Equipment over-temperature protection method and device and electrical equipment

Abstract

The invention relates to the technical field of electric appliance safety control, and discloses an equipment over-temperature protection method and device and electric appliance equipment.The current equipment temperature is monitored in the process that the equipment is in any running state, and when it is detected that the current equipment temperature reaches the preset over-temperature protection temperature, over-temperature protection operation is triggered, the over-temperature protection operation comprises the steps that a load control assembly of the equipment is controlled to be disconnected, a fan is controlled to execute heat dissipation operation, the temperature of the equipment can be effectively reduced, and it is ensured that the temperature of the equipment is not continuously too high; and when the current equipment temperature is smaller than the preset over-temperature protection quitting temperature, the over-temperature protection operation is quitted, and the potential safety hazard problem of product overheating caused by failure of the relay and the temperature limiter is solved.

Description

Technical Field

[0001] This invention relates to the field of electrical safety control technology, specifically to a method, device, and electrical equipment for over-temperature protection of equipment. Background Technology

[0002] Heater products typically contain relays that control the on / off switching of the heating load and temperature limiters as safety devices. If the relays become stuck or the temperature limiters fail, the heating element will continue to heat, posing a safety hazard of overheating to the entire unit. Current solutions to this safety hazard involve using dual-pole relay control or dual temperature limiter control for double protection. However, if the product cannot use dual-pole relays or dual temperature limiters due to space constraints, relying solely on a single relay and temperature limiter design will still be insufficient to prevent component failure, meaning the risk of overheating remains. Summary of the Invention

[0003] This invention provides a method, device, and electrical equipment for overheat protection of equipment, in order to solve the safety risk of overheating caused by the failure of relays or temperature limiters.

[0004] In a first aspect, the present invention provides a method for over-temperature protection of equipment, the method comprising: monitoring the current temperature of the equipment during any operating state, the operating state including at least a working state and a standby state; triggering an over-temperature protection operation when the current temperature of the equipment is detected to reach a preset over-temperature protection temperature, the over-temperature protection operation comprising: controlling the load control component of the equipment to disconnect and controlling the fan to perform a heat dissipation operation; and exiting the over-temperature protection operation when the current temperature of the equipment is lower than a preset exit over-temperature protection temperature.

[0005] The over-temperature protection method provided by this invention monitors the current equipment temperature during any operating state. When the current equipment temperature reaches a preset over-temperature protection temperature, an over-temperature protection operation is triggered. The over-temperature protection operation includes: controlling the load control component of the equipment to disconnect and controlling the fan to perform heat dissipation operation, which can effectively reduce the equipment temperature and ensure that the equipment temperature does not remain too high; and exiting the over-temperature protection operation when the current equipment temperature is lower than the preset exit temperature, thus solving the safety hazard problem of product overheating caused by relay and temperature limiter failure.

[0006] In one optional implementation, the current device temperature is detected to have reached the preset over-temperature protection temperature by the following steps: if the current device temperature is greater than the preset over-temperature protection temperature, start timing; if the current device temperature is greater than the preset over-temperature protection temperature for a continuous fixed period of time, determine that the current device temperature has reached the preset over-temperature protection temperature.

[0007] This invention only determines a true overtemperature when the temperature continuously exceeds the overtemperature protection temperature, thus avoiding equipment shutdown caused by accidental interference and affecting normal user operation.

[0008] In one optional implementation, the exiting over-temperature protection operation includes: controlling the fan to stop running; controlling the equipment to return to the operating state before the over-temperature protection was triggered, or controlling the equipment to enter a standby state.

[0009] After determining that the device has exited over-temperature protection, this invention can control the device to return to its operating state before over-temperature protection, so as to restore the working state and reduce the loss of task interruption, or control the device to enter standby state to build a safe buffer operation after failure and reduce the risk of accidental start.

[0010] In an optional implementation, the method further includes: after triggering the over-temperature protection operation, increasing the currently recorded number of over-temperature protection triggers; if the increased number of over-temperature protection triggers is greater than a preset threshold, triggering a relay and temperature limiter failure protection operation, wherein triggering the relay and temperature limiter failure protection operation includes: disconnecting the load control component of the control device, controlling the fan to perform a heat dissipation operation, and sending a prompt message indicating the failure of the relay and temperature limiter to the user.

[0011] This invention indirectly detects electrical sticking (because the over-temperature protection cannot cut off power normally when the relay is stuck, resulting in frequent triggering of the over-temperature protection) and temperature limiter failure (after the temperature limiter fails, the over-temperature protection becomes the only protection mechanism, but it cannot completely cut off power). It also controls the equipment's fan to dissipate heat and reduce the equipment's temperature. At the same time, it alerts the user to the relay and temperature limiter failure, making it easier for maintenance personnel to troubleshoot and repair the fault.

[0012] In an optional implementation, the method further includes: disabling the relay and temperature limiter failure protection operation after detecting that the device is in a power-off state or responding to a user triggering an over-temperature protection exit operation.

[0013] In this embodiment of the invention, when the relay and temperature limiter failure protection is triggered, the protection is only deactivated when the power is cut off. This prevents the equipment from being disconnected due to misoperation or automatic reset, thus avoiding the safety risk of secondary overheating. Alternatively, if the user triggers the over-temperature protection deactivation operation (for example, if the user urgently needs to use the equipment, the user's needs can be prioritized), the inconvenience caused by rigid protection is avoided, and the flexibility of the equipment is improved.

[0014] In an alternative implementation, the method further includes: resetting the currently recorded over-temperature trigger count to zero when the device is detected to be in an operating state, or in response to a trigger count clearing operation.

[0015] In one optional implementation, the device further includes a buzzer, and the over-temperature protection operation further includes: controlling the buzzer to run for a fixed period of time and then stopping the buzzer; the sending of a prompt message to the user indicating that the relay and the temperature limiter have failed includes: controlling the buzzer to run continuously until the relay and temperature limiter failure protection operation is exited.

[0016] This invention uses a buzzer to alert the user that the device is currently in an over-temperature protection state, ensuring that the user can clearly perceive the device malfunction and avoid the inability to use the device normally, thus affecting the user experience.

[0017] Secondly, the present invention provides an over-temperature protection device for equipment, the device comprising: a temperature monitoring module for monitoring the current temperature of the equipment during any operating state, the operating state including at least a working state and a standby state; an over-temperature protection module for triggering an over-temperature protection operation when the current temperature of the equipment is detected to reach a preset over-temperature protection temperature, the over-temperature protection operation including: controlling the load control component of the equipment to disconnect and controlling the fan to perform a heat dissipation operation; and an over-temperature protection exit module for exiting the over-temperature protection operation when the current temperature of the equipment is lower than a preset exit over-temperature protection temperature.

[0018] Thirdly, the present invention provides an electrical device, the electrical device including a controller, the controller including a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the computer instructions to perform the device over-temperature protection method described in the first aspect or any corresponding embodiment.

[0019] In one alternative implementation, the electrical device is a heater. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic flowchart of a first method for over-temperature protection of equipment according to an embodiment of the present invention; Figure 2 This is a flowchart illustrating the triggering of over-temperature protection operation according to an embodiment of the present invention; Figure 3 This is a schematic diagram of a second process for a device over-temperature protection method according to an embodiment of the present invention; Figure 4This is a schematic diagram of the third process of the equipment over-temperature protection method according to an embodiment of the present invention; Figure 5 This is a flowchart illustrating the failure protection operation of the trigger relay and the temperature limiter according to an embodiment of the present invention. Figure 6 This is a structural block diagram of an electrical device according to an embodiment of the present invention; Figure 7 This is a structural example diagram of an electrical device according to an embodiment of the present invention; Figure 8 This is a structural block diagram of an equipment over-temperature protection device according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the hardware structure of the controller according to an embodiment of the present invention. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] According to an embodiment of the present invention, an embodiment of a device over-temperature protection method is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0025] This embodiment provides a device over-temperature protection method, which can be used in the controller of electrical equipment. Figure 1 This is a flowchart of a device over-temperature protection method according to an embodiment of the present invention, such as... Figure 1 As shown, the process includes the following steps: Step S101: Monitor the current temperature of the equipment while it is in any operating state.

[0026] The operating status includes at least the working status and the standby status.

[0027] This invention takes into account that when the power button is pressed after the device has been in operation, the relay will normally disconnect and stop heating, and the fan will stop running. However, if the relay is at risk of sticking and failing, the load will continue to heat up. If the fan stops running at this time, the temperature of the entire device will rise rapidly. Since the fan is not turned on for heat dissipation and the temperature limiter fails simultaneously, there will be a fire hazard. Therefore, this solution not only implements over-temperature protection during operation, but also monitors the current device temperature in real time during any operating state, such as standby. The method of monitoring the current device temperature is not limited; it can be monitored in real time by acquiring the temperature status of a digital temperature sensor or temperature sensor integrated inside the device.

[0028] Step S102: When the current equipment temperature is detected to reach the preset over-temperature protection temperature, the over-temperature protection operation is triggered. The over-temperature protection operation includes: controlling the load control component of the equipment to disconnect and controlling the fan to perform heat dissipation operation.

[0029] like Figure 2 As shown, this embodiment of the invention compares the real-time acquired current equipment temperature with a preset over-temperature protection temperature. The set over-temperature protection temperature is not limited and can be set according to the actual equipment type and safety requirements. For example, the over-temperature protection temperature can be set to 50°C. This is just an example. When the current equipment temperature is detected to reach the preset over-temperature protection temperature, an over-temperature protection operation can be triggered. After entering over-temperature protection mode, all load control components of the equipment can be disconnected, including but not limited to relays controlling heating devices to stop heating, power devices such as thyristors, and the duty cycle output of drive motors. Under over-temperature protection conditions, the load is generally disconnected. This is just an example. Furthermore, to prevent relay and temperature limiter failure... In cases where the overall machine temperature rises rapidly, the fan can be controlled to perform a cooling operation to reduce the risk of overheating through forced heat dissipation. The fan speed can be set according to the actual equipment temperature, with different over-temperature protection ranges and different speed levels for each range. After triggering the over-temperature protection operation, the corresponding speed level can be determined based on the current over-temperature protection range of the equipment temperature. This is just one example. Further, over-temperature protection fault reminders can be displayed, such as the device issuing a voice prompt to alert the user that the device has entered over-temperature protection mode, preventing the device from malfunctioning and affecting the user experience. SMS messages with over-temperature protection fault reminders can also be sent to mobile devices connected to the device via Bluetooth. This is just one example.

[0030] Step S103: When the current equipment temperature is lower than the preset over-temperature protection exit temperature, exit the over-temperature protection operation.

[0031] like Figure 2As shown, in the process of performing over-temperature protection operation, the current equipment temperature can be obtained in real time or read periodically to reduce resource consumption; or when the current equipment temperature is detected to be lower than the preset exit temperature for over-temperature protection, the over-temperature protection operation can be exited. The setting of the exit temperature for over-temperature protection is not limited. Taking 40°C as an example, exiting the over-temperature protection operation may include controlling the fan to stop running or controlling the fan to run at a medium or low speed to maintain the equipment temperature within a safe range. This is just an example.

[0032] The over-temperature protection method provided by this invention monitors the current equipment temperature during any operating state. When the current equipment temperature reaches a preset over-temperature protection temperature, an over-temperature protection operation is triggered. The over-temperature protection operation includes: controlling the load control component of the equipment to disconnect and controlling the fan to perform heat dissipation operation, which can effectively reduce the equipment temperature and ensure that the equipment temperature does not remain too high; and exiting the over-temperature protection operation when the current equipment temperature is lower than the preset exit temperature, thus solving the safety hazard problem of product overheating caused by relay and temperature limiter failure.

[0033] This embodiment provides a device over-temperature protection method, which can be used in the controller of electrical equipment. Figure 3 This is a flowchart of a device over-temperature protection method according to an embodiment of the present invention, such as... Figure 3 As shown, the process includes the following steps: Step S301: Monitor the current temperature of the equipment while it is in any operating state.

[0034] The operating status includes at least the working status and the standby status. For details, please refer to [link to relevant documentation]. Figure 1 Step S101 of the illustrated embodiment will not be described again here.

[0035] Step S302: When the current equipment temperature is detected to reach the preset over-temperature protection temperature, the over-temperature protection operation is triggered. The over-temperature protection operation includes: controlling the load control component of the equipment to disconnect and controlling the fan to perform heat dissipation operation.

[0036] Specifically, the following steps are used to detect if the current equipment temperature has reached the preset over-temperature protection temperature: if the current equipment temperature is greater than the preset over-temperature protection temperature, start timing; if the current equipment temperature is greater than the preset over-temperature protection temperature for a continuous fixed period of time, determine that the current equipment temperature has reached the preset over-temperature protection temperature.

[0037] This invention takes into account that during equipment operation, the temperature is prone to instantaneous overheating due to environmental fluctuations, operational disturbances, and other factors. Therefore, when the current equipment temperature is detected to be higher than the preset overheat protection temperature, the overheat protection operation can be temporarily suspended, and a timing operation can be started immediately to accumulate the continuous overheating duration. If the current equipment temperature is higher than the preset overheat protection temperature within a continuous fixed duration, it can be determined that the current equipment temperature has reached the preset overheat protection temperature. The continuous fixed duration can be set according to the equipment type and equipment safety requirements, and can be within 2 minutes. Taking 10 seconds as an example, the fixed duration can also be set according to the actual operating state of the equipment. For example, when the equipment is in working state, the heating device frequently starts and stops, causing temperature fluctuations, so a longer fixed duration can be set. If the equipment is in standby state, the equipment should be in a low-temperature stable state, and the fixed duration can be shortened to 5 seconds to achieve a rapid response. For industrial heating equipment, due to the slow heating rate and large temperature inertia, the fixed duration can be extended to 30 seconds. This is just an example.

[0038] This invention only determines a true overtemperature when the temperature continuously exceeds the overtemperature protection temperature, thus avoiding equipment shutdown caused by accidental interference and affecting normal user operation.

[0039] Furthermore, the equipment also includes a buzzer, and the over-temperature protection operation includes: controlling the buzzer to run for a fixed period of time and then stopping the buzzer.

[0040] The electrical equipment in this embodiment of the invention also includes a buzzer device. After the over-temperature protection operation is triggered, the buzzer device can be controlled to buzz for a fixed duration (i.e., after the buzzer sounds a few times) and then stop buzzing.

[0041] This invention uses a buzzer to alert the user that the device is currently in an over-temperature protection state, ensuring that the user can clearly perceive the device malfunction and avoid the inability to use the device normally, thus affecting the user experience.

[0042] Step S303: When the current equipment temperature is lower than the preset over-temperature protection exit temperature, exit the over-temperature protection operation.

[0043] Specifically, step S303 above includes: Step S3031: Control the fan to stop running.

[0044] Step S3032: The control device is restored to the operating state before the over-temperature protection was triggered, or the control device enters the standby state.

[0045] In this embodiment of the invention, when the current equipment temperature is detected to be lower than the preset over-temperature protection temperature, the over-temperature protection operation can be exited. Specifically, the fan can be controlled to stop running. Alternatively, the fan can be controlled to run at a medium or low speed to maintain the equipment temperature within a safe range. A gradient deceleration model can also be used to control the fan to stop, such as gradually reducing the speed from the highest speed to medium speed, low speed, and then stopping, to avoid mechanical impact from the sudden stop of the fan causing damage to the motor bearings, etc. The equipment can also be controlled to return to the operating state before the over-temperature protection was triggered after exiting the over-temperature protection, or the equipment can be directly controlled to enter a standby state for power failure and restart, enabling the equipment to restart. This is just an example. Furthermore, a continuous fixed time period can be set, and the over-temperature protection operation will only be exited if the equipment temperature is lower than the preset exit over-temperature protection temperature within the fixed time period, to avoid the instantaneous temperature state affecting the reliability of the equipment.

[0046] After determining that the device has exited over-temperature protection, this invention can control the device to return to its operating state before over-temperature protection, so as to restore the working state and reduce the loss of task interruption, or control the device to enter standby state to build a safe buffer operation after failure and reduce the risk of accidental start.

[0047] This embodiment provides a device over-temperature protection method, which can be used in the controller of electrical equipment. Figure 4 This is a flowchart of a device over-temperature protection method according to an embodiment of the present invention, such as... Figure 4 As shown, the process includes the following steps: Step S401: Monitor the current temperature of the equipment while it is in any operating state.

[0048] The operating status includes at least the working status and the standby status. For details, please refer to [link to relevant documentation]. Figure 3 Step S301 of the illustrated embodiment will not be described again here.

[0049] Step S402: When the current equipment temperature is detected to have reached the preset over-temperature protection temperature, an over-temperature protection operation is triggered. The over-temperature protection operation includes: disconnecting the load control component of the control equipment and controlling the fan to perform heat dissipation operations. For details, please refer to [link to relevant documentation]. Figure 3 Step S302 of the illustrated embodiment will not be described again here.

[0050] Step S403: After triggering the over-temperature protection operation, increase the currently recorded over-temperature protection trigger count. If the increased over-temperature protection trigger count is greater than the preset threshold, trigger the relay and temperature limiter failure protection operation. Triggering the relay and temperature limiter failure protection operation includes: disconnecting the load control component of the control equipment, controlling the fan to perform heat dissipation operation, and sending a prompt message indicating relay and temperature limiter failure to the user.

[0051] like Figure 2As shown, in this embodiment of the invention, after triggering the over-temperature protection operation, the currently recorded number of over-temperature protection triggers can be increased, such as... Figure 5 As shown, if the cumulative number of over-temperature protection triggers exceeds the preset threshold N, the relay and temperature limiter failure protection operation can be triggered. The threshold can be set according to the equipment type and safety requirements, taking a value between 2 and 10 as an example. Specifically, triggering the relay and temperature limiter failure protection operation includes shutting down the load control components of the equipment (including reversible relay shutdown to stop heating), controlling the fan to run continuously to perform heat dissipation operation, and sending a prompt message indicating relay and temperature limiter failure to the user. This is just an example.

[0052] This invention indirectly detects electrical sticking (because the over-temperature protection cannot cut off power normally when the relay is stuck, resulting in frequent triggering of the over-temperature protection) and temperature limiter failure (after the temperature limiter fails, the over-temperature protection becomes the only protection mechanism, but it cannot completely cut off power). It also controls the equipment's fan to dissipate heat and reduce the equipment's temperature. At the same time, it alerts the user to the relay and temperature limiter failure, making it easier for maintenance personnel to troubleshoot and repair the fault.

[0053] In one alternative implementation, the device further includes a buzzer to send a prompt message to the user indicating a failure of the relay and the temperature limiter, including controlling the buzzer to continue operating until the relay and temperature limiter failure protection operation is deactivated.

[0054] The electrical equipment in this embodiment of the invention also includes a buzzer device. When the relay and temperature limiter failure protection operation is entered, the buzzer device can be controlled to run continuously (i.e., keep beeping Bi-Bi) until the relay and temperature limiter failure protection operation is exited. The operating method of the buzzer device is different from the operating method when the over-temperature protection is triggered, so as to distinguish the difference between the two faults and prompt the user that a relay and temperature limiter identification fault has occurred.

[0055] In one alternative implementation, the relay and temperature limiter failure protection operation is deactivated upon detecting that the device is in a power-off state or in response to a user triggering an over-temperature protection exit operation.

[0056] In this embodiment of the invention, when the relay and temperature limiter failure protection is triggered, the protection is only deactivated when the power is cut off. This prevents the equipment from being disconnected due to misoperation or automatic reset, thus avoiding the safety risk of secondary overheating. Alternatively, if the user triggers the over-temperature protection deactivation operation (for example, if the user urgently needs to use the equipment, the user's needs can be prioritized), the inconvenience caused by rigid protection is avoided, and the flexibility of the equipment is improved.

[0057] In one alternative implementation, the currently recorded over-temperature trigger count is cleared to zero when the device is detected to be in operation or in response to a trigger count clearing operation.

[0058] like Figure 5 As shown, in this embodiment of the invention, after detecting that the device has entered the working state, or in response to a trigger count clearing operation, the currently recorded over-temperature trigger count can be cleared to zero. To avoid conflicts between the clearing logic and the over-temperature protection logic, a mutual exclusion mechanism for the clearing operation can be set. When the device is in the over-temperature protection state, the clearing operation is prohibited until the device exits the protection state and resumes normal operation. If a count request operation is detected during the clearing process, the clearing operation can be interrupted, and the over-temperature protection logic can be executed first. The clearing operation can be responded to again after the protection state is lifted, ensuring that the priority of the over-temperature protection logic is higher than that of the clearing operation, and avoiding abnormal data statistics. This is only an example.

[0059] Step S404: When the current equipment temperature is lower than the preset over-temperature protection exit temperature, exit the over-temperature protection operation. For details, please refer to [link to relevant documentation]. Figure 3 Step S303 of the illustrated embodiment will not be described again here.

[0060] This embodiment also provides an electrical device, such as Figure 6 As shown, the electrical device includes a controller 61, which includes a memory and a processor. The memory and the processor are interconnected. The memory stores computer instructions, and the processor executes the computer instructions to perform the above-mentioned over-temperature protection method.

[0061] Specifically, such as Figure 7 As shown, the electrical equipment specifically includes the controller's main control chip, used to run the logic of the entire device; a display module, used for normal interactive display and fault display; a fan, used to blow air to dissipate heat from the entire machine; a buzzer device, used for normal operation prompts and alarm prompts in case of faults; a temperature sensor, used to monitor the temperature changes of the equipment in real time; a relay, used to control the heating load; the heating load is the heating power load of the entire machine, such as heating wires, thermistors (Positive Temperature Coefficient, PTC) electric heaters, etc.; and a temperature limiter, used to trip when the equipment temperature reaches the limit temperature, serving a safety protection function.

[0062] Specifically, there are no restrictions on the type of electrical equipment, such as electric ovens, heaters, fan heaters, electric water heaters, etc., as long as they include heating loads, relays, and thermostats. Take fan heaters as an example.

[0063] This embodiment also provides an over-temperature protection device for equipment, which is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0064] This embodiment provides an over-temperature protection device for equipment, such as... Figure 8 As shown, it includes: a temperature monitoring module 801, used to monitor the current temperature of the device during any operating state, including at least a working state and a standby state; an over-temperature protection module 802, used to trigger an over-temperature protection operation when the current device temperature is detected to reach a preset over-temperature protection temperature, the over-temperature protection operation including: controlling the load control component of the device to disconnect and controlling the fan to perform heat dissipation operation; and an over-temperature protection exit module 803, used to exit the over-temperature protection operation when the current device temperature is lower than a preset exit over-temperature protection temperature.

[0065] In some optional implementations, the current device temperature is detected to have reached the preset over-temperature protection temperature by the following steps: if the current device temperature is greater than the preset over-temperature protection temperature, start timing; if the current device temperature is greater than the preset over-temperature protection temperature for a continuous fixed period of time, determine that the current device temperature has reached the preset over-temperature protection temperature.

[0066] In some optional implementations, the over-temperature protection exit module 803 includes: a fan stop unit for controlling the fan to stop running; and an equipment state switching unit for controlling the equipment to return to the operating state before the over-temperature protection was triggered, or controlling the equipment to enter a standby state.

[0067] In some optional implementations, the equipment over-temperature protection device further includes: a count increment module, used to increase the currently recorded over-temperature protection trigger count after triggering the over-temperature protection operation; and a failure protection operation module, used to trigger a relay and temperature limiter failure protection operation if the increased over-temperature protection trigger count is greater than a preset count threshold, wherein triggering the relay and temperature limiter failure protection operation includes: controlling the load control component of the equipment to disconnect, controlling the fan to perform heat dissipation operation, and sending a prompt message indicating the failure of the relay and temperature limiter to the user.

[0068] In some alternative implementations, the equipment over-temperature protection device further includes an operation exit module, used to exit the relay and temperature limiter failure protection operation after detecting that the equipment is in a power-off state or in response to a user triggering an over-temperature protection exit operation.

[0069] In some optional implementations, the device over-temperature protection device further includes a count reset module, used to reset the currently recorded over-temperature trigger count to zero when the device is detected to be in operation or in response to a trigger count reset operation.

[0070] In some alternative implementations, the device also includes a buzzer, and triggering the over-temperature protection operation further includes: controlling the buzzer to run for a fixed period of time and then stopping the buzzer; sending a prompt message to the user indicating that the relay and temperature limiter have failed includes: controlling the buzzer to run continuously until the relay and temperature limiter failure protection operation is exited.

[0071] The equipment over-temperature protection device provided in this embodiment of the invention can execute the equipment over-temperature protection method provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects for executing the method. Further functional descriptions of the various modules and units described above are the same as in the corresponding embodiments described above, and will not be repeated here.

[0072] Figure 9 This is a schematic diagram of the structure of a controller provided in an embodiment of the present invention.

[0073] The following is a detailed reference. Figure 9 The diagram illustrates a structural schematic suitable for implementing a controller in an embodiment of the present invention. The controller may include a processor (e.g., a central processing unit, graphics processing unit, etc.) 901, which can perform various appropriate actions and processes according to a program stored in read-only memory (ROM) 902 or a program loaded from memory 908 into random access memory (RAM) 903. The RAM 903 also stores various programs and data required for controller operation. The processor 901, ROM 902, and RAM 903 are interconnected via a bus 904. An input / output (I / O) interface 905 is also connected to the bus 904.

[0074] Typically, the following devices can be connected to I / O interface 905: input devices 906 including, for example, touchscreens, touchpads, keyboards, mice, cameras, microphones, accelerometers, gyroscopes, etc.; output devices 907 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; memory devices 908 including, for example, magnetic tapes, hard disks, etc.; and communication devices 909. Communication device 909 allows the controller to communicate wirelessly or wiredly with other devices to exchange data. Although Figure 9 A controller with various devices is shown, but it should be understood that it is not required to implement or have all of the devices shown, and may alternatively implement or have more or fewer devices.

[0075] In particular, according to embodiments of the present invention, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of the present invention include a computer program product comprising a computer program carried on a non-transitory computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device 909, or installed from a memory 908, or installed from a ROM 902. When the computer program is executed by the processor 901, it performs the functions defined in the device over-temperature protection method of the embodiments of the present invention.

[0076] Figure 9 The controller shown is merely an example and should not be construed as limiting the functionality and scope of use of the embodiments of the present invention.

[0077] This invention also provides a computer-readable storage medium. The methods described above according to embodiments of the invention can be implemented in hardware or firmware, or implemented as computer code that can be recorded on a storage medium, or implemented as computer code downloaded via a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and then stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that computers, processors, microprocessor controllers, or programmable hardware include storage components capable of storing or receiving software or computer code. When the software or computer code is accessed and executed by the computer, processor, or hardware, the device over-temperature protection method shown in the above embodiments is implemented.

[0078] A portion of this invention can be applied as a computer program product, such as computer program instructions, which, when executed by a computer, can invoke or provide the methods and / or technical solutions according to the invention through the operation of the computer. Those skilled in the art will understand that the forms in which computer program instructions exist in a computer-readable medium include, but are not limited to, source files, executable files, installation package files, etc. Correspondingly, the ways in which computer program instructions are executed by a computer include, but are not limited to: the computer directly executing the instructions, or the computer compiling the instructions and then executing the corresponding compiled program, or the computer reading and executing the instructions, or the computer reading and installing the instructions and then executing the corresponding installed program. Here, the computer-readable medium can be any available computer-readable storage medium or communication medium accessible to a computer.

[0079] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A method for over-temperature protection of equipment, characterized in that, The method includes: During any operating state of the equipment, the current temperature of the equipment is monitored, and the operating state includes at least the working state and the standby state. When the current device temperature is detected to reach the preset over-temperature protection temperature, an over-temperature protection operation is triggered. The over-temperature protection operation includes: controlling the load control component of the device to disconnect and controlling the fan to perform heat dissipation operation. The over-temperature protection operation will be deactivated when the current equipment temperature is lower than the preset temperature for deactivating over-temperature protection.

2. The method according to claim 1, characterized in that, The following steps are used to detect if the current equipment temperature has reached the preset over-temperature protection temperature: If the current equipment temperature is higher than the preset over-temperature protection temperature, start timing; If the current equipment temperature is higher than the preset over-temperature protection temperature for a continuous fixed period of time, it is determined that the current equipment temperature has reached the preset over-temperature protection temperature.

3. The method according to claim 1, characterized in that, The operation to exit over-temperature protection includes: Control the fan to stop running; The control equipment is restored to the operating state before the over-temperature protection was triggered, or the control equipment enters standby mode.

4. The method according to claim 1, characterized in that, The method further includes: After triggering the over-temperature protection operation, increase the currently recorded number of over-temperature protection triggers; If the increased number of over-temperature protection triggers exceeds a preset threshold, a relay and temperature limiter failure protection operation is triggered. This triggering of the relay and temperature limiter failure protection operation includes: The load control component of the control equipment is disconnected, and the control fan performs heat dissipation operation, sending a prompt message to the user indicating that the relay and temperature limiter have failed.

5. The method according to claim 4, characterized in that, The method further includes: The relay and temperature limiter failure protection operation is deactivated after detecting that the equipment is in a power-off state or responding to the user's triggering of the over-temperature protection exit operation.

6. The method according to claim 4, characterized in that, The method further includes: When the device is detected to be in working condition, or in response to a trigger count clearing operation, the currently recorded over-temperature trigger count is cleared to zero.

7. The method according to claim 4, characterized in that, The device also includes a buzzer, and the over-temperature protection operation further includes: controlling the buzzer to run for a fixed period of time and then stopping the buzzer; sending a prompt message to the user indicating the failure of the relay and the temperature limiter includes: controlling the buzzer to run continuously until the relay and temperature limiter failure protection operation is exited.

8. An over-temperature protection device for equipment, characterized in that, The device includes: The temperature monitoring module is used to monitor the current temperature of the device during any operating state, which includes at least the working state and the standby state. The over-temperature protection module is used to trigger an over-temperature protection operation when the current equipment temperature is detected to reach the preset over-temperature protection temperature. The over-temperature protection operation includes: controlling the load control component of the equipment to disconnect and controlling the fan to perform heat dissipation operation. The over-temperature protection exit module is used to exit the over-temperature protection operation when the current equipment temperature is lower than the preset over-temperature protection exit temperature.

9. An electrical appliance, characterized in that, The electrical device includes a controller, which includes a memory and a processor. The memory and the processor are communicatively connected to each other. The memory stores computer instructions, and the processor executes the computer instructions to perform the device over-temperature protection method according to any one of claims 1 to 7.

10. The electrical equipment according to claim 9, characterized in that, The electrical appliance is a heater.

Images