CN115342528A - Heating control system, heating control method and control device - Google Patents
Heating control system, heating control method and control device Download PDFInfo
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- CN115342528A CN115342528A CN202210948938.0A CN202210948938A CN115342528A CN 115342528 A CN115342528 A CN 115342528A CN 202210948938 A CN202210948938 A CN 202210948938A CN 115342528 A CN115342528 A CN 115342528A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/10—Control of fluid heaters characterised by the purpose of the control
- F24H15/128—Preventing overheating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/305—Control of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/355—Control of heat-generating means in heaters
- F24H15/37—Control of heat-generating means in heaters of electric heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/40—Control of fluid heaters characterised by the type of controllers
- F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/367—Cooling facilitated by shape of device
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Computer Hardware Design (AREA)
- Materials Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Control Of Temperature (AREA)
Abstract
The invention discloses a heating control system, a heating control method and a control device, comprising the following steps: a power supply assembly and a control loop; the power supply assembly comprises a thyristor; two output ends of the thyristor are respectively used for connecting the heating core and a power line, and a control end of the thyristor is connected to the control loop; the control loop comprises a temperature switch, one end of the temperature switch is connected with a control signal, and the other end of the temperature switch is connected with the control end of the thyristor; the thyristor and the temperature switch are respectively arranged on the outer side of the hollow water-cooled radiator, and the water-cooled radiator is used for radiating the thyristor through water flow flowing inside. According to the invention, the temperature switch is additionally arranged, the temperature change of the thyristor is detected at any time, the safe and effective operation of the equipment is effectively controlled, meanwhile, the traditional aluminum-copper radiating fin is replaced by a water-cooling radiator, the product volume is reduced, and the utilization rate of the application space is effectively increased.
Description
Technical Field
The invention relates to the technical field of electric water boilers, in particular to a heating control system, a heating control method and a control device.
Background
Electric water boilers are basically installed in places with dense personnel, such as enterprises, markets, schools, apartments and the like, and provide drinking water service for people. The existing heating water tank has the working mode that the heating water quantity of a water boiler is controlled through an upper limit water level sensor of the water tank, so that the water level in the water tank reaches a fixed water point; the temperature of water is detected by a mechanical temperature controller or a temperature sensor, and then the power-on and power-off of the heating core are controlled. As long as the water level of the water tank is lower than the fixed water level point, the water boiler starts to supplement water; as long as the water temperature is lower than the set temperature, the water boiler starts to heat. Therefore, the water boiler is continuously operated for 24 hours every day. However, in the existing heating water tank, the relay or the contact switch is often used to realize the on/off, the service life is limited, the product safety is affected, and the product volume of the traditional aluminum-copper radiating fin is large, the use requirement of the user can not be well met,
disclosure of Invention
The invention aims to provide a heating control system, a heating control method and a control device, wherein a thyristor is adopted to replace a traditional relay or a contact switch to realize on-off, a water-cooling radiator is adopted to radiate the thyristor, and a temperature switch is adopted to constantly monitor the temperature of the thyristor, so that the problems of large volume and short switch service life of the existing heating water tank heating controller are solved.
A heating control device comprising:
a power supply assembly and a control assembly;
the power supply assembly comprises a thyristor;
two output ends of the thyristor are respectively used for connecting the heating core and a power line, and a control end of the thyristor is connected to the control loop;
the control component comprises a temperature switch, one end of the temperature switch is connected with a control signal, and the other end of the temperature switch is connected with the control end of the thyristor;
the thyristor and the temperature switch are respectively arranged on the outer side of the hollow water-cooled radiator, and the water-cooled radiator is used for radiating the thyristor through water flow flowing inside;
the temperature switch is used for entering a conducting state or a switching-off state according to the temperature of the thyristor, so that the control signal controls the power supply loop to supply power in the conducting state.
Further, still include the tee bend, water-cooling radiator has input, output, tee bend A end and water-cooling radiator's output intercommunication, tee bend B end be used for with the inlet channel intercommunication of water tank, tee bend C end is the evacuation end, tee bend C end sets up the circulation solenoid valve, the circulation solenoid valve is opened or is closed according to temperature switch's state, water-cooling radiator's input is used for connecting the water source that the feed-tank supplied water.
Further, still include the switch circuit module, switch circuit module electric connection circulation solenoid valve.
Furthermore, the switch circuit module is controlled by the control signal and the temperature switch in a linkage mode, and when the temperature switch is in an off state and the control signal is at a high level, the circulating electromagnetic valve is opened.
Further, the switch circuit module comprises a triode Q2 and a switch unit, the triode Q2 and a control signal are linked to control the on-off of the switch unit, a collector of the triode Q2 is connected with the switch unit, an emitter of the triode Q2 is connected with a ground wire, and a base of the triode Q2 is connected between the temperature switch and the thyristor.
Further, the switch unit includes a voltage division circuit composed of a control signal, a resistor R1 and a resistor R2, and further includes an MOS tube Q1, and a G-stage of the MOS tube Q1 and a collector of the triode Q2 are both connected between the resistor R1 and the resistor R2.
Furthermore, the D level of the MOS transistor Q1 is connected with a control signal through a coil of a relay, two ends of the coil are reversely connected with a diode in parallel, and the S level of the MOS transistor Q1 is connected to the ground.
Furthermore, the power line is a three-phase power line, each phase of power line is connected to the heating core through a thyristor, one end of the temperature switch is connected to the control ends of the three thyristors, and the other end of the temperature switch is connected to a control signal.
Furthermore, the thyristors are attached to the outer wall of the water-cooling radiator, and the two temperature switches are respectively installed on the outer wall of the water-cooling radiator at positions between two adjacent thyristors.
A heating control system, comprising:
a power supply loop and a control loop;
the power supply loop comprises a heating core, a thyristor and a power line;
two output ends of the thyristor are respectively connected with the heating core and the power line, and a control end of the thyristor is connected to a control loop;
the control loop comprises a controller and a temperature switch, and the controller is connected with the control end of the thyristor through the temperature switch;
the thyristor and the temperature switch are respectively arranged on the outer side of the hollow water-cooled radiator, and the water-cooled radiator is used for radiating the thyristor through water flow flowing inside;
the input end of the water-cooled radiator is connected with a water source for supplying water to the water tank, the output end of the water-cooled radiator is communicated with a water inlet pipeline of the water tank through a tee joint, the other end of the tee joint is connected with a circulating electromagnetic valve, and the circulating electromagnetic valve is controlled to be closed or opened according to the on-state or off-state of the temperature switch;
the temperature switch is used for entering a conducting state or a switching-off state according to the temperature of the thyristor, so that the control signal in the control loop controls the power supply loop to supply power in the conducting state.
A heating control method specifically comprises the following steps:
detecting the on-off of a control loop;
when the temperature switch of the control loop is detected to be in an off state, a first control signal is generated, and the circulating electromagnetic valve is controlled to be opened, so that at least part of water flow is discharged by the circulating pipe after passing through the water-cooled radiator, and therefore heat dissipation is achieved.
Further, the method also comprises the following steps:
when the temperature switch of the control loop is detected to be in a conducting state, detecting the working state of the water inlet electromagnetic valve;
and if the water inlet electromagnetic valve is in an opening state, generating a second control signal and controlling the circulation electromagnetic valve to be closed.
The water inlet electromagnetic valve is an electromagnetic valve for heating the water tank and is used for controlling water inlet of the water tank according to a heating state, and the water inlet electromagnetic valve is not shown in figure 1.
The invention has the following beneficial effects:
1. the traditional aluminum-copper radiating fin is replaced by a water-cooling radiator, so that the product volume is reduced, and the utilization rate of an application space is effectively increased.
2. And a temperature switch is added, the temperature change of the thyristor is detected at any time, and the equipment is effectively controlled to operate at a safe temperature.
3. The water-cooled radiator can effectively realize the water path energy recovery function by absorbing the heat emitted by the thyristor, so that the water source entering the hot water tank can be preheated by the heat absorbed by the water-cooled radiator, and the energy recovery is realized.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a heating control system according to the present invention;
FIG. 3 is a first schematic diagram of the control loop of the circulation solenoid valve of the present invention;
FIG. 4 is a second structural diagram of a control loop of the solenoid valve of the present invention;
FIG. 5 is a schematic diagram of the circuit structure of the controller controlled circulation solenoid valve of the present invention;
FIG. 6 is a schematic diagram illustrating the linkage control of the temperature switch and the control signal according to the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
In addition, descriptions of well-known structures, functions, and configurations may be omitted for clarity and conciseness. Those of ordinary skill in the art will recognize that various changes and modifications of the examples described herein can be made without departing from the spirit and scope of the disclosure.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
Example 1
A heating control device comprising:
a power supply assembly and a control assembly;
the power supply assembly comprises a thyristor;
two output ends of the thyristor are respectively used for connecting the heating core and a power line, and a control end of the thyristor is connected to the control loop;
the control component comprises a temperature switch, one end of the temperature switch is connected with a control signal, and the other end of the temperature switch is connected with the control end of the thyristor;
the thyristor and the temperature switch are respectively arranged on the outer side of the hollow water-cooled radiator, and the water-cooled radiator is used for radiating the thyristor through water flow flowing inside;
the temperature switch is used for entering a conducting state or a switching-off state according to the temperature of the thyristor, so that the control signal controls the power supply loop to supply power in the conducting state.
It should be noted that, in the prior art, the turn-off of the thyristor for three-phase power is a conventional means, because the heat dissipating capacity of the thyristor in the circuit is large, for the safety of the circuit, a water flow cooling mode is introduced, and the heat dissipating efficiency is improved, however, the water flow in the water-cooling radiator needs a normal flow state, and the water flow of the water tank inlet pipe is in a clearance circulation or turn-off state, so that the thyristor is used in the turn-off of the water tank heater, and the problem of adaptation different from the thyristor in water flow states needs to be solved, therefore, a temperature switch and a circulation solenoid valve are added in the water tank heater, the temperature of the thyristor is detected through the temperature switch, and the implementation is realized: 1. the power supply loop supplies and stops power; 2. the circulation solenoid valve is opened and closed, so that the safety of the power supply loop is protected, and meanwhile, the circulation and the cut-off of water flow in the water-cooling radiator are controlled through the opening and the closing of the circulation solenoid valve, so that the temperature of the thyristor is controlled.
In this application, the control logic that the water tank was boiled water is prior art, and no longer gives unnecessary details here, and this application only solves the adaptation problem of thyristor temperature control and water tank water inlet state.
The temperature switch, the thyristor and the water-cooling radiator are tightly attached through the high-heat-conduction silica gel sheet, so that the heat conduction efficiency is increased, the water-cooling radiator is ensured to fully radiate heat, and the equipment can safely operate at normal temperature; through water flow cooling, the aluminum heat sink is used for replacing conventional large-volume aluminum and copper heat sinks, the size is reduced, and the aluminum heat sink is more convenient to install in a spatial layout.
The thyristors are cooled by water flow (the specific heat capacity of liquid water is 4.2 multiplied by 10^ 3j/(kg ^ C)), compared with the conventional aluminum and copper heat dissipation, the thyristors are more effective and stable, temperature switches are arranged between adjacent thyristors, the temperature change is monitored constantly, equipment is automatically disconnected in case of overtemperature, the equipment is enabled to enter a shutdown cooling state, the equipment is restarted to work when the temperature is recovered to a safe range, and the safe operation of the equipment is ensured.
When the temperature switch detects that the temperature is more than or equal to 80 ℃, the switch signal is automatically switched off, the work is stopped, and the normal work is started when the temperature is less than 60 ℃ so as to ensure the safe operation of the equipment.
A thyristor control circuit is adopted to replace a conventional contact circuit, so that the starting noise is reduced, and the service life is prolonged; zero-crossing triggering effectively solves the arc extinguishing problem.
The energy recovery is facilitated, the water-cooled radiator radiates heat through the absorption thyristor, so that the water source entering the hot water tank is preheated through the heat absorbed by the water-cooled radiator, and the energy recovery is realized.
Example 2
On the basis of embodiment 1, the power line is a three-phase power line, each phase of power line is connected to the heating core through a thyristor, one end of the temperature switch is connected to the control ends of the three thyristors, and the other end of the temperature switch is connected to a control signal.
Specifically, the thyristors are attached to the outer wall of the water-cooled radiator, and the two temperature switches are respectively installed at positions between two adjacent thyristors on the outer wall of the water-cooled radiator.
Specifically, be provided with the tee bend on the inlet tube, still be provided with the solenoid valve of intaking on the inlet tube, the drain valve of intaking is laid between tee bend and water tank, the tee bend still communicates with the circulating pipe, be provided with the circulation solenoid valve on the circulating pipe.
The water-cooling radiator is a columnar radiating pipe, and two ends of the columnar radiating pipe are in threaded connection with the water inlet pipe.
The thyristor and the temperature switch are attached to the outer wall of the water-cooling radiator through a high-heat-conductivity silica gel sheet;
preferably, the thyristors and the temperature switches are arranged on the outer wall of the water-cooling radiator at intervals along the water flow direction
It should be noted that when the thyristor is turned on, the power line supplies alternating current to the heating core, so that the heating core is electrified and heated;
when the thyristor is turned off, the power line stops supplying alternating current to the heating core, so that the heating core is powered off and stops heating.
Specifically, still include the tee bend, water-cooling radiator has input, output, tee bend A end and water-cooling radiator's output intercommunication, tee bend B end be used for with the inlet channel intercommunication of water tank, tee bend C end is the evacuation end, tee bend C end sets up the circulation solenoid valve, the circulation solenoid valve is opened or is closed according to temperature switch's state, water-cooling radiator's input is used for connecting the water source that the feed tank supplied water.
Specifically, still include the switch circuit module, switch circuit module electric connection circulation solenoid valve.
Specifically, the switch circuit module is controlled by a control signal and a temperature switch in a linkage mode, and when the temperature switch is in an off state and the control signal is at a high level, the circulating electromagnetic valve is opened.
Specifically, the switch circuit module comprises a triode Q2 and a switch unit, the triode Q2 and a control signal are linked to control the on-off of the switch unit, a collector of the triode Q2 is connected with the switch unit, an emitter of the triode Q2 is connected with a ground wire, and a base of the triode Q2 is connected between the temperature switch and the thyristor.
Specifically, the switch unit includes the bleeder circuit that control signal, resistance R1, resistance R2 are constituteed, still includes MOS pipe Q1, MOS pipe Q1's G level, triode Q2's collecting electrode all connect between resistance R1, resistance R2.
Specifically, the D stage of the MOS transistor Q1 is connected to a control signal through a coil of a relay, two ends of the coil are reversely connected in parallel with a diode, and the S stage of the MOS transistor Q1 is connected to the ground.
It should be noted that, the working state of the circulating electromagnetic valve is controlled by the temperature switch and the control signal in a linkage manner, and the base electrode of the triode Q2 and the thyristor are connected in parallel at one end of the temperature switch. When the temperature switch is in the off state, the control signal is 12V, and the circulation solenoid valve is in the on state, as shown in fig. 6, when the temperature switch is in the off state, the triode Q2 is turned off, and the MOS transistor Q1 is turned on under the effect of the 12V control signal, so that the circuit of the circulation solenoid valve is turned on, when the temperature switch is in the on state, the triode Q2 is turned on, the Vgs voltage of the MOS transistor Q1 is approximately equal to zero, and at this time, the MOS transistor Q1 is turned off, so that the circuit of the circulation solenoid valve is turned off.
In one embodiment, as an expanded solution, the base of the transistor Q2 is connected to the controller. It should be noted that, a control signal required by the base of the transistor Q2 may be output to a pin of the controller, and the base of the transistor Q2 and the thyristor are also connected in parallel to one end of the temperature switch, and the cut-off and the conduction of the transistor Q2 are controlled by the cut-off of the temperature switch, so that the cut-off and the conduction of the MOS transistor Q1 are driven by the cut-off and the conduction of the transistor Q2, thereby realizing the cut-off and the conduction of the circulation solenoid valve.
The controller needs to control the circulating solenoid valve and a high-power heating control circuit, and other high-power loads are driven by the driving relay.
According to the control principle, the circulating electromagnetic valve is opened only when the controller judges that the temperature switch is disconnected, according to the logic, the contact form of the relay should be normally opened, and as long as the relay is pulled in for power supply when needed, the connecting terminals are two ends of a coil of the relay.
To control the on and off of the circulating solenoid valve, the corresponding driving relay should only have two states of attraction and disconnection, so that the triode for driving the relay has two results of conduction and cut-off, and therefore, the controller plays a role of switching on and off the triode in the control circuit of the circulating solenoid valve.
The work of the circulating electromagnetic valve can be controlled only by connecting one of two voltage input lines of the circulating electromagnetic valve on a normally open contact of the relay, and as long as the relay can be normally attracted, the power supply can be added at the input end of the circulating electromagnetic valve, so that the circulating electromagnetic valve is driven to be conducted, and water is used for a water-cooling radiator to dissipate heat.
Signals are obtained through a water level electrode and a high-precision temperature sensor in the water tank, and the heating core and the circulating electromagnetic valve are controlled to work through accurate temperature control and water control calculation of a controller.
Preferably, the thyristor is a bidirectional thyristor.
Preferably, an electrical coupling is provided between the temperature switch and each thyristor, respectively.
In a heating control circuit, high-power three-phase power can generate strong electromagnetic interference in a control system, so that the interference on a single chip microcomputer is required to be reduced through photoelectric isolation, and in addition, the heating action is frequent, so that a control switch with better controllability is required to realize the connection and disconnection of the three-phase power.
The controller is through judging corresponding water level signal, then sends the heating control signal (this heating control signal is including stopping heating signal and opening heating signal, and this heating control signal can control switching on and ending of opto-coupler, and switching on and ending of opto-coupler has direct influence to the bidirectional thyristor, if the opto-coupler switches on, then the bidirectional thyristor switches on, otherwise, the same reason.
In the prior art, an 8051 singlechip is often selected as a controller, and the temperature is controlled by collecting a temperature signal through the singlechip, controlling on and off of a relay and controlling whether an electric heating tube is heated or not; the liquid level signal controls the opening and closing of the electromagnetic valve through detection processing so as to control the liquid level; on the other hand, the single chip microcomputer immediately controls the circuit breaker to cut off power supply of the main circuit by detecting the leakage signal, so that the protection effect is achieved. The working principle of the water boiler is as follows: when the water level signal is collected, the water level signal needs to be converted according to the collected signal type and converted into a level signal which can be directly input into the singlechip, and the level signal is used as the input quantity of the singlechip and can drive the operation of an internal program of the singlechip, so that the water supplementing and heating operations are controlled. The water level change in the water tank can be influenced by the water supplementing and heating actions, so that the water levels of cold water and hot water in the water tank need to be detected continuously, the change of the signal is fed back to a designed program in the single chip microcomputer in time, and the water supplementing and heating control is influenced continuously through the program.
The heating core is in a working state after 380V three-phase electricity is supplied, namely in a heating state, and the on-off control of 380V three-phase alternating current is the core of the whole heating control design. In daily life and production, a plurality of methods are used for controlling the on-off of alternating current, such as a relay, a high-power triode, a one-way thyristor CSR, a two-way thyristor TRIAC and the like. With the development of electronic control technology, the bidirectional thyristor becomes an ideal alternating current control switch, and the control of high power and high current is usually realized by the bidirectional thyristor at present. A TRIAC is a semiconductor power element, also known in the art as a TRIAC. The bidirectional thyristor and the unidirectional thyristor are different in that: once the unidirectional silicon controlled rectifier is conducted, the unidirectional silicon controlled rectifier cannot be cut off through an external signal, and the bidirectional silicon controlled rectifier can be conducted no matter the forward voltage or the reverse voltage, is a bidirectional element, has the turn-off characteristic of the bidirectional silicon controlled rectifier, is not troubled by the problem of reverse voltage resistance, and is simple in control circuit, so that the bidirectional silicon controlled rectifier is often used in an alternating current control circuit. The triac is usually connected to some high-power electrical appliances (such as 380V heating tube), and is a control hub between the high-power network and the high-power electrical appliances, and the triggering of the triac is usually a tiny gate signal. However, strong electromagnetic interference is often accompanied in controlling strong electric power, and thus, there are many demands for interference resistance of the triac trigger circuit. Especially in the single chip microcomputer control system, because the anti-interference capability of the single chip microcomputer is limited, a photoelectric isolator is generally used for electrically isolating the single chip microcomputer control system from a strong electric network. In addition, in order to reduce the driving power and the electromagnetic interference generated by the bidirectional triode thyristor during triggering, zero-crossing triggering is adopted for triggering the bidirectional triode thyristor in the alternating current control circuit. The three terminals of the bidirectional controllable silicon are respectively T1, T2 and G, no matter the voltage of the T1 and T2 terminals is positive or negative, as long as enough gate voltage exists, the two terminals are in a conducting state; conversely, when the gate voltage is withdrawn, the thyristor is cut off due to the application of the back voltage at the zero crossing point of the alternating current.
Example 3
A heating control method specifically comprises the following steps:
detecting the on-off of a control loop;
when the temperature switch of the control loop is detected to be in an off state, a first control signal is generated, and the circulating electromagnetic valve is controlled to be opened, so that at least part of water flow is discharged by the circulating pipe after passing through the water-cooled radiator, and therefore heat dissipation is achieved.
Specifically, the method further comprises the following steps:
when the temperature switch of the control loop is detected to be in a conducting state, detecting the working state of the water inlet electromagnetic valve;
and if the water inlet electromagnetic valve is in an opening state, generating a second control signal and controlling the circulation electromagnetic valve to be closed.
Example 4
A power supply loop and a control loop;
the power supply loop comprises a heating core, a thyristor and a power line;
two output ends of the thyristor are respectively connected with the heating core and the power line, and a control end of the thyristor is connected to a control loop;
the control loop comprises a controller and a temperature switch, and the controller is connected with the control end of the thyristor through the temperature switch;
the thyristor and the temperature switch are respectively arranged on the outer side of the hollow water-cooled radiator, and the water-cooled radiator is used for radiating the thyristor through water flow flowing inside;
the input end of the water-cooling radiator is connected with a water source for supplying water to the water tank, the output end of the water-cooling radiator is communicated with a water inlet pipeline of the water tank through a tee joint, the other end of the tee joint is connected with a circulating electromagnetic valve, and the circulating electromagnetic valve is controlled to be closed or opened according to the on-state or off-state of the temperature switch;
the temperature switch is used for entering a conducting state or a switching-off state according to the temperature of the thyristor, so that the control signal in the control loop controls the power supply loop to supply power in the conducting state.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications, equivalent arrangements, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A heating control device, comprising:
a power supply assembly and a control assembly;
the power supply assembly comprises a thyristor;
two output ends of the thyristor are respectively used for connecting the heating core and the power line, and a control end of the thyristor is connected to the control loop;
the control component comprises a temperature switch, one end of the temperature switch is connected with a control signal, and the other end of the temperature switch is connected with the control end of the thyristor;
the thyristor and the temperature switch are respectively arranged on the outer side of the hollow water-cooled radiator, and the water-cooled radiator is used for radiating the thyristor through water flow flowing inside;
the temperature switch is used for entering a conducting state or a switching-off state according to the temperature of the thyristor, so that the control signal controls the power supply loop to supply power in the conducting state.
2. The heating control device of claim 1, further comprising a tee joint, wherein the water-cooled radiator is provided with an input end and an output end, an A end of the tee joint is communicated with the output end of the water-cooled radiator, a B end of the tee joint is used for being communicated with a water inlet pipeline of the water tank, a C end of the tee joint is an emptying end, a C end of the tee joint is provided with a circulating electromagnetic valve, the circulating electromagnetic valve is opened or closed according to the state of the temperature switch, and the input end of the water-cooled radiator is used for being connected with a water source for supplying water to the water tank.
3. The heating control device of claim 2, further comprising a switching circuit module electrically connected to the circulation solenoid valve.
4. The heating control device as claimed in claim 3, wherein the switch circuit module is controlled by a control signal in linkage with the temperature switch, and when the temperature switch is in an off state and the control signal is at a high level, the circulation solenoid valve is opened.
5. The heating control device according to claim 4, wherein the switching circuit module comprises a transistor Q2 and a switching unit, the transistor Q2 and a control signal are linked to control the on/off of the switching unit, the collector of the transistor Q2 is connected to the switching unit, the emitter of the transistor Q2 is connected to the ground, and the base of the transistor Q2 is connected between the temperature switch and the thyristor.
6. The heating control device according to claim 4, wherein the switch unit comprises a voltage dividing circuit consisting of a control signal, a resistor R1 and a resistor R2, and further comprises a MOS transistor Q1, wherein the G stage of the MOS transistor Q1 and the collector of the triode Q2 are both connected between the resistor R1 and the resistor R2.
7. The heating control device according to claim 1, wherein the power line is a three-phase power line, each phase of power line is connected to the heating core through a thyristor, one end of the temperature switch is connected to the control ends of the three thyristors, and the other end of the temperature switch is connected to a control signal.
8. The heating control device as claimed in claim 7, wherein the thyristors are attached to the outer wall of the water-cooled heat sink, and two of the temperature switches are respectively installed at positions between two adjacent thyristors on the outer wall of the water-cooled heat sink.
9. A heating control method is characterized by comprising the following steps:
detecting the on-off of a control loop;
when the temperature switch of the control loop is detected to be in an off state, a first control signal is generated, and the circulating electromagnetic valve is controlled to be opened, so that at least part of water flow is discharged by the circulating pipe after passing through the water-cooled radiator, and therefore heat dissipation is achieved.
10. A heating control system, comprising:
a power supply loop and a control loop;
the power supply loop comprises a heating core, a thyristor and a power line;
two output ends of the thyristor are respectively connected with the heating core and the power line, and a control end of the thyristor is connected to a control loop;
the control loop comprises a controller and a temperature switch, and the controller is connected with the control end of the thyristor through the temperature switch;
the thyristor and the temperature switch are respectively arranged on the outer side of the hollow water-cooled radiator, and the water-cooled radiator is used for radiating the thyristor through water flow flowing inside;
the input end of the water-cooling radiator is connected with a water source for supplying water to the water tank, the output end of the water-cooling radiator is communicated with a water inlet pipeline of the water tank through a tee joint, the other end of the tee joint is connected with a circulating electromagnetic valve, and the circulating electromagnetic valve is controlled to be closed or opened according to the on-state or off-state of the temperature switch;
the temperature switch is used for entering a conducting state or a switching-off state according to the temperature of the thyristor, so that the control signal in the control loop controls the power supply loop to supply power in the conducting state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210948938.0A CN115342528A (en) | 2022-08-09 | 2022-08-09 | Heating control system, heating control method and control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210948938.0A CN115342528A (en) | 2022-08-09 | 2022-08-09 | Heating control system, heating control method and control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115342528A true CN115342528A (en) | 2022-11-15 |
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ID=83952364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210948938.0A Pending CN115342528A (en) | 2022-08-09 | 2022-08-09 | Heating control system, heating control method and control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115342528A (en) |
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2022
- 2022-08-09 CN CN202210948938.0A patent/CN115342528A/en active Pending
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