CN119085102B - Intelligent control system and method for multi-connected air conditioning unit - Google Patents
Intelligent control system and method for multi-connected air conditioning unit Download PDFInfo
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- CN119085102B CN119085102B CN202411596229.6A CN202411596229A CN119085102B CN 119085102 B CN119085102 B CN 119085102B CN 202411596229 A CN202411596229 A CN 202411596229A CN 119085102 B CN119085102 B CN 119085102B
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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
- F24F11/88—Electrical aspects, e.g. circuits
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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
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
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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
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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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
- F24F11/62—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
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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- Air Conditioning Control Device (AREA)
Abstract
本发明公开了一种多联式空调机组智能控制系统及方法，属于多联式空调技术领域，包括：数据采集单元，用于实时监测多联式空调机组通信总线自动采集室内机及室外机的数据；室外环境温度采集单元：用于通过与室外机的通信采集到室外环境温度数据；控制单元，用于分析数据采集单元和室外环境温度采集单元的数据，生成控制空调运行的指令；本发明根据各室内机的负荷需求，合理分配冷媒流量，确保各房间温度均匀且满足个性化需求，通过检测到的噪声分贝值和光感值可以提高室内机的运行效率，从而减小室外机的工作负载，通过室内机的优化控制与室外机的优化控制相协同，有效提高了能源的利用率，减少了整体机组的能耗。
The present invention discloses an intelligent control system and method for a multi-split air-conditioning unit, belonging to the technical field of multi-split air-conditioning, comprising: a data acquisition unit, used for real-time monitoring of a communication bus of the multi-split air-conditioning unit to automatically acquire data of an indoor unit and an outdoor unit; an outdoor ambient temperature acquisition unit: used for acquiring outdoor ambient temperature data through communication with an outdoor unit; a control unit, used for analyzing data of the data acquisition unit and the outdoor ambient temperature acquisition unit, and generating instructions for controlling the operation of the air-conditioning; the present invention reasonably distributes the refrigerant flow according to the load demand of each indoor unit, ensures that the temperature of each room is uniform and meets personalized needs, improves the operating efficiency of the indoor unit by detecting the noise decibel value and light perception value, thereby reducing the workload of the outdoor unit, and effectively improves the utilization rate of energy and reduces the energy consumption of the overall unit by coordinating the optimized control of the indoor unit with the optimized control of the outdoor unit.
Description
Technical Field
The invention belongs to the technical field of multi-connected air conditioners, and particularly relates to an intelligent control system and method for a multi-connected air conditioner unit.
Background
The multi-connected air conditioning unit is an air conditioning system formed by configuring a plurality of indoor units with outdoor units. In order to timely meet the requirements of cold and heat loads of each room, the multi-split air conditioner adopts an electronic expansion valve to control the flow of the refrigerant supplied to coils of each indoor unit, and changes the circulation quantity of the refrigerant of the system by controlling a compressor.
The multi-connected air conditioning unit adopts one-to-many layout, and is generally provided with an outdoor unit, so that the occupied space is small. The connecting pipe is only provided with the refrigerant pipe and the condensate pipe, is flexible in arrangement and convenient in construction, can reduce the building floor height and the building cost, can realize independent control of each room, can carry out personalized adjustment according to the requirements of different areas, and provides more accurate temperature control.
With more and more energy-saving and consumption-reducing equipment, the multi-connected air conditioning unit automatically adjusts the rotating speed of the compressor according to the change of system load, changes the flow of the refrigerant, ensures that the unit operates with higher efficiency, reduces the energy consumption during load operation, and ensures lower annual operation cost;
when the existing multi-connected air conditioning unit controls the compressor to run, a fixed frequency or simple intermittent running mode is often adopted, the actual load requirement is difficult to accurately match, the problems of energy consumption waste, large indoor temperature fluctuation and the like are caused, particularly, the working efficiency of the outdoor unit is low, the cost is increased, the accurate control cannot be realized, and therefore, a novel intelligent control system and method of the multi-connected air conditioning unit are required to be developed to solve the existing problems.
Disclosure of Invention
The invention aims to provide an intelligent control system and method for a multi-connected air conditioning unit, which are used for solving the problem that the multi-connected air conditioning unit cannot operate efficiently.
In order to achieve the purpose, the invention provides the following technical scheme that the intelligent control system of the multi-connected air conditioning unit comprises:
The data acquisition unit is used for monitoring the communication bus of the multi-connected air conditioning unit in real time and automatically acquiring the data of the indoor unit and the outdoor unit;
the outdoor environment temperature acquisition unit is used for acquiring outdoor environment temperature data through communication with the outdoor unit;
The control unit is used for analyzing the data of the data acquisition unit and the outdoor environment temperature acquisition unit and generating an instruction for controlling the operation of the air conditioner;
the equipment file management unit is used for managing equipment file information of the air conditioning unit;
the data storage unit is used for storing air conditioning unit data, air conditioning control unit parameters and event records;
the data query unit is used for providing data query service;
And the parameter setting and inquiring unit is used for setting and inquiring uplink and downlink communication parameters of the air conditioning unit, controlling clock time synchronization and equipment reset.
Preferably, the real-time monitoring multi-connected air conditioning unit communication bus automatically collects data of the indoor unit and the outdoor unit, wherein the data comprise an indoor unit on-off state, an indoor unit set temperature, an indoor unit working mode, an indoor unit wind speed setting, an indoor unit return air temperature, an indoor unit current fault code, an indoor unit return air humidity, an outdoor unit rated power, an outdoor unit compressor current working frequency, an outdoor unit current fault code, an indoor unit room noise decibel value and an indoor unit room illumination intensity value.
Preferably, the control unit also receives an instruction issued by the intelligent energy unit or the master station, wherein the instruction comprises a control mode and a control instruction;
the control mode comprises shutdown and air conditioner temperature setting;
The control instruction comprises a control period parameter, and when the air-conditioner control unit receives a control release instruction or the control period is finished, the unit operation parameter is recovered according to the control parameter.
Preferably, the report of the air conditioning unit equipment comprises an air conditioning brand, an outdoor unit, the number of indoor units, communication addresses of the outdoor unit and the indoor unit, communication states of the outdoor unit and the indoor unit, a current fault code and report generation date and time;
if the equipment report of the accessed air conditioning unit needs to be updated, the following conditions are satisfied, namely, if any indoor unit fails to communicate, the connection state of the indoor unit is set as the disconnection, and the report is updated;
identifying a new outdoor unit address in the air conditioning unit communication, and updating a report;
and the indoor unit or the outdoor unit generates fault codes and updates the report.
Preferably, the data storage unit comprises a data storage module, an operation parameter and an air conditioning unit equipment report data, wherein the data storage module is used for storing current operation parameters and state data of all connected outdoor units and indoor units of the multi-connected air conditioning unit;
The parameter storage module is used for storing uplink and downlink communication parameters and air conditioning unit control parameters;
and the event record storage module is used for storing the air conditioner operation parameter control event record and the user interface air conditioner control event record.
Preferably, the device profile management unit includes:
The bus monitoring and equipment searching module is used for monitoring signals on the air conditioning unit communication bus and searching air conditioning unit equipment on the bus, and identifying communication addresses of the outdoor unit and the indoor unit;
and the air conditioning unit equipment report module is used for generating an air conditioning unit equipment report for the accessed air conditioning unit.
Preferably, the parameter setting and inquiring unit comprises a clock calling module, a timing module and a timing module, wherein the clock calling module is used for receiving clock calling and timing commands;
And the equipment resetting and initializing module is used for restarting the equipment by a hardware resetting instruction.
The invention also provides a control method of the intelligent control system of the multi-connected air conditioning unit, which is characterized by comprising the steps of acquiring acquisition data of a data acquisition unit and an outdoor environment temperature acquisition unit, acquiring corresponding sensor data according to the type of state change when the working state of an indoor unit is changed, and acquiring set sensor data in a set time period if the working state of the indoor unit is changed;
Acquiring archive information of the equipment archive management unit and the data storage unit and current operation data of the air conditioning unit;
analyzing the acquired data and the current operation data, obtaining control data, and then matching the control data with an operation mode to generate an instruction;
preferably, the operation modes include an outdoor unit operation mode and an indoor unit operation mode;
the outdoor unit operation modes comprise a rated mode, an economic mode and an energy-saving mode;
In the rated mode, the running power is the rated power;
In the economy mode, the running power is 30% of the rated power;
in the energy-saving mode, the running power is 50% of the rated power;
The indoor unit operation modes comprise a powerful mode and a sleep mode;
in the strong mode, the opening degree of the expansion valve is 20% of the standard opening degree, and the wind speed is the highest rotating speed;
in the sleep mode, the opening degree of the expansion valve is 1/10 of the aperture, and the wind speed is the lowest rotating speed.
Preferably, the analyzing the collected data and the current operation data to obtain the control data and then matching the operation mode includes:
When the outdoor temperature acquired by the outdoor environment temperature acquisition unit in the period from 7 points to 8 points is less than 10 degrees or more than 25 degrees, the operation mode of the outdoor unit is a rated mode;
When the outdoor temperature acquired by the outdoor environment temperature acquisition unit in the period from 7 points to 8 points is between 10 degrees and 20 degrees, the operation mode of the outdoor unit is an economic mode;
if the number of the working stations of the indoor units exceeds 2, and the average value of the set temperatures of all the indoor units is higher than 26 degrees or lower than 20 degrees, the running mode of the outdoor unit is a rated mode;
if the number of the working tables of the indoor units exceeds 60% of the total amount of the indoor units, switching the operation mode of the outdoor unit to a rated mode;
if the starting number of the indoor units is less than 20% of the total amount of the indoor units, the operation mode of the outdoor unit is switched to the economic mode;
If the starting number of the indoor units is less than 50% of the total amount of the indoor units, the operation mode of the outdoor unit is switched to the energy-saving mode;
When the current temperature of the indoor unit is less than 30% of the average value of the current temperatures of all the indoor units or the current temperature is greater than 30% of the average value, and when the state of the indoor unit actively adjusts the temperature value, the running mode of the indoor unit is switched to the powerful mode, and the powerful mode is exited until the current temperature of the indoor unit reaches the set temperature;
and when the indoor unit detects that the noise decibel value of the room of the current indoor unit is less than 30 decibels between 22 points and 8 points and the current light intensity is 1/2 of the previous light intensity, the running mode of the current indoor unit is a sleep mode.
The intelligent control system and the intelligent control method for the multi-connected air conditioning unit have the technical effects and advantages that parameters such as indoor temperature, humidity and personnel flow are collected in real time through the sensors arranged on the indoor units and the outdoor units, current and future load demands are comprehensively judged through the combination of historical data, the cooperative work of the indoor units and the outdoor units is realized through the centralized control system, the refrigerant flow is reasonably distributed according to the load demands of the indoor units, the uniform temperature of each room is ensured, the personalized demands are met, the operation efficiency of the indoor units can be improved through the detected noise decibel value and the light sensation value, the working load of the outdoor units is reduced, the energy utilization rate is effectively improved through the cooperation of the optimal control of the indoor units and the optimal control of the outdoor units, and the energy consumption of the whole unit is reduced.
Drawings
FIG. 1 is a system frame diagram of the present invention;
fig. 2 is a schematic layout view of an outdoor unit and an indoor unit according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of the method of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides an intelligent control system of a multi-connected air conditioning unit as shown in fig. 1 and 2, which comprises:
The data acquisition unit is used for monitoring the communication bus of the multi-connected air conditioning unit in real time to automatically acquire the data of the indoor unit and the outdoor unit, wherein the data comprise the on-off state of the indoor unit, the set temperature of the indoor unit, the working mode of the indoor unit, the set wind speed of the indoor unit, the return air temperature of the indoor unit and the current fault code of the indoor unit. The indoor unit is characterized by comprising an indoor unit, an outdoor unit compressor, a fault code, a noise decibel value and an illumination intensity value of an indoor unit room, wherein the fault code, the noise decibel value and the illumination intensity value of the indoor unit room exist in the outdoor unit, the indoor temperature, the humidity, the personnel flow and other parameters are collected in real time through sensors arranged on the indoor unit and the outdoor unit, and the current and future load demands are comprehensively judged by combining historical data.
The outdoor environment temperature acquisition unit is used for acquiring outdoor environment temperature data through communication with the outdoor unit;
the control unit is used for supporting an air conditioner operation parameter control instruction issued by the intelligent energy unit or the master station, wherein the instruction comprises a control mode including shutdown, air conditioner temperature setting and the like;
the control command comprises optional control time period parameters, and when the air-conditioning control unit receives a control release command or the control time period is over, the unit operation parameters can be recovered according to the requirements of the control parameters;
The indoor unit has the anti-misoperation measure, and the indoor unit is prevented from being started or the air conditioner temperature set value reaches the limit value when the indoor unit is controlled, wherein the temperature set value of the indoor unit is not started or the air conditioner temperature set value meets the limit value.
An equipment archive management unit for managing equipment archive information of an air conditioning unit, comprising:
And the bus monitoring and equipment searching module is used for monitoring signals on the air conditioning unit communication bus, searching air conditioning unit equipment on the bus and identifying communication addresses of the outdoor unit and the indoor unit.
The air conditioning unit equipment report module is used for generating an air conditioning unit equipment report for each accessed air conditioning unit, wherein the content of the equipment report comprises the following information of the number of the outdoor units and the indoor units, the communication addresses of the outdoor units and the indoor units, the communication states of the outdoor units and the indoor units, the current fault codes and the report generation date and time.
If the equipment report of the accessed air conditioning unit needs to be updated, the following conditions should be satisfied:
If any indoor unit fails to communicate, the connection state of the indoor unit is set as disconnection, and a report is updated;
identifying a new outdoor unit address in the air conditioning unit communication, and updating a report;
and the indoor unit or the outdoor unit generates fault codes and updates the report.
The data storage unit is used for storing air conditioning unit data, air conditioning control unit parameters, event records and the like, and the requirements are as follows:
And a data storage module:
1) The current operation parameters and state data of all the connected outdoor units and indoor units of the multi-connected air conditioning unit can be stored;
2) The running parameters of each indoor unit of the air conditioning unit before control can be stored for parameter recovery;
3) Air conditioning unit equipment report data can be stored.
And the parameter storage module is used for:
1) The uplink and downlink communication parameters can be stored;
2) Storing control parameters of the air conditioning unit;
3) The stored parameters are not lost after power failure.
Event record storage module:
1) The control event records of the air conditioner operation parameters can be stored;
2) The user interface air conditioner control event records can be stored;
3) The number of records which can be stored for each event is not less than 100, and the records are not lost after power failure.
The data query unit is used for providing data query service and comprises the following data:
a) Indoor and outdoor machine data of an air conditioning unit;
b) Reporting the air conditioning unit equipment;
c) The event records comprise air conditioner operation parameter control event records and user interface air conditioner control event records.
The parameter setting and inquiring unit is used for setting and inquiring uplink and downlink communication parameters of the air conditioning unit and control words of the air conditioning unit, and can support clock time synchronization and equipment reset;
The clock calling and timing module is used for receiving clock calling and timing commands, and the timing error is not more than 10s. Under the reference condition, the clock daily timing error of the air conditioner control unit is less than or equal to +/-1 s/d.
And the equipment resetting and initializing module is used for resetting the hardware instruction and restarting. It should be able to support event initialization instructions and empty all event record data.
The system comprises a communication interface module, a control unit and a control unit, wherein the communication interface module is in uplink communication with the comprehensive communication Internet of things module to support remote control of a master station and is connected with the state monitoring module in parallel to support local control of a user;
The communication interface module uplink communication at least supports an RS485 interface and a Modbus-RTU or MACnet MS/TP protocol, and can support a third party wireless module access (ZigBee, BLE, WIFI) and a TCP/UDP protocol;
The communication interface module supports at least an RS485 interface or an RS232 interface for downlink communication;
The communication interface module can be in one-to-one correspondence with the host of the air conditioning unit, and for the modularized air-cooled heat pump unit, the communication interface module is in correspondence with a cluster formed by a plurality of air-cooled heat pump air conditioning units in a common cycle;
the communication interface module can receive the command of the upper computer, namely the remote host, and convert the command into a command which can be identified by the operation control module of the central air conditioning unit to realize remote monitoring of the cold water (heat pump) unit, monitor and change the set temperature of the circulating water inlet and outlet, the set temperature value of the circulating water, the data acquisition and update period of the current temperature value should be less than 1 minute, the response time of the change of the set temperature value of the circulating water is less than 1 minute, monitor and change the current working current ratio of the host compressor, monitor the refrigerant pressure of the condenser and the evaporator of the host, monitor and change the on-off state and the operation mode, and monitor the operation fault of the unit.
Examples
The invention further provides a control method of the intelligent control system of the multi-connected air conditioning unit shown in fig. 3, which comprises the following steps:
Step1, acquiring acquisition data of a data acquisition unit and an outdoor environment temperature acquisition unit, and acquiring corresponding sensor data according to the type of state change when the working state of an indoor machine is changed, otherwise acquiring set sensor data in a set time period;
Step 2, acquiring archive information of the equipment archive management unit and the data storage unit and current operation data of the air conditioning unit;
step 3, analyzing the acquired data and the current operation data, obtaining control data, and then matching the control data with an operation mode to generate a control instruction;
the operation modes comprise an outdoor unit operation mode and an indoor unit operation mode;
the outdoor unit operation modes comprise a rated mode, an economic mode and an energy-saving mode;
In the rated mode, the running power is the rated power;
In the economy mode, the running power is 30% of the rated power;
in the energy-saving mode, the running power is 50% of the rated power;
The indoor unit operation modes comprise a powerful mode and a sleep mode;
in the strong mode, the opening degree of the expansion valve is 20% of the standard opening degree, and the wind speed is the highest rotating speed;
In the sleep mode, the opening degree of the expansion valve is 1/10 of the aperture, the wind speed is the lowest rotating speed, and the rotating speed of the compressor is intelligently regulated by utilizing the variable frequency controller according to the sensing result of the load demand. When the load demand increases, the compressor speed is increased to increase the cooling capacity, and when the load demand decreases, the compressor speed is decreased to reduce the cooling capacity waste.
Analyzing the acquired data and the current operation data, and obtaining the control data and then matching the operation mode comprises the following steps:
When the outdoor temperature acquired by the outdoor environment temperature acquisition unit in the period from 7 points to 8 points is less than 10 degrees or more than 25 degrees, the operation mode of the outdoor unit is a rated mode;
When the outdoor temperature acquired by the outdoor environment temperature acquisition unit in the period from 7 points to 8 points is between 10 degrees and 20 degrees, the operation mode of the outdoor unit is an economic mode;
if the number of the working stations of the indoor units exceeds 2, and the average value of the set temperatures of all the indoor units is higher than 26 degrees or lower than 20 degrees, the running mode of the outdoor unit is a rated mode;
if the number of the working tables of the indoor units exceeds 60% of the total amount of the indoor units, switching the operation mode of the outdoor unit to a rated mode;
if the starting number of the indoor units is less than 20% of the total amount of the indoor units, the operation mode of the outdoor unit is switched to the economic mode;
If the starting number of the indoor units is less than 50% of the total amount of the indoor units, the operation mode of the outdoor unit is switched to the energy-saving mode;
The current temperature of the indoor unit is less than 30% of the average value of the current temperatures of all the indoor units, or the current temperature is more than 30% of the average value, when the state of the indoor unit actively adjusts the temperature value, the running mode of the indoor unit is a powerful mode, and the indoor unit exits the powerful mode until the current temperature of the indoor unit reaches the set temperature;
And when the indoor unit detects that the noise decibel value of the room of the current indoor unit is less than 30 decibels between 22 points and 8 points and the current light intensity is 1/2 of the previous light intensity, the running mode of the current indoor unit is a sleep mode. The cooperative work of a plurality of indoor units and outdoor units is realized through the centralized control system. According to the load demand of each indoor unit, the refrigerant flow is reasonably distributed, the temperature of each room is ensured to be uniform and meet the personalized demand, the operation efficiency of the indoor unit can be realized by using the detected noise decibel value and the light sensation value, so that the working load of the outdoor unit is reduced, the energy utilization rate is effectively improved by the cooperation of the optimal control of the indoor unit and the optimal control of the outdoor unit, and the energy consumption of the whole unit is reduced.
It should be noted that the foregoing description is only a preferred embodiment of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood that modifications, equivalents, improvements and modifications to the technical solution described in the foregoing embodiments may occur to those skilled in the art, and all modifications, equivalents, and improvements are intended to be included within the spirit and principle of the present invention.
Claims (8)
1. An intelligent control system of a multi-connected air conditioning unit, comprising:
The data acquisition unit is used for monitoring the communication bus of the multi-connected air conditioning unit in real time and automatically acquiring the data of the indoor unit and the outdoor unit;
the outdoor environment temperature acquisition unit is used for acquiring outdoor environment temperature data through communication with the outdoor unit;
The control unit is used for analyzing the data of the data acquisition unit and the outdoor environment temperature acquisition unit and generating an instruction for controlling the operation of the air conditioning unit;
the equipment file management unit is used for managing equipment file information of the air conditioning unit;
the data storage unit is used for storing air conditioning unit data, air conditioning control unit parameters and event records;
the data query unit is used for providing data query service;
The parameter setting and inquiring unit is used for setting and inquiring uplink and downlink communication parameters of the air conditioning unit, controlling clock time synchronization and equipment reset;
The device profile management unit includes:
The bus monitoring and equipment searching module is used for monitoring signals on the air conditioning unit communication bus, searching air conditioning unit equipment on the bus and identifying communication addresses of the outdoor unit and the indoor unit;
The air conditioning unit equipment report module is used for generating an air conditioning unit equipment report for the accessed air conditioning unit;
The air conditioning unit equipment report comprises an air conditioning brand, the number of the outdoor units and the indoor units, communication addresses of the outdoor units and the indoor units, communication states of the outdoor units and the indoor units, current fault codes and date and time of report generation;
if the equipment report of the accessed air conditioning unit needs to be updated, the following conditions should be satisfied:
If any indoor unit fails to communicate, the connection state of the indoor unit is set as disconnection, and a report is updated;
identifying a new outdoor unit address in the air conditioning unit communication, and updating a report;
and the indoor unit or the outdoor unit generates fault codes and updates the report.
2. The intelligent control system of the multi-connected air conditioning unit according to claim 1, wherein the real-time monitoring of the communication bus of the multi-connected air conditioning unit automatically collects data of the indoor unit and the outdoor unit, and the data comprise an on-off state of the indoor unit, a set temperature of the indoor unit, an indoor unit working mode, a set wind speed of the indoor unit, a return air temperature of the indoor unit, a current fault code of the indoor unit, return air humidity of the indoor unit, rated power of the outdoor unit, a current working frequency of a compressor of the outdoor unit, a current fault code of the outdoor unit, noise decibel value and illumination intensity of a room of the indoor unit.
3. The intelligent control system of the multi-connected air conditioning unit according to claim 1, wherein the control unit is further used for receiving an instruction issued by an intelligent energy unit or a master station, and the instruction comprises a control mode and a control instruction;
the control mode comprises shutdown and air conditioner temperature setting;
The control instruction comprises a control period parameter, and when the air-conditioner control unit receives a control release instruction or the control period is finished, the unit operation parameter is recovered according to the control parameter.
4. The intelligent control system of a multi-connected air conditioning unit according to claim 1, wherein the data storage unit comprises:
The data storage module is used for storing current operation parameters and state data of all the connected outdoor units and indoor units of the multi-connected air conditioning unit, and operation parameters and air conditioning unit equipment report data of all the indoor units before control;
The parameter storage module is used for storing uplink and downlink communication parameters and control parameters of the air conditioning unit;
And the event record storage module is used for storing the control event record of the air conditioner operation parameters and the air conditioner control event record of the user interface.
5. The intelligent control system of a multi-connected air conditioning unit according to claim 1, wherein the parameter setting and inquiring unit comprises:
the clock calling and timing module is used for receiving clock calling and timing commands;
And the equipment resetting and initializing module is used for restarting the equipment by a hardware resetting instruction.
6. The control method of the intelligent control system of the multi-connected air conditioning unit according to any one of claims 1 to 5, comprising the steps of:
Acquiring acquisition data of the data acquisition unit and the outdoor environment temperature acquisition unit, and acquiring corresponding sensor data according to the type of state change when the working state of the indoor unit is changed, otherwise acquiring set sensor data in a set time period;
Acquiring archive information of the equipment archive management unit and the data storage unit and current operation data of the air conditioning unit;
Analyzing the acquired data and the current operation data, obtaining control data, and then matching the control data with the operation mode to generate an instruction.
7. The method of claim 6, wherein the operating modes include an outdoor unit operating mode and an indoor unit operating mode;
the outdoor unit operation modes comprise a rated mode, an economic mode and an energy-saving mode;
In the rated mode, the running power is the rated power;
In the economy mode, the running power is 30% of the rated power;
in the energy-saving mode, the running power is 50% of the rated power;
The indoor unit operation modes comprise a powerful mode and a sleep mode;
in the strong mode, the opening degree of the expansion valve is 20% of the standard opening degree, and the wind speed is the highest rotating speed;
in the sleep mode, the opening degree of the expansion valve is 1/10 of the aperture, and the wind speed is the lowest rotating speed.
8. The method of claim 7, wherein the analyzing the collected data and the current operation data to obtain the control data and then matching the operation mode comprises the following steps:
When the outdoor temperature acquired by the outdoor environment temperature acquisition unit in the period from 7 points to 8 points is less than 10 degrees or more than 25 degrees, the operation mode of the outdoor unit is a rated mode;
When the outdoor temperature acquired by the outdoor environment temperature acquisition unit in the period from 7 points to 8 points is between 10 degrees and 20 degrees, the operation mode of the outdoor unit is an economic mode;
if the number of the working stations of the indoor units exceeds 2, and the average value of the set temperatures of all the indoor units is higher than 26 degrees or lower than 20 degrees, the running mode of the outdoor unit is a rated mode;
if the number of the working tables of the indoor units exceeds 60% of the total amount of the indoor units, switching the operation mode of the outdoor unit to a rated mode;
if the starting number of the indoor units is less than 20% of the total amount of the indoor units, the operation mode of the outdoor unit is switched to the economic mode;
If the starting number of the indoor units is less than 50% of the total amount of the indoor units, the operation mode of the outdoor unit is switched to the energy-saving mode;
the current temperature of the indoor unit is less than 30% of the average value of the current temperatures of all the indoor units, or the current temperature is more than 30% of the average value, when the state of the indoor unit actively adjusts the temperature value, the running mode of the indoor unit is switched to the powerful mode, and the powerful mode is exited until the current temperature of the indoor unit reaches the set temperature;
and when the indoor unit detects that the noise decibel value of the room of the current indoor unit is less than 30 decibels between 22 points and 8 points and the current light intensity is 1/2 of the previous light intensity, the running mode of the current indoor unit is a sleep mode.
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| CN104422072A (en) * | 2013-09-05 | 2015-03-18 | 珠海格力电器股份有限公司 | Control method of multi-split air conditioner and control system of multi-split air conditioner |
| CN111895623A (en) * | 2020-08-12 | 2020-11-06 | 上海市建筑科学研究院有限公司 | Control method and system for multi-connected air-conditioning units |
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| CN203443023U (en) * | 2013-09-05 | 2014-02-19 | 珠海格力电器股份有限公司 | Control system of multi-split air conditioner |
| CN118361834B (en) * | 2024-06-11 | 2025-02-07 | 江苏征途电气科技有限公司 | An intelligent air conditioning control network suitable for load aggregation scheduling |
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| CN104422072A (en) * | 2013-09-05 | 2015-03-18 | 珠海格力电器股份有限公司 | Control method of multi-split air conditioner and control system of multi-split air conditioner |
| CN111895623A (en) * | 2020-08-12 | 2020-11-06 | 上海市建筑科学研究院有限公司 | Control method and system for multi-connected air-conditioning units |
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