CN115540244A - Multi-split air conditioner control method and device, storage medium and air conditioner - Google Patents
Multi-split air conditioner control method and device, storage medium and air conditioner Download PDFInfo
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- CN115540244A CN115540244A CN202110740454.2A CN202110740454A CN115540244A CN 115540244 A CN115540244 A CN 115540244A CN 202110740454 A CN202110740454 A CN 202110740454A CN 115540244 A CN115540244 A CN 115540244A
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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
- F24F11/56—Remote control
- F24F11/58—Remote control using Internet communication
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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
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a control method and device for a multi-split air conditioner, a storage medium and the air conditioner, and belongs to the technical field of air conditioner control. When a target indoor unit which is shut down is detected to exist in the multi-split air conditioner, the running parameter information of the target indoor unit in a shut down state is acquired; taking the target indoor unit of which the operation parameter information meets the preset condition as an indoor unit to be controlled; the electronic expansion valve of the indoor unit to be controlled is intermittently started, the indoor unit to be controlled is identified through the operation parameter information, the opening degree of the electronic expansion valve of the indoor unit to be controlled is controlled in an intermittent starting mode, the electronic expansion valve is prevented from always maintaining one opening degree, and the stability of the indoor temperature can be guaranteed when the air conditioner heats.
Description
Technical Field
The invention relates to the technical field of air conditioner control, in particular to a control method and device of a multi-split air conditioner, a storage medium and an air conditioner.
Background
When one or more indoor units reach Wen Tingji, the multi-split air conditioner still keeps supplying air to prevent heat radiation of the heat exchangers of the indoor units from interfering with the indoor temperature sensor so as to ensure that the temperature detected by the indoor temperature sensor is accurate. When one or more indoor units of the multi-split air conditioner reach Wen Tingji, an electronic expansion valve corresponding to the Wen Tingji indoor unit is closed, air supply is kept, refrigerant in a heat exchanger of the indoor unit can be condensed, the condensed refrigerant can be accumulated in the heat exchanger, the flow of the refrigerant in the whole system is reduced, the heating quantity of other heating indoor units is insufficient, and even the whole machine is stopped due to failure.
In the prior art, an electronic expansion valve opening switch of a Wen Tingji indoor unit for heating is opened by a small number of steps, so that a refrigerant which is condensed and accumulated in a Wen Tingji indoor unit heat exchanger is continuously released into an outdoor unit heat exchanger at a small flow rate, and participates in a heating cycle again, and the accumulation of a large amount of refrigerant in the indoor unit heat exchanger in a temperature-reaching shutdown state is avoided. However, in such a manner, the indoor unit which is stopped at a high temperature still has a small heating capacity, so that the indoor temperature of a room which is small in area and well insulated is overhigh.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a control method and device of a multi-split air conditioner, a storage medium and the air conditioner, and aims to solve the technical problem that the room with good heat preservation has overhigh indoor temperature in the prior art.
In order to achieve the above object, the present invention provides a control method for a multi-split air conditioner, which comprises the following steps:
when a target indoor unit for stopping the multi-split air conditioner is detected, acquiring running parameter information of the target indoor unit in a stopping state;
taking the target indoor unit of which the operation parameter information meets the preset condition as an indoor unit to be controlled; and
and discontinuously starting the electronic expansion valve of the indoor unit to be controlled.
Optionally, before the target indoor unit whose operation parameter information meets the preset condition is taken as the indoor unit to be controlled, the method further includes:
extracting the shutdown duration corresponding to the target indoor unit and the current indoor environment temperature of the target indoor unit when the target indoor unit is shut down from the operation parameter information;
determining a temperature difference value according to the initial indoor environment temperature and the current indoor environment temperature; and
and when the temperature difference is greater than or equal to a preset difference threshold value and the shutdown time is greater than or equal to a preset time, judging that the operation parameter information meets a preset condition.
Optionally, the intermittently starting the electronic expansion valve of the indoor unit to be controlled includes:
closing the electronic expansion valve of the indoor unit to be controlled; and
and after the electronic expansion valve is closed, re-opening the electronic expansion valve according to a target time interval, and adjusting the opening degree of the electronic expansion valve to be a first preset opening degree.
Optionally, after the electronic expansion valve is closed, the electronic expansion valve is re-opened according to a target time interval, and before the opening degree of the electronic expansion valve is adjusted to a first preset opening degree, the method further includes:
acquiring the number of indoor units corresponding to the indoor units to be controlled; and
and determining a target time interval according to the number of the indoor units and preset parameters.
Optionally, after the electronic expansion valve is closed, the electronic expansion valve is re-opened according to a target time interval, and before the opening degree of the electronic expansion valve is adjusted to a first preset opening degree, the method further includes:
acquiring the current compressor frequency of the multi-split air conditioner;
comparing the current compressor frequency with a preset compressor frequency; and
and when the current compressor frequency is greater than or equal to the preset compressor frequency, adjusting the current compressor frequency to the preset compressor frequency.
Optionally, after comparing the current compressor frequency with a preset compressor frequency, further comprising:
and when the current compressor frequency is less than the preset compressor frequency, maintaining the current compressor frequency unchanged.
Optionally, after the electronic expansion valve of the indoor unit to be controlled is intermittently started, the method further includes:
and controlling the opening degree of the electronic expansion valve of the target indoor unit of which the operation parameter information does not meet the preset condition to be maintained at a second preset opening degree.
In addition, in order to achieve the above object, the present invention further provides a control apparatus for a multi-split air conditioner, including:
the detection module is used for acquiring the running parameter information of a target indoor unit in a shutdown state when the target indoor unit for shutdown of the multi-split air conditioner is detected;
the judging module is used for taking the target indoor unit of which the operation parameter information meets the preset condition as the indoor unit to be controlled;
and the control module is used for discontinuously starting the electronic expansion valve of the indoor unit to be controlled.
In addition, to achieve the above object, the present invention also provides an air conditioner, comprising: the multi-split air conditioner control program is configured to realize the multi-split air conditioner control method.
In addition, to achieve the above object, the present invention further provides a storage medium having a multi-split air conditioner control program stored thereon, wherein the multi-split air conditioner control program, when executed by a processor, implements the multi-split air conditioner control method as described above.
When a target indoor unit which is shut down is detected to exist in the multi-split air conditioner, the running parameter information of the target indoor unit in a shut down state is acquired; taking the target indoor unit of which the operation parameter information meets the preset condition as an indoor unit to be controlled; the electronic expansion valve of the indoor unit to be controlled is intermittently started, the indoor unit to be controlled is identified through the operation parameter information, the opening degree of the electronic expansion valve of the indoor unit to be controlled is controlled in an intermittent starting mode, the electronic expansion valve is prevented from always maintaining one opening degree, and the stability of the indoor temperature can be guaranteed when the air conditioner heats.
Drawings
FIG. 1 is a schematic diagram of an air conditioner in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a control method for a multi-split air conditioner according to a first embodiment of the present invention;
FIG. 3 is a flowchart illustrating a control method for a multi-split air conditioner according to a second embodiment of the present invention;
fig. 4 is a block diagram illustrating a control apparatus for a multi-split air conditioner according to a first embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an air conditioner in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the air conditioner may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a Wireless interface (e.g., a Wireless-Fidelity (WI-FI) interface). The Memory 1005 may be a Random Access Memory (RAM) Memory, or may be a Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in fig. 1 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a storage medium, may include therein an operating system, a network communication module, a user interface module, and a multi-split air conditioner control program.
In the air conditioner shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 of the air conditioner of the present invention may be disposed in the air conditioner, and the air conditioner calls the control program of the multi-split air conditioner stored in the memory 1005 through the processor 1001 and executes the control method of the multi-split air conditioner provided by the embodiment of the present invention.
Referring to fig. 2, fig. 2 is a schematic flow diagram illustrating a method for controlling a multi-split air conditioner according to a first embodiment of the present invention.
In this embodiment, the method for controlling a multi-split air conditioner includes the following steps:
step S10: when a target indoor unit which is shut down is detected in the multi-split air conditioner, the running parameter information of the target indoor unit in a shut down state is obtained.
It should be noted that, the execution main body of the embodiment may be a multi-split air conditioner control device, the multi-split air conditioner control device may be an electronic device such as a personal computer or a server, and may also be other controllers and devices that can achieve the same or similar functions.
It should be noted that, in order to solve the problems that the electronic expansion valve of the indoor unit of Wen Tingji is closed, the refrigerant in the heat exchanger of the indoor unit is condensed by keeping the air supply, and the condensed refrigerant is accumulated in the heat exchanger, so that the refrigerant flow in the whole system is reduced, the heating capacity of other heating indoor units is insufficient, and even the complete machine is in a fault shutdown state, in the prior art, the electronic expansion valve of the indoor unit of Wen Tingji is always maintained at a small opening degree, so as to solve the above problems. It is emphasized that if a stop condition occurs during the heating operation of the air conditioner, it indicates that the temperature of the indoor environment has reached the comfort temperature or the temperature set by the user. In practical conditions, because the structures of different rooms are different, the heat insulating property of some rooms is poor, after the air conditioner is shut down for a short time, the heating operation is restarted, but the heat insulating property of some rooms is good, after the air conditioner is shut down, a long period of time is needed, the air conditioner can restart the heating operation, if the electronic expansion valve is enabled to be opened with a small opening degree all the time according to the scheme in the prior art, the temperature in the room with good heat insulating property is enabled to continuously rise, the situation of high temperature occurs, and the comfort of users is seriously affected. In the present embodiment, in order to solve the above problem, the shutdown conditions of the indoor units in different heat-insulating rooms are detected, and the indoor units in the respective rooms are controlled in a targeted manner according to the detection result.
In a specific implementation, the present embodiment may detect the operation state of each indoor unit of the air conditioner according to an instruction input by a user, for example, detect the operation state of an indoor unit that is operating in each room according to a shutdown detection instruction input by the user. Further, in this embodiment, a preset time may also be set, and when the preset time is reached, the operation state of the indoor units in operation in each room is automatically detected. Further, in this embodiment, an operation status identifier of each indoor unit may be obtained, and then the operation status of each indoor unit is determined according to the obtained operation status identifier, where the operation status includes an un-powered on status, a heating operation status, a shutdown status, and the like, and the indoor unit in the shutdown status is used as the target indoor unit. In addition, the present embodiment may also adopt other manners to detect the shutdown condition of the indoor unit, which is not limited to this.
It should be noted that, in this embodiment, a targeted control room is adopted for each stopped indoor unit and is determined based on operation parameter information in a stopped state, where the operation parameter information includes, but is not limited to, a stop duration of the indoor unit and an indoor environment temperature when the indoor unit is stopped, the stop duration of the indoor unit is recorded from a stop time of the indoor unit, and the indoor environment temperature is obtained in real time through a temperature sensor.
Step S20: and taking the target indoor unit with the operation parameter information meeting the preset conditions as the indoor unit to be controlled.
In a specific implementation, after the operation parameter information is obtained, the indoor unit to be controlled may be screened out from the target indoor unit according to a preset condition, where the preset condition may be set as preset parameter information, the preset parameter information includes, but is not limited to, a preset shutdown time or a preset indoor environment temperature, and the preset condition may be set correspondingly according to an actual situation, which is not limited in this embodiment. The target indoor unit is an indoor unit in a shutdown state, the shutdown type of the indoor unit in the shutdown state can be determined according to preset conditions, the shutdown type comprises a temperature-accessible shutdown type and a temperature-inaccessible shutdown type, the indoor unit corresponding to the condition that the operation parameter information meets the preset conditions in the embodiment belongs to the temperature-accessible shutdown type, the indoor unit of the type is an indoor unit to be controlled, a special control mode needs to be adopted, the indoor unit corresponding to the condition that the operation parameter information does not meet the preset conditions belongs to the temperature-inaccessible shutdown type, and a common control mode can be adopted for the indoor unit of the type.
Further, in the embodiment, in order to more accurately identify the indoor unit to be controlled, which needs to be specially controlled, whether the operation parameter meets the preset condition may be detected as follows. Specifically, before step S20, parameter extraction is performed on the obtained operation parameter information, different parameters have corresponding parameter identifiers, and the shutdown duration when the target indoor unit is in the shutdown state, the real-time temperature in the room during the shutdown process of the target indoor unit, that is, the current indoor environment temperature, and the current temperature in the room at the shutdown time of the target indoor unit, that is, the initial environment temperature, can be extracted from the operation parameter information based on the parameter identifiers. The current indoor environment temperature is obtained in real time, after the current indoor environment temperature and the initial indoor environment temperature are obtained, the temperature difference between the initial indoor environment temperature and the current indoor environment temperature is calculated, and whether the running parameter information meets the preset condition or not is finally judged according to the temperature difference and the shutdown duration
In a specific implementation, in this embodiment, whether the operation parameter information meets the preset condition is determined according to a preset temperature difference threshold and a preset duration. Specifically, if the temperature difference is greater than or equal to the preset difference threshold value and the shutdown time is greater than or equal to the preset time, it is indicated that after the indoor unit stops for a long period of time, the indoor temperature does not decrease but increases to some extent due to better room heat insulation, so that the indoor unit is easy to reach the temperature. Further, if the shutdown time length and the temperature difference value do not satisfy the above conditions, it indicates that after the indoor unit stops for a long period of time, the indoor temperature is reduced to some extent due to poor heat insulation of the room, so that the indoor unit is not easy to reach the temperature, and it is determined that the operation parameter information does not satisfy the preset condition under such a condition. It should be further emphasized that, in this embodiment, the duration range of the preset duration is 30 to 180min, and the temperature range corresponding to the temperature difference is 1 to 10 ℃, in order to ensure the accuracy and the rationality of the determination, the preset duration may be set to 60min, and the temperature difference may be set to 2 ℃, which, of course, may be adjusted accordingly according to the specific environmental conditions, and this embodiment limits this.
Step S30: and discontinuously starting the electronic expansion valve of the indoor unit to be controlled.
In a specific implementation, for an indoor unit to be controlled that needs to be specially controlled, in this embodiment, an electronic expansion valve of the indoor unit of this type is controlled by using an intermittent start mode. The intermittent start may be performed by opening the electronic expansion valve at a preset time interval, then opening the electronic expansion valve for a period of time, and then closing the electronic expansion valve, and sequentially circulating the whole opening and closing process, where the preset time interval and the opening duration of the electronic expansion valve may be set accordingly according to actual conditions, which is not limited in this embodiment.
Further, in this embodiment, the indoor unit to be controlled that needs special control is intermittently started, and for the indoor unit that does not need special control, that is, the target indoor unit is other than the indoor unit to be controlled, the ordinary control method is adopted in this embodiment to control the opening and closing of the electronic expansion valve.
In a specific implementation, after the other indoor units reach Wen Tingji, the electronic expansion valves of the other indoor units are maintained at a certain opening degree in this embodiment, and the opening degree of the electronic expansion valves is not restored to the normal opening degree until the other indoor units resume heating operation. Specifically, after the other indoor units are stopped, the opening degrees of the electronic expansion valves in the other rooms are maintained at a second preset opening degree, where the second preset opening degree may be set according to user requirements, for example, an instruction input by a user is received to maintain the opening degree of the electronic expansion valve at the second preset opening degree, or may be automatically adjusted according to an indoor temperature, for example, the second preset opening degree is determined according to a temperature difference between an initial indoor environment temperature and a current indoor environment temperature, and then, the second preset opening degree is determined by combining a corresponding relationship between the temperature difference and the opening degree.
In the embodiment, when a target indoor unit which is shut down is detected to exist in the multi-split air conditioner, the running parameter information of the target indoor unit in a shut down state is acquired; taking the target indoor unit of which the operation parameter information meets the preset condition as an indoor unit to be controlled; the electronic expansion valve of the indoor unit to be controlled is intermittently started, the indoor unit to be controlled is identified through the operation parameter information, the opening degree of the electronic expansion valve of the indoor unit to be controlled is controlled in an intermittent starting mode, the electronic expansion valve is prevented from always maintaining one opening degree, and the stability of the indoor temperature can be guaranteed when the air conditioner heats.
Referring to fig. 3, fig. 3 is a flowchart illustrating a control method for a multi-split air conditioner according to a second embodiment of the present invention.
Based on the first embodiment, the step S30 in the control method of the multi-split air conditioner in this embodiment specifically includes:
step S301: and closing the electronic expansion valve of the indoor unit to be controlled.
In the specific implementation, after the indoor unit to be controlled reaches Wen Tingji, the opening of the electronic expansion valve is started intermittently so as to avoid the situation that the indoor room is high in temperature. In this embodiment, when the temperature of the room to be controlled is up to a stop, the electronic expansion valve is first closed to stop the heat transfer to the room.
Step S302: and after the electronic expansion valve is closed, re-opening the electronic expansion valve according to a target time interval, and adjusting the opening degree of the electronic expansion valve to be a first preset opening degree.
It should be noted that, in the air conditioner with one drive and multiple air conditioners of this embodiment, after the electronic expansion valve corresponding to the indoor unit to be controlled is closed, other indoor units are still in a normal operation state, and the air supply is maintained to condense the refrigerant in the heat exchanger of the indoor unit, and the refrigerant is accumulated in the heat exchanger after being condensed, thereby causing insufficient heating capacity of other heating indoor units, and even causing a complete machine fault shutdown 0 The time reaches Wen Tingji, and if the target time interval is Δ T, then at T 0 And the electronic expansion valve is opened again at the moment of +/-Delta T.
In a specific implementation, in this embodiment, from the closing time of the electronic expansion valve, the closed electronic expansion valve is re-opened after a target time interval, and after the electronic expansion valve is re-opened, the opening degree of the electronic expansion valve is further adjusted, that is, the opening degree of the electronic expansion valve is adjusted to a first preset opening degree, the first preset opening degree in this embodiment may be set according to a user requirement, for example, the opening degree of the electronic expansion valve is adjusted to the first preset opening degree by receiving a control instruction input by a user, or may be automatically adjusted according to an indoor temperature, for example, according to a temperature difference between an initial indoor ambient temperature and a current indoor ambient temperature, and then the first preset opening degree is determined according to a corresponding relationship between the temperature difference and the opening degree, in this embodiment, the first preset opening degree may also be determined in other manners, and no limitation is imposed on this. It should be emphasized that, in this embodiment, the opening range corresponding to the first preset opening is 40 to 200pls, and in order to improve the comfort of the air conditioner, the first preset opening may be set to 80pls, and of course, the first preset opening may also be adjusted accordingly according to the actual user requirement, which is not limited in this embodiment.
Further, in order to more accurately and reasonably perform the intermittent start of the opening degree of the electronic expansion valve, the target time interval may be determined as follows in the present embodiment. Because the number of the indoor units to be controlled is not unique, the number of the indoor units corresponding to the indoor units to be controlled can be obtained first, and the target time interval can be calculated based on the indoor number and the preset parameters. The calculation formula of the target time interval is 30/(n × k), where n is the number of indoor units corresponding to the indoor unit to be controlled, k is a preset parameter, and a parameter range corresponding to the preset parameter is 0.5 to 5, for example, if the number of indoor units corresponding to the indoor unit to be controlled is 2,k, which is 0.5, the target time interval may be calculated to be 30min, that is, after the indoor unit to be controlled is shut down, and after 30min, the closed electronic expansion valve is opened again.
Further, before the electronic expansion valve of the indoor unit to be controlled is re-opened, the current compressor frequency of the air conditioner needs to be adjusted accordingly. It should be noted that, in the present embodiment, the adjustment of the current compressor frequency of the air conditioner is determined based on the magnitude relationship between the current compressor frequency and the preset frequency. Specifically, a current compressor frequency corresponding to the air conditioner is obtained first, then the current compressor frequency is compared with a preset compressor frequency, and if the current compressor frequency is greater than or equal to the preset compressor frequency, the current compressor frequency needs to be reduced, that is, the current compressor frequency is reduced to the preset compressor frequency. Further, if the current frequency is less than the preset compressor frequency, the current compressor frequency is not decreased, and the current compressor frequency is maintained at the current frequency value in this embodiment. Further, after the electronic expansion valve is opened for a certain period of time after the electronic expansion valve is opened, the electronic expansion valve is closed again, and the frequency of the compressor is adjusted back to the frequency before the electronic expansion valve is opened again, that is, the frequency of the compressor before the electronic expansion valve of the indoor unit to be controlled is opened again, wherein the time length corresponding to the time for maintaining the valve opening operation ranges from 0.5 min to 5min, and the time for maintaining the valve opening operation in the embodiment can be set to 2min, which is not limited in the present embodiment.
In the embodiment, the electronic expansion valve of the indoor unit to be controlled is closed; after the electronic expansion valve is closed, the electronic expansion valve is re-opened according to a target time interval, the opening degree of the electronic expansion valve is adjusted to be a first preset opening degree, the electronic expansion valve is prevented from being always maintained at a certain opening degree through an intermittent control mode, the temperature of an indoor room can be kept, meanwhile, the current compressor frequency of the air conditioner can be adjusted according to the preset compression frequency, and the comfort of a user is further improved.
In addition, an embodiment of the present invention further provides a storage medium, where the storage medium stores a multi-split air conditioner control program, and the multi-split air conditioner control program, when executed by a processor, implements the steps of the multi-split air conditioner control method described above.
Referring to fig. 4, fig. 4 is a block diagram illustrating a control apparatus for a multi-split air conditioner according to a first embodiment of the present invention.
As shown in fig. 4, the control apparatus for a multi-split air conditioner according to an embodiment of the present invention includes:
the detection module 10 is configured to, when a target indoor unit that is shut down is detected in the multi-split air conditioner, obtain operation parameter information that the target indoor unit is in a shut down state.
It should be noted that, the execution main body of the embodiment may be a multi-split air conditioner control device, the multi-split air conditioner control device may be an electronic device such as a personal computer or a server, and may also be other controllers and devices that can achieve the same or similar functions.
It should be noted that, in order to solve the problems that the electronic expansion valve of the indoor unit Wen Tingji is closed, the refrigerant in the heat exchanger of the indoor unit is condensed by keeping the air supply, and the condensed refrigerant is accumulated in the heat exchanger, so that the refrigerant flow in the whole system is reduced, the heating capacity of other heating indoor units is insufficient, and even the complete machine is in a fault shutdown state, in the prior art, the electronic expansion valve of the indoor unit Wen Tingji is always kept at a small opening degree, so as to solve the above problems. It should be emphasized that if a shutdown condition occurs during the heating operation of the air conditioner, it indicates that the temperature of the indoor environment has reached the comfort temperature or the temperature set by the user. In practical conditions, because the structures of different rooms are different, the heat insulating property of some rooms is poor, after the air conditioner is shut down for a short time, the heating operation is restarted, but the heat insulating property of some rooms is good, after the air conditioner is shut down, a long period of time is needed, the air conditioner can restart the heating operation, if the electronic expansion valve is enabled to be opened with a small opening degree all the time according to the scheme in the prior art, the temperature in the room with good heat insulating property is enabled to continuously rise, the situation of high temperature occurs, and the comfort of users is seriously affected. In the present embodiment, in order to solve the above problem, the shutdown conditions of the indoor units in different heat-insulating rooms are detected, and the indoor units in the respective rooms are controlled in a targeted manner according to the detection result.
In a specific implementation, the present embodiment may detect the operation state of each indoor unit of the air conditioner according to an instruction input by a user, for example, detect the operation state of an indoor unit that is operating in each room according to a stop detection instruction input by the user. Further, in this embodiment, a preset time may also be set, and when the preset time is reached, the operation state of the indoor units in operation in each room is automatically detected. Further, in this embodiment, an operation status identifier of each indoor unit may be obtained, and then the operation status of each indoor unit is determined according to the obtained operation status identifier, where the operation status includes an un-powered on status, a heating operation status, a shutdown status, and the like, and the indoor unit in the shutdown status is used as the target indoor unit. In addition, the present embodiment may also adopt other manners to detect the shutdown condition of the indoor unit, which is not limited to this.
It should be noted that, in this embodiment, a targeted control room is adopted for each stopped indoor unit and is determined based on operation parameter information in a stopped state, where the operation parameter information includes, but is not limited to, a stop duration of the indoor unit and an indoor environment temperature of the indoor unit when the indoor unit is stopped, the stop duration of the indoor unit starts to be recorded from a stop time of the indoor unit, and the indoor environment temperature is obtained in real time through a temperature sensor.
And the judging module 20 is configured to use the target indoor unit whose operation parameter information meets a preset condition as the indoor unit to be controlled.
In a specific implementation, after the operation parameter information is obtained, the indoor unit to be controlled may be screened out from the target indoor unit according to a preset condition, where the preset condition may be set as preset parameter information, the preset parameter information includes, but is not limited to, a preset shutdown time or a preset indoor environment temperature, and the preset condition may be set correspondingly according to an actual situation, which is not limited in this embodiment. The target indoor unit is an indoor unit in a shutdown state, the shutdown type of the indoor unit in the shutdown state can be determined according to preset conditions, the shutdown type comprises a temperature-accessible shutdown type and a temperature-inaccessible shutdown type, the indoor unit corresponding to the condition that the operation parameter information meets the preset conditions in the embodiment belongs to the temperature-accessible shutdown type, the indoor unit of the type is an indoor unit to be controlled, a special control mode needs to be adopted, the indoor unit corresponding to the condition that the operation parameter information does not meet the preset conditions belongs to the temperature-inaccessible shutdown type, and a common control mode can be adopted for the indoor unit of the type.
Further, in the embodiment, in order to more accurately identify the indoor unit to be controlled, which needs to be specially controlled, whether the operation parameter meets the preset condition may be detected as follows. Specifically, the obtained operation parameter information may be subjected to parameter extraction, different parameters have corresponding parameter identifiers, and the shutdown duration when the target indoor unit is in a shutdown state, the real-time temperature in the room in the shutdown process of the target indoor unit, that is, the current indoor environment temperature, and the current temperature in the room at the time when the target indoor unit is shutdown, that is, the initial environment temperature, may be extracted from the operation parameter information based on the parameter identifiers. The current indoor environment temperature is obtained in real time, after the current indoor environment temperature and the initial indoor environment temperature are obtained, the temperature difference between the initial indoor environment temperature and the current indoor environment temperature is calculated, and whether the running parameter information meets the preset condition or not is finally judged according to the temperature difference and the shutdown duration
In a specific implementation, in this embodiment, whether the operation parameter information meets the preset condition is determined according to a preset temperature difference threshold and a preset duration. Specifically, if the temperature difference is greater than or equal to the preset difference threshold value and the shutdown duration is greater than or equal to the preset duration, it indicates that the indoor unit is easy to reach the temperature after the indoor unit stops for a long period of time because the room has good heat insulation performance and the indoor temperature does not drop but rises, and in this case, it is determined that the operation parameter information meets the preset condition, and the target indoor unit corresponding to the operation parameter information is the indoor unit to be controlled. Further, if the shutdown time length and the temperature difference value do not satisfy the above conditions, it indicates that after the indoor unit stops for a long period of time, the indoor temperature is reduced to some extent due to poor heat insulation of the room, so that the indoor unit is not easy to reach the temperature, and it is determined that the operation parameter information does not satisfy the preset condition under such a condition. It should be further emphasized that, in this embodiment, the duration range of the preset duration is 30 to 180min, and the temperature range corresponding to the temperature difference is 1 to 10 ℃, in order to ensure the accuracy and the rationality of the determination, the preset duration may be set to 60min, and the temperature difference may be set to 2 ℃, which, of course, may be adjusted accordingly according to the specific environmental conditions, and this embodiment limits this.
And the control module 30 is used for performing intermittent starting on the electronic expansion valve of the indoor unit to be controlled.
In a specific implementation, for an indoor unit to be controlled that needs to be specially controlled, the electronic expansion valve of the indoor unit of this type is controlled by adopting an intermittent start mode in this embodiment. The intermittent starting mode may be to open the electronic expansion valve at a preset time interval, then open for a period of time, and then close the electronic expansion valve, and sequentially circulate the whole opening and closing process, where the preset time interval and the opening duration of the electronic expansion valve may be set correspondingly according to actual conditions, and this embodiment is not limited thereto.
Furthermore, in this embodiment, an intermittent start mode is adopted for the indoor unit to be controlled that needs special control, and for the indoor unit that does not need special control, that is, other indoor units in the target indoor unit except the indoor unit to be controlled, a common control mode is adopted in this embodiment to control the opening and closing of the electronic expansion valve.
In a specific implementation, after the other indoor units reach Wen Tingji, the electronic expansion valves of the other indoor units are maintained at a certain opening degree in this embodiment, and the opening degree of the electronic expansion valves is not restored to the normal opening degree until the other indoor units resume heating operation. Specifically, after the other indoor units are stopped, the opening degrees of the electronic expansion valves in the other rooms are maintained at a second preset opening degree, where the second preset opening degree may be set according to user requirements, for example, an instruction input by a user is received to maintain the opening degree of the electronic expansion valve at the second preset opening degree, or may be automatically adjusted according to an indoor temperature, for example, the second preset opening degree is determined according to a temperature difference between an initial indoor environment temperature and a current indoor environment temperature, and then, the second preset opening degree is determined by combining a corresponding relationship between the temperature difference and the opening degree.
In the embodiment, when a target indoor unit which is shut down is detected to exist in the multi-split air conditioner, the running parameter information of the target indoor unit in a shut down state is acquired; taking the target indoor unit of which the operation parameter information meets the preset condition as an indoor unit to be controlled; the electronic expansion valve of the indoor unit to be controlled is intermittently started, the indoor unit to be controlled is identified through the operation parameter information, the opening degree of the electronic expansion valve of the indoor unit to be controlled is controlled in an intermittent starting mode, the electronic expansion valve is prevented from always maintaining one opening degree, and the stability of the indoor temperature can be guaranteed when the air conditioner heats.
It should be understood that the above is only an example, and the technical solution of the present invention is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited thereto.
It should be noted that the above-mentioned work flows are only illustrative and do not limit the scope of the present invention, and in practical applications, those skilled in the art may select some or all of them according to actual needs to implement the purpose of the solution of the present embodiment, and the present invention is not limited herein.
In addition, the technical details that are not described in detail in this embodiment may refer to a control method of a multi-split air conditioner provided in any embodiment of the present invention, and are not described herein again.
Further, it is to be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g. Read Only Memory (ROM)/RAM, magnetic disk, optical disk), and includes several instructions for enabling a terminal device (e.g. a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A control method for a multi-split air conditioner is characterized by comprising the following steps:
when a target indoor unit which is shut down is detected to exist in the multi-split air conditioner, acquiring running parameter information of the target indoor unit in a shut down state;
taking the target indoor unit of which the operation parameter information meets the preset condition as an indoor unit to be controlled; and
and discontinuously starting the electronic expansion valve of the indoor unit to be controlled.
2. The method of claim 1, wherein before the target indoor unit having the operation parameter information satisfying the preset condition is the indoor unit to be controlled, the method further comprises:
extracting the shutdown duration corresponding to the target indoor unit and the current indoor environment temperature of the target indoor unit when the target indoor unit is shut down from the operation parameter information;
determining a temperature difference value according to the initial indoor environment temperature and the current indoor environment temperature; and
and when the temperature difference is greater than or equal to a preset difference threshold value and the shutdown time is greater than or equal to a preset time, judging that the operation parameter information meets a preset condition.
3. The control method of a multi-split air conditioner as set forth in claim 1, wherein said intermittently starting the electronic expansion valve of said indoor unit to be controlled comprises:
closing the electronic expansion valve of the indoor unit to be controlled; and
and after the electronic expansion valve is closed, re-opening the electronic expansion valve according to a target time interval, and adjusting the opening degree of the electronic expansion valve to be a first preset opening degree.
4. The control method of a multi-split air conditioner according to claim 3, wherein, before re-opening the electronic expansion valve at a target time interval after the electronic expansion valve is closed and adjusting the opening degree of the electronic expansion valve to a first preset opening degree, further comprising:
acquiring the number of indoor units corresponding to the indoor units to be controlled; and
and determining a target time interval according to the number of the indoor units and preset parameters.
5. The control method of a multi-split air conditioner according to claim 3, wherein before the electronic expansion valve is re-opened at a target time interval after the electronic expansion valve is closed and the opening degree of the electronic expansion valve is adjusted to a first preset opening degree, further comprising:
acquiring the current compressor frequency of the multi-split air conditioner;
comparing the current compressor frequency with a preset compressor frequency; and
and when the current compressor frequency is greater than or equal to the preset compressor frequency, adjusting the current compressor frequency to the preset compressor frequency.
6. The control method of a multi-split air conditioner as set forth in claim 5, wherein after comparing said current compressor frequency with a preset compressor frequency, further comprising:
and when the current compressor frequency is less than the preset compressor frequency, maintaining the current compressor frequency unchanged.
7. The control method of a multi-split air conditioner as claimed in any one of claims 1 to 6, wherein after said starting the electronic expansion valve of the indoor unit to be controlled intermittently, further comprising:
and controlling the opening degree of the electronic expansion valve of the target indoor unit of which the operation parameter information does not meet the preset condition to be maintained at a second preset opening degree.
8. A control apparatus for a multi-split air conditioner, the control apparatus comprising:
the detection module is used for acquiring the running parameter information of a target indoor unit in a shutdown state when the target indoor unit for shutdown of the multi-split air conditioner is detected;
the judging module is used for taking the target indoor unit of which the operation parameter information meets the preset condition as the indoor unit to be controlled;
and the control module is used for discontinuously starting the electronic expansion valve of the indoor unit to be controlled.
9. An air conditioner, characterized in that the air conditioner comprises: the multi-split air conditioner control program is configured to implement the multi-split air conditioner control method as claimed in any one of claims 1 to 7.
10. A storage medium having stored thereon a multi-split air conditioner control program which, when executed by a processor, implements a multi-split air conditioner control method according to any one of claims 1 to 7.
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| CN202110740454.2A CN115540244A (en) | 2021-06-29 | 2021-06-29 | Multi-split air conditioner control method and device, storage medium and air conditioner |
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| CN202110740454.2A CN115540244A (en) | 2021-06-29 | 2021-06-29 | Multi-split air conditioner control method and device, storage medium and air conditioner |
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