CN112555179A - Fan overload protection control method and device, computer equipment and storage medium - Google Patents
Fan overload protection control method and device, computer equipment and storage medium Download PDFInfo
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- CN112555179A CN112555179A CN202011389765.0A CN202011389765A CN112555179A CN 112555179 A CN112555179 A CN 112555179A CN 202011389765 A CN202011389765 A CN 202011389765A CN 112555179 A CN112555179 A CN 112555179A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The embodiment of the application discloses a fan overload protection control method, a fan overload protection control device, computer equipment and a storage medium; the method comprises the following steps: receiving a fan starting signal, and detecting whether the fan is overloaded or not; if the fan is detected to be overloaded, accumulating the number of times of the fan overload; calculating the defrosting heating accumulated time after the fan is started for the first time; performing overload shutdown control on the unit based on the corresponding relation between the defrosting and heating accumulated time and the overload of the fan; according to the embodiment of the application, the defrosting and heating accumulated time is used as a judgment basis for the fan overload protection control, when the fan overload frequency reaches a preset threshold value, the defrosting and heating accumulated time is judged, whether the fan is overloaded due to the frosting of the fan is judged, the fan is effectively and timely protected when the fan is overloaded, and the fan is prevented from being irreversibly damaged; the frequency and the probability of overloading of the fan can be effectively reduced, and the service life of the fan is prolonged.
Description
Technical Field
The embodiment of the application relates to the technical field of heat pumps, in particular to a fan overload protection control method and device, computer equipment and a storage medium.
Background
The heat pump is a device which can obtain low-level heat energy from air, water or soil in the nature and provide high-level heat energy which can be used by people through electric energy acting. At present, heat pump systems are increasingly widely applied in the heating and cooling field, the existing low-temperature heat pumps are usually installed in the outdoor environment, and during the operation process, when the heat pumps are used in different areas, external factors are different, wherein the difference of the ambient temperature and the relative humidity affects the frosting time, and particularly, the frosting time is rapidly shortened in rainy and snowy weather. In the process of checking, the frequency and the probability of the occurrence of fan overload are found to be greatly increased because the unit is frosted. The traditional control method for fan overload protection is that in the running process of a fan, after a fan overload switch is detected to be disconnected, the fan is considered to be overloaded, fan overload protection is started, and a unit is closed.
Disclosure of Invention
The embodiment of the application provides a fan overload protection control method and device, computer equipment and a storage medium, and aims to solve the problems that when a fan is overloaded due to frosting of a unit, the unit is not protected timely and effectively, the unit is damaged, and the service life of the fan is influenced.
In a first aspect, an embodiment of the present application provides a fan overload protection control method, including:
receiving a fan starting signal, and detecting whether the fan is overloaded or not;
if the fan is detected to be overloaded, accumulating the number of times of the fan overload;
if the fan overload times are smaller than a preset threshold value, recording the defrosting and heating time of the fan after the fan is started for the last time and automatically starting the fan according to a preset flow;
if the overload times of the fan reach a preset threshold value, calculating the defrosting heating accumulated time after the fan is started for the first time;
and performing overload shutdown control on the unit based on the corresponding relation between the defrosting and heating accumulated time and the overload of the fan.
Further, based on the defrosting heating accumulated time and the overloaded corresponding relation of the fan, the method for controlling the fan comprises the following steps:
if the defrosting heating accumulated time is longer than the first set time, controlling the fan to defrost and shielding the fan from overload detection;
after defrosting is finished, whether the fan is overloaded or not is detected again, and if the fan overload duration is detected to reach a second set time, the unit is controlled to stop;
and if the defrosting and heating accumulated time is less than the first set time, controlling the unit to stop.
Further, if the number of times of fan overload reaches a preset threshold, calculating the cumulative defrosting heating duration after the fan is started for the first time, including:
and if the overload times of the fan are detected to reach a preset threshold value within the third set time, calculating the defrosting heating accumulated time after the fan is started for the first time.
Further, if it is overloaded to detect the fan, then accumulate the fan and overload the number of times, include:
if the fan is detected to be overloaded, controlling the fan to stop;
automatically restarting the fan after the fourth set time, and detecting whether the fan is overloaded again after the fifth set time;
if the fan state is detected to be normal continuously in the sixth set time period, judging that the fan fault is eliminated, and controlling the unit to restart;
and if the fan overload is detected again in the sixth set time period, repeating the steps of restarting the fan and detecting the fan overload, and accumulating the fan overload times.
Further, it transships to detect the fan, include:
receiving a fan starting signal, and detecting whether a fan overload switch is disconnected or not;
if the overload switch is detected to be closed, judging that the state of the fan is normal;
and if the detected fan overload switch disconnection time reaches the second set time, judging that the fan is overloaded.
Further, the control unit is shut down, including:
controlling the heat pump system compressor to be closed;
controlling the fan to delay the closing of the press;
and controlling the water pump to keep an opening state.
Further, receiving fan turn-on signal, detecting whether the fan transships includes:
receiving a fan starting signal, and judging whether the fan is started for a seventh set time;
and if the fan is started for the seventh set time, detecting whether the fan is overloaded or not.
In a second aspect, an embodiment of the present application provides a fan overload protection control device, including:
the overload detection module is used for receiving a fan starting signal and detecting whether the fan is overloaded or not;
the overload frequency detection module is used for detecting the overload of the fan and detecting the overload frequency of the fan;
the defrosting detection module is used for accumulating the overload times of the fan if the fan is detected to be overloaded; if the fan overload times are smaller than a preset threshold value, recording the defrosting and heating time of the fan after the fan is started for the last time and automatically starting the unit according to a preset flow; if the overload times of the fan reach a preset threshold value, calculating the defrosting heating accumulated time after the fan is started for the first time;
and the overload judging module is used for carrying out overload shutdown control on the unit based on the corresponding relation between the defrosting and heating accumulated time and the overload of the fan.
Further, the overload determination module includes: the defrosting device comprises a defrosting duration judging unit and a fan overload judging unit, wherein the defrosting duration judging unit is used for controlling the fan to defrost and shielding fan overload detection if the defrosting heating accumulated duration is longer than a first set time; the defrosting duration judging unit is used for controlling the unit to stop if the defrosting heating accumulated duration is less than a first set time; and the fan overload judging unit is used for finishing defrosting, detecting whether the fan is overloaded again, and controlling the fan unit to stop if the fan overload duration is detected to reach a second set time.
Further, the defrosting detection module is further configured to calculate a defrosting heating accumulated time after the fan is started for the first time if the number of times of fan overload is detected to reach a preset threshold value within a third set time.
Further, the overload number detection module includes: the system comprises an overload stop control unit, a restart overload judgment unit and an overload frequency acquisition unit; the overload stop control unit is used for controlling the unit to stop if the fan is detected to be overloaded; the restarting overload judging unit is used for restarting the fan after the fourth set time, and detecting whether the fan is overloaded again after the fifth set time; the restarting overload judging unit is used for judging that the fault is eliminated and controlling the unit to restart if the fan state is continuously detected to be normal in a sixth set time period; and the overload frequency acquisition unit is used for repeating the steps of restarting the fan and detecting the overload of the fan if the fan is detected to be overloaded again in a sixth set time period, and accumulating the overload frequency of the fan.
Further, the method also comprises the following steps: the fan overload detection module is used for receiving a fan starting signal and detecting whether a fan overload switch is disconnected or not; if the overload switch is detected to be closed, judging that the state of the fan is normal; and if the detected fan overload switch disconnection time reaches the second set time, judging that the fan is overloaded.
Further, the method also comprises the following steps: the unit shutdown control module is used for controlling the heat pump system compressor to be closed; controlling the fan to delay the closing of the press; and controlling the water pump to keep an opening state.
Further, the method also comprises the following steps: the fan starting detection module is used for receiving a fan starting signal and judging whether the fan is started for a seventh set time; and if the fan is started for the seventh set time, detecting whether the fan is overloaded or not.
In a third aspect, embodiments of the present application provide a computer device, including a memory and one or more processors;
the memory for storing one or more programs;
when the one or more programs are executed by the one or more processors, the one or more processors implement the fan overload protection control method according to the first aspect.
In a fourth aspect, the present application provides a storage medium containing computer executable instructions, which when executed by a computer processor, are configured to perform the wind turbine overload protection control method according to the first aspect.
According to the embodiment of the application, the defrosting and heating accumulated time is used as a judgment basis for the fan overload protection control, when the fan overload frequency reaches a preset threshold value, the defrosting and heating accumulated time is judged, whether the fan is overloaded due to the frosting of the fan is judged, the fan is effectively and timely protected when the fan is overloaded, and the fan is prevented from being irreversibly damaged; the frequency and the probability of overloading of the fan can be effectively reduced, and the service life of the fan is prolonged.
Drawings
Fig. 1 is a flowchart of a fan overload protection control method according to an embodiment of the present application;
FIG. 2 is a flow chart of another fan overload protection control method provided in the embodiment of the present application;
FIG. 3 is a flow chart of another fan overload protection control method provided in the embodiment of the present application;
fig. 4 is a schematic structural diagram of a fan overload protection control device according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a computer device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, specific embodiments of the present application will be described in detail with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some but not all of the relevant portions of the present application are shown in the drawings. Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the operations (or steps) as a sequential process, many of the operations can be performed in parallel, concurrently or simultaneously. In addition, the order of the operations may be re-arranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figure. The processes may correspond to methods, functions, procedures, subroutines, and the like.
The method for controlling the fan overload protection detects whether the fan is overloaded or not by receiving a fan opening signal, accumulates the number of times of the fan overload if the fan overload is detected, takes the accumulated defrosting heating time as a judgment basis for the fan overload protection control, judges the accumulated defrosting heating time when the number of times of the fan overload reaches a preset threshold value, judges whether the fan is overloaded due to the fan frosting or not, effectively and timely protects the fan when the fan is overloaded, and avoids the fan from being damaged irreversibly; the frequency and the probability of overloading of the fan can be effectively reduced, and the service life of the fan is prolonged. The existing low-temperature heat pump is usually installed in an outdoor environment, and when the low-temperature heat pump is used in different regions in the operation process, external factors are different, wherein the difference of the ambient temperature and the relative humidity influences the frosting time, and particularly when rain and snow weather occurs, the frosting time is rapidly shortened; in the process of investigation, the frequency and the probability of occurrence of fan overload are found to be greatly increased due to unit frosting; the traditional control of fan overload protection is that in the running process of a fan, after a fan overload switch is detected to be disconnected, the fan is considered to be overloaded, fan overload protection is started, and a unit is closed. Therefore, the fan overload protection control method provided by the embodiment of the application avoids the problems that when the fan is overloaded due to frosting of the unit, the unit is not protected timely and effectively, the unit is damaged, and the service life of the fan is influenced.
The fan overload protection control method provided in the embodiment may be executed by a fan overload protection control device, and the fan overload protection control device may be implemented in a software and/or hardware manner and integrated in a fan overload protection control apparatus. The fan overload protection control device can be a computer or other devices.
Fig. 1 is a flowchart of a fan overload protection control method according to an embodiment of the present application. Referring to fig. 1, the fan overload protection control method specifically includes:
and step 110, receiving a fan starting signal and detecting whether the fan is overloaded or not.
Specifically, the fan is controlled to be started, and when a fan starting signal is received, whether the fan starting time reaches the set time is judged, it can be understood that the fan starting set time can be set, can be set by user input, and can also be set by a user according to the fan characteristics; optionally, the set time for starting the fan is 50 seconds, that is, after the set time for starting the fan reaches 50 seconds, the fan starts to be detected whether the fan is overloaded or not.
And 120, if the fan is detected to be overloaded, accumulating the number of times of the overload of the fan.
Specifically, after the fan is started, whether the fan is overloaded or not is detected, wherein if the fan is detected to be normal, namely the fan overload switch is detected to be normally closed, the fan does not need to be processed, and the unit is controlled to normally work; the method comprises the steps of detecting that a fan is overloaded, namely detecting that a fan overload switch is disconnected, controlling the fan to stop to protect the fan, restarting the fan after 5 minutes, and judging whether the fan is overloaded again by a unit, wherein if the fan overload switch is detected to be closed, the fault is eliminated, the unit can be restarted, and if the fan overload switch is detected to be disconnected, the number of times of fan overload is detected.
And step 130, if the overload frequency of the fan is less than a preset threshold value, recording the defrosting and heating time after the fan is started for the last time, and automatically starting the fan according to a preset flow.
Illustratively, if the fan is overloaded, detecting the number of times of overloading of the fan, optionally, if the number of times of overloading of the fan is less than a preset threshold value, recording the defrosting and heating time of the fan after the fan is started last time, and automatically starting the fan according to a preset flow, wherein the preset flow is a flow which is set according to system characteristics, is used for automatically shutting down the fan when the fan is overloaded and is automatically started after the set time; optionally, the preset threshold may be set by itself, or may be set automatically according to the system characteristics; optionally, in this embodiment, the preset threshold is 3 times, that is, the number of times of fan overload is less than 3 times, and then the defrosting and heating time after the fan is turned on for the last time is recorded.
And 140, if the overload times of the fan reach a preset threshold value, calculating the defrosting heating accumulated time after the fan is started for the first time.
Illustratively, if the blower is detected to be overloaded, detecting the number of times of the overload of the blower, optionally, if the number of times of the overload of the blower reaches a preset threshold value, recording the accumulated defrosting and heating time after the blower is started for the first time, that is, the blower starts to work from the reception of a start signal until the number of times of the overload of the blower reaches the preset threshold value, optionally, the preset threshold value may be set by itself or may be set automatically according to the system characteristics; optionally, in this embodiment, the preset threshold is 3 times, that is, the number of times of fan overload reaches 3 times, and then the cumulative defrosting and heating time after the fan is turned on for the first time is calculated, where it can be understood that the cumulative defrosting and heating time after the fan is turned on for the first time is the sum of defrosting and heating times after the fans are turned on for the first time, the second time, and the third time until the fan is turned off due to overload.
And 150, performing overload shutdown control on the unit based on the corresponding relation between the defrosting and heating accumulated time and the overload of the fan.
It can be understood that the low-temperature heat pump is installed outdoors, and unit frosting may occur according to the ambient temperature and the relative temperature, wherein the unit frosting may cause the fan to be overloaded, it can be understood that when the number of times of the fan overload reaches a certain number, the accumulated defrosting heating time is detected, and whether the fan is overloaded is judged according to the accumulated defrosting time, if the accumulated defrosting heating time is greater than or equal to the set time, the unit immediately enters defrosting, and the fan overload protection is shielded; after defrosting is finished, restarting the fan, detecting whether the fan overload switch is disconnected or not again, if the fan overload switch is disconnected, if the fan overload switch is not caused by frosting, directly reporting the fan overload protection fault, stopping the unit, not automatically restarting again, and only manually recovering; if the fan overload switch is closed, the fan overload is caused by frosting, and the fan overload is eliminated by defrosting, and the fan state is normal. If the accumulated defrosting and heating time is less than the set time, the fan overload is not caused by frosting, the fan overload protection fault is directly reported, the unit is stopped, the unit is not automatically restarted any more, and only manual recovery can be realized. Therefore, the reason of fan overload is judged based on the accumulated defrosting and heating time, whether fan overload occurs due to frosting in grouping is judged, and therefore corresponding measures are taken for fan overload to control fan overload protection.
The above steps are not performed in the exact order in which they are described, which should be understood as an overall solution.
On the basis of the foregoing embodiment, fig. 2 is a flowchart of another wind turbine overload protection control method provided in the embodiment of the present application. The fan overload protection control method is embodied for the fan overload protection control method. Referring to fig. 2, the fan overload protection control method includes:
Illustratively, if the blower overload of a certain number of times is detected, when the blower overload of the corresponding number of times occurs, special judgment processing is performed: detecting the accumulated defrosting heating time; optionally, the number of times of detection may be set by itself, or may be set by itself according to the system characteristics; optionally, in this embodiment, by setting that the blower is overloaded 3 times within the third set time period, the defrosting and heating accumulated time length is detected when the blower is overloaded 3 times; optionally, the third set time period may be set by user input, or may be set by the user according to system characteristics; optionally, the third set time is 30-60 minutes; optionally, in this embodiment, when it is detected that the blower is overloaded for 3 times within 30 minutes, special judgment processing is performed when the blower is overloaded for the 3 rd time, and the defrosting and heating accumulated time is detected; it can be understood that the judgment basis of the fan overload protection control is carried out by introducing the defrosting heating accumulated time, so that the unit can be effectively and timely protected when the unit is overloaded, and the unit is prevented from being irreversibly damaged; and the problem that the fan is overloaded due to frosting of the unit can be solved, the frequency and probability of overloading of the fan can be effectively reduced, and the service life of the fan is prolonged.
And step 220, if the defrosting and heating accumulated time is longer than the first set time, controlling the fan to defrost and shielding the fan from overload detection.
For example, the defrosting heating accumulated time is judged, and whether the defrosting heating accumulated time is greater than a first set time at the moment is judged, it can be understood that the first set time may be data input by a user or data set according to system characteristics; optionally, the first set time in this embodiment is 20 minutes; and judging whether the defrosting heating accumulated time is longer than 20 minutes, if the defrosting heating accumulated time is longer than 20 minutes, controlling the fan to defrost, and simultaneously shielding the fan overload detection to shield the detection result of whether the fan is overloaded.
And step 230, after defrosting is finished, detecting whether the fan is overloaded again, and if the overload duration of the fan is detected to reach a second set time, controlling the fan to stop.
When the defrosting and heating accumulated time is longer than a first set time, namely longer than 20 minutes, the fan is controlled to defrost, after defrosting is finished, whether the fan is overloaded or not is detected again, if the fan overload time is detected to reach a second set time, the condition that the fan is overloaded and frosted is irrelevant is judged, the fan is controlled to stop, and whether the fan is overloaded or not is caused by unit frosting is obtained; if the fan state is detected to be normal, the fan is controlled to work normally, the condition that the fan is overloaded and frosted is obtained, and the fan is prevented from being overloaded during defrosting, so that the fan state is normal. Optionally, the second set time is 10 to 30 seconds; when the overload time of the fan reaches 10-30 seconds, the overload protection fault of the fan is directly reported, the fan is controlled to stop, the fan is not automatically restarted, and the fan can be manually recovered.
And 240, if the defrosting and heating accumulated time is less than the first set time, controlling the fan to stop.
The method comprises the steps of judging whether defrosting heating accumulated time is longer than first set time or not, namely judging whether defrosting heating accumulated time is longer than 20 minutes or not, if defrosting heating accumulated time is shorter than 20 minutes, judging that a defrosting system has a fault, judging that fan overload is irrelevant to frosting, controlling the fan to stop, and obtaining that the reason of fan overload is caused by unit frosting, so that the fan overload protection fault is directly reported, the fan is controlled to stop, the fan is not automatically restarted any more, only manual recovery is realized, and the fan is protected.
The unit is automatically recovered to operate by restarting the primary fan before the unit is overloaded for 3 times, after the unit is overloaded for 3 times, judgment basis for controlling overload protection of the fan is carried out by introducing defrosting heating accumulated time, whether the fan overload is caused by unit frosting is judged according to the defrosting heating accumulated time, the unit can be effectively and timely protected when the unit is overloaded, and irreversible damage to the unit is avoided; and the problem that the fan is overloaded due to frosting of the unit can be solved, the frequency and probability of overloading of the fan can be effectively reduced, and the service life of the fan is prolonged.
On the basis of the foregoing embodiment, fig. 3 is a flowchart of another wind turbine overload protection control method provided in the embodiment of the present application. The fan overload protection control method is embodied for the fan overload protection control method. Referring to fig. 3, the fan overload protection control method includes:
Specifically, after the fan is started for 50 seconds, whether the fan is overloaded or not is detected, and if the fan is overloaded at the second set time, namely, when the fan is continuously detected to be overloaded for 10 to 30 seconds, the fan is controlled to stop.
And 2302, restarting the fan after the fourth set time, and detecting whether the fan is overloaded again after the fifth set time.
Specifically, after the fan is detected to be overloaded and reach a second set time, the fan is controlled to stop, and the fan is restarted after a fourth set time; optionally, the fourth setting time is 5-20 minutes; wherein, after 5-20 minutes, the fan is restarted; after a fifth set time, detecting whether the fan is overloaded again, wherein optionally, the fifth set time is 40-60 seconds; optionally, the fifth setting time adopted in this embodiment is 50 seconds; and restarting the fan, running the fan, and judging whether the fan is overloaded again after 50 seconds.
And 2303, if the fan state is detected to be normal continuously in the sixth set time period, judging that the fan fault is eliminated, and controlling the unit to restart.
Specifically, after the fan is restarted, whether the fan is overloaded is detected again after a fifth set time, if the fan overload switch is continuously detected to be closed in a sixth set time period, optionally, the sixth set time period is 5 to 10 seconds, wherein if the fan overload switch is continuously detected to be closed in 5 to 10 seconds, the fan fault is eliminated, the fan state is normal, and the unit is controlled to be restarted.
And 2304, if the fan overload is detected again in the sixth set time period, repeating the steps of fan restart and fan overload detection, and accumulating the fan overload times.
Specifically, after the fan is restarted, whether the fan is overloaded is detected again after a fifth set time, if the fan overload switch is continuously detected to be disconnected within a sixth set time period, optionally, the sixth set time period is 5-10 seconds, wherein if the fan overload switch is continuously detected to be disconnected within 5-10 seconds, the fan overload is considered to occur, and the unit is controlled to stop; and after the fault occurs for 5-20 minutes, restarting the fan, namely repeating the steps of restarting the fan and detecting the overload of the fan, and accumulating the number of the overload times of the fan.
On the basis of the above embodiment, the fan overload protection control method may further be embodied as: whether detect the fan and transship includes: receiving a fan starting signal, and detecting whether a fan overload switch is disconnected or not; if the overload switch is detected to be closed, judging that the state of the fan is normal; and if the detected fan overload switch disconnection time reaches the second set time, judging that the fan is overloaded.
Specifically, a fan starting signal is received, whether the fan is overloaded or not is detected, optionally, whether an overload switch of the fan is off or not is detected, and if the overload switch is detected to be on, the fan is judged to be in a normal state; if the fan overload switch is detected to be turned off for a second set time, optionally, the second set time is 10-30 seconds; and if the detected disconnection time of the fan overload switch reaches 10-30 seconds, judging that the fan is overloaded.
On the basis of the above embodiment, the fan overload protection control method may further be embodied as: the control unit is shut down, including: controlling the heat pump system compressor to be closed; controlling the fan to delay the closing of the press; and controlling the water pump to keep an opening state.
Specifically, after the fan is overloaded, the fan is controlled to stop, and optionally, a heat pump system compressor corresponding to the unit is controlled to be closed; controlling the fan to delay the closing of the press, and optionally controlling the fan to delay the closing of the press for 1-5 minutes; meanwhile, the water pump is controlled to keep the opening state; the fan is stopped, the corresponding system is closed, the unit can be effectively and timely protected when the fan is overloaded, and the unit is prevented from being irreversibly damaged.
On the basis of the above embodiment, the fan overload protection control method may further be embodied as: receive fan turn-on signal, whether detect the fan and transship, include: receiving a fan starting signal, and judging whether the fan is started for a seventh set time; and if the fan is started for the seventh set time, detecting whether the fan is overloaded or not.
Specifically, after the fan is started, a fan starting signal is received, the running time of the fan is detected, and whether the fan starting time reaches a seventh set time is judged, wherein optionally the seventh set time is 50 seconds; when the starting time of the fan reaches 50 seconds, the system of each part of the unit is ensured to start to run, and whether the fan is overloaded or not is detected.
On the basis of the foregoing embodiment, fig. 4 is a schematic structural diagram of a fan overload protection control device provided in the embodiment of the present application. Referring to fig. 4, the image processing apparatus provided in this embodiment specifically includes: the system comprises an overload detection module 301, an overload frequency detection module 302, a defrosting detection module 303 and an overload judgment module 304.
The overload detection module 301 is configured to receive a fan starting signal and detect whether the fan is overloaded; the overload frequency detection module 302 is configured to detect the overload frequency of the fan if the overload frequency of the fan is detected; the defrosting detection module 303 is configured to accumulate the number of times of fan overload if detecting that the fan is overloaded; if the fan overload times are smaller than a preset threshold value, recording the defrosting and heating time of the fan after the fan is started for the last time and automatically starting the fan according to a preset flow; if the overload times of the fan reach a preset threshold value, calculating the defrosting heating accumulated time after the fan is started for the first time; the overload judging module 304 is configured to perform overload shutdown control on the unit based on a corresponding relationship between the accumulated defrosting and heating time and the overload of the fan.
Further, the overload determining module 301 includes: the defrosting device comprises a defrosting duration judging unit and a fan overload judging unit, wherein the defrosting duration judging unit is used for controlling the fan to defrost and shielding fan overload detection if the defrosting heating accumulated duration is longer than a first set time; the defrosting duration judging unit is used for controlling the fan to stop if the defrosting heating accumulated duration is less than a first set time; and the fan overload judging unit is used for finishing defrosting, detecting whether the fan is overloaded again, and controlling the unit to stop if the fan overload duration is detected to reach a second set time.
Further, the defrosting detection module 303 is further configured to calculate a defrosting heating accumulated time after the fan is turned on for the first time if the number of times of detecting that the fan is overloaded reaches a preset threshold value within a third set time.
Further, the overload number detection module 302 includes: the system comprises an overload stop control unit, a restart overload judgment unit and an overload frequency acquisition unit; the overload stop control unit is used for controlling the fan to stop if detecting that the fan is overloaded; the restarting overload judging unit is used for restarting the fan after the fourth set time, and detecting whether the fan is overloaded again after the fifth set time; the restarting overload judging unit is used for judging that the fault is eliminated and controlling the unit to restart if the fan state is continuously detected to be normal in a sixth set time period; and the overload frequency acquisition unit is used for repeating the steps of restarting the fan and detecting the overload of the fan if the fan is detected to be overloaded again in a sixth set time period, and accumulating the overload frequency of the fan.
Further, the method also comprises the following steps: the fan overload detection module is used for receiving a fan starting signal and detecting whether a fan overload switch is disconnected or not; if the overload switch is detected to be closed, judging that the state of the fan is normal; and if the detected fan overload switch disconnection time reaches the second set time, judging that the fan is overloaded.
Further, the method also comprises the following steps: the unit shutdown control module is used for controlling the heat pump system compressor to be closed; controlling the fan to delay the closing of the press; and controlling the water pump to keep an opening state.
Further, the method also comprises the following steps: the fan starting detection module is used for receiving a fan starting signal and judging whether the fan is started for a seventh set time; and if the fan is started for the seventh set time, detecting whether the fan is overloaded or not.
The defrosting heating accumulated time is used as a judgment basis for fan overload protection control, when the fan overload frequency reaches a preset threshold value, the defrosting heating accumulated time is judged, whether the fan is overloaded due to fan frosting is judged, and the fan is effectively and timely protected when the fan is overloaded, so that the fan is prevented from being irreversibly damaged; the frequency and the probability of overloading of the fan can be effectively reduced, and the service life of the fan is prolonged.
The fan overload protection control device provided by the embodiment of the application can be used for executing the fan overload protection control method provided by the embodiment, and has corresponding functions and beneficial effects.
The embodiment of the application also provides computer equipment which can integrate the fan overload protection control device provided by the embodiment of the application. Fig. 5 is a schematic structural diagram of a computer device according to an embodiment of the present application. Referring to fig. 5, the computer apparatus includes: an input device 43, an output device 44, a memory 42, and one or more processors 41; the memory 42 for storing one or more programs; when the one or more programs are executed by the one or more processors 41, the one or more processors 41 are enabled to implement the fan overload protection control method provided in the above embodiment. Wherein the input device 43, the output device 44, the memory 42 and the processor 41 may be connected by a bus or other means, for example, in fig. 4.
The processor 40 executes various functional applications and data processing of the device by running software programs, instructions and modules stored in the memory 41, that is, the fan overload protection control method is implemented.
The computer equipment can be used for executing the fan overload protection control method provided by the embodiment, and has corresponding functions and beneficial effects.
The embodiment of the present application further provides a storage medium containing computer executable instructions, where the computer executable instructions are executed by a computer processor to perform a wind turbine overload protection control method, where the wind turbine overload protection control method includes: receiving a fan starting signal, and detecting whether the fan is overloaded or not; if the fan is detected to be overloaded, accumulating the number of times of the fan overload; if the fan overload times are smaller than a preset threshold value, recording the defrosting and heating time of the fan after the fan is started for the last time and automatically starting the fan according to a preset flow; if the overload times of the fan reach a preset threshold value, calculating the defrosting heating accumulated time after the fan is started for the first time; and performing overload shutdown control on the fan based on the corresponding relation between the defrosting and heating accumulated time and the overload of the fan.
Storage medium-any of various types of memory devices or storage devices. The term "storage medium" is intended to include: mounting media such as CD-ROM, floppy disk, or tape devices; computer system memory or random access memory such as DRAM, DDR RAM, SRAM, EDO RAM, Lanbas (Rambus) RAM, etc.; non-volatile memory such as flash memory, magnetic media (e.g., hard disk or optical storage); registers or other similar types of memory elements, etc. The storage medium may also include other types of memory or combinations thereof. In addition, the storage medium may be located in a first computer system in which the program is executed, or may be located in a different second computer system connected to the first computer system through a network (such as the internet). The second computer system may provide program instructions to the first computer for execution. The term "storage medium" may include two or more storage media that may reside in different locations, such as in different computer systems that are connected by a network. The storage medium may store program instructions (e.g., embodied as a computer program) that are executable by one or more processors.
Of course, the storage medium containing the computer executable instructions provided in the embodiments of the present application is not limited to the above-mentioned fan overload protection control method, and may also perform related operations in the fan overload protection control method provided in any embodiment of the present application.
The fan overload protection control device, the storage medium, and the computer device provided in the foregoing embodiments may execute the fan overload protection control method provided in any embodiment of the present application, and refer to the fan overload protection control method provided in any embodiment of the present application without detailed technical details described in the foregoing embodiments.
The foregoing is considered as illustrative of the preferred embodiments of the invention and the technical principles employed. The present application is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present application has been described in more detail with reference to the above embodiments, the present application is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present application, and the scope of the present application is determined by the scope of the claims.
Claims (10)
1. A fan overload protection control method is characterized by comprising the following steps:
receiving a fan starting signal, and detecting whether the fan is overloaded or not;
if the fan is detected to be overloaded, accumulating the number of times of the fan overload;
if the fan overload times are smaller than a preset threshold value, recording the defrosting and heating time of the fan after the fan is started for the last time and automatically starting the fan according to a preset flow;
if the overload times of the fan reach a preset threshold value, calculating the defrosting heating accumulated time after the fan is started for the first time;
and performing overload shutdown control on the unit based on the corresponding relation between the defrosting and heating accumulated time and the overload of the fan.
2. The fan overload protection control method according to claim 1, wherein the controlling the fan based on the corresponding relationship between the defrosting and heating accumulated time and the fan overload includes:
if the defrosting heating accumulated time is longer than the first set time, controlling the fan to defrost and shielding the fan from overload detection;
after defrosting is finished, whether the fan is overloaded or not is detected again, and if the fan overload duration is detected to reach a second set time, the unit is controlled to stop;
and if the defrosting and heating accumulated time is less than the first set time, controlling the unit to stop.
3. The fan overload protection control method according to claim 1, wherein if the number of times of the fan overload reaches a preset threshold, calculating a cumulative defrosting and heating time after the fan is turned on for the first time, includes:
and if the overload times of the fan are detected to reach a preset threshold value within the third set time, calculating the defrosting heating accumulated time after the fan is started for the first time.
4. The fan overload protection control method according to claim 1, wherein if the fan overload is detected, accumulating the number of the fan overload times includes:
if the fan is detected to be overloaded, controlling the fan to stop;
automatically restarting the fan after the fourth set time, and detecting whether the fan is overloaded again after the fifth set time;
if the fan state is detected to be normal continuously in the sixth set time period, judging that the fan fault is eliminated, and controlling the unit to restart;
and if the fan overload is detected again in the sixth set time period, repeating the steps of restarting the fan and detecting the fan overload, and accumulating the fan overload times.
5. The fan overload protection control method according to any one of claims 1 to 4, wherein the detecting of the fan overload includes:
receiving a fan starting signal, and detecting whether a fan overload switch is disconnected or not;
if the overload switch is detected to be closed, judging that the state of the fan is normal;
and if the detected fan overload switch disconnection time reaches the second set time, judging that the fan is overloaded.
6. The fan overload protection control method according to claim 2 or 4, wherein the control unit is shut down and comprises the following steps:
controlling the heat pump system compressor to be closed;
controlling the fan to delay the closing of the press;
and controlling the water pump to keep an opening state.
7. The fan overload protection control method according to claim 1, wherein the receiving a fan turn-on signal and detecting whether the fan is overloaded comprises:
receiving a fan starting signal, and judging whether the fan is started for a seventh set time;
and if the fan is started for the seventh set time, detecting whether the fan is overloaded or not.
8. The utility model provides a fan overload protection controlling means which characterized in that includes:
the overload detection module is used for receiving a fan starting signal and detecting whether the fan is overloaded or not;
the overload frequency detection module is used for detecting the overload of the fan and detecting the overload frequency of the fan;
the defrosting detection module is used for accumulating the overload times of the fan if the fan is detected to be overloaded; if the fan overload times are smaller than a preset threshold value, recording the defrosting and heating time of the fan after the fan is started for the last time and automatically starting the fan according to a preset flow; if the overload times of the fan reach a preset threshold value, calculating the defrosting heating accumulated time after the fan is started for the first time;
and the overload judging module is used for carrying out overload shutdown control on the fan based on the corresponding relation between the defrosting and heating accumulated time and the overload of the fan.
9. A computer device, comprising: a memory and one or more processors;
the memory for storing one or more programs;
when the one or more programs are executed by the one or more processors, the one or more processors are enabled to implement a wind turbine overload protection control method according to any one of claims 1 to 7.
10. A storage medium containing computer executable instructions, wherein the computer executable instructions when executed by a computer processor are configured to perform a wind turbine overload protection control method according to any one of claims 1 to 7.
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| CN112555179B (en) | 2022-07-08 |
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