Dry burning prevention control system of clothes airing machine and clothes airing machine

Abstract

The utility model relates to an anti-dry-burning control system of a clothes airing machine and the clothes airing machine, and the anti-dry-burning control system of the clothes airing machine detects a zero-crossing level signal corresponding to a heating device through a zero-crossing detection module, enables a main control module to receive the zero-crossing level signal, and controls the drying function of the clothes airing machine according to the zero-crossing level signal and the drying function state of the clothes airing machine. Determining an operation type corresponding to the clothes airing machine; target operation corresponding to the operation type is executed for the fan, and an operation execution result is obtained; therefore, the corresponding target operation can be executed on the fan in combination with the zero-crossing level signal corresponding to the heating device and the drying function state of the clothes airing machine, the fan control accuracy is improved, the situation that the fan and the heating device cannot be normally matched, and consequently the heating device continuously burns in a dry mode is avoided, and the user experience is improved. The problem of dry burning risk existing in the PTC control mode of the clothes airing machine in the prior art is solved, and the dry burning risk of the clothes airing machine can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of clothes drying machines, and in particular to a clothes drying machine dry-burning prevention control system and clothes drying machine. BACKGROUND

[0002] With the development of society, the material consumption level of people in the current society is improved, and many people at home use intelligent electric clothes drying machines to dry clothes. In the common clothes drying machines on the market, an drying function is usually configured, which can not only dry the clothes faster, but also make the clothes more soft and comfortable.

[0003] In the traditional technology, the drying function of the clothes drying machine is usually heated by using a positive temperature coefficient (PTC) heating wire, and hot air is blown out by a fan to realize the drying function of the clothes. Specifically, the traditional PTC driving mode mainly controls the on-off of the mains 220V of the PTC through the relay of the main control board, so as to control whether the PTC works; the traditional blowing mode generally uses a 220V cross-flow fan or an axial flow fan, and the on-off of the mains 220V of the fan is controlled through the relay of the main control board, so as to control whether the fan works. Although the PTC and the fan can cooperate to play a drying role in the existing related technology, the PTC in the circuit will have the risk of spontaneous combustion, for example, the PTC abnormally starts in a non-working state, at this time the fan does not start, and the heat generated by the working PTC will continue to increase, causing the internal dry-burning temperature of the machine to continue to rise, so that the temperature of the clothes drying machine is higher than the ignition point of the machine shell material, causing the machine to catch fire, and when the PTC normally starts in a working state, if the fan abnormally operates at this time, it will also cause the problem of continuous dry-burning temperature rise in the machine; that is, the PTC control mode of the clothes drying machine in the existing related technology has the problem of dry-burning risk. SUMMARY

[0004] In order to solve the problem of dry-burning risk of the PTC control mode of the clothes drying machine in the existing related technology, the present application provides a clothes drying machine dry-burning prevention control system and clothes drying machine.

[0005] In a first aspect, the present application provides a clothes drying machine dry-burning prevention control system, comprising a zero-crossing detection module and a main control module; the clothes drying machine is provided with a fan and a heating device;

[0006] The zero-crossing detection module is connected to the heating device and is used to detect the zero-crossing level signal corresponding to the heating device;

[0007] The master control module is connected with a zero-crossing detection module, configured to receive a zero-crossing level signal, determine a running type corresponding to the clothes drying machine according to the zero-crossing level signal and a drying function state of the clothes drying machine, and perform a target operation corresponding to the running type on the fan to obtain an operation execution result.

[0008] Optionally, the master control module is configured to, in a case where the drying function state is a drying-off state, determine a heating self-starting type as the running type according to the zero-crossing level signal, and determine a start-fan operation corresponding to the heating self-starting type as the target operation, and perform the start-fan operation on the fan to obtain the operation execution result.

[0009] Optionally, the clothes drying machine further comprises a fan detection module, an output end of the fan detection module is electrically connected with a second input end of the master control module, and an input end of the fan detection module is electrically connected with a first output end of the master control module.

[0010] The fan detection module is configured to detect a fan detection signal corresponding to the fan, and output the fan detection signal to the second input end of the master control module.

[0011] The master control module is further configured to, in a case where the drying function state is a drying-on state, determine a heating starting type as the running type according to the zero-crossing level signal and the fan detection signal, and determine a fan detection operation corresponding to the heating starting type as the target operation, and perform the fan detection operation on the fan to obtain the operation execution result.

[0012] Optionally, the clothes drying machine further comprises:

[0013] The fan detection module is further configured to detect a fan state detection signal and a fan current detection signal corresponding to the fan.

[0014] The master control module is further configured to, in a case where the fan state detection signal is a normal fan state signal, determine whether the fan current detection signal belongs to a preset current range, and generate the operation execution result in a case where the fan current detection signal does not belong to the preset current range.

[0015] Optionally, the clothes drying machine further comprises an alarm module, an input end of the alarm module is electrically connected with a second output end of the master control module.

[0016] The master control module is further configured to, in a case where the operation execution result is an alarm result, output an alarm signal to the input end of the alarm module.

[0017] The alarm module is configured to perform an alarm operation according to the alarm signal.

[0018] Optionally, the alarm module comprises a network communication unit and / or a prompting unit;

[0019] The network communication unit is electrically connected with the main control module, and is configured to output alarm information to a preset client according to the alarm signal;

[0020] The input end of the prompting unit is electrically connected with the main control module, and is configured to output a prompting signal according to the alarm signal.

[0021] Optionally, the zero-crossing detection module comprises a relay and an optoelectronic coupler;

[0022] The power supply end of the heating device and the first end of the optoelectronic coupler are electrically connected to a live wire of a commercial power supply, and the relay is electrically connected in the line of the live wire of the commercial power supply; the relay and the fourth end of the optoelectronic coupler are further electrically connected with the main control module;

[0023] The relay is configured to be turned on or turned off under the control of the main control module, so that the heating device and the optoelectronic coupler are connected to or disconnected from the commercial power supply.

[0024] Optionally, the zero-crossing detection module further comprises a first diode;

[0025] The first end of the relay, the second end of the relay, the first end of the first diode, and the first end of the optoelectronic coupler are electrically connected to the live wire of the commercial power supply; the second end of the first diode and the second end of the optoelectronic coupler are electrically connected to a neutral wire of the commercial power supply; the third end of the optoelectronic coupler is electrically connected to a reference ground; the fourth end of the optoelectronic coupler is electrically connected to the first input end of the main control module; the first end of the relay is further electrically connected to the heating device; and the control end of the relay is electrically connected to the main control module.

[0026] Optionally, the fan detection module comprises a terminal unit and a sampling unit;

[0027] The first end of the terminal unit is electrically connected to a power input end; the second end of the terminal unit is electrically connected to the first output end of the main control module; the third end of the terminal unit is electrically connected to a fan state end of the main control module; the fourth end of the terminal unit is electrically connected to the first end of the sampling unit; and the second end of the sampling unit is electrically connected to a voltage collection end of the main control module; the first end, the second end, the third end, and the fourth end of the terminal unit are further electrically connected to the fan.

[0028] Optionally, the sampling unit comprises a sampling resistor, a first resistor, a first inductor, a first capacitor, a second capacitor, a second diode, and a third diode.

[0029] The first end of the sampling resistor, the first end of the first inductor, and the fourth end of the terminal unit are electrically connected; the second end of the first inductor, the first end of the first capacitor, the first end of the second capacitor, and the first end of the first resistor are electrically connected; the second end of the sampling resistor, the second end of the first capacitor, the second end of the second capacitor, and the reference ground are electrically connected; the second end of the first resistor, the first end of the second diode, the second end of the third diode, and the voltage collection end of the master control module are electrically connected; the first end of the third diode is electrically connected with the reference ground; and the second end of the second diode is electrically connected with the power input end.

[0030] In a second aspect, the present application provides a drying control method for a clothes drying machine, wherein the clothes drying machine is provided with a fan and a heating device, and the method comprises the following steps:

[0031] obtaining a zero-crossing level signal corresponding to the heating device and a drying function state of the clothes drying machine;

[0032] determining a running type corresponding to the clothes drying machine based on the zero-crossing level signal and the drying function state;

[0033] performing a target operation corresponding to the running type on the fan to obtain an operation execution result.

[0034] Optionally, the step of determining the running type corresponding to the clothes drying machine based on the zero-crossing level signal and the drying function state comprises:

[0035] in a case where the drying function state is a drying-off state, determining a heating self-starting type as the running type according to the zero-crossing level signal, and determining a start-fan operation corresponding to the heating self-starting type as the target operation;

[0036] in a case where the drying function state is a drying-on state, determining whether the zero-crossing level signal belongs to a preset first zero-crossing level signal;

[0037] in a case where the zero-crossing level signal belongs to the first zero-crossing level signal, obtaining a fan detection signal corresponding to the fan;

[0038] determining a heating starting type as the running type according to the zero-crossing level signal and the fan detection signal, and determining a fan detection operation corresponding to the heating starting type as the target operation.

[0039] Optionally, the target operation corresponding to the running type of the fan is performed to obtain an operation execution result, including:

[0040] In a case where the target operation is the fan detection operation, a fan state detection signal and a fan current detection signal are extracted from the fan detection signal;

[0041] In a case where the fan state detection signal is a fan state normal signal, it is determined whether a current value of the fan current detection signal is within a preset current range;

[0042] In a case where the current value of the fan current detection signal is not within the preset current range, an alarm signal is generated;

[0043] The operation execution result is generated according to the alarm signal.

[0044] In a third aspect, the present application provides an clothes drying machine, comprising the clothes drying machine dry-burn prevention control system of the first aspect.

[0045] In a fourth aspect, the present application provides an electronic device, characterized in that, comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory complete mutual communication through the communication bus;

[0046] The memory is used for storing a computer program;

[0047] The processor is used for executing the program stored on the memory, and realizes the clothes drying machine dry-burn prevention control method of any one of the second aspect.

[0048] In a fifth aspect, the present application provides a clothes drying machine, comprising the clothes drying machine dry-burn prevention control system of any one of the first aspect.

[0049] The clothes drying machine dry-burn prevention control system provided by the embodiments of the present application detects the zero-crossing level signal corresponding to the heating device through the zero-crossing detection module, so that the main control module receives the zero-crossing level signal, determines the running type corresponding to the clothes drying machine according to the zero-crossing level signal and the drying function state of the clothes drying machine, and performs the target operation corresponding to the running type on the fan to obtain the operation execution result. Therefore, the target operation corresponding to the fan can be performed in combination with the zero-crossing level signal corresponding to the heating device and the drying function state of the clothes drying machine, thereby improving the accuracy of the fan control, avoiding the situation that the heating device continuously dry-burns due to the failure of the fan and the heating device to normally cooperate, i.e., solving the dry-burn risk problem of the PTC control mode of the clothes drying machine in the prior art, and effectively reducing the dry-burn risk of the clothes drying machine. BRIEF DESCRIPTION OF DRAWINGS

[0050] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments consistent with the present application and, together with the description, further serve to explain the principles of the application.

[0051] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings required by the embodiments or the prior art description will be briefly introduced as follows. Obviously, for those skilled in the art, the other drawings can be obtained based on these drawings without any creative effort.

[0052] Figure 1 A detection schematic diagram of a dry-burning prevention control system of a clothes airing machine provided by the embodiment of the present application;

[0053] Figure 2 Another detection schematic diagram of a dry-burning prevention control system of a clothes airing machine provided by the embodiment of the present application;

[0054] Figure 3 Still another detection schematic diagram of a dry-burning prevention control system of a clothes airing machine provided by the embodiment of the present application;

[0055] Figure 4 Still another detection schematic diagram of a dry-burning prevention control system of a clothes airing machine provided by the embodiment of the present application;

[0056] Figure 5 A zero-crossing detection module circuit principle schematic diagram of a dry-burning prevention control system of a clothes airing machine provided by the embodiment of the present application;

[0057] Figure 6 A fan detection module circuit principle schematic diagram of a dry-burning prevention control system of a clothes airing machine provided by the embodiment of the present application;

[0058] Figure 7 A flow schematic diagram of a dry-burning prevention control method of a clothes airing machine provided by the embodiment of the present application;

[0059] Figure 8 Another flow schematic diagram of a dry-burning prevention control system of a clothes airing machine provided by the embodiment of the present application;

[0060] Figure 9 A structure schematic diagram of an electronic device provided by the embodiment of the present application.

[0061] Drawing identification:

[0062] 11, master control module; 12, zero-crossing detection module; 13, fan detection module; 131, terminal unit; 132, sampling unit; 14, alarm module; 141, prompt unit; 142, network communication unit; 21, heating device; 31, fan; J3, relay; ZD4, first diode; U6, optocoupler; R39, sampling resistor; L5, first inductor; R40, first resistor; EC8, first capacitor; C33, second capacitor; D7, second diode; D8, third diode; R78, second resistor; R79, third resistor; R77, fourth resistor; R80, fifth resistor; C55, third capacitor. DETAILED DESCRIPTION

[0063] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0064] Since the existing PTC driving mode is to control the on-off of the mains 220V of the PTC through the relay of the master control board to control whether the PTC starts to work, and the driving mode of the blower is to use the 220V cross-flow fan or axial flow fan to control the on-off of the mains 220V of the fan through the relay of the master control board to control whether the fan works, that is, the existing PTC and fan are controlled through the relay, and at least two risks exist in the process. One aspect is that the relay of the control fan and the PTC has a certain element failure rate. When the relay is damaged, the internal magnet of the relay will continuously attract, which will make the fan or the PTC in a continuously on or off working state. At this time, if the clothes drying machine is in a standby state, the PTC will be dry burning; when the machine is in a drying state, if the fan is in a continuously off state, the heat generated by the PTC cannot be blown out and discharged through the fan, and the PTC in the clothes drying machine continuously dry burns and heats. Another aspect is that the fan also has a certain probability of damage. For example, the fan does not work when the power supply voltage is supplied. When the machine is in a drying state, if the fan is damaged and does not rotate, the PTC will also continuously dry burn. The above-mentioned dry burning risk of the PTC of the clothes drying machine will make the clothes drying machine continuously dry burn and cause the temperature to rise, which may eventually lead to more serious accidents, such as damage to the clothes drying machine, fire, etc. That is, the PTC control mode of the clothes drying machine in the existing related technology has the problem of dry burning risk.

[0065] To solve the problem of dry burning risk of the PTC control mode of the clothes drying machine in the prior art, the clothes drying machine dry burning prevention control system and the clothes drying machine provided by the embodiment of the present application can detect the zero-crossing level signal corresponding to the heating device through the zero-crossing detection module, so that the main control module receives the zero-crossing level signal, determines the running type corresponding to the clothes drying machine according to the zero-crossing level signal and the drying function state of the clothes drying machine, and performs the target operation corresponding to the running type on the fan to obtain the operation execution result. Thus, the target operation corresponding to the heating device can be performed on the fan in combination with the zero-crossing level signal corresponding to the heating device and the drying function state of the clothes drying machine, thereby improving the accuracy of the fan control, avoiding the situation that the heating device continuously burns due to the failure of the fan and the heating device to cooperate normally, and solving the problem of dry burning risk of the PTC control mode of the clothes drying machine in the prior art, which can effectively reduce the dry burning risk of the clothes drying machine.

[0066] Figure 1 A flowchart of a clothes drying machine dry burning prevention control system is provided in the embodiment of the present application.

[0067] As shown in Figure 1 The embodiment of the present application provides a clothes drying machine dry burning prevention control system, which comprises a zero-crossing detection module 12 and a main control module 11. The output end of the zero-crossing detection module 12 is electrically connected to the first input end of the main control module 11. The clothes drying machine is provided with a fan 31 and a heating device 21.

[0068] The zero-crossing detection module 12 is configured to detect the zero-crossing level signal corresponding to the heating device 21.

[0069] The main control module 11 is configured to receive the zero-crossing level signal, determine the running type corresponding to the clothes drying machine according to the zero-crossing level signal and the drying function state of the clothes drying machine, and perform the target operation corresponding to the running type on the fan 31 to obtain the operation execution result.

[0070] The zero-crossing detection module 12 in the embodiment can detect whether the heating device 21 is started. The heating device 21 can be a device with heating function, such as PTC heating wire, heating pipe, resistance wire, etc. The zero-crossing detection module 12 in the embodiment can detect the zero-crossing level signal corresponding to the heating device 21. The zero-crossing level signal can represent the signal of detecting the zero point position in the alternating current waveform corresponding to the heating device 21. Since the heating device 21 is driven by alternating current, the zero-crossing level signal can be used to directly determine whether the heating device 21 is turned on.

[0071] The master control module 11 can receive the zero-crossing level signal, determine the running type corresponding to the clothes drying machine according to the zero-crossing level signal and the drying function state of the clothes drying machine, and execute the target operation corresponding to the running type on the fan 31 to obtain an operation execution result. The drying function state can represent the state of whether the drying function of the clothes drying machine is turned on, for example, the drying function state can be a drying-off state or a drying-on state. The drying-off state indicates that the drying function of the clothes drying machine is in an off state, and the drying-on state indicates that the drying function of the clothes drying machine is in an on state. The running type can represent the specific type of the current clothes drying machine running, for example, the running type can be a heating self-starting type or a heating starting type. The heating self-starting type can indicate that the heating device is abnormally started when the clothes drying machine is running, that is, the heating device is abnormally self-started and heated when the drying function of the clothes drying machine is off. The heating starting type can indicate that the heating device is normally started when the clothes drying machine is running, that is, the heating device is normally started and heated when the drying function of the clothes drying machine is on. The target operation corresponding to the running type can represent the preset operation corresponding to each running type, for example, the preset operation corresponding to the heating self-starting type is a start fan operation, or the preset operation corresponding to the heating starting type is a fan detection operation. Therefore, the fan 31 can be started in time for heat dissipation in the case of abnormal start of the heating device, and the fan 31 can be detected for normal operation in the case of normal start of the heating device, avoiding the situation that the fan 31 and the heating device cannot normally cooperate to cause the heating device to continuously dry and burn, that is, solving the problem of dry and burn risk of the PTC control mode of the clothes drying machine in the prior art, and effectively reducing the dry and burn risk of the clothes drying machine.

[0072] In an optional embodiment of the present application, the master control module 11 is configured to, in the case that the drying function state is a drying-off state, determine the heating self-starting type as the running type according to the zero-crossing level signal, and determine the start fan operation corresponding to the heating self-starting type as the target operation, and execute the start fan operation on the fan 31 to obtain an operation execution result.

[0073] In this embodiment, the main control module 11 can determine whether the heating device is started according to the zero-crossing level signal when the clothes drying machine is in the drying-off state, that is, the heating self-starting type is determined as the running type when the heating device is determined to be started through the zero-crossing level signal, and the starting fan operation corresponding to the heating self-starting type is determined as the target operation at this time; and the starting fan operation is performed on the fan 31 to obtain an operation execution result; wherein the starting fan operation can represent an operation for controlling the fan 31 to start, for example, when the clothes drying machine is in the drying-off state and the zero-crossing level signal indicates that the heating device 21 is turned on and started, a fan starting signal can be outputted, the fan starting signal is used to start the fan 31, and the operation execution result at this time is the result of whether the fan 31 is started; that is, it plays a role of controlling the fan 31 to switch the running state to start through the fan starting signal; and further, in the case of abnormal start of the heating device 21, the fan 31 can be started in time to prevent the heating device 21 of the clothes drying machine from continuous dry burning, thereby solving the problem of dry burning risk of the PTC control mode of the clothes drying machine in the prior art, and effectively reducing the dry burning risk of the clothes drying machine.

[0074] It should be noted that in the process of executing the starting fan operation on the fan and obtaining the operation execution result by the main control module 11, for example, in the process of outputting the fan starting signal according to the zero-crossing level signal, it can be determined whether the zero-crossing level signal belongs to the first zero-crossing level signal; wherein the first zero-crossing level signal can represent a signal with a zero-crossing level, that is, in the case that the zero-crossing level signal belongs to the first zero-crossing level signal, it indicates that the currently detected heating device 21 has an open state of alternating current driving; on the other hand, since the clothes drying machine is in the drying-off state at this time, that is, the heating device 21 is in the case of abnormal start when the clothes drying machine is in the drying-off state; thereby generating and outputting the fan starting signal, and further starting the fan 31 through the fan starting signal, so as to achieve the purpose of starting the fan 31 in time to prevent the heating device 21 of the clothes drying machine from continuous dry burning in the case of abnormal start of the heating device 21, solve the problem of dry burning risk of the PTC control mode of the clothes drying machine in the prior art, and effectively reduce the dry burning risk of the clothes drying machine.

[0075] For example, Figure 2As shown, in an optional embodiment of the present application, the clothes drying machine anti-dry burning control system can further include a fan detection module 13, the output end of the fan detection module 13 is electrically connected with the second input end of the main control module 11, and the input end of the fan detection module 13 is electrically connected with the first output end of the main control module 11; the fan detection module 13 is used for detecting a fan detection signal corresponding to the fan 31 and outputting the fan detection signal to the second input end of the main control module 11; the main control module 11 is further used for, in the case that the drying function state is in the drying opening state, determining the heating start type as the running type according to the zero-crossing level signal and the fan detection signal, and determining the fan detection operation corresponding to the heating start type as the target operation; and performing the fan detection operation on the fan 31 to obtain an operation execution result.

[0076] The fan detection module 13 in the embodiment can be electrically connected with the fan 31 of the clothes drying machine, that is, the fan detection module 13 can detect a fan detection signal corresponding to the fan 31 and output the fan detection signal to the second input end of the main control module 11, wherein the fan detection signal can include one or more signals, which are not limited in the embodiment. In the case that the drying function state is in the drying opening state, the main control module 11 can determine the heating start type as the running type according to the received zero-crossing level signal and fan detection signal, and determine the fan detection operation corresponding to the heating start type as the target operation; and perform the fan detection operation on the fan 31 to obtain an operation execution result, wherein the fan detection operation can represent an operation of detecting whether the fan 31 is normally started, and the operation execution result can represent a fan detection result generated after checking the fan 31, the fan detection result can represent a fan normal result or a fan abnormal result, the fan normal result can represent a result that the fan 31 is normally started and runs, and the fan abnormal result can represent a result that the fan 31 runs abnormally; thereby the fan 31 can be detected in real time when the clothes drying machine starts the drying function, that is, the heater device 21 is normally started, which can timely detect the fan 31 to prevent the fan 31 from being abnormal after the heater device 21 of the clothes drying machine is normally started, thereby solving the problem of dry burning risk of the PTC control mode of the clothes drying machine in the prior art, and effectively reducing the dry burning risk of the clothes drying machine.

[0077] In an optional embodiment of the present application, the clothes drying machine anti-dry burning control system can further include: the fan detection module 13 is further used for detecting a fan state detection signal and a fan current detection signal corresponding to the fan 31; and the main control module 11 is further used for, in the case that the fan state detection signal is a fan state normal signal, determining whether the fan current detection signal belongs to a preset current range; and in the case that the fan current detection signal does not belong to the preset current range, generating a fan detection result and determining the fan detection result as the operation execution result.

[0078] The fan detection module 13 of the embodiment is also used to detect the fan state detection signal and the fan current detection signal corresponding to the fan 31, and can output the fan state detection signal and the fan current detection signal as the fan detection signal to the second input end of the main control module 11; so that the main control module 11 can extract the fan state detection signal and the fan current detection signal from the received fan detection signal, wherein the fan state detection signal can be a detection signal for indicating the running state of the fan 31, such as a fan state normal signal or a fan state abnormal signal, the fan state normal signal is a signal for indicating that the running state of the fan 31 is in a normal state, and the fan state abnormal signal is a signal for indicating that the running state of the fan 31 is in an abnormal state, and the fan current detection signal can be a signal for indicating the current value of the fan 31; so that the main control module 11 can include but is not limited to the following processes during the execution of the fan detection operation: judging whether the fan state detection signal is the fan state normal signal, when the fan state detection signal is the fan state abnormal signal, it indicates that the fan 31 is in an abnormal state and cannot be normally started, at this time, the fan abnormal prompt information can be output, which can include but is not limited to application pop-up prompt, buzzer prompt, warning light prompt, etc., which are not limited in the embodiment. When the fan state detection signal is the fan state normal signal, it indicates that the fan 31 has been normally started at this time, and then the current value of the fan current detection signal can be judged whether it is within the preset current range; wherein the preset current range represents the current range of the normal operation of the fan 31, for example, the preset current range can be a range greater than 0.1 ampere. In the case that the current value of the fan current detection signal is within the preset current range, it indicates that the current of the fan 31 is normal, that is, the fan 31 is in a normally started state and the current value is normal, at this time, the subsequent steps can not be executed; and in the case that the current value of the fan current detection signal is not within the preset current range, it indicates that the fan 31 is in a normally started state but the current value is abnormal, at this time, the alarm result can be determined as the operation execution result, and the operation execution result can be used to indicate the result of the current running state of the clothes drying machine being abnormal; that is, when the operation execution result is the alarm result, the preset alarm operation can be performed, such as application push information, detection report log, etc., which are not limited in the embodiment.

[0079] As shown in Figure 3 In an optional embodiment of the present application, the clothes drying machine dry-burn prevention control system can further include an alarm module 14, the input end of the alarm module 14 is electrically connected with the second output end of the main control module 11; the main control module 11 is further used to output an alarm signal to the input end of the alarm module 14 in the case that the operation execution result is the alarm result; and the alarm module 14 is used to perform an alarm operation according to the alarm signal.

[0080] The master module 11 of the embodiment performs the process of detecting the operation of the clothes drying machine according to the zero-crossing level signal and the fan detection signal when the clothes drying machine is in the drying open state, and outputs the fan detection result of the clothes drying machine. The operation detection of the clothes drying machine can determine whether the zero-crossing level signal and the fan detection signal correspond to the preset alarm condition corresponding to the drying open state, wherein the preset alarm condition can represent the condition that needs to be alarmed in advance, for example, when the clothes drying machine is in the drying open state, the corresponding alarm condition can include but is not limited to that the zero-crossing level signal is not the first zero-crossing level signal, and the fan detection signal does not meet the preset fan 31 signal. When the zero-crossing level signal and the fan detection signal meet the preset alarm condition, it can be determined that the operation execution result is an alarm result, indicating that the current clothes drying machine operation is abnormal. At this time, an alarm signal can be generated and output to the input end of the alarm module 14 in parallel, so that the alarm module 14 can perform an alarm operation according to the alarm signal, wherein the alarm operation can include but is not limited to application pop-up window, buzzer start, alarm light opening, etc. The embodiment does not make specific limitation.

[0081] As shown in Figure 4 In an optional embodiment of the present application, the alarm module 14 includes a network communication unit 142 and / or a prompt unit 141. The network communication unit 142 is connected with the master module 11, and is used to output application alarm information to the preset client according to the alarm signal. The input end of the prompt unit 141 is electrically connected with the master module 11, and is used to output a prompt signal according to the alarm signal. Specifically, the input end of the network communication unit 142 is electrically connected with the second output end of the master module 11, and the input end of the prompt unit 141 is electrically connected with the second output end of the master module 11.

[0082] The network communication unit 142 in the embodiment can output application prompt information to the preset client according to the alarm signal, wherein the preset client can represent a client that is bound to the clothes drying machine, and the application prompt information can represent information for prompting the user in the client, such as pop-up information, tweet information, etc. The prompt unit 141 can be a prompt device pre-configured on the clothes drying machine, such as a buzzer, a light-emitting device, etc. The prompt unit 141 outputs a prompt signal according to the alarm signal, wherein the prompt signal can be a signal actually emitted by the prompt device. For example, when the prompt device is a buzzer, the output prompt signal can be a sound signal, and when the prompt device is a light-emitting device, the output prompt signal can be a light signal. Of course, other prompt devices can also be used, and the embodiment does not make specific limitation.

[0083] As shown in Figure 5As shown, in an optional embodiment of this application, the zero-crossing detection module 12 includes a relay J3 and an optocoupler U6; the power supply terminal of the heating device 21 and the first terminal of the optocoupler U6 are electrically connected to the mains power line ACL, and the relay J3 is electrically connected to the line of the mains power line ACL. The fourth terminal of the relay J3 and the optocoupler U6 are also electrically connected to the main control module 11; the relay J3 is used to conduct or disconnect the mains power line ACL under the control of the main control module 11, so that the heating device 21 and the optocoupler U6 are connected to or disconnected from the mains power.

[0084] In this embodiment, relay J3 can be connected in series on the mains power line ACL, so that the conduction or disconnection of relay J3 can control the heating device 21 and optocoupler U6 to connect or disconnect the mains power; relay J3 is electrically connected to the main control module 11, so that relay J3 can receive the relay control command output by the main control module 11, and conduct or disconnect according to the relay control command.

[0085] like Figure 5 As shown, in an optional embodiment of this application, the zero-crossing detection module 12 further includes a first diode ZD4; the first terminal of relay J3, the second terminal of relay J3, the first terminal of the first diode ZD4, and the first terminal of optocoupler U6 are electrically connected to the mains live wire ACL; the second terminal of the first diode ZD4 and the second terminal of optocoupler U6 are electrically connected to the mains neutral wire ACN; the third terminal of optocoupler U6 is electrically connected to the reference ground; the fourth terminal of optocoupler U6 is electrically connected to the first input terminal of the main control module 11; the first terminal of relay J3 is also electrically connected to the heating device 21; and the control terminal of relay J3 is electrically connected to the main control module.

[0086] In this embodiment, the zero-crossing detection module 12 may further include a second resistor R78, a third resistor R79, a fourth resistor R77, a fifth resistor R80, and a third capacitor C55; the first end of the second resistor R78, the first end of the relay J3, and the mains live wire are electrically connected; the second end of the second resistor R78 is electrically connected to the first end of the third resistor R79; the second end of the third resistor R79, the first end of the first diode ZD4, and the first end of the optocoupler U6 are electrically connected; the first end of the fourth resistor R77, the fourth end of the optocoupler U6, and the fifth resistor R78 are electrically connected to the first terminal of the relay J3. The first terminal of resistor R80 is electrically connected, the second terminal of the fourth resistor R77 is electrically connected to the power input terminal, the second terminal of the fifth resistor R80, the first terminal of the third capacitor C55, and the first input terminal of the main control module 11 are electrically connected, the second terminal of the third capacitor C55, the third terminal of the optocoupler U6 are electrically connected to the reference ground, the third terminal of relay J3 is electrically connected to the voltage input terminal, and the fourth terminal of relay J3 is electrically connected to the relay control terminal of the main control module 11; thus, the main control module 11 can output relay control commands to the fourth terminal of relay J3 through the relay control terminal.

[0087] In practical implementation, when the clothes dryer is switched to the drying mode, the first and second terminals of relay J3 are energized and conduct. Since the first and second terminals of relay J3 are also electrically connected to the heating element 21, the energization of the first and second terminals of relay J3 can activate the heating element 21. At this time, the AC voltage input from the mains live wire ACL and the mains neutral wire ACN first passes through the current limiting resistors R78 and R79, and then through the first diode. ZD4, the first diode, is used to stabilize the AC voltage at 5V on the positive half-cycle and conduct during the negative half-cycle to protect the optocoupler U6. This ensures that after the AC voltage passes through the optocoupler U6, the optocoupler U6 conducts during the positive half-cycle and does not conduct during the negative half-cycle. In other words, the AC signal becomes a 50Hz PWM signal with a 50% duty cycle after passing through the optocoupler U6. Then, the PWM signal is current-limited by the fifth resistor R80 and filtered by the third capacitor C55 before being absorbed by the receiving pin corresponding to the first input terminal of the main control module 11.

[0088] As can be seen, the zero-crossing detection module 12 in this embodiment can detect when the relay J3 is conducting 220V AC mains power. Each time the 220V AC mains power crosses zero, the level at the first input terminal of the main control module 11 will undergo a high-low level flip. Therefore, the first input terminal of the main control module 11 is a PWM with a 50% duty cycle. When there is no AC mains power, the first input terminal of the main control module 11 is at a low level, so that the main control module 11 can determine whether the heating device 21 is in working state based on the zero-crossing level signal of the first input terminal of the main control module 11.

[0089] like Figure 6 As shown in an optional embodiment of this application, the fan detection module 13 includes a terminal block unit 131 and a sampling unit 132;

[0090] The first end of the terminal block unit 131 is electrically connected to the power input terminal, the second end of the terminal block unit 131 is electrically connected to the first output terminal of the main control module 11, the third end of the terminal block unit 131 is electrically connected to the status terminal of the fan 31 of the main control module 11, the fourth end of the terminal block unit 131 is electrically connected to the first end of the sampling unit 132, and the second end of the sampling unit 132 is electrically connected to the voltage acquisition terminal of the main control module 11; the first end, the second end, the third end, and the fourth end of the terminal block unit 131 are also electrically connected to the fan 31.

[0091] like Figure 6As shown, in an optional embodiment of the present application, the sampling unit 132 comprises a sampling resistor R39, a first resistor R40, a first inductor L5, a first capacitor EC8, a second capacitor C33, a second diode D7 and a third diode D8.

[0092] The first end of the sampling resistor R39, the first end of the first inductor L5 and the fourth end of the terminal unit 131 are electrically connected, the second end of the first inductor L5, the first end of the first capacitor EC8, the first end of the second capacitor C33 and the first end of the first resistor R40 are electrically connected, the second end of the sampling resistor R39, the second end of the first capacitor EC8, the second end of the second capacitor C33 and the reference ground are electrically connected, the second end of the first resistor R40, the first end of the second diode D7, the second end of the third diode D8 and the voltage collection end of the master control module 11 are electrically connected, the first end of the third diode D8 is electrically connected with the reference ground, and the second end of the second diode D7 is electrically connected with the power input end.

[0093] In specific implementation, the terminal unit 131 can be the terminal of the DC fan 31, the first end of the terminal unit 131 is used to input the working power to the motor of the DC fan 31, and then flows back to the reference ground from the fourth end of the terminal unit 131. The second end of the terminal unit 131 is electrically connected with the first output end of the master control module 11, so that the fan starting signal output by the first output end of the master control module 11 can be received by the DC fan 31 through the second end of the terminal unit 131, and the fan starting signal can be specifically a pulse width modulation (PWM) signal with a frequency of 1000 Hz and a duty cycle of 0~100%, so as to control the rotating speed of the fan 31; the third end of the terminal unit 131 is electrically connected with the fan 31 state end of the master control module 11, so that the fan state detection signal received from the motor of the fan 31 can be transmitted to the fan 31 state end of the master control module 11 through the third end of the terminal unit 131, and specifically, the fan state detection signal can be a high level or a low level, the high level indicates that the motor of the fan 31 is abnormal, and the low level indicates that the motor of the fan 31 is working normally; the high-precision sampling resistor R39 with a resistance of 0.1 ohm is adopted, after the current flows through the high-precision sampling resistor R39, the voltage at the high potential thereof can be obtained according to the Ohm's law U=IR, the voltage is filtered through the first inductor L5, the first capacitor EC8 and the second capacitor C33, and then is transmitted to the voltage collection end of the master control module 11 after being limited by the first resistor R40 and being protected by the second diode D7 and the third diode D8, so that the master control module 11 detects the voltage by using an internal analog to digital converter (ADC), and the current flowing through the first resistor R40 is obtained by inversely deducing according to the Ohm's law, thereby obtaining the fan current detection signal, and the current is the overall load current of the motor of the fan 31.

[0094] As can be seen, in this embodiment, after receiving the voltage output by the fan detection module 13 through the voltage acquisition terminal of the main control module 11, the current flowing through the first resistor R40 is obtained, which is the fan current detection signal. This current is the overall load current of the fan 31 motor. Furthermore, the fan 31 motor status, which is the fan status detection signal, is collected by the third terminal of the terminal block unit 131 through the fan 31 status terminal of the main control module 11. Based on the fan current detection signal and the fan status detection signal, a fan detection signal is generated. Then, the fan detection signal can be used to determine whether the fan 31 of the clothes drying rack is working properly.

[0095] Figure 7 This is a flowchart illustrating a method for preventing dry burning of a clothes drying rack, provided in an embodiment of this application. This method can be applied to one or more electronic devices, such as a clothes drying rack or control equipment. Furthermore, the executing entity of this method can be hardware or software. When the executing entity is hardware, it can be one or more of the aforementioned electronic devices. For example, a single electronic device can execute this method, or multiple electronic devices can cooperate with each other to execute this method. When the executing entity is software, this method can be implemented as multiple software programs or software modules, or as a single software program or software module. No specific limitations are made here.

[0096] like Figure 7 As shown in the embodiment of this application, a method for preventing dry burning of a clothes drying rack is provided. The clothes drying rack is equipped with a fan and a heating device, and the method may specifically include the following steps:

[0097] Step S110: Obtain the zero-crossing level signal corresponding to the heating device and the drying function status of the clothes dryer.

[0098] The heating device can be a device with heating function, such as a PTC heating wire, heating tube, or resistance wire. The zero-crossing level signal corresponding to the heating device can represent the signal that detects the zero point position in the AC waveform corresponding to the heating device. The specific acquisition method can be through a preset pin. Of course, the zero-crossing level signal can be a voltage signal, a high-level signal, a low-level signal, etc., and this embodiment does not make specific limitations on this. The drying function status of the clothes dryer can indicate whether the drying function of the clothes dryer is turned on. For example, the drying function status can be a drying off state or a drying on state. The drying off state indicates that the drying function of the clothes dryer is off, and the drying on state indicates that the drying function of the clothes dryer is on.

[0099] Step S120: Determine the operating type of the clothes drying machine based on the zero-crossing level signal and the drying function status.

[0100] Specifically, after the zero-crossing level signal and the drying function state are acquired, the running type corresponding to the clothes drying machine can be determined according to the zero-crossing level signal and the drying function state. The running type can represent a specific type of current operation of the clothes drying machine. For example, the running type can be a heating self-starting type or a heating starting type. The heating self-starting type can represent that the heating device is abnormally started when the clothes drying machine is running, that is, the state that the heating device is abnormally self-started and heated when the drying function of the clothes drying machine is closed. The heating starting type can represent that the heating device is normally started when the clothes drying machine is running, that is, the state that the heating device is normally started and heated when the drying function of the clothes drying machine is turned on.

[0101] Step S130: performing a target operation corresponding to the running type on the fan to obtain an operation execution result.

[0102] Specifically, after the running type is obtained, a target operation corresponding to the running type can be performed on the fan to obtain an operation execution result. The target operation corresponding to the running type can represent a preset operation corresponding to each running type, for example, the preset operation corresponding to the heating self-starting type is a start fan operation, or the preset operation corresponding to the heating starting type is a fan detection operation. Therefore, in the case of abnormal start of the heating device, the fan can be started in time for heat dissipation, and in the case of normal start of the heating device, the fan can be detected to determine whether it is running normally. This avoids the situation that the fan and the heating device cannot cooperate normally, resulting in continuous dry burning of the heating device. That is, the problem of dry burning risk of the PTC control mode of the clothes drying machine in the prior art is solved, and the dry burning risk of the clothes drying machine is effectively reduced.

[0103] As shown in FIG. 1, Figure 8 In an optional embodiment of the present application, based on the zero-crossing level signal and the drying function state, the running type corresponding to the clothes drying machine is determined, and the method can further include the following steps:

[0104] Step S111: in the case that the drying function state is a drying-off state, according to the zero-crossing level signal, the heating self-starting type is determined as the running type, and the start fan operation corresponding to the heating self-starting type is determined as the target operation.

[0105] In the process of determining the running type corresponding to the clothes drying machine based on the zero-crossing level signal and the drying function state, the specific state of the drying function state can be determined. In the case of the drying function state being the drying-off state, the heating self-starting type is determined as the running type according to the zero-crossing level signal, and the starting fan operation corresponding to the heating self-starting type is determined as the target operation. The starting fan operation can represent an operation for controlling the fan to start. For example, in the case that the clothes drying machine is in the drying-off state and the zero-crossing level signal indicates that the heating device is turned on, a fan starting signal can be outputted, which is used to start the fan. At this time, the operation execution result is the result of whether the fan is started. That is, the fan starting signal controls the fan to switch to the starting state. In the case of abnormal starting of the heating device, the fan can be started in time to prevent the heating device of the clothes drying machine from continuous dry burning. Thus, the problem of dry burning risk of the PTC control mode of the clothes drying machine in the prior art is solved, and the dry burning risk of the clothes drying machine is effectively reduced.

[0106] It should be noted that in the process of executing the starting fan operation on the fan to obtain the operation execution result, that is, in the process of outputting the fan starting signal according to the zero-crossing level signal, it can be determined whether the zero-crossing level signal belongs to the preset first zero-crossing level signal. The first zero-crossing level signal can represent a signal with a zero-crossing level, that is, in the case that the zero-crossing level signal belongs to the preset first zero-crossing level signal, it indicates that the currently detected heating device has an open state of AC driving. On the other hand, since the clothes drying machine is in the drying-off state at this time, that is, the heating device is abnormally started in the drying-off state of the clothes drying machine. Thus, the fan starting signal can be generated and outputted, and the fan can be started through the fan starting signal. In the case of abnormal starting of the heating device, the fan can be started in time to prevent the heating device of the clothes drying machine from continuous dry burning. Thus, the problem of dry burning risk of the PTC control mode of the clothes drying machine in the prior art is solved, and the dry burning risk of the clothes drying machine is effectively reduced.

[0107] In an example, in the case that the fan control signal is a fan starting signal, the fan can be started based on the fan starting signal. The specific starting method can be directly outputting a starting electric signal to the fan according to the fan starting signal to start the fan, or outputting the fan starting signal to the fan control module to start the fan according to the fan starting signal. Of course, other fan starting methods can also be used, which are not limited in the embodiment.

[0108] It can be seen that, by acquiring the zero-crossing level signal corresponding to the heating device, and in the case that the clothes drying machine is in the drying-off state, a fan start signal is generated according to the zero-crossing level signal to start the fan based on the fan start signal; thus, in the case that the clothes drying machine is in the drying-off state, the zero-crossing level signal is used to determine whether the heating unit is abnormally started, and in the case that the heating unit is abnormally started, the fan start signal can be generated in time to start the fan; thus, the heating device of the clothes drying machine can be prevented from continuously drying after abnormal start, the problem of drying risk of the PTC control mode of the clothes drying machine in the prior art is solved, and the drying risk of the clothes drying machine can be effectively reduced.

[0109] Step S112: In the case that the drying function state is the drying-on state, it is determined whether the zero-crossing level signal belongs to a preset first zero-crossing level signal.

[0110] Step S113: In the case that the zero-crossing level signal belongs to the first zero-crossing level signal, a fan detection signal corresponding to the fan is acquired.

[0111] Step S114: According to the zero-crossing level signal and the fan detection signal, the heating start type is determined to be the running type, and the fan detection operation corresponding to the heating start type is determined to be the target operation.

[0112] In the case that the drying function state is the drying-on state, it is determined whether the zero-crossing level signal belongs to a preset first zero-crossing level signal, in the case that the zero-crossing level signal belongs to the first zero-crossing level signal, it is determined that the heating device is in the on state, and thus the fan detection signal corresponding to the fan can be acquired, the fan detection signal can represent a detection signal corresponding to the current running state of the fan; and then according to the zero-crossing level signal and the fan detection signal, the heating start type is determined to be the running type, and the fan detection operation corresponding to the heating start type is determined to be the target operation; wherein the fan detection operation can represent an operation of detecting whether the fan is normally started, and the operation execution result can represent a fan detection result generated after the fan is checked, the fan detection result can represent a normal fan result or an abnormal fan result, the normal fan result can represent a result of normal start and running of the fan, and the abnormal fan result can represent a result of abnormal running of the fan; thus, the fan can be detected in real time when the clothes drying machine starts the drying function, i.e., the heating device is normally started, which can timely detect the fan to prevent the fan from being abnormal after the heating device is normally started, and thus the problem of drying risk of the PTC control mode of the clothes drying machine in the prior art is solved, and the drying risk of the clothes drying machine can be effectively reduced.

[0113] It should be noted that in the case that the drying function state is the drying open state, after determining whether the zero-crossing level signal belongs to the preset first zero-crossing level signal, the embodiment can further include, in the case that the zero-crossing level signal does not belong to the preset first zero-crossing level signal, indicating that the current heating device has not been normally started, that is, the heating device is abnormal, at this time, a heating device abnormal signal can be generated, and a prompt information can be output through the heating device abnormal signal, so that the user can be prompted according to the prompt information. The prompt information can specifically include but is not limited to application pop-up prompt, buzzer prompt, warning light prompt, etc., and the embodiment does not make specific limitation thereto.

[0114] It can be seen that through the drying function state of the clothes airing machine, the embodiment can determine whether the current clothes airing machine is opened to the drying function, and in the drying closed state, it can be judged whether the zero-crossing level signal belongs to the preset first zero-crossing level signal, and when the zero-crossing level signal belongs to the preset first zero-crossing level signal, the target operation corresponding to the fan execution running type is to generate a fan start signal, and the operation execution result is obtained according to the execution result of the fan start signal. In the drying open state, if the zero-crossing level signal belongs to the first zero-crossing level signal, the fan detection signal corresponding to the fan is obtained, and the target operation corresponding to the fan execution running type is to perform clothes airing machine running detection according to the fan detection signal to generate the operation execution result of the clothes airing machine. That is, the embodiment can use different detection methods to check the heating device and the fan of the clothes airing machine in different scenes of the drying function opening and closing, so as to avoid the problem of dry burning risk caused by abnormal heating device or fan, and effectively reduce the dry burning risk of the clothes airing machine.

[0115] In an optional embodiment of the present application, the target operation corresponding to the fan execution running type is performed to obtain the operation execution result, which can specifically include the following steps: in the case that the target operation is a fan detection operation, the fan state detection signal and the fan current detection signal are extracted from the fan detection signal; in the case that the fan state detection signal is a fan state normal signal, it is determined whether the current value of the fan current detection signal is within the preset current range; in the case that the current value of the fan current detection signal is not within the preset current range, an alarm signal is generated; and the operation execution result is generated according to the alarm signal.

[0116] In the case where the target operation is a fan detection operation, the fan state detection signal and the fan current detection signal are extracted from the fan detection signal. The fan state detection signal can be a detection signal indicating the running state of the fan, such as a fan state normal signal or a fan state abnormal signal. The fan state normal signal indicates that the running state of the fan is normal, and the fan state abnormal signal indicates that the running state of the fan is abnormal. The fan current detection signal can indicate the current value of the fan. Thus, it can be determined whether the fan state detection signal is a fan state normal signal. When the fan state detection signal is a fan state abnormal signal, it indicates that the fan is in an abnormal state and cannot be started normally. In this case, a fan abnormality prompt information can be output. The fan abnormality prompt information can include, but is not limited to, an application pop-up prompt, a buzzer prompt, a warning light prompt, etc. The present embodiment does not make specific limitations on this. When the fan state detection signal is a fan state normal signal, it indicates that the fan has been started normally. In this case, it can be determined whether the current value of the fan current detection signal is within a preset current range. The preset current range indicates the current range in which the fan is normally running. For example, the preset current range can be a range greater than 0.1 ampere. When the current value of the fan current detection signal is within the preset current range, it indicates that the fan current is normal, i.e., the fan is in a normally started state and the current value is normal. In this case, the subsequent steps can not be performed. When the current value of the fan current detection signal is not within the preset current range, it indicates that the fan 31 is in a normally started state but the current value is abnormal. In this case, the alarm result is determined as the operation execution result. In this case, the operation execution result can indicate that the current running state of the clothes drying machine is abnormal. When the operation execution result is an alarm result, a preset alarm operation can be performed, such as application push information, detection report log, etc. The present embodiment does not make specific limitations on this.

[0117] In a specific implementation, after the clothes drying machine is started and is in a normal standby state, the drying function state is in a drying-off state, the zero-crossing detection module detects the zero-crossing level signal of the heating device, when the zero-crossing level signal is a first zero-crossing level signal, that is, the zero-crossing level signal is no zero-crossing level, it is considered that the heating device is in an unstarted state, so the heating device working system is normal, and the subsequent steps can be executed without needing to be executed; when the zero-crossing level signal is not the first zero-crossing level signal, that is, the zero-crossing level signal is a zero-crossing level, it is considered that the heating device is in an uncontrolled started state, so the heating device is in an abnormal starting dry burning state, at this time, a fan starting signal can be generated to control the fan to start, so as to achieve the effect of starting the fan to cool down, and the preset client pop-up window bound to the clothes drying machine, the buzzer alarm sound of the clothes drying machine itself can be used to continuously remind the user to power off for system checking. When the drying function state of the clothes drying machine is in a drying-on state, when the zero-crossing level signal is not the first zero-crossing level signal, that is, the zero-crossing level signal is no zero-crossing level, it is considered that the heating device is in a system-controlled started state but is not started, at this time, it can be determined that the heating device is in a heating failure state, an alarm signal is generated, and the user is prompted based on the alarm signal, for example, the preset client pop-up window bound to the clothes drying machine, the buzzer alarm sound of the clothes drying machine itself can be used to continuously remind the user to power off for system checking; when the zero-crossing level signal is the first zero-crossing level signal, that is, the zero-crossing level signal is a zero-crossing level, it is considered that the heating device is in a system-controlled normally started state, then the fan detection signal output by the fan detection module can be used to determine whether the fan is normally started, specifically, the fan state detection signal and the fan current detection signal can be extracted from the fan detection signal, when the fan state detection signal is a fan state normal signal, it can be determined whether the current value of the fan current detection signal is within a preset current range, for example, the current value of the fan current detection signal is greater than or equal to 0.1 ampere, it is considered that the current value is within the preset current range, at this time, it can be determined that the fan is normally started, so as to determine the operation execution result that the system-controlled drying-on and the heating device and the fan are normally working, and then the step S110 and the steps after the step S110 can be executed, so as to achieve the purpose of continuously detecting the clothes drying machine; when the current value of the fan current detection signal is not within the preset current range, for example, the current value of the fan current detection signal is less than 0.1 ampere, at this time, an alarm signal can be generated, and the user is prompted based on the alarm signal, for example, the preset client pop-up window bound to the clothes drying machine, the buzzer alarm sound of the clothes drying machine itself can be used to continuously remind the user to power off for system checking.

[0118] As shown in Figure 9 , the embodiment of the present application provides an electronic device, comprising a processor 910, a communication interface 920, a memory 930 and a communication bus 940, wherein the processor 910, the communication interface 920 and the memory 930 complete mutual communication through the communication bus 940.

[0119] a memory 930, configured to store a computer program;

[0120] In an embodiment of the present application, the processor 910 is configured to implement the drying machine dry burning prevention control method provided by any one of the preceding method embodiments when executing the program stored in the memory 930. The zero-crossing detection module detects the zero-crossing level signal corresponding to the heating device, so that the main control module receives the zero-crossing level signal, determines the running type corresponding to the drying machine according to the zero-crossing level signal and the drying function state of the drying machine, and performs the target operation corresponding to the running type on the fan to obtain the operation execution result. Thus, the target operation corresponding to the fan can be performed in combination with the zero-crossing level signal corresponding to the heating device and the drying function state of the drying machine, thereby improving the precision of the fan control, avoiding the situation that the fan and the heating device cannot normally cooperate to cause the heating device to continuously dry burn, i.e., solving the dry burning risk problem of the PTC control mode of the drying machine in the prior art, and effectively reducing the dry burning risk of the drying machine.

[0121] The embodiment of the present application also provides a computer readable storage medium having a computer program stored thereon. The computer program is executed by a processor to implement the drying machine dry burning prevention control method provided by any one of the preceding method embodiments. The zero-crossing detection module detects the zero-crossing level signal corresponding to the heating device, so that the main control module receives the zero-crossing level signal, determines the running type corresponding to the drying machine according to the zero-crossing level signal and the drying function state of the drying machine, and performs the target operation corresponding to the running type on the fan to obtain the operation execution result. Thus, the target operation corresponding to the fan can be performed in combination with the zero-crossing level signal corresponding to the heating device and the drying function state of the drying machine, thereby improving the precision of the fan control, avoiding the situation that the fan and the heating device cannot normally cooperate to cause the heating device to continuously dry burn, i.e., solving the dry burning risk problem of the PTC control mode of the drying machine in the prior art, and effectively reducing the dry burning risk of the drying machine.

[0122] The embodiment of the present application provides a clothes drying machine, which comprises the clothes drying machine anti-dry burning control system in any of the foregoing embodiments, a zero-crossing detection module is used for detecting a zero-crossing level signal corresponding to a heating device, so that a main control module receives the zero-crossing level signal, and according to the zero-crossing level signal and a drying function state of the clothes drying machine, the running type corresponding to the clothes drying machine is determined; and a target operation corresponding to the running type is performed on the fan, and an operation execution result is obtained; so that the target operation corresponding to the fan can be performed in combination with the zero-crossing level signal corresponding to the heating device and the drying function state of the clothes drying machine, and the precision of the fan control is improved, the situation that the heating device continuously dries and burns due to the fact that the fan and the heating device cannot normally cooperate is avoided, that is, the dry burning risk problem of the PTC control mode of the clothes drying machine in the prior art is solved, and the dry burning risk of the clothes drying machine can be effectively reduced.

[0123] The embodiment of the present application provides a clothes drying machine, which comprises the clothes drying machine anti-dry burning control system in any of the foregoing embodiments, a zero-crossing detection module is used for detecting a zero-crossing level signal corresponding to a heating device, so that a main control module receives the zero-crossing level signal, and according to the zero-crossing level signal and a drying function state of the clothes drying machine, the running type corresponding to the clothes drying machine is determined; and a target operation corresponding to the running type is performed on the fan, and an operation execution result is obtained; so that the target operation corresponding to the fan can be performed in combination with the zero-crossing level signal corresponding to the heating device and the drying function state of the clothes drying machine, and the precision of the fan control is improved, the situation that the heating device continuously dries and burns due to the fact that the fan and the heating device cannot normally cooperate is avoided, that is, the dry burning risk problem of the PTC control mode of the clothes drying machine in the prior art is solved, and the dry burning risk of the clothes drying machine can be effectively reduced.

[0124] It should be noted that, in this document, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action, without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. In this document, the terms "comprises", "comprising", or the like, are used in the sense of "including" and in the sense of "consisting of", and the like.

[0125] The above-described embodiments of the application have several aspects, no single one of which is solely responsible for the application's desirable attributes. Without limiting the scope of this application, several non-limiting examples of aspects of the application are discussed below.

[0126] The preceding description of a specific implementation of the application is not intended to limit the scope of the application. Numerous modifications to the described embodiments will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the described embodiments, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dry-burn prevention control system for a clothes drying machine, characterized in that, The clothes drying machine comprises a zero-crossing detection module and a main control module; the clothes drying machine is provided with a fan and a heating device; The zero-crossing detection module is connected with the heating device and is used for detecting a zero-crossing level signal corresponding to the heating device; The main control module is connected with the zero-crossing detection module and is used for receiving the zero-crossing level signal and determining a running type corresponding to the clothes drying machine according to the zero-crossing level signal and a drying function state of the clothes drying machine; And a target operation corresponding to the running type is performed on the fan to obtain an operation execution result.

2. The clothes drying machine dry-burn prevention control system according to claim 1, characterized in that, The clothes drying machine further comprises a fan detection module, an output end of the fan detection module is electrically connected with a second input end of the main control module, and an input end of the fan detection module is electrically connected with a first output end of the main control module; The fan detection module is used for detecting a fan detection signal corresponding to the fan and outputting the fan detection signal to the main control module; The main control module is further used for, in a case where the drying function state is a drying opening state, determining a heating starting type as the running type according to the zero-crossing level signal and the fan detection signal, and determining a fan detection operation corresponding to the heating starting type as the target operation; And the fan detection operation is performed on the fan to obtain the operation execution result.

3. The clothes drying machine dry-burn prevention control system according to claim 2, characterized in that, The fan detection signal comprises a fan state detection signal and a fan current detection signal; The main control module is further used for, in a case where the fan state detection signal is a fan state normal signal, determining whether a current value corresponding to the fan current detection signal is within a preset current range; and in a case where the current value corresponding to the fan current detection signal is not within the preset current range, generating the operation execution result.

4. The clothes drying machine dry-burn prevention control system according to claim 2, characterized in that, The clothes drying machine further comprises an alarm module, an input end of the alarm module is electrically connected with a second output end of the main control module; The main control module is further used for, in a case where the operation execution result is an alarm result, outputting an alarm signal to the input end of the alarm module; The alarm module is used for performing an alarm operation according to the alarm signal.

5. The clothes drying machine dry-burn prevention control system according to claim 4, characterized in that, The alarm module comprises a network communication unit and / or a prompt unit; The network communication unit is electrically connected with the main control module and is used for outputting application alarm information to a preset client according to the alarm signal; An input end of the prompt unit is electrically connected with the main control module and is used for outputting a prompt signal according to the alarm signal.

6. The clothes drying machine dry-burn prevention control system according to claim 1, characterized in that, The zero-crossing detection module comprises a relay and a photoelectric coupler; A power supply end of the heating device and a first end of the photoelectric coupler are electrically connected to a live wire of a commercial power supply, the relay is electrically connected in the line of the live wire of the commercial power supply, and the relay and a fourth end of the photoelectric coupler are further electrically connected with the main control module; The relay is used for, under the control of the main control module, conducting or disconnecting the live wire of the commercial power supply, so that the heating device and the photoelectric coupler are connected to or disconnected from the commercial power supply.

7. The clothes drying machine dry-burn prevention control system according to claim 6, characterized in that, The zero-crossing detection module further comprises a first diode; The first end of the relay, the second end of the relay, the first end of the first diode, and the first end of the optocoupler are electrically connected to a live line of commercial power, the second end of the first diode and the second end of the optocoupler are electrically connected to a neutral line of commercial power, the third end of the optocoupler is electrically connected to a reference ground, the fourth end of the optocoupler is electrically connected to the first input end of the master control module, the first end of the relay is also electrically connected to the heating device, and the control end of the relay is electrically connected to the master control module.

8. The clothes drying machine dry-burn prevention control system according to claim 2, characterized in that, The fan detection module comprises a wiring terminal unit and a sampling unit. The first end of the wiring terminal unit is electrically connected to a power input end, the second end of the wiring terminal unit is electrically connected to the first output end of the master control module, the third end of the wiring terminal unit is electrically connected to a fan state end of the master control module, the fourth end of the wiring terminal unit is electrically connected to the first end of the sampling unit, and the second end of the sampling unit is electrically connected to a voltage collection end of the master control module; the first end of the wiring terminal unit, the second end of the wiring terminal unit, the third end of the wiring terminal unit, and the fourth end of the wiring terminal unit are also electrically connected to the fan.

9. The clothes drying machine dry-burn prevention control system of claim 8, wherein, The sampling unit comprises a sampling resistor, a first resistor, a first inductor, a first capacitor, a second capacitor, a second diode, and a third diode. The first end of the sampling resistor, the first end of the first inductor, and the fourth end of the wiring terminal unit are electrically connected, the second end of the first inductor, the first end of the first capacitor, the first end of the second capacitor, and the first end of the first resistor are electrically connected, the second end of the sampling resistor, the second end of the first capacitor, the second end of the second capacitor, and a reference ground are electrically connected, the second end of the first resistor, the first end of the second diode, the second end of the third diode, and a voltage collection end of the master control module are electrically connected, the first end of the third diode is electrically connected to the reference ground, and the second end of the second diode is electrically connected to the power input end.

10. A clothes drying machine characterised in that, The clothes drying machine anti-dry burning control system comprises the clothes drying machine anti-dry burning control system according to any one of claims 1-9.

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