space and achieve miniaturization of the equipment.

[0004] However, water tends to accumulate in the water inlet pipes of existing washing machines and is difficult to drain, leading to a musty smell in the water system and contaminating the washing water, thus affecting the washing effect.

[0005] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0006] The present invention aims to solve the above-mentioned technical problems, namely, that water tends to accumulate in the water inlet pipe of existing washing machines and is not easy to drain, which leads to a musty smell in the water system and contaminates the washing water, thus affecting the washing effect.

[0007] In a first aspect, the present invention provides a water system for a washing machine, the water system comprising: an inlet pipe, an inlet valve, a drain pipe, a drain pump, and a venting pipe; the inlet of the inlet pipe is connected to the outside of the washing machine, the outlet of the inlet pipe is connected to the drum assembly of the washing machine, and the inlet valve is disposed on the inlet pipe; the inlet of the drain pump is connected to the drum assembly, the outlet of the drain pump is connected to the inlet of the drain pipe, and the outlet of the drain pipe is connected to the outside of the washing machine; the drain pump further comprises a siphon, the inlet of the venting pipe is connected to the inlet pipe, and the outlet of the venting pipe is connected to the siphon, so as to draw accumulated water in the inlet pipe into the drain pipe.

[0008] In the preferred embodiment of the above-mentioned water system, the drainage pump includes a housing, a motor, and an impeller. An internal flow channel is formed inside the housing. The inlet, outlet, and siphon of the drainage pump are all located on the housing and communicate with the internal flow channel. The siphon is located at the point where the inner diameter of the internal flow channel is the smallest. The impeller is installed at the outlet of the drainage pump and is driven by the motor.

[0009] In the preferred embodiment of the above-mentioned water system, a throat section is provided in the internal flow channel. The throat section is located between the inlet and outlet of the drainage pump, and the inner diameter of the throat section is smaller than the inner diameter of other locations in the internal flow channel. The siphon is provided on the throat section. Alternatively, the internal flow channel may also include an interface section extending outward from the inlet of the drainage pump. The inner diameter of the interface section is smaller than the inner diameter of other locations in the internal flow channel, and the siphon is provided on the interface section.

[0010] In the preferred embodiment of the above-mentioned water system, the drainage pump further includes a filter element, and the housing is provided with an installation port that communicates with the internal flow channel. The filter element is installed in the internal flow channel through the installation port.

[0011] In the preferred embodiment of the above-mentioned water system, the water system further includes a dispensing component, which is connected to the inlet pipe.

[0012] In the preferred embodiment of the above water system, the dispensing component includes a liquid storage box and a liquid extraction pipe. The inlet of the liquid extraction pipe is connected to the liquid storage box, and the outlet of the liquid extraction pipe is connected to the water inlet pipe.

[0013] In the preferred embodiment of the above water system, the dispensing component further includes a suction pump, the inlet of which is connected to the storage box, and the outlet of which is connected to the pumping pipeline.

[0014] In the preferred embodiment of the above-mentioned water system, the water system further includes a connecting hose, the inlet of which is connected to the roller assembly, and the outlet of which is connected to the inlet of the drainage pump; and / or the inlet of the drain pipe is connected to the lowest point of the inlet pipe, and the inlet of the drain pipe is higher than the outlet of the drain pipe; and / or the middle section of the drain pipe is raised to a certain height to prevent wastewater in the drainage pipe from flowing back into the inlet pipe through the drain pipe.

[0015] In the preferred embodiment of the above water system, the roller assembly includes an upper roller and a lower roller, the outlet of the inlet pipe is connected to the upper roller and the lower roller, and the inlet of the drain pipe is connected to the upper roller and the lower roller.

[0016] In a second aspect, the present invention provides a washing machine comprising the aforementioned water system.

[0017] When the above technical solution is adopted, the water system of the present invention includes: an inlet pipe, an inlet valve, a drain pipe, a drain pump, and an emptying pipe; the inlet of the inlet pipe is connected to the outside of the washing machine, the outlet of the inlet pipe is connected to the drum assembly of the washing machine, and the inlet valve is disposed on the inlet pipe; the inlet of the drain pump is connected to the drum assembly, the outlet of the drain pump is connected to the inlet of the drain pipe, and the outlet of the drain pipe is connected to the outside of the washing machine; the drain pump also includes a siphon port, the inlet of the emptying pipe is connected to the inlet pipe, and the outlet of the emptying pipe is connected to the siphon port, so as to draw the accumulated water in the inlet pipe into the drain pipe. By setting up a drain pipe that connects the water inlet pipe and the drain pump, the drain pump can not only discharge the wastewater in the drum assembly, but also suck the residual water in the water inlet pipe into the drain pipe and discharge it from the washing machine through the drain pipe. This keeps the water inlet pipe clean and dry, prevents musty smells from growing in the water system, and avoids contamination of the washing water.

[0018] Furthermore, the drainage pump of the present invention includes a housing, a motor, and an impeller. An internal flow channel is formed inside the housing. The inlet, outlet, and siphon of the drainage pump are all located on the housing and communicate with the internal flow channel. The siphon is located at the smallest inner diameter of the internal flow channel. The impeller is installed at the outlet of the drainage pump and is driven by the motor. The rotation of the impeller generates a siphon effect at the siphon within the internal flow channel, drawing water from the inlet pipe into the drainage pipe through the drainage pipe. By placing the siphon at the smallest inner diameter of the internal flow channel, the flow velocity of the wastewater at that point is increased, thereby further increasing the suction force at the siphon according to Bernoulli's principle, and improving the drainage effect of the water accumulated in the inlet pipe.

[0019] Furthermore, the internal flow channel of the present invention includes a throat section located between the inlet and outlet of the drainage pump, with the inner diameter of the throat section being smaller than the inner diameter of other locations within the internal flow channel. The siphon port is located on the throat section. Alternatively, the internal flow channel may also include an interface section extending outward from the inlet of the drainage pump, with the inner diameter of the interface section being smaller than the inner diameter of other locations within the internal flow channel. The siphon port is located on the interface section. This arrangement provides multiple siphon port location options, allowing for flexible placement of the siphon port as needed. While ensuring the siphon effect, it also helps to reduce processing difficulty and cost.

[0020] Furthermore, the drain pump of the present invention also includes a filter element, and the housing is provided with an installation port communicating with the internal flow channel. The filter element is installed in the internal flow channel through the installation port. With this arrangement, on the one hand, the filter element can prevent foreign objects such as lint from falling from clothing from being washed into the drain pump by the water flow, causing blockage or even damage to the drain pump; on the other hand, the installation port enables convenient disassembly and assembly of the filter element, making it convenient for users to clean or replace the filter element, thus improving the convenience of maintenance.

[0021] Furthermore, the water system of the present invention also includes a dispensing component, which is connected to the water inlet pipe. With this arrangement, the washing liquid can be first dispensed into the water inlet pipe to mix with the washing water, and then the mixed solution can be dispensed into the drum assembly, so that the washing liquid and washing water are more fully mixed, thereby enabling it to spread evenly on the clothes and improving the washing effect.

[0022] Furthermore, the dispensing component of this invention includes a liquid storage box and a liquid extraction pipe. The inlet of the liquid extraction pipe is connected to the liquid storage box, and the outlet of the liquid extraction pipe is connected to the water inlet pipe. This configuration enables the storage and automatic dispensing of the detergent, improving dispensing efficiency.

[0023] Furthermore, the dispensing component of this invention also includes a suction pump, the inlet of which is connected to the storage tank, and the outlet of which is connected to the suction pipeline. This configuration allows for precise control of the dispensing speed and volume of the detergent, ensuring dispensing efficiency while preventing waste.

[0024] Furthermore, the water system of the present invention also includes a connecting hose, the inlet of which is connected to the roller assembly, and the outlet of which is connected to the inlet of the drain pump; and / or the inlet of the drain pipe is connected to the lowest point of the inlet pipe, and the inlet of the drain pipe is higher than the outlet of the drain pipe; and / or the middle section of the drain pipe is raised to a certain height to prevent wastewater in the drain pipe from flowing back into the inlet pipe through the drain pipe. The connecting hose allows for flexible adaptation to the relative position and interface direction of the drain pump and the roller assembly, enabling arbitrary connection between the two while ensuring a stable connection; the height difference between the inlet and outlet of the drain pipe facilitates the drainage of water accumulated in the inlet pipe; and raising the height of the middle section of the drain pipe prevents wastewater from flowing back into the inlet pipe through the drain pipe when the drain pump is turned off, thus preventing water accumulation and pollution.

[0025] Furthermore, the drum assembly of the present invention includes an upper drum and a lower drum, with the outlet of the water inlet pipe connected to both the upper and lower drums, and the inlet of the drain pipe connected to both the upper and lower drums. This arrangement enables zoned washing and care of clothing to meet the needs of different users or the simultaneous washing of different garments.

[0026] Furthermore, the washing machine provided by the present invention, based on the aforementioned water system, possesses the technical effects of the aforementioned water system. Compared to the washing machine before the improvement, the washing machine of the present invention can promptly drain the water in the inlet pipe after the washing mode is completed, avoiding the generation of musty smells due to dampness in the water system, and preventing water from contaminating the washing water and affecting the washing effect. Attached Figure Description

[0027] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0028] Figure 1 This is a schematic diagram of the structure of the washing machine of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of a first embodiment of the drainage pump of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of a second embodiment of the drainage pump of the present invention. Figure 1 ;

[0031] Figure 4 This is a schematic diagram of the structure of a second embodiment of the drainage pump of the present invention. Figure 2 .

[0032] List of reference numerals in the attached diagram:

[0033] 11. Inlet pipe; 12. Inlet valve; 13. Drain pipe; 14. Drain pump; 141. Housing; 1411. Drain pump inlet; 1412. Drain pump outlet; 1413. Siphon port; 1414. Throat section; 1415. Interface section; 1416. Mounting port; 142. Motor; 143. Impeller; 144. Filter element; 15. Drain pipe; 161. Liquid storage box; 162. Liquid suction pipe; 163. Suction pump; 17. Connecting hose; 18. T-joint; 2. Roller assembly; 21. Upper roller; 22. Lower roller. Detailed Implementation

[0034] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0035] It should be noted that in the description of this invention, terms such as "inner", "outer", "upper", "lower", "top", and "bottom" that indicate direction or positional relationship are based on the direction or positional relationship shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0036] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly, for example, referring to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] Based on the background art, existing washing machines often suffer from water accumulation in the inlet pipe, which is difficult to drain, leading to musty odors in the water system and contaminating the washing water, thus affecting washing performance. This invention provides a water system and washing machine. By incorporating a drain pipe within the water system, connecting the inlet pipe and a drain pump at both ends, and ensuring the drain pipe connects to the drain pump at its smallest inner diameter, a siphon effect is induced in the drain pipe. This draws accumulated water from the inlet pipe into the drain pipe, which is then discharged from the washing machine along with wastewater, preventing water accumulation in the inlet pipe and maintaining the cleanliness and dryness of the water system.

[0038] For example, the water system of a washing machine is usually composed of multiple different pipes and valves, including an inlet pipe and a drain pipe. The inlet pipe can deliver tap water and detergent into the drum, and the drain pipe can discharge wastewater after washing clothes to the outside of the washing machine.

[0039] Taking drum washing machines as an example, in order to improve washing efficiency and meet the diverse needs of users, existing drum washing machines are not limited to single-drum structures. They have also developed double-drum and multi-drum structures based on the single-drum structure. Correspondingly, the structure and distribution of the water system need to be reasonably optimized to adapt to the independent operation of multiple drums, meet the water supply and drainage needs of the washing machine in different modes, and improve the space utilization rate inside the machine body. While increasing the number of drums, it is also necessary to ensure that the machine body meets the standard dimensions (such as the European standard: machine height 850mm, machine width 600mm).

[0040] To maximize the size of the compressor body, the internal structure of multi-drum washing machines is very compact. This requires optimization and adjustment based on the traditional layout, such as moving the water inlet device from the top of the machine to the bottom to save height space.

[0041] This design means that during water supply, tap water must first flow from the bottom of the drum before entering it from the top. This results in some water remaining in the inlet pipes after the wash cycle, and this water is difficult to evaporate. Over time, it deteriorates, produces an odor, and contaminates the water used for the next wash, affecting washing performance. If the machine is idle for an extended period, it may also react with carbon dioxide in the air to form calcium deposits, clogging the pipes.

[0042] Based on this, such as Figure 1As shown, this invention provides a water system for a washing machine, preferably a drum washing machine, with its drum assembly 2 located in the upper middle part of the machine body for easy loading and unloading of clothes. In this invention, the drum assembly 2 includes an upper drum 21 and a lower drum 22. The structure of multiple drums enables zoned washing and care of clothes to meet the needs of different users or different clothes being washed simultaneously. The water system is located at the bottom of the drum assembly 2 and includes: a water inlet pipe 11, a water inlet valve 12, a drain pipe 13, a drain pump 14, and an emptying pipe 15, etc.

[0043] The water inlet pipe 11 passes through the back panel and enters the machine body, and extends forward along the bottom of the washing machine to the front of the drum assembly 2, and then extends upward and passes through the window pad of the drum assembly 2 to enter the interior of the drum assembly 2. The water inlet of the water inlet pipe 11 can be connected to an external water source (tap water pipe, etc.) to introduce tap water into the drum assembly 2.

[0044] The inlet valve 12 is installed on the inlet pipe 11, preferably at the inlet, and can control the opening and closing of the inlet pipe 11. It should be noted that in practical applications, those skilled in the art can flexibly set the inlet valve 12 as various control valves, such as solenoid valves, pressure valves, check valves, etc., as long as they can control the opening and closing of the inlet pipe 11. Such flexible adjustments and changes do not deviate from the principle and scope of the present invention and should be limited to the protection scope of the present invention.

[0045] Preferably, the water inlet valve 12 of the present invention is configured as a solenoid valve, which can be electrically connected to the controller of the washing machine so that the controller can control the opening and closing of the water inlet valve 12 according to different washing modes and operating states.

[0046] For example, the water inlet valve 12 is fixedly connected to a normally open tap water pipe. When the washing mode starts, the controller will control the water inlet valve 12 to open, so that tap water will automatically flow into the water inlet pipe 11 and flow upward into the drum assembly 2 under the action of water pressure.

[0047] Please refer to the appendix for further details. Figure 1 The drain pipe 13 also passes through the through hole on the back plate and extends longitudinally below the drum assembly 2. The drain pump 14 is installed between the inlet of the drain pipe 13 and the outlet of the drum assembly 2. Specifically, the inlet 1411 of the drain pump is connected to the outlet of the drum assembly 2, and the outlet 1412 of the drain pump is connected to the inlet of the drain pipe 13. The outlet of the drain pipe 13 extends through the back plate to the outside of the machine body so as to connect with the drain pipe and realize the discharge of washing wastewater.

[0048] Preferably, such as Figures 2 to 4As shown, the drainage pump 14 of the present invention includes a housing 141, a motor 142, and an impeller 143. An internal flow channel is formed inside the housing 141. The inlet 1411, outlet 1412, and siphon 1413 of the drainage pump are all provided on the housing 141 and communicate with the internal flow channel. The siphon 1413 communicates with the smallest inner diameter of the internal flow channel. The impeller 143 is installed at the outlet 1412 of the drainage pump. The motor 142 is installed outside the housing 141 and is driven by the impeller 143. By driving the impeller 143 to rotate, a negative pressure can be generated upstream of the impeller 143 to draw the wastewater in the drum assembly 2 and the accumulated water in the inlet pipe 11 into the drainage pipe 13 and finally discharge it into the sewer.

[0049] Connecting the siphon 1413 to the smallest inner diameter of the internal flow channel increases the flow velocity of wastewater at that point. According to Bernoulli's principle, this further increases the suction force at the siphon 1413, improving the drainage effect of the water in the inlet pipe 11.

[0050] Specifically, after the washing program ends, the controller will control the motor 142 to drive the impeller 143 to rotate, thereby generating a negative pressure upstream of the impeller 143 inside the housing 141. On the one hand, it can draw the wastewater in the drum assembly 2 from the inlet 1411 of the drain pump and then discharge it from the outlet 1412 of the drain pump to the drain pipe 13. On the other hand, it can draw the residual water in the inlet pipe 11 into the internal flow channel through the drain pipe 15 and then discharge it from the outlet 1412 of the drain pump to the drain pipe 13.

[0051] Regarding the location of the siphon inlet 1413, the present invention provides two preferred embodiments:

[0052] In the first preferred embodiment, such as Figure 2 As shown, a throat section 1414 is provided in the internal flow channel. The throat section 1414 is located between the inlet 1411 and the outlet 1412 of the drainage pump. The inner diameter of the throat section 1414 is smaller than the inner diameter of other locations in the internal flow channel. The siphon port 1413 is provided on the throat section 1414.

[0053] In the second preferred embodiment, such as Figure 3 and Figure 4 As shown, the internal flow channel also includes an interface section 1415 extending outward from the inlet 1411 of the drainage pump. The inner diameter of the interface section 1415 is smaller than the inner diameter of other locations in the internal flow channel, and the siphon port 1413 is provided on the interface section 1415.

[0054] It should be noted that the present invention is not limited to the above two solutions. As long as the siphon effect can be guaranteed, it is also beneficial to reduce the processing difficulty of the drainage pump 14.

[0055] Preferably, such as Figures 2 to 4 As shown, the drain pump 14 of the present invention also includes a filter element 144, and the housing 141 is further provided with an installation port 1416 communicating with the internal flow channel. The filter element 144 is installed in the internal flow channel through the installation port 1416. On the one hand, the filter element 144 can prevent foreign objects such as lint from falling from clothing from being washed into the drain pump 14 by the water flow, causing blockage or even damage to the drain pump 14; on the other hand, the installation port 1416 enables convenient disassembly and assembly of the filter element 144, making it convenient for users to clean or replace the filter element 144, thus improving the convenience of maintenance.

[0056] In addition, while delivering washing water to the drum assembly 2, it is also necessary to add washing liquid. To this end, the present invention provides a dispensing component connected to the water inlet pipe 11 below the water inlet pipe 11. The dispensing component can dispense washing liquid into the water inlet pipe 11, so that the washing liquid mixes with the washing water first, and then flows into the drum assembly 2 together. This allows the washing liquid and washing water to be more fully mixed, and thus can be more evenly spread to the clothes, improving the washing effect.

[0057] Preferably, such as Figure 1 As shown, the dispensing assembly includes a liquid storage box 161 and a liquid extraction pipe 162. The inlet of the liquid extraction pipe 162 is connected to the liquid storage box 161, and the outlet of the liquid extraction pipe 162 is connected to the water inlet pipe 11. It should be noted that during the dispensing process, the water flow in the water inlet pipe 11 can be used to install a Venturi tube at the outlet of the liquid extraction pipe 162 to draw the washing liquid into the water inlet pipe 11. Alternatively, a suction pump 163 can be installed to draw the washing liquid into the water inlet pipe 11. As long as the storage and automatic dispensing of the washing liquid can be achieved, and the dispensing efficiency is improved, such flexible adjustments and modifications do not deviate from the principles and scope of this invention and should be limited to the protection scope of this invention.

[0058] Preferably, this application includes a suction pump 163 installed on the suction pipeline 162, with the inlet of the suction pump 163 connected to the storage box 161 and the outlet of the suction pump 163 connected to the suction pipeline 162. This allows the suction pump 163 to draw the washing liquid from the storage box 161 into the water inlet pipeline 11. The suction pump 163 is also electrically connected to a controller, enabling real-time control of the pump. This not only improves suction efficiency but also allows for precise control of the washing liquid dispensing speed and volume, unaffected by water pressure, ensuring efficient dispensing while preventing excessive waste of washing liquid.

[0059] Preferably, such as Figure 1As shown, the water system of the present invention also includes a connecting hose 17, the inlet of the connecting hose 17 is connected to the roller assembly 2, and the outlet of the connecting hose 17 is connected to the inlet 1411 of the drain pump; the connecting hose 17 realizes a flexible connection between the roller assembly 2 and the drain pump 14, so as to flexibly adapt to the relative vibration and interface direction of the drain pump 14 and the roller assembly 2, realize the optimal distribution of the two, and at the same time ensure the connection between the two is stable.

[0060] In order to drain the water in the inlet pipe 11, preferably, the inlet of the drain pipe 15 is connected to the lowest point of the inlet pipe 11. For example, a tee 18 can be installed on the lowest section of the inlet pipe 11. The tee 18 includes a first interface, a second interface and a third interface. The first interface and the second interface are respectively connected to the two ends of the inlet pipe 11, and the third interface is oriented downwards and connected to the inlet of the drain pipe 15. Thus, the third interface is located at the lowest point of the entire inlet pipe 11, similar to a floor drain structure. At the same time, the inlet of the drain pipe 15 is slightly higher than the outlet of the drain pipe 15, so as to form a height difference between the inlet and outlet of the drain pipe 15. This allows the water in the inlet pipe 11 to flow to the drain pump 14 under a slight negative pressure at the outlet of the drain pipe 15.

[0061] The washing machine of the present invention adopts a top drainage form, that is, after the drain pipe 13 comes out from the bottom of the drum assembly 2, it first extends downward along the drum assembly 2 to the back plate, and then extends upward along the back plate to a certain height and passes through the drain hole provided on the back plate to the outside. By raising the drain pipe 13 to a certain height, it is possible to avoid water flowing into the water inlet pipe 11 and out through the drain pipe 13 at the same time during the water intake process.

[0062] Meanwhile, during drainage, thanks to the drainage pump 14, there is no need to worry about insufficient drainage pressure preventing water from flowing upwards through the drainage hole. Furthermore, top drainage allows the drainage pipe 13 to flexibly adapt to any type of sewer pipe, such as floor drains or wall drains, improving flexibility and convenience of use.

[0063] However, since the drainage pipe 13 is raised to a certain height, some wastewater will flow back when the drainage pump is turned off. If the wastewater height is higher than the entire drain pipe 15, the drainage pipe 13, the drain pipe 15 and the inlet pipe 11 will form a communicating vessel, causing wastewater to flow back into the inlet pipe 13 through the drain pipe 15, resulting in secondary water accumulation and pollution in the inlet pipe 13.

[0064] Therefore, the present invention also raises the middle section of the drain pipe 15 to a certain height, preferably making its height close to the highest point of the drain pipe 13, so as to prevent wastewater from flowing back into the inlet pipe 13.

[0065] The following is in conjunction with the appendix Figure 1 A detailed explanation of the working process of the water system is provided.

[0066] When the inlet valve 12 is opened, external tap water enters the roller assembly 2 through the inlet pipe 11. The roller assembly 2 forms a communicating vessel through the connecting hose 17, the drain pump 14, and the raised section of the drain pipe 13. That is to say, the tap water entering from the inlet pipe 11 must first enter the bottom of the communicating vessel, and only after the water flow fills the bottom of the communicating vessel will it enter the upper roller assembly 2.

[0067] While external tap water enters the drum assembly 2 through the inlet pipe 11, some tap water also enters the drain pump 14 through the drain pipe 15, which also fills the drum assembly 2 with water. Therefore, no water entering the drain pipe 15 is wasted. When the water level reaches the appropriate height, the washing machine controller will close the inlet valve 12. At this time, the inlet pipe 11 is full of water, and since both ends of the drain pipe 15 are submerged in water, it is also filled with tap water.

[0068] When the washing program ends and drainage is required, the controller activates the drain pump 14, generating negative pressure at the end of the drain pipe 15 (siphon port 1413) to trigger a siphon, sucking away all water from the drain pipe 15 and the water inlet pipe 11. This keeps the water inlet pipe 11 clean and dry, preventing musty odors from developing in the water system and avoiding contamination of the washing water during the next use.

[0069] Furthermore, the washing machine provided by the present invention, based on the aforementioned water system, possesses the technical effects of the aforementioned water system. Compared to the washing machine before the improvement, the washing machine of the present invention can promptly drain the water in the inlet pipe after the washing mode is completed, avoiding the generation of musty smells due to dampness in the water system, and preventing pipe contamination that would affect the washing effect.

[0070] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A water system for a washing machine, characterized in that, The water system includes: an inlet pipe (11), an inlet valve (12), a drain pipe (13), a drain pump (14), and an empty pipe (15); The inlet of the water inlet pipe (11) is connected to the outside of the washing machine, the outlet of the water inlet pipe (11) is connected to the drum assembly (2) of the washing machine, and the water inlet valve (12) is installed on the water inlet pipe (11). The inlet (1411) of the drain pump is connected to the drum assembly (2), the outlet (1412) of the drain pump is connected to the inlet of the drain pipe (13), and the outlet of the drain pipe (13) is connected to the outside of the washing machine. The drainage pump (14) also includes a siphon (1413), the inlet of the drain pipe (15) is connected to the inlet pipe (11), and the outlet of the drain pipe (15) is connected to the siphon (1413) to draw the accumulated water in the inlet pipe (11) into the drainage pipe (13).

2. The water system according to claim 1, characterized in that, The drainage pump (14) includes a housing (141), a motor (142), and an impeller (143). An internal flow channel is formed inside the housing (141). The inlet (1411), outlet (1412), and siphon (1413) of the drainage pump are all located on the housing (141) and communicate with the internal flow channel. The siphon (1413) is located at the smallest inner diameter of the internal flow channel. The impeller (143) is installed at the outlet (1412) of the drainage pump and is driven by the motor (142).

3. The water system according to claim 2, characterized in that, A throat section (1414) is provided within the internal flow channel. The throat section (1414) is located between the inlet (1411) and outlet (1412) of the drainage pump, and the inner diameter of the throat section (1414) is smaller than the inner diameter of other locations within the internal flow channel. The siphon port (1413) is located on the throat section (1414); or The internal flow channel also includes an interface section (1415) extending outward from the inlet (1411) of the drainage pump. The inner diameter of the interface section (1415) is smaller than the inner diameter of other locations in the internal flow channel. The siphon port (1413) is disposed on the interface section (1415).

4. The water system according to claim 2, characterized in that, The drainage pump (14) also includes a filter element (144), and the housing (141) is also provided with an installation port (1416) communicating with the internal flow channel. The filter element (144) is installed in the internal flow channel through the installation port (1416).

5. The water system according to claim 1, characterized in that, The water system also includes a dispensing component, which is connected to the water inlet pipe (11).

6. The water system according to claim 5, characterized in that, The dispensing assembly includes a liquid storage box (161) and a liquid extraction pipe (162). The inlet of the liquid extraction pipe (162) is connected to the liquid storage box (161), and the outlet of the liquid extraction pipe (162) is connected to the water inlet pipe (11).

7. The water system according to claim 6, characterized in that, The dispensing assembly also includes a suction pump (163), the inlet of which is connected to the storage box (161), and the outlet of which is connected to the pumping pipeline (162).

8. The water system according to claim 1, characterized in that, The water system further includes a connecting hose (17), the inlet of which is connected to the roller assembly (2), and the outlet of which is connected to the inlet (1411) of the drain pump; and / or The inlet of the drain pipe (15) is connected to the lowest point of the inlet pipe (11), and the inlet of the drain pipe (15) is higher than the outlet of the drain pipe (15); and / or The middle section of the drain pipe (15) is raised to a certain height to prevent wastewater in the drain pipe (13) from flowing back into the inlet pipe (11) through the drain pipe (15).

9. The water system according to any one of claims 1 to 8, characterized in that, The roller assembly (2) includes an upper roller (21) and a lower roller (22). The outlet of the water inlet pipe (11) is connected to the upper roller (21) and the lower roller (22), and the inlet of the drain pipe (13) is connected to the upper roller (21) and the lower roller (22).

10. A washing machine, characterized in that, The washing machine includes the water system according to any one of claims 1 to 9.

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