CN112066520B - Intelligent building air conditioner charging and intelligent management and control system - Google Patents
Intelligent building air conditioner charging and intelligent management and control system Download PDFInfo
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- CN112066520B CN112066520B CN202010982550.3A CN202010982550A CN112066520B CN 112066520 B CN112066520 B CN 112066520B CN 202010982550 A CN202010982550 A CN 202010982550A CN 112066520 B CN112066520 B CN 112066520B
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- air
- conditioning unit
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- conditioning
- computer
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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
- F24F11/46—Improving electric energy efficiency or saving
- F24F11/47—Responding to energy costs
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D4/00—Tariff metering apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/60—Energy consumption
Abstract
The invention discloses an intelligent building air-conditioning charging and intelligent management and control system which comprises a central air conditioner, a plurality of air-conditioning units, a plurality of electronic expansion valves, a plurality of direct digital controllers, a plurality of variable air volume metering managers and a computer, wherein the air-conditioning units, the plurality of electronic expansion valves and the plurality of direct digital controllers are all connected with the computer, each air-conditioning unit is provided with an air-conditioning tail end device, and the electronic expansion valves are arranged on connecting pipelines of evaporators of the air-conditioning units and condensers of the central air conditioner. The intelligent building air conditioner charging and intelligent management and control system can accurately calculate the power consumption and the electricity charge of each air conditioner unit within a fixed time, can realize accurate regulation and control of each air conditioner unit, ensures reasonable distribution of the refrigerating capacity of a central air conditioner, realizes centralized management and control, and achieves the effects of energy conservation and emission reduction.
Description
Technical Field
The invention relates to the technical field of intelligent buildings, in particular to an intelligent building air conditioner charging and intelligent management and control system.
Background
The intelligent building is characterized in that a building is used as a platform, and the intelligent building has building equipment, office automation and communication network systems, and integrates structures, systems, services, management and optimized combination among the structures, the systems, the services and the management, and aims to provide a safe, efficient, comfortable and convenient building environment for people.
Energy management in intelligent management of buildings is one of key points, including management of energy such as electricity and water, and a central air conditioner is used as necessary electrical equipment of the buildings, so that the power consumption is high, and centralized management and control and optimization are urgently needed to achieve the purposes of energy conservation and emission reduction.
Disclosure of Invention
The invention aims to provide an intelligent building air conditioner charging and intelligent control system for carrying out centralized control on a central air conditioner, saving energy and reducing emission.
In order to solve the problems, the invention provides an intelligent building air-conditioning charging and intelligent management and control system which comprises a central air conditioner, a plurality of air-conditioning units, a plurality of electronic expansion valves, a plurality of direct digital controllers, a plurality of variable air volume metering managers and a computer, wherein the air-conditioning units, the electronic expansion valves and the direct digital controllers are all connected with the computer, each air-conditioning unit is provided with an air-conditioning tail end device, the electronic expansion valves are arranged on connecting pipelines of an evaporator of each air-conditioning unit and a condenser of the central air conditioner, the direct digital controllers are used for acquiring instantaneous air volume data of the corresponding air-conditioning tail end devices in real time, the air-conditioning metering managers are used for calculating the accumulated air volume data of the air-conditioning tail end devices in fixed time, and the computer is used for calculating the power consumption and the electric charge of the corresponding air-conditioning units in fixed time according to the accumulated air volume data, the computer is used for calculating the flow of the refrigerant needed by each air conditioning unit according to the size information of the working space corresponding to the air conditioning unit in the working state at present, and controlling the electronic expansion valve to adjust the flow of the refrigerant in each connecting pipeline.
As a further improvement of the present invention, the computer is further configured to calculate a refrigerant flow rate required by each air conditioning unit according to the size information of the working space corresponding to the air conditioning unit currently in the working state, and specifically includes: the computer firstly inquires and acquires the ID and the number of the air conditioning units in the current working state, inquires and acquires the working space K of the air conditioning units according to the ID of the air conditioning units, calculates the total space K of the air conditioning units in the current working state, and adjusts the electronic expansion valve corresponding to the current air conditioning unit according to the proportion of the working space K of the air conditioning units in the current working state to the total space K, so that the proportion of the refrigerant flow in the connecting pipeline corresponding to the current air conditioning unit to the total refrigerant flow generated by the central air conditioner is K/K.
As a further improvement of the present invention, a temperature sensor is installed in a working space of the air conditioning unit, the temperature sensor is connected to the computer, the computer obtains a temperature in the working space of the air conditioning unit currently in a working state in real time according to the temperature sensor, and when a difference between the temperature in the working space and an average working space temperature of the air conditioning unit currently in the working state is greater than a set value, the computer adjusts an electronic expansion valve corresponding to the air conditioning unit, and increases a refrigerant flow rate in a connecting pipeline corresponding to the air conditioning unit.
As a further improvement of the invention, a plurality of temperature sensors are arranged at different positions in the working space of each air conditioning unit, and the temperature in the current working space is determined by the median of the values on the temperature sensors.
As a further development of the invention, the number of temperature sensors in the working space of each air conditioning unit is at least three.
As a further development of the invention, the number of required temperature sensors is determined according to the size of the working space of each air conditioning unit.
As a further improvement of the present invention, the computer further obtains the opening degree of each electronic expansion valve in real time, calculates the operating time and the conducting area of each electronic expansion valve according to the opening degree of the electronic expansion valve, establishes a relational expression between the conducting area of the electronic expansion valve and the power consumption of the air conditioning unit within a fixed time, and establishes a relational expression between the conducting area of the electronic expansion valve and the instantaneous air volume data obtained by the direct digital controller according to the relation between the accumulated air volume data of the variable air volume air conditioning terminal device and the power consumption within the fixed time.
As a further improvement of the invention, the computer acquires the conduction area of the electronic expansion valve and instantaneous air volume data acquired by the direct digital controller in real time and compares the data with the established relational expression.
As a further improvement of the present invention, the computer sets different charging modes for the electricity charges according to different time periods, and calculates the electricity charges of the corresponding air conditioning units according to the different charging modes.
The invention has the beneficial effects that:
the intelligent building air conditioner charging and intelligent management and control system can accurately calculate the power consumption and the electricity charge of each air conditioner unit within a fixed time, can calculate the refrigerant flow required by each air conditioner unit according to the size information of the working space corresponding to the air conditioner unit in the working state at present, and can regulate the refrigerant flow in each connecting pipeline by controlling the electronic expansion valve. The air conditioner control system has the advantages that accurate regulation and control of each air conditioner unit are realized, reasonable distribution of the refrigerating capacity of the central air conditioner is guaranteed, centralized control is realized, and the effects of energy conservation and emission reduction are achieved.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic diagram of an intelligent building air-conditioning charging and intelligent management and control system according to a preferred embodiment of the invention.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
As shown in fig. 1, the intelligent building air-conditioning charging and intelligent management and control system in the preferred embodiment of the present invention includes a central air-conditioner, a plurality of air-conditioning units, a plurality of electronic expansion valves, a plurality of direct digital controllers, a plurality of variable air volume metering managers, and a computer.
The air conditioning unit, the electronic expansion valves and the direct digital controllers are all connected with the computer, each air conditioning unit is provided with a variable air volume air conditioning end device, and the electronic expansion valves are arranged on connecting pipelines of evaporators of the air conditioning units and condensers of the central air conditioners.
The direct digital controller is used for acquiring instantaneous air volume data of a corresponding variable air volume air conditioner terminal device in real time, the variable air volume metering manager is used for calculating accumulated air volume data of the variable air volume air conditioner terminal device within fixed time, and the computer is used for calculating power consumption and electricity charge of a corresponding air conditioner unit within fixed time according to the accumulated air volume data.
The computer is used for calculating the flow of the refrigerant needed by each air conditioning unit according to the size information of the working space corresponding to the air conditioning unit in the working state at present, and controlling the electronic expansion valve to adjust the flow of the refrigerant in each connecting pipeline.
The computer is further configured to calculate a refrigerant flow rate required by each air conditioning unit according to the size information of the working space corresponding to the air conditioning unit currently in the working state, and specifically includes: the computer firstly inquires and acquires the ID and the number of the air conditioning units in the current working state, inquires and acquires the working space K of the air conditioning units according to the ID of the air conditioning units, calculates the total space K of the air conditioning units in the current working state, and adjusts the electronic expansion valve corresponding to the current air conditioning unit according to the proportion of the working space K of the air conditioning units in the current working state to the total space K, so that the proportion of the refrigerant flow in the connecting pipeline corresponding to the current air conditioning unit to the total refrigerant flow generated by the central air conditioner is K/K.
In one embodiment, a temperature sensor is installed in a working space of the air conditioning unit, the temperature sensor is connected with the computer, the computer acquires the temperature in the working space of the air conditioning unit currently in a working state in real time according to the temperature sensor, and when the difference between the temperature in the working space and the average working space temperature of the air conditioning unit currently in the working state is greater than a set value, the computer adjusts an electronic expansion valve corresponding to the air conditioning unit and increases the refrigerant flow in a connecting pipeline corresponding to the air conditioning unit, so that the difference between the temperature in the working space and the average working space temperature of the air conditioning unit currently in the working state is within a set value range.
Furthermore, a plurality of temperature sensors are installed at different positions in the working space of each air conditioning unit, and the temperature in the current working space is determined through the median of the values on the temperature sensors. The reliability of the temperature data is ensured. The number of temperature sensors in the working space of each air conditioning unit is at least three.
Further, the number of required temperature sensors is determined according to the size of the working space of each air conditioning unit. When the working space of the air conditioning unit is larger, the temperature difference of different positions of the air conditioning unit can be larger, a plurality of sensors are needed for detection, and the contingency is reduced.
In one embodiment, the computer further obtains the opening degree of each electronic expansion valve in real time, calculates the working time and the conduction area of each electronic expansion valve according to the opening degree of the electronic expansion valve, establishes a relational expression between the conduction area of the electronic expansion valve and the power consumption of the air conditioning unit within a fixed time, and establishes a relational expression between the conduction area of the electronic expansion valve and the instantaneous air volume data obtained by the direct digital controller according to the relation between the accumulated air volume data of the variable air volume air conditioning terminal device and the power consumption within the fixed time. The conducting area of the electronic expansion valve is in direct proportion to the instantaneous air volume data acquired by the direct digital controller, so that the establishment of a relational expression is to determine a reasonable proportionality coefficient between the electronic expansion valve and the direct digital controller.
And the computer acquires the conduction area of the electronic expansion valve and the instantaneous air volume data acquired by the direct digital controller in real time and compares the data with the established relational expression. When the real-time proportionality coefficient and the reasonable proportionality coefficient of the electronic expansion valve and the direct digital controller are greatly different, the data of at least one device of the electronic expansion valve and the direct digital controller is proved to be wrong, which may be caused by device damage, so that a worker is reminded to overhaul, and the charging is prevented from being influenced. And if one of the devices is detected to be damaged, taking the data acquired by the other device as the basis for calculating the current power consumption of the air conditioning unit.
In one embodiment, the computer sets different electric charge charging modes according to different time periods, and calculates the electric charge of the corresponding air conditioning unit according to the different charging modes.
The intelligent building air conditioner charging and intelligent management and control system can accurately calculate the power consumption and the electricity charge of each air conditioner unit within a fixed time, can calculate the refrigerant flow required by each air conditioner unit according to the size information of the working space corresponding to the air conditioner unit in the working state at present, and can regulate the refrigerant flow in each connecting pipeline by controlling the electronic expansion valve. The air conditioner control system has the advantages that accurate regulation and control of each air conditioner unit are realized, reasonable distribution of the refrigerating capacity of the central air conditioner is guaranteed, centralized control is realized, and the effects of energy conservation and emission reduction are achieved.
The above embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (8)
1. The utility model provides an intelligent building air conditioner charging and intelligent management and control system which characterized in that, includes central air conditioning, a plurality of air conditioning unit, a plurality of electronic expansion valve, a plurality of direct digital controller, a plurality of variable air volume measurement manager and computer, air conditioning unit, a plurality of electronic expansion valve, a plurality of direct digital controller all with the computer is connected, every all install variable air volume air conditioner end device on the air conditioning unit, electronic expansion valve installs on the evaporimeter of each air conditioning unit and the connecting pipeline of central air conditioning's condenser, direct digital controller is used for obtaining corresponding variable air volume air conditioner end device's instantaneous air volume data in real time, variable air volume measurement manager is used for calculating the accumulative air volume data of variable air conditioner end device in the fixed time, the computer is used for according to the power consumption and the charges of air conditioning unit in the fixed time that the data calculation corresponds are amassed to the air volume, the computer is also used for calculating the flow of the refrigerant required by each air conditioning unit according to the size information of the working space corresponding to the air conditioning unit in the current working state, and regulating the flow of the refrigerant in each connecting pipeline by controlling the electronic expansion valve;
the computer also acquires the opening degree of each electronic expansion valve in real time, calculates the working time and the conduction area of each electronic expansion valve according to the opening degree of the electronic expansion valve, establishes a relational expression between the conduction area of the electronic expansion valve and the power consumption of the air conditioning unit within fixed time, and establishes a relational expression between the conduction area of the electronic expansion valve and the instantaneous air volume data acquired by the direct digital controller according to the relation between the accumulated air volume data and the power consumption of the variable air volume air conditioning terminal device within fixed time.
2. The intelligent building air-conditioning charging and intelligent control system according to claim 1, wherein the computer is further configured to calculate a refrigerant flow rate required by each air-conditioning unit according to the size information of the working space corresponding to the air-conditioning unit currently in the working state, and specifically includes: the computer firstly inquires and acquires the ID and the number of the air conditioning units in the current working state, inquires and acquires the working space K of the air conditioning units according to the ID of the air conditioning units, calculates the total space K of the air conditioning units in the current working state, and adjusts the electronic expansion valve corresponding to the current air conditioning unit according to the proportion of the working space K of the air conditioning units in the current working state to the total space K, so that the proportion of the refrigerant flow in the connecting pipeline corresponding to the current air conditioning unit to the total refrigerant flow generated by the central air conditioner is K/K.
3. The intelligent building air-conditioning charging and intelligent management and control system according to claim 1, wherein a temperature sensor is installed in a working space of the air-conditioning unit, the temperature sensor is connected with the computer, the computer acquires the temperature in the working space of the air-conditioning unit currently in a working state in real time according to the temperature sensor, and when the difference between the temperature in the working space and the average working space temperature of the air-conditioning unit currently in the working state is greater than a set value, the computer adjusts the electronic expansion valve corresponding to the air-conditioning unit and increases the refrigerant flow in the connecting pipeline corresponding to the air-conditioning unit.
4. The intelligent building air-conditioning billing and intelligent management and control system according to claim 3, wherein a plurality of temperature sensors are installed at different positions in the working space of each air-conditioning unit, and the temperature in the current working space is determined by the median of the values on the temperature sensors.
5. The intelligent building air-conditioning billing and intelligent management and control system of claim 4 wherein the number of temperature sensors in the working space of each air-conditioning unit is at least three.
6. The intelligent building air-conditioning billing and intelligent management and control system according to claim 3, wherein the number of required temperature sensors is determined according to the size of the working space of each air-conditioning unit.
7. The intelligent building air-conditioning charging and intelligent management and control system according to claim 1, wherein the computer obtains the conduction area of the electronic expansion valve and the instantaneous air volume data obtained by the direct digital controller in real time, and compares the data with the established relational expression.
8. The intelligent building air-conditioning charging and intelligent management and control system according to claim 1, wherein the computer sets different charging modes for electricity charges according to different time periods, and calculates the electricity charges of the corresponding air-conditioning units according to the different charging modes.
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| CN113137712B (en) * | 2021-04-08 | 2022-03-18 | 珠海格力电器股份有限公司 | Metering method for power consumption of electronic expansion valve and air conditioner |
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| CN105588284A (en) * | 2016-01-04 | 2016-05-18 | 广东美的暖通设备有限公司 | Method and device for controlling distribution of refrigerants of indoor units of air conditioning system |
| CN107314477A (en) * | 2017-07-04 | 2017-11-03 | 河南工程学院 | A kind of central air-conditioning refrigerating capacity intelligent dispensing system |
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2020
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| JPS57147023A (en) * | 1981-03-06 | 1982-09-10 | Hitachi Ltd | Measuring device for heat quantity |
| CN1782569A (en) * | 2004-11-30 | 2006-06-07 | 乐金电子(天津)电器有限公司 | Separated room load calculating method and electromagnetic expansion valve control method of central air conditioner |
| CN101592371A (en) * | 2008-05-29 | 2009-12-02 | 海尔集团公司 | Multi-split air conditioner |
| CN101619988A (en) * | 2009-07-29 | 2010-01-06 | 谭文胜 | Charging system of tail end box of variable air volume central air conditioner and charging method |
| CN102359794A (en) * | 2011-08-29 | 2012-02-22 | 深圳市锐钜科技有限公司 | Charging method and system for multi-connected central air conditioner external units |
| CN105588284A (en) * | 2016-01-04 | 2016-05-18 | 广东美的暖通设备有限公司 | Method and device for controlling distribution of refrigerants of indoor units of air conditioning system |
| CN107314477A (en) * | 2017-07-04 | 2017-11-03 | 河南工程学院 | A kind of central air-conditioning refrigerating capacity intelligent dispensing system |
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