CN110631208A - Operation control method, operation control device, air conditioning system, and storage medium - Google Patents
Operation control method, operation control device, air conditioning system, and storage medium Download PDFInfo
- Publication number
- CN110631208A CN110631208A CN201910944082.8A CN201910944082A CN110631208A CN 110631208 A CN110631208 A CN 110631208A CN 201910944082 A CN201910944082 A CN 201910944082A CN 110631208 A CN110631208 A CN 110631208A
- Authority
- CN
- China
- Prior art keywords
- temperature difference
- temperature
- operation control
- air
- defrosting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 51
- 238000004378 air conditioning Methods 0.000 title claims abstract description 39
- 238000010257 thawing Methods 0.000 claims abstract description 71
- 230000008569 process Effects 0.000 claims abstract description 9
- 230000008859 change Effects 0.000 claims description 60
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000012937 correction Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 17
- 238000010438 heat treatment Methods 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 12
- 238000004590 computer program Methods 0.000 description 11
- 238000004364 calculation method Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Images
Classifications
-
- 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
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an operation control method, an operation control device, an air conditioning system and a storage medium, wherein the operation control method comprises the following steps: detecting the variation trend of the temperature difference according to the temperature difference between the air supply temperature and the air return temperature detected at different moments in the operation process of at least one indoor unit; determining that the temperature difference enters an attenuation state according to the variation trend; and controlling the outdoor unit to perform defrosting operation when the relation between the attenuation rate of the temperature difference and the working condition parameters of the outdoor unit is detected to meet the defrosting condition. According to the technical scheme, the frosting condition of the air conditioning system can be accurately judged, so that the detection precision of the time when the defrosting operation is started is improved, the reliability of the defrosting operation on the outdoor unit and the defrosting efficiency are improved, and further, the use experience of a user is improved through defrosting with frost and continuous heating without frost.
Description
Technical Field
The invention relates to the technical field of air conditioner control, in particular to an operation control method, an operation control device, an air conditioner system and a computer readable storage medium.
Background
In the related art, the air conditioner is controlled to perform defrosting operation by performing timing or determining and judging the temperature of the outdoor heat exchanger pipe, and the following defects exist:
there is a large probability of misjudgment, and when defrosting is performed under the condition of no frost, the heating capacity of the air conditioner system is affected, and the comfort of the user is further affected.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, it is an object of the present invention to provide an operation control method.
Another object of the present invention is to provide an operation control device.
Another object of the present invention is to provide an air conditioning system.
It is another object of the present invention to provide a computer-readable storage medium.
In order to achieve the above object, according to an embodiment of a first aspect of the present invention, there is provided an operation control method including: detecting the variation trend of the temperature difference according to the temperature difference between the air supply temperature and the air return temperature detected at different moments in the operation process of at least one indoor unit; determining that the temperature difference enters an attenuation state according to the variation trend; and controlling the outdoor unit to perform defrosting operation when the relation between the attenuation rate of the temperature difference and the working condition parameters of the outdoor unit is detected to meet the defrosting condition.
In the technical scheme, the change trend of the temperature difference is determined based on the temperature difference between the air supply temperature and the return air temperature detected at different moments, the change trend of the temperature difference is memorized to determine whether the temperature difference is in an attenuation state or not, after the attenuation state is generated, the relation between the detected temperature difference attenuation rate and the working condition parameters of the outdoor unit is further stepped, so that the defrosting condition is met, the control unit is controlled to enter a defrosting mode, whether defrosting is executed or not is determined by detecting the attenuation rate of the temperature difference, compared with a defrosting detection scheme in the related art, the comparison reference of the temperature difference attenuation rate is dynamically determined by combining the working condition parameters of the outdoor unit, and when defrosting operation is started, the defrosting condition of the air conditioning system can be accurately judged, so as to improve the detection precision when defrosting is started, and further improve the reliability and defrosting efficiency of the outdoor unit for executing the defrosting operation, furthermore, the frost is dissolved, and the frostless continuous heating can improve the use experience of the user.
Among them, as can be understood by those skilled in the art, the defrosting operation is performed by the heating mode for an operation that needs to be performed after a certain period of time, and thus the supply air temperature is generally higher than the return air temperature, and thus the temperature difference is generally a positive value, and the change tendency is determined by detecting the change of the temperature difference.
The air conditioning system can be an air conditioner consisting of one indoor unit and one outdoor unit, and can also be a multi-connected air conditioning system consisting of the outdoor unit and a plurality of indoor units.
In addition, the temperature difference between the air supply temperature and the air return temperature of each indoor unit can be calculated after the heating starting operation or the defrosting is finished for 15 min.
In above-mentioned technical scheme, according to the difference in temperature between the supply air temperature that detects at different moments and return air temperature, detect the trend of change of difference in temperature, specifically include: for any indoor unit in an operating state, detecting the temperature difference between the air supply temperature and the air return temperature, and recording as a reference temperature difference; for at least one indoor unit, determining an average temperature difference of at least one reference temperature difference; and determining the change trend according to the relative relation of the average temperature difference determined at different moments.
In this technical scheme, if the quantity of indoor set is 1, then regard the reference difference in temperature between the supply air temperature of this indoor set and the return air temperature as average temperature difference, if the quantity of indoor set has a plurality ofly, then calculate the average temperature difference of a plurality of reference temperature differences, specifically, the formula of calculating average temperature difference can be:
ΔT＝(ΔT1+ΔT2+…+ΔTn)/n
here, 1, 2, …, n can be regarded as the number of indoor units.
In any one of the above technical solutions, detecting a reference temperature difference between an air supply temperature and a return air temperature for any indoor unit in an operating state specifically includes: detecting whether a wind shield corresponding to the air supply temperature is a reference wind shield; if so, determining the temperature signal actually collected at the air supply port as the air supply temperature; if not, the temperature signal is corrected according to the actual wind gear, the corrected temperature signal is determined as the air supply temperature, and the reference temperature difference is determined according to the air supply temperature and the return air temperature.
In the technical scheme, for a one-in-one type air conditioner, whether temperature signals are corrected or not is determined according to the air supply temperature collected at different moments based on the relation between the actual wind gear and the reference wind gear, and the reference temperature difference is determined based on the influence of the same wind gear on the air outlet temperature, so that the detection precision of the reference temperature difference is improved, the detection precision of the attenuation state is further improved, and finally the configuration precision of when the defrosting operation is started is improved.
Aiming at a multi-connected air conditioning system comprising a plurality of indoor units, in order to ensure that the temperature difference can accurately reflect the heating capacity of the indoor units, when the reference temperature difference of the plurality of indoor units is synchronously detected, the influence of different wind shelves on the air outlet temperature by different indoor units needs to be considered, for example, aiming at the same heating capacity, the air outlet temperature corresponding to a high wind shelf is lower than the air outlet temperature corresponding to a low wind shelf, therefore, through presetting the reference wind shelf, whether the indoor unit operates according to the reference wind shelf or not is detected, if the indoor unit does not operate according to the reference wind shelf, the actually acquired temperature signal is corrected, and the reliability and the accuracy based on the temperature difference reaction change trend are improved.
In any one of the above technical solutions, the correcting the temperature signal according to the actual windshield so as to determine the corrected temperature signal as the air supply temperature specifically includes: if the actual wind gear is lower than the reference wind gear, correcting the temperature signal for cooling; and if the actual wind gear is higher than the reference wind gear, performing temperature rise correction operation on the temperature signal.
Specifically, if the reference wind level is a high wind level, the outlet air temperature T2o, T2H, T2M-3 ℃, T2L-5 ℃ (T2H is the air supply temperature of the high wind level, T2M is the air supply temperature of the medium wind level, and T2L is the air supply temperature of the low wind level), and the air supply temperatures in different wind levels are corrected so as to perform unified calculation.
If the reference wind grade is low, T2 o-T2L-T2M + 3-T2L +5 deg.C
If the reference wind gear is the middle wind gear, the logic is the same as above.
In any one of the above technical solutions, determining that the temperature difference enters the attenuation state according to the variation trend specifically includes: and if the detected average temperature differences are smaller than the specified average temperature difference after the specified average temperature difference is detected, determining that the change trend enters a decay state from the moment when the specified average temperature difference is detected, wherein the maximum value between the specified average temperature difference and at least one average temperature difference detected before the specified average temperature difference is determined as the maximum average temperature difference.
In the technical scheme, the designated average temperature difference is a turning point at which the change trend of the temperature difference is converted into the attenuation state, so that the temperature difference is determined to enter the attenuation state after the designated average temperature is determined by continuously calculating the average temperature at different moments, and the condition that the outdoor unit heat exchanger begins to frost is indicated.
Typically, the specified average temperature difference is the maximum average temperature difference.
In any one of the above technical solutions, the method further includes: and configuring the attenuation rate of the temperature difference according to the maximum average temperature difference and the reference average temperature difference, wherein the average temperature difference detected after the average temperature difference is specified is recorded as the reference average temperature difference.
In any of the above technical solutions, configuring the attenuation rate of the temperature difference according to the maximum average temperature difference and the reference average temperature difference specifically includes: and configuring the attenuation rate of the temperature difference according to the difference between the maximum average temperature difference and the reference average temperature difference and the proportional relation of the maximum average temperature difference.
Specifically, a temperature difference attenuation rate formula is constructed according to a difference value between the maximum average temperature difference and the reference average temperature difference and a proportional relation with the maximum average temperature difference, wherein the temperature difference attenuation rate formula is as follows:
In the technical scheme, the attenuation rate of the temperature difference is calculated based on the maximum average temperature difference and the reference average temperature difference detected after the maximum average temperature difference, so that the reliability of the calculation of the attenuation rate is ensured.
In addition, as can be understood by those skilled in the art, the temperature difference between the supply air temperature and the return air temperature is continuously performed based on a specified detection frequency to obtain a reference average temperature difference, so that the attenuation rate of the temperature difference is also updated synchronously or in a delayed manner according to the detection frequency, and since the value of the reference average temperature difference is smaller and smaller after the outdoor heat exchanger frosts, the attenuation rate is higher and higher.
In any one of the above technical solutions, detecting that a relationship between an attenuation rate of a temperature difference and a working condition parameter of an outdoor unit satisfies a defrosting condition, and controlling to perform a defrosting operation on the outdoor unit specifically includes: the working condition parameters comprise working condition temperature and working condition duration, and a corresponding first reference change rate is configured according to the working condition temperature; if the attenuation rate of the detected temperature difference is greater than or equal to the first reference change rate, triggering to start recording the working condition duration; and if the detected running time is greater than or equal to the time threshold, determining that a defrosting condition is met, and executing defrosting operation on the outdoor unit.
In any one of the above technical solutions, specifically, the corresponding first reference change rate is configured according to the detected outdoor environment temperature.
In the technical scheme, whether defrosting is entered or not is determined by combining a first reference change rate with a smaller value and time detection.
In addition, different outdoor environments have different influences on frosting, and the corresponding first reference change rate is determined by detecting the outdoor temperature, so that the accuracy of starting and executing frosting operation is improved, and the defrosting efficiency is improved.
Further, by setting a time length threshold, when the attenuation rate is detected to be greater than or equal to the first reference change rate maintaining time length and greater than or equal to the time length threshold, it is indicated that the defrosting operation needs to be started, so that the starting accuracy of the defrosting operation is ensured, and the influence of the defrosting operation on the use of a user is reduced.
In any one of the above technical solutions, detecting that a relationship between an attenuation rate of a temperature difference and a working condition parameter of an outdoor unit satisfies a defrosting condition, and controlling to perform a defrosting operation on the outdoor unit specifically includes: configuring a corresponding second reference change rate according to the working condition temperature of the outdoor unit; and if the change rate of the temperature difference is detected to be greater than or equal to the second reference change rate, determining that a defrosting condition is met, and performing defrosting operation on the outdoor unit.
In any of the above technical solutions, specifically, the corresponding second reference change rate is configured according to the detected outdoor environment temperature.
In the technical scheme, only the second reference change rate with a larger value can be set to detect to determine whether defrosting is entered.
In any one of the above technical solutions, the method further includes: monitoring that a designated indoor unit executes a wind gear switching operation, and not detecting the air supply temperature and the air return temperature of the designated indoor unit within a designated time period after the switching operation; the air conditioning system is a multi-split air conditioning system, and monitors that the appointed indoor unit executes the startup operation, and the appointed indoor unit does not detect the supply air temperature and the return air temperature within the appointed time period which passes from the startup time.
In the technical scheme, when the wind gear is switched or an internal machine is increased or decreased to be started in a multi-split air conditioner, the operation parameters in the system fluctuate to cause misjudgment, so that the recorded data do not participate in judgment within 5min under the condition.
In any one of the above technical solutions, the method further includes: and if at least one of power failure, shutdown, operation mode conversion and fault protection shutdown occurs to the air conditioning system, resetting the recorded attenuation rate of the temperature difference.
In the technical scheme, if a power failure, a shutdown, a switching mode and a fault protection shutdown lamp occur in the running process of the machine, the data is cleared, and calculation judgment is recorded again.
According to an aspect of the second aspect of the present invention, there is provided an operation control device including: a memory and a processor; a memory for storing program code; the processor is used for calling the program code to execute the operation control method provided by any technical scheme in the first aspect of the invention.
The operation control device provided by the present invention includes a processor that can realize the steps defined in the operation control method according to any one of the first aspect when executing the computer program, and therefore, all the advantageous effects of the operation control method are provided, and are not described herein.
According to a third aspect of the present invention, there is also provided an air conditioning system, comprising: the operation control device for an air conditioner according to the second aspect of the present invention is described above.
The air conditioning system can be an air conditioner consisting of one indoor unit and one outdoor unit, and can also be a multi-connected air conditioning system consisting of the outdoor unit and a plurality of indoor units.
According to an aspect of the fourth aspect of the present invention, there is also provided a computer-readable storage medium, on which a computer program is stored, the computer program, when executed, implementing the operation control method defined in any one of the above aspects.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 shows a schematic flow diagram of an operation control method according to an embodiment of the invention;
FIG. 2 shows a schematic flow diagram of an operation control method according to another embodiment of the invention;
FIG. 3 shows a schematic flow diagram of an operation control method according to another embodiment of the invention;
fig. 4 shows a schematic block diagram of an operation control device according to an embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The operation control method defined by the application is suitable for an air conditioning system, and the air conditioning system can comprise a single outdoor unit and a plurality of indoor units, or the single outdoor unit and the single indoor unit, or the plurality of outdoor units and the plurality of indoor units.
As shown in fig. 1, an operation control method according to an embodiment of the present invention includes:
and 102, detecting the change trend of the temperature difference according to the temperature difference between the air supply temperature and the air return temperature detected at different moments in the running process of at least one indoor unit.
The temperature difference detection method comprises the steps of detecting the temperature difference between the air supply temperature and the air return temperature at different moments, determining the change trend of the temperature difference, memorizing the change trend of the temperature difference, and determining whether the temperature difference is in an attenuation state or not.
Further, the temperature difference between the air supply temperature and the return air temperature of each indoor unit can be calculated after heating starting operation or defrosting is finished for 15 min.
Step 102, specifically comprising: step 202, detecting a reference temperature difference between an air supply temperature and an air return temperature for any indoor unit in a running state; step 204, determining an average temperature difference of at least one reference temperature difference for at least one indoor unit; step 206, determining a variation trend according to the relative relationship of the average temperature differences determined at different moments, as shown in fig. 2.
In this embodiment, if the number of the indoor units is 1, a reference temperature difference between the supply air temperature and the return air temperature of the indoor unit is taken as an average temperature difference, and if the number of the indoor units is multiple, an average temperature difference of the multiple reference temperature differences is calculated, specifically, the average temperature difference may be calculated as:
ΔT＝(ΔT1+ΔT2+…+ΔTn)/n
here, 1, 2, …, n can be regarded as the number of indoor units.
Step 202, specifically comprising: detecting whether a wind shield corresponding to the air supply temperature is a reference wind shield; if so, determining the temperature signal actually collected at the air supply port as the air supply temperature; if not, the temperature signal is corrected according to the actual wind gear, the corrected temperature signal is determined as the air supply temperature, and the reference temperature difference is determined according to the air supply temperature and the return air temperature.
Specifically, for a one-in-one air conditioner, whether temperature signals are corrected or not is determined according to the air supply temperature acquired at different moments based on the relation between an actual wind gear and a reference wind gear, and a reference temperature difference is determined based on the influence of the same wind gear on the air outlet temperature so as to improve the detection precision of the reference temperature difference, further improve the detection precision of an attenuation state and finally improve the configuration precision of when defrosting operation is started.
Aiming at a multi-connected air conditioning system comprising a plurality of indoor units, in order to ensure that the temperature difference can accurately reflect the heating capacity of the indoor units, when the reference temperature difference of the plurality of indoor units is synchronously detected, the influence of different wind shelves on the air outlet temperature by different indoor units needs to be considered, for example, aiming at the same heating capacity, the air outlet temperature corresponding to a high wind shelf is lower than the air outlet temperature corresponding to a low wind shelf, therefore, through presetting the reference wind shelf, whether the indoor unit operates according to the reference wind shelf or not is detected, if the indoor unit does not operate according to the reference wind shelf, the actually acquired temperature signal is corrected, and the reliability and the accuracy based on the temperature difference reaction change trend are improved.
Specifically, the correcting the temperature signal according to the actual windshield to determine the corrected temperature signal as the supply air temperature includes: if the actual wind gear is lower than the reference wind gear, correcting the temperature signal for cooling; and if the actual wind gear is higher than the reference wind gear, performing temperature rise correction operation on the temperature signal.
Specifically, if the reference wind level is a high wind level, the outlet air temperature T2o, T2H, T2M-3 ℃, T2L-5 ℃ (T2H is the air supply temperature of the high wind level, T2M is the air supply temperature of the medium wind level, and T2L is the air supply temperature of the low wind level), and the air supply temperatures in different wind levels are corrected so as to perform unified calculation.
If the reference wind grade is low, T2 o-T2L-T2M + 3-T2L +5 deg.C
If the reference wind gear is the middle wind gear, the logic is the same as above.
And 104, determining that the temperature difference enters a decay state according to the change trend.
Wherein, step 104 specifically includes: and if the detected average temperature differences are smaller than the specified average temperature difference after the specified average temperature difference is detected, determining that the change trend enters a decay state from the moment when the specified average temperature difference is detected, wherein the maximum value between the specified average temperature difference and at least one average temperature difference detected before the specified average temperature difference is determined as the maximum average temperature difference.
In this embodiment, the average temperature difference is designated as a turning point at which the variation trend of the temperature difference is converted into the attenuation state, and thus, the average temperature at different times is continuously calculated to determine that the temperature difference enters the attenuation state after the designated average temperature is determined, which indicates that the outdoor unit heat exchanger starts to frost.
Typically, the specified average temperature difference is the maximum average temperature difference.
Before step 106 is executed, the method further includes: and configuring the attenuation rate of the temperature difference according to the maximum average temperature difference and the reference average temperature difference, wherein the average temperature difference detected after the average temperature difference is specified is recorded as the reference average temperature difference.
In any of the above embodiments, configuring the attenuation rate of the temperature difference according to the maximum average temperature difference and the reference average temperature difference specifically includes: and configuring the attenuation rate of the temperature difference according to the difference between the maximum average temperature difference and the reference average temperature difference and the proportional relation of the maximum average temperature difference.
Specifically, according to the difference between the maximum average temperature difference and the reference average temperature difference, the temperature difference attenuation rate of the temperature difference attenuation rate formula is constructed according to the proportional relation of the maximum average temperature difference, wherein the temperature difference attenuation rate formula is as follows:
Δ Ti% is the temperature difference decay rate, Δ Ti (max is the maximum average temperature difference, Δ Ti is the reference average temperature difference).
In this embodiment, the reliability of the decay rate calculation is ensured by calculating the decay rate of the temperature difference based on the maximum average temperature difference and the reference average temperature difference detected thereafter.
In addition, as can be understood by those skilled in the art, the temperature difference between the supply air temperature and the return air temperature is continuously performed based on a specified detection frequency to obtain a reference average temperature difference, so that the attenuation rate of the temperature difference is also updated synchronously or in a delayed manner according to the detection frequency, and since the value of the reference average temperature difference is smaller and smaller after the outdoor heat exchanger frosts, the attenuation rate is higher and higher.
And 106, detecting that the relation between the attenuation rate of the temperature difference and the working condition parameters of the outdoor unit meets the defrosting condition, and controlling to execute defrosting operation on the outdoor unit.
As an implementation manner of step 106, the method specifically includes: working condition parameters comprise working condition temperature and working condition duration, and step 302, configuring a corresponding first reference change rate according to the working condition temperature; step 304, if the attenuation rate of the temperature difference is detected to be greater than or equal to a first reference change rate, triggering to start recording the working condition duration; in step 306, if it is detected that the operation time length is greater than or equal to the time length threshold, it is determined that the defrosting condition is satisfied, so as to perform a defrosting operation on the outdoor unit, as shown in fig. 3.
In any of the above embodiments, in particular, the corresponding first reference rate of change is configured in accordance with the detected outdoor ambient temperature.
In this embodiment, a first reference rate of change with a smaller value is combined with the time detection to determine whether to enter defrosting.
In addition, different outdoor environments have different influences on frosting, and the corresponding first reference change rate is determined by detecting the outdoor temperature, so that the accuracy of starting and executing frosting operation is improved, and the defrosting efficiency is improved.
The duration threshold is greater than or equal to 40 min.
The corresponding relationship between the first reference change rate and the outdoor environment temperature can refer to table 1.
TABLE 1
Further, by setting a time length threshold, when the attenuation rate is detected to be greater than or equal to the first reference change rate maintaining time length and greater than or equal to the time length threshold, it is indicated that the defrosting operation needs to be started, so that the starting accuracy of the defrosting operation is ensured, and the influence of the defrosting operation on the use of a user is reduced.
As another embodiment of step 106, the method specifically includes: configuring a corresponding second reference change rate according to the working condition temperature of the outdoor unit; and if the change rate of the temperature difference is detected to be greater than or equal to the second reference change rate, determining that a defrosting condition is met, and performing defrosting operation on the outdoor unit.
In any of the above embodiments, in particular, the corresponding second reference rate of change is configured in accordance with the detected outdoor ambient temperature.
In this embodiment, it is also possible to detect to determine whether to enter defrosting by setting only the second reference change rate of which the value is large.
In this embodiment, after the attenuation state occurs, if the relationship between the detected temperature difference attenuation rate and the operating condition parameters of the outdoor unit meets the defrosting condition, the outdoor unit is controlled to enter the defrosting mode, and whether defrosting is to be performed is determined by detecting the attenuation rate of the temperature difference.
Among them, as can be understood by those skilled in the art, the defrosting operation is performed by the heating mode for an operation that needs to be performed after a certain period of time, and thus the supply air temperature is generally higher than the return air temperature, and thus the temperature difference is generally a positive value, and the change tendency is determined by detecting the change of the temperature difference.
The air conditioning system can be an air conditioner consisting of one indoor unit and one outdoor unit, and can also be a multi-connected air conditioning system consisting of the outdoor unit and a plurality of indoor units.
Further, in the detection of the attenuation rate, the following operations may also be performed for a single indoor unit.
In any of the above embodiments, further comprising: monitoring that a designated indoor unit executes a wind gear switching operation, and not detecting the air supply temperature and the air return temperature of the designated indoor unit within a designated time period after the switching operation; the air conditioning system is a multi-split air conditioning system, and monitors that the appointed indoor unit executes the startup operation, and the appointed indoor unit does not detect the supply air temperature and the return air temperature within the appointed time period which passes from the startup time.
In this embodiment, when a gear shift occurs, or when an internal machine is turned on in an increasing or decreasing manner in a multi-split air conditioner, the operating parameters in the system fluctuate, which leads to erroneous determination, so that the recorded data does not participate in the determination within 5min when the above conditions occur.
Further, in the process of detecting the decay rate, the following operations may also be performed on the air conditioning system.
In any of the above embodiments, further comprising: and if at least one of power failure, shutdown, operation mode conversion and fault protection shutdown occurs to the air conditioning system, resetting the recorded attenuation rate of the temperature difference.
In the embodiment, if a power failure, a shutdown, a switching mode and a fault protection shutdown lamp occur in the running process of the machine, the data is cleared, and the calculation judgment is recorded again.
As shown in fig. 4, the operation control device 40 according to the embodiment of the present invention is characterized by comprising: a memory 402 and a processor 404.
A memory 402 for storing program code; the processor 404 is configured to call a program code to execute the operation control method of the air conditioner according to any of the embodiments.
An air conditioning system according to an embodiment of the present invention includes the operation control device 40 described in the above embodiment.
Example one
If the air conditioning system can be an air conditioner with one air conditioner, the average temperature difference is the reference temperature difference of the air conditioner, and the variation trend is determined according to the relative relation of the reference temperature differences determined at different moments.
If the detected reference temperature differences are smaller than the designated reference temperature difference after the designated reference temperature difference is detected, determining that the change trend enters the attenuation state from the moment when the designated reference temperature difference is detected.
And after entering the attenuation state, determining a smaller first reference change rate according to the outdoor environment temperature, and if the attenuation rate of the detected temperature difference is greater than or equal to the first reference change rate, and the working condition duration is continuously detected to be greater than or equal to a duration threshold, triggering to execute defrosting operation. Or
And after entering the attenuation state, determining a second larger reference change rate according to the outdoor environment temperature, and triggering to execute defrosting operation if the attenuation rate of the temperature difference is detected to be greater than or equal to the second reference change rate.
In addition, in the process of calculating the reference temperature difference, whether the temperature signal is corrected or not is determined by the air supply temperature acquired at different moments based on the relation between the actual wind shield and the reference wind shield, so that the reference temperature difference is determined based on the influence of the same wind shield on the air outlet temperature, the detection precision of the reference temperature difference is improved, the detection precision of the attenuation state is further improved, and the configuration precision of when the defrosting operation is started is finally improved.
Based on the above embodiment, the on-time entering of the defrosting operation of the air conditioner is realized.
Example two
The air conditioning system can also be a multi-connected air conditioning system, and the multi-connected air conditioning system comprises an outdoor unit and a plurality of indoor units.
At any moment, after the reference temperature difference between the air supply temperature and the air return temperature of each indoor unit is detected, accumulating the reference temperature differences, and dividing the reference temperature differences by the number of the indoor units to obtain the average temperature difference.
Determining a change trend based on the average temperature difference determined at a plurality of moments, determining that the temperature difference enters an attenuation state according to the change trend, determining a first smaller reference change rate according to the outdoor environment temperature, and triggering to execute defrosting operation if the working condition time length is continuously detected to be greater than or equal to a time length threshold value after the attenuation rate of the temperature difference is detected to be greater than or equal to the first reference change rate. Or
And after entering the attenuation state, determining a second larger reference change rate according to the outdoor environment temperature, and triggering to execute defrosting operation if the attenuation rate of the temperature difference is detected to be greater than or equal to the second reference change rate.
The multi-connected air conditioning system comprises a plurality of indoor units, the heating capacity of the indoor units can be accurately reflected in order to guarantee temperature difference, when the reference temperature difference of the indoor units is synchronously detected, the influence of different wind shelves on the air outlet temperature is required to be considered when different indoor units are arranged, for example, the air outlet temperature corresponding to a high wind shelf is lower than the air outlet temperature corresponding to a low wind shelf aiming at the same heating capacity, therefore, the reference wind shelf is preset, whether the indoor units operate according to the reference wind shelf or not is detected, if the indoor units do not operate according to the reference wind shelf, the actually collected temperature signals are corrected, and the reliability and the accuracy based on the temperature difference reaction change trend are improved.
Based on the above embodiment, the multi-connected air conditioning system can enter the defrosting operation on time.
A computer-readable storage medium according to an embodiment of the invention, has stored thereon a computer program which, when executed, carries out the steps of the operation control method as defined in any one of the embodiments above.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made therein without departing from the scope of the invention as defined in the appended claims and their equivalents, and it is intended that the invention encompass such changes and modifications as well.
Claims (15)
1. An operation control method is suitable for an air conditioning system, the air conditioning system comprises an outdoor unit and at least one indoor unit, and the operation control method comprises the following steps:
detecting the variation trend of the temperature difference according to the temperature difference between the air supply temperature and the air return temperature detected at different moments in the running process of the at least one indoor unit;
determining that the temperature difference enters an attenuation state according to the change trend;
and controlling the outdoor unit to perform defrosting operation when detecting that the relation between the attenuation rate of the temperature difference and the working condition parameters of the outdoor unit meets a defrosting condition.
2. The operation control method according to claim 1, wherein the detecting a variation trend of the temperature difference according to the temperature difference between the supply air temperature and the return air temperature detected at different times specifically includes:
for any indoor unit in a running state, detecting the temperature difference between the air supply temperature and the air return temperature, and recording the temperature difference as a reference temperature difference;
for the at least one indoor unit, determining an average temperature difference of at least one reference temperature difference;
and determining the change trend according to the relative relation of the average temperature difference determined at different moments.
3. The operation control method according to claim 2, wherein the detecting a reference temperature difference between the supply air temperature and the return air temperature for any of the indoor units in the operating state specifically includes:
detecting whether a wind shield corresponding to the air supply temperature is a reference wind shield;
if so, determining the temperature signal actually collected at the air supply port as the air supply temperature;
if not, correcting the temperature signal according to the actual wind gear to determine the corrected temperature signal as the air supply temperature and determine the reference temperature difference according to the air supply temperature and the return air temperature.
4. The operation control method according to claim 3, wherein the correcting the temperature signal according to an actual windshield so as to determine the corrected temperature signal as the supply air temperature specifically includes:
if the actual wind level is lower than the reference wind level, performing correction operation of cooling the temperature signal;
and if the actual wind level is higher than the reference wind level, performing temperature rise correction operation on the temperature signal.
5. The operation control method according to claim 2, wherein the determining that the temperature difference enters the decay state according to the variation trend specifically includes:
determining that the trend of change enters the decay state from a time when a specified average temperature difference is detected if a plurality of the detected average temperature differences are smaller than the specified average temperature difference after the specified average temperature difference is detected,
wherein a maximum value between the specified average temperature difference and at least one of the average temperature differences detected before the specified average temperature difference is determined as a maximum average temperature difference.
6. The operation control method according to claim 5, characterized by further comprising:
configuring the attenuation rate of the temperature difference according to the maximum average temperature difference and the reference average temperature difference,
wherein the average temperature difference detected after the specified average temperature difference is recorded as the reference average temperature difference.
7. The operation control method according to claim 6, wherein the configuring the attenuation rate of the temperature difference according to the maximum average temperature difference and the reference average temperature difference specifically comprises:
and configuring the attenuation rate of the temperature difference according to the difference between the maximum average temperature difference and the reference average temperature difference and the proportional relation of the maximum average temperature difference.
8. The operation control method according to claim 7, wherein the detecting that the relation between the attenuation rate of the temperature difference and the operating condition parameter of the outdoor unit satisfies a defrosting condition controls a defrosting operation to be performed on the outdoor unit, and specifically includes:
the working condition parameters comprise working condition temperature and working condition duration, and a corresponding first reference change rate is configured according to the working condition temperature;
if the attenuation rate of the temperature difference is detected to be greater than or equal to the first reference change rate, triggering to start recording the working condition duration;
and if the running time is detected to be greater than or equal to a time threshold, determining that the defrosting condition is met, and executing defrosting operation on the outdoor unit.
9. The operation control method according to claim 7, wherein the detecting that the relation between the attenuation rate of the temperature difference and the operating condition parameter of the outdoor unit satisfies a defrosting condition controls a defrosting operation to be performed on the outdoor unit, and specifically includes:
configuring a corresponding second reference change rate according to the working condition temperature of the outdoor unit;
and if the change rate of the temperature difference is detected to be greater than or equal to the second reference change rate, determining that the defrosting condition is met, and performing defrosting operation on the outdoor unit.
10. The operation control method according to claim 8 or 9,
the working condition temperature is the outdoor environment temperature.
11. The operation control method according to any one of claims 1 to 9, characterized by further comprising:
monitoring that a designated indoor unit executes a wind gear switching operation, wherein the designated indoor unit does not detect the air supply temperature and the air return temperature within a designated time period after the switching operation;
the air conditioning system is a multi-split air conditioning system, and monitors that a specified indoor unit executes a starting operation, and the specified indoor unit does not detect the air supply temperature and the air return temperature within a specified time period after the starting time.
12. The operation control method according to any one of claims 1 to 9, characterized by further comprising:
and if the air conditioning system has at least one of power failure, shutdown, operation mode conversion and fault protection shutdown, resetting the recorded attenuation rate of the temperature difference.
13. An operation control device of an air conditioner is suitable for an air conditioning system, the air conditioning system comprises an outdoor unit and at least one indoor unit, and the operation control method comprises the following steps: the device comprises: a memory and a processor;
the memory for storing program code;
the processor, configured to invoke the program code to perform the method of any one of claims 1 to 12.
14. An air conditioning system, comprising:
the operation control device of an air conditioner as claimed in claim 13.
15. A computer-readable storage medium, on which an operation control program is stored, characterized in that the operation control program, when executed by a processor, implements the method of any one of claims 1 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910944082.8A CN110631208A (en) | 2019-09-30 | 2019-09-30 | Operation control method, operation control device, air conditioning system, and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910944082.8A CN110631208A (en) | 2019-09-30 | 2019-09-30 | Operation control method, operation control device, air conditioning system, and storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110631208A true CN110631208A (en) | 2019-12-31 |
Family
ID=68974943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910944082.8A Pending CN110631208A (en) | 2019-09-30 | 2019-09-30 | Operation control method, operation control device, air conditioning system, and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110631208A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793429A (en) * | 2010-02-26 | 2010-08-04 | 广东美的电器股份有限公司 | Intelligent defrosting control method of split air conditioner |
| JP2010197021A (en) * | 2009-02-27 | 2010-09-09 | Toshiba Corp | Temperature regulating device |
| KR20110028180A (en) * | 2009-09-11 | 2011-03-17 | 엘지전자 주식회사 | Air conditioner and control method |
| CN102759239A (en) * | 2012-07-18 | 2012-10-31 | 广东志高空调有限公司 | Defrosting method combining temperature change with current value change for air conditioner and controller thereof |
| CN102788461A (en) * | 2011-05-18 | 2012-11-21 | 珠海格力电器股份有限公司 | Intelligent defrosting method |
| CN104236005A (en) * | 2013-06-19 | 2014-12-24 | 广东美的集团芜湖制冷设备有限公司 | Defrost control method for air conditioners |
| CN105299843A (en) * | 2015-11-17 | 2016-02-03 | 广东美的制冷设备有限公司 | Method for controlling air conditioner to enter defrosting mode and air conditioner |
| CN106524445A (en) * | 2017-01-10 | 2017-03-22 | 美的集团武汉制冷设备有限公司 | Control method and system of air conditioner and air conditioner |
| CN110057046A (en) * | 2019-03-12 | 2019-07-26 | 青岛海尔空调电子有限公司 | Air conditioner and its defrosting control method |
-
2019
- 2019-09-30 CN CN201910944082.8A patent/CN110631208A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010197021A (en) * | 2009-02-27 | 2010-09-09 | Toshiba Corp | Temperature regulating device |
| KR20110028180A (en) * | 2009-09-11 | 2011-03-17 | 엘지전자 주식회사 | Air conditioner and control method |
| CN101793429A (en) * | 2010-02-26 | 2010-08-04 | 广东美的电器股份有限公司 | Intelligent defrosting control method of split air conditioner |
| CN102788461A (en) * | 2011-05-18 | 2012-11-21 | 珠海格力电器股份有限公司 | Intelligent defrosting method |
| CN102759239A (en) * | 2012-07-18 | 2012-10-31 | 广东志高空调有限公司 | Defrosting method combining temperature change with current value change for air conditioner and controller thereof |
| CN104236005A (en) * | 2013-06-19 | 2014-12-24 | 广东美的集团芜湖制冷设备有限公司 | Defrost control method for air conditioners |
| CN105299843A (en) * | 2015-11-17 | 2016-02-03 | 广东美的制冷设备有限公司 | Method for controlling air conditioner to enter defrosting mode and air conditioner |
| CN106524445A (en) * | 2017-01-10 | 2017-03-22 | 美的集团武汉制冷设备有限公司 | Control method and system of air conditioner and air conditioner |
| CN110057046A (en) * | 2019-03-12 | 2019-07-26 | 青岛海尔空调电子有限公司 | Air conditioner and its defrosting control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109812949B (en) | A load control method, device and air conditioner for a multi-compressor unit | |
| CN110285551B (en) | Control method and device of air conditioner, air conditioner and electronic equipment | |
| CN109737560B (en) | Air conditioner defrosting control method and device and air conditioner | |
| CN110567090A (en) | Air conditioner detection temperature compensation method and device, storage medium and air conditioner | |
| CN105318619B (en) | air conditioner defrosting control method and device | |
| CN106595152B (en) | Method and device for determining abnormal circulation of air conditioner refrigerant and air conditioner | |
| CN105276768B (en) | A kind of air-conditioner defrosting control method, control system and air-conditioning | |
| CN113357746A (en) | Electronic expansion valve abnormality detection control method and device, air conditioner and storage medium | |
| CN108518821B (en) | Control method and device of air conditioner | |
| CN108195026B (en) | Defrosting control method, control device, air conditioner and readable storage medium | |
| CN109798703B (en) | Heat pump unit and defrosting control method and device thereof | |
| CN114754461B (en) | Air conditioner control method, controller, air conditioner and storage medium | |
| CN108644971B (en) | Control method and device for defrosting of air conditioner, storage medium and processor | |
| CN105571222A (en) | Heat pump defrosting control method | |
| US20150377506A1 (en) | Management apparatus and method of managing air-conditioning apparatus | |
| CN112781287A (en) | Defrosting method and water heater | |
| CN114893866B (en) | Defrosting control method and device and air conditioner | |
| CN114061024A (en) | Control method and control device for defrosting of air conditioning system, controller and air conditioning system | |
| CN110454905B (en) | Control method and device of air conditioner, air conditioner and electronic equipment | |
| CN110081560B (en) | Method and device for adjusting running frequency of fan | |
| CN110779184A (en) | Operation control method and device, air conditioner and storage medium | |
| CN108332378B (en) | Control method and control device, storage medium and mobile air conditioner | |
| CN108800420B (en) | Control method and device of air conditioner | |
| CN114777284A (en) | Refrigerant-shortage protection method and device for air conditioner, storage medium and air conditioner | |
| CN110631208A (en) | Operation control method, operation control device, air conditioning system, and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191231 |
|
| RJ01 | Rejection of invention patent application after publication |