A control method of a drum-type washing machine and a drum-type washing machine

Abstract

The embodiment of the application discloses a control method of a drum washing machine and the drum washing machine. The control method of the drum washing machine comprises the following steps: obtaining current temperature information, wherein the current temperature information comprises drum washing machine ambient temperature information and / or weather temperature information; determining whether the current temperature information is lower than an icing determination temperature; if yes, determining whether a drain pump of the drum washing machine is currently in an icing state; if yes, determining a deicing method according to the icing state and deicing the drum washing machine. The control method provided by the embodiment of the application firstly obtains current temperature information, compares the obtained current temperature information with an icing determination temperature, and then determines the icing state of the drain pump, so that the drum washing machine can be accurately determined in the current state without being affected by external factors, the drum washing machine is prevented from being affected by ambient and weather temperatures, and the use experience of a user is improved.

Description

Technical Field

[0001] This invention relates to the field of washing machine technology, and more particularly to a control method for a drum washing machine and a drum washing machine. Background Technology

[0002] Currently, temperatures in southern regions may drop below zero during winter. Due to the large number of households with open balconies in the south, water pipes in homes may freeze in cold weather, especially for outdoor water-using equipment placed on balconies or terraces, where the drain pipes may also freeze. Summary of the Invention

[0003] In view of this, embodiments of the present invention provide a control method for a drum washing machine and a drum washing machine, so as to enable the drum washing machine to be unaffected by external factors, accurately judge the current state of the drum washing machine, and improve the user experience.

[0004] In a first aspect, embodiments of the present invention provide a control method for a drum washing machine, the method comprising:

[0005] Obtain current temperature information, which includes ambient temperature information of the drum washing machine and / or weather temperature information;

[0006] Determine whether the current temperature is lower than the freezing temperature;

[0007] If so, determine whether the drain pump of the drum washing machine is currently frozen;

[0008] If so, then determine the de-icing method based on the icing state and de-ic the drum washing machine.

[0009] Secondly, embodiments of the present invention provide a control device for a drum washing machine, the device comprising:

[0010] The current temperature information acquisition module is used to acquire current temperature information, which includes ambient temperature information of the drum washing machine and / or weather temperature information.

[0011] The temperature information judgment module is used to determine whether the current temperature information is lower than the freezing judgment temperature;

[0012] The defrosting module is used to determine a defrosting method and perform defrosting when it is determined that the drain pump of the drum washing machine is currently in an icing state.

[0013] Thirdly, embodiments of the present invention provide a drum washing machine, comprising:

[0014] At least one processor; and

[0015] A memory that is communicatively connected to the at least one processor;

[0016] The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the control method described in any of the first aspects.

[0017] This invention provides a control method for a drum washing machine. First, it acquires current temperature information, including ambient temperature and / or weather temperature. Second, it compares the acquired current temperature information with the freezing judgment temperature. If the current temperature is lower than the freezing judgment temperature, it determines that the drain pump is in a freezing state. This ensures that the drum washing machine is not affected by external factors, accurately judges the current state of the drum washing machine, avoids the influence of ambient and weather temperatures on the drum washing machine, and improves the user experience. Attached Figure Description

[0018] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the structure of a drum washing machine provided in Embodiment 1 of the present invention;

[0020] Figure 2 This is a flowchart of a control method for a drum washing machine provided in Embodiment 1 of the present invention;

[0021] Figure 3 This is a flowchart of a control method for a drum washing machine provided in Embodiment 2 of the present invention;

[0022] Figure 4 This is a schematic diagram of an ice-covered state of a drum washing machine according to Embodiment 2 of the present invention;

[0023] Figure 5 This is a flowchart of a control method for a drum washing machine provided in Embodiment 3 of the present invention;

[0024] Figure 6 This is a flowchart of a control method for a drum washing machine provided in Embodiment 4 of the present invention;

[0025] Figure 7 This is a flowchart of a control method for a drum washing machine provided in Embodiment 5 of the present invention;

[0026] Figure 8 This is a flowchart of a control method for a drum washing machine provided in Embodiment Six of the present invention;

[0027] Figure 9This is a schematic diagram of the structure of a control device for a drum washing machine provided in Embodiment 7 of the present invention;

[0028] Figure 10 This is a schematic diagram of the structure of a drum washing machine provided in Embodiment 8 of the present invention. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be fully described below with reference to the accompanying drawings in the embodiments of this invention, through specific implementation methods. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort fall within the protection scope of this invention.

[0030] Example 1

[0031] Figure 1 This is a schematic diagram of the structure of a drum washing machine provided in Embodiment 1 of the present invention. Figure 2 This is a flowchart of a control method for a drum washing machine according to Embodiment 1 of the present invention. This embodiment is applicable to the determination of icing during drainage in a drum washing machine. The method can be executed by the control device of the drum washing machine in this embodiment of the invention. This device can be implemented by software and / or hardware, and can be integrated into a device that can provide icing state determination, typically integrated into a drum washing machine. The method specifically includes the following steps:

[0032] S110, Obtain current temperature information.

[0033] The drum washing machine acquires current temperature information, which may include the ambient temperature or the current weather temperature. For example, in southern regions, drum washing machines are typically located on balconies or terraces, where the ambient temperature is equivalent to the real-time weather temperature. Specifically, drum washing machines are generally top-loading machines. Top-loading systems tend to leave rinse water in the drain pipe, which is susceptible to environmental factors such as freezing at low temperatures. This can range from affecting the washing machine's performance to causing drainage problems or even damaging the drain pump. Therefore, acquiring real-time temperature information helps prevent the drum washing machine from being affected by environmental factors.

[0034] For example, when the current temperature information is ambient temperature, the drum washing machine can directly obtain the current temperature information provided by the internet, such as a cloud server, through its internal communication module. Alternatively, the drum washing machine's internal communication module can communicate with smart devices such as mobile phones and tablets, using connection methods such as Wi-Fi or Bluetooth, and transmit the current temperature information to the drum washing machine through a client on the smart device. Furthermore, when the current temperature information is ambient temperature, the drum washing machine can obtain the current temperature information through an internally installed temperature sensor. This temperature sensor can also be independently installed near the washing machine and directly or indirectly communicated with it. This embodiment of the invention does not specifically limit the method of obtaining the current temperature information.

[0035] S120. Determine if the current temperature is lower than the freezing temperature.

[0036] The freezing judgment temperature is the temperature at which a liquid may freeze; that is, it is the critical value at which a liquid freezes. Below this temperature, the liquid is likely to freeze, while above or equal to it, it will not freeze. Specifically, if the current temperature of the drum washing machine is lower than the freezing judgment temperature, the residual rinse water in the drain pipe is prone to freezing, potentially causing drainage problems and preventing the drum washing machine from operating normally. Therefore, after obtaining the current temperature information, the drum washing machine determines whether the current temperature is lower than the freezing judgment temperature, i.e., it preliminarily determines whether the drum washing machine is likely to freeze. For example, if the current temperature is lower than the freezing judgment temperature, it indicates a potential risk of freezing, and step S130 is executed; if the current temperature is not lower than the freezing judgment temperature, it indicates no risk of freezing, and step S140 is executed.

[0037] Among them, the S140 drum washing machine is operating normally.

[0038] Optionally, the temperature setting for determining freezing occurs at different times.

[0039] For example, the setting for the freezing judgment temperature can differ at different times of day, such as evening or early morning. Generally, nighttime temperatures are lower than daytime temperatures. If the same freezing judgment temperature is used in the environment where the washing machine operates after both night and day, there is a risk of freezing even in the early morning when the temperature is higher than the freezing judgment temperature. Therefore, the freezing judgment temperature for the washing machine in the early morning can be set lower than that in the evening. Setting different freezing judgment temperatures at different times ensures accurate matching of the current temperature information with the freezing judgment temperature. For example, a freezing judgment temperature of 5°C can be used in the early morning, while 0°C can be used in the evening or at night. For instance, setting 5°C is used because ice crystals already exist in water below 4°C or close to 0°C, so residual rinse water at this temperature risks freezing after vibration. Furthermore, the ambient temperature of the drum washing machine in the early morning has been lower than the overnight temperature, and the ambient temperature in the evening has been higher than the daytime temperature. Therefore, the freezing judgment temperature in the early morning is higher than the freezing judgment temperature in the evening. That is, the freezing judgment temperature is set differently based on different time periods. However, the different time periods mentioned in the embodiments of the present invention are not limited to early morning and evening.

[0040] S130. Determine if the drain pump of the drum washing machine is currently frozen.

[0041] In this design, the drain pump of the drum washing machine provides kinetic energy to ensure that the liquid after washing is discharged from the machine. For example, see reference... Figure 1 As shown, the drum washing machine 1 includes a door 100, a casing 200, a drum 300, a drain pump 400, and a drain pipe 500. The drain pipe 500 also includes a drain bend 510. The drum washing machine 1 is installed on the ground 2. The drain pipe 500 of the drum washing machine 1 is connected to the sewer 3 to drain the rinse water into the sewer 3. The drum washing machine 1 is a top-draining washing machine, meaning that the drain pipe 500 drains upwards. It is easy for some rinse water to remain in the drain pipe 500. If the remaining rinse water freezes, it will cause the drain pump 500 to be in a frozen state, causing the drum washing machine 1 to malfunction. At the same time, the drain bend 510, while preventing the odor from the sewer 3 from flowing back into the drum washing machine 1, will inevitably leave some rinse water, which also poses a risk of freezing.

[0042] Specifically, when the current temperature is lower than the freezing detection temperature, the drum washing machine is at risk of freezing, and it is necessary to further determine whether the drain pump is currently in a frozen state. If it is in a frozen state, proceed to S150; otherwise, proceed to S140.

[0043] S150. Determine the de-icing method based on the icing state and de-ic the drum washing machine.

[0044] Depending on various environmental factors, drum washing machines can maintain different icing states, such as fully iced, partially iced, slightly iced, and non-iced. They are equipped with multiple programs that can execute various defrosting methods, allowing for different defrosting techniques based on the specific icing state. This ensures the normal use and operation of the washing machine and enhances the user experience.

[0045] This invention provides a control method for a drum washing machine. First, it acquires current temperature information, including ambient temperature and / or weather temperature. Second, it compares the acquired current temperature information with the freezing judgment temperature. If the current temperature is lower than the freezing judgment temperature, it determines that the drain pump is in a freezing state. This ensures that the drum washing machine is not affected by external factors, accurately judges the current state of the drum washing machine, avoids the influence of ambient and weather temperatures on the drum washing machine, and improves the user experience.

[0046] Example 2

[0047] Figure 3 This is a flowchart of a control method for a drum washing machine provided in Embodiment 2 of the present invention. Figure 4 This is a schematic diagram of the icing state of a drum washing machine according to Embodiment 2 of the present invention, for reference. Figure 1 , Figure 3 and Figure 4 As shown, this second embodiment refines the above embodiment, specifically detailing how to determine whether the drain pump of the drum washing machine is currently frozen. In this embodiment, the method specifically includes the following steps:

[0048] S210, Obtain current temperature information.

[0049] S220. Determine if the current temperature is lower than the freezing temperature.

[0050] For example, if the current temperature information is lower than the freezing judgment temperature, it means that the drum washing machine may be at risk of freezing, and S230 is executed; if the current temperature information is not lower than the freezing judgment temperature, it means that the drum washing machine is not at risk of freezing, and S240 is executed.

[0051] Among them, the S240 drum washing machine is operating normally.

[0052] S230. The starting current and the first running current of the first drive motor are obtained within the first preset time interval, respectively.

[0053] For example, refer to Figure 1 As shown, the drainage pump 400 includes an impeller (not specifically shown in the figure) and a first drive motor 410 fixedly connected to the impeller. Figure 1The connection method is not specifically shown. The impeller of the drain pump 400 is driven by the first drive motor 410 to ensure that the rinsing water is discharged into the drain pipe 500 and to ensure the normal washing operation of the drum washing machine 1.

[0054] Specifically, the drum washing machine acquires the starting current of the first drive motor of the drain pump when it starts, and acquires the first operating current when the first drive motor is running. By comparing the starting current and the first operating current, the drum washing machine can determine the operating status of the first drive motor, and based on the operating status of the first drive motor, determine the operating status of the drain pump, and thus determine the freezing status of the drain pump. Furthermore, the starting current and the first operating current are acquired within a preset time interval; that is, the drum washing machine acquires the starting current and then acquires the first operating current after a preset time interval. For example, the first preset time interval can be 1 second to 3 seconds, such as 1 second. Figure 4 As shown, the starting current Ia is obtained at time T1 (T1 = 0, that is, time T1 is the instant when the first drive motor starts), and the first operating current Ib is obtained at time T2. There can be a 1s interval between T1 and T2. The specific value of the first preset time interval is not specifically limited in this embodiment of the invention.

[0055] S250. When the starting current is equal to the first operating current, it is determined that the drain pump of the drum washing machine is currently in a completely frozen state.

[0056] Specifically, when the drain pump of a drum washing machine drains water, the first drive motor, which is fixedly connected to the drain pump impeller, starts running. Under normal circumstances, the starting current of the first drive motor connected to the drain pump is relatively large when it starts, but the current gradually decreases as the first drive motor runs; that is, the starting current should be greater than the initial operating current. For example, refer to... Figure 4 As shown, when the starting current Ia equals the first operating current Ib, that is... Figure 4 The curve 'a' indicates that the drainage pump is currently completely frozen and cannot operate. The first drive motor continues to run at the starting current Ia, posing a risk of the drive motor burning out.

[0057] Specifically, by monitoring the starting current and determining that the drain pump of the drum washing machine is completely frozen when it equals the first operating current, step S280 is executed to determine the defrosting method based on the freezing status and defrost the drum washing machine. This ensures the normal and safe operation of the drum washing machine and improves the user experience.

[0058] S260. When the starting current is higher than the first operating current, and the operating current is equal to the normal operating current of the drum washing machine, it is determined that the drain pump of the drum washing machine is currently in a non-icing state.

[0059] Specifically, when the drain pump of a drum washing machine drains water, the first drive motor, which is fixedly connected to the drain pump impeller, starts running. Under normal circumstances, the starting current is relatively large when the first drive motor connected to the drain pump starts, but as the first drive motor runs, the current gradually decreases. That is, the starting current should be greater than the initial operating current. Simultaneously, when the initial operating current equals the normal operating current of the drum washing machine, it indicates that the drum washing machine is currently in a normal state, meaning the drain pump is not frozen. For example, refer to... Figure 4 As shown, I represents the current of the drive motor, and T represents the time when the drive motor current is collected. When the starting current Ia is greater than the first operating current Ib, and the first operating current Ib is equal to the normal operating current In, that is... Figure 4 The C-curve indicates that the drainage pump is currently in a non-icing state and is operating normally.

[0060] Furthermore, the drain pipe of the drum washing machine also includes a drain bend. If the drain bend is frozen when the drain pump determines that it is not frozen, it will still affect the washing and rinsing water discharge of the drum washing machine. That is, after the first drive motor has been running for a period of time, its second operating current is collected again.

[0061] Optionally, S261 is executed to obtain the second operating current every second preset time interval.

[0062] S262. When the second operating current is less than the normal operating current, it is determined that the drain bend of the drum washing machine is currently in a non-icing state, and then S240 is executed.

[0063] S263. When the second operating current is greater than the normal operating current, it is determined that the drain bend of the drum washing machine is currently frozen, and then S280 is executed.

[0064] Specifically, if the second operating current equals the normal operating current, it indicates that the drainage bend is not frozen; if the second operating current is greater than the normal operating current, it indicates that the drainage bend is frozen, affecting the drainage pump's drainage effect and causing abnormal operation of the first drive motor. The second preset time interval can be 1 to 3 seconds, for example, 1 second. (Reference) Figure 4 As shown, there is a second preset time interval between T2 and T3. At time T3, the second operating current Ic of the first drive motor is further collected. If Ic is equal to In, it is curve c in the figure, which proves that the drum washing machine has no drainage fault. If Ic is greater than In, it is curve d in the figure, which proves that the drum washing machine is still in an icing state.

[0065] S270. When the starting current is higher than the running current, and the running current is greater than the normal operating current, it is determined that the drain pump of the drum washing machine is currently in a semi-frozen state.

[0066] Specifically, when the drain pump of a drum washing machine drains water, the first drive motor, which is fixedly connected to the drain pump impeller, starts running. Under normal circumstances, the starting current of the first drive motor connected to the drain pump is relatively large when it starts, but the current gradually decreases as the first drive motor runs, meaning the starting current should be greater than the running current. However, if the running current is greater than the normal current, it indicates that the drain pump has slight icing, and the first drive motor cannot operate normally.

[0067] For example, refer to Figure 4 As shown, when the starting current Ia is greater than the operating current Ib, and simultaneously the operating current Ib is greater than the normal operating current In, refer to... Figure 4 The middle curve (b) indicates that the drainage pump is currently in a semi-frozen state and cannot operate fully but can operate slightly. Timely de-icing can prevent the first drive motor from burning out.

[0068] Specifically, if the starting current is greater than the operating current, and the operating current is greater than the normal operating current, it is determined that the drain pump of the drum washing machine is currently in a semi-frozen state. Then, step S280 is executed to determine the defrosting method based on the freezing state and defrost the drum washing machine. This ensures the normal and safe operation of the drum washing machine and improves the user experience.

[0069] In summary, by determining the starting and running current of the drive motor, the current icing state of the drain pump can be obtained. Based on the icing state, a defrosting method can be determined and the drum washing machine can be defrosted. This ensures the normal and safe operation of the drum washing machine and improves the user experience.

[0070] Example 3

[0071] Figure 5 This is a flowchart of a control method for a drum washing machine provided in Embodiment 3 of the present invention, referred to... Figure 1 and Figure 5 As shown, this third embodiment refines the above embodiments, specifically detailing how to determine the de-icing method based on the icing state and de-ic the drum washing machine. In this embodiment, the method specifically includes the following steps:

[0072] S310, Obtain current temperature information.

[0073] S320: Determine if the current temperature is lower than the freezing temperature.

[0074] For example, if the current temperature information is lower than the freezing judgment temperature, it means that the drum washing machine may be at risk of freezing, and S330 is executed; if the current temperature information is not lower than the freezing judgment temperature, it means that the drum washing machine is not at risk of freezing, and S340 is executed.

[0075] Among them, the S340 and drum washing machines are operating normally.

[0076] S330: Determine if the drain pump of the drum washing machine is currently frozen.

[0077] Specifically, when the current temperature is lower than the freezing detection temperature, the drum washing machine is at risk of freezing. Further checks are needed to determine if the drain pump is currently frozen. If it is frozen, proceed to step S360; otherwise, proceed to step S340.

[0078] S350: Outputs the first control command based on the freezing state to control the injection of room temperature tap water.

[0079] For example, refer to Figure 1 As shown, the drum washing machine 1 includes a drum 300 and a second drive motor 600. The drum 300 includes an outer drum 310 and an inner drum 320. The second drive motor 600 is fixedly connected to the inner drum end 20 and is used to drive the inner drum 320 to rotate. The water outlet pipe of the outer drum 310 is connected to a drain pump 400 to drain the rinsing water. Clothes to be washed are placed in the inner drum 320, and tap water mixed with detergent is added. The second drive motor 600 then drives the inner drum 320 to rotate, thus enabling the drum washing machine 1 to wash the clothes.

[0080] In this invention, the drum washing machine performs a defrosting process when it determines that the drain pump is currently frozen, thus enabling the normal operation of the drum washing machine. The drum washing machine outputs a first control command, which, based on this command, controls the injection of room-temperature tap water into the inner drum to melt the ice at the drain pump. Specifically, room-temperature tap water is untreated water transported through the tap water pipes. For example, the temperature range of room-temperature tap water is generally 15°C to 25°C. Compared to hotter water, room-temperature tap water cools down more slowly upon contact with ice, resulting in more efficient ice melting. The ice-water interface temperature is 0°C, which facilitates rapid ice melting. This embodiment of the invention does not limit the specific temperature value of the room-temperature tap water.

[0081] S360 outputs a rotation control command to the second drive motor to control the second drive motor to drive the inner cylinder to rotate.

[0082] Specifically, after room temperature tap water is injected into the inner drum of the drum washing machine, the machine outputs a rotation control command to control the second drive motor to rotate the inner drum. For example, when the drain pump is frozen, injecting room temperature tap water and controlling the rotation of the inner drum via the second drive motor can disturb the water at the drain pump, moving the freshly melted ice water away from the ice-water interface, making the overall water temperature more uniform, and allowing for faster ice melting.

[0083] In summary, when the drain pump of a drum washing machine is frozen, injecting room-temperature tap water into the inner drum and rotating the drum agitates the water at the drain pump, moving the freshly melted ice water away from the ice-water interface. This allows the overall water temperature to become more uniform, resulting in faster ice melting. This ensures effective defrosting, prevents the washing machine from being affected by environmental and weather temperatures, and improves the user experience.

[0084] Example 4

[0085] Figure 6 This is a flowchart of a control method for a drum washing machine provided in Embodiment 4 of the present invention, referred to... Figure 1 and Figure 6 As shown, this fourth embodiment refines the above embodiments, specifically detailing how to determine the de-icing method based on the icing state and de-ic the drum washing machine. In this embodiment, the method specifically includes the following steps:

[0086] S410, Obtain current temperature information.

[0087] S420: Determine if the current temperature is lower than the freezing temperature.

[0088] For example, if the current temperature information is lower than the freezing judgment temperature, it means that the drum washing machine may be at risk of freezing, and S430 is executed; if the current temperature information is not lower than the freezing judgment temperature, it means that the drum washing machine is not at risk of freezing, and S440 is executed.

[0089] Among them, the S440 and drum washing machines are operating normally.

[0090] S430: Determine if the drain pump of the drum washing machine is currently frozen.

[0091] Specifically, when the current temperature is lower than the freezing detection temperature, the drum washing machine is at risk of freezing. Further checks are needed to determine if the drain pump is currently frozen. If it is frozen, proceed to step S460; otherwise, proceed to step S440.

[0092] S450: Output a second control command based on the freezing state to control the injection of defrosting agent.

[0093] For example, refer to Figure 1As shown, the drum washing machine 1 includes a drum 300 and a second drive motor 600. The drum 300 includes an outer drum 310 and an inner drum 320. The second drive motor 600 is fixedly connected to the inner drum end 20 and is used to drive the inner drum 320 to rotate. Clothes to be washed are placed into the inner drum 320, and tap water mixed with detergent is added. The second drive motor 600 then drives the inner drum 320 to rotate, thus enabling the drum washing machine 1 to wash the clothes.

[0094] In this invention, the drum washing machine performs a defrosting process when it determines that the drain pump is frozen, thus enabling normal operation of the washing machine. The drum washing machine outputs a second control command, which, based on this command, controls the injection of defrosting agent into the inner drum. The defrosting agent has a freezing point lower than that of water, which helps melt frozen liquids. Therefore, the defrosting agent injected into the inner drum flows to the drain pump and comes into contact with the ice, effectively dissolving the ice there. For example, the defrosting agent includes detergent and / or brine; the type of defrosting agent is not specifically limited in this embodiment. The drum washing machine is generally made of plastic or stainless steel, which is not corroded by brine. Furthermore, when the defrosting agent is brine, it also helps to fix the color of the clothes being washed, preventing color bleeding between different colors and improving the user experience.

[0095] For example, when the drain pump of a drum washing machine is in a frozen state, there are different degrees of icing. When the icing degree of the drain pump is relatively light, refer to... Figure 5 As shown, the drum washing machine can inject room temperature tap water via a first control command and control the second drive motor to rotate the inner drum according to a rotation control command. Further, referring to Figure 6, when the drain pump is severely frozen, the drum washing machine outputs a second control command to inject a defrosting agent into the inner drum. This defrosting agent can be detergent, which cleans clothes and also defrosts, meaning the drum washing machine does not need additional defrosting agent. When the drain pump is extremely frozen, the drum washing machine outputs a second control command to inject a defrosting agent into the inner drum. This defrosting agent can be brine, with salt having a better ice-melting effect, or the defrosting agent can be both detergent and brine, both ensuring rapid defrosting and meeting the normal operation requirements of the drum washing machine.

[0096] In summary, when the drain pump of a drum washing machine is frozen, injecting defrost into the inner drum can melt the ice more quickly. This ensures effective defrosting, prevents the washing machine from being affected by environmental and weather temperatures, and improves the user experience.

[0097] Example 5

[0098] Figure 7 This is a flowchart of a control method for a drum washing machine provided in Embodiment 5 of the present invention, referred to... Figure 7 As shown, this fifth embodiment refines the above embodiments, specifically detailing how to determine the de-icing method based on the icing state and de-ic the drum washing machine, and further includes the following steps:

[0099] S510, Obtain current temperature information.

[0100] S520: Determine if the current temperature is lower than the freezing temperature.

[0101] For example, if the current temperature information is lower than the freezing judgment temperature, it means that the drum washing machine may be at risk of freezing, and S530 is executed; if the current temperature information is not lower than the freezing judgment temperature, it means that the drum washing machine is not at risk of freezing, and S540 is executed.

[0102] Among them, the S540 and drum washing machines are operating normally.

[0103] S530: Determine if the drain pump of the drum washing machine is currently frozen.

[0104] Specifically, when the current temperature is lower than the freezing detection temperature, the drum washing machine is at risk of freezing. Further checks are needed to determine if the drain pump is currently frozen. If it is frozen, proceed to step S550; otherwise, proceed to step S540.

[0105] S550. Determine the de-icing method based on the icing state and de-ic the drum washing machine.

[0106] S560, Secondary determination of whether the drainage pump is currently in an icing state.

[0107] Furthermore, to prevent incomplete ice removal from affecting the use of the drum washing machine, the machine performs a secondary judgment: determining whether the drain pump is currently frozen. For example, after the drum washing machine determines the defrosting method based on the ice condition and performs defrosting, if the ice at the drain pump is not completely removed, it will affect the operation of the first drive motor fixedly connected to the drain pump impeller, thus affecting the use of the drum washing machine.

[0108] Furthermore, if the second determination indicates that the drain pump is currently in a non-icing state, then S540 is executed; if the second determination indicates that the drain pump is currently in an icing state, then S570 is executed.

[0109] S570, De-icing is performed again based on the icing condition.

[0110] Depending on various environmental factors, drum washing machines can maintain different icing states, such as fully iced, partially iced, slightly iced, and non-iced. They are equipped with multiple programs that can execute various defrosting methods, allowing for different defrosting techniques based on the specific icing state. This ensures the normal use and operation of the washing machine and enhances the user experience.

[0111] In summary, performing a secondary check after the drum washing machine defrosts the drain pump serves as a safety precaution, further ensuring the defrosting effect of the drum washing machine, avoiding the impact of environmental and weather temperatures, and improving the user experience.

[0112] Example 6

[0113] Figure 8 This is a flowchart of a control method for a drum washing machine provided in Embodiment Six of the present invention, referred to... Figure 8 As shown, this sixth embodiment refines the above embodiment, specifically detailing how to determine whether the drain pump of the drum washing machine is currently frozen, and includes the following steps:

[0114] S610: Receive the trigger command from the de-icing judgment button, and initiate the judgment of the icing state based on the trigger command.

[0115] The drum washing machine also includes a defrost detection button. By touching this button, the washing machine outputs a trigger command and initiates the determination of the icing state. For example, the defrost detection button can be a button located on the drum washing machine, an option on the touchscreen, or an option triggered by voice instruction, etc. This embodiment of the invention does not impose specific limitations on this. In other words, users can directly determine the icing state of the drain pump based on their actual needs, ensuring that the drum washing machine is more user-friendly and has a wider range of applications.

[0116] S620: Obtain current temperature information.

[0117] S630: Determine if the current temperature is lower than the freezing temperature.

[0118] If yes, then execute S640; otherwise, execute S650.

[0119] The S650 drum washing machine is operating normally.

[0120] S640. Determine if the drain pump of the drum washing machine is currently frozen.

[0121] Specifically, if the object is frozen, execute S660; otherwise, execute S650.

[0122] In summary, the drum washing machine provided in this embodiment of the invention also includes a defrost judgment button, which allows users to directly determine the icing status of the drain pump. This makes the drum washing machine more user-friendly and applicable to a wider range of situations.

[0123] Example 7

[0124] Figure 9 This is a schematic diagram of the structure of a control device for a drum washing machine provided in Embodiment 7 of the present invention. The device is applicable to the situation of de-icing products with icing function judgment. The device can be implemented by software and / or hardware.

[0125] like Figure 9 As shown, the control device 10 of the drum washing machine includes: a current temperature information acquisition module 710, a temperature information judgment module 720, and a defrosting module 730.

[0126] The current temperature information acquisition module 710 is used to acquire current temperature information, and the temperature information includes ambient temperature information of the drum washing machine and / or weather temperature information.

[0127] Temperature information judgment module 720 is used to determine whether the current temperature is lower than the freezing judgment temperature;

[0128] The defrosting module 730 is used to determine the defrosting method and perform defrosting when it is determined that the drain pump of the drum washing machine is currently in an icing state.

[0129] In this embodiment, the control device of the drum washing machine first acquires the current temperature information through a current temperature information acquisition module; then, it determines whether the current temperature is lower than the freezing temperature through a temperature information judgment module; finally, it uses a defrosting module to determine the defrosting method and perform defrosting when the drain pump of the drum washing machine is determined to be in a frozen state. This ensures that the drum washing machine is not affected by external factors, accurately judges the current state of the drum washing machine, avoids the influence of environmental and weather temperatures on the drum washing machine, and improves the user experience.

[0130] Example 8

[0131] Figure 10 This is a schematic diagram of the structure of a drum washing machine provided in Embodiment 8 of the present invention, as shown below. Figure 10 As shown, the drum washing machine 1 includes: at least one processor 810; and a memory 820 communicatively connected to the at least one processor 810. Figure 10The example is illustrated by a processor 810; wherein, the memory 820 stores a computer program that can be executed by the at least one processor 810, the computer program being executed by the at least one processor 810 to enable the at least one processor 810 to perform the control method mentioned in any of the embodiments of the present invention.

[0132] The processor 810, memory 820, input device 830, and output device 840 in the drum washing machine 1 can be connected via a bus or other means. Figure 10 Taking the example of a connection between China and Israel via a bus.

[0133] The memory 820 in the drum washing machine 1 serves as a computer-readable storage medium, capable of storing one or more programs. These programs can be software programs, computer-executable programs, and modules, such as the program instructions / modules corresponding to the control method for the drum washing machine provided in the above embodiments of the present invention (e.g., attached...). Figure 9 The control device 10 of the drum washing machine includes: a current temperature information acquisition module 710, a temperature information judgment module 720, and a de-icing module 730. The processor 810 executes various functional applications and data processing of the terminal device by running software programs, instructions, and modules stored in the processor 810, thereby realizing the control method of the drum washing machine in the above method embodiment.

[0134] The memory 820 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the device. Furthermore, the memory 820 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 820 may further include memory remotely located relative to the memory 820, which can be connected to the device via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0135] The input device 830 can be used to receive input numerical or character information, and to generate key signal inputs related to user settings and function control of the device. The input device 830 may include indicator buttons on the drum washing machine 1, and the output device 840 may include display devices such as a display screen on the drum washing machine 1. This embodiment of the invention does not specifically limit these aspects.

[0136] Furthermore, when one or more programs included in the aforementioned device are executed by one or more processors 810, the program performs the following operations: acquires current temperature information, including ambient temperature information of the drum washing machine and / or weather temperature information; determines whether the current temperature information is lower than the freezing judgment temperature; if so, determines whether the drain pump of the drum washing machine is currently in a frozen state; if so, determines the de-icing method based on the freezing state and de-ices the drum washing machine.

[0137] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein. Features of various embodiments of the present invention can be partially or wholly coupled or combined with each other, and can cooperate and be technically driven in various ways. Various obvious changes, readjustments, combinations, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A control method for a drum washing machine, characterized in that, include: Obtain current temperature information, which includes ambient temperature information of the drum washing machine and / or weather temperature information; Determine whether the current temperature is lower than the freezing temperature; If so, determine whether the drain pump of the drum washing machine is currently frozen; If so, then determine the de-icing method based on the icing state and de-ic the drum washing machine; The drum washing machine includes a first drive motor, which is connected to the drain pump. Determining whether the drain pump of the drum washing machine is currently frozen includes: The starting current and the first operating current of the first drive motor are obtained respectively within the first preset time interval; When the starting current is equal to the first operating current, it is determined that the drain pump of the drum washing machine is currently in a completely frozen state. When the starting current is higher than the first operating current, and the first operating current is equal to the normal operating current of the drum washing machine, it is determined that the drain pump of the drum washing machine is currently in a non-icing state. When the starting current is higher than the first operating current, and the first operating current is greater than the normal operating current, it is determined that the drain pump of the drum washing machine is currently in a semi-frozen state.

2. The control method according to claim 1, characterized in that, The drum washing machine includes a drain pipe and a drain bend; When the starting current is higher than the operating current, and the operating current is equal to the normal operating current of the drum washing machine, after determining that the drain pump of the drum washing machine is currently in a non-icing state, the process further includes: The second operating current is acquired at every second preset time interval; When the second operating current is greater than the normal operating current, it is determined that the drain bend of the drum washing machine is currently in an icy state. When the second operating current is less than the normal operating current, it is determined that the drain bend of the drum washing machine is currently in a non-icing state.

3. The control method according to claim 1, characterized in that, The drum washing machine includes a drum and a second drive motor. The drum includes an inner drum and an outer drum. The inner drum is connected to the second drive motor, and the water outlet pipe of the outer drum is connected to the drain pump. Determining a de-icing method based on the icing state and de-icing the drum washing machine includes: Based on the freezing state, a first control command is output to control the injection of room temperature tap water; Output rotation control commands to the second drive motor to control the second drive motor to drive the inner cylinder to rotate.

4. The control method according to claim 1, characterized in that, The drum washing machine includes an inner drum and a second drive motor. The inner drum is connected to the second drive motor, and the water outlet pipe of the inner drum is connected to the drain pump. Determining a de-icing method based on the icing state and de-icing the drum washing machine includes: A second control command is output based on the freezing state to control the injection of a thawing agent, wherein the freezing temperature of the thawing agent is lower than that of water.

5. The control method according to claim 4, characterized in that, The thawing agent includes detergent and / or brine.

6. The control method according to claim 1, characterized in that, After determining the de-icing method based on the icing state and de-icing the drum washing machine, the process further includes: A second determination is made as to whether the drainage pump is currently in an icing state; If so, then de-icing will be performed again according to the described icing condition.

7. The control method according to claim 1, characterized in that, The drum washing machine includes a defrost detection button; Before obtaining the current temperature information, the following steps are also included: Receive the trigger command from the de-icing judgment button, and initiate the judgment of the icing state based on the trigger command.

8. The control method according to claim 1, characterized in that, The set value for the freezing judgment temperature is different in different time periods.

9. A drum washing machine, characterized in that, include: At least one processor; as well as A memory that is communicatively connected to the at least one processor; The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the control method according to any one of claims 1-8.

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