CN113137699A - Air conditioner and control method thereof - Google Patents
Air conditioner and control method thereof Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000004378 air conditioning Methods 0.000 claims abstract description 31
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 230000001276 controlling effect Effects 0.000 claims description 23
- 238000013507 mapping Methods 0.000 claims description 14
- 230000000875 corresponding effect Effects 0.000 claims description 12
- 238000004590 computer program Methods 0.000 claims description 4
- 230000002596 correlated effect Effects 0.000 claims description 4
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000033228 biological regulation Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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
- F24F2120/00—Control inputs relating to users or occupants
- F24F2120/10—Occupancy
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Abstract
The invention belongs to the technical field of air conditioners and aims to solve the problem that the existing air conditioner can not be matched with the current working condition when running according to set parameters. To this end, the present invention provides an air conditioner and a control method thereof, the air conditioner including an air conditioning system and a person detection device, the control method including: acquiring the volume of a target space, personnel information in the target space and the type of the target space; determining a first load according to the volume of the target space; determining a second load according to the personnel information and the type of the target space; and controlling the operation parameters of the air conditioning system according to the first load and the second load. By the control method, the air conditioner determines the load according to the volume of the target space, the personnel information in the target space and the type of the target space, the operation of the air conditioning system is controlled according to the load, the air conditioner and the working condition of the target space can be matched for operation, the temperature regulation requirement of the target space can be met, and energy waste can be avoided.
Description
Technical Field
The invention belongs to the technical field of air conditioners, and particularly provides an air conditioner and a control method thereof.
Background
With the continuous improvement of the living standard of people, the air conditioner becomes a common electric appliance in the life of people. Air conditioners are commonly used in homes, office buildings, business buildings and other places.
The existing air conditioner generally controls the operation of the air conditioner according to the set parameters of the user. For a common household air conditioner, the air conditioner operates according to the temperature and the wind speed set by a user, which may cause a situation inconsistent with the current working condition. For a commercial central air conditioner, the commercial central air conditioner usually works in a unified control mode, the number of people in application places in different time periods is possibly different, the temperature of the application places is also different, the air conditioner runs according to set parameters, and the situation of energy waste caused by mismatching with the current working condition can exist.
Therefore, there is a need in the art for a new solution to the above problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problem that the existing air conditioner may not be matched with the current working condition when operating according to the set parameters, the present invention provides a control method of an air conditioner, wherein the air conditioner includes an air conditioning system and a person detection device, and the control method includes: acquiring the volume of a target space, personnel information in the target space and the type of the target space; determining a first load according to the volume of the target space; determining a second load according to the personnel information and the type of the target space; and controlling the operation parameters of the air conditioning system according to the first load and the second load.
In a preferred embodiment of the above control method, the person information includes a number of persons, and the step of determining the second load based on the person information and the type of the target space includes: determining a first coefficient according to the type of the target space; calculating the second load according to equation (1),
Q2＝Φ*n*q2 (1)；
wherein Q is2For the second load, phi is the first coefficient, n is the number of people, q is2As sensible heat, q2The value range of (A) is 80-90W.
In a preferred technical solution of the above control method, the staff information includes the number of people and the stay time of the current staff in the target space, and the step of determining the second load according to the staff information and the type of the target space includes: determining a first coefficient according to the type of the target space; determining a second coefficient according to the stay time; calculating the second load according to equation (2),
Q2＝Φ*n*q2*X (2)；
q2 is the second load, phi is the first coefficient, n is the number of people, Q2 is sensible heat, Q2 is in a value range of 80-90W, X is the second coefficient, and the second coefficient is positively correlated with the stay time.
In a preferred embodiment of the above control method, the step of "determining the second coefficient according to the stay time period" includes: searching a second coefficient corresponding to the stay time length from a mapping relation of the second coefficient and the stay time length according to the stay time length; wherein the mapping relationship between the second coefficient and the dwell time comprises: when T is more than 0 and less than 2h, the second coefficient is 0.81; when T is more than or equal to 2 and less than 4h, the second coefficient is 0.91; when T is more than or equal to 4 and less than 6h, the second coefficient is 0.95; when T is more than or equal to 6h, the second coefficient is 0.99; wherein T is the dwell time.
In a preferred embodiment of the above control method, the step of "determining the first coefficient according to the type of the target space" includes: searching a first coefficient corresponding to the type from a mapping relation of the first coefficient and the type according to the type of the target space; the first coefficient-type mapping relationship includes: when the type of the target space is family, the first coefficient is 1; when the type of the target space is office, the first coefficient is 0.96; when the type of the target space is exhibition hall/quotient overtime, the first coefficient is 0.89; when the type of the target space is restaurant, the first coefficient is 0.93; when the type of the target space is a gym, the first coefficient is 0.92.
In a preferred embodiment of the above control method, the step of "acquiring the information of the person in the target space" includes: starting to detect the personnel in the target space from the start-up operation of the air conditioner and counting the stay time of the personnel in the target space; or detecting the personnel in the target space in real time and counting the stay time of the personnel in the target space.
In a preferred technical solution of the above control method, the air conditioner is a fresh air conditioner, and the step of controlling the operation parameters of the air conditioning system according to the first load and the second load includes: calculating the first new air quantity according to the formula (3),
Qx1＝V*nx (3)；
calculating a second fresh air volume according to the formula (4),
Qx2＝n*q1 (4)；
taking the maximum value of the first fresh air volume and the second fresh air volume as a target fresh air volume, and controlling a fresh air system to operate according to the target fresh air volume; determining a third load according to the target fresh air volume; controlling an operating parameter of the air conditioning system according to the first load, the second load, and the third load; wherein Q isx1For the first fresh air volume, V is the volume of the target space, nxFor number of air changes per hour, Qx2The second fresh air volume, n the number of people, q1The fresh air demand for a single person.
In a preferred embodiment of the control method, the step of "determining the third load based on the target fresh air volume" includes: acquiring outdoor temperature; calculating the third load according to equation (5),
Q3＝Qx*Cm*|Ts-To|/ρ (5)；
wherein Q is3For the third load, QxAnd the target fresh air volume is set, Cm is the specific heat capacity of fresh air, Ts is the indoor comfortable temperature, To is the outdoor temperature, and rho is the density of the fresh air.
In the preferred technical scheme of the control method, the step of controlling the fresh air system to operate according to the target fresh air volume comprises the following steps: acquiring an absolute value of a difference value between the outdoor temperature and the indoor comfortable temperature; and when the absolute value is larger than a preset difference value, controlling the fresh air system to delay the start for a preset time.
In the technical scheme of the invention, the air conditioner comprises an air conditioning system and a personnel detection device, and the control method comprises the following steps: acquiring the volume of a target space, personnel information in the target space and the type of the target space; determining a first load according to the volume of the target space; determining a second load according to the personnel information and the type of the target space; and controlling the operation parameters of the air conditioning system according to the first load and the second load.
By the control method, the air conditioner determines the load according to the volume of the target space, the personnel information in the target space and the type of the target space, the operation of the air conditioning system is controlled according to the load, the air conditioner and the working condition of the target space can be matched for operation, the temperature regulation requirement of the target space can be met, and energy waste can be avoided.
Preferably, the person information includes the number of persons and the current staying time of the person in the target space, and the step of determining the second load according to the person information and the type of the target space includes: determining a first coefficient according to the type of the target space; determining a second coefficient according to the stay time; the second load is calculated according to equation (2),
Q2＝Φ*n*q2*X (2)；
wherein Q is2Is the second load, phi is the first coefficient, n is the number of people, q2As sensible heat, q2The value range of (1) is 80-90W, X is a second coefficient, and the second coefficient is positively correlated with the retention time. Through the arrangement, more accurate load can be obtained according to the number of people in the target space and the stay time of the people in the target space, so that the operation of the air conditioning system is controlled more accurately.
Preferably, the air conditioner is a fresh air conditioner, and the step of controlling the operation parameters of the air conditioning system according to the first load and the second load comprises the following steps: calculating the first new air quantity according to the formula (3),
Qx1＝V*nx (3)；
calculating a second fresh air volume according to the formula (4),
Qx2＝n*q1 (4)；
taking the maximum value of the first fresh air volume and the second fresh air volume as a target fresh air volume, and controlling a fresh air system to operate according to the target fresh air volume; according to the targetDetermining a third load by the fresh air volume; controlling an operation parameter of the air conditioning system according to the first load, the second load and the third load; wherein Q isx1Is the first fresh air volume, V is the volume of the target space, nxFor number of air changes per hour, Qx2The second fresh air volume, n the number of people, q1The fresh air demand for a single person. Through the arrangement, the fresh air system can be controlled to change fresh air for the target space according to the volume of the target space and the number of people, and more accurate load can be obtained under the condition of changing fresh air for the target space, and the operation of the air conditioning system can be controlled accordingly.
In another aspect, the present invention also provides an air conditioner, including: a memory; a processor; and a computer program stored in the memory and configured to be executed by the processor to implement the control method of the air conditioner in the above-described technical solution.
It should be noted that the air conditioner has all the technical effects of the above control method, and details are not described herein.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
FIG. 1 is a diagram of main steps of a control method of an air conditioner according to the present invention;
fig. 2 is a step diagram of a control method of an air conditioner according to a first embodiment of the present invention;
fig. 3 is a step diagram of a control method of an air conditioner according to a second embodiment of the present invention.
Detailed Description
First, it should be understood by those skilled in the art that the embodiments described below are merely for explaining technical principles of the present invention, and are not intended to limit the scope of the present invention. For example, the control method of the air conditioner of the present invention can be applied to a one-by-one air conditioner, a one-by-many air conditioner, a wall-mounted air conditioner, a cabinet air conditioner, a fresh air conditioner, or other suitable air conditioners. Obviously, the technical solution after adjustment still falls into the protection scope of the present invention.
It should be noted that the terms "first", "second" and "third" in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, a control method of an air conditioner according to the present invention will be described. Fig. 1 is a main step diagram of a control method of an air conditioner according to the present invention.
Based on the problem that the prior air conditioner is not matched with the current working condition possibly when the prior air conditioner operates according to the set parameters, the invention provides a control method of the air conditioner, wherein the air conditioner comprises an air conditioning system and a personnel detection device. The air conditioning system comprises a circulating loop formed by a compressor, an outdoor heat exchanger, a throttling element and an indoor heat exchanger which are connected in series, an outdoor fan corresponding to the outdoor heat exchanger, an indoor fan corresponding to the indoor heat exchanger and the like. The personnel detection device can be an infrared sensor, a face recognition device or other devices capable of recognizing personnel and the like arranged on an indoor unit of the air conditioner, and the personnel detection device is connected with a controller of the air conditioner.
As shown in fig. 1, the control method of the air conditioner of the present invention mainly comprises the following steps:
and S100, acquiring the volume of the target space, the personnel information in the target space and the type of the target space.
For example, the air conditioner is provided with a space size detecting device such as an acoustic wave distance measuring device (e.g., a space size detecting device using millimeter wave technology), an infrared ray distance measuring device, or other suitable distance measuring device, etc. connected to the controller, the distance measuring device being capable of detecting the length, width, and height of the target space and transmitting the same to the controller, and the controller calculating the volume of the target space based on the length, width, and height of the target space. Of course, the volume of the target space may be directly stored to the controller by the installer at the time of installation of the air conditioner. The personnel detection device detects personnel information in the target space and sends the personnel information to the controller. The type of the target space may be directly input by an installer at the time of installation of the air conditioner, or may be input by a user. The types of the target space include home, office, exhibition room, business super, restaurant, and gym, and the person information includes the number of people in the target space.
Step S200, determining a first load according to the volume of the target space.
For example, the first load is calculated according to the formula Q1 ═ Q × V, where Q1 is the first load, V is the volume of the target space, Q is the load per unit volume, and Q may be 150 to 180W/m2Any value of (1). A plurality of volume ranges and a plurality of first loads corresponding to the volume ranges one to one may also be stored in the memory of the controller. And searching the corresponding first load by judging the volume range of the target space.
And step S300, determining a second load according to the personnel information and the type of the target space.
Specifically, the method comprises the following steps:
determining a first coefficient according to the type of the target space;
according to formula Q2＝Φ*n*q2Calculating a second load, wherein Q2Is the second load, phi is the first coefficient, n is the number of people, q2As sensible heat, q2The value range of (a) is 80-90W, namely q2Any value of 80-90W can be adopted.
The memory of the controller stores a first coefficient-type mapping relationship. The first coefficient-type mapping includes: the first coefficient is 1 when the type of the target space is home, 0.96 when the type of the target space is office, 0.89 when the type of the target space is showroom/business timeout, 0.93 when the type of the target space is restaurant, and 0.92 when the type of the target space is gym. The controller may search for a first coefficient corresponding to the type of the target space from the first coefficient-type mapping relationship according to the type of the target space.
And S400, controlling the operation parameters of the air conditioning system according to the first load and the second load.
And calculating the sum of the first load and the second load, controlling the air conditioning system to work according to the requirement of the larger load when the sum of the first load and the second load is larger, such as increasing the frequency of the compressor and increasing the opening degree of the electronic expansion valve and the rotating speeds of the indoor fan and the outdoor fan, and controlling the air conditioning system to work according to the requirement of the smaller load when the sum of the first load and the second load is smaller, such as reducing the frequency of the smaller compressor and reducing the opening degree of the electronic expansion valve and the rotating speeds of the indoor fan and the outdoor fan. It should be noted that the first load and the second load may be multiplied by different coefficients, respectively, and then summed, and then the operating parameters of the air conditioning system may be controlled according to the obtained sum of the loads.
By the control method, the air conditioner determines the load according to the volume of the target space, the personnel information in the target space and the type of the target space, the operation of the air conditioning system is controlled according to the load, the air conditioner and the working condition of the target space can be matched for operation, the temperature regulation requirement of the target space can be met, and energy waste can be avoided. When the first load is calculated, different first coefficients are selected for different types of target spaces, the situation that the same first load is obtained under the condition that personnel information of different target spaces is the same and the difference between the first load and the actual load is larger can be avoided, the first load is closer to the actual load, therefore, the operating parameters of the air conditioning system can be effectively controlled to be matched with the load of the target spaces for the target spaces of different types, and the comfort level of a user and the energy conservation and consumption reduction are both considered.
A control method of an air conditioner according to a first embodiment of the present invention will be described with reference to fig. 2. Fig. 2 is a step diagram of a control method of an air conditioner according to a first embodiment of the present invention. The personnel information includes the number of people and the stay time of the current personnel in the target space.
As shown in fig. 2, in a first embodiment of the present invention, a control method of an air conditioner of the present invention includes:
and S100, acquiring the volume of the target space, the personnel information in the target space and the type of the target space.
Step S200, determining a first load according to the volume of the target space.
Step S310, determining a first coefficient according to the type of the target space.
And step S320, determining a second coefficient according to the stay time.
Wherein the second coefficient is positively correlated with the dwell time. Specifically, the memory of the controller stores a mapping relationship between the second coefficient and the dwell time. The mapping relation of the second coefficient to the stay time length comprises: the second coefficient is 0.81 when T is more than 0 and less than 2h, 0.91 when T is more than 2 and less than 4h, 0.95 when T is more than 4 and less than 6h, and 0.99 when T is more than or equal to 6h, wherein T is the retention time. And searching a corresponding second coefficient from the mapping relation of the second coefficient and the stay time according to the stay time.
Step S330, according to formula Q2＝Φ*n*q2X calculates the second load.
Wherein Q is2Is the second load, phi is the first coefficient, n is the number of people, q2As sensible heat, q2The value range of (A) is 80-90W, and X is a second coefficient.
And S400, controlling the operation parameters of the air conditioning system according to the first load and the second load.
Through the arrangement, the second load is calculated by distinguishing different stay time lengths of the personnel in the target space, the situation that the second load is calculated due to the fact that the personnel stay in the space for different heat dissipation amounts, and large errors are generated when the second load is calculated can be avoided, and therefore the control accuracy can be further improved.
It should be noted that, when the air conditioner is started to operate, the people in the target space may be detected in real time, and the stay time of the people in the target space may be counted. Preferably, the personnel detecting device is always in the state of detecting the personnel information in the target space, namely whether the air conditioner works or not, the personnel detecting device is always in the state of detecting the personnel information in the target space. Therefore, when the first load and the second load are calculated during starting, the stay time of the personnel in the target space can be counted more accurately, and the more accurate load is obtained. In addition, step S200 may also be performed in synchronization with steps S310, S320, and S330, and step S200 may also be performed after steps S310, S320, and S330.
A control method of an air conditioner according to a second embodiment of the present invention will be described with reference to fig. 3. Fig. 3 is a step diagram of a control method of an air conditioner according to a second embodiment of the present invention.
In a second embodiment, the air conditioner is a fresh air conditioner, which includes a fresh air system. Specifically, the fresh air system comprises a fresh air duct connecting the indoor environment and the outdoor environment, and an air door and a fresh air fan are arranged in the fresh air duct. Under the condition that need let in the new trend to indoor, controller control air door and new trend fan are opened, can carry the air in the outdoor environment to indoor.
As shown in fig. 3, unlike the first embodiment, step S400 includes:
step S410, according to formula Qx1＝V*nxAnd calculating the first new air volume.
Wherein Q isx1Is the first fresh air volume, V is the volume of the target space, nxIs the number of air changes per hour.
Step S420, according to formula Qx2＝n*q1And calculating the second fresh air volume.
Wherein Q isx2The second fresh air volume, n the number of people, q1The fresh air demand for a single person. q. q.s1Can be taken to be 30-40 m3Any one of/h.
And S430, taking the maximum value of the first fresh air volume and the second fresh air volume as a target fresh air volume, and controlling the fresh air system to operate according to the target fresh air volume.
And step S441, acquiring the outdoor temperature.
Step S442, according to the formula Q3＝QxAnd calculating the third load by Cm | Ts-To | and ρ.
Wherein Q is3Is the third load, QxThe target fresh air volume is Cm, the specific heat capacity of fresh air, Ts, the indoor comfortable temperature, To, and rho, the fresh air density.
And S450, controlling the operation parameters of the air conditioning system according to the first load, the second load and the third load.
Through the arrangement, the fresh air system can be controlled to change fresh air for the target space according to the volume of the target space and the number of people, and more accurate load can be obtained under the condition of changing fresh air for the target space, and the operation of the air conditioning system can be controlled accordingly. According to formula Q3＝QxThe third load is calculated by Cm | Ts-To | ρ, and the third load can be obtained more accurately. In another possible embodiment, a plurality of target fresh air volume ranges and a plurality of third loads corresponding to the target fresh air volume ranges may be stored in the memory of the controller, and the target fresh air volume range in which the target fresh air volume falls may be determined, so that the corresponding third load may be acquired.
It should be noted that steps S410, S420, S430, S441, and S442 may be executed in synchronization with step S200, in synchronization with steps S310, S320, and S330, before step S200, or before steps S310, S320, and S330. Step S441 may be executed in synchronization with step S100.
After the fresh air system is started and operates for a ventilation period, the fresh air volume of the fresh air system is according to a formula Qx＝Qx0+(n-nc) Q 1. Wherein QxFresh air quantity, Qx0The fresh air quantity when the fresh air system is started, n is the number of people in the current target space, and n is the total number of people in the current target spacecThe number of people in the target space when the air conditioner is started and operated. Period of ventilation is T1＝60/nxMinute, nxIs the number of air changes per hour.
Preferably, before the fresh air system is controlled to operate according to the target fresh air volume, the absolute value of the difference value between the outdoor temperature and the indoor comfortable temperature is obtained; and when the absolute value is greater than the preset difference value, controlling the fresh air system to delay the start of the fresh air system for a preset time.
For example, in the heating operation process, when the absolute value of the difference value between the outdoor temperature and the indoor comfortable temperature is greater than 20 ℃, the fresh air system is started after being delayed for 15 min. When the air conditioner runs in a refrigerating mode, when the absolute value of the difference value between the outdoor temperature and the indoor comfortable temperature is larger than 15 ℃, the fresh air system is started after 13min delay.
Through such setting, can further improve user's comfort level, cause the indoor temperature to rise great and cause the user discomfort to send into indoor back with outdoor lower air under the refrigeration mode through the new trend system and cause the indoor temperature to reduce great and cause the user discomfort under the mode of heating under avoiding the mode of operation outdoor higher air and sending into indoor through the new trend system.
In another possible implementation mode, the air conditioner is a multi-split air conditioner, and the number of the indoor units can be increased or decreased according to the load when the air conditioning system is controlled to operate according to the load.
In another aspect, the present invention also provides an air conditioner, including: the air conditioner control device comprises a memory, a processor and a computer program, wherein the computer program is stored in the memory and is configured to be executed by the processor to realize the control method of the air conditioner of any one embodiment. The memory and the processor are arranged on the controller.
It should be noted that the memory in the above embodiments includes, but is not limited to, a random access memory, a flash memory, a read only memory, a programmable read only memory, a volatile memory, a non-volatile memory, a serial memory, a parallel memory, or a register, and the like, and the processor includes, but is not limited to, a CPLD/FPGA, a DSP, an ARM processor, a MIPS processor, and the like.
As can be seen from the above description, in the technical scheme of the present invention, the air conditioner determines the load according to the acquired volume of the target space, the personnel information in the target space, and the type of the target space, and controls the operation of the air conditioning system according to the load, so that the air conditioner and the working condition of the target space can be operated in a matching manner, the temperature regulation requirement of the target space can be met, and the energy waste can be avoided.
Those skilled in the art will appreciate that although some embodiments described herein include some features included in other embodiments instead of others, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims of the present invention, any of the claimed embodiments may be used in any combination.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A control method of an air conditioner, the air conditioner comprising an air conditioning system and a person detection device, the control method comprising:
acquiring the volume of a target space, personnel information in the target space and the type of the target space;
determining a first load according to the volume of the target space;
determining a second load according to the personnel information and the type of the target space;
and controlling the operation parameters of the air conditioning system according to the first load and the second load.
2. The control method according to claim 1, wherein the person information includes a number of persons, and the step of determining the second load according to the person information and the type of the target space includes:
determining a first coefficient according to the type of the target space;
calculating the second load according to equation (1),
Q2＝Φ*n*q2 (1)；
wherein Q is2For the second load, phi is the first coefficient, n is the number of people, q is2As sensible heat, q2The value range of (A) is 80-90W.
3. The control method according to claim 1, wherein the person information includes a number of persons and a length of stay of the current person in the target space, and the step of determining the second load according to the person information and the type of the target space includes:
determining a first coefficient according to the type of the target space;
determining a second coefficient according to the stay time;
calculating the second load according to equation (2),
Q2＝Φ*n*q2*X (2)；
wherein Q is2For the second load, phi is the first coefficient, n is the number of people, q is2As sensible heat, q2The value range of (a) is 80-90W, X is the second coefficient, and the second coefficient is positively correlated with the stay time.
4. The control method according to claim 3, wherein the step of determining the second coefficient according to the stay time period includes:
searching a second coefficient corresponding to the stay time length from a mapping relation of the second coefficient and the stay time length according to the stay time length;
wherein the mapping relationship between the second coefficient and the dwell time comprises:
when T is more than 0 and less than 2h, the second coefficient is 0.81;
when T is more than or equal to 2 and less than 4h, the second coefficient is 0.91;
when T is more than or equal to 4 and less than 6h, the second coefficient is 0.95;
when T is more than or equal to 6h, the second coefficient is 0.99;
wherein T is the dwell time.
5. The control method according to any one of claims 2 to 4, wherein the step of "determining the first coefficient according to the type of the target space" includes:
searching a first coefficient corresponding to the type from a mapping relation of the first coefficient and the type according to the type of the target space;
the first coefficient-type mapping relationship includes:
when the type of the target space is family, the first coefficient is 1;
when the type of the target space is office, the first coefficient is 0.96;
when the type of the target space is exhibition hall/quotient overtime, the first coefficient is 0.89;
when the type of the target space is restaurant, the first coefficient is 0.93;
when the type of the target space is a gym, the first coefficient is 0.92.
6. The control method according to claim 3 or 4, wherein the step of "acquiring the person information in the target space" includes:
starting to detect the personnel in the target space from the start-up operation of the air conditioner and counting the stay time of the personnel in the target space; or
And detecting the personnel in the target space in real time and counting the stay time of the personnel in the target space.
7. The control method according to any one of claims 2 to 4, wherein the air conditioner is a fresh air conditioner, and the step of controlling the operation parameter of the air conditioning system according to the first load and the second load comprises:
calculating the first new air quantity according to the formula (3),
Qx1＝V*nx (3)；
calculating a second fresh air volume according to the formula (4),
Qx2＝n*q1 (4)；
taking the maximum value of the first fresh air volume and the second fresh air volume as a target fresh air volume, and controlling a fresh air system to operate according to the target fresh air volume;
determining a third load according to the target fresh air volume;
controlling an operating parameter of the air conditioning system according to the first load, the second load, and the third load;
wherein Q isx1For the first fresh air volume, V is the volume of the target space, nxFor number of air changes per hour, Qx2The second fresh air volume, n the number of people, q1The fresh air demand for a single person.
8. The control method according to claim 7, wherein the step of "determining the third load according to the target fresh air volume" includes:
acquiring outdoor temperature;
calculating the third load according to equation (5),
Q3＝Qx*Cm*|Ts-To|/ρ (5)；
wherein Q is3For the third load, QxAnd the target fresh air volume is set, Cm is the specific heat capacity of fresh air, Ts is the indoor comfortable temperature, To is the outdoor temperature, and rho is the density of the fresh air.
9. The control method according to claim 7, wherein the step of controlling the fresh air system to operate according to the target fresh air volume comprises:
acquiring an absolute value of a difference value between the outdoor temperature and the indoor comfortable temperature;
and when the absolute value is larger than a preset difference value, controlling the fresh air system to delay the start for a preset time.
10. An air conditioner, comprising:
a memory;
a processor; and
a computer program stored in the memory and configured to be executed by the processor to implement the control method of the air conditioner of any one of claims 1 to 9.
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