A washing apparatus and a water level detecting method thereof

Abstract

The application discloses a kind of washing equipment and its water level detection method, including for containing washing water's barrel body and from the bottom of barrel body to the top of barrel body extension setting and with the communication of barrel body's suspended pipeline, further include: the measuring resistance of being arranged in the suspended pipeline along the extension direction of suspended pipeline and the float of being floatable, for with the contact of measuring resistance forms energized circuit.The resistance value of measuring resistance in access circuit can be calculated by monitoring the current value in circuit, the length of measuring resistance in access circuit can be determined according to the resistance value of access circuit, and the height of float, i.e.water level height, is determined, so as to realize the accurate monitoring of water quantity in washing equipment, because suspended pipeline and barrel body are communicated, so suspended pipeline can reflect the water level in barrel body in real time, the resistance value of measuring resistance can change continuously, so the water level change value obtained is also continuous, and the monitoring of water level is more accurate.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of household appliances, and particularly relates to a washing device and a water level detection method thereof. BACKGROUND

[0002] Current washing devices generally set multiple water level gears according to the amount of laundry, laundry tasks, etc. For example, the amount of laundry is different, and the corresponding washing water amount is different; the water amount corresponding to rinsing and soaking, large and small items, etc. may also be different. At the same time, as the functions of washing devices become more and more, the accuracy of water amount control is also increasingly required. For example, if the preset water amount for a washing task is 2L, but the actual water amount is only 1.8L, it may cause some laundry to be difficult to soak, the washing to be not clean, or the washing agent in the rinsing stage to be not completely rinsed. If the actual water amount exceeds 2L, water will be wasted.

[0003] However, when the washing device is filling water, the control of the water filling amount can only be compared with the preset water filling amount by detecting the water filling amount to determine whether the water filling is completed, and the rated amount of water cannot be directly controlled. Therefore, accurate detection of the water amount filled becomes a prerequisite for accurate control of the actual water filling amount.

[0004] Traditional washing devices generally judge the water amount filled by installing a flow sensor or other structure that can monitor the flow in the water inlet valve or other part of the water inlet pipeline, but this method has obvious disadvantages. The water pressure of pipelines in different regions is different, and even the water pressure in the same region will change at any time, for example, the opening and closing of other water outlets in the same water supply pipeline will eventually cause the flow rate of the water inlet to change. Therefore, components such as flow sensors often cannot accurately detect the actual water filling amount. Even if the flow sensor is improved to have a certain improvement in detection accuracy, the volume, water absorption rate, etc. of different laundry in the washing device will still affect the final washing effect. Therefore, a large number of washing devices detect the actual water level in the washing device to determine the water filling amount.

[0005] A washing machine water level detection device is disclosed in Chinese Patent No. CN202221382532.2, which sets a water level detection circuit in the washing machine. A plurality of electric resistance blocks are linearly and spaced apart from top to bottom on the side wall of the inner drum of the washing machine, and the electric resistance blocks penetrate the inner drum and are insulated from the inner drum. One pole of the power supply is connected in parallel with each electric resistance block in the circuit, and the other pole is connected to the water body in the inner drum. Water is used as a conductor to connect the plurality of electric resistances. By monitoring the current in the circuit and calculating the electric resistances connected in the circuit, the height of the corresponding electric resistance reached by the water level can be determined.

[0006] However, this method needs to set several resistances insulated from the inner barrel, and the resistances and wires need to be immersed in the water body and insulated from the water body, which is easy to cause detection failure due to insulation failure in actual use. Moreover, the measured resistance value is not continuous but several points, that is, the water level height cannot be accurately reflected, and only the gradient change of the water level can be reflected, so that the detection is inaccurate. If the detection accuracy is to be improved, the number of measurement resistances needs to be increased, so that the circuit becomes more complex and the maintainability of the circuit is affected.

[0007] Therefore, the present application is proposed. SUMMARY

[0008] The present application provides a washing equipment and a water level detection method thereof, which aims to accurately detect the water level height in the washing equipment by using a simple circuit.

[0009] To solve the above technical problems, the basic idea of the technical solution of the present application is as follows:

[0010] A washing equipment comprises a barrel for containing washing water, a suspension pipeline extending from the bottom of the barrel to the top of the barrel and being in communication with the barrel, and further comprises:

[0011] A measurement resistance is arranged in the suspension pipeline along the extension direction of the suspension pipeline;

[0012] A floating block is arranged inside the suspension pipeline and is used to contact the measurement resistance to form a power supply circuit.

[0013] Further, the measurement resistance is a resistance wire arranged from one end of the suspension pipeline to the other end, and the floating block is slidably connected with the resistance wire.

[0014] Further, the floating block comprises a floating block that can float and a conductive sheet arranged above the floating block, and the conductive sheet is slidably connected with the resistance wire.

[0015] Further, the conductive sheet comprises a mounting sheet for connecting with the floating block and a contact structure arranged at one end of the mounting sheet and connected with the mounting sheet, and the contact structure is slidably connected with the measurement resistance.

[0016] Further, the contact structure is an arc-shaped semicircle structure, and the arc-shaped semicircle structure is clamped on the measurement resistance.

[0017] Further, the conductive sheet further comprises an elastic structure arranged at one end of the mounting sheet and connecting the mounting sheet with the contact structure.

[0018] Preferably, the elastic structure is an inverted "V" type structure comprising a first end and a second end, the first end of the inverted "V" type structure is connected with the mounting sheet, and the second end is connected with the contact structure.

[0019] Further, the bottom of the suspension pipeline is communicated with the barrel body, and the top of the suspension pipeline is open.

[0020] Further, the bottom of the suspension pipeline is provided with a water inlet for communicating with the barrel body, and a one-way valve is arranged on the water inlet.

[0021] A water level detection method of the washing equipment, the float, the measuring resistor above the float and the power supply can form a communication loop, the resistance value R1 of the measuring resistor in the access circuit is obtained, the water level value H is calculated by substituting the obtained resistance value R1 into a preset formula, and the preset formula is: H=[1-R1 / R 总 ]*L, wherein R 总 is the maximum resistance value of the measuring resistor, and L is the total length of the measuring resistor.

[0022] The float, the measuring resistor above the float and the power supply can form a communication loop, the resistance value R1 of the measuring resistor in the access circuit is obtained, the water level value H is calculated by substituting the obtained resistance value R1 into a preset formula, and the preset formula is: H=R1 / R 总 *L, wherein R 总 is the maximum resistance value of the measuring resistor, and L is the total length of the measuring resistor.

[0023] Further, the washing equipment further comprises a protection resistor connected in series with the measuring resistor, the resistance value R1' of the access circuit is obtained, and the resistance value R1 of the measuring resistor in the access circuit is R1'=R0, wherein R0 is the resistance value of the protection resistor.

[0024] After the above technical scheme is adopted, the present application has the following beneficial effects compared with the prior art.

[0025] 1. The measuring resistor and the float forming a loop with the measuring resistor are arranged in the suspension pipeline, the float can float up and down in the suspension pipeline to follow the rise and fall of the water level of the washing water, the contact position with the measuring resistor is changed, and then the resistance value of the measuring resistor in the water level detection circuit is changed.

[0026] By monitoring the current value in the circuit, the resistance value in the access circuit can be calculated, the length of the measuring resistor in the access circuit can be determined according to the resistance value of the access circuit, and then the height of the float, i.e. the water level height, is determined, so as to realize the accurate monitoring of the water quantity in the washing equipment. Because the suspension pipeline and the barrel body are communicated, the suspension pipeline can reflect the water level in the barrel body in real time, and the water level obtained by the structure is real-time.

[0027] The water level change value obtained by monitoring the water level change by continuously sliding the float on the measuring resistance is continuously changed, so it can reflect the continuous change process of the water level, and the monitoring of the water level is more accurate.

[0028] 2. The float is composed of a suspension block and a conductive sheet, and the conductive sheet and the resistance wire are slidingly connected, which can ensure that the float can stably contact the resistance wire when floating up and down, so that the resistance of other parts in the power circuit except the measuring resistance is stable and unchanged; the suspension block has low density, which can provide sufficient buoyancy for the conductive sheet below, and can also avoid the conductive sheet being submerged in the washing water all the time, thereby slowing down the corrosion of the conductive sheet.

[0029] 3. The contact structure is arranged as an arc-shaped semicircle structure which can be clamped on the resistance wire, so as to increase the contact area of the contact structure and the measuring resistance as much as possible, and at the same time, the contact structure and the measuring resistance will not be stuck due to thermal expansion and contraction, which is beneficial to maintain stable contact of the contact structure and reduce the occurrence of heating or disconnection of the contact structure. The arc-shaped semicircle structure itself can produce a certain clamping effect on the resistance wire, so that even if the elastic connection structure between the mounting sheet and the contact structure fails, the connection can still be stable and continuous.

[0030] 4. The conductive sheet needs to maintain stable connection with the measuring resistance when sliding upward with the suspension block, so as to ensure that the water level detection circuit maintains the passage. If the contact is poor, the resistance value of the contact point will increase instantaneously, which will affect the calculation of the actual water level. Therefore, the conductive sheet needs to maintain a certain pressure with the measuring resistance to maintain stable contact.

[0031] During the drainage stage, the water level decreases, and the float needs to be reset by its own gravity. If the pressure between the conductive sheet and the measuring resistance is too large, it will cause a large friction between them, affecting the reset of the float.

[0032] The elastic connection structure is arranged between the mounting sheet and the contact structure, which can make the mounting sheet tightly adhere to the suspension pipeline wall and the contact structure tightly adhere to the resistance wire, so as to ensure stable connection, and at the same time, the elastic connection structure can normally slide and reset during reset.

[0033] The elastic connection structure is arranged as an inverted "V" type elastic structure, which can ensure that the contact has a certain pressure to maintain stable connection, and because it has elasticity, it will not affect the reset of the float during the drainage stage.

[0034] 5. The top of the suspension pipeline is arranged as an open structure, which can connect the suspension pipeline with the external atmosphere, so as to prevent the formation of air pressure in the suspension pipeline when water is filled, so that the water in the barrel cannot normally enter the suspension pipeline, affecting the measurement accuracy.

[0035] 6. The one-way valve can ensure that the water in the barrel enters the suspension pipeline, but the water in the suspension pipeline cannot flow back to the barrel, avoiding the disturbance of the water level fluctuation in the barrel caused by the water flow impact on the float during the water injection stage, thereby causing the reading fluctuation, and being beneficial to the stable reading.

[0036] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0037] The accompanying drawings, which are part of the present application, serve to further understand the present application, and the illustrative embodiments of the present application and their descriptions serve to explain the present application, but do not constitute an improper limitation on the present application. Obviously, the drawings described below are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings. In the drawings:

[0038] Figure 1 is a combined assembly drawing of the washing equipment of the present application;

[0039] Figure 2 is a water level detection circuit schematic diagram of the washing equipment of the present application;

[0040] Figure 3 is Figure 2 is a local enlarged schematic view of A in FIG. 4;

[0041] Figure 4 is Figure 3 is a local enlarged schematic view of B in FIG. 4;

[0042] Figure 5 is another combined assembly drawing of the washing equipment of the present application.

[0043] In the drawings: 1, measurement resistor; 2, outer barrel; 3, inner barrel; 4, float; 41, mounting piece; 42, suspension block; 43, inverted "V" structure; 431, first end; 432, second end; 44, contact structure; 5, drain valve; 6, water inlet; 7, suspension pipeline; 8, power supply set; 81, protection resistor; 82, ammeter; 83, power supply; 9, light emitting and receiving device.

[0044] It should be noted that these drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings of the embodiments of the present application. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0046] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0047] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] The washing equipment refers to an electrical equipment for washing and cleaning clothes.

[0049] Embodiment 1:

[0050] As shown in Figure 1 , Figure 2 , the present application discloses a washing equipment, which comprises a water level detection circuit and a washing equipment body, the water level detection circuit comprises a power supply 83, an ammeter 82, a measuring resistor 1 and a conductive float 4 connected in series through wires, and the washing equipment body comprises a barrel body containing washing water.

[0051] The washing equipment further comprises a suspension pipeline 7 extending from the bottom of the barrel body to the top of the barrel body and being in communication with the barrel body, the measuring resistor 1 arranged in the suspension pipeline along the extension direction of the suspension pipeline, and the float 4 which is arranged in the suspension pipeline in a suspended manner and in sliding contact with the measuring resistor 1, the power supply 83, the ammeter 82, the measuring resistor 1 and the conductive float 4 form a loop.

[0052] The washing water in the barrel body can enter the suspension pipeline 7, so that the water level in the suspension pipeline 7 changes synchronously with the water level in the barrel body, and measuring the water level in the suspension pipeline 7 is equivalent to measuring the water level in the barrel body.

[0053] Further, the water level detection circuit further comprises a protection resistor 81 connected in series in the circuit.

[0054] The power supply 83, the ammeter 82 and the protection resistor 81 constitute a power supply group 8, which is installed on the top of the washing equipment.

[0055] The measuring resistor 1 is arranged in the suspension pipeline 7, and the float 4 forms a loop with the measuring resistor 1. The float 4 can float up and down along with the change of the washing water level in the suspension pipeline 7, changes the contact position with the measuring resistor 1, and further changes the resistance value of the measuring resistor 1 connected to the water level detection circuit.

[0056] By monitoring the current value in the circuit, the resistance value connected to the circuit can be calculated, and the length of the measuring resistor 1 connected to the circuit can be determined according to the resistance value of the circuit, and further the height of the float 4, i.e. the water level height, can be determined, so as to realize the accurate monitoring of the water amount in the washing equipment. Since the suspension pipeline 7 is communicated with the barrel, the suspension pipeline 7 can reflect the water level in the barrel in real time, and the water level obtained by the structure is real-time.

[0057] The water level change is monitored by the continuous sliding of the float 4 on the measuring resistor 1 to change the resistance, and the obtained water level change value is continuously changed, so as to reflect the continuous change process of the water level, and the monitoring of the water level is more accurate.

[0058] As an embodiment of the present embodiment, the positive / negative electrode of the power supply 83 is communicated with the float 4, and the negative / positive electrode is connected to the upper end of the measuring resistor 1 to form a power supply loop.

[0059] The part between the upper end of the measuring resistor 1 and the float 4 is connected to the circuit, the length of the part is obtained by calculating the resistance value connected to the circuit, and the water level height can be calculated.

[0060] As another embodiment of the present embodiment, the positive / negative electrode of the power supply 83 is communicated with the float 4, and the negative / positive electrode is connected to the lower end of the measuring resistor 1 to form a power supply loop.

[0061] The part between the lower end of the measuring resistor 1 and the float 4 is connected to the circuit, the length of the part is obtained by calculating the resistance value connected to the circuit, and the water level height can be calculated.

[0062] Further, the measuring resistor 1 is a resistance wire arranged from one end to the other end of the suspension pipeline 7, and the float 4 is slidably connected with the resistance wire.

[0063] The resistance wire is used as the measuring resistor 1, which saves space and is convenient for connection with the float 4.

[0064] Embodiment 2:

[0065] As shown in Figure 2 , 3 The present embodiment is a further improvement based on the embodiment 1, the float 4 comprises a conductive sheet and a suspension block 42, the conductive sheet is fixedly installed above the suspension block 42, one side of the conductive sheet is connected with a wire, and the other side is slidably connected with the measuring resistor 1.

[0066] The floating block 4 is composed of a floating block 42 and a conductive sheet, which is in sliding connection with the resistance wire, so that the floating block 4 can stably contact with the resistance wire when floating up and down, and the resistance of the circuit except the measuring resistance 1 is stable. The floating block 42 has low density, which can provide sufficient buoyancy for the conductive sheet and avoid the conductive sheet being immersed in the washing water all the time, thereby slowing down the corrosion of the conductive sheet.

[0067] As an embodiment of the present embodiment, the length of the conductive sheet is slightly greater than the distance from the measuring resistance 1 to the inner wall of the floating pipeline 7 opposite to the measuring resistance 1. The conductive sheet has a certain elasticity, and the elastic deformation occurs under the extrusion of the measuring resistance 1 and the inner wall of the floating pipeline 7, thereby forming a pressure on the measuring resistance 1 and ensuring the stable connection of the contact point 44 of the conductive sheet and the measuring resistance 1.

[0068] As another embodiment of the present embodiment, the conductive sheet includes a mounting sheet 41 connected with the floating block 42 and a contact structure 44, the contact structure 44 is in sliding connection with the measuring resistance 1, and the mounting sheet 41 is in sliding contact with the inner wall of the floating pipeline 7 opposite to the measuring resistance 1 at one end and connected with the contact structure 44 through an elastic structure at the other end. The elastic structure provides elastic force in the opposite and horizontal directions for the mounting sheet 41 and the contact structure 44.

[0069] Preferably, the elastic structure is a reverse "V" type structure 43 including a first end 431 and a second end 432, the first end 431 of the reverse "V" type structure 43 is connected with the mounting sheet 41, and the second end 432 is connected with the contact structure 44.

[0070] There is a gap between the reverse "V" type structure 43 and the measuring resistance 1 below the reverse "V" type structure 43, which can accommodate the reverse "V" type structure 43.

[0071] The conductive sheet needs to maintain stable connection with the measuring resistance 1 when sliding upward with the floating block 42, so as to ensure that the water level detection circuit maintains the passage. If the contact is poor, the resistance value of the contact point will instantaneously increase, which will affect the calculation of the actual water level. Therefore, the conductive sheet needs to maintain a certain pressure with the measuring resistance 1 to keep the contact stable.

[0072] During the drainage stage, the water level decreases, and the floating block 4 needs to reset by its own gravity. If the pressure between the conductive sheet and the measuring resistance 1 is too large, it will cause a large friction force between them, which will affect the resetting of the floating block 4.

[0073] The elastic connection structure between the mounting sheet 41 and the contact structure 44 can make the mounting sheet 41 tightly adhere to the wall of the floating pipeline 7 and the contact structure 44 tightly adhere to the resistance wire, so as to ensure stable connection, and at the same time, the elastic connection structure can normally slide and reset during the resetting.

[0074] The elastic connection structure is set as an inverted "V" elastic structure, which can ensure that the contact has a certain pressure to maintain stable connection, and because it has elasticity, it will not affect the resetting of the float 4 in the drainage stage.

[0075] As shown in Figure 3 , 4 , as an embodiment of the present embodiment, the contact structure 44 is an arc-shaped semicircular structure that can be clamped on the resistance wire.

[0076] Further, the arc-shaped semicircular structure is an arc-shaped structure that can partially wrap the resistance wire in the circumferential direction.

[0077] Preferably, the arc-shaped semicircular structure has a wrapping angle of greater than 180° in the circumferential direction of the resistance wire.

[0078] The contact structure 44 is set as an arc-shaped semicircular structure that can be clamped on the resistance wire, which can increase the contact area of the contact structure 44 and the measuring resistance 1 as much as possible, and at the same time will not cause the contact structure 44 and the measuring resistance 1 to be stuck due to thermal expansion and contraction, which is beneficial to maintain stable contact of the contact structure 44 and reduce the occurrence of heating or disconnection of the contact structure 44. The arc-shaped structure itself can produce a certain clamping effect on the resistance wire, so that even if the elastic connection structure between the mounting piece 41 and the contact structure 44 fails, the stable and continuous connection can still be maintained.

[0079] As another embodiment of the present embodiment, the contact structure 44 can be set as a conductive brush with a certain elasticity.

[0080] The conductive brush has lower requirements for the contact surface when used as a circuit connector, and can adapt to various possible contact situations.

[0081] Embodiment 3:

[0082] As shown in Figure 1 , the present embodiment is a further improvement based on embodiment 2.

[0083] The barrel body includes a fixedly arranged outer barrel 2 and a rotatable inner barrel 1, and the suspension pipeline 7 is arranged on the outer barrel 2.

[0084] The washing water in the outer barrel 2 enters the suspension pipeline 7 from the bottom, which can make the water surface stable and avoid the water flow from high place to enter the water surface in the suspension pipeline 7, causing water surface agitation and affecting measurement.

[0085] The top of the suspension pipeline 7 is set as an open top.

[0086] The top of the suspended pipe 7 is set to be open, which allows the suspended pipe 7 to be connected to the outside atmosphere. This prevents air pressure from forming inside the suspended pipe 7 when water is introduced, which would prevent the water in the bucket from entering the suspended pipe 7 normally and affect the accuracy of the measurement.

[0087] Furthermore, the suspended pipe 7 has a water inlet 6 at the bottom that is connected to the outer barrel 2.

[0088] Preferably, there is only one water inlet 6.

[0089] Furthermore, a one-way valve is provided on the water inlet 6, through which washing water can flow from the outer tub 2 into the suspended pipe 7, and the water in the suspended pipe 7 cannot flow back to the outer tub 2 from the water inlet 6.

[0090] The one-way valve ensures that water in the tank enters the suspended pipe 7, but water in the suspended pipe 7 cannot flow back into the tank. This prevents fluctuations in the water level in the tank caused by the impact of the water flow during the water filling stage from interfering with the float 4 and causing reading fluctuations, which is beneficial for reading stability.

[0091] like Figure 1 As shown, in one embodiment of this invention, the bottom of the suspended pipe 7 is provided with a drain outlet, and the drain outlet is provided with a drain valve 5. During the drainage stage, the drain valve 5 is opened, and the washing water is discharged from the drain outlet.

[0092] The washing water can be discharged into the outer tub 2 or directly discharged outside the washing equipment.

[0093] Because the inlet 6 of the suspended pipe 7 is equipped with a one-way valve, the water in the suspended pipe 7 cannot flow back into the tank to be discharged when draining. Therefore, it is necessary to open a drain outlet at the bottom of the suspended pipe 7 and install a drain valve 5 so that the water can be discharged from the drain outlet when drainage is required.

[0094] In one embodiment of this invention, the washing device includes at least a maximum water flow setting and a minimum water flow setting, with the maximum water flow setting corresponding to the highest water level and the minimum water flow setting corresponding to the lowest water level. The top of the suspended pipe 7 is higher than the highest water level, and the bottom of the suspended pipe 7 is lower than the lowest water level.

[0095] The vertical length of the measuring resistor 1 can cover the highest water level, ensuring that the measurement range is not exceeded even when the washing machine is at a high water level. Furthermore, the water level can be measured before reaching the lowest water level, guaranteeing that the water level for all preset water volume settings remains within the monitorable range.

[0096] Preferably, the length of the measuring resistor 1 is the same as the height of the outer barrel in the vertical direction.

[0097] From the beginning of the washing equipment to the end of the water injection, the whole change of the water level is in the monitoring range of the water level detection circuit.

[0098] As another embodiment of the present embodiment, the suspension pipeline 7 is provided with a plurality of water inlets 6 in the vertical direction, which are arranged in intervals and connect the suspension pipeline 7 and the barrel. The plurality of water inlets 6 can be used for the washing water to enter and exit the suspension pipeline 7, and can also be used for the air pressure in the suspension pipeline 7 to be connected with the atmosphere, so as to ensure that the water level in the suspension pipeline 7 is always synchronized with the water level in the barrel.

[0099] As shown in Figure 1 As another embodiment of the present embodiment, the washing equipment further comprises a three-way pipeline, the barrel is provided with a main drainage channel and a main drainage valve at the bottom, the main drainage channel is connected with one interface of the three-way pipeline through the main drainage valve, the drainage port is connected with another interface of the three-way pipeline through the drainage valve 5, and the third interface of the three-way pipeline is connected with a sewer pipeline, so as to drain the washing water out of the washing equipment.

[0100] Embodiment 4:

[0101] As shown in Figure 2 The present application further discloses a water level detection method of a washing equipment, the washing equipment comprises a water level detection circuit, and the water level detection circuit comprises a protection resistor 81, a resistance wire, a floating block 4 and an ammeter 82 which are connected in series through wires from the positive electrode of a power supply 83.

[0102] As an embodiment of the present embodiment, the resistance wire is arranged in the suspension pipeline 7 along the extension direction of the suspension pipeline 7, the bottom of the suspension pipeline 7 has the same height as the bottom of the barrel of the washing equipment, and the wire from the positive electrode of the power supply 83 is connected to the upper end of the measuring resistor 1 after passing through the protection resistor 81.

[0103] The voltage of the power supply 83 is V, the resistance of the measuring resistor 1 is R 总 , the resistance value of the protection resistor 81 is R0, the height of the floating block 42 above the water surface is h, the reading of the ammeter 82 is I, the water level height is H, and the resistance of the measuring resistor 1 connected to the power supply circuit is R1.

[0104] R1=V / I-R O (1)

[0105] H=[1-R1 / R 总 ]*L (2)

[0106] Substituting R1 into formula (2) can obtain:

[0107] H=[1-(V / I-R O ) / R 总 ]*L-h

[0108] Based on the preset water level-water volume correspondence, the real-time water volume value can be obtained.

[0109] In another embodiment of this invention, the resistance wire is arranged in the suspension pipe 7 along the extension direction of the suspension pipe 7. The bottom of the suspension pipe 7 is at the same height as the bottom of the washing equipment tub. The wire coming out from the positive terminal of the power supply 83 is connected to the lower end of the measuring resistor 1 after passing through the protection resistor 81.

[0110] The power supply 83 has a voltage of V, and the measuring resistor 1 has a resistance of R. 总 The length is L, the resistance value of the protective resistor 81 is R0, the height of the suspension block 42 above the water surface is h, the reading of the ammeter 82 is I, and the water level is H.

[0111] R1 = V / IR O (1)

[0112] H = [R1 / R] 总 ]*L (2)

[0113] Substituting R1 into formula (2) yields:

[0114] H = (V / IR) O ) / R 总 *Lh

[0115] Based on the preset water level-water volume correspondence, the real-time water volume value can be obtained.

[0116] In another embodiment of this invention, the resistance wire is arranged in the suspension pipe 7 along the extension direction of the suspension pipe 7. The bottom of the suspension pipe 7 is higher than the bottom of the washing equipment tub. The wire coming out from the positive terminal of the power supply 83 is connected to the upper end of the measuring resistor 1 after passing through the protection resistor 81.

[0117] The power supply 83 has a voltage of V, and the measuring resistor 1 has a resistance of R. 总 The length is L, the resistance value of the protective resistor 81 is R0, the height of the suspension block 42 above the water surface is h, the reading of the ammeter 82 is I, the height difference between the bottom of the suspension pipe 7 and the bottom of the barrel is h0, and the water level is H.

[0118] H = [1 - (V / IR)] O ) / R 总 ]*L-h+h0

[0119] Based on the preset water level-water volume correspondence, the real-time water volume value can be obtained.

[0120] As another embodiment of the present embodiment, the resistance wire is arranged in the suspension conduit 7 along the extension direction of the suspension conduit 7, the bottom of the suspension conduit 7 is higher than the bottom of the barrel of the washing apparatus, and the wire from the positive pole of the power supply 83 is connected to the lower end of the measuring resistance 1 after passing through the protection resistance 81.

[0121] The voltage of the power supply 83 is V, the resistance of the measuring resistance 1 is R 总 , the length is L, the resistance value of the protection resistance 81 is R0, the height of the suspension block 42 above the water surface is h, the reading of the ammeter 82 is I, the height difference between the bottom of the suspension conduit 7 and the bottom of the barrel is h0, and the water level height is H.

[0122] H=(V / I-R O ) / R 总 *L-h+h0

[0123] According to the preset water level height-water volume corresponding relationship, the real-time water volume value can be obtained.

[0124] Embodiment 5:

[0125] As Figure 5 shown, the present application also discloses a washing apparatus and a water level detection method thereof, the washing apparatus comprising a barrel containing washing water and a suspension conduit 7, the bottom of the suspension conduit 7 being provided with a water inlet 6 communicating the suspension conduit 7 and the barrel, the water inlet 6 being provided with a one-way valve allowing the washing water in the barrel to flow to the suspension conduit 7 in one direction, the bottom of the suspension conduit 7 being provided with a water outlet having a drain valve 5, and the top of the suspension conduit 7 being provided as an open top.

[0126] The top of the suspension conduit 7 is provided with a light emitting and receiving device 9, the light emitting device emits light to the water surface in the suspension conduit 7, and the light is received by the light receiving device after being reflected by the water surface.

[0127] The speed of light is v0, the time from light emission to reception is t, the height from the light emitting device to the bottom of the barrel is h1, and the water level height is H.

[0128] H=h1-v0*t / 2

[0129] According to the preset water level height-water volume corresponding relationship, the real-time water volume value can be obtained.

[0130] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application, and any person skilled in the art can make some changes or modifications to the above-mentioned technical content with equivalent embodiments within the scope of the technical solutions of the present application. The embodiments in the above-mentioned embodiments can be further combined or replaced, as long as they do not deviate from the technical solutions of the present application. Any simple modification, equivalent change and modification made to the above-mentioned embodiments according to the technical essence of the present application are still within the scope of the present application.

Claims

1. A washing apparatus comprising a tub for containing washing water and a suspension duct provided so as to extend from a bottom of the tub to a top of the tub and communicate with the tub, characterized in that: Also included are: A measuring resistor arranged in the suspension pipeline along the extension direction of the suspension pipeline, the measuring resistor being a resistor wire arranged from one end of the suspension pipeline to the other end; A float block arranged inside the suspension pipeline and floatable, used to form a power supply loop with the measuring resistor to detect the water level in the bucket; the float block includes a floatable suspension block and a conductive sheet arranged above the suspension block, the conductive sheet including a mounting sheet used to connect with the suspension block and a contact structure arranged at one end of the mounting sheet and connected with the mounting sheet, the contact structure being slidably connected with the measuring resistor; The contact structure is an arc-shaped semicircle structure, and the arc-shaped semicircle structure is clamped on the measuring resistor; the conductive sheet further includes an elastic structure arranged at one end of the mounting sheet and connecting the mounting sheet with the contact structure; the elastic structure is an inverted "V" structure including a first end and a second end, the first end of the inverted "V" structure being connected with the mounting sheet and the second end being connected with the contact structure; The bottom of the suspension pipeline is provided with a water inlet for communicating with the bucket, and a one-way valve is arranged on the water inlet, so that the washing water in the bucket can flow into the suspension pipeline through the one-way valve; the bottom of the suspension pipeline is provided with a water outlet, and the water outlet is provided with a water outlet valve, so that the washing water can be discharged from the water outlet in the water discharge stage.

2. A washing apparatus as claimed in claim 1, characterised in that: Further including a water level detection circuit, the water level detection circuit including a protection resistor, a resistor wire, a float block and an ammeter connected in series through wires from the positive pole of a power supply.

3. A washing apparatus as claimed in claim 2, wherein: The resistor wire is arranged in the suspension pipeline along the extension direction of the suspension pipeline, the bottom of the suspension pipeline has the same height as the bottom of the bucket of the washing equipment, and the wire from the positive pole of the power supply is connected to the upper end of the measuring resistor after passing through the protection resistor.

4. A washing apparatus as claimed in claim 2, wherein: The resistor wire is arranged in the suspension pipeline along the extension direction of the suspension pipeline, the bottom of the suspension pipeline has the same height as the bottom of the bucket of the washing equipment, and the wire from the positive pole of the power supply is connected to the lower end of the measuring resistor after passing through the protection resistor.

5. A washing apparatus as claimed in any one of claims 1 to 4, wherein: The bottom of the suspension pipeline is in communication with the bucket, and the top of the suspension pipeline is open.

6. A water level detection method of a washing equipment according to claim 3, characterized in that: The float, the measuring resistor above the float and the power supply form a communication loop, the resistance value R1 of the measuring resistor of the access circuit is obtained, the obtained resistance value R1 is substituted into a preset formula to obtain the water level value H, and the preset formula is: H=[1-R1 / R 总 ]*L, wherein R 总 is the maximum resistance value of the measuring resistor, and L is the total length of the measuring resistor.

7. A water level detection method of a washing equipment according to claim 4, characterized in that: The float, the measuring resistor above the float and the power supply form a communication loop, the resistance value R1 of the measuring resistor of the access circuit is obtained, the obtained resistance value R1 is substituted into a preset formula to obtain the water level value H, and the preset formula is: H=R1 / R 总 *L, wherein: R 总 is the maximum resistance value of the measuring resistor, and L is the total length of the measuring resistor.

8. A water level detection method for a washing apparatus according to claim 6 or 7, characterized in that: The washing equipment also includes a protective resistor connected in series with the measuring resistor to obtain the resistance value R1' of the circuit. The resistance value R1 of the measuring resistor connected to the circuit is R1 = R1. ’ -R0, where R0 is the resistance value of the protective resistor.

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