CN108844193B - Method and device for adjusting unit operation parameters and unit - Google Patents
Method and device for adjusting unit operation parameters and unit Download PDFInfo
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- CN108844193B CN108844193B CN201810570898.4A CN201810570898A CN108844193B CN 108844193 B CN108844193 B CN 108844193B CN 201810570898 A CN201810570898 A CN 201810570898A CN 108844193 B CN108844193 B CN 108844193B
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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 a method and a device for adjusting unit operation parameters and a unit. Wherein, the method comprises the following steps: judging whether the current running state of the unit reaches a preset state or not; the preset state is a state for triggering a fault protection mode; and when the running state reaches a preset state, adjusting the running parameters of the unit. By the method and the device, when the unit reaches the state of triggering the fault protection mode, the running parameters of the unit are adjusted, so that the unit is prevented from frequently triggering the fault protection mode in the future use, the use experience of a user is improved, and the complaint of the user is reduced.
Description
Technical Field
The invention relates to the technical field of units, in particular to a method, a device and a unit for adjusting unit operation parameters.
Background
At present, the variable frequency air conditioner is gradually popularized, and a plurality of benefits such as energy conservation, comfort and the like are brought to users. However, the control system of the air conditioner is complex, and many protection modes are often required to be set in order to ensure the reliability of the air conditioning unit. The protection types relate both to the system side and to the controller side. Such as fluorine-deficient system protection, compressor discharge temperature protection, dc fan protection, IPM (Intelligent Power Module) temperature protection, etc.
All protection modes are executed according to set conditions, and the operation parameters are fixed when the protection device is delivered from a factory. Even if a lot of experimental verifications are carried out during in-plant tests, the operation environment of the air conditioner is complicated and changeable outside the plant, and the difference from ideal experimental conditions is large. Therefore, when the system operates according to the factory-set operating parameters, certain types of fault protection can be frequently triggered under certain specific conditions, and finally, a user can report a complaint, which is very easy to cause the loss of a client.
Aiming at the problem that fault protection is frequently triggered under certain conditions in the prior art, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a method, a device and a unit for adjusting unit operation parameters, and aims to solve the problem that fault protection is frequently triggered under certain conditions in the prior art.
In order to solve the above technical problem, in a first aspect, the present invention provides a method for adjusting an operation parameter of a unit, where the method includes:
judging whether the current running state of the unit reaches a preset state or not; wherein the preset state is a state that triggers a failsafe mode;
and when the running state reaches the preset state, adjusting the running parameters of the unit.
Further, judging whether the current running state of the unit reaches a preset state or not comprises the following steps: monitoring the current working parameters of the unit; judging whether the working parameters meet preset conditions or not; the preset condition is that the difference value between the working parameter and a preset fault value is in a preset range; and if so, determining that the unit reaches the preset state.
Further, the operating parameters include at least one of: system pressure of the unit, compressor discharge temperature of the unit, and intelligent power module IPM temperature.
Further, when the operating parameter is the system pressure or the compressor discharge temperature, adjusting an operating parameter of the unit includes: down-regulating an operating frequency of the compressor by F; after a preset time interval, if the system pressure is still greater than a preset system pressure fault value-a first preset difference value, or the compressor exhaust temperature is greater than a preset exhaust temperature fault value-a second preset difference value, accelerating the adjustment speed by delta v and increasing the adjustment amplitude by delta F; when the adjusting times are N times, adjusting the speed to be V + (N-1) delta V and the adjusting amplitude to be F + (N-1) delta F until the unit is in a stable state; wherein V is the initial adjustment speed, F is the initial adjustment amplitude, Δ V is the variation of each adjustment speed, and Δ F is the variation of each adjustment amplitude.
Further, when the operating parameter is IPM temperature, adjusting an operating parameter of the unit includes: down-regulating the running frequency of the compressor by F; after the interval of the preset time, if the IPM temperature is still larger than the IPM temperature preset fault value-a third preset difference value, the adjusting speed of the running frequency of the compressor is increased by delta v, and the adjusting amplitude is increased by delta F; increasing the rotating speed of the fan by delta R; when the adjusting times are N times, the adjusting speed is V + (N-1) delta V, and the adjusting amplitude is F + (N-1) delta F; the rotating speed of the fan is R + (N-1) delta R until the unit is in a stable state; wherein, V is the initial adjustment speed, F is the initial adjustment range, and Δ V is the change of adjustment speed each time, and Δ F is the change of adjustment range each time, and R is the initial fan rotational speed, and Δ R is the change of adjustment rotational speed each time.
Further, judging whether the current running state of the unit reaches a preset state or not comprises the following steps: determining a current operation mode of the unit; judging whether the current operation mode is in a fault protection mode; and if so, determining that the unit reaches the preset state.
Further, the current operation mode is a fan fault protection mode or a communication recovery rate fault protection mode.
Further, when the current operation mode is the fan fault protection mode, adjusting the operation parameters of the unit includes: and (3) regulating the rotating speed of the fan by delta R, and when the regulating frequency is N times, regulating the rotating speed of the fan to be R + (N-1) delta R until the fan is in a stable state.
Further, when the current operation mode is the communication recovery rate fault protection mode, adjusting the operation parameters of the unit includes: when the communication reply rate of the unit is lower than the preset communication reply rate, adjusting the communication baud rate, and monitoring the change condition of the communication reply rate in real time; and if the communication reply rate is reduced, adjusting the communication baud rate in the opposite direction until the communication reply rate is greater than or equal to the preset communication reply rate.
Further, after adjusting the operating parameters of the plant, the method further comprises: when the operation parameters of the unit reach critical values, stopping adjustment; wherein the operating parameters include at least one of: the compressor running frequency, the fan rotating speed and the communication baud rate.
Further, after adjusting the operating parameters of the plant, the method further comprises: if the unit is in a stable state in multiple running before power failure; and storing the adjusted operating parameters so that the unit can be started according to the adjusted operating parameters after the power failure restart.
Further, after adjusting the operating parameters of the plant, the method further comprises: and if the unit is still in the preset state in multiple operations before power failure, prompting a user to maintain and/or reporting the fault type to a manufacturer through GPRS or WIFI.
Further, after adjusting the operating parameters of the plant, the method further comprises: if the performance parameters of the unit do not reach the preset performance parameters, prompting a user to maintain and/or reporting the fault type to a manufacturer through GPRS or WIFI; the performance parameters comprise the air outlet temperature of the unit or the time required for reaching the preset air outlet temperature.
In a second aspect, the present invention provides an apparatus for adjusting an operating parameter of a plant, the apparatus being configured to perform the method of the first aspect, the apparatus comprising:
the judging module is used for judging whether the current running state of the unit reaches a preset state or not; wherein the preset state is a state that triggers a failsafe mode;
and the adjusting module is used for adjusting the operation parameters of the unit when the operation state reaches the preset state.
Furthermore, the judging module is also used for monitoring the current working parameters of the unit; judging whether the working parameters meet preset conditions or not; the preset condition is that the difference value between the working parameter and a preset fault value is in a preset range; and if so, determining that the unit reaches the preset state.
Further, the operating parameters include at least one of: system pressure of the unit, compressor discharge temperature of the unit, and intelligent power module IPM temperature.
Further, the adjusting module is further configured to, when the operating parameter is the system pressure or the compressor discharge temperature, down-regulate an operating frequency of the compressor by F; after a preset time interval, if the system pressure is still greater than a preset system pressure fault value-a first preset difference value, or the compressor exhaust temperature is greater than a preset exhaust temperature fault value-a second preset difference value, accelerating the adjustment speed by delta v and increasing the adjustment amplitude by delta F; when the adjusting times are N times, adjusting the speed to be V + (N-1) delta V and the adjusting amplitude to be F + (N-1) delta F until the unit is in a stable state; wherein V is the initial adjustment speed, F is the initial adjustment amplitude, Δ V is the variation of each adjustment speed, and Δ F is the variation of each adjustment amplitude.
Further, the adjusting module is further configured to, when the operating parameter is an IPM temperature, down-regulate an operating frequency of the compressor by F; after the interval of the preset time, if the IPM temperature is still larger than the IPM temperature preset fault value-a third preset difference value, the adjusting speed of the running frequency of the compressor is increased by delta v, and the adjusting amplitude is increased by delta F; increasing the rotating speed of the fan by delta R; when the adjusting times are N times, the adjusting speed is V + (N-1) delta V, and the adjusting amplitude is F + (N-1) delta F; the rotating speed of the fan is R + (N-1) delta R until the unit is in a stable state; wherein, V is the initial adjustment speed, F is the initial adjustment range, and Δ V is the change of adjustment speed each time, and Δ F is the change of adjustment range each time, and R is the initial fan rotational speed, and Δ R is the change of adjustment rotational speed each time.
Furthermore, the judging module is also used for determining the current operation mode of the unit; judging whether the current operation mode is in a fault protection mode; and if so, determining that the unit reaches the preset state.
Further, the current operation mode is a fan fault protection mode or a communication recovery rate fault protection mode.
Further, the adjusting module is further configured to, when the current operation mode is the fan fault protection mode, down-regulate the fan rotation speed by Δ R, and when the adjustment times are N times, the fan rotation speed is R + (N-1) Δ R until the fan is in a stable state.
Further, the adjusting module is further configured to adjust a communication baud rate when the current operation mode is the communication recovery rate fault protection mode and when the communication recovery rate of the unit is lower than a preset communication recovery rate, and monitor a change condition of the communication recovery rate in real time; and if the communication reply rate is reduced, adjusting the communication baud rate in the opposite direction until the communication reply rate is greater than or equal to the preset communication reply rate.
Further, the apparatus further comprises: and the prompting/reporting module is used for prompting a user to maintain and/or reporting the fault type to a manufacturer through GPRS or WIFI if the unit is still in the preset state in multiple operations before power failure. The prompting/reporting module is further used for prompting a user to maintain if the performance parameters of the unit do not reach preset performance parameters, and/or reporting the fault type to a manufacturer through GPRS or WIFI; the performance parameters comprise the air outlet temperature of the unit or the time required for reaching the preset air outlet temperature.
In a third aspect, the present invention also provides an assembly, characterized in that the assembly comprises the device of the second aspect.
By applying the technical scheme of the invention, whether the current running state of the unit reaches a preset state is judged; the preset state is a state for triggering a fault protection mode; and when the running state reaches a preset state, adjusting the running parameters of the unit. Therefore, when the unit reaches the state of triggering the fault protection mode, the running parameters of the unit are automatically adjusted, and the fault protection mode is prevented from being frequently triggered in the complex and changeable environment outside the plant in the later use of the unit. The use experience of the user is improved, and complaints of the user are reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the modules of the assembly according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for adjusting an operating parameter of a unit according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method for adjusting an operating parameter of a unit according to an embodiment of the present invention;
FIG. 4 is a flow chart of a method for adjusting an operating parameter of a unit according to an embodiment of the present invention;
FIG. 5 is a flow chart of a method for adjusting an operating parameter of a unit according to an embodiment of the present invention;
fig. 6 is a block diagram of an apparatus for adjusting an operating parameter of a unit according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments, it being understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.
In order to more clearly describe the present invention, an air conditioner is taken as an example, and the adjustment manner of the unit when the fault protection mode is triggered in the related art is specifically described below. The air conditioner is powered on to operate, the air conditioner control system acquires curing parameters (such as the operating frequency of a compressor) of the air conditioning unit from the storage device, and the air conditioner control system controls the operation of the air conditioner load according to the curing parameters. When the sensor detects that the parameters such as pressure, temperature and the like reach preset parameters, the air conditioning unit executes fixed protective measures, reports faults and stops the machine, and prompts a user to maintain. And after the shutdown time is up, the system can be restarted to operate. For example, the down time may be 3 minutes. After restarting, the operation is still performed according to the previous curing parameters until the unit fails to operate (for example, the number of failures reaches a set number or the unit is damaged). Therefore, frequent triggering of the fault protection mode and shutdown can affect normal use of users, increase the complaint rate of users, and are not beneficial to popularization and promotion of products.
Fig. 1 shows a schematic view of a crew module according to an embodiment of the present invention. The following describes and describes an embodiment of the present invention by taking an air conditioning unit as an example, but it should be understood that the application scenario of the embodiment of the present invention is not limited to air conditioning. The air conditioning assembly shown in fig. 1 comprises: the system comprises a manufacturer server 1, a General Packet Radio Service (GPRS)/WIreless Fidelity (WIFI) module 2, a display terminal 3, an air conditioner control system 4, a storage device 5, an air conditioner load 6 and various sensors 7.
The factory server 1 is used for collecting data reported by air conditioning units in various places so as to know the running condition of the air conditioning units in time and provide home maintenance for users when necessary; the GPRS/WIFI module is used for realizing information transmission and interaction between a manufacturer and the air conditioning unit; the display terminal 3 is used for prompting the current running state of the air conditioning unit of a user and reporting the running state of the air conditioning unit to a manufacturer; the air conditioner control system 4 is used for judging the running state of the air conditioner unit according to the data collected by various sensors and synchronously adjusting the running parameters (such as the running frequency of the compressor) of the air conditioner unit; the storage device 4 is used for storing the operation parameters of the unit; the air conditioning load 6 is used for executing commands of an air conditioning control system and adjusting the operation of the air conditioning unit according to the commands; and various sensors 7 are used for acquiring data such as temperature, pressure and the like so as to determine the operating state of the air conditioning unit (for example, the pressure sensor acquires the system pressure of the air conditioning unit).
It should be noted that the method described in the following embodiments may be executed according to the structural schematic diagram of each module of the unit shown in fig. 1.
In order to solve the problem that fault protection is frequently triggered under certain conditions in the prior art, an embodiment of the present invention provides a method for adjusting an operating parameter of a unit, as shown in fig. 2, where the method includes:
step S201, judging whether the current running state of the unit reaches a preset state.
The preset state is a state for triggering a fault protection mode;
and S202, when the running state reaches a preset state, adjusting the running parameters of the unit.
Therefore, when the unit reaches the state of triggering the fault protection mode, the running parameters of the unit are automatically adjusted, and the fault protection mode is prevented from being frequently triggered in the complex and changeable environment outside the plant in the later use of the unit. The use experience of the user is improved, and complaints of the user are reduced.
Before step S201, the method may further include: the unit is powered on to operate, the air conditioner control system obtains curing operation parameters (such as the operation frequency of a compressor) of the unit when the unit leaves a factory from the storage device, and the operation of the unit is controlled according to the curing operation parameters. And in the running process of the unit, the sensor monitors the working parameters such as system pressure, compressor exhaust temperature and the like in real time or detects the working parameters at preset time intervals, and if the working parameters are not abnormal, namely the working parameters do not reach the preset state, the unit continues to run according to the current curing running parameters.
In a possible implementation manner, the step S201 of determining whether the current operation state of the unit reaches a preset state may include: monitoring the current working parameters of the unit; judging whether the working parameters meet preset conditions or not; the preset condition is that the difference value of the working parameter and the preset fault value is in a preset range; if so, determining that the unit reaches a preset state. Wherein, the working parameter at least comprises one of the following parameters: system pressure of the unit, compressor discharge temperature of the unit, and intelligent power module IPM temperature.
In a possible implementation manner, the step S201 of determining whether the current operation state of the unit reaches a preset state may further include: determining a current operation mode of the unit; judging whether the current operation mode is in a fault protection mode; if so, determining that the unit reaches a preset state. The current operation mode is a fan fault protection mode or a communication recovery rate fault protection mode.
It can be understood that the method for determining whether the current operating state of the unit reaches the preset state is different for different loads of the unit. For example, when the operating parameter is a system pressure, a compressor discharge temperature, or the like, the current system pressure and the current discharge temperature may be detected directly by a pressure sensor or a temperature sensor. When the difference between the working parameter and the preset fault value is within the preset range, it indicates that the working parameter gradually approaches the preset fault value (the magnitude relationship between the working parameter and the preset fault value is not fixed). At the moment, before the working parameters do not reach the preset fault value, the operation parameters of the unit are adjusted, so that the approaching speed of the working parameters of the unit and the preset fault value is slowed down or gradually reduced, and the fault protection mode can be prevented from being triggered.
However, for some loads of the unit, such as the fan, the rotation speed of the fan cannot be directly detected, which is different from the above-mentioned method of determining whether to trigger the fault protection mode according to the relationship between the working parameter and the preset fault value, and when the fan triggers the fault protection mode for the first time, the fan is used as a signal for feeding back the adjusted operating parameter to the unit. The operating parameters may be adjusted when the fan triggers the failsafe mode for the first time to avoid the fan frequently triggering the failsafe mode in later use. Wherein, the fan can be a direct current fan. It should be noted that the present invention aims to avoid the unit triggering the failsafe mode frequently, rather than absolutely. And when any one of the working parameters and the current operation mode reaches the state of triggering the fault protection mode, an adjusting mechanism of the unit can be triggered to adjust the operation parameters.
The two possible implementations described above are illustrated separately below. When the working parameter is system pressure or compressor exhaust temperature, adjusting the operating parameters of the unit, including: down-regulating the operating frequency of the compressor by F; after the interval of the preset time, if the system pressure is still larger than the preset fault value of the system pressure-a first preset difference value, or the exhaust temperature of the compressor is larger than the preset fault value of the exhaust temperature-a second preset difference value, the adjusting speed is accelerated by delta v, and the adjusting amplitude is increased by delta F; when the adjusting times are N times, adjusting the speed to be V + (N-1) delta V and the adjusting amplitude to be F + (N-1) delta F until the unit is in a stable state; wherein V is the initial adjustment speed, F is the initial adjustment amplitude, Δ V is the variation of each adjustment speed, and Δ F is the variation of each adjustment amplitude. When the working parameter is IPM temperature, adjusting the operation parameters of the unit, including: down-regulating the running frequency of the compressor by F; after the interval of the preset time, if the IPM temperature is still larger than the IPM temperature preset fault value-a third preset difference value, the adjusting speed of the running frequency of the compressor is increased by delta v, and the adjusting amplitude is increased by delta F; increasing the rotating speed of the fan by delta R; when the adjusting times are N times, the adjusting speed is V + (N-1) delta V, and the adjusting amplitude is F + (N-1) delta F; the rotating speed of the fan is R + (N-1) delta R until the unit is in a stable state; wherein, V is the initial adjustment speed, F is the initial adjustment range, and Δ V is the change of adjustment speed each time, and Δ F is the change of adjustment range each time, and R is the initial fan rotational speed, and Δ R is the change of adjustment rotational speed each time.
If the system pressure, the compressor exhaust temperature, the IPM temperature and other parameters detected by the sensors are abnormal, namely the parameters meet the preset conditions, the operation parameters of the unit can be adjusted. For example, when the system pressure is significantly higher or lower than a system pressure value (a preset system pressure fault value) tested in a plant or the exhaust temperature of the compressor rises higher and is closer to a difference value of the preset fault value, and is already at a second preset difference value, the unit actively enters a self-regulation mode to reduce the operating frequency of the compressor or increase the rotating speed of the fan, and monitors the working parameters again after each regulation, and if the working parameters still meet preset conditions, the regulation force is increased according to the above formula, for example, the amplitude of the frequency reduction of the compressor is increased, the frequency reduction speed of the compressor is increased, the rotating speed of the fan is increased, and the like. After adjustment, the working parameters are monitored again until the working parameters do not accord with preset conditions (namely, the state of triggering the fault protection mode is not reached), and the unit tends to stably run. The adjustment is stopped.
It should be noted that the possible implementation described above describes the case where the operating parameter rises and approaches the preset fault value. In real life, the operating parameters may also decrease and approach the minimum threshold of the preset fault value. For example, the system pressure may increase when the outdoor unit is installed to cause poor ventilation, or may decrease when the system is deficient in fluorine. It will be appreciated that the process of adjusting the operating parameters when the system pressure or remaining operating parameters are decreasing is the reverse of the process described above when the system pressure or remaining operating parameters are increasing.
When the current operation mode is a fan fault protection mode, adjusting the operation parameters of the unit comprises: and (3) regulating the rotating speed of the fan by delta R, and when the regulating frequency is N times, regulating the rotating speed of the fan to be R + (N-1) delta R until the fan is in a stable state. When the current operation mode is a communication recovery rate fault protection mode, adjusting the operation parameters of the unit comprises the following steps: when the communication reply rate of the unit is lower than the preset communication reply rate, adjusting the communication baud rate, and monitoring the change condition of the communication reply rate in real time; if the communication reply rate is reduced, the communication baud rate is adjusted in the opposite direction until the communication reply rate is greater than or equal to the preset communication reply rate.
In which, the temperature and other factors may cause the deviation of the communication baud rate and cause the communication recovery rate to change, thereby causing the system to receive abnormally. Therefore, when the communication reply rate of the unit is monitored to be lower than the preset communication reply rate, the communication baud rate can be adjusted, and the change condition of the communication reply rate can be monitored in real time. To avoid frequent entering of the communication recovery rate failsafe mode.
The inventor finds that the detection of the unit operation state is not limited to system pressure, compressor exhaust temperature and the like, and can also include monitoring of parameters such as air quality, operation current, operation voltage, temperature of each device and the like, and can relate to the aspects of a system or a controller. Correspondingly, the adjustment of the operation parameters when the fault protection mode is triggered is not limited to the adjustment of the parameters when the fault protection mode is triggered, such as system high-voltage protection, exhaust temperature protection, drive module protection, fan protection and communication fault protection, and can also include corresponding adjustment measures when other fault protection modes are used, so that the unit can be comprehensively monitored, and the frequent triggering of the fault protection mode by the unit can be further avoided.
It should be noted that, after the step S202, adjusting the operation parameters of the unit, the method further includes: when the operation parameters of the unit reach critical values, stopping adjustment; wherein the operating parameters include at least one of: the running frequency of the compressor, the rotating speed of the fan and the communication baud rate.
It will be appreciated that when the operating parameters of the unit reach a threshold value, further adjustments may affect the operation of the system or the performance of the load. The critical value can be set by a manufacturer according to the performance of the air conditioning unit and the load. Therefore, the unit can be prevented from being damaged in the adjusting process.
In a possible implementation manner, as shown in fig. 3, after the step S202 of adjusting the operation parameters of the unit, an embodiment of the present invention further provides a method for adjusting the operation parameters of the unit, where the method includes:
step S203, if the unit is in a stable state in multiple running before power failure; and storing the adjusted operating parameters so that the unit can be started according to the adjusted operating parameters after the power failure restart.
The multiple operation of the unit before power failure can be multiple operation after the unit is stopped and started for multiple times, namely, the unit is in a standby state. And when storing the adjusted operating parameters, the process of adjusting the operating parameters, i.e., the adjustment mode, may also be stored. Therefore, the unit can be started according to the adjusted running parameters which are not easy to trigger the fault protection mode after power failure restart, and is not started according to the curing parameters, and frequent triggering of the fault protection mode can be further avoided.
In one possible implementation manner, as shown in fig. 3, after the adjusting the operation parameters of the unit in step S202, the method further includes:
and S204, if the unit is still in a preset state in multiple running before power failure, prompting a user to maintain and/or reporting the fault type to a manufacturer through GPRS or WIFI.
Wherein, if after adjustment many times, the unit still can't avoid getting into the fault protection mode, then accessible display terminal shows or reports the mode of warning tone, scintillation warning light and reminds the user to maintain. For the units networked with the manufacturer through WIFI or GPRS, the fault type can be actively reported to the manufacturer through GPRS or WIFI, so that the manufacturer can know the fault type in advance, staff can be arranged to be maintained at home in time, and the after-sale service quality is improved.
In one possible implementation manner, as shown in fig. 4, after the adjusting the operation parameters of the unit in step S202, the method further includes:
and S205, if the performance parameters of the unit do not reach the preset performance parameters, prompting a user to maintain and/or reporting the fault type to a manufacturer through GPRS or WIFI. The performance parameters comprise the air outlet temperature of the unit or the time required for reaching the preset air outlet temperature. In the case that the unit has already reached the stable operation after being adjusted, the operating state of the unit still needs to be monitored by a sensor, for example, the exhaust temperature of the unit and the current outlet temperature are monitored, and the time required for reaching the preset outlet temperature is reached. After the operation parameters are determined to be adjusted, whether the performance parameters of the unit reach preset performance parameters or not and whether the performance of the unit can meet the basic use requirements of a user or not are determined, if the performance of the unit cannot meet the basic use requirements of the user, the user needs to be reminded to maintain through a display terminal, or the performance of the unit is actively reported to a manufacturer through GPRS or WIFI.
For example, the user sets the unit to operate at 26 degrees in the cooling mode, with a current indoor temperature of 30 degrees. The time required to reduce from 30 to 26 degrees is 5 minutes, according to the operational capacity of a conventional unit. The adjustment of the operating parameters by the unit may result in a longer time to decrease from 30 degrees to 26 degrees, which may be 7 minutes, for example. In this case, the user's needs are still satisfied. However, if the temperature cannot be reduced to 26 degrees within a preset time period after the operation parameters are adjusted, for example, twenty minutes cannot be reduced to 26 degrees, it is determined that the user requirement cannot be met. By adopting the implementation mode, a balance point can be selected between the reliability and the performance of the unit, and the phenomenon that the operation parameters of the unit are excessively adjusted to influence the performance of the unit or even can not meet the requirements of users only by aiming at not triggering a fault protection mode is avoided. Therefore, the unit can independently learn the comprehensive performance and reliability to generate and store the optimal operation parameters. And when the maintenance is needed, the user is prompted to maintain, so that the unit can work more flexibly, and the user requirements are further met.
In a possible implementation manner, as shown in fig. 5, an embodiment of the present invention further provides a method for adjusting an operation parameter of a unit, where the method includes:
step S501, electrifying the unit;
step S502, the control system reads the solidified operation parameters from the storage device;
step S503, the control system monitors the running state in real time;
step S504, system pressure > (default value A- △ A);
step S505, adjusting the running frequency of the compressor down △ F1;
after the steps S506 and △ T1, the system pressure is still larger than (the preset value A- △ A);
step S507, increasing the down-regulation amplitude of the running frequency of the compressor to △ F, and increasing the down-regulation speed to △ V;
step S508, exhaust temperature > (default value B- △ B);
step S509, adjusting the running frequency of the compressor down △ F1;
after the steps S510 and △ T1, the exhaust temperature is still larger than (the preset value B- △ B);
step S511, increasing the down-regulation amplitude of the operating frequency to △ F, and increasing the down-regulation speed to △ V;
step S512, driving module temperature > (default value C- △ C);
step S513, the operation frequency of the compressor is reduced down △ F1, and the rotating speed of the outer fan is increased △ R;
after the steps S514 and △ T1, the temperature of the driving module is still larger than (the preset value is C- △ C);
step S515, increasing the down-regulation amplitude of the running frequency of the compressor by △ F, increasing the down-regulation speed by △ V, and increasing the speed increase amplitude of the outer fan by △ R1;
s516, protecting the direct current fan for the first time;
step S517, regulating the target running rotating speed of the direct current fan to be △ R;
step S518, the direct current fan is still protected;
s519, increasing the target operation speed reduction amplitude of the direct current fan △ R1;
step S520, the unit communication recovery rate is lower than D%;
step S521, the unit communication baud rate is properly adjusted in a fine mode, and abnormal receiving caused by baud rate deviation caused by factors such as temperature is avoided;
step S522, if the communication recovery rate is poor;
step S523, adjusting the communication baud rate in the opposite direction;
step S525, the unit can still tend to a stable state after multiple operations;
step S527, memorizing the current operation parameters and the regulation and control mode of the unit in a storage device;
step S528, the unit performance cannot meet the user requirement;
and S529, reminding the user of reporting for repair or actively reporting to allow the manufacturer to visit for repair according to the protection type.
Therefore, the running states of the unit, such as the system pressure, the exhaust temperature, the pipe temperature, the temperature of the driving module, the communication recovery rate of the controller and the like of the unit are judged actively, the original curing running parameters of the unit are adjusted timely, such as the running frequency of a compressor is reduced, the frequency reduction speed of the compressor is increased, the rotating speed of a fan is increased, the communication baud rate is adjusted, the unit is prevented from approaching a fault protection state by adjusting the parameters resistively, the optimal running parameters are finally obtained between the unit protection and the performance, the unit runs stably, the user complaint is avoided, and the performance state of the unit is reported actively if the performance state of the unit is too low synchronously, so that personnel can be arranged in a factory.
Fig. 6 shows an apparatus for adjusting an operation parameter of a unit, which is used for executing the method shown in fig. 2, according to an embodiment of the present invention, and the apparatus includes:
the judging module 601 is configured to judge whether a current operation state of the unit reaches a preset state; the preset state is a state for triggering a fault protection mode;
the adjusting module 602 is configured to adjust an operation parameter of the unit when the operation state reaches a preset state.
Therefore, when the unit reaches the state of triggering the fault protection mode, the running parameters of the unit are automatically adjusted, and the fault protection mode is prevented from being frequently triggered in the complex and changeable environment outside the plant in the later use of the unit. The use experience of the user is improved, and complaints of the user are reduced.
In a possible implementation manner, the determining module 601 is further configured to monitor a current working parameter of the unit; judging whether the working parameters meet preset conditions or not; the preset condition is that the difference value of the working parameter and the preset fault value is in a preset range; if so, determining that the unit reaches a preset state. The operating parameters include at least one of: system pressure of the unit, compressor discharge temperature of the unit, and intelligent power module IPM temperature. The adjusting module 602 is further configured to, when the operating parameter is a system pressure or a compressor discharge temperature, down-regulate an operating frequency of the compressor by F; after the interval of the preset time, if the system pressure is still larger than the preset fault value of the system pressure-a first preset difference value, or the exhaust temperature of the compressor is larger than the preset fault value of the exhaust temperature-a second preset difference value, the adjusting speed is accelerated by delta v, and the adjusting amplitude is increased by delta F; when the adjusting times are N times, adjusting the speed to be V + (N-1) delta V and the adjusting amplitude to be F + (N-1) delta F until the unit is in a stable state; wherein V is the initial adjustment speed, F is the initial adjustment amplitude, Δ V is the variation of each adjustment speed, and Δ F is the variation of each adjustment amplitude. The adjusting module 602 is further configured to adjust the operating frequency of the compressor down by F when the operating parameter is the IPM temperature; after the interval of the preset time, if the IPM temperature is still larger than the IPM temperature preset fault value-a third preset difference value, the adjusting speed of the running frequency of the compressor is increased by delta v, and the adjusting amplitude is increased by delta F; increasing the rotating speed of the fan by delta R; when the adjusting times are N times, the adjusting speed is V + (N-1) delta V, and the adjusting amplitude is F + (N-1) delta F; the rotating speed of the fan is R + (N-1) delta R until the unit is in a stable state; wherein, V is the initial adjustment speed, F is the initial adjustment range, and Δ V is the change of adjustment speed each time, and Δ F is the change of adjustment range each time, and R is the initial fan rotational speed, and Δ R is the change of adjustment rotational speed each time.
In a possible implementation manner, the determining module 601 is further configured to determine a current operation mode of the unit; judging whether the current operation mode is in a fault protection mode; if so, determining that the unit reaches a preset state. The current operation mode is a fan fault protection mode or a communication recovery rate fault protection mode. The adjusting module 602 is further configured to, when the current operation mode is the fan fault protection mode, down-regulate the fan rotation speed by Δ R, and when the adjustment times is N times, adjust the fan rotation speed by R + (N-1) Δ R until the fan is in a stable state. The adjusting module 602 is further configured to adjust the communication baud rate when the current operation mode is the communication recovery rate fault protection mode and the communication recovery rate of the cell set is lower than the preset communication recovery rate, and monitor a change condition of the communication recovery rate in real time; if the communication reply rate is reduced, the communication baud rate is adjusted in the opposite direction until the communication reply rate is greater than or equal to the preset communication reply rate.
Thus, an appropriate monitoring method can be selected according to different loads. For example, when the load is a compressor, the discharge temperature of the compressor may be monitored, and when the load is a fan, it may be determined whether the current operation mode is in a fan fail-safe mode. Therefore, whether the unit triggers the fault protection mode can be judged more flexibly and accurately, the fault protection mode is prevented from being triggered frequently, and the use experience of a user is improved.
In one possible implementation, the apparatus further includes: and the prompting/reporting module is used for prompting a user to maintain and/or reporting the fault type to a manufacturer through GPRS or WIFI if the unit is still in a preset state in multiple operations before power failure. The prompting/reporting module is further used for prompting a user to maintain if the performance parameters of the unit do not reach the preset performance parameters, and/or reporting the fault type to a manufacturer through GPRS or WIFI; the performance parameters comprise the air outlet temperature of the unit or the time required for reaching the preset air outlet temperature.
Therefore, the unit can independently learn the comprehensive performance and reliability to generate and store the optimal operation parameters. And when the maintenance is needed, the user is prompted to maintain, so that the unit can work more flexibly, and the user requirements are further met.
An embodiment of the present invention further provides a unit, where the unit includes the device shown in fig. 6, and when the unit is an air conditioner, reference may be made to fig. 1 for a structure diagram of modules in the unit.
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 apparatus 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 apparatus. 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 apparatus 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 (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a mobile terminal (such as a mobile phone, a computer, a server, a set of machines, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments illustrated in the drawings, the present invention is not limited to the embodiments, which are illustrative rather than restrictive, and it will be apparent to those skilled in the art that many more modifications and variations can be made without departing from the spirit of the invention and the scope of the appended claims.
Claims (21)
1. A method of adjusting an operating parameter of a unit, the method comprising:
judging whether the current running state of the unit reaches a preset state or not; wherein the preset state is a state that triggers a failsafe mode;
when the running state reaches the preset state, adjusting the running parameters of the unit;
judging whether the current running state of the unit reaches a preset state or not, including:
monitoring the current working parameters of the unit;
judging whether the working parameters meet preset conditions or not; the preset condition is that the difference value between the working parameter and a preset fault value is in a preset range;
if so, determining that the unit reaches the preset state;
the operating parameters include at least one of: system pressure of the unit, compressor discharge temperature of the unit, and intelligent power module IPM temperature;
adjusting an operating parameter of the unit when the operating parameter is the system pressure or the compressor discharge temperature, comprising:
down-regulating an operating frequency of the compressor by F;
after a preset time interval, if the system pressure is still greater than a preset system pressure fault value-a first preset difference value, or the compressor exhaust temperature is greater than a preset exhaust temperature fault value-a second preset difference value, accelerating the adjustment speed by delta v and increasing the adjustment amplitude by delta F;
when the adjusting times are N times, adjusting the speed to be V + (N-1) delta V and the adjusting amplitude to be F + (N-1) delta F until the unit is in a stable state;
wherein V is the initial adjustment speed, F is the initial adjustment amplitude, Δ V is the variation of each adjustment speed, and Δ F is the variation of each adjustment amplitude.
2. The method of claim 1, wherein adjusting the operating parameter of the unit when the operating parameter is IPM temperature comprises:
down-regulating the running frequency of the compressor by F;
after the interval of the preset time, if the IPM temperature is still larger than the IPM temperature preset fault value-a third preset difference value, the adjusting speed of the running frequency of the compressor is increased by delta v, and the adjusting amplitude is increased by delta F;
increasing the rotating speed of the fan by delta R;
when the adjusting times are N times, the adjusting speed is V + (N-1) delta V, and the adjusting amplitude is F + (N-1) delta F; the rotating speed of the fan is R + (N-1) delta R until the unit is in a stable state;
wherein, V is the initial adjustment speed, F is the initial adjustment range, and Δ V is the change of adjustment speed each time, and Δ F is the change of adjustment range each time, and R is the initial fan rotational speed, and Δ R is the change of adjustment rotational speed each time.
3. The method of claim 1, wherein determining whether the current operating state of the unit reaches a preset state comprises:
determining a current operation mode of the unit;
judging whether the current operation mode is in a fault protection mode;
and if so, determining that the unit reaches the preset state.
4. The method of claim 3, wherein the current operating mode is a fan failsafe mode or a communication recovery failsafe mode.
5. The method of claim 4, wherein adjusting the operational parameters of the unit when the current operational mode is the fan fault protection mode comprises:
the rotating speed of the fan is adjusted down by delta R,
and when the adjusting times are N times, the rotating speed of the fan is R + (N-1) delta R until the fan is in a stable state.
6. The method of claim 4, wherein adjusting the operating parameters of the crew when the current operating mode is the communication recovery rate failsafe mode comprises:
when the communication reply rate of the unit is lower than the preset communication reply rate, adjusting the communication baud rate, and monitoring the change condition of the communication reply rate in real time;
and if the communication reply rate is reduced, adjusting the communication baud rate in the opposite direction until the communication reply rate is greater than or equal to the preset communication reply rate.
7. The method of claim 1, wherein after adjusting the operating parameters of the unit, the method further comprises:
when the operation parameters of the unit reach critical values, stopping adjustment; wherein the operating parameters include at least one of: the compressor running frequency, the fan rotating speed and the communication baud rate.
8. The method of claim 1, wherein after adjusting the operating parameters of the unit, the method further comprises:
if the unit is in a stable state in multiple running before power failure; and storing the adjusted operating parameters so that the unit can be started according to the adjusted operating parameters after the power failure restart.
9. The method of claim 1, wherein after adjusting the operating parameters of the unit, the method further comprises:
and if the unit is still in the preset state in multiple operations before power failure, prompting a user to maintain and/or reporting the fault type to a manufacturer through GPRS or WIFI.
10. The method of claim 1, wherein after adjusting the operating parameters of the unit, the method further comprises:
if the performance parameters of the unit do not reach the preset performance parameters, prompting a user to maintain and/or reporting the fault type to a manufacturer through GPRS or WIFI; the performance parameters comprise the air outlet temperature of the unit or the time required for reaching the preset air outlet temperature.
11. An apparatus for adjusting an operating parameter of a unit, the apparatus being configured to perform the method of any one of claims 1-10, the apparatus comprising:
the judging module is used for judging whether the current running state of the unit reaches a preset state or not; wherein the preset state is a state that triggers a failsafe mode;
and the adjusting module is used for adjusting the operation parameters of the unit when the operation state reaches the preset state.
12. The apparatus of claim 11,
the judging module is also used for monitoring the current working parameters of the unit;
judging whether the working parameters meet preset conditions or not; the preset condition is that the difference value between the working parameter and a preset fault value is in a preset range;
and if so, determining that the unit reaches the preset state.
13. The apparatus of claim 12, wherein the operating parameter comprises at least one of: system pressure of the unit, compressor discharge temperature of the unit, and intelligent power module IPM temperature.
14. The apparatus of claim 13,
the adjusting module is further configured to down-regulate an operating frequency of the compressor by F when the operating parameter is the system pressure or the compressor discharge temperature;
after a preset time interval, if the system pressure is still greater than a preset system pressure fault value-a first preset difference value, or the compressor exhaust temperature is greater than a preset exhaust temperature fault value-a second preset difference value, accelerating the adjustment speed by delta v and increasing the adjustment amplitude by delta F;
when the adjusting times are N times, adjusting the speed to be V + (N-1) delta V and the adjusting amplitude to be F + (N-1) delta F until the unit is in a stable state;
wherein V is the initial adjustment speed, F is the initial adjustment amplitude, Δ V is the variation of each adjustment speed, and Δ F is the variation of each adjustment amplitude.
15. The apparatus of claim 13,
the adjusting module is further used for adjusting the running frequency of the compressor down to F when the working parameter is IPM temperature;
after the interval of the preset time, if the IPM temperature is still larger than the IPM temperature preset fault value-a third preset difference value, the adjusting speed of the running frequency of the compressor is increased by delta v, and the adjusting amplitude is increased by delta F;
increasing the rotating speed of the fan by delta R;
when the adjusting times are N times, the adjusting speed is V + (N-1) delta V, and the adjusting amplitude is F + (N-1) delta F; the rotating speed of the fan is R + (N-1) delta R until the unit is in a stable state;
wherein, V is the initial adjustment speed, F is the initial adjustment range, and Δ V is the change of adjustment speed each time, and Δ F is the change of adjustment range each time, and R is the initial fan rotational speed, and Δ R is the change of adjustment rotational speed each time.
16. The apparatus of claim 11,
the judging module is also used for determining the current operation mode of the unit;
judging whether the current operation mode is in a fault protection mode;
and if so, determining that the unit reaches the preset state.
17. The apparatus of claim 16, wherein the current operating mode is a fan failsafe mode or a communication recovery failsafe mode.
18. The apparatus of claim 17,
the adjusting module is further configured to adjust the fan rotation speed by Δ R when the current operating mode is the fan fault protection mode,
and when the adjusting times are N times, the rotating speed of the fan is R + (N-1) delta R until the fan is in a stable state.
19. The apparatus of claim 17,
the adjusting module is further configured to adjust a communication baud rate when the current operation mode is the communication recovery rate fault protection mode and when the communication recovery rate of the unit is lower than a preset communication recovery rate, and monitor a change condition of the communication recovery rate in real time;
and if the communication reply rate is reduced, adjusting the communication baud rate in the opposite direction until the communication reply rate is greater than or equal to the preset communication reply rate.
20. The apparatus of claim 11, further comprising:
the prompting/reporting module is used for prompting a user to maintain and/or reporting the fault type to a manufacturer through GPRS or WIFI if the unit is still in the preset state in multiple operations before power failure;
the prompting/reporting module is further used for prompting a user to maintain if the performance parameters of the unit do not reach preset performance parameters, and/or reporting the fault type to a manufacturer through GPRS or WIFI; the performance parameters comprise the air outlet temperature of the unit or the time required for reaching the preset air outlet temperature.
21. An assembly, characterized in that the assembly comprises a device according to any one of claims 11-20.
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| CN110296500B (en) * | 2019-07-10 | 2020-10-02 | 珠海格力电器股份有限公司 | Unit maintenance requirement determining method and device based on user tolerance condition and air conditioner |
| CN110519389B (en) * | 2019-09-03 | 2022-09-20 | 三一重机有限公司 | Parameter adjusting method and device for engineering equipment, engineering equipment and storage medium |
| CN110928409B (en) * | 2019-11-12 | 2023-05-09 | 中国第一汽车股份有限公司 | Vehicle-mounted scene mode control method and device, vehicle and storage medium |
| CN112019131A (en) * | 2020-08-10 | 2020-12-01 | 深圳市杉川机器人有限公司 | Motor rotation speed-based protection method and device, sweeper and computer medium |
| CN112923505B (en) * | 2021-02-25 | 2022-04-19 | 宁波奥克斯电气股份有限公司 | Frequency control method and system for variable frequency air conditioner and air conditioner |
| CN115264747A (en) * | 2022-07-21 | 2022-11-01 | 珠海格力电器股份有限公司 | Non-communication air conditioning unit control method and device and non-communication air conditioning unit |
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| KR20100008026A (en) * | 2008-07-15 | 2010-01-25 | 삼성전자주식회사 | Method of protecting compressor in air conditioner |
| CN104236010B (en) * | 2013-06-20 | 2017-02-22 | 广东美的集团芜湖制冷设备有限公司 | Control method of air conditioner |
| CN105546732B (en) * | 2015-12-22 | 2019-01-22 | 广东美的暖通设备有限公司 | Multi-line system and its outer machine release control method |
| CN106679066B (en) * | 2016-11-17 | 2019-10-25 | 珠海格力电器股份有限公司 | A kind of unit fault judgment method and device |
| CN106839260A (en) * | 2016-12-12 | 2017-06-13 | 广东芬尼克兹节能设备有限公司 | One kind exhaust protection control method and system |
| CN107091517B (en) * | 2017-06-30 | 2023-09-12 | 珠海格力电器股份有限公司 | Protection control method and device of air conditioner unit and air conditioner unit |
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