Drainage device and clothes treatment equipment

Abstract

The invention relates to clothes treatment equipment, in particular to a drainage device and the clothes treatment equipment, and aims to solve the problem that residual water stored in a drainage pipe cannot be drained by an existing drainage device. In order to achieve the purpose, the drainage device comprises an electromagnetic valve, a drainage pump, a drainage pipe and a negative pressure drainer, and the electromagnetic valve is used for water inflow; the draining pump is used for draining and comprises a filter; the drainage pipe is connected with a water outlet of the drainage pump for drainage; the negative pressure drainer is correspondingly connected with the electromagnetic valve, the filter and the drainage pipe, negative pressure is formed in the negative pressure drainer through inflow water, and residual water in the drainage pump and the drainage pipe is sucked into the negative pressure drainer and drained. Under the condition that the technical scheme is adopted, residual water can be effectively drained, so that when a user cleans the filter of the draining pump, a large amount of water cannot flow out of the filter opening, the ground cannot be wetted and polluted, the user experience is improved, and due to the fact that no residual water exists, bacterium breeding is avoided.

Description

Technical Field

[0001] The invention relates to a clothing processing device, and in particular provides a drainage device and a clothing processing device. Background Art

[0002] With the advancement of science and technology, the level of automation in human life is getting higher and higher, and daily housework is gradually replaced by machines. As a commonly used household appliance in daily life, clothing processing equipment has brought great convenience to people's lives. Clothing processing equipment mainly includes washing equipment, drying equipment and washing and drying equipment. According to the washing method, washing equipment can be roughly divided into pulsator washing machines and drum washing machines.

[0003] Taking a washing machine as an example, the drainage device of an existing washing machine, whether it is a pulsator washing machine or a drum washing machine, includes a drainage pump and a drainage pipe connected thereto. The drainage pump includes a motor, a filter, an impeller and a volute. The drainage pipe is connected to the water outlet of the drainage pump.

[0004] In the existing drainage device, during the drainage process, the amount of residual water in the drain pipe is small in the later stage of the drainage process. At this time, the working state of the drainage pump is often an air-water mixed state, which affects the performance of the drainage pump and makes it impossible to discharge the residual water from the drain pipe. When the user cleans the filter of the drainage pump, a large amount of water will flow out of the filter port of the drainage pump, causing wetting and pollution of the ground. At the same time, the residual water remains in the drainage pipe for a long time, which is easy to breed bacteria. Summary of the invention

[0005] The present invention aims to solve the above technical problem, that is, to solve the problem that the existing drainage device cannot drain the residual water stored in the drainage pipe.

[0006] In a first aspect, the present invention provides a drainage device, comprising:

[0007] A solenoid valve for water inlet;

[0008] A drainage pump for draining water, including a filter;

[0009] a drain pipe connected to the water outlet of the drain pump for draining water; and

[0010] The negative pressure drainer is constructed to be connected to the solenoid valve, the filter and the drain pipe accordingly, and forms negative pressure in the negative pressure drainer through water intake, so that the residual water in the drain pump and the drain pipe is sucked into the negative pressure drainer and discharged.

[0011] In the preferred technical solution of the above drainage device, the negative pressure drainer is tubular as a whole, and the negative pressure drainer comprises:

[0012] A water inlet portion, comprising a coaxial water inlet straight pipe section and a sudden contraction section, wherein the water inlet straight pipe section is connected to the solenoid valve;

[0013] a water outlet portion, comprising a coaxial gradually expanding section and a water outlet straight pipe section, a throat section being connected between the gradually expanding section and the suddenly contracting section, and the water outlet straight pipe section being connected to the drain pipe; and

[0014] The water suction part is communicated with the throat section, and the water suction part is connected with the filter.

[0015] In a preferred technical solution of the above drainage device, the axis where the water outlet is located intersects with the axis where the water absorption part is located, and the angle formed by them is an obtuse angle.

[0016] In the preferred technical solution of the above drainage device, the angle formed by the axis of the water outlet and the axis of the water absorption part is 155°-168°.

[0017] In a preferred technical solution of the above drainage device, the axis where the water inlet portion is located intersects with the axis where the water absorption portion is located, and the angle formed is an acute angle.

[0018] In a preferred technical solution of the above drainage device, the angle formed by the axis of the water inlet portion and the axis of the water absorption portion is 40°-65°.

[0019] In the preferred technical solution of the above drainage device, a corresponding non-return structure is provided between the drainage pump and the drainage pipe.

[0020] In the preferred technical solution of the above-mentioned drainage device, a corresponding non-return structure is provided between the solenoid valve and the negative pressure drainer.

[0021] In the preferred technical solution of the above-mentioned drainage device, a corresponding anti-return structure is provided between the negative pressure drainer and the drainage pipe.

[0022] In a second aspect, the present invention further provides a clothes processing device including an inner drum, an outer drum and the above-mentioned drainage device.

[0023] When the above-mentioned technical scheme is adopted, the drainage device and the negative pressure drainer of the clothing processing equipment of the present invention are constructed to be correspondingly connected with the solenoid valve, the filter and the drain pipe, and are constructed to form negative pressure in the negative pressure drainer by taking in water, so that the residual water in the drain pump and the drain pipe is sucked into the negative pressure drainer and discharged. Therefore, the present invention can effectively discharge the residual water, so that when the user cleans the filter of the drain pump, a large amount of water will not flow out from the filter port of the drain pump, and the ground will not be wetted and polluted, thereby improving the user experience. Since there is no residual water, the breeding of bacteria is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0025] Figure 1 is a schematic structural diagram of a drainage device according to an embodiment of the present invention at a certain angle;

[0026] Figure 2 is a schematic structural diagram of a drainage device according to an embodiment of the present invention from another angle;

[0027] Figure 3 is a schematic structural diagram of a negative pressure drainer and a first pipe member assembled together according to an embodiment of the present invention;

[0028] Figure 4 yes Figure 3 A schematic main cross-sectional view of the negative pressure drainer and the first pipe member shown;

[0029] Figure 5 is a schematic main cross-sectional view of a negative pressure drainer according to an embodiment of the present invention;

[0030] Figure 6 is a schematic structural diagram of a drainage device according to an embodiment of the present invention from another angle;

[0031] Figure 7 It is a schematic partial cross-sectional view of a drainage pump, a drainage pipe and a third connecting pipe according to an embodiment of the present invention.

[0032] The symbols in the figure mean the following:

[0033] 100 drainage devices,

[0034] 10 solenoid valves,

[0035] 20 drainage pumps,

[0036] 21 filters,

[0037] 30 drain pipes,

[0038] 31 first pipe section, 32 tee pipe fitting, 33 second pipe section,

[0039] 40 negative pressure drainer,

[0040] 41 water inlet, 411 water inlet straight pipe section, 412 sudden contraction section, 42 water outlet, 421 gradual expansion section, 422 water outlet straight pipe section, 43 throat section, 44 water suction section,

[0041] ɑ is the first angle, β is the second angle,

[0042] 50 pipelines,

[0043] 51 first connecting pipe, 52 second connecting pipe, 53 third connecting pipe, 54 first pipe fitting,

[0044] 60 anti-return structure. DETAILED DESCRIPTION

[0045] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0046] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0047] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] Figure 1 is a schematic structural diagram of a drainage device according to an embodiment of the present invention at a certain angle. Figure 1 The figure shows the connection relationship between the solenoid valve, the first connecting pipe, and the negative pressure drainer, and also shows the connection relationship between the drain pump and the drain pipe. Figure 2 is a schematic structural diagram of a drainage device according to an embodiment of the present invention from another angle. Figure 2 The diagram shows the connection relationship between the solenoid valve, the first connecting pipe, the first pipe fitting and the negative pressure drainer, the connection relationship between the negative pressure drainer and the second connecting pipe, and the connection relationship between the negative pressure drainer, the third connecting pipe and the filter. Figure 3 is a schematic structural diagram of a negative pressure drainer and a first pipe member when assembled together according to an embodiment of the present invention. Figure 3 Appearance diagram of the negative pressure drainer when assembled with the first pipe fitting. Figure 4 yes Figure 3 A schematic main cross-sectional view of the negative pressure drainer and the first pipe member shown in FIG. Figure 4 The internal connection relationship between the negative pressure drainer and the first pipe is shown. Figure 5 is a schematic main cross-sectional view of a negative pressure drainer according to an embodiment of the present invention, Figure 5 The internal structure of the negative pressure drainer is shown. Figure 6 is a schematic structural diagram of a drainage device according to an embodiment of the present invention from another angle. Figure 6 The diagram shows the connection relationship between the solenoid valve, the first connecting pipe, the first pipe fitting and the negative pressure drainer, the connection relationship between the negative pressure drainer, the second connecting pipe and the drain pipe, and the connection relationship between the negative pressure drainer, the third connecting pipe and the filter. Figure 7 It is a schematic partial cross-sectional view of a drainage pump, a drainage pipe and a third connecting pipe according to an embodiment of the present invention.

[0049] like Figure 1 See also Figure 2-Figure 7 , in order to solve the problem that the existing drainage device 100 cannot drain the residual water stored in the drain pipe 30. The present invention provides a drainage device 100, which can generally include a solenoid valve 10, a drain pump 20, a drain pipe 30 and a negative pressure drainer 40. Among them, the solenoid valve 10 is used for water intake. The drain pump 20 is used for drainage, and the drain pump 20 includes a filter 21. The drain pipe 30 is connected to the water outlet of the drain pump 20 for drainage. The negative pressure drainer 40 is configured to be connected to the solenoid valve 10, the filter 21 and the drain pipe 30 correspondingly, and a negative pressure is formed in the negative pressure drainer 40 by water intake, and the residual water in the drain pump 20 and the drain pipe 30 is sucked into the negative pressure drainer 40 and discharged.

[0050] When the above technical solution is adopted, the negative pressure drainer 40 of the present invention forms a negative pressure in the negative pressure drainer 40 by the incoming water, and then sucks the residual water in the drain pump 20 and the drain pipe 30 into the negative pressure drainer 40 through the negative pressure, and the residual water is discharged from the negative pressure drainer 40 to the drain pipe 30 together with the incoming water. Therefore, the present invention can effectively discharge the residual water, so that when the user cleans the filter 21 of the drain pump 20, a large amount of water will not flow out from the water outlet of the filter 21, and the ground will not be wetted and polluted, thereby improving the user experience. Since there is no residual water, the breeding of bacteria is avoided.

[0051] As a possible implementation, Figure 5 As shown, the negative pressure drainer 40 is tubular as a whole, and includes a water inlet 41, a water outlet 42, a throat section 43 and a water suction section 44. The water inlet 41 includes a coaxial water inlet straight pipe section 411 and a sudden contraction section 412, and the water inlet straight pipe section 411 is connected to the solenoid valve 10. The water outlet 42 includes a coaxial gradually expanding section 421 and a water outlet straight pipe section 422. The throat section 43 is connected between the gradually expanding section 421 and the sudden contraction section 412, and the water outlet straight pipe section 422 is connected to the drain pipe 30. The water suction section 44 is connected to the throat section 43, and the water suction section 44 is connected to the filter 21. The negative pressure drainer 40 actually constitutes a venturi tube structure.

[0052] When implementing it, Figure 2 See also Figure 3 , Figure 4 , Figure 6 and Figure 7 The negative pressure drainer 40 is connected to the electromagnetic valve 10, the drain pump 20, and the drain pipe 30 through the pipeline 50. The pipeline 50 includes a first connecting pipe 51, a first pipe 54 (see Figure 3 ), the second connecting pipe 52 and the third connecting pipe 53. The water inlet end of the water inlet straight pipe section 411 is connected to the solenoid valve 10 through the first pipe 54 and the first connecting pipe 51. Figure 3 As shown, the water inlet end of the water inlet straight pipe section 411 is connected to the first pipe member 54 through a threaded connection, the water inlet end of the water inlet straight pipe section 411 is provided with an external thread, and the end of the first pipe member 54 is provided with an internal thread matching the external thread. Figure 2 See also Figure 7 The outlet end of the outlet straight pipe section 422 is connected to the three-way pipe fitting 32 of the drain pipe 30 through the third connecting pipe 53. The general drainage pump 20 is composed of a motor, a filter 21, an impeller and a volute. The volute is divided into two chambers, which form an impeller chamber with the impeller and a filter chamber with the filter 21. Figure 2 See also Figure 6 The water absorption part 44 is connected to the chamber of the filter 21 through the second connecting pipe 52. Figure 6 As shown, a horizontal water outlet is provided at the lowest point of the bottom of the filter chamber, which is tangent to the bottom of the filter chamber, so that the residual water in the drain pipe 30 and the drain pump 20 can be smoothly sucked out from this water outlet.

[0053] like Figure 6 As shown, after the residual water discharge program is started, the solenoid valve 10 is activated to start water intake, and the water enters the water inlet end of the water inlet straight pipe section 411 of the negative pressure drain 40 through the first connecting pipe 51 and the first pipe fitting 54. According to the Venturi effect, when the water passes through the sudden contraction section 412, due to the change in cross-sectional area, the flow rate of the water in the negative pressure drain 40 suddenly increases, and a large negative pressure will be formed in the throat section 43. At the same time, the water in the filter 21 of the drainage pump 20 connected to the water suction section 44 of the negative pressure drain 40 is in an environment of atmospheric pressure, that is, the residual water in the drainage pump 20 and the drainage pipe 30 is in an environment of atmospheric pressure, which forms a pressure difference with the negative pressure of the throat section 43 of the negative pressure drain 40, so that the residual water is sucked into the water suction section 44 of the negative pressure drain 40 through the second connecting pipe 52, and discharged from the water outlet end of the water outlet straight pipe section 422 of the negative pressure drain 40 together with the inlet water. A gradually expanding section 421 is provided at the rear of the throat section 43. The throat section 43 is thinner and its diameter gradually increases, so that the overall pipeline 50 resistance of the negative pressure drainer 40 is smaller, the water absorption capacity of the negative pressure drainer 40 is enhanced, and the residual water is discharged as quickly as possible.

[0054] The inventor discovered in the process of realizing the present invention that the water inlet 41 and the water outlet 42 of a general venturi tube structure are designed to be coaxial, and the water suction part 44 is perpendicular to both the water inlet 41 and the water outlet 42. In actual use, due to the vertical water inflow of the water suction part 44, a vortex starting from the throat section 43 will appear in the gradually expanding section 421. While the vortex affects the water absorption efficiency of the venturi tube, foreign matter such as wire scraps, gravel, etc. in the residual water is easily accumulated in the throat section 43 due to the influence of the vortex, causing the venturi tube to be blocked and fail.

[0055] Based on this, in order to solve the above technical problems, as a possible implementation method, Figure 5 As shown, the axis of the water outlet 42 intersects with the axis of the water absorption part 44 and the first angle ɑ formed is an obtuse angle.

[0056] As a possible implementation, Figure 5 As shown, further, the angle of the first angle ɑ formed by the axis of the water outlet portion 42 and the axis of the water absorption portion 44 is 155°-168°.

[0057] In a specific implementation, the first angle ɑ formed by the axis of the water outlet 42 and the axis of the water absorption part 44 can be 155°, 156°, 157°, 158°, 159°, 160°, 161°, 162°, 163°, 164°, 165°, 167° or 168°. The first angle ɑ is preferably 155°, 160° or 165°.

[0058] The axis of the water outlet 42 intersects with the axis of the water absorption part 44 and forms a first angle ɑ which is an obtuse angle. The angle of the first angle ɑ formed by the axis of the water outlet 42 and the axis of the water absorption part 44 is 155°-168°. Through the above structural design, the interference of the water flow of the water absorption part 44 on the main water flow can be reduced, so that the starting section of the vortex is moved backward, and the thickness of the vortex is reduced. The ratio of the vortex to the thickness of the flow channel is reduced from 1 / 3 to 1 / 5, reducing the possibility of foreign matter deposition blocking the Venturi tube. At the same time, due to the reduction of the vortex, the internal pipeline resistance of the Venturi tube is reduced, which can further improve the water absorption efficiency of the Venturi tube.

[0059] The inventor discovered during the process of implementing the present invention that after the design of the structure of the general venturi tube is finalized, the water flow rate of the water inlet end of the venturi tube is also determined accordingly. If the actual water flow rate is greater than the designed water flow rate, it is easy to cause water to be sprayed out of the water suction part 44 instead of absorbing water. This is a common phenomenon in the actual application of the venturi tube. Considering the versatility, it is generally hoped to increase the allowable water flow rate range of the water inlet end of the venturi tube.

[0060] Based on this, in order to solve the above technical problems, as a possible implementation method, Figure 5As shown, the axis of the water inlet portion 41 intersects with the axis of the water absorption portion 44 and the second angle β formed is an acute angle.

[0061] As a possible implementation, Figure 5 As shown, further, the angle of the second angle β formed by the axis of the water inlet portion 41 and the axis of the water absorption portion 44 is 40°-65°.

[0062] In a specific implementation, the angle of the second angle β formed by the axis of the water inlet 41 and the axis of the water absorption part 44 can be 40°, 41°, 42°, 43°, 44°, 45°, 46°, 47°, 48°, 49°, 50°, 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59°, 60°, 61°, 62°, 63°, 64° or 65°. Preferably, the angle of the second angle β is 45°, 50°, 55°, 60° or 65°.

[0063] In order to prevent water from being sprayed out of the water absorption part 44 under high flow, the axis of the water inlet part 41 intersects with the axis of the water absorption part 44 and the second angle β formed is an acute angle. The angle of the second angle β formed by the axis of the water inlet part 41 and the axis of the water absorption part 44 is 40°-65°. At this time, due to the inertia of the fluid, the water flow of the water inlet part 41 of the negative pressure drainer 40 is more likely to flow to the water outlet 42, rather than turning sharply to the water absorption section.

[0064] The inventors discovered during the process of implementing the present invention that the drain pipe is generally in a suspended state, and since there is no effective non-return structure between the drain pump and the drain pipe, after the drain pump stops working, the water in the drain pipe will fall back into the drain pipe and the drain pump, causing residual water accumulation.

[0065] Based on this, in order to solve the problem of residual water backflow, as a possible implementation method, Figure 4As shown, a corresponding check structure 60 is provided between the solenoid valve 10 and the negative pressure drainer 40. Further, the corresponding check structure 60 between the solenoid valve 10 and the negative pressure drainer 40 is specifically arranged in the first pipe 54. The corresponding check structure 60 can be a one-way valve or a check valve plate. Furthermore, the corresponding check structure 60 can also be a structure composed of a small ball and a spring, and the small ball is arranged at the end of the first pipe 54 that is not connected to the negative pressure drainer 40, and the spring presses against the small ball and the water inlet end of the negative pressure drainer 40. During operation, the spring is compressed by the push of the water flow, and the small ball is pushed to the middle section of the first pipe 54, so that water can smoothly enter the negative pressure drainer 40. When the machine stops working, the ball and the spring return to their original positions, blocking the water inlet end of the first pipe 54, preventing the water in the first connecting pipe 51 from entering the negative pressure drainer 40, while also blocking the path of the water in the negative pressure drainer 40 and the rear end from entering the first connecting pipe 51, preventing the clean water source in the first connecting pipe 51, the solenoid valve 10 and the front-end pipe network from being contaminated by dirty water from the clothing processing equipment.

[0066] As a possible implementation, Figure 4 As shown, a corresponding non-return structure 60 is provided between the negative pressure drain 40 and the drain pipe 30. Furthermore, the corresponding non-return structure 60 between the negative pressure drain 40 and the drain pipe 30 is specifically arranged in the water outlet end of the water outlet straight pipe section 422 of the negative pressure drain 40. The corresponding non-return structure 60 can be a one-way valve or a non-return valve plate. The non-return structure 60 at the water outlet end, i.e., the non-return valve plate, is flushed open by the water flow during operation, and the water flow can be discharged smoothly. When the operation stops, the valve plate of the non-return valve plate returns to its original position, so that the water at the rear of the outlet end cannot flow back into the negative pressure drain 40.

[0067] As a possible implementation, Figure 5As shown, a corresponding non-return structure 60 is provided between the drain pump 20 and the drain pipe 30. In specific implementation, the drain pipe 30 includes a first pipe section 31, a three-way pipe fitting 32 and a second pipe section 33. The first pipe section 31 is connected to the water outlet of the drain pump 20, and the three-way pipe fitting 32 is connected between the first pipe section 31 and the second pipe section 33. The corresponding non-return structure 60 between the drain pump 20 and the drain pipe 30 is specifically arranged in the first pipe section 31. The corresponding non-return structure 60 can be a one-way valve or a non-return valve plate. Furthermore, the corresponding non-return structure 60 can also be a structure composed of a small ball and a spring. The small ball is arranged in the first pipe section 31, and the spring is pressed between the small ball and the three-way pipe fitting 32. When the drain pump 20 is working normally, it is pushed by the water flow, the spring is compressed, the small ball is pushed to the middle position of the first pipe section 31, and the water can be discharged smoothly from the drain pump 20. When the drain pump 20 stops working, the ball is pressed by the spring at the outlet of the drain pump 20, so that the water discharged by the drain pump 20 cannot flow back into the drain pump 20 and the drain pipe 30. When the residual water discharge program is started, the ball is also at the outlet of the drain pump 20, preventing the water discharged by the negative pressure drain 40 from returning to the drain pump 20 and the drain pipe.

[0068] like Figure 1 See also Figure 2-Figure 7 , in order to solve the problem that the existing drainage device 100 cannot drain the residual water stored in the drain pipe. The present invention also provides a clothing processing device including an inner drum, an outer drum and a drainage device 100, and the drainage device 100 can generally include a solenoid valve 10, a drainage pump 20, a drainage pipe and a negative pressure drainer 40. The solenoid valve 10 is used for water intake. The drainage pump 20 is used for drainage, and the drainage pump 20 includes a filter 21. The drainage pipe is connected to the water outlet of the drainage pump 20 for drainage. The negative pressure drainer 40 is configured to be connected to the solenoid valve 10, the filter 21 and the drainage pipe, and a negative pressure is formed in the negative pressure drainer 40 by water intake, and the residual water in the drainage pump 20 and the drainage pipe is sucked into the negative pressure drainer 40 and discharged.

[0069] When the above-mentioned technical scheme is adopted, the negative pressure drainer 40 of the clothing processing equipment of the present invention is constructed to be correspondingly connected with the solenoid valve 10, the filter 21 and the drain pipe, and is constructed to form a negative pressure in the negative pressure drainer 40 by taking in water, so that the residual water in the drain pump 20 and the drain pipe 30 is sucked into the negative pressure drainer 40 and discharged. Therefore, the present invention can effectively discharge the residual water, so that when the user cleans the filter 21 of the drain pump 20, a large amount of water will not flow out from the water outlet of the filter 21, and unnecessary wetting and pollution of the ground will not be caused, thereby improving the user experience. Since there is no residual water, the breeding of bacteria is avoided.

[0070] As a possible implementation, Figure 5As shown, the negative pressure drainer 40 is tubular as a whole, and includes a water inlet 41, a water outlet 42, a throat section 43 and a water suction section 44. The water inlet 41 includes a coaxial water inlet straight pipe section 411 and a sudden contraction section 412, and the water inlet straight pipe section 411 is connected to the solenoid valve 10. The water outlet 42 includes a coaxial gradually expanding section 421 and a water outlet straight pipe section 422. The throat section 43 is connected between the gradually expanding section 421 and the sudden contraction section 412, and the water outlet straight pipe section 422 is connected to the drain pipe 30. The water suction section 44 is connected to the throat section 43, and the water suction section 44 is connected to the filter 21. The negative pressure drainer 40 actually constitutes a venturi tube structure.

[0071] As a possible implementation, Figure 5 As shown, the axis of the water outlet 42 intersects with the axis of the water absorption part 44 and the first angle ɑ formed is an obtuse angle.

[0072] As a possible implementation, Figure 5 As shown, further, the angle of the first angle ɑ formed by the axis of the water outlet portion 42 and the axis of the water absorption portion 44 is 155°-168°.

[0073] As a possible implementation, Figure 5 As shown, the axis of the water inlet portion 41 intersects with the axis of the water absorption portion 44 and the second angle β formed is an acute angle.

[0074] As a possible implementation, Figure 5 As shown, further, the angle of the second angle β formed by the axis of the water inlet portion 41 and the axis of the water absorption portion 44 is 40°-65°.

[0075] As a possible implementation, Figure 4 As shown, a corresponding non-return structure 60 is provided between the solenoid valve 10 and the negative pressure drainer 40 .

[0076] As a possible implementation, Figure 4 As shown, a corresponding anti-return structure 60 is provided between the negative pressure drainer 40 and the drain pipe 30 .

[0077] As a possible implementation, Figure 5 As shown, a corresponding anti-return structure 60 is provided between the drainage pump 20 and the drainage pipe 30 .

[0078] In specific implementation, the clothes processing device may adopt the first residual water program start logic:

[0079] When general clothing processing equipment such as washing machines detect that the drain pump 20 is working abnormally, they will directly alarm and stop working. This is to prevent a large amount of residual water from flowing out when the user inspects and cleans the drain pump 20. When the clothing processing equipment detects that the drain pump 20 is working abnormally, stop the drain pump 20 → detect whether the water in the drain pipe 30 is greater than the first preset water level. If not, display an alarm message. If so → Start the residual water drainage program, the solenoid valve 10 in the residual drainage device starts, and runs the set program. → Repeat the detection of whether the water level in the drain pipe 30 is greater than the first preset water level and execute the residual water drainage program start judgment. Until the water level is less than or equal to the first preset water level. → Display an alarm message to prompt the user to inspect and clean the drain pump 20.

[0080] In specific implementation, the clothes processing device may also adopt the second residual water drain program start logic:

[0081] The user can also choose the degree of residual water drainage. The drum cleaning and residual water drainage programs are set under the self-cleaning program in the control panel, and the user can choose to start the program.

[0083] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle 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 these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A drainage device, characterized in that: The corresponding (100) includes: A solenoid valve (10) for water inlet; A drainage pump (20) for draining water, comprising a filter (21); a drainage pipe (30), connected to the water outlet of the drainage pump (20) for drainage; and The negative pressure drainer (40) is configured to be connected to the electromagnetic valve (10), the filter (21) and the drain pipe (30) accordingly, and to form a negative pressure in the negative pressure drainer (40) by inflowing water, so that the residual water in the drain pump (20) and the drain pipe (30) is sucked into the negative pressure drainer (40) and discharged.

2. The drainage device according to claim 1, characterized in that: The negative pressure drainer (40) is tubular in shape as a whole, and comprises: A water inlet portion (41), comprising a coaxial water inlet straight pipe section (411) and a contraction section (412), wherein the water inlet straight pipe section (411) is connected to the solenoid valve (10); a water outlet portion (42), comprising a coaxial gradually expanding section (421) and a water outlet straight pipe section (422), a throat section (43) being connected between the gradually expanding section (421) and the suddenly contracting section (412), and the water outlet straight pipe section (422) being connected to the drainage pipe (30); and A water absorption part (44) is connected to the throat section (43), and the water absorption part (44) is connected to the filter (21).

3. The drainage device according to claim 2, characterized in that: The axis of the water outlet portion (42) intersects with the axis of the water absorption portion (44), and the angle formed is an obtuse angle.

4. The drainage device according to claim 3, characterized in that: The angle formed by the axis of the water outlet portion (42) and the axis of the water absorption portion (44) is 155°-168°.

5. The drainage device according to claim 2, characterized in that: The axis of the water inlet portion (41) intersects with the axis of the water absorption portion (44), and the angle formed is an acute angle.

6. The drainage device according to claim 5, characterized in that: The angle formed by the axis of the water inlet portion (41) and the axis of the water absorption portion (44) is 40°-65°.

7. The drainage device according to claim 1, characterized in that: A corresponding non-return structure (60) is provided between the drainage pump (20) and the drainage pipe (30).

8. The drainage device according to claim 1, characterized in that: A corresponding non-return structure (60) is provided between the solenoid valve (10) and the negative pressure drainer (40).

9. The drainage device according to any one of claims 1 to 8, characterized in that: A corresponding non-return structure (60) is provided between the negative pressure drainer (40) and the drain pipe (30).

10. A clothes processing device, characterized in that: The clothes treating device comprises an inner drum, an outer drum and a corresponding drainage device (100) according to any one of claims 1 to 9.

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