Safety temperature control method and thermostat for heater

Abstract

The present application relates to the field of thermostats and discloses a safe temperature control method and thermostat for a heater. The method comprises: obtaining a heating current value and a heating temperature value detected by a thermostat, determining a heating current average value and a heating temperature average value within a plurality of detection time periods of the same length, and determining a ratio of the heating current average value to the heating temperature average value within each detection time period as a temperature control index; wherein the heating temperature value is a heating temperature value when the heater heats a heated object; determining a ratio of temperature control indexes within sequentially adjacent detection time periods as a temperature control index change value, and when at least one temperature control index change value is greater than or equal to a preset temperature control index change value, issuing a prompt message for repairing the thermostat; and when all temperature control index change values ​​are less than the preset temperature control index change value, continuing to control the heating process of the heater through the thermostat. The present application can improve the problem of poor contact of the thermostat and enhance the use effect of the thermostat.

Description

Technical Field

[0001] The present application relates to the technical field of thermostats, and more particularly to a safe temperature control method and a thermostat for a heater. Background Art

[0002] In water heaters, thermostats monitor and control water temperature, ensuring safe and comfortable hot water for users. Water heater thermostats often incorporate various safety features, such as dry-boil protection, overheat protection, and leakage protection, to ensure safe operation. They play a vital role in ensuring optimal water temperature, improving energy efficiency, and enhancing user safety.

[0003] Poor contact within the thermostat is a common problem and can lead to thermostat control failure. When the contacts fail to close or open properly, the thermostat may not properly start or stop the heating element, resulting in uncontrolled water temperature. A faulty thermostat not only wastes energy but can also cause the water temperature to be too high, increasing the risk of burns, or too low, impacting the user experience. Furthermore, poor contact can cause the thermostat housing to heat up during use. This can cause arcing during the opening and closing process, further affecting the thermostat's operation. Overheating of the thermostat contacts can also pose safety risks such as fire. If the thermostat maintains poor contact, the heat generated can accumulate and ignite surrounding insulation or other combustible materials, resulting in more serious consequences. Summary of the Invention

[0004] The purpose of this application is to provide a safe temperature control method and thermostat for a heater, which solves the technical problem that the poor contact problem of the thermostat affects the use effect of the thermostat, and achieves the technical effect of improving the poor contact problem of the thermostat and improving the use effect of the thermostat.

[0005] An embodiment of the present application provides a safe temperature control method for a heater, the method comprising: obtaining a heating current value and a heating temperature value detected by a thermostat, and determining a heating current average value and a heating temperature average value in a plurality of detection time periods of equal length, and determining a ratio of the heating current average value to the heating temperature average value in each detection time period as a temperature control index; wherein the heating temperature value is a heating temperature value when the heater heats a heated object; determining a ratio of temperature control indices in adjacent detection time periods in time sequence as a temperature control index change value, and issuing a prompt message for inspecting the thermostat when at least one temperature control index change value is greater than or equal to a preset temperature control index change value; and continuing to control the heating process of the heater through the thermostat when all temperature control index change values ​​are less than the preset temperature control index change value.

[0006] In one possible implementation, the method also includes: determining the ratio of adjacent temperature control index change values ​​in time sequence as the temperature control index fluctuation value, and when at least one temperature control index fluctuation value is greater than or equal to the temperature control index fluctuation value, issuing a prompt message to inspect the temperature controller; when all temperature control index fluctuation values ​​are less than the preset temperature control index fluctuation value, continuing to control the heating process of the heater through the temperature controller.

[0007] In another possible implementation, the method also includes: obtaining the heat collection temperature value between the contacts of the thermostat within a preset time period from the time the thermostat is powered on, and when the heat collection temperature value is greater than the preset heat collection temperature value, issuing a prompt message to inspect the contacts of the thermostat; when the heat collection temperature value is less than the preset heat collection temperature value, continuing to control the heating process of the heater through the thermostat.

[0008] In another possible implementation, the method further includes: when the temperature control index change value corresponding to the first detection time period and the second detection time period is greater than or equal to the preset temperature control index change value, obtaining a first heat collection temperature fluctuation value of the heat collection temperature value between the contacts of the thermostat within the first detection time period and the second detection time period; when the first heat collection temperature fluctuation value is greater than or equal to the preset heat collection temperature fluctuation value, issuing a prompt message to inspect the contacts of the thermostat.

[0009] In another possible implementation, the method further includes: when the temperature control index fluctuation value corresponding to the first detection time period and the second detection time period is greater than or equal to the preset temperature control index fluctuation value, obtaining a second heat collection temperature fluctuation value of the heat collection temperature value between the contacts of the thermostat within the first detection time period and the second detection time period; when the second heat collection temperature fluctuation value is greater than or equal to the preset heat collection temperature fluctuation value, issuing a prompt message to inspect the contacts of the thermostat.

[0010] In another possible implementation, the method also includes: when the temperature control index fluctuation value corresponding to the first detection time period and the second detection time period is greater than or equal to the preset temperature control index fluctuation value, and when the second heat collection temperature fluctuation value is greater than or equal to the preset heat collection temperature fluctuation value, the thermostat controls the heater to stop heating the first time period, and controls the heater again through the thermostat to start heating the second time period, and obtains the third heat collection temperature fluctuation value of the heat collection temperature value between the contacts of the thermostat in the second time period; when the third heat collection temperature fluctuation value is greater than or equal to the preset heat collection temperature fluctuation value, a prompt message is issued to inspect the contacts of the thermostat.

[0011] An embodiment of the present application also provides a temperature controller, which includes: a current detection component for obtaining the heating current value detected by the thermostat, and for determining the average heating current value within multiple detection time periods of the same length; a temperature detection component for obtaining the heating temperature value detected by the thermostat, and for determining the average heating temperature value within multiple detection time periods of the same length; a temperature control state detection component for determining the ratio of the heating current average value and the heating temperature average value within each detection time period as a temperature control index, and for determining the ratio of the temperature control index within the detection time periods adjacent in time sequence as a temperature control index change value. When at least one temperature control index change value is greater than or equal to a preset temperature control index change value, a prompt message for inspecting the thermostat is issued; when all temperature control index change values ​​are less than the preset temperature control index change value, the heating process of the heater continues to be controlled by the thermostat.

[0012] In another possible implementation, the temperature control status detection component is also used to determine the ratio of adjacent temperature control index change values ​​in time sequence as the temperature control index fluctuation value. When at least one temperature control index fluctuation value is greater than or equal to the temperature control index fluctuation value, a prompt message for inspecting the temperature controller is issued; when all temperature control index fluctuation values ​​are less than the preset temperature control index fluctuation value, the heating process of the heater continues to be controlled by the thermostat.

[0013] In another possible implementation, it also includes: a contact heat collection detection component, which is used to obtain the heat collection temperature value between the contacts of the thermostat within a preset time period when the thermostat is powered on; the temperature control state detection component is also used to issue a prompt message to inspect the contacts of the thermostat when the heat collection temperature value is greater than the preset heat collection temperature value; when the heat collection temperature value is less than the preset heat collection temperature value, continue to control the heating process of the heater through the thermostat.

[0014] In another possible implementation, the temperature control status detection component is also used to obtain a first heat collection temperature fluctuation value of the heat collection temperature value between the contacts of the thermostat within the first detection time period when the temperature control index change value within the first detection time period is greater than or equal to the preset temperature control index change value; when the first heat collection temperature fluctuation value is greater than or equal to the preset heat collection temperature fluctuation value, a prompt message is issued to inspect the contacts of the thermostat.

[0015] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0016] The present invention provides a safe temperature control method for a heater, comprising: obtaining a heating current value and a rising temperature value detected by a thermostat, determining an average value of the heating current and an average value of the rising temperature within a plurality of detection time periods of equal length, and determining a ratio of the average heating current to the average rising temperature within each detection time period as a temperature control index; wherein the rising temperature value is the rising temperature value when the heater heats a heated object; determining a ratio of the temperature control index within sequentially adjacent detection time periods as a temperature control index change value; when at least one temperature control index change value is greater than or equal to a preset temperature control index change value, issuing a prompt message to inspect the thermostat; and when all temperature control index change values ​​are less than the preset temperature control index change value, continuing to control the heating process of the heater through the thermostat. The safe temperature control method for a heater in the present invention can detect the heating current and the rising temperature value of the thermostat during use, and judge whether the working state of the thermostat is stable based on the heating current and the rising temperature value during heating, thereby improving the safety of the thermostat during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 A schematic flow chart of a first method for safe temperature control of a heater provided in an embodiment of the present application;

[0019] Figure 2 A schematic diagram of a workflow of a safe temperature control method for a heater provided in an embodiment of the present application;

[0020] Figure 3 A schematic flow chart of a second method for safe temperature control of a heater provided in an embodiment of the present application;

[0021] Figure 4 A schematic flow chart of a third method for safe temperature control of a heater provided in an embodiment of the present application;

[0022] Figure 5 A schematic flow chart of a fourth method for safe temperature control of a heater provided in an embodiment of the present application;

[0023] Figure 6 A schematic diagram of the structure of a thermostat provided in an embodiment of the present application;

[0024] Figure 7A schematic structural diagram of another temperature controller provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0026] It should be noted that when a component or structure is referred to as being “fixed to” or “disposed on” another component or structure, it may be directly on the other component or structure or indirectly on the other component or structure. When a component or structure is referred to as being “connected to” another component or structure, it may be directly connected to the other component or structure or indirectly connected to the other component or structure.

[0027] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or a component or structure referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0028] Furthermore, 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0029] When the contacts fail to close or open properly, the thermostat may not start or stop the heating element correctly, causing the water temperature in the water heater to go out of control. In addition, poor contact of the thermostat may cause the temperature of the thermostat housing to rise during use. Poor contact of the thermostat contacts may cause arcing during the opening and closing process, further affecting the working state of the thermostat.

[0030] Based on the above reasons, an embodiment of the present application provides a safe temperature control method for a heater, the method comprising: obtaining a heating current value and a heating temperature value detected by a thermostat, determining an average of the heating current and the heating temperature value within a plurality of detection time periods of equal length, and determining a ratio of the heating current average to the heating temperature average within each detection time period as a temperature control index; wherein the heating temperature value is the heating temperature value when the heater heats the object being heated; determining a ratio of the temperature control index within sequentially adjacent detection time periods as a temperature control index change value, and when at least one temperature control index change value is greater than or equal to a preset temperature control index change value, issuing a prompt message to inspect the thermostat; and when all temperature control index change values ​​are less than the preset temperature control index change value, continuing to control the heating process of the heater through the thermostat. The safe temperature control method for a heater in the embodiment of the present application can detect the heating current and the heating temperature value of the thermostat during use, and judge whether the working state of the thermostat is stable based on the heating current and the heating temperature value during the heating process, thereby improving the safety of the thermostat during operation.

[0031] In some scenarios, a safe temperature control method for a heater in an embodiment of the present application can be applied to a thermostat. The thermostat can determine whether the working state of the thermostat is stable based on the heating current and the rising temperature value during the heating process, thereby improving the safety of the thermostat during operation.

[0032] The following describes a safe temperature control method for a heater provided in an embodiment of the present application in detail with reference to specific examples.

[0033] Figure 1 This is a flow chart of the first safe temperature control method for a heater provided in an embodiment of the present application, as shown in FIG. Figure 1 As shown, the method includes S110 to S120, and S110 to S120 are described in detail below.

[0034] S110: Obtain the heating current value and the heating temperature value detected by the thermostat, determine the average heating current value and the average heating temperature value within a plurality of detection time periods of equal length, and determine the ratio of the average heating current value to the average heating temperature value within each detection time period as a temperature control indicator. The heating temperature value is the heating temperature value when the heater heats the object.

[0035] Figure 2 A schematic diagram of a work flow of a safe temperature control method for a heater provided in an embodiment of the present application is shown as follows: Figure 2As shown, when the method in the embodiment of the present application is working, the heating current value and the heating temperature value detected by the temperature controller can be obtained. The heating current value is the current used by the temperature controller to heat the heated object in the heater, and the heating temperature value is the heating temperature value when the heater heats the heated object. The working status of the thermostat can then be detected based on the heating current value and the heating temperature value.

[0036] For example, the heating object in the heater may be water.

[0037] For example, when detecting the heating current value, the heating current may be detected by a current sensor provided in the temperature controller.

[0038] After obtaining the heating current value and the heating temperature value, the heating current average and the heating temperature average within multiple detection time periods of the same length can be determined. The heating current average represents the current value of the thermostat controlling the heater for heating within the detection time period, and the heating temperature average represents the heating temperature value when controlling the heater for heating within the detection time period. The working status of the thermostat can then be detected by the heating current average and the heating temperature average.

[0039] When detecting the working status of the thermostat, the ratio of the average heating current and the average heating temperature in each detection time period can be determined as the temperature control index. The temperature control index represents the ratio of the heating current and the heating temperature of the thermostat, and then the working status of the thermostat can be detected according to the temperature control index.

[0040] Exemplarily, the duration of the detection time period may be 5 minutes, 10 minutes, or 15 minutes, and multiple detection time periods may be arranged adjacent to each other in time sequence.

[0041] For example, Figure 2 As shown, the detection time period may include multiple detection time periods such as from t1 to t2, t2 to t3, and t3 to t4.

[0042] S120: Determine a ratio of temperature control indices within sequentially adjacent detection time periods as a temperature control index change value. When at least one temperature control index change value is greater than or equal to a preset temperature control index change value, issue a prompt message to inspect the thermostat. When all temperature control index change values ​​are less than the preset temperature control index change value, continue to control the heating process of the heater through the thermostat.

[0043] When performing temperature control of the thermostat, the ratio of the temperature control indicators in adjacent detection time periods can be determined as the temperature control indicator change value, and the working state of the thermostat can be detected according to the temperature control indicator change value.

[0044] In actual use, the volume of the heated object in the heater may change over time. In the embodiment of the present application, by determining the ratio of the temperature control indicators in the adjacent detection time periods in time sequence as the temperature control indicator change value, the fluctuation of the heating current and the heating temperature caused by the change in the volume of the heated object in the heater can be avoided, thereby improving the detection stability of the working state of the temperature controller through the heating current and the heating temperature.

[0045] When detecting the working status of the thermostat, when at least one temperature control index change value is greater than or equal to a preset temperature control index change value, it indicates that the ratio of the temperature control index of the thermostat in at least two adjacent detection time periods in time sequence has fluctuated significantly, and a prompt message for repairing the thermostat can be issued to prompt the thermostat to be repaired.

[0046] When detecting the working status of the thermostat, when the change values ​​of all temperature control indicators are less than the preset temperature control indicator change values, it means that there is no significant fluctuation in the temperature control indicators in all adjacent detection time periods in time sequence, and the heating process of the heater can continue to be controlled by the thermostat.

[0047] The beneficial effect of the above implementation method is that it can detect the heating current of the thermostat during use and the rising temperature value of the heating process, and judge whether the working state of the thermostat is stable based on the heating current and the rising temperature value of the heating process, thereby improving the safety of the thermostat during operation.

[0048] The beneficial effect of the above-mentioned implementation method is also to determine the average heating current and the average heating temperature in multiple detection time periods of the same length, and to determine the ratio of the average heating current and the average heating temperature in each detection time period as the temperature control index, and further determine the ratio of the temperature control index in the detection time periods adjacent in time sequence as the temperature control index change value, thereby realizing accurate detection of the working status of the temperature controller.

[0049] The beneficial effect of the above-mentioned implementation method is that by determining the ratio of the temperature control indicators in the adjacent detection time periods in time sequence as the temperature control index change value, the fluctuation of only the heating current and the heating temperature caused by the different volumes of the heated objects in the heater can be avoided. The working status of the thermostat is detected by the temperature control index change value, thereby improving the accuracy of the detection of the working status of the thermostat.

[0050] In some implementations, the method further includes determining a ratio of adjacent temperature control index change values ​​in a time series as a temperature control index fluctuation value, and issuing a prompt message to inspect the thermostat when at least one temperature control index fluctuation value is greater than or equal to the temperature control index fluctuation value. When all temperature control index fluctuation values ​​are less than a preset temperature control index fluctuation value, continuing to control the heating process of the heater through the thermostat.

[0051] like Figure 2 As shown, when detecting the working status of the thermostat, the ratio of the temperature control index change values ​​adjacent in time sequence can be further determined as the temperature control index fluctuation value. The temperature control index fluctuation value represents the change value of the temperature control index change values ​​adjacent in time sequence, and then the working status of the thermostat can be detected according to the temperature control index fluctuation value.

[0052] During the test, when at least one temperature control index fluctuation value is greater than or equal to the temperature control index fluctuation value, it means that the temperature control index change values ​​in at least two adjacent test time periods have fluctuated greatly, which means that the working state of the thermostat is unstable, and a prompt message for repairing the thermostat can be issued.

[0053] During the test, when all temperature control index fluctuation values ​​are less than the preset temperature control index fluctuation value, it means that there is no large fluctuation in the temperature control index change value in all adjacent test time periods, which means that the working state of the thermostat is relatively stable, and the heating process of the heater can continue to be controlled by the thermostat.

[0054] The beneficial effect of the above implementation method is that by determining the ratio of adjacent temperature control index change values ​​in time sequence as the temperature control index fluctuation value, and detecting the working status of the thermostat based on the temperature control index fluctuation value, accurate detection of the working status of the thermostat is achieved.

[0055] In some implementations, the method further includes obtaining a heat collection temperature value between contacts of the thermostat within a preset time period from when the thermostat is powered on, and when the heat collection temperature value is greater than the preset heat collection temperature value, issuing a prompt message to inspect the contacts of the thermostat. When the heat collection temperature value is less than the preset heat collection temperature value, continuing to control the heating process of the heater through the thermostat.

[0056] When detecting the working state of the thermostat, the heat collection temperature value between the contacts of the thermostat within a preset time period from the time the thermostat is powered on can be obtained, and then the contact state of the thermostat contacts can be determined based on the heat collection temperature value.

[0057] For example, the heat collection temperature value between the contacts of the thermostat within the preset time period may be the heat collection temperature value between the two contacts of the thermostat within the preset time period.

[0058] For example, the heat collection temperature value between the contacts of the thermostat within the preset time period may be a temperature rise value between the contacts of the thermostat within the preset time period from the start of power-on of the thermostat.

[0059] For example, the temperature rise value between the contacts of the thermostat may be detected by a temperature sensor provided between the contacts of the thermostat.

[0060] After obtaining the heat collection temperature value, when the heat collection temperature value is greater than the preset heat collection temperature value, it means that the temperature rise value between the contacts of the thermostat is large. The temperature rise may be large due to poor contact between the contacts of the thermostat, and a prompt message can be issued to inspect the contacts of the thermostat.

[0061] After obtaining the heat collection temperature value, when the heat collection temperature value is less than the preset heat collection temperature value, it means that the temperature rise value between the contacts of the thermostat is small, which means that the contact effect between the contacts of the thermostat is better, and the heating process of the heater can continue to be controlled by the thermostat.

[0062] The beneficial effect of the above-mentioned implementation method is that the heat collection temperature value between the contacts of the thermostat within a preset time period when the thermostat is powered on is obtained, and then the contact state of the contacts of the thermostat can be determined according to the heat collection temperature value. When the temperature rise value between the contacts of the thermostat is large, indicating that the temperature rise may be large due to poor contact between the contacts of the thermostat, a prompt message for inspecting the contacts of the thermostat can be issued.

[0063] The beneficial effect of the above implementation is that when the temperature rise value between the contacts of the thermostat is small, it means that the contact effect between the contacts of the thermostat is good, and the heating process of the heater can continue to be controlled by the thermostat.

[0064] Figure 3 A flow chart of a second method for safe temperature control of a heater provided in an embodiment of the present application is shown as follows: Figure 3 As shown, the above method further includes S210 to S220, and S210 to S220 are described in detail below.

[0065] S210. When the temperature control index change values ​​corresponding to the first detection time period and the second detection time period are greater than or equal to the preset temperature control index change value, obtain a first heat collection temperature fluctuation value of the heat collection temperature value between the contacts of the thermostat within the first detection time period and the second detection time period.

[0066] When detecting the working status of the thermostat, when the temperature control index change value corresponding to the first detection time period and the second detection time period is greater than or equal to the preset temperature control index change value, it means that the temperature control index change value from the first detection time period to the second detection time period has a large change amplitude, and then the first heat collection temperature fluctuation value of the heat collection temperature value between the contacts of the thermostat in the first detection time period and the second detection time period can be obtained, and the working status of the thermostat is detected based on the first heat collection temperature fluctuation value combined with the temperature control index change value.

[0067] For example, the first heat collection temperature fluctuation value may be a difference between a maximum temperature value and a minimum temperature value of the heat collection temperature values ​​between the contacts of the thermostat within the first detection time period and the second detection time period.

[0068] S220: When the first heat collection temperature fluctuation value is greater than or equal to the preset heat collection temperature fluctuation value, a prompt message is issued to inspect the contacts of the thermostat.

[0069] When detecting the working status of the thermostat, when the first heat collection temperature fluctuation value is greater than or equal to the preset heat collection temperature fluctuation value, it means that the temperature control index change value of the thermostat is large, and the first heat collection temperature fluctuation value between the contacts of the thermostat is also large, indicating that the thermostat may have serious heat collection between the contacts due to poor contact, and the fluctuation value of the ratio of the heating current average and the heating temperature average may be large due to the poor connection status of the contacts of the thermostat, and a prompt message for repairing the thermostat can be issued to prompt the thermostat to be repaired.

[0070] The beneficial effect of the above implementation is that the working state of the thermostat can be detected in combination with the first heat collection temperature fluctuation value and the temperature control index change value, thereby improving the accuracy of the working state detection of the thermostat and avoiding false detection.

[0071] Figure 4 A schematic flow chart of a third method for safe temperature control of a heater provided in an embodiment of the present application is shown in FIG. Figure 4 As shown, the above method further includes S310 to S320, and S310 to S320 are described in detail below.

[0072] S310. When the temperature control index fluctuation values ​​corresponding to the first detection time period and the second detection time period are greater than or equal to the preset temperature control index fluctuation value, obtain a second heat collection temperature fluctuation value of the heat collection temperature value between the contacts of the thermostat within the first detection time period and the second detection time period.

[0073] During the detection, when the temperature control index fluctuation value corresponding to the first detection time period and the second detection time period is greater than or equal to the preset temperature control index fluctuation value, it means that the temperature control index fluctuation value corresponding to the first detection time period and the second detection time period exceeds the preset amplitude, and then the second heat collection temperature fluctuation value of the heat collection temperature value between the contacts of the thermostat in the first detection time period and the second detection time period can be obtained, and the working status of the thermostat contacts can be detected according to the second heat collection temperature fluctuation value.

[0074] For example, the second heat collection temperature fluctuation value may be a difference between a maximum temperature value and a minimum temperature value of the heat collection temperature values ​​between the contacts of the thermostat in the first detection time period and the second detection time period.

[0075] S320: When the second heat collection temperature fluctuation value is greater than or equal to the preset heat collection temperature fluctuation value, a prompt message is issued to inspect the contacts of the thermostat.

[0076] After obtaining the second heat collection temperature fluctuation value, when the second heat collection temperature fluctuation value is greater than or equal to the preset heat collection temperature fluctuation value, it means that the temperature control index fluctuation value corresponding to the first detection time period and the second detection time period exceeds the preset amplitude, and the fluctuation amplitude of the heat collection temperature value between the contacts of the thermostat in the first detection time period and the second detection time period is also large, indicating that the thermostat may have poor contact with the contacts, resulting in a large fluctuation value of the ratio of the heating current average and the heating temperature average, and serious heat collection between the contacts, and then a prompt message for inspecting the contacts of the thermostat can be issued.

[0077] The beneficial effect of the above-mentioned implementation method is that by determining whether the temperature control index fluctuation value corresponding to the first detection time period and the second detection time period exceeds the preset amplitude, and determining whether the fluctuation amplitude of the heat collection temperature value between the contacts of the thermostat in the first detection time period and the second detection time period exceeds the preset amplitude, accurate detection of the working status of the thermostat is achieved, thereby improving the accuracy of the working status detection of the thermostat.

[0078] Figure 5 A schematic flow chart of a fourth method for safe temperature control of a heater provided in an embodiment of the present application is shown in FIG. Figure 5 As shown, the above method further includes S410 to S420, and S410 to S420 are described in detail below.

[0079] S410. When the temperature control index fluctuation value within the first detection time period and the second detection time period is greater than or equal to the preset temperature control index fluctuation value, and when the second heat collection temperature fluctuation value is greater than or equal to the preset heat collection temperature fluctuation value, the thermostat controls the heater to stop heating for the first time period, and controls the heater again through the thermostat to start heating for the second time period, and obtains the third heat collection temperature fluctuation value of the heat collection temperature value between the contacts of the thermostat in the second time period.

[0080] When detecting the working status of the thermostat, when the temperature control index fluctuation value within the first detection time period and the second detection time period is greater than or equal to the preset temperature control index fluctuation value, and when the second heat collection temperature fluctuation value is greater than or equal to the preset heat collection temperature fluctuation value, it indicates that the contacts of the thermostat are in poor working condition due to poor contact, and the heating process can be controlled by intermittently restarting the thermostat to try to repair the working status of the thermostat.

[0081] When trying to repair the working state of the thermostat, the thermostat can be used to control the heater to stop heating for the first time period, and again to control the heater to start heating for the second time period, and obtain the third heat collection temperature fluctuation value of the heat collection temperature value between the contacts of the thermostat in the second time period, and then the working state of the thermostat can be judged again based on the fluctuation value of the heat collection temperature value between the contacts of the thermostat.

[0082] For example, the first time period and the second time period may be 1 minute, 2 minutes or 3 minutes respectively.

[0083] S420: When the third heat collection temperature fluctuation value is greater than or equal to the preset heat collection temperature fluctuation value, a prompt message is issued to inspect the contacts of the thermostat.

[0084] When the working status of the thermostat is detected after the thermostat is restarted, when the third heat collection temperature fluctuation value is greater than or equal to the preset heat collection temperature fluctuation value, it means that the thermostat may still be in poor working condition due to poor contact of the contacts, and a prompt message for inspecting the contacts of the thermostat can be issued.

[0085] The beneficial effect of the above implementation method is that the working condition of the thermostat is poor due to poor contact of the contacts of the thermostat, and then the heating process can be controlled by intermittently restarting the thermostat to try to repair the working condition of the thermostat, so as to improve the working condition of the thermostat and avoid excessive heat between the contacts of the thermostat causing damage to the thermostat.

[0086] Figure 6 A schematic diagram of the structure of a temperature controller provided in an embodiment of the present application is shown in FIG. Figure 6 As shown, the embodiment of the present application further provides a thermostat 1, comprising a current detection component 11, a temperature detection component 12 and a temperature control state detection component 13. The current detection component 11, the temperature detection component 12 and the temperature control state detection component 13 cooperate with each other to realize the function of the thermostat.

[0087] When the thermostat is working, the current detection component 11 is used to obtain the heating current value detected by the thermostat, and to determine the average value of the heating current in multiple detection time periods of the same length. The temperature detection component 12 is used to obtain the heating temperature value detected by the thermostat, and to determine the average value of the heating temperature in multiple detection time periods of the same length. The temperature control state detection component 13 is used to determine the ratio of the heating current average value and the heating temperature average value in each detection time period as the temperature control index, and to determine the ratio of the temperature control index in the detection time periods adjacent in time as the temperature control index change value. When at least one temperature control index change value is greater than or equal to the preset temperature control index change value, a prompt message for repairing the thermostat is issued. When all temperature control index change values ​​are less than the preset temperature control index change value, the heating process of the heater continues to be controlled by the thermostat.

[0088] The beneficial effect of the above implementation method is that it can detect the heating current of the thermostat during use and the rising temperature value of the heating process, and judge whether the working state of the thermostat is stable based on the heating current and the rising temperature value of the heating process, thereby improving the safety of the thermostat during operation.

[0089] The beneficial effect of the above-mentioned implementation method is also to determine the average heating current and the average heating temperature in multiple detection time periods of the same length, and to determine the ratio of the average heating current and the average heating temperature in each detection time period as the temperature control index, and further determine the ratio of the temperature control index in the detection time periods adjacent in time sequence as the temperature control index change value, thereby realizing accurate detection of the working status of the temperature controller.

[0090] In some implementations, the temperature control status detection component is further configured to determine a ratio of adjacent temperature control index change values ​​in a time series as a temperature control index fluctuation value. When at least one temperature control index fluctuation value is greater than or equal to the temperature control index fluctuation value, a prompt message is issued to inspect the thermostat. When all temperature control index fluctuation values ​​are less than a preset temperature control index fluctuation value, the thermostat continues to control the heating process of the heater.

[0091] When the thermostat in the embodiment of the present application is operating, the temperature control state detection component 13 is further configured to determine the ratio of adjacent temperature control index change values ​​in a time sequence as a temperature control index fluctuation value. When at least one temperature control index fluctuation value is greater than or equal to the temperature control index fluctuation value, a prompt message is issued to inspect the thermostat. When all temperature control index fluctuation values ​​are less than the preset temperature control index fluctuation value, the thermostat continues to control the heating process of the heater.

[0092] The beneficial effect of the above implementation method is that by determining the ratio of adjacent temperature control index change values ​​in time sequence as the temperature control index fluctuation value, and detecting the working status of the thermostat based on the temperature control index fluctuation value, accurate detection of the working status of the thermostat is achieved.

[0093] Figure 7 A schematic diagram of the structure of another thermostat provided in an embodiment of the present application is shown in FIG. Figure 7 As shown, the thermostat in this embodiment of the present application also includes a contact heat collection detection component 14. Contact heat collection detection component 14 is used to obtain the heat collection temperature value between the thermostat contacts within a preset time period from the time the thermostat is powered on. Temperature control status detection component 14 is also used to issue a prompt message to inspect the thermostat contacts when the heat collection temperature value exceeds the preset heat collection temperature value. When the heat collection temperature value is less than the preset heat collection temperature value, the thermostat continues to control the heating process of the heater.

[0094] During operation of the thermostat in the embodiment of the present application, the contact heat collection detection assembly 14 is configured to detect the heat collection temperature between the thermostat contacts within a preset time period from the moment the thermostat is powered on. The temperature control status detection assembly 14 is also configured to issue a prompt to inspect the thermostat contacts if the heat collection temperature exceeds the preset heat collection temperature. If the heat collection temperature is below the preset heat collection temperature, the thermostat continues to control the heater's heating process.

[0095] Exemplarily, the contact heat collection detection component 14 can be arranged between the contacts of the thermostat. The contact heat collection detection component 14 includes a heat conductive block and a temperature sensor for heat conduction. The heat conductive block can transfer heat between the contacts of the thermostat and collect the temperature change of the heat conductive block through the temperature sensor, so that the contact heat collection detection component 14 can collect the heat collection temperature between the contacts of the thermostat.

[0096] The beneficial effect of the above-mentioned implementation method is that the heat collection temperature value between the contacts of the thermostat within a preset time period when the thermostat is powered on is obtained, and then the contact state of the contacts of the thermostat can be determined according to the heat collection temperature value. When the temperature rise value between the contacts of the thermostat is large, indicating that the temperature rise may be large due to poor contact between the contacts of the thermostat, a prompt message for inspecting the contacts of the thermostat can be issued.

[0097] In some implementations, the temperature control status detection component is further configured to obtain a first heat collection temperature fluctuation value of the heat collection temperature between contacts of the thermostat within the first detection time period when a temperature control index change value within the first detection time period is greater than or equal to a preset temperature control index change value. When the first heat collection temperature fluctuation value is greater than or equal to the preset heat collection temperature fluctuation value, a prompt message is issued to inspect the contacts of the thermostat.

[0098] The temperature control state detection component is further configured to obtain a first heat collection temperature fluctuation value of the heat collection temperature between contacts of the thermostat within the first detection time period when a temperature control index change value within the first detection time period is greater than or equal to a preset temperature control index change value. When the first heat collection temperature fluctuation value is greater than or equal to the preset heat collection temperature fluctuation value, a prompt message is issued to inspect the contacts of the thermostat.

[0099] The beneficial effect of the above implementation is that the working state of the thermostat can be detected in combination with the first heat collection temperature fluctuation value and the temperature control index change value, thereby improving the accuracy of the working state detection of the thermostat and avoiding false detection.

[0100] It should be noted that the thermostat in the embodiment of the present application can also execute other steps in the above method to further improve the stability of the working state of the thermostat.

[0101] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A safe temperature control method for a heater, characterized in that: The method comprises: Obtaining the heating current value and the heating temperature value detected by the thermostat, and determining the average heating current and the average heating temperature in multiple detection time periods of equal length, and determining the ratio of the average heating current to the average heating temperature in each detection time period as a temperature control indicator; wherein the heating temperature value is the heating temperature value when the heater heats the heating object; The ratio of the temperature control indicators in the adjacent detection time periods in time sequence is determined as the temperature control indicator change value. When at least one temperature control indicator change value is greater than or equal to the preset temperature control indicator change value, a prompt message for repairing the thermostat is issued; when all temperature control indicator change values ​​are less than the preset temperature control indicator change value, the heating process of the heater continues to be controlled by the thermostat.

2. The method according to claim 1, wherein The method further comprises: The ratio of the temperature control index change values ​​that are adjacent in time sequence is determined as the temperature control index fluctuation value. When at least one temperature control index fluctuation value is greater than or equal to the preset temperature control index fluctuation value, a prompt message for inspecting the thermostat is issued; when all temperature control index fluctuation values ​​are less than the preset temperature control index fluctuation value, the heating process of the heater continues to be controlled by the thermostat.

3. The method according to claim 2, wherein The method further comprises: Obtain the heat collection temperature value between the contacts of the thermostat within the preset time period from the time the thermostat is powered on. When the heat collection temperature value is greater than the preset heat collection temperature value, a prompt message is issued to inspect the contacts of the thermostat; when the heat collection temperature value is less than the preset heat collection temperature value, continue to control the heating process of the heater through the thermostat.

4. The method according to claim 3, wherein The method further comprises: When the temperature control index change value corresponding to the first detection time period and the second detection time period is greater than or equal to the preset temperature control index change value, obtaining a first heat collection temperature fluctuation value of the heat collection temperature value between the contacts of the thermostat within the first detection time period and the second detection time period; When the first heat collection temperature fluctuation value is greater than or equal to the preset heat collection temperature fluctuation value, a prompt message is issued to inspect the contacts of the thermostat.

5. The method according to claim 4, wherein The method further comprises: When the temperature control index fluctuation value corresponding to the first detection time period and the second detection time period is greater than or equal to the preset temperature control index fluctuation value, obtaining a second heat collection temperature fluctuation value of the heat collection temperature value between the contacts of the thermostat within the first detection time period and the second detection time period; When the second heat collection temperature fluctuation value is greater than or equal to the preset heat collection temperature fluctuation value, a prompt message is issued to inspect the contacts of the thermostat.

6. The method according to claim 5, wherein The method further comprises: When the temperature control index fluctuation values ​​corresponding to the first detection time period and the second detection time period are greater than or equal to the preset temperature control index fluctuation value, and when the second heat collection temperature fluctuation value is greater than or equal to the preset heat collection temperature fluctuation value, the thermostat controls the heater to stop heating for the first time period, and controls the heater again through the thermostat to start heating for the second time period, and obtains a third heat collection temperature fluctuation value of the heat collection temperature value between the contacts of the thermostat in the second time period; When the third heat collection temperature fluctuation value is greater than or equal to the preset heat collection temperature fluctuation value, a prompt message is issued to inspect the contacts of the thermostat.

7. A thermostat, characterized in that: include: A current detection component is used to obtain the heating current value detected by the thermostat and to determine the average value of the heating current in multiple detection time periods of equal length; A temperature detection component is used to obtain the temperature rise value detected by the thermostat and to determine the average temperature rise value within multiple detection time periods of equal length; The temperature control status detection component is used to determine the ratio of the average heating current and the average heating temperature in each detection time period as the temperature control index, and to determine the ratio of the temperature control index in the detection time periods adjacent in time sequence as the temperature control index change value. When at least one temperature control index change value is greater than or equal to the preset temperature control index change value, a prompt message for inspecting the thermostat is issued; when all temperature control index change values ​​are less than the preset temperature control index change value, the heating process of the heater continues to be controlled by the thermostat.

8. The thermostat according to claim 7, wherein: The temperature control status detection component is also used to determine the ratio of adjacent temperature control index change values ​​in time sequence as the temperature control index fluctuation value. When at least one temperature control index fluctuation value is greater than or equal to the preset temperature control index fluctuation value, a prompt message for inspecting the thermostat is issued; when all temperature control index fluctuation values ​​are less than the preset temperature control index fluctuation value, the heating process of the heater continues to be controlled by the thermostat.

9. The thermostat according to claim 8, wherein: Also includes: Contact heat collection detection component, used to obtain the heat collection temperature value between the contacts of the thermostat within a preset time period from the time the thermostat is powered on; The temperature control status detection component is also used to issue a prompt message to inspect the contacts of the thermostat when the heat collection temperature value is greater than the preset heat collection temperature value; when the heat collection temperature value is less than the preset heat collection temperature value, continue to control the heating process of the heater through the thermostat.

10. The thermostat according to claim 9, wherein: The temperature control status detection component is also used to obtain a first heat collection temperature fluctuation value of the heat collection temperature value between the contacts of the thermostat within the first detection time period when the temperature control index change value within the first detection time period is greater than or equal to the preset temperature control index change value; when the first heat collection temperature fluctuation value is greater than or equal to the preset heat collection temperature fluctuation value, a prompt message is issued to inspect the contacts of the thermostat.

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