Control method of clothes treatment equipment and clothes treatment equipment

Abstract

The invention firstly provides a control method of the clothes treatment equipment, and when a high-temperature washing or steam washing and protecting program is carried out, a controller controls a heating device to heat water in a circulating water tank or heat the water until steam is generated, and high-temperature washing water or high-temperature steam is conveyed into a washing cylinder through a circulating water outlet pipe. The invention further provides a laundry treating apparatus. According to the control method of the clothes treatment equipment and the clothes treatment equipment, heating washing and / or steam washing are / is achieved by means of the circulating water tank of the washing machine, steam directly acts on the surfaces of the clothes through the circulating pipeline, the energy utilization rate is increased, and the product cost is not increased.

Description

[0001] The present invention belongs to the technical field of washing equipment, and in particular, relates to a control method of a clothing processing equipment and the clothing processing equipment. Background Art

[0002] With the development of cities and the quickening pace of life, washing machines, as a household appliance that can free users' hands and save users' time in handling housework, are accepted and purchased by more and more users.

[0003] With the development of technology, there are more and more types of washing machines, their functions are increasingly moving towards human-computer interaction, and their functions are becoming more and more complete.

[0004] The drum washing machines on the market now all have a water heating function, and some high-end machines also have a steam washing function. In conventional technology, a heater and a temperature sensor are embedded in the washing drum to control water heating and achieve high-temperature washing; in steam washing, the common way to generate steam is to use a water heater to inject a small amount of water into the washing drum and then heat it to generate steam. The disadvantage of this method is that the water enters between the inner drum and the outer drum, the water volume is difficult to control, the efficiency of steam generation is low, the steam volume is difficult to control, and it is easy to cause dry burning and damage.

[0005] In addition, in this mode, steam is generated from the bottom of the inner drum, travels between the inner drum and the outer drum, and enters the inner drum through the spray port. It cannot directly act on the clothes. Due to the influence of the inner and outer drums and the ambient temperature, a considerable amount of heat will be wasted, resulting in the temperature of the clothes not being able to be quickly raised to the temperature required for mite removal, sterilization and wrinkle removal, affecting the care effect.

[0006] Another method of generating steam is to use the drying heating wire of the washer-dryer to spray water mist onto the heating wire to generate hot steam for steam care of clothes. This method also has some problems. First, the efficiency of generating steam is low, the amount of steam is small, and the steam temperature is also low. It takes a long time to achieve the care and sterilization effect. At the same time, because the water mist acts directly on the heating wire, it will affect the service life of the heating wire.

[0007] To solve the defects of the above two steam generation methods, an external steam generating device can be connected to transport the generated steam into the washing drum through a steam pipe. Although this method can achieve better care effects, the structural changes are relatively large, which increases a lot of costs and is not very competitive.

[0008] Similarly, similar problems also exist for other clothing processing equipment such as shoe washing machines, dryers, etc. Summary of the invention

[0009] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a control method and a clothing processing device, which utilizes the circulating water tank of the washing machine itself to achieve heating washing and / or steam washing, and the steam directly acts on the surface of the clothing through the circulating pipeline, thereby improving energy utilization and not increasing product costs.

[0010] In order to achieve the first object of the invention, the present invention first provides a control method for a clothes processing device, and the technical solution adopted is:

[0011] A control method for a clothing processing device, when entering a high-temperature washing or steam washing program, a controller controls a heating device to heat water in a circulating water tank or heat it to generate steam, and transports the high-temperature washing water or high-temperature steam to a washing tub through a circulating water outlet pipe.

[0012] Furthermore, when entering the steam cleaning program, the controller first controls the drainage pump to drain the residual water in the circulating water tank and enter a certain amount of clean water, and then starts heating to generate steam.

[0013] Furthermore, the amount of steam required for steam washing is determined according to the weight of the clothes and / or the volume of the washing tub, and the quantitative water inlet into the circulating water tank is controlled according to the amount of steam.

[0014] Furthermore, when the maximum water inlet of the circulating water tank is less than the total water inlet corresponding to the required steam volume this time, during the steam delivery process, when it is detected that the circulating water tank is short of water, the heating is stopped and water is refilled; or when the maximum water inlet of the circulating water tank is less than the total water inlet corresponding to the required steam volume this time, the total water inlet is evenly divided into n water inlets, each water inlet is less than or equal to the maximum water inlet of the circulating water tank, and steam is generated after each water inlet. When it is detected that the circulating water tank is short of water, the heating is stopped and water is refilled; or when the maximum water inlet of the circulating water tank is less than the total water inlet corresponding to the required steam volume this time, water is first added to the maximum water inlet of the circulating water tank. When the water level in the circulating water tank drops to a predetermined value, water is continuously replenished at a predetermined speed until the total water inlet is reached.

[0015] Furthermore, during the washing process, the circulation pump is started, and the washing water in the washing tub enters the circulating water tank. The controller controls the rinsing program according to the change in conductivity in the circulating water tank before and after washing and / or before and after rinsing.

[0016] Furthermore, when the difference between the conductivity after cleaning and the conductivity after the first rinsing is less than a first preset value, an additional rinsing process is added after the normal rinsing program is completed.

[0017] Further, the circuit detects and determines whether the difference between the conductivity after the cleaning process and the conductivity after the additional rinsing process is less than a second preset value. If not, a rinsing process is added again. If so, the rinsing program ends.

[0018] Furthermore, when the total number of rinse times is greater than a preset value, the rinsing program ends.

[0019] Furthermore, a conductivity difference-rinsing water volume compensation value correspondence table is preset in the controller. When the difference between the conductivity value after cleaning and the conductivity value after the first rinsing is less than a first preset value, the corresponding compensation value is selected in the correspondence table and the water intake of the next rinsing process is controlled.

[0020] Another object of the present invention is to provide a clothes processing device, which adopts the following technical solution:

[0021] A clothing processing device includes a washing drum, a circulation system and a controller, wherein the circulation system includes a circulating water tank connected to the washing drum, a heating device is arranged in the circulating water tank, and the circulating pipes of the circulating water tank are connected to the washing drum to transport circulating washing water, high-temperature steam and / or high-temperature washing water into the washing drum, and the controller has a built-in control method as described above.

[0022] In summary, the control method and the clothing processing device provided by the present invention have the following beneficial effects compared with the prior art:

[0023] 1. Directly use the circulating water tank to replace the existing water heater and related control components, so as to achieve the ideal washing and care effect without increasing too much cost;

[0024] 2. The water outlet pipe (steam pipe) of the circulation system is set above the washing water surface, spraying hot water or high-temperature steam into the washing drum, so that the steam can directly act on the clothes, which can significantly improve the sterilization, mite removal, wrinkle removal and cleaning effects, improve energy utilization, and greatly shorten the time of the entire washing process;

[0025] 3. It can cooperate with the drying system and software algorithm to accurately control the amount of steam and the temperature of steam acting on clothes, and perform reasonable and accurate control for different materials;

[0026] 4. The water level detection probe can be used to monitor the conductivity of washing water. The content of detergent can be obtained through the change of conductivity, so that the number of rinses or the amount of rinse water can be appropriately increased or decreased, which improves the washing and care effect, protects clothes, and meets the high-quality needs of users;

[0027] 5. Modular design, good versatility, and further reduce costs. By equipping with an independent controller and adopting a universal Bus method, it can be suitable for different models. At the same time, the outer cylinder structure design can be simplified by eliminating the heating system and related control components of the original model.

[0028] 6. The original water heating tank can be eliminated, and the water utilization rate is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0030] Figure 1 : A schematic diagram of the overall structure of a clothing processing device provided by the present invention;

[0031] Figure 2 : A schematic structural diagram of a circulating water tank in a clothes processing device provided by the present invention;

[0032] Figure 3 : A steam washing process control logic in a clothing processing device provided by the present invention;

[0033] Figure 4 : A rinsing process control logic in a clothes processing device provided by the present invention;

[0034] Among them: washing drum 1, water inlet valve 2, water inlet branch pipe 3, drain pipe 4, drain pump 5, circulation pump 6, residual water pump 7, residual water outlet 8, controller 9, heating pipe interface 10, recoverable protector 11, heating pipe 12, NTC 13, low water level probe 14, high water level probe 15, steam pump 16, circulating water outlet 17, circulating water outlet pipe 18, spray port 19, stop valve 20, clean water outlet 21, circulating water inlet 22, circulating water tank 23

[0035] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0037] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The present invention first provides a control method for a clothing processing device, a control method for a clothing processing device, and a control method for a clothing processing device. When entering a high-temperature washing or steam washing program, a controller 9 controls a heating device to heat the water in a circulating water tank 23 or heat it to generate steam, and transports the high-temperature washing water or high-temperature steam into a washing drum 1.

[0040] This embodiment takes a drum washing machine as an example to introduce the clothing processing device and the corresponding control method provided by the present invention.

[0041] like Figure 1 The drum washing machine shown includes a washing drum 1, a circulation system, a water inlet system and a drainage system. The washing drum 1 includes an inner drum and an outer drum. The water inlet system includes a water inlet pipe (not shown in the figure), a water inlet branch pipe 3 and a water inlet valve 2. The water inlet valve 2 is a three-way valve. The water inlet end is connected to a water source, such as tap water, through a main pipe. One water outlet end is connected to the inner drum through the water inlet pipe, and the other water outlet end is connected to the circulation system through the water inlet branch pipe 3. The controller 9 is connected to the water inlet valve 2 to control the opening and closing states of the two outlet ends to control the water inlet valve 2 to supply water to the washing drum 1 or the circulation system respectively.

[0042] like Figure 1 and Figure 2 As shown, the circulation system includes a circulation water tank 23, which is arranged on the base of the washing machine and located at the lower part of the washing tub 1.

[0043] The circulating water tank 23 is provided with a circulating water inlet 22, a circulating water outlet 17 and a residual water outlet 8. The washing tub 1 is provided with a circulating water outlet, one end of the circulating water inlet pipe is connected with the circulating water inlet 22 on the circulating water tank 23, and the other end is connected with the circulating water outlet on the washing tub 1, so that the washing water in the washing tub 1 is introduced into the circulating water tank 23; the washing tub 1 is provided with a spray port 19, one end of the circulating water outlet pipe 18 is connected with the spray port 19, and the other end is connected with the circulating water outlet 17, so that the washing water in the circulating water tank 23 is sprayed from the upper part of the washing tub 1 into the washing tub 1.

[0044] A circulating pump 6 is provided on the circulating water inlet pipe, and part of the washing water in the washing tub 1 is circulated outside the tub under the action of the circulating pump 6 to improve the washing effect. A stop valve 20 is provided between the circulating pump 6 and the circulating water inlet 22 to prevent the water in the circulating water tank 23 from flowing back.

[0045] Further, the water outlet end of the water inlet branch pipe 3 is connected to the circulating water tank 23, preferably, as Figure 2 As shown, a clean water port 21 is provided on the pipeline between the circulation pump 6 and the circulation water inlet 22, and the water outlet of the water inlet branch pipe 3 is connected to the clean water port 21, and clean water is injected into the circulation water tank 23. More preferably, the clean water port 21 is provided on the pipeline between the circulation pump 6 and the stop valve 20 to prevent the water in the circulation water tank 23 from flowing back into the water inlet branch pipe 3 or the circulation water inlet pipe through the circulation water inlet 22. The water inlet branch pipe 3 and the circulation water inlet pipe share a circulation water inlet 22 on the circulation water tank 23, which reduces the number of openings on the circulation water tank 23 and improves the overall strength of the circulation water tank 23.

[0046] A residual water outlet 8 is also provided on the circulating water tank 23. The position of the residual water outlet 8 is lower than the circulating water inlet 22. The residual water outlet 8 is connected to the residual water pump 7 through a pipeline. After washing, the residual water in the circulating water tank 23 is discharged from the circulating water tank 23 to prevent the water accumulated in the circulating water tank 23 from breeding bacteria and contaminating the clothes to be washed next time when the washing machine is not used for a long time.

[0047] Furthermore, the drainage system of the washing machine described above includes a drainage pump 5 and a drainage pipe 4. The water inlet of the drainage pump 5 is connected to the washing tub 1 through a pipeline (a section of the drainage pipe 4), and the water outlet is connected to another section of the drainage pipe 4. In this embodiment, the drainage pump 5 is a three-way pump, including two water inlets and one water outlet. The water outlet is connected to the drainage pipe 4, one of the water inlets is connected to the washing tub 1 through a pipeline, and the other water inlet is connected to the residual water pump 7 through another section of the pipeline. The controller 9 controls the action of the drainage pump 5, and the two water inlets are respectively connected to control the washing water in the washing tub 1 and the residual water in the circulating water tank 23 to be discharged respectively, and no backflow phenomenon will occur. The two water inlets of the drainage pump 5 cannot be in an open state at the same time to prevent the backflow of the washing water. For example, when the washing tub 1 is drained, the washing water can be prevented from entering the circulating water tank 23 through the drainage pump 5, or when the residual water in the circulating water tank 23 is discharged, the residual water enters the washing tub 1 through the drainage pump 5.

[0048] The two water inlets of the drain pump 5 can control the switch state respectively to prevent unnecessary backflow problems. For example, when the washing tub 1 is drained, the washing water can be prevented from entering the circulating water tank 23, or when the circulating water tank 23 is draining residual water, the residual water will not enter the washing tub 1. The specific structure of the drain pump 5 is not the focus of the invention of the present invention, and any drain pump 5 that can realize two-phase water intake and one-phase drainage can be suitable for this application.

[0049] In practical applications, the residual water pump 7 may not be separately provided, and one water inlet of the drainage pump 5 is directly connected to the residual water outlet 8 of the circulating water tank 23 through a pipeline.

[0050] When the residual water pump 7 is provided, when the residual washing water in the circulating water tank 23 is drained, the drain pump 5 and the residual water pump 7 operate synchronously to drain the residual washing water in the circulating water tank 23. The washing water remaining in the circulating drain pipe 4 that cannot be discharged simply by gravity can also be discharged smoothly under the negative pressure of the drain pump 5 and the residual water pump 7, avoiding affecting the subsequent steam discharge.

[0051] Preferably, in this embodiment, the circulating water inlet 22 and the residual water outlet 8 of the circulating water tank 23 are arranged on the same side wall of the circulating water tank 23, and the position of the drain port is higher than the position of the residual water outlet 8. The circulating water outlet 17 is arranged on the side wall opposite to the circulating water inlet 22. It is recommended that the circulating water outlet 17 is arranged on the upper part of the side wall. In the horizontal position, the position of the water outlet is higher than the position of the water inlet, so that a certain amount of water is stored in the circulating water tank 23 before being discharged, and by controlling the flow of the water inlet and the water outlet, the water volume in the circulating water tank 23 is controlled to remain relatively constant at all times, so that the circulation of the washing water continues.

[0052] A heating device is provided in the circulating water tank 23 to heat the circulating washing water in the circulating water tank 23 or to heat the clean water in the circulating water tank 23 to generate steam. The heating device includes a heating pipe 12, which is provided at the bottom of the circulating water tank 23. A heating pipe 12 interface is provided at the lower part of the side wall of the circulating water tank 23, and the heating pipe 12 in the circulating water tank 23 is connected to the power source outside the box through the heating pipe 12 interface. The power source described herein includes but is not limited to the main power supply of the washing machine, the controller 9, the external power supply, and other devices that can provide the power necessary for the electric heating of the heating pipe 12.

[0053] A recoverable protector 11, such as an NTC resistor, is provided at at least one interface of the heating tubes 12. When the temperature exceeds a limit value, the electric heating tube 12 is automatically disconnected from the power supply to prevent dry burning.

[0054] Or an alarm is set in the circulating water tank 23. When dry burning occurs, the temperature in the circulating water tank 23 exceeds a preset value, or the heating time exceeds a time threshold, an alarm prompts, and the controller 9 controls the recoverable protector 11 to disconnect, and the heating tube 12 stops heating.

[0055] Alternatively, NTC13 is arranged on the heating tube 12. When dry burning occurs or the temperature in the circulating water tank 23 exceeds a preset value, NTC13 is automatically disconnected, the heating device circuit is disconnected, and heating is stopped.

[0056] A high water level probe 15 and a low water level probe 14 are provided in the circulating water tank 23 to detect the minimum water level and the maximum water level limit in the circulating water tank 23, respectively. A gap is left between the maximum water level probe 15 and the top of the circulating water tank 23 to store the steam generated when the water (clean water or washing water) in the water tank boils, to prevent excessive pressure in the circulating water tank 23. The low water level probe 14 is located higher than the top surface of the heating tube 12 to prevent dry burning.

[0057] The high water level probe 15 and the low water level probe 14 are connected to the controller 9. According to the control process built into the controller 9, only when the water level in the circulating water tank 23 is between the high water level probe 15 and the low water level probe 14, can the heating device be controlled to heat the water in the circulating water tank 23 or heat it to generate steam. When the water level is lower than the position of the low water level probe 14, the heating is stopped to prevent dry burning. The position of the high water level probe 15 is lower than the water outlet position of the circulating water tank 23, providing necessary space for the generated steam.

[0058] Furthermore, a water level detector may be provided in the circulating water tank 23 to obtain the water level in the circulating water tank 23 in real time, so as to avoid dry burning or excessive water level problems when the water level probe fails.

[0059] In this embodiment, the water level probe (including the high water level probe 15 and the low water level probe 14) is used to define the high and low water level limits in the circulating water tank 23. In practical applications, in addition to the position of the water level probe, the water level limit can also be set. The water level probe can also detect the conductivity, and the rinsing process is controlled according to the change of the conductivity.

[0060] It should be noted that, in this embodiment, the circulating water outlet 17 on the circulating water tank 23 is also a steam outlet, and a steam pump 16 is provided at the circulating water outlet 17 or the circulating water outlet pipe to control the steam delivery process and to count the flow rate. The steam generated by the heating device heating the clean water in the circulating water tank 23 directly sprays high-temperature steam to the clothes in the washing tub 1 through the water outlet, the circulating water outlet pipe 18, and the spray port 19.

[0061] In this embodiment, the controller 9 is connected to electrical components such as the heating device, the high water level probe 15, the low water level probe 14, the circulation pump 6, the residual water pump 7, and the drainage pump 5 through the BUS bus to achieve operation control of each component.

[0062] The controller 9 pre-stores the control process of the clothing processing device, including specific control methods such as washing process, high-temperature washing, steam washing and care. Among them:

[0063] High temperature washing mode

[0064] During the normal washing process, the controller 9 controls the circulation pump 6 to start according to a predetermined process. Under the action of the circulation pump 6, the washing water in the washing tub 1 enters the circulation water tank 23. When the water level in the circulation water tank 23 reaches the circulation water outlet 17, it is sprayed into the washing tub 1 from the spray port 19 at the top of the washing tub 1 through the circulation water outlet 17 and the circulation drain pipe 4, and the cycle is repeated. The washing efficiency is improved through the self-injection circulation and spraying of the washing water.

[0065] When entering high-temperature washing, the controller 9 determines that the detection circulation system is in the open state. If the circulation system is closed, the circulation system is controlled to be turned on. After being turned on for a predetermined time and / or when it is detected that the water level in the circulating water tank 23 is between the high water level probe 15 and the low water level probe 14, the heater is controlled to operate to heat the circulating washing water in the circulating water tank 23.

[0066] When the water level reaches the circulating water outlet 17, the heated circulating washing water in the circulating water tank 23 is discharged from the circulating water outlet 17 and re-enters the washing tub 1. The water temperature in the washing tub 1 gradually increases in a cycle. When the temperature in the washing tub 1 reaches the preset value for high-temperature washing, the heating device is controlled to stop heating, or the power of the heating device is reduced to maintain the washing temperature in the washing tub 1.

[0067] Preferably, when the water level in the circulating water tank 23 reaches the position of the low water level probe 14, that is, when the low water level probe 14 detects the water level in the circulating water tank 23, the controller 9 immediately controls the heating device to start heating at maximum power. At this time, the amount of water in the circulating water tank 23 is small, and the power of the heating tube 12 is maximum, and the water temperature rises quickly; while heating, the circulating pump 6 continuously injects water into the circulating water tank 23 to prevent the water temperature from rising too quickly, causing the circulating washing water to boil and generate steam, causing the water level to drop rapidly, and the steam affects the detection result of the low water level probe 14, causing the heating tube 12 to dry burn.

[0068] When the water level reaches the circulating water outlet 17, the circulating washing water that has been heated to a high temperature is re-injected into the washing tub 1, forming a complete circulation process of the washing water. During the circulation process, the heating pipe 12 continues to work, and the circulating water inlet pipe continues to inject low-temperature water into the circulating water tank 23 to achieve continuous heating, so as to quickly achieve the heating of the washing water.

[0069] Since the heated high-temperature circulating washing water is sprayed above the water surface in the washing tub 1, the water level in the washing tub 1 will be higher at the top and lower at the bottom. In order to avoid the influence of the spraying water on the detection result of the temperature sensor, it is recommended that the temperature sensor be arranged at the lower part of the washing tub 1 and away from the circulating water tank 23. On the one hand, the influence of the temperature of the spraying water can be avoided. On the other hand, when the heating device heats the washing water in the circulating water tank 23, the outer surface of the circulating water tank 23 will also generate high temperature. The radiant heat will cause the local temperature of the washing tub 1 and the washing water in the washing tub 1 near the circulating water tank 23 to rise. The temperature sensor is arranged at a position away from this place, which can also avoid temperature detection errors.

[0070] Preferably, during the heating process, the washing drum 1 is controlled to rotate slowly so that the temperature of the washing water is evenly mixed during the rotation process to avoid temperature errors; or during the heating process, according to a preset program, at predetermined intervals, the washing drum 1 is controlled to rotate slowly at a predetermined speed for a period of time and then stop until the water temperature reaches a predetermined temperature; or a plurality of temperature values ​​lower than the set high temperature washing temperature are pre-stored in the controller 9, and the water temperature is detected in real time. When the real-time water temperature is greater than or equal to a certain set temperature value, the washing drum 1 is controlled to rotate slowly at a predetermined speed for a period of time and then stop, and the real-time water temperature is detected and the rotation process of the washing drum 1 is controlled again in a cycle until the water temperature reaches the predetermined temperature. The slow rotation described here refers to a rotation speed far lower than that of normal washing, which can achieve shaking and even mixing of the washing water in the washing drum 1, so that the water temperature in the washing drum 1 is relatively consistent, and the specific rotation state and rotation process of the washing drum 1 are controlled by the rotation time and the number of rotations without limitation.

[0071] Steam cleaning mode

[0072] Generally speaking, the steam washing and care program is usually set after the dehydration program. Users can select the full process of washing (high-temperature washing), rinsing, dehydration and drying, and steam washing and care when turning on the machine, or they can only select the steam washing and care mode.

[0073] When the controller 9 detects the steam washing instruction and detects that the process enters the steam washing program, it controls the steam generating device to generate steam and release the steam into the washing tub 1. In this embodiment, as in the above-mentioned clothes processing device, no additional steam generating device is provided, but the circulating water tank 23 and the heating device in the circulation system are used to generate steam and spray the steam into the washing tub 1 through the circulating water outlet 17 and the circulating water outlet pipe 18.

[0074] In this embodiment, the circulation system replaces the steam generating device to generate steam, and directly transports the steam to the washing tub 1 through the circulation water outlet pipe 18, including the following two embodiments:

[0075] Embodiment 1

[0076] When entering the steam washing program, the circulation system is ready to generate steam. When generating steam, the stop valve 20 at the circulation water inlet 22 of the circulation water tank 23 is closed.

[0077] When entering the steam washing program, the residual water pump 7 is controlled to operate to drain the residual washing water in the circulating water tank 23. The water level sensor can be used to detect whether the residual water is drained, or the flow meter of the residual water pump 7 can be used to detect whether water passes to determine whether the residual washing water in the circulating water tank 23 is drained. As mentioned above, while draining the residual washing water, the residual water in the circulating water outlet pipe 18 can also be drained to ensure that the entire steam delivery path is unobstructed. When draining the residual water, the stop valve 20 is opened to drain the residual washing water in the circulating water inlet pipe at the same time.

[0078] The residual water in the circulating water tank 23 is confirmed to be emptied by any method such as time and / or water level sensor, residual water pump 7 (drain pump 5), etc. The stop valve 20 and the water inlet valve 2 are opened, and the circulating pump 6 is closed. Clean water enters the emptied circulating water tank 23 through the water inlet valve 2, the stop valve 20, and the circulating water inlet 22, that is, clean water is injected into the circulating water tank 23.

[0079] During the water inlet process, the water inlet timer at the water inlet valve 2 and / or the controller 9 starts timing. The timer can accumulate the water inlet time to count the total water inlet time of this steam washing and for precise control of the subsequent water inlet volume. It can also prevent the water level sensor and water level probe in the circulating water tank 23 from failing, resulting in excessive or insufficient water inlet.

[0080] After entering the steam washing, the controller 9 first controls the timer to zero, and the timer starts timing while water is entering. The total water inflow is controlled by the flow rate and water inflow time of the water inlet valve 2, or the total water inflow time is controlled by the total water inflow. When the actual total water inflow time or the actual total water inflow reaches the calculated value, the water inflow is stopped.

[0081] As described above when introducing the water level probe, when the water level sensor detects that the water level is between the high water level probe 15 and the low water level probe 14, preferably, when the water level reaches the position of the low water level probe 14, that is, when the low water level probe 14 detects the water level information, the controller 9 controls the heating device to start heating, and water continues to flow in during heating. Starting heating from a low water level can quickly increase the temperature in the circulating water tank 23 and improve heating efficiency.

[0082] The water level sensor and / or water level probe continuously detects the water level information in the water tank. When the water level reaches the position of the high water level probe 15, the water inlet valve 2 is controlled to be closed, the stop valve 20 is closed, and the heater continues to heat until steam is generated.

[0083] A flow meter is set at the circulating water outlet 17 of the circulating water tank 23, the spray outlet 19 or any position of the circulating water outlet pipe 18 to count the amount of steam generated. When the steam amount reaches the steam limit, the heating is stopped, and the steam generated by the residual heat of the heating device and the remaining steam in the circulating water tank 23 are discharged into the washing tub 1. The total amount of steam delivered is just equivalent to the total amount of steam required for this steam washing.

[0084] Since the steam volume cannot be accurately controlled, the "total steam volume delivered is just equal to the total steam volume required for this steam washing" mentioned in this article means that the error between the actual steam volume delivered and the total steam volume is within a predetermined range. For example, when the set error is ±5%, 95% of the total steam volume ≤ the actual steam volume delivered obtained by the flow meter ≤ 105% of the total steam volume, the total steam volume delivered is considered to be just equal to the total steam volume required for this steam washing. The predetermined range, i.e., the error value, can be determined based on factors such as the sealing effect of the washing machine and the rated washing capacity of the washing machine.

[0085] Furthermore, when the laundry weight is different, the predetermined range, i.e., the error value, is also different. Different predetermined ranges corresponding to different laundry weight intervals are pre-stored in the controller 9. The laundry weight may be the weight of dry clothes to be washed or the weight of clothes after washing and dehydration. The lower limit and upper limit of the error value may be different. For example, the lower limit of the error is -5%, i.e., the lower limit of the total steam volume delivered is 95% of the total steam volume, and the upper limit of the error is 10%, i.e., the upper limit of the total steam volume delivered is 110% of the total steam volume.

[0086] When the total steam volume delivered is lower than the lower limit of the error, that is, the total steam volume delivered is less than 95% of the total steam volume, the difference between the real-time steam volume delivered and the total steam volume is obtained through the flow meter, and the heating power of the heating tube 12, the water volume in the circulating water tank 23, and the water temperature are combined to calculate the supplementary heating time of the heating tube 12 to supplement the insufficient steam volume. When the water volume in the circulating water tank 23 is insufficient, a certain amount of water is added first to prevent dry burning when generating steam. After adding water, the water temperature is re-detected and the supplementary heating time of the heating tube 12 is calculated.

[0087] When the total amount of steam delivered is higher than the upper limit of the error, part of the steam can be discharged through the steam valve provided on the washing tub 1 to prevent accidents.

[0088] In the process of utilizing the circulation system to generate and transport steam into the washing drum 1, the steam generation, transport, and steam volume can be accurately controlled through the built-in algorithm. The specific algorithm is not the focus of the invention of this application and is not limited. Any algorithm that exists or may appear in the future is applicable to this application.

[0089] Furthermore, the total steam volume delivered can be counted by a flow meter, and the pressure gauge provided in the washing tub 1 can be used to determine whether the steam volume in the washing tub 1 meets the steam washing demand. Similarly, the real-time pressure value in the washing tub 1 can also be set with an error value as described above.

[0090] After a certain amount of steam is injected into the washing drum 1, the clothes are cared for with high-temperature steam. After a predetermined time, the steam in the washing drum 1 is discharged to complete the steam washing. After the temperature in the washing drum 1 drops to a preset temperature, an alarm is sounded to indicate that the steam washing program is over.

[0091] In this embodiment, as described above, the amount of water entering the circulating water tank 23 is controlled by timing. When the water level in the circulating water tank 23 reaches the upper limit when steam is generated, the water intake is stopped and the timing is stopped to prevent water overflow or insufficient space on the water surface, which causes the generated steam pressure to be too high and affects the sealing of the circulation system.

[0092] The upper limit of the water level when steam is generated can be set below the circulating water outlet 17 of the circulating water tank 23, and further, can be set at the high water level probe 15, or set below the high water level probe 15, that is, set between the high water level probe 15 and the low water level probe 14.

[0093] Embodiment 2

[0094] The difference from the first embodiment is that Figure 3As shown, the water level sensor detects the water level information in the circulating water tank 23 in real time. The water level value detected by the water level sensor in real time is set to P mark, the water level value detected by the high water level probe 15 or the height value of the high water level probe 15 is set to P high, and the water level value detected by the low water level probe 14 or the height value of the high water level probe 15 is set to P low. When P high > P mark and P low > P mark, it is regarded that the circulating washing water in the circulating water tank 23 has been drained and the circulating water tank 23 is regarded as empty.

[0095] The controller 9 controls the water inlet valve 2 and / or the water inlet timer at the controller 9 to be reset (returned to zero). After determining that the timer is reset, the water inlet valve 2 is controlled to open, and the timer starts timing at the same time. The timer accumulates the total water inlet time during the steam washing process to control the total water inlet amount and the single maximum water inlet amount. The timer is set. As mentioned above, when any component of the water level sensor or the water level probe fails and cannot provide true water level information, the status of the water inlet valve 2 and the alarm prompt are controlled.

[0096] In this embodiment, during the process of water inletting into the circulating water tank 23, the heating device does not operate. When it is detected that the water level in the circulating water tank 23 reaches the water level limit, the circulating water tank 23 is considered full, the water inlet valve 2 stops inletting water, and the water inlet timer is suspended. The upper limit of the water level can be set at any position between the highest water level probe 15 and the lowest water level probe 14. When the position of the highest water level probe 15 is relatively low, in order to detect the stable water level height and the conductivity in the circulating washing water, the upper limit of the water level can be set at any position between the highest water level probe 15 and the circulating water outlet 17. It can be set that when P high ≥ P mark, and P low ≥ P mark, the circulating water tank 23 is considered full.

[0097] After the circulating water tank 23 is full of water, the heating timer is reset (returned to zero). In actual application, the heating timer and the water inlet timer can be reset uniformly by the controller 9 after entering the steam washing program, or directly reset after the steam washing program ends.

[0098] The circulating water tank 23 is full of water and the heating timer has been reset. The heating device is controlled to heat the clean water in the circulating water tank 23 until steam is generated, and the heating timer starts timing.

[0099] According to the heating power of the heater and the real-time water temperature, the steam time required to heat and evaporate all the clean water in the circulating water tank 23 to generate steam until the water level reaches the lower limit position (the position to prevent dry burning) is calculated. When the accumulated heating time of the timer reaches the steam time, the heating is stopped.

[0100] Furthermore, when the amount of steam required for steam cleaning is large and the amount of water inlet at one time cannot meet the steam demand, water can be added multiple times. During the heating and evaporation process, the water level information detected by the water level sensor is used to detect whether there is a lack of water to prevent dry burning. When P low > P mark, it is regarded as a lack of water, and the heater is controlled to stop heating, the heating timer stops timing, the water inlet valve 2 and the water inlet timer are opened, water is added again and the water inlet time is accumulated until the steam amount meets the total steam amount required for this steam cleaning.

[0101] In the above two steam generation control embodiments, a lower limit and an upper limit of the water level are respectively set in the circulating water tank 23. The lower limit of the water level prevents dry boiling, and the upper limit of the water level limits the full state of the circulating water tank 23 and prevents the water level in the water tank from being too high, which affects the water boiling process.

[0102] As described in Example 1, the total steam volume for this steam washing is determined based on the weight of the clothes (the weight of the dry clothes to be washed or the weight of the clothes after dehydration). For a washing machine with a small processing capacity, such as a washing machine with a rated processing capacity of less than 3 kilograms, the amount of clothes is small, and the weight change of the clothes washed each time is relatively small. Therefore, when the amount of steam required for steam washing does not change much, the steam volume can be solidified into a constant value.

[0103] After calculating and obtaining the theoretical total steam volume for steam washing, the total steam volume is converted into the total water intake volume for this steam washing. When the water intake time meets the total water intake volume requirement, the water intake valve 2 is closed.

[0104] The total water intake is converted from the total steam volume required for this steam cleaning, and includes the minimum water volume required to prevent dry burning. Preferably, in order to avoid insufficient steam volume, the total water intake also includes the error water volume. Therefore, in this embodiment, the total water intake includes the water volume converted from the steam volume required for this steam cleaning, the minimum water volume for preventing dry burning, and the error water volume. The error water volume can be a fixed value, and this fixed value can also be adjusted according to the total steam volume. Or the total water intake is converted by increasing the total steam volume by a predetermined value, and this conversion value covers the minimum water volume for preventing dry burning.

[0105] When the total water intake is greater than the water intake corresponding to the upper limit of the water level of the circulating water tank 23, and a single water intake cannot meet the steam demand, a batch water intake method may be used. The batch water intake method includes but is not limited to:

[0106] When the water intake reaches the upper limit of the water level, if the water intake still does not reach the total water intake, the water intake is stopped at this time, and water is replenished after a predetermined time and the water intake time is accumulated. During this period of time, the water in the circulating water tank 23 continues to evaporate, and when the water level reaches the lower limit, that is, when the lack of water in the circulating water tank 23 is detected, water is replenished until the upper limit of the water level is reached, and this process is repeated until the water intake time meets the total water intake requirement;

[0107] When the water inflow reaches the upper limit of the water level, if the water inflow still does not reach the total water inflow, the water inflow is stopped at this time, and the heating and evaporation are continued. When the water level drops to the lower limit of the water level, that is, when the lack of water in the circulating water tank 23 is detected, water is re-introduced, and this process is repeated until the water inflow time meets the total water inflow requirement;

[0108] The total water inflow is evenly divided into n water inflows, n≥2. After each quantitative water inflow, the water level is at or below the upper limit of the water level, that is, each water inflow is less than or equal to the maximum water inflow of the circulating water tank 23 (the circulating water tank 23 is full). After each quantitative water inflow is completed and evaporated, when it is detected that the water level drops to the lower limit of the water level, that is, when water shortage is detected, water is inflowed again, and this is repeated n times;

[0109] The maximum water inflow into the circulating water tank 23 for the first time, that is, the water inflow to the upper limit of the water level, can optionally be continuously heated during the water inflow process (Example 1), and continuously heated after the water inflow stops. When the water level in the circulating water tank 23 drops to a predetermined value (including but not limited to the lower limit of the water level, any position of the lower limit of the water level and the upper limit of the water level) or after a predetermined time, water is continuously replenished at a predetermined speed until the total water inflow is reached; in this way, the water inflow speed is equivalent to the evaporation speed, so that the water surface remains relatively stable, and will not greatly affect the water temperature, and steam is stably generated, so that the steam is continuously transported to the washing drum 1.

[0110] When water shortage is detected and water needs to be replenished, the accumulated heating time of the controller 9 can be used for heater protection. When the accumulated heating time exceeds the preset threshold, the recoverable protector 11 is disconnected, so that the heating tube 12 is disconnected from the power supply. After the heating tube 12 cools down for a certain period of time, the recoverable protector 11 is reconnected, and the heating tube 12 continues to heat. The recoverable protector 11 is also applicable to the heating control of the high steam washing process.

[0111] In the steam cleaning procedure described above, the processes not mentioned may adopt conventional technology or any technology that may appear in the future without limitation or requirement.

[0112] Rinse mode

[0113] The rinsing mode described in this embodiment includes a rinsing program after washing (main washing) in the whole washing process and a rinsing program selected separately by the user.

[0114] Rinse procedure in the whole washing process

[0115] After the user selects full-flow washing, the circulation system starts during the washing process, and the washing water enters the circulating water tank 23 under the action of the circulating pump 6 and then sprays back to the washing tub 1. In this embodiment, the high water level probe 15 and the low water level probe 14 can detect the conductivity of the washing water while detecting the water level. The content of detergent in the washing water can be calculated from the conductivity of the washing water, and the rinsing program can be controlled by the change of conductivity after washing and rinsing, such as selecting regular rinsing or adding a rinsing process to reduce the content of detergent remaining on the clothes.

[0116] like Figure 4 As shown, after the user selects the full washing process and the program starts, the controller 9 controls the water inlet valve 2 to start water intake. The conductivity value d1 of the clean water is pre-stored in the controller 9, or the conductivity value d1 of the clean water is detected during the water intake process.

[0117] When the water level probe is used to detect the clean water conductivity d1, in this embodiment, no detergent is added at the initial stage of water inflow, and after the water inflow reaches a predetermined amount, the circulation system is turned on to detect the clean water conductivity d1. After obtaining the clean water conductivity d1, detergent is added.

[0118] After the detergent is added and the water inflow is completed, the washing tub 1 is rotated at a low speed to allow the detergent to fully dissolve, and then the conductivity d2 of the washing water is detected.

[0119] After the main washing process is finished, before dehydration, the conductivity value d3 of the washing water is detected again, and after dehydration, the rinsing program is entered.

[0120] In the conventional process, the rinsing procedure after the main washing includes two rinsing processes. Before the first rinsing is completed, the conductivity d4 of the washing water after the first rinsing is detected again, and the difference between the conductivity d3 after the main washing is completed and the conductivity d4 after the first rinsing is calculated, and the difference is compared with the first preset value t1. When (d3-d4)≥t1, the normal rinsing procedure is performed.

[0121] Furthermore, the difference between the conductivity d3 after the main wash and the conductivity d4 after the first rinse is continuously partitioned, each interval corresponds to a rinse water compensation value, and a correspondence table of the conductivity difference interval and the rinse water compensation value is pre-stored in the controller 9. When (d3-d4)≥t1, the interval where d3-d4 is located is determined to obtain the rinse water compensation value, and in the next rinsing process, the compensatory water inlet is increased on the basis of the normal water inlet, and the rinsing rate is improved by increasing the water inlet during the rinsing process.

[0122] When (d3-d4)<t1, it is considered that after the first rinse, the removal of detergent in the single rinse process is not ideal, and another rinse process is added after the normal rinse program.

[0123] In the normal rinsing program, the number of rinsing processes is set to e. When (d3-d4)<t1, an additional rinsing process is added, so that the number of rinsing processes in this rinsing program is e+1, and the controller 9 records the number of rinsing processes.

[0124] Before the additional rinsing process ends, the conductivity d5 of the washing water is detected again, and the difference between the conductivity d3 after the main washing and the conductivity d5 after the additional rinsing process is calculated. The difference is compared with the second preset value t2. When (d3-d5)≥t2, the rinsing program ends.

[0125] When (d3-d5)<t2, it is considered that the detergent remaining on the clothes still exceeds the standard, and an additional rinsing process is required.

[0126] Repeat the above steps, cyclically detect the conductivity before each additional rinsing process, calculate the conductivity difference, and compare it with the second preset value t2 to determine whether an additional rinsing process is required. Repeat the cycle until (d3-d5)≥t2, then stop the rinsing process, and after dehydration and drying, an alarm will be sounded to remind the user that the washing process is over.

[0127] In order to avoid over-rinsing, wear and tear of clothes and waste of water resources, when the number of rinsing processes accumulated in the controller 9 is greater than a preset value, such as when the number of rinsing times is greater than 5 times, the rinsing program is also controlled to end.

[0128] Furthermore, the controller 9 also includes a correspondence table of the conductivity difference interval of the additional rinsing process and the corresponding rinse water compensation value. When (d3-d5) < t2 and the number of rinsing processes is less than the preset value, the corresponding rinse water compensation value is selected according to the difference interval where d3-d5 is located, and the water intake is increased in the next additional rinsing process to complete the rinsing process as soon as possible.

[0129] Preferably, as described above, before the main wash, the conductivity d1 of the clean water and the conductivity d2 of the washing water before the start of washing are also collected, and the washing water intake is obtained according to the weight of the clothes, and the difference d2-d1 is compared with the preset value t0 to determine whether the detergent amount is sufficient.

[0130] When d2-d1<t0, it is considered that the detergent is insufficient and needs to be supplemented. When the washing machine can only add detergent manually, the controller 9 issues an alarm prompt to prompt the user to add detergent. When the prompt time exceeds the preset time limit, the controller 9 determines that the user chooses not to add detergent and directly performs the washing operation; when the washing machine can automatically add detergent, the controller 9 controls to add detergent directly and automatically. Preferably, during the water inlet process, after the detergent is added, the controller 9 controls the washing drum 1 to start rotating at a speed lower than that during the main washing, so that the detergent is evenly mixed with the water that has been in. After the rotation is completed, the conductivity d2 is detected and it is determined whether the detergent needs to be supplemented. Avoid detecting the conductivity d2 after the water inlet is completed, and when the detergent is supplemented, the water inlet volume increases, and the detergent in the detergent box cannot be completely rinsed out, resulting in the detergent being rinsed into the washing drum 1 during rinsing, resulting in the conductivity d4 after the first rinse becoming larger, making it inaccurate to determine whether to increase the number of additional rinses.

[0131] When d2-d1≥t0, it is considered that the detergent is sufficient to meet the cleaning requirements, and the main washing process is carried out directly.

[0132] Separate rinse cycle

[0133] The user can wash by hand or in other ways to perform the main wash, and select the washing machine to perform the rinsing procedure. When the rinsing procedure is performed separately, according to the conventional process, the controller 9 determines the rinsing water intake according to the weight of the clothes.

[0134] When the clothes are added to the washing drum 1 and the water intake is completed, the controller 9 controls the washing drum 1 to rotate at a speed lower than the normal rinsing speed for a predetermined time and starts the circulation system. After stopping, the conductivity d3′ is detected. Before the first rinse is completed, the conductivity d4 is detected, wherein the conductivity d3′ before the start of rinsing is equivalent to the conductivity d3 at the end of washing in the previous text, and the control method in the rinsing program in the whole washing process is executed, and the specific control process is the same and will not be repeated.

[0135] The controller of the aforementioned clothes processing device has the aforementioned control method pre-stored therein, and the rinsing control method and the steam washing control method can be preset in the controller, or both control methods can be set at the same time, without any restrictions or requirements. These two control methods are also applicable to any existing or future clothes processing device.

[0136] Furthermore, the above text takes a drum washing machine as an example to introduce the specific structure of the clothing processing equipment provided by the present invention. In actual applications, any related equipment such as a drum washing machine, a pulsator washing machine, a shoe washing machine, a washer-dryer, etc. can be provided with a circulation system as described above, and the equipment can be modified accordingly to realize the function of steam washing and high-temperature cleaning using the circulation system.

[0137] In summary, the control method and the clothes processing device provided by the present invention have the following beneficial effects compared with the prior art:

[0138] 1. Directly use the circulating water tank to replace the existing water heater and related control components, so as to achieve the ideal washing and care effect without increasing too much cost;

[0139] 2. The water outlet pipe (steam pipe) of the circulation system is set above the washing water surface, spraying hot water or high-temperature steam into the washing drum, so that the steam can directly act on the clothes, which can significantly improve the sterilization, mite removal, wrinkle removal and cleaning effects, improve energy utilization, and greatly shorten the time of the entire washing process;

[0140] 3. It can cooperate with the drying system and software algorithm to accurately control the amount of steam and the temperature of steam acting on clothes, and perform reasonable and accurate control for different materials;

[0141] 4. The water level detection probe can be used to monitor the conductivity of washing water. The content of detergent can be obtained through the change of conductivity, so that the number of rinses or the amount of rinse water can be appropriately increased or decreased, which improves the washing and care effect, protects clothes, and meets the high-quality needs of users;

[0142] 5. Modular design, good versatility, and further reduce costs. By equipping with an independent controller and adopting a universal Bus method, it can be suitable for different models. At the same time, the outer cylinder structure design can be simplified by eliminating the heating system and related control components of the original model.

[0143] 6. The original water heating tank can be eliminated, and the water utilization rate is further improved.

[0144] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. A control method for a clothes processing device, characterized in that: When entering the high-temperature washing or steam washing program, the controller controls the heating device to heat the water in the circulating water tank or heat it to generate steam, and transports the high-temperature washing water or high-temperature steam to the washing tub through the circulating water outlet pipe.

2. A control method for a clothes processing device according to claim 1, characterized in that: When entering the steam cleaning program, the controller first controls the drainage pump to drain the residual water in the circulating water tank and enter a certain amount of clean water, and then starts heating to generate steam.

3. The control method of a clothes processing device according to claim 1, characterized in that: The amount of steam required for steam washing is determined according to the weight of the clothes and / or the volume of the washing tub, and the quantitative water inlet into the circulating water tank is controlled according to the amount of steam.

4. A control method for a clothes processing device according to claim 3, characterized in that: When the maximum water inflow of the circulating water tank is less than the total water inflow corresponding to the required steam volume this time, during the steam delivery process, when it is detected that the circulating water tank is short of water, the heating is stopped and water is re-injected; or when the maximum water inflow of the circulating water tank is less than the total water inflow corresponding to the required steam volume this time, the total water inflow is evenly divided into n water inflows, each water inflow is less than or equal to the maximum water inflow of the circulating water tank, and steam is generated after each water inflow. When it is detected that the circulating water tank is short of water, the heating is stopped and water is re-injected; or when the maximum water inflow of the circulating water tank is less than the total water inflow corresponding to the required steam volume this time, water is first injected into the circulating water tank to the maximum water inflow. When the water level in the circulating water tank drops to a predetermined value, water is continuously replenished at a predetermined speed until the total water inflow is reached.

5. A control method for a clothes processing device according to any one of claims 1 to 4, characterized in that: During the washing process, the circulation pump is started, and the washing water in the washing tub enters the circulating water tank. The controller controls the rinsing program according to the change in conductivity in the circulating water tank before and after washing and / or before and after rinsing.

6. A method for controlling a clothes processing device according to claim 5, characterized in that: When the difference between the conductivity after cleaning and the conductivity after the first rinsing is less than a first preset value, an additional rinsing process is added after the normal rinsing program is completed.

7. A control method for a clothes processing device according to claim 6, characterized in that: The circuit detects and determines whether the difference between the conductivity after the cleaning process and the conductivity after the additional rinsing process is less than a second preset value. If not, a rinsing process is added again. If so, the rinsing program ends.

8. A control method for a clothes processing device according to claim 7, characterized in that: When the total number of rinses is greater than the preset value, the rinse program ends.

9. A control method for a clothes processing device according to claims 1 to 8, characterized in that: A conductivity difference-rinsing water volume compensation value correspondence table is preset in the controller. When the difference between the conductivity value after cleaning and the conductivity value after the first rinsing is less than the first preset value, the corresponding compensation value is selected in the correspondence table and the water intake of the next rinsing process is controlled.

10. A clothes processing device, comprising a washing drum, a circulation system and a controller, characterized in that: The circulation system includes a circulating water tank connected to the washing tub, a heating device is arranged in the circulating water tank, and the circulating pipelines of the circulating water tank are connected to the washing tub to transport circulating washing water, high-temperature steam and / or high-temperature washing water into the washing tub. The controller has a built-in control method as described in any one of claims 1 to 9.

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