CN219718493U

CN219718493U - Heating control mechanism and heating device

Info

Publication number: CN219718493U
Application number: CN202320713117.9U
Authority: CN
Inventors: 张孙光; 陈权标; 李瑶; 郑绍海; 万景峰
Original assignee: Guangdong Yilaite Electronic Technology Co ltd; Guangdong Enaiter Electrical Appliances Co Ltd
Current assignee: Guangdong Yilaite Electronic Technology Co ltd; Guangdong Enaiter Electrical Appliances Co Ltd
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2023-09-19
Anticipated expiration: 2033-03-31

Abstract

The embodiment of the utility model provides a heating control mechanism and a heating device, and relates to the technical field of electric heaters. The heating control mechanism comprises a thermosensitive temperature sensor assembly, an IC chip, a power supply conversion circuit and a relay circuit; the thermosensitive temperature sensor assembly comprises at least one thermosensitive temperature sensor, the thermosensitive temperature sensor is connected with the IC chip, and the thermosensitive temperature sensor is in fit contact with a preset heating body; the access end of the power supply conversion circuit is connected with an alternating current power supply, and the output end of the power supply conversion circuit is connected with an IC chip; the relay circuit is respectively connected with the power supply conversion circuit, the IC chip and the alternating current power supply. The heating control mechanism can achieve the technical effect of improving the sensing sensitivity of temperature control.

Description

Heating control mechanism and heating device

Technical Field

The utility model relates to the technical field of electric heaters, in particular to a heating control mechanism and a heating device.

Background

At present, the electric heating product of food is a cooker capable of converting electric energy into heat energy, has various operation functions of steaming, boiling, stewing and the like on the food, and is convenient to use, safe and reliable; the electric heating product not only can cook food, but also can preserve heat, is clean and sanitary to use, has no pollution, saves time and labor, and is one of the indispensable tools for modernization of household labor.

In the prior art, the heating products on the market at present have single functions, have no more requirements on eating methods of foods, have multiple functions and complex operation, and are difficult to use by users; generally, the conventional heating products have no function of monitoring the water temperature in the pot, cannot achieve better food cooking effect, and have destructive effect on the taste of food; in addition, the common heating products have the defects of long period from disconnection to recovery of heating, insensitive temperature control induction and the like.

Disclosure of Invention

The embodiment of the utility model aims to provide a heating control mechanism, a heating device and a heating control method, which can realize the technical effect of improving the induction sensitivity of temperature control.

In a first aspect, an embodiment of the present utility model provides a heating control mechanism including a thermosensitive temperature sensor assembly, an IC chip, a power conversion circuit, and a relay circuit;

the thermosensitive temperature sensor assembly comprises at least one thermosensitive temperature sensor, the thermosensitive temperature sensor is connected with the IC chip, and the thermosensitive temperature sensor is in fit contact with a preset heating body;

the access end of the power supply conversion circuit is connected with an alternating current power supply, and the output end of the power supply conversion circuit is connected with an IC chip;

the relay circuit is respectively connected with the power supply conversion circuit, the IC chip and the alternating current power supply.

In the implementation process, the heating control mechanism is characterized in that a plurality of thermosensitive temperature sensors are implanted in the contact surface of the preset heating body, the thermosensitive temperature sensors are used for collecting temperature signals of the preset heating body and transmitting the temperature signals to the IC chip, the IC chip judges through the temperature signals, a corresponding working mode is selected according to a temperature-time curve relation, and the IC chip controls the on-off of the relay circuit, so that the processing of foods can be completed without manual selection; the heating control mechanism realizes accurate temperature control through the thermosensitive temperature sensor and the IC chip, and can realize the technical effect of improving the sensing sensitivity of the temperature control.

Further, the relay circuit comprises a relay and a triode;

the first end of the relay is connected with the access end of the power conversion circuit, the second end of the relay is connected with the output end of the power conversion circuit, the third end of the relay is connected with the preset heating body, and the fourth end of the relay is connected with the collector electrode of the triode;

the emitter of the triode is grounded, and the base of the triode is connected with the IC chip.

Further, the relay circuit further comprises a diode, and the diode is respectively connected with the second end of the relay and the fourth end of the relay.

Further, the power supply conversion circuit comprises an alternating current-direct current conversion chip, and the alternating current power supply is converted into a direct current power supply with preset voltage through the alternating current-direct current conversion chip to supply power to the IC chip and the relay circuit.

Further, the heating control mechanism further comprises a display circuit, and the display circuit is connected with the IC chip.

Further, the heating control mechanism further comprises a switching circuit, and the plurality of thermosensitive temperature sensors are connected with the IC chip through the switching circuit.

Further, the thermosensitive temperature sensor is an NTC thermistor.

In a second aspect, an embodiment of the present utility model provides a heating device, including a heater and a heating control mechanism according to any one of the first aspects, where the heater is connected to the heating control mechanism.

In a third aspect, an embodiment of the present utility model provides a heating control method applied to the heating device in the second aspect, where the heating control method includes:

controlling the heater to operate at a preset power for a first time to obtain a first temperature-time curve;

controlling the heater to operate for a second time at a preset power to obtain a second temperature-time curve;

generating curve interval data according to the first temperature-time curve and the second temperature-time curve;

and matching a preset operation mode according to the curve interval data, and controlling the heating device to work in the preset operation mode.

In the implementation process, when the heating control method just starts to work, temperature data are fed back to the IC chip for a plurality of times through the thermosensitive temperature sensor, and the IC chip accurately judges the working mode required by a user according to the obtained first temperature-time curve and second temperature-time curve; therefore, through two sections of operation conditions (a first temperature-time curve and a second temperature-time curve) of the heater, the operation mode required by the heater can be judged more accurately, the sensing sensitivity of temperature control is improved, the processing treatment of food is completed without manual early selection, and the cooking automation is realized.

Further, the preset operation mode is a cooking mode, the step of matching the preset operation mode according to the curve interval data and controlling the heating device to work in the preset operation mode includes:

acquiring temperature information acquired by the thermosensitive temperature sensor, and controlling the heating device to heat in the following manner:

when the temperature information is greater than a first threshold value, the heating device stops heating; when the temperature information is smaller than a second threshold value, the heating device continuously heats; when the temperature information is larger than a third threshold value, the heating device generates alarm information and stops heating; the second threshold value, the first threshold value and the third threshold value are sequentially increased.

Further, the preset operation mode is a frying and baking mode, and the step of matching the preset operation mode according to the curve interval data to control the heating device to work in the preset operation mode includes:

the heating device is used for continuously heating, and when the temperature information is larger than a fourth threshold value, alarm information is generated; when the temperature information is greater than a fifth threshold, the heating device stops heating; when the temperature information is smaller than a sixth threshold value, the heating device continuously heats; wherein the fourth threshold, the sixth threshold, and the fifth threshold are sequentially increased.

Further, the preset operation mode is a cooking mode, the step of matching the preset operation mode according to the curve section data and controlling the heating device to work in the preset operation mode includes:

the heating device is used for continuously heating, and when the temperature information is larger than a seventh threshold value, alarm information is generated; when the temperature information is greater than an eighth threshold, the heating device stops heating; when the temperature information is smaller than a ninth threshold value, the heating device continuously heats; wherein the seventh threshold, the ninth threshold, and the eighth threshold are sequentially increased.

Additional features and advantages of the disclosure will be set forth in the description which follows, or in part will be obvious from the description, or may be learned by practice of the disclosure.

In order to make the above objects, features and advantages of the present utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments of the present utility model will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present utility model and should not be considered as limiting the scope, and other related drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1a is a block diagram of a heating control mechanism according to an embodiment of the present utility model;

fig. 1b is a schematic circuit diagram of a power conversion circuit and a relay circuit according to an embodiment of the present utility model;

FIG. 1c is a schematic circuit diagram of an IC chip according to an embodiment of the present utility model;

FIG. 1d is a schematic circuit diagram of a thermosensitive temperature sensor according to an embodiment of the present utility model;

FIG. 1e is a schematic diagram of a coding switch circuit according to an embodiment of the present utility model;

FIG. 2 is a schematic flow chart of a heating control method according to an embodiment of the present utility model;

fig. 3 is a temperature-time relationship diagram of a preset operation mode according to an embodiment of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.

In the present utility model, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present utility model and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.

Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present utility model will be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or a point connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish between different devices, elements, or components (the particular species and configurations may be the same or different), and are not used to indicate or imply the relative importance and number of devices, elements, or components indicated. Unless otherwise indicated, the meaning of "a plurality" is two or more.

The embodiment of the utility model provides a heating control mechanism, a heating device and a heating control method, which can be applied to heating control of an electric heater; the heating control mechanism is characterized in that a plurality of thermosensitive temperature sensors are implanted in the contact surface of a preset heating body, the thermosensitive temperature sensors are used for collecting temperature signals of the preset heating body, the temperature signals are transmitted to an IC chip, the IC chip is used for judging through the temperature signals, a corresponding working mode is selected according to a temperature-time curve relation, and the IC chip is used for controlling the on-off of a relay circuit, so that the processing of foods can be completed without manual selection; the heating control mechanism realizes accurate temperature control through the thermosensitive temperature sensor and the IC chip, and can realize the technical effect of improving the sensing sensitivity of the temperature control.

Referring to fig. 1a, fig. 1a is a block diagram of a heating control mechanism provided in an embodiment of the present utility model, fig. 1b is a circuit schematic diagram of a power conversion circuit and a relay circuit provided in an embodiment of the present utility model, fig. 1c is a circuit schematic diagram of an IC chip provided in an embodiment of the present utility model, fig. 1d is a circuit schematic diagram of a heat-sensitive temperature sensor provided in an embodiment of the present utility model, and fig. 1e is a circuit schematic diagram of a coding switch circuit provided in an embodiment of the present utility model; the heating control mechanism includes a thermosensitive temperature sensor assembly 100, an IC chip 200, a power conversion circuit 300, and a relay circuit 400.

Illustratively, the heat-sensitive temperature sensor assembly 100 includes at least one heat-sensitive temperature sensor connected to the IC chip 200 and in contact with a predetermined heating body.

Illustratively, the temperature sensor may be a thermistor; a thermistor is a sensor resistor whose resistance value changes with a change in temperature. A positive temperature coefficient thermistor (PTC thermistor, positive Temperature Coefficient thermistor) and a negative temperature coefficient thermistor (NTC thermistor, negative Temperature Coefficient thermistor) are classified according to temperature coefficients; wherein the resistance value of the positive temperature coefficient thermistor increases with the rise of temperature, and the resistance value of the negative temperature coefficient thermistor decreases with the rise of temperature, which belong to the semiconductor devices.

The IC chip 200 (Integrated Circuit Chip) is an integrated circuit formed by a plurality of microelectronic devices (transistors, resistors, capacitors, etc.) on a plastic substrate to form a chip. The IC chip 200 includes a wafer chip and a package chip, and the corresponding IC chip production line is composed of two parts of the wafer production line and the package production line.

In the embodiment of the utility model, the preset heating body can be a pot body for heating products; illustratively, a plurality of thermosensitive temperature sensors are implanted on the contact surface of the preset heating body, temperature signals are collected and transmitted to the IC chip 200, the IC chip 200 performs interval relation judgment through a temperature-time relation curve, and a corresponding working mode is selected, so that the processing of food can be completed without manual selection.

Illustratively, the power conversion circuit 300 has an access terminal connected to the ac power supply 500, and an output terminal of the power conversion circuit 300 connected to the IC chip 200.

As shown in fig. 1b, the ac power supply 500 includes a live wire (ACL) and a neutral wire (ACN), and the power conversion circuit 300 converts the ac power supply 500 into a dc power supply, such as a 5V dc power supply, through the ac-dc conversion chip IC 1.

Illustratively, the relay circuit 400, the IC chip 200 is powered by converting the alternating current into direct current of a preset voltage by the power conversion circuit 300.

The relay circuit 400 is illustratively connected to the power conversion circuit 300, the IC chip 200, and the ac power supply 500, respectively.

The relay circuit 400 is illustratively on-off controlled by the IC chip 200 to control the heating on-off of the preset heating body.

As shown in fig. 1c, the a-H ends of the IC chip 200 are used for connecting a nixie tube display circuit, and the nixie tube display circuit is used for displaying information such as real-time temperature, menus and the like.

Illustratively, the relay circuit 400 includes a relay REL1 and a transistor Q1; a first end of the relay REL1 is connected with an access end of the power supply conversion circuit 300, a second end of the relay REL1 is connected with an output end of the power supply conversion circuit 300, a third end of the relay REL1 is connected with a preset heating body (HEAT), and a fourth end of the relay REL1 is connected with a collector electrode of the triode Q1; the emitter of the transistor Q1 is grounded, and the base of the transistor Q1 is connected to the IC chip 200.

Illustratively, the relay circuit 400 further includes a diode D3, the diode D3 being connected to the second terminal of the relay REL1 and the fourth terminal of the relay REL1, respectively.

Illustratively, the power conversion circuit 300 includes an ac/dc conversion chip IC1, and converts the ac power supply 500 into a dc power supply with a predetermined voltage through the ac/dc conversion chip IC1 to supply power to the IC chip 200 and the relay circuit 400.

Illustratively, the heating control mechanism further includes a display circuit coupled to the IC chip 200.

Illustratively, the heating control mechanism further includes a switching circuit through which the plurality of thermally sensitive temperature sensors are coupled to the IC chip 200.

Illustratively, the temperature sensitive temperature sensor is an NTC thermistor.

As shown in fig. 1d and 1e, two thermosensitive temperature sensors NTC1, NTC2 are connected to the ad_bot terminal of the IC chip; the BM1, BM2 and BM3 ends of the coding switch circuit are connected with the IC chip, and the coding switch circuit can be used for realizing menu function selection;

illustratively, the heating control mechanism is characterized in that a plurality of thermosensitive temperature sensors are implanted on the contact surface of a preset heating body, the thermosensitive temperature sensors are used for collecting temperature signals of the preset heating body and transmitting the temperature signals to the IC chip 200, the IC chip 200 judges the temperature signals, a corresponding working mode is selected according to a temperature-time curve relationship, and the IC chip 200 controls the on-off of the relay circuit 400, so that the processing of foods can be completed without manual selection; the heating control mechanism realizes accurate temperature control through the thermosensitive temperature sensor and the IC chip 200, and can realize the technical effects of improving the sensing sensitivity of temperature control and cooking automation.

Exemplary embodiments of the present utility model provide a heating apparatus including a heater and a heating control mechanism shown in fig. 1a to 1e, the heater being connected to the heating control mechanism.

Referring to fig. 2, fig. 2 is a flow chart of a heating control method according to an embodiment of the present utility model, and fig. 3 is a temperature-time relationship chart of a preset operation mode according to an embodiment of the present utility model; as shown in fig. 3, the operating intervals are divided by dashed lines, the solid lines representing temperature-time curves that may occur when the heating device is in operation.

The heating control method is exemplarily applied to the heating apparatus described above, and includes the steps of:

s100: controlling the heater to operate at a preset power for a first time to obtain a first temperature-time curve;

s200: controlling the heater to operate for a second time at a preset power to obtain a second temperature-time curve;

s300: generating curve interval data according to the first temperature-time curve and the second temperature-time curve;

s400: and matching the curve interval data with a preset operation mode, and controlling the heating device to work in the preset operation mode.

Illustratively, when the heating control method just starts to work, the temperature data is fed back to the IC chip for a plurality of times through the thermosensitive temperature sensor, and the IC chip accurately judges the working mode required by a user according to the obtained first temperature-time curve and second temperature-time curve; therefore, through two sections of operation conditions (a first temperature-time curve and a second temperature-time curve) of the heater, the operation mode required by the heater can be judged more accurately, the sensing sensitivity of temperature control is improved, the processing treatment of food is completed without manual early selection, and the cooking automation is realized.

Illustratively, the preset operation modes in the embodiment of the present utility model may include a cooking mode, a cooking mode and a frying mode.

Illustratively, the preset operating mode is a cooking mode, S400: the method comprises the steps of matching a preset operation mode according to curve interval data, and controlling the heating device to work in the preset operation mode, wherein the method comprises the following steps of:

acquiring temperature information acquired by a thermosensitive temperature sensor, and controlling a heating device to heat in the following manner:

when the temperature information is greater than the first threshold value, the heating device stops heating; when the temperature information is smaller than the second threshold value, the heating device continuously heats; when the temperature information is larger than a third threshold value, the heating device generates alarm information and stops heating; the second threshold value, the first threshold value and the third threshold value are sequentially increased.

Illustratively, the preset operating mode is a fry-roast mode, S400: the method comprises the steps of matching a preset operation mode according to curve interval data, and controlling the heating device to work in the preset operation mode, wherein the method comprises the following steps of:

the heating device continuously heats, and generates alarm information when the temperature information is larger than a fourth threshold value; when the temperature information is greater than a fifth threshold value, the heating device stops heating; when the temperature information is smaller than the sixth threshold value, the heating device continuously heats; the fourth threshold value, the sixth threshold value and the fifth threshold value are sequentially increased.

Illustratively, the preset operation mode is a cooking mode, S400: the method comprises the steps of matching a preset operation mode according to curve interval data, and controlling the heating device to work in the preset operation mode, wherein the method comprises the following steps of:

the heating device continuously heats, and generates alarm information when the temperature information is larger than a seventh threshold value; when the temperature information is greater than the eighth threshold value, the heating device stops heating; when the temperature information is smaller than the ninth threshold value, the heating device continuously heats; wherein the seventh threshold value, the ninth threshold value and the eighth threshold value are sequentially increased.

In some implementation scenarios, the heating control method accurately judges the working mode of the user through the change relation of the temperature-time relation curve; referring to fig. 2 and 3, the specific flow steps of the heating control method are exemplified as follows:

step 1: the heating device was heated at full power (1600W) for 10 seconds, and stopped for 5 seconds to obtain a first temperature-time curve (the section in which the first temperature-time curve was determined).

Step 2: the machine was heated at full power (1600W) for 10 seconds, and stopped for 5 seconds to obtain a second temperature-time curve (the section in which the second temperature-time curve was determined).

Step 3: generating curve interval data according to the interval where the first temperature-time curve is located and the interval where the second temperature-time curve is located;

step 4: when the first interval and the second interval are in the same interval, the IC chip matches a preset operation mode according to the curve interval data to work;

step 4.1: if the first interval (corresponding to the cooking mode, the hot pot or the cooking function) is judged, the heating device always heats the water to be boiled, and when the temperature sensor senses 100 ℃, the relay is powered off; and when the thermosensitive temperature sensor senses 95 ℃, heating is recovered, and the cycle is sequentially carried out. The manually adjusted heating temperature in this mode does not exceed 100 ℃. When the water in the pot is boiled to be dry, when the dry heating and flushing temperature exceeds 110 ℃, the alarm is given for 5 seconds, if the user does not operate, the machine can be automatically powered off, and the lowest heat preservation mode is entered.

Step 4.2: if the third interval (corresponding to the frying and baking mode and realizing the frying and baking function) is judged, the heating device is heated to 150 ℃ all the time, the machine is powered off, an alarm is given for 5 seconds, and if the user does not operate, the heating device is continuously heated until the temperature sensor senses 240 ℃, and the relay is powered off. And when the thermosensitive temperature sensor senses 220 ℃, heating is recovered. And sequentially circulating. The manually adjusted heating temperature in this mode does not exceed 240 ℃.

Step 4.3: if the second interval (corresponding to the cooking mode and realizing the cooking function) is judged, the heating device is heated to 150 ℃ all the time, the machine is powered off, an alarm is given for 5 seconds, and if the user does not operate, the heating device is continuously heated until the temperature sensor senses 220 ℃, and the relay is powered off. And when the thermosensitive temperature sensor senses 200 ℃, heating is recovered. And sequentially circulating.

In the cooking mode, when cold water is added during cooking, the temperature drops sharply, and the intelligent judging mode is unchanged at the moment and continues to operate in the initial working mode. If a large amount of water is added, the temperature of the thermosensitive temperature sensor is not higher than 110 ℃ all the time, and the heating device can continuously heat to perform stewing or stewing functions. And (5) after the water in the pot is dried and is dry-burned, the pot is operated at the set temperature of the chafing dish menu.

By means of the heating control method, a selection mode of a working menu can be simplified, and the problems that all heating products in the market cannot be accurately controlled in temperature, multiple purposes can not be achieved by one machine and the menu is complex are solved; the heating control method at least comprises the following advantages: the aim of accurate temperature control is achieved through the thermosensitive temperature sensor, so that the taste of food can be improved; the device can work in a dry heating mode, does not generate fire, and can accurately control the temperature in the dry heating mode, thereby achieving the aim of multiple purposes; by setting the temperature threshold (a first threshold, a second threshold and the like), the temperature can be regulated and controlled at any time in the working process, the temperature is safe and reliable, the condition of high temperature flushing can not occur, and the highest temperature can not exceed the highest frying and baking temperature; in addition, the heating control mechanism effectively solves the problems of low temperature, short service life of elements and the like caused by long on-off time.

In all embodiments of the present utility model, "large" and "small" are relative terms, "more" and "less" are relative terms, "upper" and "lower" are relative terms, and the description of such relative terms is not repeated herein.

It should be appreciated that reference throughout this specification to "in this embodiment," "in an embodiment of the present utility model," or "as an alternative" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present utility model. Thus, the appearances of the phrases "in this embodiment," "in an embodiment of the utility model," or "as an alternative embodiment" in various places throughout this specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Those skilled in the art will also appreciate that the embodiments described in the specification are alternative embodiments and that the acts and modules referred to are not necessarily required for the present utility model.

In various embodiments of the present utility model, it should be understood that the sequence numbers of the foregoing processes do not imply that the execution sequences of the processes should be determined by the functions and internal logic of the processes, and should not be construed as limiting the implementation of the embodiments of the present utility model.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the utility model shall be subject to the protection scope of the claims.

Claims

1. The heating control mechanism is characterized by comprising a thermosensitive temperature sensor assembly, an IC chip, a power supply conversion circuit and a relay circuit;

2. The heating control mechanism of claim 1, wherein the relay circuit comprises a relay and a triode;

3. The heating control mechanism of claim 2, wherein the relay circuit further comprises a diode connected to the second terminal of the relay and the fourth terminal of the relay, respectively.

4. The heating control mechanism according to claim 1, wherein the power supply conversion circuit includes an ac/dc conversion chip, and the ac power supply is converted into a dc power supply of a predetermined voltage by the ac/dc conversion chip to supply power to the IC chip and the relay circuit.

5. The heating control mechanism of claim 1, further comprising a display circuit coupled to the IC chip.

6. The heating control mechanism of claim 1, further comprising a switching circuit, wherein the thermally sensitive temperature sensor is coupled to the IC chip via the switching circuit.

7. The heating control mechanism of claim 6 wherein the temperature sensitive temperature sensor is an NTC thermistor.

8. A heating apparatus comprising a heater and the heating control mechanism of any one of claims 1 to 7, the heater being connected to the heating control mechanism.