Electric heater temperature protection method and temperature protection device

Abstract

The present application provides a temperature protection method and a temperature protection device for an electric heater, the method comprising: real-time acquisition of the temperature of the hot air inside the electric heater and the temperature on the surface of the electric heater; if the temperature of the hot air inside the electric heater is greater than a preset first temperature control threshold, triggering the power adjustment of the electric heater; if the temperature on the surface of the electric heater is greater than a preset second temperature control threshold, triggering the overheat protection of the electric heater; if the temperature of the hot air inside the electric heater is greater than a preset third temperature control threshold, and the duration reaches a preset time threshold, triggering the over-temperature fault protection of the electric heater; wherein the second temperature control threshold and the third temperature control threshold are both greater than the first temperature control threshold. The method can accurately control the overheat protection of the electric heater during abnormal / normal use, ensuring the safety and reliability of the electric heater.

Description

Technical Field

[0001] The invention belongs to the technical field of intelligent control, and specifically relates to a temperature protection method and a temperature protection device for an electric heater. Background Art

[0002] As heating products gain market share, users are increasingly experiencing pain points in their daily use and experience. Among these, the safety and reliability of oil-filled electric heaters have become a major industry challenge. The safety of heating products directly impacts the safety of users' lives and property.

[0003] Currently, the temperature protection devices of electric heaters on the market are all installed inside the front shell component of the product. When the user does not use it normally and covers the wool fabric on the back half or middle part of the product, the protection device inside the front shell cannot sense the high temperature, causing the wool fabric on the product to catch fire at high temperature, resulting in a fire accident.

[0004] To address abnormal product testing, traditional oil-filled heaters typically reduce the protection parameters of the manual reset temperature limiter to prevent them from meeting national standards. However, this solution presents the following issues: 1. During normal product use, the temperature limiter's parameter temperature is too low, causing the product to enter false protection mode, leading to the risk of user complaints. 2. During abnormal product use, the temperature limiter can easily enter a power-off protection state, requiring the product to be sent to after-sales service.

[0005] Therefore, there is an urgent need to provide a method for temperature protection of electric heaters to solve the problem that when the electric heater is used in an abnormal covering manner, the electric heater cannot be protected in time, causing fire accidents. At the same time, it can also solve the difficulty of after-sales maintenance caused by frequent protection reports when the electric heater is used in an abnormal manner, ensuring the heating performance of the product while making the product safer and more reliable. Summary of the Invention

[0006] To solve the above problems, an intelligent protection electric heater and an intelligent temperature control method thereof are proposed, which can accurately control the overheating protection of the electric heater during abnormal / normal use to ensure the safety and reliability of the electric heater.

[0007] In a first aspect of the present application, a method for protecting temperature of an electric heater is provided, comprising:

[0008] Real-time collection of the temperature of the hot air inside the electric heater and the temperature of the electric heater surface;

[0009] If the temperature of the hot air inside the electric heater is greater than the preset first temperature control threshold, the power adjustment of the electric heater is triggered;

[0010] If the surface temperature of the electric heater is greater than the preset second temperature control threshold, the overheat protection of the electric heater is triggered;

[0011] If the temperature of the hot air inside the electric heater is greater than the preset third temperature control threshold and the duration reaches the preset time threshold, the over-temperature fault protection of the electric heater is triggered;

[0012] The second temperature control threshold and the third temperature control threshold are both greater than the first temperature control threshold.

[0013] In some embodiments, the overall power regulation of the electric heater includes:

[0014] Lower the overall power of the electric heater;

[0015] After the whole power of the electric heater is lowered, if the temperature of the hot air inside the electric heater drops to the preset first self-reset temperature, the whole power of the electric heater is reset.

[0016] In some embodiments, the overheat protection of the electric heater includes:

[0017] Control the electric heater to cut off power and stop heating;

[0018] After the electric heater is powered off and stops heating, if the temperature of the surface of the electric heater drops to the preset second self-reset temperature, the power supply to the electric heater and the full power of the electric heater are restored.

[0019] In some embodiments, the over-temperature fault protection of the electric heater includes: controlling the electric heater to stop operating.

[0020] In some embodiments, the setting range of the first temperature control threshold is 50-70°C.

[0021] In some embodiments, the setting range of the second temperature control threshold is 130-150°C.

[0022] In some embodiments, the setting range of the third temperature control threshold is 85-100°C.

[0023] A second aspect of the present application provides a temperature protection device, comprising:

[0024] A temperature sensing device is installed inside the front shell assembly of the electric heater and is used to detect the temperature of the hot air inside the electric heater;

[0025] a temperature limiter, for detecting the temperature of the surface of the electric heater;

[0026] The controller is connected to the temperature sensing device and the temperature limiter, and is used to trigger the overall power adjustment of the electric heater when the temperature of the hot air inside the electric heater is greater than the preset first temperature control threshold; trigger the overheating protection of the electric heater when the temperature of the surface of the electric heater is greater than the preset second temperature control threshold; and trigger the over-temperature fault protection of the electric heater when the temperature of the hot air inside the electric heater is greater than the preset third temperature control threshold and the duration reaches the preset time threshold.

[0027] A third aspect of the present application provides an electric heater comprising the intelligent temperature protection device as described above.

[0028] A fourth aspect of the present application provides a storage medium, wherein the computer program stored in the storage medium can be executed by one or more processors to implement the temperature protection method for the electric heater as described above.

[0029] The fifth aspect of the present application provides an electronic device including a memory and a processor, wherein the memory stores a computer program, and the memory and the processor are communicatively connected to each other. When the computer program is executed by the processor, the electric heater temperature protection method as described above is implemented.

[0030] Compared with the prior art, the technical solution of this application has the following advantages or beneficial effects:

[0031] 1. When the heater is operating normally, if the surface temperature of the heater becomes too high, the temperature of the heated air inside the heater rises before the surface temperature. When the temperature of the heated air inside the heater exceeds the preset first temperature control threshold, the heater's overall power adjustment is triggered. This reduces the heater's overall power to a low setting, which in turn lowers the heater's temperature, ensuring that the surface temperature rise meets the 85K requirement of the national safety standard GB4706.

[0032] 2. When the electric heater is not in normal use, that is, when the user covers the electric heater with a cover, the temperature of the hot air inside the electric heater will rise rapidly and reach the first temperature control threshold, thereby triggering the power adjustment of the electric heater as a whole, that is, the power of the electric heater as a whole is reduced to a low gear. As the power of the electric heater continues to output, the temperature of the surface of the electric heater and the temperature of the cover covering the electric heater will also slowly rise. When the temperature of the surface of the electric heater reaches the preset second temperature control threshold, the overheating protection of the electric heater is triggered, that is, the electric heater is controlled to cut off the power and stop heating. Thereafter, when the temperature of the surface of the electric heater drops to the preset second self-reset temperature, the power supply of the electric heater and the full power of the electric heater are restored, and the cycle continues. As time goes by, the temperature of the cover on the electric heater will slowly rise and exceed the preset third temperature control threshold. If the duration reaches the preset time, the over-temperature fault protection of the electric heater is triggered, that is, the electric heater is controlled to stop running, thereby ensuring that the temperature of the cover meets the national standard requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in the relevant field, other drawings can be obtained based on the provided drawings without any creative work.

[0034] Figure 1 This is a flow chart of a temperature protection method for an electric heater provided in Example 1 of the present application;

[0035] Figure 2 This is a flow chart of a temperature protection method for an electric heater provided in Example 2 of the present application;

[0036] Figure 3 This is a temperature curve diagram of each point of normal heating of the electric heater provided in Example 2 of the present application;

[0037] Figure 4 This is a temperature curve diagram of various points during abnormal operation of the electric heater provided in Example 2 of the present application;

[0038] Figure 5 This is a schematic diagram of the structure of the temperature protection device provided in Example 3 of the present application;

[0039] Figure 6 A schematic structural diagram of an electric heater provided in Example 4 of the present application;

[0040] Figure 7 This is a connection block diagram of an electronic device provided in Example 6 of the present application. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The described embodiments should not be regarded as limiting this application. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0042] In the following description, reference is made to “some embodiments”, which describes a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0043] If similar descriptions of "first\second\third" appear in the application documents, the following explanation will be added. In the following description, the terms "first\second\third" are only used to distinguish similar objects and do not represent a specific order for the objects. It can be understood that "first\second\third" can be interchanged with a specific order or sequence where permitted, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein are for the purpose of describing the embodiments of this application only and are not intended to limit this application.

[0045] Example 1

[0046] Currently, the temperature protection devices of electric heaters on the market are all installed inside the front shell component of the product. When the user does not use it normally and covers the wool fabric on the back half or middle part of the product, the protection device inside the front shell cannot sense the high temperature, causing the wool fabric on the product to catch fire at high temperature, resulting in a fire accident.

[0047] To address the issue of abnormal product testing, traditional oil heaters typically reduce the protection parameters of the manual reset temperature limiter to prevent the product from failing to meet national standards. However, this solution has the following issues:

[0048] 1. During normal use, the product may be prone to false protection due to the temperature limiter parameter being too low, leading to the risk of user complaints.

[0049] 2. When the product is not used normally, the temperature limiter will easily enter the power-off protection state, and the product must be reported to after-sales service for repair.

[0050] In order to solve the problem that the electric heater cannot be protected in time when it is used in an abnormal covering manner, causing fire accidents, and at the same time, it can also solve the difficulty of after-sales maintenance caused by frequent protection alarms when the electric heater is used in an abnormal manner, this embodiment provides an electric heater temperature intelligent control method. Figure 1 This is a flow chart of a method for protecting the temperature of an electric heater provided in the first embodiment. Figure 1 As shown, the method of this embodiment includes:

[0051] Step S1: Real-time acquisition of the temperature of the hot air inside the electric heater and the temperature of the surface of the electric heater. The electric heater in this embodiment may be an oil-filled radiator heater.

[0052] In step S2, if the temperature of the hot air inside the electric heater is greater than a preset first temperature control threshold, the power adjustment of the electric heater is triggered.

[0053] In some embodiments, the overall power regulation of the electric heater includes:

[0054] Step S21: lowering the overall power of the electric heater.

[0055] In step S22 , after the whole power of the electric heater is lowered, if the temperature of the hot air inside the electric heater drops to a preset first self-reset temperature, the whole power of the electric heater is reset.

[0056] Step S3: If the surface temperature of the electric heater is greater than a preset second temperature control threshold, overheat protection of the electric heater is triggered, wherein the second temperature control threshold is greater than the first temperature control threshold.

[0057] In some embodiments, the overheat protection of the electric heater includes:

[0058] Step S31: If the surface temperature of the electric heater is greater than the second temperature control threshold, the electric heater is controlled to be powered off and stop heating.

[0059] Step S32: After the electric heater is powered off and stops heating, if the temperature of the surface of the electric heater drops to a preset second self-reset temperature, the power supply of the electric heater and the full power of the electric heater are restored.

[0060] Step S4: If the temperature of the hot air inside the electric heater is greater than a preset third temperature control threshold and the duration reaches a preset time threshold, the over-temperature fault protection of the electric heater is triggered.

[0061] According to the abnormal test requirements in Chapter 19 of GB4706, the temperature rise of the felt strips and cotton cloth covering must be ≤175K within one hour of product operation. If the temperature rise exceeds one hour, it must be ≤150K. Due to abnormal product operation, the temperature of the felt strips covering the product rises rapidly, and it is possible that the temperature will exceed 150K and be less than 175K within one hour.

[0062] In this embodiment, by setting a third temperature control threshold for the temperature of the hot air inside the electric heater, the electric heater can enter an over-temperature fault within one hour when it is not in normal use, thereby terminating the operation of the electric heater, ensuring that the electric heater meets the national standard requirements when it is not in normal use, and solving the problem that the electric heater still does not stop running after one hour of abnormal operation, causing the temperature of the cover to exceed the standard.

[0063] In some embodiments, the over-temperature fault protection of the electric heater includes: controlling the electric heater to stop operating.

[0064] In this embodiment, the second temperature control threshold and the third temperature control threshold are both greater than the first temperature control threshold. Therefore, when the electric heater is heating normally, the temperature on the surface of the electric heater will not reach the preset second temperature control threshold, and the temperature of the hot air inside the electric heater will not reach the preset third temperature control threshold, thereby not triggering the overheating protection of the electric heater and not affecting the normal heating function of the electric heater.

[0065] For example, when the heater is operating normally, if the surface temperature of the heater becomes too high, the temperature of the hot air inside the heater will rise first, along with the surface temperature. When the temperature of the hot air inside the heater exceeds a preset first temperature control threshold, the heater's overall power adjustment is triggered. This reduces the heater's overall power to a low setting, which in turn lowers the heater's temperature, ensuring that the surface temperature rise meets the 85K safety requirement of GB4706.

[0066] For example, when the electric heater is not used normally, that is, when the user covers the electric heater with a cover, the temperature of the hot air inside the electric heater will rise rapidly and reach the first temperature control threshold, thereby triggering the overall power adjustment of the electric heater, that is, the overall power of the electric heater is reduced to low gear operation.

[0067] As the heater continues to output power, the temperature of the heater surface and the covering will gradually rise. When the surface temperature reaches the preset second temperature control threshold, the heater's overheat protection is triggered, which controls the heater to cut off power and stop heating. Thereafter, when the surface temperature drops to the preset second reset temperature, power is restored to the heater and full power is restored, repeating the cycle.

[0068] As time goes by, the temperature of the cover on the electric heater will slowly rise and exceed the preset third temperature control threshold. If the duration reaches the preset time, the over-temperature fault protection of the electric heater will be triggered, that is, the electric heater will be controlled to stop running, thereby ensuring that the temperature of the cover meets the national standard requirements.

[0069] Through the above methods, multiple protections for the electric heater can be achieved, ensuring that the electric heater is safer and more reliable.

[0070] Example 2

[0071] This embodiment provides an intelligent temperature control method for an electric heater. Figure 2 This is a flow chart of an electric heater temperature intelligent control method provided in the second embodiment, such as Figure 2 As shown, the method of this embodiment includes:

[0072] Step S1: Real-time acquisition of the temperature of the hot air inside the electric heater and the temperature of the surface of the electric heater. The electric heater in this embodiment may be an oil-filled radiator heater.

[0073] In step S2, if the temperature of the hot air inside the electric heater is greater than a preset first temperature control threshold, the power adjustment of the electric heater is triggered.

[0074] In some embodiments, the setting range of the first temperature control threshold is 50-70°C.

[0075] In this embodiment, the first temperature control threshold is set to 70°C.

[0076] In some embodiments, the overall power regulation of the electric heater includes:

[0077] Step S21: lowering the overall power of the electric heater.

[0078] In step S22 , after the whole power of the electric heater is lowered, if the temperature of the hot air inside the electric heater drops to a preset first self-reset temperature, the whole power of the electric heater is reset.

[0079] The first self-reset temperature is lower than the first temperature control threshold. In this embodiment, the first self-reset temperature is set to 68°C.

[0080] Step S3: If the surface temperature of the electric heater is greater than a preset second temperature control threshold, overheat protection of the electric heater is triggered, wherein the second temperature control threshold is greater than the first temperature control threshold.

[0081] In some embodiments, the setting range of the second temperature control threshold is 130-150°C.

[0082] In this embodiment, the second temperature control threshold is set to 140°C.

[0083] In some embodiments, the overheat protection of the electric heater includes:

[0084] Step S31: If the surface temperature of the electric heater is greater than the second temperature control threshold, the electric heater is controlled to be powered off and stop heating.

[0085] Step S32: After the electric heater is powered off and stops heating, if the temperature of the surface of the electric heater drops to a preset second self-reset temperature, the power supply of the electric heater and the full power of the electric heater are restored.

[0086] The second self-reset temperature is lower than the second temperature control threshold. In this embodiment, the second self-reset temperature is set to 125°C.

[0087] Step S4: If the temperature of the hot air inside the electric heater is greater than a preset third temperature control threshold and the duration reaches a preset time threshold, the over-temperature fault protection of the electric heater is triggered.

[0088] In some embodiments, the setting range of the third temperature control threshold is 85-100°C.

[0089] In this embodiment, the third temperature control threshold is set to 85°C.

[0090] According to the abnormal test requirements in Chapter 19 of GB4706, the temperature rise of the felt strips and cotton cloth covering must be ≤175K within one hour of product operation. If the temperature rise exceeds one hour, it must be ≤150K. Due to abnormal product operation, the temperature of the felt strips covering the product rises rapidly, and it is possible that the temperature will exceed 150K and be less than 175K within one hour.

[0091] In this embodiment, by setting a third temperature control threshold for the temperature of the hot air inside the electric heater, the electric heater can enter an over-temperature fault within one hour when it is not in normal use, thereby terminating the operation of the electric heater, ensuring that the electric heater meets the national standard requirements when it is not in normal use, and solving the problem that the electric heater still does not stop running after one hour of abnormal operation, causing the temperature of the cover to exceed the standard.

[0092] In some embodiments, the over-temperature fault protection of the electric heater includes: controlling the electric heater to stop operating.

[0093] In this embodiment, the preset time threshold is 3 minutes.

[0094] In this embodiment, the second temperature control threshold and the third temperature control threshold are both greater than the first temperature control threshold. Therefore, when the electric heater is heating normally, the temperature on the surface of the electric heater will not reach the preset second temperature control threshold, and the temperature of the hot air inside the electric heater will not reach the preset third temperature control threshold, thereby not triggering the overheating protection of the electric heater and not affecting the normal heating function of the electric heater.

[0095] For example, the electric heater is turned on and the startup ambient temperature of the electric heater is detected. If the startup ambient temperature of the electric heater is lower than 19°C, the electric heater is controlled at a low temperature; if the startup temperature of the electric heater reaches 19°C, the electric heater starts to work stably and intelligent control of the electric heater temperature is started.

[0096] When the electric heater is heating normally, Figure 3 As shown, when the temperature on the surface of the electric heater is too high, the temperature of the hot air inside the electric heater will first rise with the temperature on the surface of the electric heater. When the temperature of the hot air inside the electric heater reaches 70°C, the power adjustment of the electric heater is triggered. That is, the power of the electric heater is reduced to a low gear, and then the heating temperature of the electric heater will be relatively lower. When the temperature of the hot air inside the electric heater drops to 68°C, the power of the electric heater is reset. In this way, the temperature of the electric heater is dynamically maintained near the preset first temperature control threshold (70°C), thereby ensuring that the temperature rise on the surface of the electric heater meets the national standard GB4706 safety rule 85K requirement.

[0097] When the electric heater is not in normal use, that is, when the user covers the electric heater with felt strips of cotton cloth, such as Figure 4 As shown, the temperature of the hot air inside the electric heater will rise rapidly. When it reaches 70°C, the overall power adjustment of the electric heater is triggered, that is, the overall power of the electric heater is controlled to drop to low gear operation.

[0098] As the heater continues to operate at low power, the temperature of the heater surface and the temperature of the felt covering it gradually rises. When the heater surface temperature reaches 140°C, the heater's overheat protection is triggered, which cuts off the power and stops heating. Afterwards, when the heater surface temperature drops to 125°C, power is restored to the heater and full power is restored, repeating the cycle.

[0099] As time goes by, the temperature of the felt cotton cloth on the electric heater will slowly rise to over 85°C. If this lasts for three minutes, the over-temperature fault protection of the electric heater will be triggered, which will control the electric heater to stop running, thereby ensuring that the temperature of the covering meets the national standard requirements.

[0100] Through the above methods, multiple protections for the electric heater can be achieved, ensuring that the electric heater is safer and more reliable.

[0101] Example 3

[0102] This embodiment provides a temperature protection device 320 for executing the method embodiment of the present application. For details not disclosed in the embodiment of the system, please refer to the method embodiment of the present application. Figure 5 This is a schematic diagram of the structure of the temperature protection device 320 provided in the embodiment of the present application, as shown in FIG. Figure 5 The temperature protection device 320 includes:

[0103] The temperature sensing device 321 is installed inside the front shell assembly of the electric heater and is used to detect the temperature of the hot air inside the electric heater. The electric heater in this embodiment can be an oil-filled electric heater.

[0104] In some embodiments, the temperature sensing device 321 is a temperature sensing package.

[0105] The temperature limiter 322 is provided on the surface of the electric heater and is used to detect the temperature of the surface of the electric heater.

[0106] The controller 323 is connected to the temperature sensing device 321 and the temperature limiter 322 and is configured to trigger power regulation of the electric heater when the temperature of the hot air inside the electric heater exceeds a preset first temperature control threshold; trigger overheat protection of the electric heater when the temperature of the electric heater surface exceeds a preset second temperature control threshold; and trigger overtemperature fault protection of the electric heater when the temperature of the hot air inside the electric heater exceeds a preset third temperature control threshold and the duration of the temperature exceeds a preset time threshold. The second and third temperature control thresholds are both greater than the first temperature control threshold.

[0107] The controller 323 includes an acquisition module, a first temperature control module, a second temperature control module, and a third temperature control module.

[0108] The acquisition module is used to acquire the temperature of the hot air inside the electric heater and the temperature of the surface of the electric heater in real time.

[0109] The first temperature control module is used to trigger the whole-machine power adjustment of the electric heater if the temperature of the hot air inside the electric heater is greater than a preset first temperature control threshold.

[0110] The whole-machine power adjustment of the electric heater includes: lowering the whole-machine power of the electric heater; after lowering the whole-machine power of the electric heater, if the temperature of the hot air inside the electric heater drops to a preset first self-reset temperature, resetting the whole-machine power of the electric heater.

[0111] In some embodiments, the setting range of the first temperature control threshold is 50-70°C.

[0112] In this embodiment, the first temperature control threshold is set to 70°C.

[0113] The first self-reset temperature is lower than the first temperature control threshold. In this embodiment, the first self-reset temperature is set to 68°C.

[0114] The second temperature control module is used to trigger overheat protection of the electric heater if the surface temperature of the electric heater is greater than a preset second temperature control threshold, wherein the second temperature control threshold is greater than the first temperature control threshold.

[0115] Among them, the overheating protection of the electric heater includes: controlling the electric heater to cut off power and stop heating; after the electric heater is cut off power and stops heating, if the temperature of the surface of the electric heater drops to a preset second self-reset temperature, the power supply of the electric heater and the full power of the electric heater are restored.

[0116] In some embodiments, the setting range of the second temperature control threshold is 130-150°C.

[0117] In this embodiment, the second temperature control threshold is set to 140°C.

[0118] The second self-reset temperature is lower than the second temperature control threshold. In this embodiment, the second self-reset temperature is set to 125°C.

[0119] The third temperature control module is configured to trigger over-temperature fault protection of the electric heater if the temperature of the hot air inside the electric heater is greater than a preset third temperature control threshold and the duration reaches a preset time threshold, wherein the third temperature control threshold is greater than the first temperature control threshold.

[0120] The over-temperature fault protection of the electric heater includes: controlling the electric heater to stop running.

[0121] According to the abnormal test requirements in Chapter 19 of GB4706, the temperature rise of the felt strips and cotton cloth covering must be ≤175K within one hour of product operation. If the temperature rise exceeds one hour, it must be ≤150K. Due to abnormal product operation, the temperature of the felt strips covering the product rises rapidly, and it is possible that the temperature will exceed 150K and be less than 175K within one hour.

[0122] In this embodiment, by setting a third temperature control threshold for the temperature of the hot air inside the electric heater, the electric heater can enter an over-temperature fault within one hour when it is not in normal use, thereby terminating the operation of the electric heater, ensuring that the electric heater meets the national standard requirements when it is not in normal use, and solving the problem that the electric heater still does not stop running after one hour of abnormal operation, causing the temperature of the cover to exceed the standard.

[0123] In some embodiments, the setting range of the third temperature control threshold is 85-100°C.

[0124] In this embodiment, the third temperature control threshold is set to 85°C.

[0125] In this embodiment, the preset time threshold is 3 minutes.

[0126] In this embodiment, the second temperature control threshold and the third temperature control threshold are both greater than the first temperature control threshold. Therefore, when the electric heater is heating normally, the temperature on the surface of the electric heater will not reach the preset second temperature control threshold, and the temperature of the hot air inside the electric heater will not reach the preset third temperature control threshold, thereby not triggering the overheating protection of the electric heater and not affecting the normal heating function of the electric heater.

[0127] For example, when the electric heater is turned on, the temperature protection device 320 detects the startup ambient temperature of the electric heater. If the startup ambient temperature of the electric heater is lower than 19°C, the electric heater is controlled at a low temperature; if the startup temperature of the electric heater reaches 19°C, the electric heater starts to work stably and starts to intelligently control the temperature of the electric heater.

[0128] When the electric heater is heating normally, if the temperature on the surface of the electric heater is too high, the temperature of the hot air inside the electric heater will rise first along with the temperature on the surface of the electric heater. When the temperature of the hot air inside the electric heater reaches 70°C, the overall power adjustment of the electric heater is triggered. The first temperature control module reduces the overall power of the electric heater to low gear operation, and then the heating temperature of the electric heater will be relatively lower. When the temperature of the hot air inside the electric heater is as low as 68°C, the first temperature control module resets the overall power of the electric heater. In this way, the temperature of the electric heater is dynamically maintained near the preset first temperature control threshold (70°C), thereby ensuring that the temperature rise on the surface of the electric heater meets the national standard GB4706 safety rule 85K requirements.

[0129] When the electric heater is not used normally, that is, when the user covers the electric heater with a cover, the temperature of the hot air inside the electric heater will rise rapidly to 70°C, thereby triggering the overall power adjustment of the electric heater, that is, the first temperature control module controls the overall power of the electric heater to drop to low gear operation.

[0130] As the heater continues to output low power, the temperature of the heater surface and the covering gradually rises. When the heater surface temperature reaches 140°C, the heater's overheat protection is triggered, and the second temperature control module controls the heater to cut off power and stop heating. Subsequently, when the heater surface temperature drops to 125°C, the second temperature control module restores power to the heater and restores full power, repeating the cycle.

[0131] As time goes by, the temperature of the cover on the electric heater will slowly rise to over 85°C. If the duration reaches three minutes, the over-temperature fault protection of the electric heater will be triggered, that is, the third temperature control module will control the electric heater to stop running, thereby ensuring that the temperature of the cover meets the national standard requirements.

[0132] Example 4

[0133] This embodiment provides an electric heater, Figure 6 A schematic diagram of the structure of an electric heater 300 provided in an embodiment of the present application is shown in FIG. Figure 6 As shown. The intelligent protection electric heater 300 provided in this embodiment includes an electric heater body 310 and a temperature protection device 320. The temperature protection device 320 can be used to execute the method embodiment of this application. For details not disclosed in the embodiment of this system, please refer to the method embodiment of this application. The electric heater body 310 in this embodiment may refer to an oil-filled electric heater. The temperature protection device 320 includes a temperature sensing device 321, a temperature limiter 322 and a controller 323.

[0134] The temperature sensing device 321 is disposed inside the front shell assembly of the electric heater body 310 and is used to detect the temperature of the hot air inside the electric heater body 310 .

[0135] In some embodiments, the temperature sensing device 321 is a temperature sensing package.

[0136] The temperature limiter 322 is disposed on the surface of the electric heater body 310 and is used to detect the temperature of the surface of the electric heater body 310 .

[0137] The controller 323 is connected to the temperature sensing device 321 and the temperature limiter 322, and is configured to trigger power regulation of the electric heater when the temperature of the hot air inside the electric heater exceeds a preset first temperature control threshold; trigger overheat protection of the electric heater when the temperature of the electric heater surface exceeds a preset second temperature control threshold; and trigger overtemperature fault protection of the electric heater when the temperature of the hot air inside the electric heater exceeds a preset third temperature control threshold and the duration exceeds a preset time threshold. The second and third temperature control thresholds are both greater than the first temperature control threshold.

[0138] The controller 323 includes an acquisition module, a first temperature control module, a second temperature control module, and a third temperature control module.

[0139] The acquisition module is used to acquire the temperature of the hot air inside the electric heater body 310 and the temperature of the surface of the electric heater body 310 in real time.

[0140] The first temperature control module is used to trigger the whole power adjustment of the electric heater body 310 if the temperature of the hot air inside the electric heater body 310 is greater than a preset first temperature control threshold.

[0141] The whole power adjustment of the electric heater body 310 includes:

[0142] If the temperature of the hot air inside the electric heater body 310 is greater than the first temperature control threshold, the entire power of the electric heater body 310 is reduced.

[0143] After the whole power of the electric heater body 310 is lowered, if the temperature of the hot air inside the electric heater body 310 drops to the preset first self-reset temperature, the whole power of the electric heater body 310 is reset.

[0144] In some embodiments, the setting range of the first temperature control threshold is 50-70°C.

[0145] In this embodiment, the first temperature control threshold is set to 70°C.

[0146] The first self-reset temperature is lower than the first temperature control threshold. In this embodiment, the first self-reset temperature is set to 68°C.

[0147] The second temperature control module is used to trigger overheat protection of the electric heater body 310 if the surface temperature of the electric heater body 310 is greater than a preset second temperature control threshold, wherein the second temperature control threshold is greater than the first temperature control threshold.

[0148] Among them, the overheating protection of the electric heater body 310 includes: controlling the electric heater body 310 to cut off power and stop heating; after the electric heater body 310 cuts off power and stops heating, if the temperature of the surface of the electric heater body 310 drops to a preset second self-reset temperature, the power supply of the electric heater body 310 and the full power of the electric heater body 310 are restored.

[0149] In some embodiments, the setting range of the second temperature control threshold is 130-150°C.

[0150] In this embodiment, the second temperature control threshold is set to 140°C.

[0151] The second self-reset temperature is lower than the second temperature control threshold. In this embodiment, the second self-reset temperature is set to 125°C.

[0152] The third temperature control module is used to trigger over-temperature fault protection of the electric heater body 310 if the temperature of the hot air inside the electric heater body 310 is greater than a preset third temperature control threshold and the duration reaches a preset time threshold. The third temperature control threshold is greater than the first temperature control threshold.

[0153] The over-temperature fault protection of the electric heater body 310 includes: controlling the electric heater body 310 to stop running.

[0154] According to the abnormal test requirements in Chapter 19 of GB4706, the temperature rise of the felt strips and cotton cloth covering must be ≤175K within one hour of product operation. If the temperature rise exceeds one hour, it must be ≤150K. Due to abnormal product operation, the temperature of the felt strips covering the product rises rapidly, and it is possible that the temperature will exceed 150K and be less than 175K within one hour.

[0155] In this embodiment, by setting a third temperature control threshold for the temperature of the hot air inside the electric heater body 310, the electric heater body 310 can enter an over-temperature fault within one hour when it is not in normal use, thereby terminating the operation of the electric heater body 310, ensuring that the electric heater body 310 meets the national standard requirements when it is not in normal use, and solving the problem that the electric heater body 310 still does not stop running after one hour of abnormal operation, causing the temperature rise of the cover to exceed the standard.

[0156] In some embodiments, the setting range of the third temperature control threshold is 85-100°C.

[0157] In this embodiment, the third temperature control threshold is set to 85°C.

[0158] In this embodiment, the preset time threshold is 3 minutes.

[0159] In this embodiment, the second temperature control threshold and the third temperature control threshold are both greater than the first temperature control threshold. Therefore, when the electric heater body 310 is heating normally, the temperature of the surface of the electric heater body 310 will not reach the preset second temperature control threshold, and the temperature of the hot air inside the electric heater body 310 will not reach the preset third temperature control threshold, thereby not triggering the overheating protection of the electric heater body 310, and not affecting the normal heating function of the electric heater body 310.

[0160] For example, when the electric heater is turned on, the temperature protection device 320 detects the startup ambient temperature of the electric heater. If the startup ambient temperature of the electric heater is lower than 19°C, the electric heater is controlled at a low temperature; if the startup temperature of the electric heater reaches 19°C, the electric heater starts to work stably and starts to intelligently control the temperature of the electric heater.

[0161] When the electric heater body 310 is heating normally, when the temperature of the surface of the electric heater body 310 is too high, the temperature of the hot air inside the electric heater body 310 will first rise with the temperature of the surface of the electric heater body 310. When the temperature of the hot air inside the electric heater body 310 reaches 70°C, the overall power adjustment of the electric heater body 310 is triggered. The first temperature control module reduces the overall power of the electric heater body 310 to low gear operation, and then the heating temperature of the electric heater body 310 will be relatively reduced. When the temperature of the hot air inside the electric heater body 310 is as low as 68°C, the first temperature control module resets the overall power of the electric heater body 310. In this way, the temperature of the electric heater body 310 is dynamically maintained near the preset first temperature control threshold (70°C), thereby ensuring that the temperature rise on the surface of the electric heater body 310 meets the national standard GB4706 safety rule 85K requirement.

[0162] When the electric heater body 310 is not in normal use, that is, when the user covers the electric heater body 310 with a cover, the temperature of the hot air inside the electric heater body 310 will rise rapidly to 70°C, thereby triggering the overall power adjustment of the electric heater body 310, that is, the first temperature control module controls the overall power of the electric heater body 310 to drop to low gear operation.

[0163] As the electric heater body 310 continues to output low-power, the temperature of the surface of the electric heater body 310 and the temperature of the covering on the electric heater body 310 will gradually rise. When the surface temperature of the electric heater body 310 reaches 140°C, the overheat protection of the electric heater body 310 is triggered, that is, the second temperature control module controls the electric heater body 310 to cut off power and stop heating. Thereafter, when the surface temperature of the electric heater body 310 drops to 125°C, the second temperature control module restores power to the electric heater body 310 and restores full power to the electric heater body 310, and the cycle continues.

[0164] As time goes by, the temperature of the cover on the electric heater will slowly rise to over 85°C. If the duration reaches three minutes, the over-temperature fault protection of the electric heater body 310 will be triggered, that is, the third temperature control module will control the electric heater body 310 to stop running, thereby ensuring that the temperature of the cover meets the national standard requirements.

[0165] Example 5

[0166] This embodiment further provides a computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium. When the computer program is executed by a processor, the method steps in the above embodiment can be implemented:

[0167] Step S1: Real-time acquisition of the temperature of the hot air inside the electric heater and the temperature of the surface of the electric heater. The electric heater in this embodiment may be an oil-filled radiator heater.

[0168] In step S2, if the temperature of the hot air inside the electric heater is greater than a preset first temperature control threshold, the power adjustment of the electric heater is triggered.

[0169] In some embodiments, the setting range of the first temperature control threshold is 50-70°C.

[0170] In this embodiment, the first temperature control threshold is set to 70°C.

[0171] In some embodiments, the overall power regulation of the electric heater includes:

[0172] Step S21: lowering the overall power of the electric heater.

[0173] In step S22 , after the whole power of the electric heater is lowered, if the temperature of the hot air inside the electric heater drops to a preset first self-reset temperature, the whole power of the electric heater is reset.

[0174] The first self-reset temperature is lower than the first temperature control threshold. In this embodiment, the first self-reset temperature is set to 68°C.

[0175] Step S3: If the surface temperature of the electric heater is greater than a preset second temperature control threshold, overheat protection of the electric heater is triggered, wherein the second temperature control threshold is greater than the first temperature control threshold.

[0176] In some embodiments, the setting range of the second temperature control threshold is 130-150°C.

[0177] In this embodiment, the second temperature control threshold is set to 140°C.

[0178] In some embodiments, the overheat protection of the electric heater includes:

[0179] Step S31, controlling the electric heater to cut off power and stop heating.

[0180] Step S32: After the electric heater is powered off and stops heating, if the temperature of the surface of the electric heater drops to a preset second self-reset temperature, the power supply of the electric heater and the full power of the electric heater are restored.

[0181] The second self-reset temperature is lower than the second temperature control threshold. In this embodiment, the second self-reset temperature is set to 125°C.

[0182] Step S4: If the temperature of the hot air inside the electric heater is greater than a preset third temperature control threshold and the duration reaches a preset time threshold, the over-temperature fault protection of the electric heater is triggered.

[0183] In some embodiments, the setting range of the third temperature control threshold is 85-100°C.

[0184] In this embodiment, the third temperature control threshold is set to 85°C.

[0185] According to the abnormal test requirements in Chapter 19 of GB4706, the temperature rise of the felt strips and cotton cloth covering must be ≤175K within one hour of product operation. If the temperature rise exceeds one hour, it must be ≤150K. Due to abnormal product operation, the temperature of the felt strips covering the product rises rapidly, and it is possible that the temperature will exceed 150K and be less than 175K within one hour.

[0186] In this embodiment, by setting a third temperature control threshold for the temperature of the hot air inside the electric heater, the electric heater can enter an over-temperature fault within one hour when it is not in normal use, thereby terminating the operation of the electric heater, ensuring that the electric heater meets the national standard requirements when it is not in normal use, and solving the problem that the electric heater still does not stop running after one hour of abnormal operation, causing the temperature of the cover to exceed the standard.

[0187] In some embodiments, the over-temperature fault protection of the electric heater includes: controlling the electric heater to stop operating.

[0188] In this embodiment, the preset time threshold is 3 minutes.

[0189] Computer-readable storage media may also include computer programs, data files, data structures, etc., individually or in combination. The computer-readable storage medium or computer program may be specifically designed and understood by those skilled in the art of computer software, or the computer-readable storage medium may be well-known and available to those skilled in the art of computer software. Examples of computer-readable storage media include: magnetic media, such as hard disks, floppy disks, and magnetic tapes; optical media, such as CDROMs and DVDs; magneto-optical media, such as optical disks; and hardware devices specifically configured to store and execute computer programs, such as read-only memory (ROM), random access memory (RAM), flash memory; or servers, app stores, etc. Examples of computer programs include machine code (e.g., code generated by a compiler) and files containing higher-level code that can be executed by a computer using an interpreter. The described hardware devices can be configured to function as one or more software modules to perform the operations and methods described above, and vice versa. In addition, computer-readable storage media can be distributed across networked computer systems, allowing program code or computer programs to be stored and executed in a decentralized manner.

[0190] Example 6

[0191] Figure 7 A connection block diagram of an electronic device provided in an embodiment of the present application, such as Figure 7 As shown, the electronic device 400 may include: one or more processors 410 , a memory 420 , a multimedia component 430 , an input / output (I / O) interface 440 , and a communication component 450 .

[0192] The processor 410 is configured to execute all or part of the steps in the method of embodiment 1:

[0193] Step S1 , collecting the temperature of the hot air inside the electric heater and the temperature of the surface of the electric heater in real time.

[0194] In step S2, if the temperature of the hot air inside the electric heater is greater than a preset first temperature control threshold, the power adjustment of the electric heater is triggered.

[0195] In some embodiments, the setting range of the first temperature control threshold is 50-70°C.

[0196] In this embodiment, the first temperature control threshold is set to 70°C.

[0197] In some embodiments, the overall power regulation of the electric heater includes:

[0198] In step S21 , if the temperature of the hot air inside the electric heater is greater than the first temperature control threshold, the power of the electric heater is reduced.

[0199] In step S22 , after the whole power of the electric heater is lowered, if the temperature of the hot air inside the electric heater drops to a preset first self-reset temperature, the whole power of the electric heater is reset.

[0200] The first self-reset temperature is lower than the first temperature control threshold. In this embodiment, the first self-reset temperature is set to 68°C.

[0201] Step S3: If the surface temperature of the electric heater is greater than a preset second temperature control threshold, overheat protection of the electric heater is triggered, wherein the second temperature control threshold is greater than the first temperature control threshold.

[0202] In some embodiments, the setting range of the second temperature control threshold is 130-150°C.

[0203] In this embodiment, the second temperature control threshold is set to 140°C.

[0204] In some embodiments, the overheat protection of the electric heater includes:

[0205] Step S31, controlling the electric heater to cut off power and stop heating.

[0206] Step S32: After the electric heater is powered off and stops heating, if the temperature of the surface of the electric heater drops to a preset second self-reset temperature, the power supply of the electric heater and the full power of the electric heater are restored.

[0207] The second self-reset temperature is lower than the second temperature control threshold. In this embodiment, the second self-reset temperature is set to 125°C.

[0208] Step S4: If the temperature of the hot air inside the electric heater is greater than a preset third temperature control threshold and the duration reaches a preset time threshold, the over-temperature fault protection of the electric heater is triggered.

[0209] In some embodiments, the setting range of the third temperature control threshold is 85-100°C.

[0210] In this embodiment, the third temperature control threshold is set to 85°C.

[0211] According to the abnormal test requirements in Chapter 19 of GB4706, the temperature rise of the felt strips and cotton cloth covering must be ≤175K within one hour of product operation. If the temperature rise exceeds one hour, it must be ≤150K. Due to abnormal product operation, the temperature of the felt strips covering the product rises rapidly, and it is possible that the temperature will exceed 150K and be less than 175K within one hour.

[0212] In this embodiment, by setting a third temperature control threshold for the temperature of the hot air inside the electric heater, the electric heater can enter an over-temperature fault within one hour when it is not in normal use, thereby terminating the operation of the electric heater, ensuring that the electric heater meets the national standard requirements when it is not in normal use, and solving the problem that the electric heater still does not stop running after one hour of abnormal operation, causing the temperature of the cover to exceed the standard.

[0213] In some embodiments, the over-temperature fault protection of the electric heater includes:

[0214] If the temperature of the hot air inside the electric heater is greater than the third temperature control threshold and the duration reaches the preset time threshold, the electric heater is controlled to terminate operation.

[0215] In this embodiment, the preset time threshold is 3 minutes.

[0216] The memory 420 is used to store various types of data, which may include, for example, instructions of any application or method in the electronic device, and data related to the application.

[0217] The processor 410 can be implemented by an application specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a controller, a microcontroller, a microprocessor or other electronic components, and is used to execute the methods in the above embodiments.

[0218] The memory 420 can be implemented by any type of volatile or non-volatile memory device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0219] The multimedia component 430 may include a screen and an audio component. The screen may be a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signals may be further stored in a memory or transmitted via a communication component. The audio component also includes at least one speaker for outputting audio signals.

[0220] The I / O interface 440 provides an interface between the processor 410 and other interface modules, which may be a keyboard, a mouse, buttons, etc. These buttons may be virtual buttons or physical buttons.

[0221] The communication component 450 is used for wired or wireless communication between the electronic device 400 and other devices.

[0222] Wired communication includes communication via an Ethernet port, a serial port, etc.; wireless communication includes Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, 5G, or a combination thereof. Accordingly, the communication component 415 may include a Wi-Fi module, a Bluetooth module, and an NFC module.

[0223] It should also be understood that the method or system disclosed in the embodiments provided in this application may also be implemented in other ways. The method or system embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architectures, functions, and operations of the methods and devices according to the various embodiments of the present application. In this regard, each box in the flowchart or block diagram may represent a module, a computer program segment, or a portion of a computer program, and the module, computer program segment, or a portion of a computer program includes one or more computer programs for implementing a specified logical function.

[0224] It should also be noted that in some alternative implementations, the functions noted in the blocks may occur in a different order than that noted in the drawings, and may in fact be performed substantially in parallel, or may sometimes be performed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flow charts, and combinations of blocks in the block diagrams and / or flow charts, may be implemented by a dedicated hardware-based system that performs the specified functions or actions, or may be implemented by a combination of dedicated hardware and computer programs.

[0225] In this application, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed or that are inherent to such process, method, article, or apparatus. In the absence of further restrictions, the elements defined by the sentence "including a..." do not exclude the existence of other identical elements in the process, method, device or equipment including the elements; if there is a description of "first", "second", etc., it is only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features; in the description of this application, unless otherwise specified, the terms "multiple" and "many" mean at least two; if there is a description of a server, it should be noted that the server can be an independent physical server or terminal, or a server cluster composed of multiple physical servers, or a cloud server that can provide basic cloud computing services such as cloud servers, cloud databases, cloud storage and CDN; if there is a description of a smart terminal or mobile device in this application, it should be noted that the smart terminal or mobile device can be a mobile phone, tablet computer, smart watch, netbook, wearable electronic device, personal digital assistant (PDA), augmented reality technology device (AR), virtual reality device (VR), smart TV, smart speaker, personal computer (PC) Computer, PC), etc., but not limited thereto. This application does not specifically limit the specific form of the smart terminal or mobile device.

[0226] Finally, it should be noted that, in the description of this specification, reference to the terms "one embodiment," "some embodiments," "example," "an example," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any appropriate manner in any one or more embodiments or examples.

[0227] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and the contents described are only embodiments adopted to facilitate understanding of the present application and are not intended to limit the present application. Any person skilled in the art of the present application may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in the present application, but the scope of protection of the present application shall still be based on the scope defined by the appended claims.

Claims

1. A temperature protection method for an electric heater, characterized in that: include: Real-time collection of the temperature of the hot air inside the electric heater and the temperature of the electric heater surface; If the temperature of the hot air inside the electric heater is greater than the preset first temperature control threshold, the power adjustment of the electric heater is triggered; If the temperature of the surface of the electric heater is greater than a preset second temperature control threshold, the overheat protection of the electric heater is triggered, and the overheat protection of the electric heater includes: controlling the electric heater to cut off power and stop heating; after the electric heater is cut off and stops heating, if the temperature of the surface of the electric heater drops to a preset second self-reset temperature, restoring power to the electric heater and restoring full power of the entire electric heater; If the temperature of the hot air inside the electric heater is greater than the preset third temperature control threshold and the duration reaches the preset time threshold, the over-temperature fault protection of the electric heater is triggered, and the over-temperature fault protection of the electric heater includes: controlling the electric heater to stop running; The second temperature control threshold and the third temperature control threshold are both greater than the first temperature control threshold, and the second temperature control threshold is greater than the third temperature control threshold.

2. The method according to claim 1, characterized in that The whole-unit power regulation of the electric heater includes: Lower the overall power of the electric heater; After the whole power of the electric heater is lowered, if the temperature of the hot air inside the electric heater drops to the preset first self-reset temperature, the whole power of the electric heater is reset.

3. The method according to claim 1, characterized in that The setting range of the first temperature control threshold is 50~70℃.

4. The method according to claim 1, wherein The setting range of the second temperature control threshold is 130~150℃.

5. The method according to claim 1, wherein The setting range of the third temperature control threshold is 85~100℃.

6. A temperature protection device, characterized in that: include: A temperature sensing device is installed inside the front shell assembly of the electric heater and is used to detect the temperature of the hot air inside the electric heater; a temperature limiter, for detecting the temperature of the surface of the electric heater; a controller connected to the temperature sensing device and the temperature limiter, and configured to trigger power regulation of the electric heater when the temperature of the hot air inside the electric heater is greater than a preset first temperature control threshold; When the temperature on the surface of the electric heater is greater than a preset second temperature control threshold, the overheat protection of the electric heater is triggered. The overheat protection of the electric heater includes: controlling the electric heater to cut off power and stop heating; after the electric heater is cut off and stops heating, if the temperature on the surface of the electric heater drops to a preset second self-reset temperature, the power supply of the electric heater and the full power of the entire unit of the electric heater are restored; when the temperature of the hot air inside the electric heater is greater than a preset third temperature control threshold and the duration reaches a preset time threshold, the over-temperature fault protection of the electric heater is triggered. The over-temperature fault protection of the electric heater includes: controlling the electric heater to terminate operation, wherein the second temperature control threshold and the third temperature control threshold are both greater than the first temperature control threshold, and the second temperature control threshold is greater than the third temperature control threshold.

7. An electric heater, characterized in that: Includes the temperature protection device according to claim 6.

8. A computer-readable storage medium, characterized in that The computer program stored in the computer-readable storage medium, when executed by one or more processors, implements the temperature protection method for an electric heater according to any one of claims 1 to 5.

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