Temperature control device and method, graphene heating film temperature control and heating device and vaporizer

Abstract

The present application relates to a temperature control device and method, a graphene heating film temperature control and heating device and a vaporizer. A temperature sensor is arranged on the surface of the graphene heating film, and the temperature sensor is electrically connected to the controller. The temperature sensor senses the temperature of the graphene heating film; the relay is electrically connected to the graphene heating film, and the relay is also electrically connected to the controller; the controller controls the start and stop of the graphene heating film and its heating time through the relay, and also controls the graphene heating film to stop working according to the temperature through the relay; the controller is also electrically connected to the switching power supply, and the switching power supply is powered. By detecting the temperature of the graphene heating film, it is determined that the graphene heating film is controlled to stop working when necessary, thereby effectively avoiding the safety problem of the graphene heating film overheating and uncontrolled combustion, especially avoiding the safety risk caused by the graphene heating film overheating and uncontrolled combustion after aging. Under this premise, the vaporization capacity of the vaporizer and its effective service life are guaranteed, and the normal operation of the gas supply system is ensured.

Description

Technical Field

[0001] The present application relates to the field of carburetor defrosting, and in particular to a temperature control device and method, a graphene heating film temperature control and heating device and a carburetor, that is, a graphene heating film temperature control device, a graphene heating film temperature control method, a graphene heating film temperature control and heating device and a graphene heating type carburetor. Background Art

[0002] A vaporizer is a device that heats liquid gas to vaporize. Vaporizers mainly include electric heating type, electric water bath type and hot water circulation type. With the development of vaporizer technology, air-temperature vaporizers have emerged. Traditional air-temperature vaporizers are usually fin-tube heat exchangers. Low-temperature liquid enters from the bottom of one side of the vaporizer and is discharged from the other side of the vaporizer after vaporization. After the low-temperature liquid enters the fin tube, it exchanges heat with the outside air through the surface of the fin tube. The water vapor in the air forms a large amount of frost on the outer surface of the fin tube at the bottom of the vaporizer. As the working time of the vaporizer increases, the frost on the lower surface of the vaporizer becomes heavier. When the vaporizer stops working, the frost on the fin tube turns into water. When the vaporizer works again, the water formed by the frost begins to freeze, and this cycle repeats. After the vaporizer has been used for a period of time, a thick layer of ice forms on its surface, and the vaporization capacity of the vaporizer is greatly reduced, resulting in insufficient gas supply. In severe cases, the liquid gas is not completely vaporized, and the gas-liquid mixture flows into the rear end, affecting the normal operation of the gas supply system.

[0003] In order to solve the above technical problems, manual de-icing is usually used or another vaporizer is directly replaced, which increases the cost of use for users. The applicant disclosed a graphene heated vaporizer in Chinese patent CN202122705213.2 to solve the above problems. However, the graphene heating film used in the graphene heated vaporizer may overheat after aging, and then burn out of control. Specifically, the graphene heating film will age after long-term use, causing the temperature of the vaporizer to continue to increase slowly. When the temperature exceeds 120°C and reaches the upper temperature limit of the internal material of the graphene heating film, the temperature of the graphene heating film will rise rapidly, and it may burn out of control, causing serious safety problems. Summary of the invention

[0004] Based on this, it is necessary to provide a temperature control device of a graphene heating film, a temperature control method of a graphene heating film, a graphene heating film temperature control and heating device, and a graphene heating vaporizer.

[0005] A temperature control device for a graphene heating film, comprising: a temperature sensor, a relay, a controller and a switching power supply;

[0006] The temperature sensor is arranged on the surface of the graphene heating film, the temperature sensor is electrically connected to the controller, and the temperature sensor is used to sense the temperature of the graphene heating film;

[0007] The relay is used to be electrically connected to the graphene heating film, and the relay is also electrically connected to the controller;

[0008] The controller is used to control the start and stop of the graphene heating film and its heating time through the relay, and also controls the graphene heating film to stop working through the relay according to the temperature;

[0009] The controller is also electrically connected to the switching power supply, and the switching power supply is used to receive electricity.

[0010] The temperature control device of the above-mentioned graphene heating film detects the temperature of the graphene heating film and determines to control the graphene heating film to stop working when necessary, thereby effectively avoiding the safety problem of uncontrolled combustion due to overheating of the graphene heating film, especially avoiding the safety risk caused by overheating and uncontrolled combustion of the graphene heating film after aging. On this premise, the vaporization capacity of the vaporizer and its effective service life are guaranteed, ensuring the normal operation of the gas supply system.

[0011] In one embodiment, the controller includes a microprocessor, a temperature measurement system, a temperature control system, an electric control system, and a time-sharing and zone-sharing heating control system;

[0012] The temperature measurement system is electrically connected to the temperature sensor and the microprocessor respectively, and is used to measure the resistance of the temperature sensor with a certain measurement power, and calculate the temperature of the temperature sensor according to a preset resistance-temperature curve as the temperature of the graphene heating film;

[0013] The temperature control system is electrically connected to the relay and the microprocessor respectively, and the temperature control system is used to control the relay to stop supplying power to the graphene heating film when receiving a power-off instruction from the microprocessor;

[0014] The time-sharing and zoned heating control system is electrically connected to the relay and the microprocessor respectively, and the time-sharing and zoned heating control system is used to control the start and stop of the graphene heating film and its heating time through the relay when receiving the temperature control instruction of the microprocessor;

[0015] The electric control system is electrically connected to the switching power supply for accessing the power supply; the electric control system is also electrically connected to the temperature measurement system, the temperature control system, the time-sharing and zoned heating control system and the microprocessor for power supply.

[0016] In one of the embodiments, the temperature control system is used to output an instantaneous large current to the relay when receiving a power-off command from the microprocessor, so that the relay is disconnected to stop supplying power to the graphene heating film.

[0017] In one embodiment, the microprocessor is used to send a temperature control instruction to the time-sharing and zoned heating control system when the graphene heating film is in a state of surface ice formation; and / or,

[0018] The microprocessor is used to send a power-off instruction to the temperature control system when the temperature exceeds a preset threshold.

[0019] In one of the embodiments, the controller is used to determine whether the graphene heating film is in a state of surface icing through the temperature and / or calculate the heating time of the graphene heating film.

[0020] In one embodiment, the temperature sensor comprises an NTC temperature sensor; and / or,

[0021] When the temperature exceeds a preset threshold, the controller controls the graphene heating film to stop working through the relay; and / or,

[0022] The preset threshold is a temperature value between 115 degrees Celsius and 125 degrees Celsius.

[0023] In one of the embodiments, the controller is provided with a timing unit, which is used to calculate the cumulative heating time of the graphene heating film. The controller is used to control the graphene heating film to stop working through the relay according to the temperature after the cumulative heating time reaches the target threshold.

[0024] In one of the embodiments, a temperature control method for a graphene heating film includes the following steps: when it is determined that the graphene heating film needs to be started, the controller controls the start and stop of the graphene heating film and its heating time through a relay; senses the temperature of the graphene heating film; when it is determined that the temperature exceeds a preset threshold, the controller controls the graphene heating film to stop working through a relay.

[0025] In one of the embodiments, a graphene heating film temperature control and heating device comprises a graphene heating film and a temperature control device of any one of the graphene heating films.

[0026] In one embodiment, a graphene-heated vaporizer includes a vaporizer body and a fin tube mounted on the vaporizer body, and also includes a graphene heating film and a temperature control device of any one of the graphene heating films;

[0027] A piece of the graphene heating film is arranged on each fin of the fin tube, and the temperature sensor is arranged on the surface of at least one piece of the graphene heating film.

[0028] In one of the embodiments, the number of the temperature sensors is the same as the number of the fin tubes, and a temperature sensor is arranged on the surface of the graphene heating film on one of the fins of each of the fin tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. 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 creative work.

[0030] Figure 1 This is a schematic diagram of the framework structure of an embodiment of a temperature control device for the graphene heating film described in this application.

[0031] Figure 2 This is a schematic diagram of the framework structure of another embodiment of the temperature control device of the graphene heating film described in this application.

[0032] Figure 3 This is a flow chart of an embodiment of a temperature control method for a graphene heating film described in this application.

[0033] Figure 4 This is a schematic diagram of the application of another embodiment of the temperature control device of the graphene heating film described in this application.

[0034] Figure 5 This is a schematic diagram of the framework structure of an embodiment of the graphene heating film temperature control and heating device described in this application.

[0035] Figure 6 This is a partial structural schematic diagram of an embodiment of the graphene-heated vaporizer described in this application.

[0036] Figure 7 This is a partial structural schematic diagram of another embodiment of the graphene-heated vaporizer described in this application.

[0037] Figure 8 This is a partial structural schematic diagram of another embodiment of the graphene-heated vaporizer described in this application.

[0038] Fig. 9 This is a partial structural schematic diagram of another embodiment of the graphene-heating vaporizer described in this application.

[0039] Reference numerals: temperature sensor 110 , relay 120 , controller 130 , switching power supply 140 , fin tube 200 , fin 210 , graphene heating film 300 . DETAILED DESCRIPTION

[0040] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0041] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0045] The present application discloses a temperature control device and method, a graphene heating film temperature control and heating device and a vaporizer, which may include some or all structures, some or all steps of the following embodiments; that is, the temperature control device and method, the graphene heating film temperature control and heating device and the vaporizer include some or all technical features of the following. In one embodiment of the present application, a temperature control device of a graphene heating film such as Figure 1 As shown, it includes a temperature sensor, a relay, a controller and a switching power supply; the temperature sensor is arranged on the surface of the graphene heating film, the temperature sensor is electrically connected to the controller, and the temperature sensor is used to sense the temperature of the graphene heating film; the relay is used to be electrically connected to the graphene heating film, and the relay is also electrically connected to the controller; the controller is used to control the start and stop of the graphene heating film and its heating time through the relay, and also control the graphene heating film to stop working according to the temperature through the relay; the controller is also electrically connected to the switching power supply, and the switching power supply is used to connect electricity. The temperature control device of the above-mentioned graphene heating film detects the temperature of the graphene heating film and determines to control the graphene heating film to stop working when necessary, thereby effectively avoiding the safety problem of over-temperature and uncontrolled combustion of the graphene heating film, especially avoiding the safety risk caused by over-temperature and uncontrolled combustion of the graphene heating film after aging, and on this premise, the vaporization capacity and effective service life of the vaporizer are guaranteed, and the normal operation of the gas supply system is ensured.

[0046] In order to control the operation of the graphene heating film, in one embodiment, the relay is electrically connected to the graphene heating film and the controller respectively; under the control of the controller, the relay is electrically connected to the graphene heating film to start the graphene heating film and enter the working state, that is, to start heating, or disconnect the graphene heating film to stop the graphene heating film, that is, to end heating. With such a design, the controller can accurately control the start and stop of the graphene heating film and its heating time through the relay, that is, to control the heating time of the graphene heating film. Further, the controller is also used to calculate or record the cumulative heating time of the graphene heating film according to the heating time. For multiple embodiments of graphene heating films, the controller is also used to calculate or record the cumulative heating time of the graphene heating film according to the heating time of each graphene heating film. Such a design comprehensively considers the working condition and aging degree of the graphene heating film, which is conducive to avoiding the problem of uncontrolled combustion that may occur due to aging of the graphene heating film after long-term use.

[0047] In order to detect the temperature of the graphene heating film, in one embodiment, the temperature control device of the graphene heating film includes a plurality of temperature sensors, each of which is arranged on the surface of a graphene heating film, or each of which is arranged on the surface of one of a group of graphene heating films. The temperature sensor is used to sense the temperature of the graphene heating film. Furthermore, under normal circumstances, the temperature sensed by the temperature sensor may be slightly lower than the temperature of the graphene heating film. Since the temperature sensor is electrically connected to the controller, the temperature of the temperature sensor can be calculated using a preset resistance-temperature curve, and the accurate temperature of the graphene heating film can be obtained by combining the adjustment curve. In one embodiment, the temperature sensor includes but is not limited to an NTC temperature sensor; the NTC temperature sensor is a thermistor, which is characterized in that under a certain measurement power, the resistance value decreases rapidly as the temperature rises, and its temperature can be judged by resistance using its resistance-temperature curve.

[0048] Detecting the temperature of the graphene heating film and its subsequent response processing are important design goals of this application. In one embodiment, the controller is used to determine whether the graphene heating film is in a state of surface icing by the temperature. In one embodiment, the controller is also used to calculate the heating time of the graphene heating film by the temperature. In one embodiment, the controller is used to determine whether the graphene heating film is in a state of surface icing by the temperature and calculate the heating time of the graphene heating film. The rest of the embodiments are similar and will not be repeated. Further, in one embodiment, the controller also determines the ice thickness through a camera or an APP signal, and calculates the heating time of the graphene heating film according to the ice thickness. Alternatively, the temperature control device of the graphene heating film, that is, the temperature control device, also includes a camera, a weight sensor or a pressure sensor, and the controller determines the ice thickness through the weight sensor or the pressure sensor, calculates the heating time of the graphene heating film according to the ice thickness, and controls the start and stop of the graphene heating film and its heating time through the relay to achieve the cleaning effect of defrosting and deicing. This design ensures the vaporization capacity of the vaporizer and its effective service life, and ensures the normal operation of the gas supply system.

[0049] Moreover, the controller controls the graphene heating film to stop working through the relay according to the temperature. In one embodiment, the controller controls the graphene heating film to stop working through the relay when the temperature exceeds the preset threshold; that is, the controller controls the graphene heating film to stop working through the relay when the temperature exceeds the preset threshold; the temperature, i.e., the accurate temperature of the graphene heating film, can usually be replaced by the temperature of the temperature sensor, or the temperature of the temperature sensor combined with the adjustment curve can be used to calculate the accurate temperature of the graphene heating film, and the adjustment curve is obtained according to the test or experiment. In one embodiment, the preset threshold is a temperature value between 115 degrees Celsius and 125 degrees Celsius. In one embodiment, the preset threshold is 120 degrees Celsius. Such a design, by detecting the temperature of the graphene heating film, determines to control the graphene heating film to stop working when necessary, thereby effectively avoiding the safety problem of over-temperature and uncontrolled combustion of the graphene heating film, especially avoiding the safety risk caused by over-temperature and uncontrolled combustion of the graphene heating film after aging.

[0050] In one embodiment, the controller is also electrically connected to the switching power supply, and the switching power supply is used to connect electricity. The function of the switching power supply is to convert the AC mains with a voltage of 220V or 224V or other voltages into direct current that can be used by the graphene heating film, and the voltage of the direct current is 12V to 48V.

[0051] Further, in one embodiment, the controller includes a microprocessor (MCU), a temperature measurement system, an electric control system and a time-sharing and partitioned heating control system; the temperature measurement system is electrically connected to the temperature sensor and the microprocessor respectively, the temperature measurement system is used to use a certain measurement power to measure the resistance of the temperature sensor, and calculate the temperature of the temperature sensor according to a preset resistance-temperature curve as the temperature of the graphene heating film; the microprocessor is used to control the graphene heating film to stop working through the relay according to the temperature; the time-sharing and partitioned heating control system is electrically connected to the relay and the microprocessor respectively, and the time-sharing and partitioned heating control system is used to control the start and stop of the graphene heating film and its heating time through the relay when receiving the temperature control instruction of the microprocessor; the electric control system is electrically connected to the switching power supply for connecting to the power supply; the electric control system is also electrically connected to the temperature measurement system, the time-sharing and partitioned heating control system and the microprocessor respectively for power supply. In each embodiment, the controller can also be called an intelligent controller, the microprocessor can also be called a control core MCU, and the time-sharing and partitioned heating control system can also be called a time-sharing and partitioned heating intelligent control system.

[0052] In one embodiment, the controller further comprises a temperature control system, the temperature control system is electrically connected to the relay and the microprocessor respectively, and the temperature control system is used to control the relay to stop supplying power to the graphene heating film when receiving a power-off instruction from the microprocessor; In one embodiment, a temperature control device for a graphene heating film is as follows Figure 2As shown, the controller includes a microprocessor, a temperature measurement system, a temperature control system, an electric control system and a time-sharing and zoned heating control system; the temperature measurement system is electrically connected to the temperature sensor and the microprocessor respectively, and the temperature measurement system is used to use a certain measurement power to measure the resistance of the temperature sensor, and calculate the temperature of the temperature sensor according to a preset resistance-temperature curve as the temperature of the graphene heating film; the temperature control system is electrically connected to the relay and the microprocessor respectively, and the temperature control system is used to control the relay to stop supplying power to the graphene heating film when receiving a power-off command from the microprocessor; the time-sharing and zoned heating control system is electrically connected to the relay and the microprocessor respectively. The microprocessor is electrically connected, and the time-sharing and zoned heating control system is used to control the start and stop of the graphene heating film and its heating time through the relay when receiving the temperature control instruction of the microprocessor; the electric control system is electrically connected to the switching power supply for connecting to the power supply; the electric control system is also electrically connected to the temperature measurement system, the temperature control system, the time-sharing and zoned heating control system and the microprocessor respectively for power supply; further, the electric control system is also used to realize the on and off of the power supply line under the control of the microprocessor, that is, the microprocessor is used to control the power supply status of the temperature measurement system, the temperature control system and the time-sharing and zoned heating control system through the electric control system. Compared with traditional technology, such a design is beneficial in, on the one hand, determining the temperature of the graphene heating film through the temperature measurement system, and on the other hand, directly determining whether it is necessary to control the relay to stop supplying power to the graphene heating film through the temperature control system. On the other hand, it is beneficial to control multiple graphene heating films separately through the time-sharing and zoned heating control system, and is particularly suitable for one controller to realize the temperature control of multiple graphene heating films; on the other hand, it is beneficial to realize the setting of whether to supply power through the electronic control system in conjunction with the microprocessor, and has the advantages of simple control, easy implementation, and low cost.

[0053] In order to avoid the safety problem of uncontrolled combustion due to over-temperature of the graphene heating film, in one embodiment, the temperature control system is used to output an instantaneous large current to the relay when receiving the power-off command of the microprocessor, so that the relay is disconnected to stop supplying power to the graphene heating film. Furthermore, the microprocessor assigns the highest priority processing level to the power-off command. Such a design is conducive to timely and rapid processing before extreme situations are about to occur. The disconnection of the relay is very efficient, so it is conducive to ensuring the normal operation of the graphene heating film and maintaining the design life of the graphene heating film. Because the temperature of the graphene heating film is relatively high, even if it stops working, it can still achieve a defrosting effect to a certain extent.

[0054] In one embodiment, the microprocessor is used to send a temperature control instruction to the time-sharing and partitioned heating control system when the graphene heating film is in a state of surface ice formation; further, for different graphene heating films, the microprocessor determines whether each graphene heating film is in a state of surface ice formation, and sends a separate temperature control instruction to the time-sharing and partitioned heating control system for each graphene heating film in a state of surface ice formation, and the time-sharing and partitioned heating control system controls the start and stop of the graphene heating film and its heating time through the relay; or, for multiple groups of graphene heating films, the microprocessor determines whether each or any one of the graphene heating films in each group is in a state of surface ice formation, and sends a separate temperature control instruction to the time-sharing and partitioned heating control system for each graphene heating film in a state of surface ice formation, and the time-sharing and partitioned heating control system controls the start and stop of the graphene heating film and its heating time by group through the relay, that is, the graphene heating films in each group are heated at the same time, and stop heating at the same time. In one of the embodiments, the microprocessor is used to send a power-off instruction to the temperature control system when the temperature exceeds a preset threshold. In one of the embodiments, the microprocessor is used to send a temperature control instruction to the time-sharing and zoned heating control system when the graphene heating film is in a state where ice forms on the surface, and send a power-off instruction to the temperature control system when the temperature exceeds a preset threshold. The remaining embodiments are similar and will not be described in detail. Such a design is conducive to controlling each graphene heating film individually, or to group several graphene heating films and control each graphene heating film in groups, so it is conducive to accurately cleaning the location of surface ice, while saving energy consumption, achieving a cleaning effect, and also extending the normal service life of the graphene heating film, avoiding the risk of over-temperature and uncontrolled combustion of the graphene heating film.

[0055] In one embodiment, the controller is provided with a timing unit, and the timing unit is used to calculate the cumulative heating time of the graphene heating film, and the controller is used to control the graphene heating film to stop working through the relay according to the temperature after the cumulative heating time reaches the target threshold. Further, in one embodiment, the target threshold is a time value between 500 hours and 1000 hours. Further, the controller is used to adjust the preset threshold for the graphene heating film after the cumulative heating time reaches the target threshold, and further, the preset threshold is adjusted down to a temperature value between 0.5 degrees Celsius and 5 degrees Celsius, for example, by 1 degree Celsius or 0.5 degrees Celsius, etc. In this case, the longer the graphene heating film works, the more serious the aging, the stricter the corresponding temperature control, and the lower the preset threshold. When necessary, the graphene heating film is controlled to stop working, thereby effectively avoiding the safety problem of over-temperature and uncontrolled combustion of the graphene heating film, especially avoiding the safety risk caused by over-temperature and uncontrolled combustion of the graphene heating film after aging.

[0056] Furthermore, for an embodiment with multiple graphene heating films, the temperature control device of the graphene heating film is correspondingly provided with multiple temperature sensors. When the number of the temperature sensors is at least two, the timing unit calculates the cumulative heating time for each connected graphene heating film according to each temperature sensor, and the controller is used to control the corresponding graphene heating film to stop working through the relay according to the temperature after each cumulative heating time reaches the target threshold. Further, for an embodiment of group control of graphene heating films, the timing unit calculates the cumulative heating time for each connected graphene heating film according to each temperature sensor, and the controller is used to control the corresponding group of graphene heating films to stop working through the relay according to the temperature after each cumulative heating time reaches the target threshold. Such a design is conducive to the realization of large-scale applications, and is particularly suitable for application scenarios where a large number of graphene heating films are used for heating. Since each graphene heating film or each group of graphene heating films is individually controlled, it is beneficial to achieve over-temperature stop for each graphene heating film or each group of graphene heating films, thereby effectively avoiding the safety risks caused by overheating and uncontrolled combustion of the graphene heating film after aging.

[0057] The following is an example of the temperature control device of the graphene heating film, which is used to control the temperature of the graphene heating film, and can therefore also be called a control device to prevent the graphene heating film for air temperature vaporizer from overheating, and includes a temperature sensor, a relay, an intelligent controller and a switching power supply installed on the surface of the graphene heating film. Among them, the temperature sensor is located on the surface of the graphene heating film and is electrically connected to the intelligent controller, the graphene heating film is electrically connected to the relay, the relay is electrically connected to the intelligent controller, the intelligent controller is electrically connected to the switching power supply, and the switching power supply is connected to the AC mains. The intelligent controller includes a control core MCU, a temperature measurement system, a temperature control system, an electric control system and a time-sharing and zoned heating intelligent control system.

[0058] The temperature measurement system is used to provide a certain measurement power to the temperature sensor and measure its resistance, thereby calculating its temperature according to the resistance-temperature curve.

[0059] The temperature control system is used to receive instructions from the control core MCU and output an instantaneous large current to the relay to disconnect it, thereby stopping the supply of power to the graphene heating film.

[0060] The functions of the electronic control system include: converting the 24V DC power input by the switching power supply into 5V DC power to supply power to the control core MCU, the temperature measurement system, the temperature control system and the time-sharing and zoned heating intelligent control system; and controlling the internal circuit of the intelligent controller according to the instructions of the control core MCU.

[0061] The time-sharing and zone-sharing heating intelligent control system is used to accept instructions from the control core MCU and control the start and stop of the graphene heating film in different areas of the vaporizer and the heating time.

[0062] Using the temperature control device of the graphene heating film, other embodiments of the present application also provide a control method to prevent the graphene heating film for air temperature vaporizer from overheating, including the following steps: the temperature sensor and the intelligent controller temperature measurement system monitor the surface temperature of the graphene heating film in real time and transmit the data to the control core MCU; the control core MCU compares the collected temperature with the maximum limit temperature of 120°C. If the temperature exceeds 120°C, it sends an instruction to the temperature control system, and the temperature control system outputs an instantaneous large current to the relay to disconnect it and stop supplying power to the graphene heating film. In one of the embodiments, a temperature control method for a graphene heating film includes the following steps: when it is determined that the graphene heating film needs to be started, the controller controls the start and stop of the graphene heating film and its heating time through a relay; senses the temperature of the graphene heating film; when it is determined that the temperature exceeds a preset threshold, the controller controls the graphene heating film to stop working through a relay. In one of the embodiments, the temperature control method for the graphene heating film is implemented by using the temperature control device of the graphene heating film described in any embodiment. In one of the embodiments, a temperature control method for a graphene heating film such as Figure 3 As shown, it includes the following steps: judging whether the graphene heating film needs to be started, if yes, then executing the next step; the controller controls the start and stop of the graphene heating film and its heating time through a relay; sensing the temperature of the graphene heating film; judging whether the temperature exceeds a preset threshold, if yes, then executing the next step; the controller controls the graphene heating film to stop working through a relay. The above control method for preventing the graphene heating film for air temperature vaporizer from overheating can be implemented by local calculation of the intelligent controller, or by uploading data to a cloud server or APP.

[0063] like Figure 4 As shown, the cloud server is connected to the APP and interacts with the APP; the cloud server is also connected to the communication interface of the controller through a communication module, and the communication module includes but is not limited to a 4G communication module and a 5G communication module. The time-sharing and zoned heating control system of the controller, that is, the time-sharing and zoned heating intelligent control system, is connected to the operation interface and the linkage system, and can also be connected to the graphene heating film through a relay; the temperature control system of the controller is connected to the graphene heating film through a relay; the electronic control unit of the controller, that is, the electronic control system, is electrically connected to the switching power supply, and is also connected to each functional module to provide power; the temperature measurement system of the controller is connected to the temperature sensor; the controller connects each functional module through its microprocessor, that is, the control core MCU, to realize the control function, as described above, and will not be repeated.

[0064] In one embodiment, a graphene heating film temperature control and heating device comprises a graphene heating film and a temperature control device of the graphene heating film described in any embodiment. In one embodiment, the graphene heating film temperature control and heating device is as follows: Figure 5As shown, it includes a graphene heating film and a temperature control device of the graphene heating film, and the temperature control device of the graphene heating film includes a temperature sensor, a relay, a controller and a switching power supply; the temperature sensor is arranged on the surface of the graphene heating film, the temperature sensor is electrically connected to the controller, and the temperature sensor is used to sense the temperature of the graphene heating film; the relay is used to be electrically connected to the graphene heating film, and the relay is also electrically connected to the controller; the controller is used to control the start and stop of the graphene heating film and its heating time through the relay, and also controls the graphene heating film to stop working according to the temperature through the relay; the controller is also electrically connected to the switching power supply, and the switching power supply is used to connect to electricity. The rest of the embodiments are similar and will not be described in detail.

[0065] In one of the embodiments, a graphene-heated vaporizer includes a vaporizer body and a fin tube installed on the vaporizer body, and also includes a graphene heating film and a temperature control device of the graphene heating film described in any embodiment; a piece of the graphene heating film is arranged on each fin of the fin tube, and the temperature sensor is arranged on the surface of at least one piece of the graphene heating film. In one embodiment, the graphene heating vaporizer includes a vaporizer body, a fin tube, a graphene heating film and a temperature control device of the graphene heating film; the temperature control device of the graphene heating film includes a temperature sensor, a relay, a controller and a switching power supply; the temperature sensor is arranged on the surface of the graphene heating film, the temperature sensor is electrically connected to the controller, and the temperature sensor is used to sense the temperature of the graphene heating film; the relay is used to be electrically connected to the graphene heating film, and the relay is also electrically connected to the controller; the controller is used to control the start and stop of the graphene heating film and its heating time through the relay, and also controls the graphene heating film to stop working according to the temperature through the relay; the controller is also electrically connected to the switching power supply, and the switching power supply is used to connect electricity; a piece of the graphene heating film is arranged on each fin of the fin tube, and the temperature sensor is arranged on the surface of at least one piece of the graphene heating film. The rest of the embodiments are similar and will not be described in detail.

[0066] In one embodiment, the number of the temperature sensors is the same as the number of the fin tubes, and the graphene heating film on one of the fins of each fin tube has a temperature sensor disposed on its surface. Figure 6As shown, it has three fin tubes 200, and each fin tube 200 is provided with three fins 210. It can be understood that the figure is only for illustration, and the actual specific number may not be the case. A graphene heating film 300 is arranged on each fin 210 of the fin tube 200, and the three graphene heating films 300 on each fin tube 200 are regarded as a group, and a temperature sensor 110 is arranged on the surface of the graphene heating film 300 on one fin 210, that is, three groups of graphene heating films are corresponding to the three fin tubes 200, and one group has three graphene heating films 300, and only one graphene heating film 300 has a temperature sensor 110 arranged on its surface. A total of three temperature sensors 110 are arranged on the three fin tubes 200. In this embodiment, the switching power supply 140 is electrically connected to the controller 130, and the controller 130 is electrically connected to each temperature sensor 110 respectively. The controller 130 is also electrically connected to the relay 120, and the relay 120 is electrically connected to each group of graphene heating films respectively, that is, the three graphene heating films 300 in each group of graphene heating films share a circuit electrically connected to the relay 120.

[0067] In one embodiment, a graphene heated vaporizer such as Figure 7 As shown, Figure 6 What is different from the illustrated embodiment is that, in this embodiment, the relay 120 is electrically connected to each graphene heating film 300 .

[0068] In one embodiment, a graphene heated vaporizer such as Figure 8 As shown, Figure 6 What is different from the illustrated embodiment is that, in this embodiment, the temperature control device of the graphene heating film is provided with three relays 120 , and the three graphene heating films 300 on each fin tube 200 are electrically connected to a relay 120 through a common circuit, and each relay 120 is electrically connected to a controller 130 .

[0069] In one embodiment, a graphene heated vaporizer such as Fig. 9 As shown, Figure 6 What is different from the illustrated embodiment is that, in this embodiment, there are only two fin tubes 200 , and each graphene heating film 300 is electrically connected to the relay 120 through different circuits; and a temperature sensor 110 is provided on the surface of each graphene heating film 300 .

[0070] In one specific application embodiment, there are 12 fin tubes in total in the first two rows near the liquid gas inlet of the vaporizer, for example, each fin tube has 8 fins, and each fin is installed with a graphene heating film for heating and melting ice. A temperature sensor is installed on the surface of one of the graphene heating films on each fin tube, and the graphene heating film is electrically connected to the relay, and then connected to the temperature control system of the intelligent controller, and the temperature sensor is connected to the temperature measurement system of the intelligent controller; the intelligent controller is connected to the switching power supply; the switching power supply is connected to the AC mains. The switching power supply can convert 224V AC mains into DC power that can be used by the heating film, with a voltage of 24V.

[0071] The intelligent controller time-sharing and zoned heating intelligent control system uses a built-in algorithm model to identify whether the graphene heating film surface is frozen. At this time, whether the heating can melt the ice controls the start and stop of the graphene heating film in different areas of the vaporizer and its heating time. The temperature sensor and the intelligent controller temperature measurement system monitor the surface temperature of the graphene heating film in real time and transmit the data to the control core MCU; the control core MCU compares the collected temperature with the maximum limit temperature of 120℃.

[0072] In this embodiment, it is actually observed that the temperature of the graphene heating film exceeds 120°C after working for 500 hours. At this time, the control core MCU sends a command to the temperature control system, and the temperature control system outputs an instantaneous large current to the relay to disconnect it and stop supplying power to the graphene heating film. That is, the target threshold is 500 hours, and the preset threshold is 120°C.

[0073] It should be noted that other embodiments of the present application also include a temperature control device and method that can be implemented by combining the technical features in the above embodiments, a graphene heating film temperature control and heating device, and a vaporizer. The temperature control device is a temperature control device of the graphene heating film, and the vaporizer is a graphene heating type vaporizer.

[0074] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A temperature control device for a graphene heating film, characterized in that: include: Temperature sensors, relays, controllers and switching power supplies; The temperature sensor is arranged on the surface of the graphene heating film, the temperature sensor is electrically connected to the controller, and the temperature sensor is used to sense the temperature of the graphene heating film; The relay is used to be electrically connected to the graphene heating film, and the relay is also electrically connected to the controller; The controller is used to control the start and stop of the graphene heating film and its heating time through the relay, and also determines whether the graphene heating film is in a state of surface icing and calculates the heating time of the graphene heating film according to the temperature, and controls the graphene heating film to stop working through the relay; wherein, the controller is also used to calculate or record the cumulative heating time of the graphene heating film according to the heating time, and after the cumulative heating time reaches the target threshold, controls the graphene heating film to stop working through the relay according to the temperature; The controller is also electrically connected to the switching power supply, and the switching power supply is used to receive electricity.

2. The temperature control device of the graphene heating film according to claim 1, characterized in that: The controller includes a microprocessor, a temperature measurement system, a temperature control system, an electric control system and a time-sharing and zone-sharing heating control system; The temperature measurement system is electrically connected to the temperature sensor and the microprocessor respectively, and is used to measure the resistance of the temperature sensor with a certain measurement power, and calculate the temperature of the temperature sensor according to a preset resistance-temperature curve as the temperature of the graphene heating film; The temperature control system is electrically connected to the relay and the microprocessor respectively, and the temperature control system is used to control the relay to stop supplying power to the graphene heating film when receiving a power-off instruction from the microprocessor; The time-sharing and zoned heating control system is electrically connected to the relay and the microprocessor respectively, and the time-sharing and zoned heating control system is used to control the start and stop of the graphene heating film and its heating time through the relay when receiving the temperature control instruction of the microprocessor; The electric control system is electrically connected to the switching power supply for accessing the power supply. The electric control system is also electrically connected to the temperature measurement system, the temperature control system, the time-sharing and zoned heating control system and the microprocessor for power supply.

3. The temperature control device of the graphene heating film according to claim 2, characterized in that: The temperature control system is used to output an instantaneous large current to the relay when receiving a power-off command from the microprocessor, so that the relay is disconnected to stop supplying power to the graphene heating film.

4. The temperature control device of the graphene heating film according to claim 2, characterized in that: The microprocessor is used to send a temperature control instruction to the time-sharing and zoned heating control system when the graphene heating film is in a state of surface ice formation.

5. The temperature control device of the graphene heating film according to claim 2, characterized in that: The microprocessor is used for sending a power-off instruction to the temperature control system when the temperature exceeds a preset threshold.

6. The temperature control device of the graphene heating film according to claim 1, characterized in that: The temperature sensor includes an NTC temperature sensor.

7. The temperature control device of the graphene heating film according to claim 1, characterized in that: When the temperature exceeds a preset threshold, the controller controls the graphene heating film to stop working through the relay; the controller is also used to lower the preset threshold for the graphene heating film after the cumulative heating time reaches a target threshold.

8. The temperature control device of the graphene heating film according to claim 7, characterized in that: The preset threshold is a temperature value between 115 degrees Celsius and 125 degrees Celsius.

9. The temperature control device of the graphene heating film according to any one of claims 1 to 8, characterized in that: The controller is provided with a timing unit, and the timing unit is used to calculate the cumulative heating time of the graphene heating film.

10. A temperature control method for a graphene heating film, characterized in that: The temperature control method of the graphene heating film is implemented by using the temperature control device of any one of claims 1 to 9, and the temperature control method of the graphene heating film comprises the steps of: When it is determined that the graphene heating film needs to be started, the controller controls the start and stop of the graphene heating film and its heating time through a relay; Sensing the temperature of the graphene heating film; When it is determined that the temperature exceeds a preset threshold, the controller controls the graphene heating film to stop working through a relay.

11. A graphene heating film temperature control and heating device, characterized in that: A temperature control device comprising a graphene heating film and the graphene heating film as claimed in any one of claims 1 to 9.

12. A graphene-heated vaporizer, comprising a vaporizer body and a finned tube mounted on the vaporizer body, characterized in that: It also includes a graphene heating film and a temperature control device for the graphene heating film according to any one of claims 1 to 9; A piece of the graphene heating film is arranged on each fin of the fin tube, and the temperature sensor is arranged on the surface of at least one piece of the graphene heating film.

13. The graphene heated vaporizer according to claim 12, characterized in that: The number of the temperature sensors is the same as the number of the fin tubes, and a temperature sensor is arranged on the surface of the graphene heating film on one of the fins of each of the fin tubes.

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