CN108870676B - Anti-tripping control method, device and system and air conditioner - Google Patents
Anti-tripping control method, device and system and air conditioner Download PDFInfo
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- CN108870676B CN108870676B CN201810478533.9A CN201810478533A CN108870676B CN 108870676 B CN108870676 B CN 108870676B CN 201810478533 A CN201810478533 A CN 201810478533A CN 108870676 B CN108870676 B CN 108870676B
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- air conditioner
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
Abstract
The invention discloses an anti-tripping control method, which comprises the following steps: acquiring the internal temperature of the air switch; and when the internal temperature of the air switch is higher than the preset temperature, sending a power reduction instruction to the air conditioner. The invention also discloses a control device and a system for preventing tripping and an air conditioner. The internal temperature of the air switch is used as a basis for preventing tripping, the air switch is prevented from tripping more accurately and reliably, the waste of household power is avoided, the overcurrent capacity of the air switch is utilized to the maximum extent, and the normal work of other household appliances in a main circuit is guaranteed.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an anti-tripping control method, an anti-tripping control device, an anti-tripping control system and an air conditioner.
Background
At present, the power supply in some countries and regions is very tight, the current consumption of each household is often limited, for example, after a certain country, the power consumption of the household cannot exceed 1200W, and each household is required to be equipped with an air switch for limitation, and when the current consumption exceeds 1200W, the air switch is switched off to control the household current to be switched on and off.
In such a home, home appliances having a power of more than 1200W are not generally used, but there is a possibility that a plurality of home appliances are simultaneously turned on, and when the air conditioner is turned on again, the air switch of the main circuit is easily released, and other home appliances cannot be normally used.
Disclosure of Invention
The invention mainly aims to provide an anti-tripping control method, an anti-tripping control device, an anti-tripping control system and an air conditioner, and aims to solve the technical problems that the total power of a family is too high after the air conditioner is started, so that an air switch in a main circuit is tripped, and other household appliances cannot be controlled.
In order to achieve the above object, the present invention provides an anti-trip control method, wherein the control method of an air conditioner comprises the following steps:
acquiring the internal temperature of the air switch;
and when the internal temperature of the air switch is higher than the preset temperature, sending a power reduction instruction to the air conditioner.
Preferably, the temperature of a connecting wire of the air switch is acquired;
and acquiring the internal temperature of the air switch according to the temperature of the connecting wire.
Preferably, the step of acquiring the internal temperature of the air switch according to the connection line temperature includes:
calculating the internal temperature of the air switch according to the temperature of the connecting wire, the resistance of the connecting wire and the resistance of the air switch;
or acquiring a preset corresponding relation table between the internal temperature of the air switch and the temperature of the connecting wire, and acquiring the internal temperature of the air switch according to the temperature of the connecting wire and the corresponding relation table.
Preferably, before the step of acquiring the temperature of the connection line of the air switch, the method further includes:
judging whether the current of a total circuit where the air switch is located is larger than a first preset current or not, wherein the first preset current is smaller than or equal to the rated current of the air switch;
and when the current of the total circuit is larger than a first preset current, executing the step of acquiring the temperature of the connecting wire of the air switch.
Preferably, before the step of sending the power reduction command to the air conditioner, the method further includes:
judging whether the internal temperature of the air switch is greater than a preset temperature or not;
when the internal temperature of the air switch is higher than a preset temperature, the step of sending a power reduction instruction to the air conditioner is executed, wherein the power reduction instruction is a shutdown instruction;
and when the internal temperature of the air switch is less than or equal to the preset temperature, sending a frequency reduction instruction to the air conditioner.
Preferably, the step of sending a down-conversion command to the air conditioner includes:
acquiring the running frequency of a compressor of the air conditioner, the current of a total circuit and the rated current of the air switch;
acquiring a target frequency according to the running frequency of the air conditioner compressor, the current of the main circuit and the rated current of the air switch;
and sending the frequency reduction instruction to the air conditioner according to the target frequency so as to reduce the frequency of a compressor of the air conditioner to the target frequency.
Preferably, after the step of determining whether the current of the total circuit is greater than the first preset current, the method further includes:
when the current of the total circuit is smaller than or equal to a first preset current, judging whether the current of the total circuit is smaller than a second preset current or not;
when the current of the total circuit is smaller than the second preset current, sending a normal operation instruction to the air conditioner, wherein the second preset current is smaller than the first preset current;
and when the current of the total circuit is greater than or equal to a second preset current, sending an instruction for keeping the current frequency to operate to the air conditioner.
In order to achieve the above object, the present invention provides an anti-trip control device, including: the system comprises a memory, a processor and a trip prevention control program which is stored on the memory and can run on the processor, wherein the trip prevention control program realizes the steps of the trip prevention control method when being executed by the processor.
In addition, in order to achieve the above object, the present invention provides a method for controlling an anti-trip device, the method for controlling an air conditioner including the steps of:
and when the air conditioner receives a power reduction command, reducing the frequency of a compressor of the air conditioner according to the power reduction command.
Preferably, the power-down command includes any one of a shutdown command and a frequency-down command, and the step of reducing the frequency of the compressor of the air conditioner according to the power-down command includes:
when the power reducing instruction is a shutdown instruction, controlling the air conditioner to close the compressor so as to reduce the frequency of the compressor;
and when the power reduction instruction is a frequency reduction instruction, acquiring a target frequency corresponding to the frequency reduction instruction, and controlling the air conditioner to reduce the frequency of the compressor to the target frequency.
Preferably, the anti-trip control method further includes:
when the air conditioner receives an instruction of keeping the current frequency running, controlling the air conditioner to keep the frequency of a compressor less than or equal to the current frequency;
and when the air conditioner receives a normal operation instruction, controlling the air conditioner to normally operate.
In addition, to achieve the above object, the present invention also provides an air conditioner, comprising: the system comprises a memory, a processor and a trip prevention control program which is stored on the memory and can run on the processor, wherein the trip prevention control program realizes the steps of the trip prevention control method when being executed by the processor.
In order to achieve the above object, the present invention further provides a trip prevention control system, wherein a trip prevention control program is stored in the trip prevention control system, and the trip prevention control program implements the steps of the trip prevention control method when executed by a processor.
According to the control method, the device and the system for preventing tripping and the air conditioner, which are provided by the embodiment of the invention, the controller acquires the internal temperature of the air switch, wherein the internal temperature of the air switch refers to the temperature of an actuating mechanism inside the air switch. The executing mechanism of the household air switch is in thermal tripping, the preset temperature is set, the preset temperature is smaller than or equal to the critical tripping temperature of the executing mechanism, whether the internal temperature of the air switch is larger than the preset temperature or not is judged, and the temperature is used as the judgment basis for preventing the air switch from tripping. When the internal temperature of the air switch is higher than the preset temperature, the fact that the actuating mechanism of the air switch is close to tripping can be indicated, in order to prevent the tripping of the air switch, a power reduction instruction is sent to the air conditioner, the electric quantity consumption of the air conditioner is reduced, the current in a main circuit is reduced, and then the tripping of the air switch is prevented. The internal temperature of the air switch is used as a basis for preventing tripping, the air switch is prevented from tripping more accurately and reliably, the waste of household power is avoided, the overcurrent capacity of the air switch is utilized to the maximum extent, and the normal work of other household appliances in a main circuit is guaranteed.
Drawings
Fig. 1 is a schematic terminal structure diagram of a hardware operating environment according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a trip prevention control method according to a first embodiment of the present invention;
fig. 3 is a schematic flow chart of a trip prevention control method according to a second embodiment of the present invention;
fig. 4 is a schematic flow chart of a trip prevention control method according to a third embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows:
acquiring the internal temperature of the air switch;
and when the internal temperature of the air switch is higher than the preset temperature, sending a power reduction instruction to the air conditioner.
Due to the fact that after the air conditioner is started in the prior art, when the total power of a family is too high, an air switch in a main circuit is tripped, and other household appliances cannot be used normally.
The invention provides a solution, wherein the internal temperature of the air switch acquired by the controller is the temperature of an actuating mechanism inside the air switch. The executing mechanism of the household air switch is in thermal tripping, the preset temperature is set, the preset temperature is smaller than or equal to the critical tripping temperature of the executing mechanism, whether the internal temperature of the air switch is larger than the preset temperature or not is judged, and the temperature is used as the judgment basis for preventing the air switch from tripping. When the internal temperature of the air switch is higher than the preset temperature, the fact that the actuating mechanism of the air switch is close to tripping can be indicated, in order to prevent the tripping of the air switch, a power reduction instruction is sent to the air conditioner, the electric quantity consumption of the air conditioner is reduced, the current in a main circuit is reduced, and then the tripping of the air switch is prevented. The internal temperature of the air switch is used as a basis for preventing tripping, the air switch is prevented from tripping more accurately and reliably, the waste of household power is avoided, the overcurrent capacity of the air switch is utilized to the maximum extent, and the normal work of other household appliances in a main circuit is guaranteed.
As shown in fig. 1, fig. 1 is a schematic terminal structure diagram of a hardware operating environment according to an embodiment of the present invention.
The terminal of the embodiment of the invention can be a controller, or a mobile terminal device with a transmitting and receiving function such as a PC, a smart phone, a tablet personal computer and the like, or an air conditioner with a built-in controller.
As shown in fig. 1, the terminal may include: a processor 1001, such as a CPU, a network interface 1004, a temperature sensor 1003, a memory 1005, a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The temperature sensor 1003 includes a bimetal thermometer, a glass liquid thermometer, a pressure type thermometer, a resistance thermometer, a thermistor, a thermocouple contact sensor, an infrared temperature sensor, an electromagnetic sensor, a thermal radiation sensor, and the like. The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
When the terminal is an independent controller, the controller is used for detecting information such as total current in a household main circuit, temperature of an air switch and the like, and sending a corresponding control instruction to the air conditioner according to a detection result.
Those skilled in the art will appreciate that the terminal structure shown in fig. 1 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include an operating system, a network communication module, a temperature detection module, and a trip prevention control program therein.
In the terminal shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the temperature sensor 1003 is mainly used for detecting the temperature of the air switch, including the shell temperature of the air switch and the temperature of a connecting wire; and the processor 1001 may be configured to call the trip prevention control program stored in the memory 1005, and perform the following operations:
acquiring the internal temperature of the air switch;
and when the internal temperature of the air switch is higher than the preset temperature, sending a power reduction instruction to the air conditioner.
Further, the processor 1001 may call the trip prevention control program stored in the memory 1005, and also perform the following operations:
acquiring the temperature of a connecting wire of the air switch;
and acquiring the internal temperature of the air switch according to the temperature of the connecting wire.
Further, the processor 1001 may call the trip prevention control program stored in the memory 1005, and also perform the following operations:
calculating the internal temperature of the air switch according to the temperature of the connecting wire, the resistance of the connecting wire and the resistance of the air switch;
or acquiring a preset corresponding relation table between the internal temperature of the air switch and the temperature of the connecting wire, and acquiring the internal temperature of the air switch according to the temperature of the connecting wire and the corresponding relation table.
Further, the processor 1001 may call the trip prevention control program stored in the memory 1005, and also perform the following operations:
judging whether the current of a total circuit where the air switch is located is larger than a first preset current or not, wherein the first preset current is smaller than or equal to the rated current of the air switch;
and when the current of the total circuit is larger than a first preset current, executing the step of acquiring the temperature of the connecting wire of the air switch.
Further, the processor 1001 may call the trip prevention control program stored in the memory 1005, and also perform the following operations:
judging whether the internal temperature of the air switch is greater than a preset temperature or not;
when the internal temperature of the air switch is higher than a preset temperature, the step of sending a power reduction instruction to the air conditioner is executed, wherein the power reduction instruction is a shutdown instruction;
and when the internal temperature of the air switch is less than or equal to the preset temperature, sending a frequency reduction instruction to the air conditioner.
Further, the processor 1001 may call the trip prevention control program stored in the memory 1005, and also perform the following operations:
acquiring the running frequency of a compressor of the air conditioner, the current of a total circuit and the rated current of the air switch;
acquiring a target frequency according to the running frequency of the air conditioner compressor, the current of the main circuit and the rated current of the air switch;
and sending the frequency reduction instruction to the air conditioner according to the target frequency so as to reduce the frequency of a compressor of the air conditioner to the target frequency.
Further, the processor 1001 may call the trip prevention control program stored in the memory 1005, and also perform the following operations:
when the current of the total circuit is smaller than or equal to a first preset current, judging whether the current of the total circuit is smaller than a second preset current or not;
when the current of the total circuit is smaller than the second preset current, sending a normal operation instruction to the air conditioner, wherein the second preset current is smaller than the first preset current;
and when the current of the total circuit is greater than or equal to a second preset current, sending an instruction for keeping the current frequency to operate to the air conditioner.
Further, the processor 1001 may call the trip prevention control program stored in the memory 1005, and also perform the following operations:
and when the air conditioner receives a power reduction command, reducing the frequency of a compressor of the air conditioner according to the power reduction command.
Further, the processor 1001 may call the trip prevention control program stored in the memory 1005, and also perform the following operations:
when the power reducing instruction is a shutdown instruction, controlling the air conditioner to close the compressor so as to reduce the frequency of the compressor;
and when the power reduction instruction is a frequency reduction instruction, acquiring a target frequency corresponding to the frequency reduction instruction, and controlling the air conditioner to reduce the frequency of the compressor to the target frequency.
Further, the processor 1001 may call the trip prevention control program stored in the memory 1005, and also perform the following operations:
when the air conditioner receives an instruction of keeping the current frequency running, controlling the air conditioner to keep the frequency of a compressor less than or equal to the current frequency;
and when the air conditioner receives a normal operation instruction, controlling the air conditioner to normally operate.
Referring to fig. 2, a first embodiment of a trip prevention control method according to the present invention includes:
in step S10, the internal temperature of the air switch is acquired.
The air switch is divided into a thermal trip and a magnetic trip, in order to control the current passing through the air switch to be slightly higher than the rated current of the air switch, an executing mechanism in the air switch is controlled to trip, and when the circuit where the air switch is located is disconnected, the thermal trip is adopted; in order to control the tripping of an internal actuating mechanism of the air switch when the current passing through the air switch is several times higher than the rated current of the air switch and break a circuit where the air switch is located, magnetic tripping is adopted. The full utilization of household power is concentrated in a region slightly higher than the rated current of the air switch, and therefore, the air switch of the thermal trip actuator is adopted.
Because the thermal tripping actuating mechanism of the air switch in the household main circuit is packaged in the shell of the air switch, when the household appliance works normally, the shell of the air switch cannot be opened, and the temperature of the thermal tripping actuating mechanism is directly detected. The controller cannot accurately detect the temperature of the thermal trip actuator, i.e., the internal temperature of the air switch, and thus the internal temperature of the air switch is calculated by detecting the ambient temperature of the air switch.
Generally, the internal temperature of the air switch can be detected through detecting the temperature of a connecting wire connected with the air switch, and the internal temperature of the air switch is obtained according to the temperature of the connecting wire; or detecting the shell temperature of the air switch, and calculating the internal temperature of the air switch according to the shell temperature of the air switch; alternatively, the present current through the overall circuit is obtained, and the internal temperature of the air switch is obtained from the current.
Specifically, the method for acquiring the internal temperature of the air switch through the temperature of the connecting wire is used for calculating the internal temperature of the air switch by acquiring the temperature of the connecting wire, the resistance of the connecting wire and the resistance of the air switch; the air switch can be tested in advance, a corresponding relation table of the connecting line temperature and the internal temperature of the air switch is established after a plurality of tests, and the internal temperature of the current air switch can be obtained according to the detected current connecting line temperature according to the corresponding relation table; the internal temperature of the air switch may also be obtained in other ways.
And step S20, when the internal temperature of the air switch is higher than the preset temperature, sending a power reduction command to the air conditioner.
According to the characteristics of the air switch, for the thermal tripping air switch, when the internal temperature of the air switch exceeds the tripping critical temperature of the actuating mechanism of the air switch, the air switch is tripped, the circuit where the air switch is located is disconnected, the household appliances in the circuit where the air switch is located are all powered off, and the air switch cannot be used continuously. Therefore, a preset temperature is set, the preset temperature is smaller than or equal to the tripping critical temperature of the actuating mechanism of the air switch, and when the obtained internal temperature of the air switch is larger than the preset temperature, the controller sends a power reduction command to the air conditioner to reduce the current of the main circuit, so that the internal temperature of the air switch is reduced, the actuating mechanism of the air switch is prevented from tripping, and the normal work of other household appliances in the main circuit is prevented from being influenced. The power reduction command can be a shutdown command to control the air conditioner to shut down, so that the aims of reducing the current in a main circuit and preventing an air switch from tripping are fulfilled; the frequency reduction instruction can also be used for reducing the running frequency of a compressor of the air conditioner, so that the aim of reducing the current in a main circuit and preventing an air switch from tripping is fulfilled.
The processor of the controller is in communication connection with the air conditioner to control the air conditioner. The air switch is connected with the controller in the household electric environment, and the controller is connected with the air conditioner. The controller controls the operation of the air conditioner by checking the total current and temperature at the air switch. The controller is connected with the air conditioner in a communication mode, and the communication connection comprises one-way communication or two-way communication.
In one embodiment of the present invention, in the communication between the controller and the air conditioner, in order to reduce the power consumption of the controller, the number of times of communication between the controller and the air conditioner may be reduced. Sending a control command to the air conditioner by the controller, wherein the control command can be: a shutdown instruction, a frequency reduction instruction, a normal operation instruction, or a control instruction for maintaining the current operation frequency. Before the control command of the example is sent once or before the control command is sent next time, judgment is made to judge whether the control command needs to be sent again. For example, when the control command sent each time is the same, the same control command is not repeatedly sent to the air conditioner.
Specifically, controlling the number of times of communication between the controller and the air conditioner includes:
taking bidirectional communication between the controller and the air conditioner as an example, the specific communication method is as follows:
and when the controller judges that the current state of the air switch meets the condition of sending a shutdown instruction to the air conditioner, communicating with the air conditioner according to a preset communication period T.
When the controller judges that the current state of the air switch meets the state except for sending a shutdown instruction to the air conditioner, sending a corresponding control instruction to the air conditioner, and then not sending the control instruction if the following two conditions are met simultaneously:
1. the command returned by the air conditioner confirms that the control command sent by the controller is received.
2. The control instruction to be sent by the controller is the same as the last time.
When any of the above conditions is not satisfied, communication is performed in a predetermined communication cycle T, and thereafter the above steps are repeated.
In addition, the tripping critical temperature of the actuating mechanism can be obtained by calculation according to the characteristics of the bimetallic strip of the actuating mechanism, the tripping force and the zero setting stroke, further, the temperature rise of the tripping force can be influenced by the zero setting stroke, and manufacturers of all air switches can set the zero setting stroke to calibrate the performance of the air switches in order to meet national standard requirements, so that the influence of the zero setting stroke needs to be considered when the temperature is used as the basis for judging whether the air switches are tripped or not, and when the tripping critical temperature of the actuating mechanism is calculated, a reserved temperature constant is added to be used as correction for the zero setting stroke, so that whether the air switches are about to be tripped or not can be judged more accurately.
Some inevitable errors are introduced by conventionally calculating whether the air switch is about to trip through indirect quantities of current and time. And when the judgment of the tripping of the air switch is lost, the power of the air conditioner is not reduced in time, when the current in the main circuit is reduced, the air switch is tripped and the circuit is disconnected, and at the moment, the overcurrent capacity of the part of the main current higher than the rated value is not fully utilized according to the characteristics of the air switch, so that the waste of household power is caused. The invention directly adopts the internal temperature of the air switch as the basis for preventing tripping, omits the errors caused by current judgment and time calculation, more accurately and reliably prevents the air switch from tripping, avoids the waste of household power, and furthest utilizes the overcurrent capacity of the air switch.
In this embodiment, the controller obtains the internal temperature of the air switch, which is the temperature of the actuator inside the air switch. The executing mechanism of the household air switch is in thermal tripping, the preset temperature is set, the preset temperature is smaller than or equal to the critical tripping temperature of the executing mechanism, whether the internal temperature of the air switch is larger than the preset temperature or not is judged, and the temperature is used as the judgment basis for preventing the air switch from tripping. When the internal temperature of the air switch is higher than the preset temperature, the fact that the actuating mechanism of the air switch is close to tripping can be indicated, in order to prevent the tripping of the air switch, a power reduction instruction is sent to the air conditioner, the electric quantity consumption of the air conditioner is reduced, the current in a main circuit is reduced, and then the tripping of the air switch is prevented. The internal temperature of the air switch is used as a basis for preventing tripping, the air switch is prevented from tripping more accurately and reliably, the waste of household power is avoided, the overcurrent capacity of the air switch is utilized to the maximum extent, and the normal work of other household appliances in a main circuit is guaranteed.
Further, referring to fig. 3, a second embodiment of the trip preventing control method according to the present invention is based on the first embodiment, before the step S20, further including:
step S30, determining whether the current of the total circuit where the air switch is located is greater than a first preset current.
When the current of the total circuit is greater than the first preset current, step S10 is performed, i.e., the internal temperature of the air switch is acquired.
In this embodiment, the value of the first preset current is smaller than or equal to the rated current value of the air switch. As can be seen from the above embodiment, the thermal trip air switch has the characteristic that when the current flowing through the air switch is slightly higher than the rated current of the air switch, and the temperature of the actuator inside the air switch reaches the critical trip temperature, the air switch trips, and the circuit where the air switch is located is disconnected. Before the internal temperature of the air switch is obtained, whether the current of the main circuit is greater than a first preset current is judged, and when the current of the main circuit is greater than the first preset current, the current of the main circuit is close to or reaches the rated current of the air switch, and at the moment, the internal temperature of the air switch needs to be obtained; when the current of the total circuit is less than or equal to the first preset current, it can be shown that the current of the total circuit does not reach the rated current of the air switch, and the current temperature of the actuating mechanism of the air switch is a certain distance away from the critical tripping temperature, so that the internal temperature of the air switch does not need to be acquired to control the operating power of the air conditioner, and the control operation steps of tripping prevention are reduced.
Further, when the current of the total circuit is less than or equal to the first preset current, whether the current of the total circuit is less than a second preset current is judged, wherein the second preset current is less than the first preset current. When the current in the main circuit is smaller than the second preset current, the current value in the current main current is lower, a larger difference value exists between the current value and the current value required by tripping of the actuating mechanism of the air switch, and the air switch cannot be tripped generally when the air conditioner operates according to the operation program of the air conditioner, so that a normal operation instruction is sent to the air conditioner at the moment to control the normal operation of the air conditioner and guarantee the air conditioning effect of the air conditioner. When the current in the main circuit is larger than or equal to the second preset current, although the air switch cannot be tripped in a short time, the current occupation amount of the air conditioner should be properly controlled at the moment, and the phenomenon that the air switch is tripped due to the fact that the current in the main circuit is too large because the frequency of the compressor is too high when the air conditioner normally operates is avoided. Generally, the value of the second preset current is 50% -90% of the first preset current, but is not limited to this value range, and the specific value of the second preset current should also consider the performance of the air conditioner corresponding to a specific controller, on one hand, the value of the second preset current is as large as possible, so that the air conditioner can normally operate when the current in the total circuit is smaller than the second preset current, and the air conditioner is ensured to be in the normal operation state as much as possible; on the other hand, the second preset current is guaranteed to be reasonable in value, the situation that the current in the main circuit exceeds the rated current of the air switch due to the fact that the current is kept running at the current frequency is avoided, and the risk of tripping of the air switch is increased.
In addition, the controller monitors the current of the main circuit immediately in real time after being electrified, and sends a corresponding control instruction to the air conditioner according to the current condition of the main circuit and the temperature condition of the air switch so as to control the air conditioner to operate according to the control instruction, thereby preventing the air switch from tripping, causing circuit disconnection and other household appliances from working normally. It should be noted that the air conditioner receives the control instruction sent by the air conditioner after being powered on, and the control instruction sent later covers the previous control instruction, so the control instruction received by the air conditioner is the control instruction sent by the controller last after the air conditioner is powered on.
In the present embodiment, it is first determined which condition the current of the overall circuit satisfies before acquiring the internal temperature of the air switch. When the current of the total circuit is greater than the first preset current, the current of the total circuit is close to or reaches the rated current of the air switch, and the step S10 is executed to prevent the air switch from tripping; when the current of the total circuit is smaller than the first preset current, whether the current of the total circuit is smaller than the second preset current is judged. When the current of the total circuit is smaller than a second preset current, the current value in the current total current is lower, a larger difference value exists between the current value and the current value required by tripping of an actuating mechanism of the air switch, the air switch cannot be tripped usually when the air conditioner operates according to the operation program of the air conditioner, and a normal operation instruction is sent to the air conditioner to control the normal operation of the air conditioner and guarantee the air conditioning function of the air conditioner; when the current in the main circuit is less than or equal to the first preset current and greater than or equal to the second preset current, the current occupancy of the air conditioner is properly controlled, the phenomenon that the current in the main circuit is too large due to the fact that the frequency of a compressor is too high when the air conditioner normally operates, and an air switch is tripped is avoided, and then an instruction for keeping the current frequency to operate is sent to the air conditioner, so that the frequency of the compressor of the air conditioner is kept to be less than or equal to the current operating frequency to operate. Different control instructions are sent to the air conditioner according to the current magnitude of the current of the main circuit, so that the air conditioning capacity of the air conditioner is guaranteed while the air switch is prevented from tripping, and the working efficiency of the air conditioner is improved.
Further, referring to fig. 4, a third embodiment of the trip preventing control method according to the present invention is based on the first or second embodiment, before the step S20, further including:
and step S40, judging whether the internal temperature of the air switch is greater than the preset temperature.
And step S50, when the internal temperature of the air switch is less than or equal to the preset temperature, sending a frequency reduction instruction to the air conditioner.
And when the internal temperature of the air switch is greater than the preset temperature, executing the step S20, and sending a power reduction command to the air conditioner.
And judging whether the internal temperature of the air switch is greater than a preset temperature or not before sending a power reduction command to the air conditioner. When the internal temperature of the air switch is higher than the preset temperature, a power reduction instruction is sent to the air conditioner to reduce the current of the main circuit, so that the internal temperature of the air switch is reduced, and the executing mechanism of the air switch is prevented from tripping to influence the normal work of other household appliances in the main circuit; when the internal temperature of the air switch is less than or equal to the preset temperature, although the current air switch cannot be tripped immediately, in order to avoid tripping the air switch in a short time, a frequency reduction instruction is sent to the air conditioner, the frequency of the air conditioner is controlled to be reduced, the running frequency of a compressor of the air conditioner is reduced, the current in a main circuit is reduced, and the air switch is prevented from tripping.
In addition, when the internal temperature of the air switch is higher than the preset temperature, the internal temperature of the air switch is close to the tripping critical temperature, and in order to avoid tripping of the air switch, a power reduction command is sent to the air conditioner at the moment to be a shutdown command, the air conditioner is controlled to be shut down immediately, so that the current in a main circuit is quickly reduced, and tripping of the air switch is effectively prevented.
Further, the step of sending a frequency reduction instruction to the air conditioner comprises:
the method comprises the steps of obtaining the running frequency of a compressor of the air conditioner, the current of a main circuit and the rated current of an air switch, obtaining a target frequency according to the running frequency of the compressor of the air conditioner, the current of the main circuit and the rated current of the air switch, and sending a frequency reduction instruction to the air conditioner according to the target frequency so as to reduce the running frequency of the compressor of the air conditioner to the target frequency, so that the current in the main circuit is reduced, and the air switch is prevented from tripping.
In addition, in another modified embodiment, the internal temperature of the air switch is firstly acquired, whether the internal temperature of the air switch is greater than the preset temperature or not is judged, and when the internal temperature of the air switch is greater than the preset temperature, a power reduction instruction is directly sent to the air conditioner; when the internal temperature of the air switch is lower than or equal to the preset temperature, acquiring the current in the main circuit, and when the current is higher than the first preset current, sending a frequency reduction instruction to the air conditioner; and when the current is less than or equal to the first preset current, sending a normal operation instruction or an instruction for keeping the current frequency to operate to the air conditioner. The operation of obtaining and judging the current in the main circuit is placed after the judgment of whether the internal temperature of the air switch is higher than the preset temperature or not, the operation of obtaining the current is reduced, and the control flow of preventing tripping is simplified.
In this embodiment, it is determined whether the internal temperature of the air switch is greater than a preset temperature before the power-down command is transmitted to the air conditioner. When the internal temperature of the air switch is higher than the preset temperature, a power reduction instruction is sent to the air conditioner to reduce the current of the main circuit, so that the internal temperature of the air switch is reduced, and the executing mechanism of the air switch is prevented from tripping to influence the normal work of other household appliances in the main circuit; when the internal temperature of the air switch is less than or equal to the preset temperature, although the current air switch cannot be tripped immediately, in order to avoid tripping the air switch in a short time, a frequency reduction instruction is sent to the air conditioner, the frequency of the air conditioner is controlled to be reduced, the running frequency of a compressor of the air conditioner is reduced, the current in a main circuit is reduced, and the air switch is prevented from tripping. Different control instructions are sent to the air conditioner through the internal temperature of the air switch so as to maintain the air conditioning function of the air conditioner and improve the operating efficiency of the air conditioner.
Further, in a fourth embodiment of the trip prevention control method according to the present invention, based on any one of the first to third embodiments, the trip prevention control method further includes:
and when the air conditioner receives a power reduction command, reducing the frequency of a compressor of the air conditioner according to the power reduction command.
The air conditioner receives a control instruction sent by the controller in the operation process, and when the air conditioner receives a power reduction instruction, the frequency of a compressor of the air conditioner is reduced according to the power reduction instruction.
Wherein, the power instruction comprises any one of a shutdown instruction and a frequency reduction instruction. When a power reduction instruction is received, judging which instruction the power reduction instruction is specific, and when the power reduction instruction is a shutdown instruction, controlling the air conditioner to shut down so as to quickly reduce the current in a main circuit and prevent an air switch from tripping; when the power reduction instruction is a frequency reduction instruction, the target frequency corresponding to the frequency reduction instruction is obtained, and the air conditioner is controlled to reduce the operating frequency to the target frequency so as to reduce the operating frequency of a compressor of the air conditioner and achieve the purpose of reducing the current in a main circuit and preventing the air switch from tripping. In addition, when a shutdown instruction is received, a compressor or an outdoor unit of the air conditioner is closed, low-power components such as an indoor fan and the like are kept running, and a certain air conditioning effect of the air conditioner is maintained as much as possible.
In addition, when an instruction of keeping the current frequency running sent by the controller is received in the running process of the air conditioner, the air conditioner is controlled to keep the frequency of the compressor less than or equal to the current frequency so as to ensure that the current in the current main circuit is maintained in the current state and avoid tripping of the air switch when the current is higher than the rated current of the air switch by a certain value; when the air conditioner receives a normal operation instruction, the current in the current main circuit is far lower than the rated current of the air switch, the air conditioner is controlled to normally operate, and the air conditioning effect of the air conditioner is guaranteed.
Further, when the air conditioner receives the starting signal, the control instruction sent by the controller starts to be received. The air switch is prevented from tripping due to overlarge current in a main circuit after the air conditioner is started. After the air conditioner receives a starting signal and receives a control instruction sent by the controller, judging whether the control instruction is a normal operation instruction or not, and controlling the air conditioner to be started and normally operate when the control instruction is the normal operation instruction; and when the control instruction is a shutdown instruction, a frequency reduction instruction or an instruction for keeping the current frequency to operate and is not a normal operation instruction, the air conditioner is not started. In addition, when the air conditioner is not started, prompt information is sent out to remind a user.
It is easy to think that, when the air conditioner receives the shutdown instruction, the air conditioner shuts down the compressor, when the air conditioner receives the shutdown instruction of the remote controller, the air conditioner shuts down; when a shutdown instruction of the remote controller is not received, the current in the main circuit is reduced to a certain value, and a normal operation instruction sent by the controller is received, the air conditioner is started and operates normally.
In this embodiment, when the air conditioner receives a power reduction command sent by the controller, the frequency of the compressor of the air conditioner is reduced according to the power reduction command. The air conditioner has the advantages that the current in the main circuit is reduced by shutting down or reducing the running frequency of the compressor of the air conditioner, the air switch is prevented from tripping, and the main circuit is prevented from being disconnected, so that other household appliances in the main circuit cannot work normally.
In addition, an embodiment of the present invention further provides a trip prevention control device, where the trip prevention control device includes: the trip prevention control method comprises a memory, a processor and a trip prevention control program stored on the memory and capable of running on the processor, wherein the trip prevention control program realizes the steps of the trip prevention control method according to the first to third embodiments when being executed by the processor.
In addition, an embodiment of the present invention further provides an air conditioner, including: the present invention relates to a trip prevention control method, and more particularly, to a trip prevention control method for a vehicle, which includes a memory, a processor, and a trip prevention control program stored in the memory and executable on the processor, wherein the trip prevention control program implements the steps of the trip prevention control method according to the fourth embodiment when executed by the processor.
In addition, an embodiment of the present invention further provides an anti-trip control system, where an anti-trip control program is stored in the anti-trip control system, and the anti-trip control program, when executed by the processor, implements the steps of the anti-trip control method according to the above embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium as described above and includes several instructions for causing a terminal device to execute the methods according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The anti-tripping control method is characterized by comprising the following steps:
when the current of a total circuit where an air switch is located is larger than the rated current of the air switch, the internal temperature of the air switch is obtained, and the air switch is a thermal tripping air switch;
when the internal temperature of the air switch is higher than the preset temperature, sending a power reduction instruction to the air conditioner; the preset temperature is lower than the tripping critical temperature of the actuating mechanism of the air switch;
wherein the step of acquiring the internal temperature of the air switch comprises:
and calculating the internal temperature of the air switch according to the temperature of the connecting wire of the air switch, the resistance of the connecting wire and the resistance of the air switch.
2. The trip preventing control method according to claim 1, wherein before the step of sending the power-down command to the air conditioner, the method further comprises:
judging whether the internal temperature of the air switch is greater than a preset temperature or not;
when the internal temperature of the air switch is higher than a preset temperature, the step of sending a power reduction instruction to the air conditioner is executed, wherein the power reduction instruction is a shutdown instruction;
and when the internal temperature of the air switch is less than or equal to the preset temperature, sending a frequency reduction instruction to the air conditioner.
3. The trip preventing control method according to claim 2, wherein the step of sending a down-conversion command to the air conditioner includes:
acquiring the running frequency of a compressor of the air conditioner, the current of a total circuit and the rated current of the air switch;
acquiring a target frequency according to the running frequency of the air conditioner compressor, the current of the main circuit and the rated current of the air switch;
and sending the frequency reduction instruction to the air conditioner according to the target frequency so as to reduce the frequency of a compressor of the air conditioner to the target frequency.
4. The trip preventing control method of any one of claims 1 to 3, wherein the control method of the air conditioner further comprises the steps of:
when the current of the total circuit is smaller than or equal to a first preset current, judging whether the current of the total circuit is smaller than a second preset current or not;
when the current of the total circuit is smaller than the second preset current, sending a normal operation instruction to the air conditioner, wherein the second preset current is smaller than the first preset current;
and when the current of the total circuit is greater than or equal to a second preset current, sending an instruction for keeping the current frequency to operate to the air conditioner.
5. The anti-tripping control method is characterized by comprising the following steps:
when the air conditioner receives a power reduction command, reducing the frequency of a compressor of the air conditioner according to the power reduction command;
the power reduction instruction is sent when the current of a total circuit where the air switch is located is larger than the rated current of the air switch and the internal temperature of the air switch is larger than the preset temperature;
the air switch is a thermal tripping air switch, and the preset temperature is lower than the tripping critical temperature of an actuating mechanism of the air switch; the internal temperature is calculated through the temperature of a connecting wire of the air switch, the resistance of the connecting wire and the resistance of the air switch.
6. The trip prevention control method of claim 5, wherein the power-down command comprises any one of a shutdown command and a frequency-down command, and the step of reducing the frequency of the compressor of the air conditioner according to the power-down command comprises:
when the power reducing instruction is a shutdown instruction, controlling the air conditioner to close the compressor so as to reduce the frequency of the compressor;
and when the power reduction instruction is a frequency reduction instruction, acquiring a target frequency corresponding to the frequency reduction instruction, and controlling the air conditioner to reduce the frequency of the compressor to the target frequency.
7. The trip preventing control method of claim 6, further comprising:
when the air conditioner receives an instruction of keeping the current frequency running, controlling the air conditioner to keep the frequency of a compressor less than or equal to the current frequency;
and when the air conditioner receives a normal operation instruction, controlling the air conditioner to normally operate.
8. An anti-tripping control device, characterized in that the anti-tripping control device comprises: a memory, a processor and a control program of an air conditioner stored on the memory and operable on the processor, the anti-trip control program, when executed by the processor, implementing the steps of the anti-trip control method according to any one of claims 1 to 4.
9. An air conditioner, characterized in that the air conditioner comprises: memory, a processor and an anti-trip control program stored on the memory and executable on the processor, the anti-trip control program, when executed by the processor, implementing the steps of the anti-trip control method according to any one of claims 5 to 7.
10. An anti-tripping control system, characterized in that the anti-tripping control system stores an anti-tripping control program, and the anti-tripping control program is executed by a processor to realize the steps of the anti-tripping control method according to any one of claims 1 to 7.
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| CN110518611B (en) * | 2019-08-30 | 2020-11-06 | 珠海格力电器股份有限公司 | Charging and discharging autonomous control method and device of energy storage module and energy storage equipment |
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