CN110686351A - Multi-split system and control method, device, equipment and storage medium thereof - Google Patents
Multi-split system and control method, device, equipment and storage medium thereof Download PDFInfo
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- 230000008569 process Effects 0.000 claims abstract description 19
- 230000002265 prevention Effects 0.000 claims abstract description 16
- 238000005057 refrigeration Methods 0.000 claims abstract description 16
- 238000004378 air conditioning Methods 0.000 claims description 49
- 238000001704 evaporation Methods 0.000 claims description 11
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew
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Abstract
The invention relates to a multi-split system and a control method, a control device, control equipment and a storage medium thereof, wherein the method comprises the following steps: when the operation load of the multi-split system in the refrigeration process is smaller than a preset load, judging whether the operation information of the multi-split system meets a preset anti-condensation condition; if the operation information of the multi-split system meets the preset anti-condensation condition, acquiring all temperature change rates of a refrigerating space of the multi-split system and the operation time of an operated indoor unit in the multi-split system; judging whether the operated indoor unit has a condensation risk or not according to all temperature change rates of the refrigerating space and the operation duration of the operated indoor unit; if the operated indoor unit has the condensation risk, the operation parameters of the operated indoor unit are adjusted according to a preset condensation prevention adjustment rule, so that the condensation risk of the operated indoor unit in the multi-split system is reduced when the operation load of the multi-split system is smaller than the preset load.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a multi-split air conditioner system, a control method, a control device, control equipment and a storage medium of the multi-split air conditioner system.
Background
The multi-split air conditioner system is widely applied to public places such as markets, hotels and office buildings at present, generally, the multi-split air conditioner system is large in installed capacity, large in design and installation freedom, and capable of freely opening any number of indoor units for use in practical use.
However, since the capacity of the outdoor unit of the multi-split air-conditioning system is usually ten times or even tens of times of the minimum indoor unit capacity, when only 1 or 2 small-capacity indoor units in the multi-split air-conditioning system operate, the output of the compressor of the outdoor unit is usually much greater than the refrigeration demand of the indoor units, and the indoor units are prone to have the problem of condensation.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a multi-split air conditioning system, a control method, a control device, a control apparatus, and a storage medium thereof, so as to solve the problem in the prior art that the output of a compressor of an outdoor unit is much greater than the refrigeration requirement of an indoor unit, and condensation is likely to occur in the indoor unit.
In order to achieve the above object, the present invention provides a method for controlling a multi-split system, including:
when the operation load of the multi-split system in the refrigeration process is smaller than a preset load, judging whether the operation information of the multi-split system meets a preset anti-condensation condition;
if the operation information of the multi-split system meets the preset anti-condensation condition, acquiring all temperature change rates of a refrigerating space of the multi-split system and the operation time of an operated indoor unit in the multi-split system;
judging whether the operated indoor unit has a condensation risk or not according to all temperature change rates of the refrigerating space and the operation duration of the operated indoor unit;
and if the operated indoor unit has the condensation risk, adjusting the operation parameters of the operated indoor unit according to a preset condensation prevention adjustment rule.
Further, in the method for controlling a multi-split system, the determining whether the operating indoor unit has a risk of condensation according to the temperature change rate of the refrigerating space and the operating duration of the operating indoor unit includes:
detecting whether all the temperature change rates are smaller than a preset change threshold value;
if all the temperature change rates are smaller than the preset change threshold value, detecting whether the running time of the running indoor unit is longer than the preset time;
and if the running time of the running indoor unit is longer than the preset time, judging that the running indoor unit has a condensation risk.
Further, the method for controlling a multi-split system further includes:
and if the all temperature change rate unevenness is smaller than the preset change threshold value, or the running time of the running indoor unit is not longer than the preset time, judging that the running indoor unit does not have condensation risk.
Further, in the control method of the multi-split system, the adjusting the operating parameters of the operated indoor unit according to a preset condensation prevention adjustment rule includes:
according to a preset first period and a preset speed increasing parameter, increasing the rotating speed of a fan of the operated indoor unit, wherein the highest value of the rotating speed of the fan is less than or equal to a preset rotating speed value; and/or
And according to a preset second period and a preset temperature rise value, increasing the evaporation superheat degree of the operated indoor unit, wherein the accumulated temperature rise value of the evaporation superheat degree is less than or equal to a preset temperature value.
Further, the method for controlling a multi-split system further includes:
and if the state of the running indoor unit is detected to be changed, exiting the anti-condensation mode corresponding to the anti-condensation condition.
Further, in the method for controlling a multi-split air-conditioning system, the operation information of the multi-split air-conditioning system includes an operation frequency of a compressor of an outdoor unit in the multi-split air-conditioning system and an operating wind speed in the multi-split air-conditioning system;
the anti-condensation condition comprises that the operation frequency of the compressor is reduced to a preset lowest operation frequency, and the wind speed of an operated indoor unit in the multi-split air-conditioning system is smaller than a preset wind speed.
The present invention also provides a control apparatus for a multi-split system, including:
the first judgment module is used for judging whether the operation information of the multi-split system meets a preset anti-condensation condition or not when the operation load of the multi-split system in the refrigeration process is smaller than a preset load;
the acquisition module is used for acquiring all temperature change rates of a refrigerating space of the multi-split system and the operation time of an operated indoor unit in the multi-split system if the operation information of the multi-split system meets a preset anti-condensation condition;
the second judgment module is used for judging whether the operated indoor unit has a condensation risk or not according to all temperature change rates of the refrigerating space and the operation duration of the operated indoor unit;
and the adjusting module is used for adjusting the operating parameters of the operated indoor unit according to a preset condensation prevention adjusting rule if the operated indoor unit has a condensation risk.
Further, in the control device of a multi-split system, the second determining module is specifically configured to:
detecting whether all the temperature change rates are smaller than a preset change threshold value;
if all the temperature change rates are smaller than the preset change threshold value, detecting whether the running time of the running indoor unit is longer than the preset time;
and if the running time of the running indoor unit is longer than the preset time, judging that the running indoor unit has a condensation risk.
Further, in the control device of the multi-split air conditioning system, the operation information of the multi-split air conditioning system includes an operation frequency of a compressor of an outdoor unit in the multi-split air conditioning system and an operating wind speed in the multi-split air conditioning system;
the anti-condensation condition comprises that the operation frequency of the compressor is reduced to a preset lowest operation frequency, and the wind speed of an operated indoor unit in the multi-split air-conditioning system is smaller than a preset wind speed.
The present invention also provides a control apparatus of a multi-split system, including: a processor and a memory;
the processor is connected with the memory:
the processor is used for calling and executing the program stored in the memory;
the memory is configured to store the program for executing at least the control method of the multi-split system as described in any one of the above.
The invention also provides a multi-split system, which is characterized in that the control equipment of the multi-split system is arranged.
The present invention also provides a storage medium characterized by having stored thereon a computer program that, when executed by a processor, implements the respective steps of the control method of a multi-split system as set forth in any one of the above.
According to the multi-split system and the control method, device, equipment and storage medium thereof, when the operation load of the multi-split system in the refrigeration process is smaller than the preset load, whether the operation information of the multi-split system meets the preset anti-condensation condition is judged; if the operation information of the multi-split air conditioner system meets the preset anti-condensation condition, acquiring all temperature change rates of a refrigerating space of the multi-split air conditioner system and the operation time of an operated indoor unit in the multi-split air conditioner system; judging whether the running indoor units in the multi-split system have condensation risks or not according to all temperature change rates of a refrigerating space of the multi-split system and the running time of the running indoor units in the multi-split system; if the condensation risk exists in the running indoor units in the multi-split system, the running parameters of the running indoor units in the multi-split system are adjusted according to the preset condensation prevention adjustment rule, and the condensation risk of the running indoor units in the multi-split system is reduced when the running load of the multi-split system is smaller than the preset load.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart illustrating a control method of a multi-split system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a first embodiment of a control device of a multi-split system according to the present invention;
fig. 3 is a schematic structural diagram of a second embodiment of a control device of a multi-split system according to the present invention;
fig. 4 is a schematic configuration diagram of a control apparatus of a multi-split system of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Fig. 1 is a flowchart of an embodiment of a method for controlling a multi-split system according to the present invention, and as shown in fig. 1, the method for controlling a multi-split system according to the present embodiment may specifically include the following steps:
100. when the operation load of the multi-split system in the refrigeration process is smaller than the preset load, judging whether the operation information of the multi-split system meets the preset anti-condensation condition;
in a specific implementation process, the operation frequency of the compressor of the external unit in the multi-split air-conditioning system and the operating wind speed in the multi-split air-conditioning system are often important factors influencing the condensation phenomenon caused by the operation in the multi-split air-conditioning system, so in this embodiment, the operation frequency of the compressor of the external unit in the multi-split air-conditioning system and the operating wind speed in the multi-split air-conditioning system can be used as the operation information of the multi-split air-conditioning system, and further, whether the operation information of the multi-split air-conditioning system meets the preset condensation preventing condition can be judged.
Specifically, when a user only needs to open a small number of indoor units, the operation load of the multi-split system is relatively small, the operating wind speed in the multi-split system is often relatively small, and the output power of the external unit of the multi-split system is often large. At this time, it is often necessary to perform a frequency reduction operation on the operating frequency of the compressor of the external unit in the multi-split system to reduce the power output by the external unit of the multi-split system. However, although the operation frequency of the compressor of the outer unit in the multi-split air-conditioning system is reduced to the minimum operation frequency, the output power of the outer unit in the multi-split air-conditioning system is still high, which still causes the problem of condensation generated during the operation of the multi-split air-conditioning system. In addition, the wind speed of the running indoor unit in the multi-split system does not run at a high wind speed without a risk of condensation, so in this embodiment, the preset condensation preventing condition includes that the running frequency of the compressor of the outdoor unit in the multi-split system is reduced to a preset lowest running frequency and the wind speed of the running indoor unit in the multi-split system is less than a preset wind speed.
In the embodiment, a load value can be preset as a preset load according to practical experience aiming at the condensation problem easily occurring when the multi-split system is in a low operation load, so that, when the operation load of the multi-split system in the refrigeration process is less than the preset load, whether the operation frequency of the compressor of the outdoor unit in the multi-split system is reduced to the preset lowest operation frequency or not can be detected, so that when the operating frequency of the compressor of the outdoor unit in the multi-split system is lowered to a preset minimum operating frequency, detecting whether the running wind speed in the multi-split system is less than a preset wind speed, if so, the operation information of the multi-split system can be determined to meet the preset condensation preventing condition, and the multi-split system needs to be controlled to prevent the condensation phenomenon of the running indoor unit of the multi-split system.
For example, the load value of the indoor unit with the minimum power in each multi-split system may be selected as the preset load, or the sum of the load values of the two indoor units may be selected as the preset load in the order from small to large.
Similarly, a wind speed can be preset as a preset wind speed according to practical experience aiming at the problem that condensation is easy to occur when the multi-split air conditioner operates at a low wind speed, so that when the operating frequency of a compressor of an outdoor unit in the multi-split air conditioner is reduced to the preset lowest operating frequency, whether the operated wind speed in the multi-split air conditioner is smaller than the preset wind speed or not is detected.
It should be noted that, because the operating wind speed in the multi-split air-conditioning system is obvious in human senses, the operating frequency of the compressor of the outdoor unit in the multi-split air-conditioning system has a relatively large influence on the condensation phenomenon of the operating indoor unit in the main multi-split air-conditioning system, and therefore, in this embodiment, it is required to first determine whether the operating frequency of the compressor of the outdoor unit in the multi-split air-conditioning system is the preset lowest operating frequency, and detect whether the operating wind speed in the multi-split air-conditioning system is less than the preset wind speed when the operating frequency of the compressor of the outdoor unit in the multi-split air-conditioning system is reduced to the preset lowest operating frequency.
101. If the operation information of the multi-split air conditioner system meets the preset anti-condensation condition, acquiring all temperature change rates of a refrigerating space of the multi-split air conditioner system and the operation time of an operated indoor unit in the multi-split air conditioner system;
in a specific implementation process, condensation is a slow process, condensation water can drip only after long-time accumulation, little water vapor or water mist exists in a short time, and no dripping risk exists, and all temperature change rates of a refrigerating space of the multi-connected system and the operation time of an operated indoor unit in the multi-connected system are main parameters for determining whether condensation occurs in the operation of the multi-connected system, so that in the embodiment, after the multi-connected system is started, the temperature change rate in each period and the operation time of the operated indoor unit in the multi-connected system can be counted according to a preset period, so that if the operation information of the multi-connected system meets a preset condensation preventing condition, namely the operation frequency of a compressor of an outdoor unit in the multi-connected system is reduced to a preset lowest operation frequency and the operated wind speed in the multi-connected system is smaller than a preset wind speed, the temperature change rates of all the refrigerating spaces of the multi-split system and the operation time of the operated indoor units in the multi-split system can be obtained, so that whether the operated indoor units in the multi-split system have the risk of condensation or not can be determined under the condition that the operation in the multi-split system meets the condensation preventing condition.
102. Judging whether the running indoor units in the multi-split system have condensation risks or not according to all temperature change rates of the refrigerating space and the running time of the running indoor units in the multi-split system;
specifically, in this embodiment, it may be detected whether all temperature change rates of the refrigerating space are less than a preset change threshold; if all the temperature change rates of the refrigerating space are smaller than a preset change threshold value, detecting whether the operation time of an operated indoor unit in the multi-split system is longer than a preset time; and if the running time of the running indoor unit in the multi-split system is longer than the preset time, judging that the running indoor unit has a condensation risk.
Correspondingly, if all the temperature change rate unevenness of the refrigerating space is smaller than a preset change threshold (that is, in all the temperature change rates of the refrigerating space, only one temperature change rate is larger than or equal to the preset change threshold), or the operation time of the operated indoor unit in the multi-split system is not larger than the preset time, it is determined that the operated indoor unit does not have the condensation risk.
For example, the preset period is preferably 10min, the preset change threshold is preferably 3 ℃, and the preset time period is preferably 3 h. In this embodiment, the temperature change rate of the refrigeration space of the multi-split air-conditioning system is counted once every 10min, and if the temperature change rate of the refrigeration space of the multi-split air-conditioning system is less than 3 ℃ each time and the operation time of the operated indoor units in the multi-split air-conditioning system is accumulated to operate for 3 hours, it is determined that the operated indoor units in the multi-split air-conditioning system have a condensation risk.
And if the temperature change rate of the refrigerating space of the multi-split system for one or more times is more than 3 ℃, and/or the running time of the running indoor unit in the multi-split system is not accumulated for 3 hours, judging that the running indoor unit does not have the condensation risk.
103. And if the running indoor units in the multi-split system have condensation risks, adjusting the running parameters of the indoor units in the multi-split system according to a preset condensation prevention adjustment rule.
In this embodiment, the operation parameters of the indoor unit may include a fan rotation speed corresponding to a wind speed of an already-operated fan in the multi-split air-conditioning system and an evaporation superheat degree of the already-operated indoor unit in the multi-split air-conditioning system. In this way, if the running indoor unit in the multi-split system has a condensation risk, the rotating speed of the fan of the running indoor unit in the multi-split system can be increased according to a preset first period and a preset speed-increasing parameter, and the maximum value of the rotating speed of the fan of the running indoor unit in the multi-split system is less than or equal to a preset rotating speed value; and/or increasing the evaporation superheat degree of the operated indoor unit in the multi-split system according to a preset second period and a preset temperature rise value, wherein the accumulated temperature rise value of the evaporation superheat degree of the operated indoor unit in the multi-split system is less than or equal to a preset temperature value. The preset rotating speed value is preferably the middle-gear rotating speed of the running indoor unit in the multi-split system, and the preset temperature value is preferably 10 ℃.
In the control method of the multi-split air conditioning system according to the embodiment, when the operation load of the multi-split air conditioning system in the refrigeration process is smaller than the preset load, whether the operation information of the multi-split air conditioning system meets the preset anti-condensation condition is judged; if the operation information of the multi-split air conditioner system meets the preset anti-condensation condition, acquiring all temperature change rates of a refrigerating space of the multi-split air conditioner system and the operation time of an operated indoor unit in the multi-split air conditioner system; judging whether the running indoor units in the multi-split system have condensation risks or not according to all temperature change rates of a refrigerating space of the multi-split system and the running time of the running indoor units in the multi-split system; if the condensation risk exists in the running indoor units in the multi-split system, the running parameters of the running indoor units in the multi-split system are adjusted according to the preset condensation prevention adjustment rule, and the condensation risk of the running indoor units in the multi-split system is reduced when the running load of the multi-split system is smaller than the preset load.
In a specific implementation process, in the process of executing step 100 and step 103, if it is detected that the state of the operating indoor unit in the multi-split system has changed, the anti-condensation mode corresponding to the anti-condensation condition is exited, and the operation is performed according to the corresponding operation mode when the state changes. For example, if a wind speed adjustment instruction of a user is received, an operating indoor unit in the multi-split system is controlled to operate according to a target wind speed carried by the wind speed adjustment instruction of the user. And if a shutdown instruction of the running indoor unit in the multi-online system is received, shutting down the running indoor unit in the multi-online system.
It should be noted that, if a wind speed adjustment instruction of a user is received, since a condensation phenomenon may still occur at a wind speed specified by the user, after the operation is performed according to a target wind speed carried by the wind speed adjustment instruction of the user, the operation may enter the condensation prevention mode corresponding to the condensation prevention condition again so as to re-execute step 100 and step 103, at this time, after it is determined that a condensation risk exists in an operating indoor unit in the multi-split air-conditioning system, a prompt message needs to be sent to the user, so that after feedback information of the user is received, a corresponding operation is executed according to the feedback information of the user. For example, if the feedback information of the user indicates that the operation parameters of the operated indoor units in the multi-split system are adjusted, the operation parameters of the operated indoor units in the multi-split system are adjusted according to a preset condensation prevention adjustment rule. And if the feedback information of the user indicates that the operation parameters of the operated indoor unit in the multi-split system are not adjusted, the operation parameters of the operated indoor unit in the multi-split system are not adjusted. And if the feedback information of the user indicates that the current wind speed is maintained, according to a preset second period and a preset temperature rise value, the evaporation superheat degree of the running indoor unit in the multi-split air conditioning system is increased, and the accumulated temperature rise value of the evaporation superheat degree is smaller than or equal to a preset temperature value.
In order to be more comprehensive, the application also provides a control device of the multi-split system, which corresponds to the control method of the multi-split system provided by the embodiment of the invention. Fig. 2 is a schematic structural diagram of a first embodiment of a control device of a multi-split system according to the present invention, and as shown in fig. 2, the control device of the multi-split system of the present embodiment includes a first determining module 10, an obtaining module 11, a second determining module 12, and an adjusting module 13.
The first judging module 10 is configured to, when an operation load of the multi-split air conditioning system in a refrigeration process is smaller than a preset load, judge whether operation information of the multi-split air conditioning system meets a preset condensation preventing condition;
in a specific implementation process, the operation information of the multi-split system comprises the operation frequency of a compressor of an outdoor unit in the multi-split system and the operating wind speed in the multi-split system; the preset condensation preventing condition comprises that the operation frequency of the compressor is reduced to a preset lowest operation frequency, and the wind speed of an operated indoor unit in the multi-split system is smaller than a preset wind speed.
The obtaining module 11 is configured to, by the first determining module 10, obtain all temperature change rates of a refrigeration space of the multi-split system and an operation duration of an operated indoor unit in the multi-split system if the operation information of the multi-split system meets a preset anti-condensation condition;
the second judging module 12 is configured to judge whether a condensation risk exists in an already-operated indoor unit in the multi-split air conditioning system according to all temperature change rates of a refrigerating space of the multi-split air conditioning system and an operation duration of the already-operated indoor unit in the multi-split air conditioning system;
in this embodiment, the second determining module 12 is specifically configured to:
detecting whether all temperature change rates of refrigerating spaces of the multi-split air conditioning system are smaller than a preset change threshold value or not;
if all temperature change rates of a refrigerating space of the multi-split system are smaller than a preset change threshold value, detecting whether the operation time of an operated indoor unit in the multi-split system is longer than a preset time;
and if the operation time of the operation indoor unit of the refrigerating space of the multi-split system is longer than the preset time, judging that the condensation risk exists in the operation indoor unit in the multi-split system.
And if the non-uniform temperature change rate of all the refrigerating spaces of the multi-split system is smaller than the preset change threshold value, or the operation time of the operated indoor units in the multi-split system is not longer than the preset time, judging that the operated indoor units in the multi-split system do not have the condensation risk.
And the adjusting module 13 is used for adjusting the operation parameters of the operated indoor units in the multi-split system according to a preset condensation prevention adjusting rule if the operated indoor units in the multi-split system have a condensation risk.
Specifically, according to a preset first period and a preset speed-up parameter, increasing the rotating speed of a fan of an operated indoor unit in the multi-split system, wherein the maximum value of the rotating speed of the fan of the operated indoor unit in the multi-split system is less than or equal to a preset rotating speed value; and/or according to a preset second period and a preset temperature rise value, the evaporation superheat degree of the running indoor unit in the multi-split system is improved, and the accumulated temperature rise value of the evaporation superheat degree is smaller than or equal to a preset temperature value.
In the control device of the multi-split system in this embodiment, when the operation load of the multi-split system in the refrigeration process is smaller than the preset load, whether the operation information of the multi-split system meets the preset anti-condensation condition is judged; if the operation information of the multi-split air conditioner system meets the preset anti-condensation condition, acquiring all temperature change rates of a refrigerating space of the multi-split air conditioner system and the operation time of an operated indoor unit in the multi-split air conditioner system; judging whether the running indoor units in the multi-split system have condensation risks or not according to all temperature change rates of a refrigerating space of the multi-split system and the running time of the running indoor units in the multi-split system; if the condensation risk exists in the running indoor units in the multi-split system, the running parameters of the running indoor units in the multi-split system are adjusted according to the preset condensation prevention adjustment rule, and the condensation risk of the running indoor units in the multi-split system is reduced when the running load of the multi-split system is smaller than the preset load.
Fig. 3 is a schematic structural diagram of a second embodiment of the control device of the multi-split system according to the present invention, and as shown in fig. 3, the control device of the multi-split system according to the present embodiment may further include a detection module 14 on the basis of the above embodiment.
The detection module 14 is configured to exit from the condensation prevention mode corresponding to the condensation prevention condition if it is detected that the state of the running indoor unit in the multi-split air conditioning system changes.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
In order to be more comprehensive, the application also provides control equipment of the multi-split system, which corresponds to the control method of the multi-split system provided by the embodiment of the invention. Fig. 4 is a schematic structural diagram of a control apparatus of a multi-split system of the present invention, and as shown in fig. 4, the control apparatus of the multi-split system of the present embodiment may include a processor 20 and a memory 21;
the processor 20 is connected to a memory 21:
wherein, the processor 20 is configured to call and execute the program stored in the memory 21;
the memory 21 is configured to store the program for executing at least the control method of the multi-split system shown in the above-described embodiment.
In order to be more comprehensive, the application also provides a multi-split system corresponding to the control method of the multi-split system provided by the embodiment of the invention. The filtering apparatus 2 as shown in the above embodiment is provided in the multi-split system of the present embodiment.
In order to be more comprehensive, the present application also provides a storage medium having a computer program stored thereon, where the computer program is executed by a processor to implement the steps of the control method of the multi-split system according to the above embodiment, corresponding to the control method of the multi-split system provided by the embodiment of the present invention.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that the terms "first," "second," and the like in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (12)
1. A method for controlling a multi-split system, comprising:
when the operation load of the multi-split system in the refrigeration process is smaller than a preset load, judging whether the operation information of the multi-split system meets a preset anti-condensation condition;
if the operation information of the multi-split system meets the preset anti-condensation condition, acquiring all temperature change rates of a refrigerating space of the multi-split system and the operation time of an operated indoor unit in the multi-split system;
judging whether the operated indoor unit has a condensation risk or not according to all temperature change rates of the refrigerating space and the operation duration of the operated indoor unit;
and if the operated indoor unit has the condensation risk, adjusting the operation parameters of the operated indoor unit according to a preset condensation prevention adjustment rule.
2. The method for controlling a multi-split system as claimed in claim 1, wherein the determining whether the operated indoor unit has a risk of condensation according to a temperature change rate of the refrigerating space and an operation time period of the operated indoor unit includes:
detecting whether all the temperature change rates are smaller than a preset change threshold value;
if all the temperature change rates are smaller than the preset change threshold value, detecting whether the running time of the running indoor unit is longer than the preset time;
and if the running time of the running indoor unit is longer than the preset time, judging that the running indoor unit has a condensation risk.
3. The method of controlling a multi-split system as set forth in claim 2, further comprising:
and if the all temperature change rate unevenness is smaller than the preset change threshold value, or the running time of the running indoor unit is not longer than the preset time, judging that the running indoor unit does not have condensation risk.
4. The method for controlling a multi-split system according to claim 1, wherein the adjusting the operation parameters of the operated indoor unit according to a preset anti-condensation adjustment rule comprises:
according to a preset first period and a preset speed increasing parameter, increasing the rotating speed of a fan of the operated indoor unit, wherein the highest value of the rotating speed of the fan is less than or equal to a preset rotating speed value; and/or
And according to a preset second period and a preset temperature rise value, increasing the evaporation superheat degree of the operated indoor unit, wherein the accumulated temperature rise value of the evaporation superheat degree is less than or equal to a preset temperature value.
5. The method for controlling a multi-split system as set forth in any one of claims 1 to 4, further comprising:
and if the state of the running indoor unit is detected to be changed, exiting the anti-condensation mode corresponding to the anti-condensation condition.
6. The control method of a multi-split system as claimed in any one of claims 1 to 4, wherein the operation information of the multi-split system includes an operation frequency of a compressor of an outdoor unit in the multi-split system and an operating wind speed in the multi-split system;
the anti-condensation condition comprises that the operation frequency of the compressor is reduced to a preset lowest operation frequency, and the wind speed of an operated indoor unit in the multi-split air-conditioning system is smaller than a preset wind speed.
7. A control device of a multi-split system, comprising:
the first judgment module is used for judging whether the operation information of the multi-split system meets a preset anti-condensation condition or not when the operation load of the multi-split system in the refrigeration process is smaller than a preset load;
the acquisition module is used for acquiring all temperature change rates of a refrigerating space of the multi-split system and the operation time of an operated indoor unit in the multi-split system if the operation information of the multi-split system meets a preset anti-condensation condition;
the second judgment module is used for judging whether the operated indoor unit has a condensation risk or not according to all temperature change rates of the refrigerating space and the operation duration of the operated indoor unit;
and the adjusting module is used for adjusting the operating parameters of the operated indoor unit according to a preset condensation prevention adjusting rule if the operated indoor unit has a condensation risk.
8. The device for controlling a multi-split system according to claim 7, wherein the second determining module is specifically configured to:
detecting whether all the temperature change rates are smaller than a preset change threshold value;
if all the temperature change rates are smaller than the preset change threshold value, detecting whether the running time of the running indoor unit is longer than the preset time;
and if the running time of the running indoor unit is longer than the preset time, judging that the running indoor unit has a condensation risk.
9. The control apparatus of a multi-split system as claimed in claim 7 or 8, wherein the operation information of the multi-split system includes an operation frequency of a compressor of an outdoor unit in the multi-split system and an operating wind speed in the multi-split system;
the anti-condensation condition comprises that the operation frequency of the compressor is reduced to a preset lowest operation frequency, and the wind speed of an operated indoor unit in the multi-split air-conditioning system is smaller than a preset wind speed.
10. A control apparatus of a multi-split system, comprising: a processor and a memory;
the processor is connected with the memory:
the processor is used for calling and executing the program stored in the memory;
the memory for storing the program for executing at least the control method of the multi-online system as recited in any one of claims 1 to 6.
11. A multi-split system characterized in that a control apparatus of the multi-split system as claimed in claim 10 is provided.
12. A storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the control method of a multi-split system as set forth in any one of claims 1 to 6.
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