CN113465096A - Multi-split outdoor unit operation control method and device and air conditioner - Google Patents

Multi-split outdoor unit operation control method and device and air conditioner Download PDF

Info

Publication number
CN113465096A
CN113465096A CN202110539780.7A CN202110539780A CN113465096A CN 113465096 A CN113465096 A CN 113465096A CN 202110539780 A CN202110539780 A CN 202110539780A CN 113465096 A CN113465096 A CN 113465096A
Authority
CN
China
Prior art keywords
air inlet
air outlet
heat exchange
capacity
outdoor unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202110539780.7A
Other languages
Chinese (zh)
Other versions
CN113465096B (en
Inventor
常卫峰
黄春
陈东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
Original Assignee
Ningbo Aux Electric Co Ltd
Ningbo Aux Intelligent Commercial Air Conditioning Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ningbo Aux Electric Co Ltd, Ningbo Aux Intelligent Commercial Air Conditioning Manufacturing Co Ltd filed Critical Ningbo Aux Electric Co Ltd
Priority to CN202110539780.7A priority Critical patent/CN113465096B/en
Publication of CN113465096A publication Critical patent/CN113465096A/en
Application granted granted Critical
Publication of CN113465096B publication Critical patent/CN113465096B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • 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
    • 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
    • F24F11/81—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the air supply to heat-exchangers or bypass channels
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides an outdoor unit operation control method and device of a multi-split air conditioner and an air conditioner, and relates to the technical field of air conditioners, wherein the control method is applied to an air conditioning system, the air conditioning system comprises an indoor unit and a plurality of outdoor unit modules, and the control method comprises the following steps: acquiring environmental parameters of each outdoor unit module, and calculating the grading coefficient of each outdoor unit module according to each environmental parameter; sorting the grading coefficients in sequence according to the numerical values, and grading according to a sorting result to obtain sequentially sorted grade parameters; and acquiring the total opening capacity of the indoor unit in the opening state, and controlling the opening sequence of each outdoor unit module according to the total opening capacity, the capacity of the single outdoor unit module and each grade parameter. The technical problem of outer quick-witted heat transfer effect poor of multi-connected air conditioner is solved.

Description

Multi-split outdoor unit operation control method and device and air conditioner
Technical Field
The invention relates to the technical field of air conditioners, in particular to an outdoor unit operation control method of a multi-split air conditioner and the air conditioner.
Background
In an air conditioning system, in the actual installation process of a multi-split air conditioner, a plurality of external machine modules are sometimes required to be combined for use, the multi-split air conditioner is limited by the actual installation space, the positions of all external machines in the air conditioning system and the flow conditions of ambient air are different, the air conditioning system starts the external machines in turn according to the working time, and the influence of the ambient flow conditions during actual heat exchange is not considered, so that the heat exchange effect of part of the external machine modules is poor; the heat exchange difference of each outdoor unit module is not considered during starting, and the outdoor unit can be frequently switched under individual conditions, so that the use experience of a user is influenced.
Disclosure of Invention
The first objective of the present invention is to provide a method for controlling the operation of an external unit of a multi-split air conditioner, so as to solve the technical problem that the heat exchange effect of the external unit of the multi-split air conditioner is poor.
The invention provides an outdoor unit operation control method of a multi-split air conditioner, which is applied to an air conditioning system, wherein the air conditioning system comprises an indoor unit and a plurality of outdoor unit modules, and the control method comprises the following steps:
acquiring environmental parameters of each external unit module, and calculating to obtain a grading coefficient of each external unit module according to the environmental parameters;
sorting the grading coefficients in sequence according to the numerical values, and grading according to a sorting result to obtain sequentially sorted grade parameters;
and acquiring the total opening capacity of the indoor unit in the opening state, and controlling the opening sequence of each outdoor unit module according to the total opening capacity, the capacity of the single outdoor unit module and each grade parameter.
According to the control method, not only are environmental factors of the outdoor unit modules considered, but also the total capacity of the opened indoor units and the capacity of the single outdoor unit module are considered, so that balance of heat exchange and operation life of the outdoor unit modules can be realized, the service life of the whole air conditioning system is prolonged, and energy consumption is reduced.
Further, the outer unit module comprises a condenser, and the condenser comprises an air inlet surface and an air outlet surface;
the environmental parameters include: the air inlet surface heat exchange weight coefficient, the air outlet surface heat exchange weight coefficient, the air inlet surface equivalent distance and the air outlet surface equivalent distance; the equivalent distance of the air inlet surface refers to the equivalent distance between the air inlet surface and the barrier, and the equivalent distance of the air outlet surface refers to the equivalent distance between the air outlet surface and the barrier;
the obtaining of the environmental parameters of the external machine modules and the calculating of the grade parameters of the external machine modules according to the environmental parameters include:
calculating an air inlet surface influence coefficient according to the air inlet surface heat exchange weight coefficient and the air inlet surface equivalent distance, wherein the air inlet surface influence coefficient is positively correlated to the air inlet surface heat exchange weight coefficient and the air inlet surface equivalent distance;
calculating to obtain an air outlet surface influence coefficient according to the air outlet surface heat exchange weight coefficient and the air outlet surface equivalent distance, wherein the air outlet surface influence coefficient is positively correlated to the air outlet surface heat exchange weight coefficient and the air outlet surface equivalent distance;
and calculating to obtain the grading coefficient of the outer machine module according to the air inlet surface influence coefficient and the air outlet surface influence coefficient, sequencing the grading coefficients in sequence according to the numerical values, and grading according to the sequencing result to obtain the sequentially sequenced grade parameters.
In the step, the heat exchange weight coefficients of the air inlet and outlet surfaces and the influence of the obstacles on the heat exchange effect are considered, the heat exchange capacity of the corresponding outer machine modules is graded according to the heat exchange weight coefficients of the air inlet and outlet surfaces and the position relation between the obstacles and the air inlet and outlet surfaces, the heat exchange capacity of each outer machine module is quantized through corresponding grade parameters, and therefore the corresponding outer machine modules can be controlled to be opened more reasonably according to the actual demand load of the air conditioning system.
Further, the calculation method of the equivalent distance of the air inlet surface comprises the following steps: calculating to obtain an air inlet surface proportionality coefficient according to the total area of the air inlet surface and the projection area of the barrier projected to the air inlet surface, and calculating to obtain an air inlet surface equivalent distance according to the air inlet surface proportionality coefficient, a preset distance of the air inlet surface and a linear distance between the barrier and the air inlet surface;
the method for calculating the equivalent distance of the air outlet surface comprises the following steps: calculating to obtain an air outlet face proportion coefficient according to the total area of the air outlet face and the projection area of the barrier projected to the air outlet face, and calculating to obtain an air outlet face equivalent distance according to the air outlet face proportion coefficient, a preset distance of the air outlet face and a linear distance between the barrier and the air outlet face.
The calculation method in the step can show more accurate influence factors of the obstacles on the heat exchange effect of the external module.
Further, the calculation formula of the equivalent distance of the air inlet surface is as follows: l isj＝γj*Ljz+(1-γj)*Lj0(ii) a Wherein L isjIs the equivalent distance of the air inlet surface, LjzIs the linear distance between the barrier and the air inlet surface, Lj0For presetting distance, L, of air intake surfacejz＜Lj0，γjIs the air intake surface proportionality coefficient;
the calculation formula of the equivalent distance of the air outlet surface is as follows: l isc＝γc*Lcz+(1-γc)*Lc0(ii) a Wherein L iscIs an equivalent distance of the air outlet surface, LczIs the linear distance between the barrier and the air outlet surface, Lc0For the air-out surface with a predetermined distance, Lcz＜Lc0，γcIs the air outlet face proportionality coefficient.
This step can further quantify the influence factor of the equivalent distance of the obstacle.
Further, the calculation method of the heat exchange weight coefficient of the air inlet surface comprises the following steps: calculating to obtain an air inlet face heat exchange weight coefficient according to the ratio of the effective windward heat exchange area of the air inlet face to the effective windward heat exchange area of the total air inlet face, wherein the effective windward heat exchange area of the air inlet face is the visible area of a condenser of the air inlet face;
the method for calculating the heat exchange weight coefficient of the air outlet surface comprises the following steps: and calculating to obtain a heat exchange weight coefficient of the air outlet face according to the ratio of the effective windward heat exchange area of the air outlet face to the total air outlet area, wherein the effective windward heat exchange area of the air outlet face is the visible area of the condenser of the air outlet face.
The calculation method in the step considers the relation between each air inlet surface and each air outlet surface and the total air inlet surface and the total air outlet surface, and accordingly a more objective grade of the heat exchange capacity of the outer machine module is obtained.
Further, the calculation formula of the heat exchange weight coefficient of the air inlet surface is as follows: alpha is alphaj＝αj0*Ajy/AjzWherein alpha isjIs the heat exchange weight coefficient of the air inlet surface, alphaj0Is a heat exchange weight scale factor of the total air inlet surface, AjyIs the effective windward heat exchange area of the air inlet surface, AjzThe effective windward heat exchange area of the total air inlet surface;
the calculation formula of the air outlet surface heat exchange weight coefficient is as follows: alpha is alphac＝αc0*Acy/AczWherein alpha iscIs the heat exchange weight coefficient of the air outlet surface, alphac0Is a heat exchange weight scale factor of the total air outlet surface, AcyEffective windward heat exchange area of air outlet face, AczThe total air outlet area is obtained;
wherein alpha isj0+αc0＝1。
This step can be with the concrete influence factor quantization of each air inlet face, air-out face.
Further, the calculation formula of the air inlet surface influence coefficient is as follows: etaj＝αj*Lj；
The calculation formula of the air outlet surface influence coefficient is as follows: etac＝αc*Lc；
The calculation formula of the grading coefficient of the outer machine module is as follows: w ═ ηj+ηc；
Sorting according to the grading coefficients from high to low, and correspondingly obtaining the grading parameters which are sequentially arranged from small to large;
wherein eta isjIs the influence coefficient of the air intake surface, etacIs the influence coefficient of the air outlet surface, w is the grading coefficient of the outer machine module, alphajIs the heat exchange weight coefficient of the air inlet surface, alphacIs the heat exchange weight coefficient of the air outlet surface, LjIs the equivalent distance of the air inlet surface, LcIs the equivalent distance of the air outlet surface.
By the aid of the method, the grade parameters of the heat exchange capacity of each external machine module are more objective.
Further, the obtaining of the total opening capacity when the internal unit is in the open state, and controlling the opening sequence of each external unit module according to the total opening capacity, the capacity of the single external unit module, and each of the class parameters includes:
if the total opening capacity is smaller than a first preset capacity, controlling the opening sequence of the outer machine modules to be as follows: sequentially controlling to start the corresponding external machine modules according to the sequence of the grade parameters from high to low;
if the total opening capacity is larger than the second preset capacity and smaller than the third preset capacity, controlling the opening sequence of the outer machine modules to be as follows: sequentially controlling to open each corresponding external machine module according to the sequence of the grade parameters from low to high;
the first preset capacity is smaller than the second preset capacity and smaller than the single outdoor unit module capacity and smaller than the third preset capacity.
According to the step, the opening sequence of the outdoor unit modules is controlled according to the total capacity (total load required by the air conditioning system) of the opened indoor units, the capacity of the single outdoor unit module and the grade parameters of the outdoor unit modules, so that the heat exchange quantity and the service life of the outdoor unit modules are balanced, the service life of the whole air conditioning system is prolonged, and the energy consumption is reduced.
Further, the obtaining of the total opening capacity when the internal unit is in the open state, and controlling the opening sequence of each external unit module according to the total opening capacity, the capacity of the single external unit module, and each of the class parameters includes:
the number of the external machine modules is at least three, if the total opening capacity is larger than a first preset capacity and smaller than a second preset capacity, the opening sequence of each external machine module is controlled as follows: firstly, controlling to start an external machine module corresponding to the intermediate grade parameter, and then controlling to start an external machine module corresponding to the high grade parameter or the low grade parameter;
the first preset capacity is smaller than the second preset capacity and smaller than the capacity of the single outdoor unit module;
the low-level parameter is smaller than the intermediate-level parameter and smaller than the high-level parameter.
According to the step, the opening sequence of the outdoor unit modules is controlled according to the total capacity (total load required by the air conditioning system) of the opened indoor units, the capacity of the single outdoor unit module and the grade parameters of the outdoor unit modules, so that the heat exchange quantity and the service life of the outdoor unit modules are balanced, the service life of the whole air conditioning system is prolonged, and the energy consumption is reduced.
Further, the controlling and opening the external unit module corresponding to the intermediate level parameter includes: if at least two external machine modules corresponding to the intermediate level parameters are available, controlling to start the corresponding external machine modules according to the sequence of less accumulated running time to more accumulated running time;
then, the starting of the outdoor unit module corresponding to the high-level parameter or the low-level parameter includes: judging whether the accumulated running time of the outdoor unit module corresponding to the high-level parameters is less than the accumulated running time of the outdoor unit module corresponding to the low-level parameters; if so, controlling to start the external machine module corresponding to the high-grade parameter, and then controlling to start the external machine module corresponding to the low-grade parameter; if not, the outdoor unit module corresponding to the low-grade parameters is controlled to be started firstly, and then the outdoor unit module corresponding to the high-grade parameters is controlled to be started.
In the step, the statistical function of the accumulated running time of the external machine module is adopted, and when the running time of the external machine module is obviously different, the forced balanced compensation operation is carried out, so that the difference of heat exchange effects and the service life are balanced, the switching times are reduced, and the energy consumption is reduced.
A second object of the present invention is to provide an operation control device for an outdoor unit of a multi-split air conditioner, which is applied to an air conditioning system, and includes:
the acquisition module is used for acquiring the environmental parameters of each external unit module and the total opening capacity of the internal unit in the opening state;
the calculation module is used for calculating the grade parameters of the external machine modules according to the environment parameters;
and the control module is used for controlling the opening sequence of each outer machine module according to the total opening capacity, the capacity of a single outer machine module and each grade parameter.
A third object of the present invention is to provide an air conditioner, comprising: the multi-split air conditioner comprises a computer readable storage medium storing a computer program, a processor and an outdoor unit operation control device of the multi-split air conditioner, wherein the computer program is read by the processor and run to realize the outdoor unit operation control method of the multi-split air conditioner.
A fourth objective of the present invention is to provide a computer-readable storage medium, where a computer program is stored, and when the computer program is read and executed by a processor, the method for controlling the operation of an external unit of a multi-split air conditioner is implemented.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic flow chart illustrating an operation control method of an external unit of a multi-split air conditioner according to an embodiment of the present invention;
fig. 2 is another schematic flow chart illustrating an operation control method of an external unit of a multi-split air conditioner according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an operation control device of an outdoor unit of a multi-split air conditioner according to an embodiment of the present invention.
Description of reference numerals:
100-an acquisition module; 200-a calculation module; 300-control module.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the invention provides an operation control method of an outdoor unit of a multi-split air conditioner, which is applied to an air conditioning system, wherein the air conditioning system comprises an indoor unit and a plurality of outdoor unit modules, and the control method comprises the following steps:
s102, obtaining the environmental parameters of each outdoor unit module, and calculating to obtain the grading coefficient of each outdoor unit module according to each environmental parameter; and sequencing the grading coefficients according to the numerical values, and grading according to the sequencing result to obtain sequentially sequenced grade parameters.
The outdoor unit module comprises a condenser, the condenser comprises an air inlet surface and an air outlet surface, the air inlet surface can comprise a plurality of air inlet surfaces, and the air outlet surface can also comprise a plurality of air outlet surfaces.
The environmental parameters include: the air inlet surface heat exchange weight coefficient, the air outlet surface heat exchange weight coefficient, the air inlet surface equivalent distance and the air outlet surface equivalent distance; the equivalent distance of the air inlet surface refers to the equivalent distance between the air inlet surface and the obstacle, and the equivalent distance of the air outlet surface refers to the equivalent distance between the air outlet surface and the obstacle.
And S104, acquiring the total opening capacity of the indoor unit in the opening state, and controlling the opening sequence of each outdoor unit module according to the total opening capacity, the capacity of the single outdoor unit module and each grade parameter.
Wherein, the grade parameter refers to the grade mark of the corresponding outer machine module.
In the embodiment of the invention, the influence of the environmental parameters of the outdoor unit modules on the heat exchange effect is considered, the influence comprises the heat exchange weight coefficient of each air inlet surface, the heat exchange weight coefficient of the air outlet surface, the distance from the air inlet surface to the obstacle and the distance from the air outlet surface to the obstacle, and the environmental factors can influence the surrounding air flowing state, namely the heat exchange efficiency. Namely: the control method provided by the embodiment of the invention not only considers the environmental factors of each outer machine module, but also considers the total capacity of the opened inner machine and the capacity of the single outer machine module, thereby realizing the balance of heat exchange and operation life of the outer machine module, prolonging the service life of the whole air conditioning system and reducing the energy consumption.
In this embodiment, in step S102, the environment parameters of the external unit modules are obtained, and the grading coefficients of the external unit modules are calculated according to the environment parameters; the grading coefficients are sequentially sorted according to the numerical value, and graded according to the sorting result to obtain sequentially sorted grade parameters, and the grading parameter sorting method comprises the following steps:
(1) and calculating to obtain an air inlet surface influence coefficient according to the air inlet surface heat exchange weight coefficient and the air inlet surface equivalent distance, wherein the air inlet surface influence coefficient is positively related to the air inlet surface heat exchange weight coefficient and the air inlet surface equivalent distance.
The method for calculating the equivalent distance of the air inlet surface comprises the following steps: calculating to obtain an air inlet surface proportionality coefficient according to the total area of the air inlet surface and the projection area of the barrier projected to the air inlet surface, and calculating to obtain an air inlet surface equivalent distance according to the air inlet surface proportionality coefficient, a preset distance of the air inlet surface and a linear distance between the barrier and the air inlet surface. Specifically, the calculation formula of the equivalent distance of the air inlet surface is as follows: l isj＝γj*Ljz+(1-γj)*Lj0(ii) a Wherein L isjIs the equivalent distance of the air inlet surface, LjzIs the linear distance between the barrier and the air inlet surface, Lj0For presetting distance, L, of air intake surfacejz＜Lj0，γjIs the proportional coefficient of the air inlet surface.
It should be noted that, when there are a plurality of air inlet surfaces, the total area of the air inlet surfaces is the sum of the areas of the air inlet surfaces, in this embodiment, the total area of the air inlet surfaces is the total air inlet surface; the projection area of the barrier projected to the air inlet surface refers to the projection area of the barrier projected to the corresponding air inlet surface, and the air inlet surface proportionality coefficient of each air inlet surface is the ratio of the projection area of the barrier projected to the corresponding air inlet surface to the total area of the air inlet surfaces; preset distance L of air inlet surfacej0The value range is as follows: 40-100cm, when there is no obstacle, Ljz＝Lj0。
Calculation of heat exchange weight coefficient of air inlet surfaceThe method comprises the following steps: and calculating according to the ratio of the effective windward heat exchange area of the air inlet face to the effective windward heat exchange area of the total air inlet face to obtain the heat exchange weight coefficient of the air inlet face, wherein the effective windward heat exchange area of the air inlet face is the visible area of the condenser of the air inlet face. Specifically, the calculation formula of the heat exchange weight coefficient of the air inlet surface is as follows: alpha is alphaj＝αj0*Ajy/AjzWherein alpha isjIs the heat exchange weight coefficient of the air inlet surface, alphaj0Is a heat exchange weight scale factor of the total air inlet surface, AjyIs the effective windward heat exchange area of the air inlet surface, AjzIs the effective windward heat exchange area of the total air inlet surface.
(2) And calculating to obtain an air outlet face influence coefficient according to the air outlet face heat exchange weight coefficient and the air outlet face equivalent distance, wherein the air outlet face influence coefficient is positively related to the air outlet face heat exchange weight coefficient and the air outlet face equivalent distance.
The method for calculating the equivalent distance of the air outlet surface comprises the following steps: calculating to obtain an air outlet face proportion coefficient according to the total area of the air outlet face and the projection area of the barrier projected to the air outlet face, and calculating to obtain an air outlet face equivalent distance according to the air outlet face proportion coefficient, a preset distance of the air outlet face and a linear distance between the barrier and the air outlet face. Specifically, the calculation formula of the air outlet face equivalent distance is as follows: l isc＝γc*Lcz+(1-γc)*Lc0(ii) a Wherein L iscIs an equivalent distance of the air outlet surface, LczIs the linear distance between the barrier and the air outlet surface, Lc0For the air-out surface with a predetermined distance, Lcz＜Lc0，γcIs the air outlet face proportionality coefficient.
It should be noted that, when there are a plurality of air outlet surfaces, the total area of the air outlet surfaces is the sum of the areas of the air outlet surfaces, and in this embodiment, the total area of the air outlet surfaces is the total air outlet surface; the projection area of the barrier projected to the air outlet surface refers to the projection area of the barrier projected to the corresponding air outlet surface, and the air outlet surface proportion coefficient of each air outlet surface is the ratio of the projection area of the barrier projected to the corresponding air outlet surface to the total area of the air outlet surfaces; preset distance L of air outlet surfacec0The value range is as follows: 40-100cm, when there is no obstacle, Lcz＝Lc0。
The method for calculating the heat exchange weight coefficient of the air outlet surface comprises the following steps: and calculating according to the ratio of the effective windward heat exchange area of the air outlet face to the total air outlet area to obtain the heat exchange weight coefficient of the air outlet face, wherein the effective windward heat exchange area of the air outlet face is the visible area of the condenser of the air outlet face. Specifically, the calculation formula of the air outlet surface heat exchange weight coefficient is as follows: alpha is alphac＝αc0*Acy/AczWherein alpha iscIs the heat exchange weight coefficient of the air outlet surface, alphac0Is a heat exchange weight scale factor of the total air outlet surface, AcyEffective windward heat exchange area of air outlet face, AczIs the total air outlet area.
Wherein alpha isj0+αc0＝1。
According to the control method provided by the embodiment, the heat exchange weight coefficients of the air inlet and outlet surfaces and the influence of the barrier on the heat exchange effect are considered, the heat exchange capacity of the corresponding outer machine module is graded according to the heat exchange weight coefficients of the air inlet and outlet surfaces and the position relation between the barrier and the air inlet and outlet surfaces, the heat exchange capacity of each outer machine module is quantized through corresponding grade parameters, and therefore the corresponding outer machine modules can be controlled to be opened more reasonably according to the actual demand load of the air conditioning system. The calculation formula can express more accurate influence factors of the heat exchange effect of the external module caused by the obstacles.
The relation between each air inlet surface and each air outlet surface and the relation between each air inlet surface and each air outlet surface are considered, so that a more objective grade of the heat exchange capacity of the outer machine module is obtained, and specific influence factors of each air inlet surface and each air outlet surface can be quantized.
(3) And calculating to obtain the grading coefficient of the outer machine module according to the air inlet surface influence coefficient and the air outlet surface influence coefficient, sequencing the grading coefficients in sequence according to the numerical values, and grading according to the sequencing result to obtain the sequentially sequenced grade parameters.
The calculation formula of the air inlet surface influence coefficient is as follows: etaj＝αj*Lj；
The calculation formula of the air outlet surface influence coefficient is as follows: etac＝αc*Lc；
The calculation formula of the grading coefficient of the outdoor unit module is as follows: w ═ ηj+ηc；
And sorting according to the grading coefficients from high to low, correspondingly obtaining grade parameters which are sequentially arranged from small to large, and obtaining the grade parameters of the more objective heat exchange capacity of each external machine module. The higher the grading coefficient is, the smaller the influence on the heat exchange effect is, the higher the heat exchange efficiency is, so that the heat exchange efficiency of each outdoor unit module is graded, and further, the heat exchange is carried out by selecting a proper outdoor unit module according to the total opening capacity required by the internal gas opening state, so that the optimal matching use state of the outdoor unit modules is realized.
Wherein eta isjIs the influence coefficient of the air intake surface, etacIs the influence coefficient of the air outlet surface, w is the grading coefficient of the outer machine module, alphajIs the heat exchange weight coefficient of the air inlet surface, alphacIs the heat exchange weight coefficient of the air outlet surface, LjIs the equivalent distance of the air inlet surface, LcIs the equivalent distance of the air outlet surface.
It should be noted that the grading coefficient of the external unit module is the sum of the influence coefficient of each air inlet surface and the influence coefficient of each air outlet surface.
In this embodiment, in step S104, the step of obtaining the total opening capacity when the internal machine is in the open state, and controlling the opening sequence of each external machine module according to the total opening capacity, the capacity of the single external machine module, and each grade parameter includes the following steps:
(a) if the total opening capacity is smaller than the first preset capacity, controlling the opening sequence of each outer machine module to be as follows: and sequentially controlling to open the corresponding external machine modules according to the sequence of the grade parameters from high to low.
(b) If the total opening capacity is larger than the second preset capacity and smaller than the third preset capacity, controlling the opening sequence of each outer machine module to be as follows: and sequentially controlling to open each corresponding external machine module according to the sequence of the grade parameters from low to high.
(c) The number of the external machine modules is at least three, if the total opening capacity is larger than the first preset capacity and smaller than the second preset capacity, the opening sequence of each external machine module is controlled as follows: and firstly, controlling to start the external machine module corresponding to the intermediate grade parameter, and then controlling to start the external machine module corresponding to the high grade parameter or the low grade parameter.
The first preset capacity is smaller than the second preset capacity, and the capacity of the single outdoor unit module is smaller than the third preset capacity; the low-level parameter is smaller than the intermediate-level parameter and smaller than the high-level parameter.
When the total opening capacity is smaller than the first preset capacity, the total required capacity is small when the internal unit is in an opening state, and at the moment, the heat exchange requirement can be met only by opening the external unit modules with general heat exchange effects, so that the corresponding external unit modules can be sequentially controlled to be opened according to the sequence of the grade parameters from high to low; when the total opening capacity is larger than the second preset capacity and smaller than the third preset capacity, the total required capacity is larger when the internal unit is in an opening state, and the external unit modules with better heat exchange effect need to be opened to meet the heat exchange requirement, so that the corresponding external unit modules can be sequentially controlled to be opened according to the sequence of the grade parameters from low to high; when the total starting capacity is between the first preset capacity and the second preset capacity, the required total capacity is moderate when the internal machine is in a starting state, at the moment, the external machine module corresponding to the intermediate grade parameter is started preferentially to meet the heat exchange requirement, so that the external machine module corresponding to the intermediate grade parameter can be controlled to be started first, then the external machine module corresponding to the high grade parameter or the low grade parameter is controlled to be started, at the moment, the external machine module of the high grade parameter and the external machine module of the low grade parameter can be started alternately, the starting sequence can take the accumulated running time as a consideration factor, the external machine module with shorter accumulated time is started preferentially, the running time of the external machine module can be balanced as much as possible, the problem that the service life of a single external machine is influenced due to long-time starting is avoided, even the integral service life of the whole system is influenced, and the maintenance times are increased.
According to the steps, the opening sequence of the outdoor unit modules is controlled according to the total capacity (total load required by the air conditioning system) of the opened indoor units, the capacity of the single outdoor unit module and the grade parameters of the outdoor unit modules, so that the heat exchange quantity and the service life of the outdoor unit modules are balanced, the service life of the whole air conditioning system is prolonged, and the energy consumption is reduced.
In step (c) of this embodiment, the step of controlling to open the external unit module corresponding to the intermediate level parameter includes: and if at least two external machine modules corresponding to the intermediate level parameters exist, controlling to open the corresponding external machine modules according to the sequence of the accumulated running time from less to more.
In step (c) of this embodiment, then, turning on the external unit module corresponding to the high-level parameter or the low-level parameter includes: judging whether the accumulated running time of the outdoor unit module corresponding to the high-level parameters is less than the accumulated running time of the outdoor unit module corresponding to the low-level parameters; if so, controlling to start the external machine module corresponding to the high-grade parameter, and then controlling to start the external machine module corresponding to the low-grade parameter; if not, the outdoor unit module corresponding to the low-grade parameters is controlled to be started firstly, and then the outdoor unit module corresponding to the high-grade parameters is controlled to be started. In the step, the statistical function of the accumulated running time of the external machine module is adopted, and when the running time of the external machine module is obviously different, the forced balanced compensation operation is carried out, so that the difference of heat exchange effects and the service life are balanced, the switching times are reduced, and the energy consumption is reduced.
As shown in fig. 2, another method for controlling operation of an external unit of a multi-split air conditioner is, for example, a multi-split air conditioner includes three external unit modules, and the method includes the following steps:
first, the external machine modules are numbered in a hierarchical manner, and the specific operation method is as follows.
When the three outer machine modules are installed, according to the circulation condition of ambient air, the environmental parameters include three air inlet surfaces and one air outlet surface of the condenser and the distance from each air inlet surface and each air outlet surface to the barrier, wherein the air outlet surface in the embodiment is an air outlet top surface.
And determining the heat exchange weight coefficient alpha of each air inlet surface and each air outlet surface according to the heat exchange flow area of each air inlet surface and each air outlet surface. The air outlet surface heat exchange weight coefficient is as follows: alpha is alphac＝αcdAnd (5) the heat exchange weight scale factor of the total air inlet surface is 0.5. The visible area of the condenser of each air inlet surface is used as the effective windward heat exchange area. And distributing the weights of the air inlet surfaces according to the effective windward heat exchange area of each air inlet surface, which accounts for the proportion of the effective windward heat exchange area of the total air inlet surface. For example: effective windward exchange of one air inlet surface aThe heat area accounts for 30 percent of the effective windward heat exchange area of the total air inlet surface, then alphajaIs 0.15.
In the environmental parameters, the linear distance between each air inlet and outlet surface and the barrier is within a preset distance range L0＝Lj0＝Lc0(value is 40-100cm), and the equivalent distance L between the barrier and each air inlet and outlet surfacejAnd Lc. If there is no obstacle, take Lj＝Lc＝L0. And the projected area of the barrier on the corresponding air inlet and outlet surface is smaller than the total area of the corresponding air inlet and outlet surface, and the projected area is used as partial shielding treatment to calculate the equivalent distance. For example: the ratio of the projected area of the barrier on the air inlet and outlet surfaces to the total area of the surfaces is gammaj、γcThe linear distances between the barrier in the air inlet and outlet face direction and the air inlet and outlet face are respectively Ljz、LczCalculating the equivalent distance of the surface, Lj＝γj*Ljz+ (1-γj)*Lj0，Lc＝γc*Lcz+(1-γc)*Lc0。
Marking three air inlet surfaces as a, b and c, marking the air outlet surface as d, and respectively setting the equivalent distances of the three air inlet surfaces and the three air outlet surfaces as:
Lja＝γja*Ljza+(1-γja)*Lj0；
Ljb＝γjb*Ljzb+(1-γjb)*Lj0；
Ljc＝γjc*Ljzc+(1-γjc)*Lj0；
Lcd＝γcd*Lczd+(1-γcd)*Lc0；
the weight coefficients of the three air inlet surfaces a, b and c and the air outlet surface d are respectively as follows: alpha is alphaja、αjb、αjc、αcd。
As shown in table 1 below, the calculation of the values is completed to obtain the influence coefficients of each surface, and the influence coefficients are added to obtain the grading coefficient w of the corresponding external unit module, where w is η ═ wa+ηb+ηc+ηd。
Table 1: and the outdoor unit module environment parameter calculation table.
Figure BDA0003071210450000121
Figure DEST_PATH_IMAGE001
According to the method and the table, the grading coefficients are calculated, then, the grading coefficients w are compared, and the first grade G1, the second grade G2 and the third grade G3 are numbered from high to low in sequence, so that grade parameters which are arranged from small to large are generated, namely G1, G2 and G3 are grade parameters of corresponding external machine modules.
A flowchart for controlling the starting sequence of each external unit module according to the grading coefficient w and the grading parameter is shown in fig. 2.
S201, starting an internal machine;
s202, judging whether the starting capacity of the internal unit is less than or equal to 105% of the capacity of the single external unit module, namely judging: whether the total capacity of the internal machine is less than or equal to 105% of the capacity of the single external machine module is established, if so, continuing to execute the step S203, and if not, continuing to execute the step S211;
s203, judging whether the starting capacity of the internal unit is less than or equal to 70% of the capacity of the single external unit module, namely judging: if the total capacity of the internal machine starting is less than or equal to 70% of the capacity of the single external machine module, continuing to execute the step 204 if the total capacity of the internal machine starting is equal to or less than 70%, and executing the step S205 if the total capacity of the internal machine starting is not equal to or less than 70%;
s204, the opening sequence of the outer machine modules is as follows: g3 → G2 → G1;
s205, judging whether the starting capacity of the internal unit is less than or equal to 90% of the capacity of the single external unit module, namely judging: whether the total capacity of the opened internal machine is less than or equal to 90% of the capacity of the single external machine module is established or not, if so, continuing to execute the step S206, and if not, continuing to execute the step S210;
s206, the external machine module G2 is opened preferentially;
s207, comparing the accumulated running time length S1 of the outdoor unit module corresponding to the grade parameter G1 with the accumulated running time length S3 of the outdoor unit module corresponding to the grade parameter G3, judging whether S1 is less than S3, if yes, continuing to execute the step S208, and if not, continuing to execute the step S209;
s208, the opening sequence of the outer machine module is as follows: g1 → G3;
s209, the opening sequence of the outer machine modules is as follows: g3 → G1;
s210, the opening sequence of the outer machine modules is as follows: g1 → G2 → G3;
and S211, controlling and opening the external machine modules according to the original opening sequence of the external machine modules.
In the steps of the control method, if the total capacity is larger than 105%, the step of starting the external machine module is started according to the original module control mode without triggering a grading rotation strategy because the total capacity is required to be started to be larger. After the internal unit is started, if the total capacity of the started internal units is lower than 105% of the capacity of the single external unit module, only the single external unit is started, a hierarchical starting alternate strategy is further triggered, and then the starting sequence of the external unit modules is controlled according to the specific situation of the capacity of the started internal units, as described below.
1) When the capacity of the internal unit is lower than 70% of the capacity of the single external unit module, the external unit modules are opened according to the sequence of G3 → G2 → G1.
2) When the capacity of the inner unit is higher than 70% of the capacity of the single outer unit module and lower than 90% of the capacity of the single outer unit module, the outer unit module G2 is preferentially opened. If the running time of the outdoor unit module G2 is required to be longer, the other outdoor unit modules G1 or G3 need to be turned on alternately, and at this time, the accumulated long-short module is preferentially run according to the accumulated running time of the outdoor unit module G1 or G3. The operation time of each outer machine module is balanced as much as possible, the phenomenon that the service life of a single outer machine module is opened for a long time, the service life is shortened, the integral service life of a system is influenced, and the adverse influence of maintenance times is increased is avoided.
3) When the capacity of the inner unit is higher than 90% of the capacity of the single outer unit module, the outer unit modules are turned on in the sequence of G1 → G2 → G3.
When the number of the external machine modules is four, if the number is more than 105%, the requirement for opening the total capacity is large, a grading rotation strategy is not triggered, and the external machine modules are opened according to the original module control mode. After the internal unit is started, if the total capacity of the started internal units is lower than 105% of the capacity of the single external unit module, only the single external unit is started, a hierarchical starting alternate strategy is further triggered, and then the starting sequence of the external unit modules is controlled according to the specific situation of the starting capacity, as described below.
1) When the capacity of the indoor unit is less than 70% of the capacity of the single outdoor unit module, the outdoor unit modules are opened in the sequence of G4 → G3 → G2 → G1.
2) When the capacity of the internal unit is higher than 70% of the capacity of the single external unit module and lower than 90% of the capacity of the single external unit module, the external unit modules G2 or G3 are preferentially started, specifically, the external unit modules G2 and G3 are alternately started, and then the external unit modules G1 and G4 are alternately started. And comparing No. 1 and No. 4 accumulated time to determine the rotation sequence. The alternate opening sequence of the outdoor unit modules G2 and G3 can be controlled according to the comparison of the accumulated running time of the two outdoor unit modules G2 and G3, and the outdoor unit module with shorter accumulated running time is opened preferentially; the alternating opening sequence of the outdoor unit modules G1 and G4 can be controlled according to the comparison of the accumulated running time of the two outdoor unit modules G1 and G4, and the outdoor unit module with shorter accumulated running time is opened preferentially.
3) When the capacity of the inner unit is higher than 90% of the capacity of the single outer unit module, the outer unit modules are opened in the order of G1 → G2 → G3 → G4.
When the number of the outdoor unit modules is more than four, the opening sequence of each outdoor unit module is controlled by the method, which is not described herein again.
In summary, the embodiment of the present invention provides the control method for controlling the opening sequence of the external unit module when a single external unit needs to be started in a multi-split air conditioner, which includes measuring and calculating the distance from a barrier to each air inlet and outlet surface according to the specific installation environment of the external unit module, calculating the air convection effect under the corresponding environment, and marking the external unit module in stages to realize the stage of the heat exchange capacity of the external unit module; the alternate opening sequence of the outer machine modules is further controlled according to the situation of the starting capacity requirement of the inner machine (namely the actual load requirement of the air conditioner system), the balance of the heat exchange and the operation life of the outer machine is realized, the system life is prolonged, and the energy consumption is reduced. And a statistical function of the accumulated running time of the external machine module is adopted, and forced balanced compensation operation is carried out when the running time of the external machine module is obviously different. Namely: the embodiment of the invention comprehensively considers the difference of heat exchange effect and the service life, reduces the switching times and reduces the energy consumption.
A second object of the present invention is to provide an operation control device for an outdoor unit of a multi-split air conditioner, which is applied to an air conditioning system, and includes:
an obtaining module 100, configured to obtain an environmental parameter of each external unit module and a total opening capacity of the internal unit in an open state;
the calculation module 200 is used for calculating the grade parameters of the outdoor unit modules according to the environment parameters;
and the control module 300 is configured to control an opening sequence of each external unit module according to the total opening capacity, the capacity of the single external unit module, and the parameters of each grade.
An embodiment of the present invention further provides an air conditioner, including: the control device comprises a computer readable storage medium storing a computer program, a processor and the control device, wherein the computer program realizes the control method when being read and executed by the processor.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is read and executed by a processor, the control method is implemented, and the same technical effect can be achieved, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Finally, it is also to be noted that the term "comprises," "comprising," or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (13)

1. The method for controlling the operation of the outdoor unit of the multi-split air conditioner is applied to an air conditioning system and is characterized in that the air conditioning system comprises an indoor unit and a plurality of outdoor unit modules, and the control method comprises the following steps:
acquiring environmental parameters of each external unit module, and calculating to obtain a grading coefficient of each external unit module according to the environmental parameters; sorting the grading coefficients in sequence according to the numerical values, and grading according to a sorting result to obtain sequentially sorted grade parameters;
and acquiring the total opening capacity of the indoor unit in the opening state, and controlling the opening sequence of each outdoor unit module according to the total opening capacity, the capacity of the single outdoor unit module and each grade parameter.
2. The method as claimed in claim 1, wherein the outdoor unit module includes a condenser, the condenser including an inlet surface and an outlet surface;
the environmental parameters include: the air inlet surface heat exchange weight coefficient, the air outlet surface heat exchange weight coefficient, the air inlet surface equivalent distance and the air outlet surface equivalent distance; the equivalent distance of the air inlet surface refers to the equivalent distance between the air inlet surface and the barrier, and the equivalent distance of the air outlet surface refers to the equivalent distance between the air outlet surface and the barrier;
the environment parameters of the outdoor unit modules are obtained, and the grading coefficient of each outdoor unit module is obtained through calculation according to the environment parameters; the grading coefficients are sequentially sorted according to the numerical value, and grading is carried out according to the sorting result to obtain sequentially sorted grade parameters, and the method comprises the following steps:
calculating an air inlet surface influence coefficient according to the air inlet surface heat exchange weight coefficient and the air inlet surface equivalent distance, wherein the air inlet surface influence coefficient is positively correlated to the air inlet surface heat exchange weight coefficient and the air inlet surface equivalent distance;
calculating to obtain an air outlet surface influence coefficient according to the air outlet surface heat exchange weight coefficient and the air outlet surface equivalent distance, wherein the air outlet surface influence coefficient is positively correlated to the air outlet surface heat exchange weight coefficient and the air outlet surface equivalent distance;
and calculating to obtain the grading coefficient of the outer machine module according to the air inlet surface influence coefficient and the air outlet surface influence coefficient, sequencing the grading coefficients in sequence according to the numerical values, and grading according to the sequencing result to obtain the sequentially sequenced grade parameters.
3. The method for controlling an operation of an external unit of a multi-split air conditioner according to claim 2,
the calculation method of the equivalent distance of the air inlet surface comprises the following steps: calculating to obtain an air inlet surface proportionality coefficient according to the total area of the air inlet surface and the projection area of the barrier projected to the air inlet surface, and calculating to obtain an air inlet surface equivalent distance according to the air inlet surface proportionality coefficient, a preset distance of the air inlet surface and a linear distance between the barrier and the air inlet surface;
the method for calculating the equivalent distance of the air outlet surface comprises the following steps: calculating to obtain an air outlet face proportion coefficient according to the total area of the air outlet face and the projection area of the barrier projected to the air outlet face, and calculating to obtain an air outlet face equivalent distance according to the air outlet face proportion coefficient, a preset distance of the air outlet face and a linear distance between the barrier and the air outlet face.
4. The method for controlling an outdoor unit of a multi-split air conditioner according to claim 3,
the calculation formula of the equivalent distance of the air inlet surface is as follows: l isj＝γj*Ljz+(1-γj)*Lj0(ii) a Wherein L isjIs the equivalent distance of the air inlet surface, LjzIs the linear distance between the barrier and the air inlet surface, Lj0For presetting distance, L, of air intake surfacejz＜Lj0，γjIs the air intake surface proportionality coefficient;
the calculation formula of the equivalent distance of the air outlet surface is as follows: l isc＝γc*Lcz+(1-γc)*Lc0(ii) a Wherein L iscIs an equivalent distance of the air outlet surface, LczIs the linear distance between the barrier and the air outlet surface, Lc0For the air-out surface with a predetermined distance, Lcz＜Lc0，γcIs the air outlet face proportionality coefficient.
5. The method for controlling an operation of an external unit of a multi-split air conditioner according to claim 2,
the calculation method of the heat exchange weight coefficient of the air inlet surface comprises the following steps: calculating to obtain an air inlet face heat exchange weight coefficient according to the ratio of the effective windward heat exchange area of the air inlet face to the effective windward heat exchange area of the total air inlet face, wherein the effective windward heat exchange area of the air inlet face is the visible area of a condenser of the air inlet face;
the method for calculating the heat exchange weight coefficient of the air outlet surface comprises the following steps: and calculating to obtain a heat exchange weight coefficient of the air outlet face according to the ratio of the effective windward heat exchange area of the air outlet face to the total air outlet area, wherein the effective windward heat exchange area of the air outlet face is the visible area of the condenser of the air outlet face.
6. The method for controlling an outdoor unit of a multi-split air conditioner according to claim 5,
the calculation formula of the heat exchange weight coefficient of the air inlet surface is as follows: alpha is alphaj＝αj0*Ajy/AjzWherein alpha isjTo enter intoWind surface heat transfer weight coefficient, alphaj0Is a heat exchange weight scale factor of the total air inlet surface, AjyIs the effective windward heat exchange area of the air inlet surface, AjzThe effective windward heat exchange area of the total air inlet surface;
the calculation formula of the air outlet surface heat exchange weight coefficient is as follows: alpha is alphac＝αc0*Acy/AczWherein alpha iscIs the heat exchange weight coefficient of the air outlet surface, alphac0Is a heat exchange weight scale factor of the total air outlet surface, AcyEffective windward heat exchange area of air outlet face, AczThe total air outlet area is obtained;
wherein alpha isj0+αc0＝1。
7. The method for controlling an operation of an external unit of a multi-split air conditioner according to claim 2,
the calculation formula of the air inlet surface influence coefficient is as follows: etaj＝αj*Lj；
The calculation formula of the air outlet surface influence coefficient is as follows: etac＝αc*Lc；
The calculation formula of the grading coefficient of the outer machine module is as follows: w ═ ηj+ηc；
Sorting according to the grading coefficients from high to low, and correspondingly obtaining the grading parameters which are sequentially arranged from small to large;
wherein eta isjIs the influence coefficient of the air intake surface, etacIs the influence coefficient of the air outlet surface, w is the grading coefficient of the outer machine module, alphajIs the heat exchange weight coefficient of the air inlet surface, alphacIs the heat exchange weight coefficient of the air outlet surface, LjIs the equivalent distance of the air inlet surface, LcIs the equivalent distance of the air outlet surface.
8. The method for controlling the operation of the outdoor unit of the multi-split air conditioner according to any one of claims 1 to 7, wherein the obtaining of the total capacity of the indoor unit in the on state and the controlling of the on sequence of the outdoor unit modules according to the total capacity of the indoor unit, the capacity of the outdoor unit module and the respective class parameters comprise:
if the total opening capacity is smaller than a first preset capacity, controlling the opening sequence of the outer machine modules to be as follows: sequentially controlling to start the corresponding external machine modules according to the sequence of the grade parameters from high to low;
if the total opening capacity is larger than the second preset capacity and smaller than the third preset capacity, controlling the opening sequence of the outer machine modules to be as follows: sequentially controlling to open each corresponding external machine module according to the sequence of the grade parameters from low to high;
the first preset capacity is smaller than the second preset capacity and smaller than the single outdoor unit module capacity and smaller than the third preset capacity.
9. The method for controlling the operation of the outdoor unit of the multi-split air conditioner according to any one of claims 1 to 7, wherein the obtaining of the total capacity of the indoor unit in the on state and the controlling of the on sequence of the outdoor unit modules according to the total capacity of the indoor unit, the capacity of the outdoor unit module and the respective class parameters comprise:
the number of the external machine modules is at least three, if the total opening capacity is larger than a first preset capacity and smaller than a second preset capacity, the opening sequence of each external machine module is controlled as follows: firstly, controlling to start an external machine module corresponding to the intermediate grade parameter, and then controlling to start an external machine module corresponding to the high grade parameter or the low grade parameter;
the first preset capacity is smaller than the second preset capacity and smaller than the capacity of the single outdoor unit module;
the low-level parameter is smaller than the intermediate-level parameter and smaller than the high-level parameter.
10. The method for controlling an operation of an external unit of a multi-split air conditioner according to claim 9,
the first control opens the outer machine module corresponding to the intermediate grade parameter, including: if at least two external machine modules corresponding to the intermediate level parameters are available, controlling to start the corresponding external machine modules according to the sequence of less accumulated running time to more accumulated running time;
then, the starting of the outdoor unit module corresponding to the high-level parameter or the low-level parameter includes: judging whether the accumulated running time of the outdoor unit module corresponding to the high-level parameters is less than the accumulated running time of the outdoor unit module corresponding to the low-level parameters; if so, controlling to start the external machine module corresponding to the high-grade parameter, and then controlling to start the external machine module corresponding to the low-grade parameter; if not, the outdoor unit module corresponding to the low-grade parameters is controlled to be started firstly, and then the outdoor unit module corresponding to the high-grade parameters is controlled to be started.
11. The utility model provides an outer quick-witted operation controlling means of multi-split air conditioner system, its characterized in that includes:
the acquisition module is used for acquiring the environmental parameters of each external unit module and the total opening capacity of the internal unit in the opening state;
the calculation module is used for calculating the grade parameters of the external machine modules according to the environment parameters;
and the control module is used for controlling the opening sequence of each outer machine module according to the total opening capacity, the capacity of a single outer machine module and each grade parameter.
12. An air conditioner, comprising: a computer-readable storage medium storing a computer program, a processor, and the multi-split external unit operation control device according to claim 11, wherein the computer program, when read and executed by the processor, implements the multi-split external unit operation control method according to any one of claims 1 to 10.
13. A computer-readable storage medium, characterized in that it stores a computer program which, when read and executed by a processor, implements the method according to any one of claims 1-10.
CN202110539780.7A 2021-05-18 2021-05-18 Multi-split air conditioner and method and device for controlling operation of outdoor unit of multi-split air conditioner Active CN113465096B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110539780.7A CN113465096B (en) 2021-05-18 2021-05-18 Multi-split air conditioner and method and device for controlling operation of outdoor unit of multi-split air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110539780.7A CN113465096B (en) 2021-05-18 2021-05-18 Multi-split air conditioner and method and device for controlling operation of outdoor unit of multi-split air conditioner

Publications (2)

Publication Number Publication Date
CN113465096A true CN113465096A (en) 2021-10-01
CN113465096B CN113465096B (en) 2022-09-09

Family

ID=77870851

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110539780.7A Active CN113465096B (en) 2021-05-18 2021-05-18 Multi-split air conditioner and method and device for controlling operation of outdoor unit of multi-split air conditioner

Country Status (1)

Country Link
CN (1) CN113465096B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113899051A (en) * 2021-10-28 2022-01-07 宁波奥克斯电气股份有限公司 Multi-split air conditioner control method and device and multi-split air conditioner
CN114413422A (en) * 2022-01-26 2022-04-29 广东美的制冷设备有限公司 Control method and control system of air conditioner, air conditioner and storage medium
CN114923266A (en) * 2022-07-20 2022-08-19 蘑菇物联技术（深圳）有限公司 Method, apparatus and medium for controlling chiller of central air conditioning system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104422072A (en) * 2013-09-05 2015-03-18 珠海格力电器股份有限公司 Control method for multi-split air conditioner and control system of multi-split air conditioner
CN107062537A (en) * 2017-03-29 2017-08-18 青岛海尔空调电子有限公司 The detection method and device of condenser for outdoor unit of air conditioner cleanliness factor
CN108917102A (en) * 2017-03-29 2018-11-30 青岛海尔空调电子有限公司 The detection method and device of condenser for outdoor unit of air conditioner cleanliness
CN112254295A (en) * 2020-09-25 2021-01-22 青岛海尔空调器有限总公司 Control method of air conditioner and air conditioner
CN112539520A (en) * 2020-12-17 2021-03-23 珠海格力电器股份有限公司 Defrosting control method and device and multi-split air conditioner

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104422072A (en) * 2013-09-05 2015-03-18 珠海格力电器股份有限公司 Control method for multi-split air conditioner and control system of multi-split air conditioner
CN107062537A (en) * 2017-03-29 2017-08-18 青岛海尔空调电子有限公司 The detection method and device of condenser for outdoor unit of air conditioner cleanliness factor
CN108917102A (en) * 2017-03-29 2018-11-30 青岛海尔空调电子有限公司 The detection method and device of condenser for outdoor unit of air conditioner cleanliness
CN112254295A (en) * 2020-09-25 2021-01-22 青岛海尔空调器有限总公司 Control method of air conditioner and air conditioner
CN112539520A (en) * 2020-12-17 2021-03-23 珠海格力电器股份有限公司 Defrosting control method and device and multi-split air conditioner

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113899051A (en) * 2021-10-28 2022-01-07 宁波奥克斯电气股份有限公司 Multi-split air conditioner control method and device and multi-split air conditioner
CN113899051B (en) * 2021-10-28 2023-12-01 宁波奥克斯电气股份有限公司 Multi-split control method, control device and multi-split
CN114413422A (en) * 2022-01-26 2022-04-29 广东美的制冷设备有限公司 Control method and control system of air conditioner, air conditioner and storage medium
CN114923266A (en) * 2022-07-20 2022-08-19 蘑菇物联技术（深圳）有限公司 Method, apparatus and medium for controlling chiller of central air conditioning system

Also Published As

Publication number Publication date
CN113465096B (en) 2022-09-09

Similar Documents

Publication Publication Date Title
CN113465096B (en) Multi-split air conditioner and method and device for controlling operation of outdoor unit of multi-split air conditioner
Kim et al. Model-based multi-objective optimal control of a VRF (variable refrigerant flow) combined system with DOAS (dedicated outdoor air system) using genetic algorithm under heating conditions
CN104121666B (en) For central air-conditioning wind system by time frequency conversion air feed system and control method
Henze et al. Impact of adaptive comfort criteria and heat waves on optimal building thermal mass control
JPWO2016009506A1 (en) Air conditioning control device, air conditioning control method, and program
JP5404556B2 (en) Air conditioner control device and refrigeration device control device
CN108241908A (en) A kind of new method of multi-online air-conditioning system outdoor unit type selecting
CN105674487A (en) Dynamic hydraulic balance adjusting method for central air conditioning system
JPWO2019008698A1 (en) Operation control device, air conditioning system, operation control method, and operation control program
CN112432227A (en) Secondary network heat supply regulation and control method, device, equipment and readable storage medium
CN113806938A (en) Refrigeration machine room energy efficiency calculation method and device and electronic equipment
CN110873446B (en) Method and device for controlling air conditioner, storage medium and processor
Lee et al. Supply air temperature impact in underfloor air distribution systems under Korean climatic conditions: Energy, humidity and comfort
Kim et al. Application of artificial neural network model for optimized control of condenser water temperature set-point in a chilled water system
JP4342329B2 (en) CO2 emission reduction support system and method
JP2022157500A (en) Air cleaning capacity evaluation system
JP2006162151A (en) Air-conditioning facility
Mottillo Sensitivity analysis of energy simulation by building type/Discussion
WO2023218634A1 (en) Air conditioning control device, air conditioning control method, and air conditioning control program
Liu et al. Reducing building energy costs using optimized operation strategies for constant volume air handling systems
WO2023188096A1 (en) Air conditioning control device and air conditioning control method
US5899080A (en) Air conditioning method and system
CN113915736B (en) Fresh air load prediction method, control device and system
JP7501664B2 (en) Control System
CN109241025A (en) A kind of HTM efficiency data base construction method, apparatus and system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20221021

Address after: 315191 No. 1166 Mingguang North Road, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District

Patentee after: NINGBO AUX ELECTRIC Co.,Ltd.

Patentee after: AUX AIR CONDITIONING LIMITED BY SHARE Ltd.

Address before: 315191 No. 1166 Mingguang North Road, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District

Patentee before: NINGBO AUX ELECTRIC Co.,Ltd.

Patentee before: Ningbo Oxfam intelligent commercial air conditioning manufacturing Co.,Ltd.