CN111486544A - Air conditioner and control method and device thereof - Google Patents

Air conditioner and control method and device thereof Download PDF

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CN111486544A
CN111486544A CN202010349599.5A CN202010349599A CN111486544A CN 111486544 A CN111486544 A CN 111486544A CN 202010349599 A CN202010349599 A CN 202010349599A CN 111486544 A CN111486544 A CN 111486544A
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flow rate
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air
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李德鹏
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Hisense Guangdong Air Conditioning Co Ltd
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Hisense Guangdong Air Conditioning Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • 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
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • 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
    • 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
    • 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
    • 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
    • F24F2110/20—Humidity
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • 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)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses an air conditioner and a control method and a control device thereof, wherein the control method of the air conditioner comprises the following steps: in an air conditioner action space, acquiring target clothing thermal resistance, target metabolic rate and target average radiation temperature; acquiring the temperature and humidity of air in a space; determining the air flow rate of a target point in the space according to the target human body thermal comfort evaluation index value, the target clothing thermal resistance, the target metabolic rate, the target average radiation temperature, and the air temperature and humidity in the space; and controlling the running state of the indoor fan motor according to the air flow velocity of the target point in the space. According to the air conditioner control method, the air flow rate in the space is calculated through the target human body thermal comfort evaluation index value and the influence factor thereof, the rotating speed of the indoor fan motor is adjusted based on the air flow rate, the room air is kept in a continuous comfortable state, the air conditioner can be kept in continuous comfortable and energy-saving operation, the heating and refrigerating requirements of a user are met, and the comfort of the user is improved.

Description

Air conditioner and control method and device thereof
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner and a control method and a control device thereof.
Background
In the related art, an indoor motor of an air conditioner is usually set to a plurality of gears according to experimental conditions, and in actual use, the rotating speed of the motor is automatically adjusted according to a set scene, or a user adjusts the rotating speed of the motor according to own needs. However, the above-mentioned control method for the motor rotation speed has obvious disadvantages: on one hand, the air supply requirements of users in real use cannot be well covered by a plurality of gear rotating speeds set in a laboratory; on the other hand, when the user adjusts the rotating speed, the main consideration is that the user considers uncomfortable, but the user does not know how to adjust the rotating speed to be suitable, the rotating speed is often adjusted to the lowest gear, the too low rotating speed is not beneficial to the heat exchange effect of the air conditioner, the problems of poor refrigeration effect, high energy consumption, high electricity charge and the like are caused, and the comfort of the user cannot be well improved.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide an air conditioner control method, which can control the operation state of an indoor fan motor according to a PMV (Predicted Mean volume) value, so as to maintain the room air in a continuous comfortable state, thereby maintaining the continuous comfortable and energy-saving operation of the air conditioner.
Another object of the present invention is to provide an air conditioner control device having the above air conditioner control method.
Another object of the present invention is to provide an air conditioner having the above air conditioner control method.
An air conditioner control method according to an embodiment of a first aspect of the present invention includes:
in an air conditioner action space, acquiring target clothing thermal resistance, target metabolic rate and target average radiation temperature;
acquiring the temperature and humidity of the air in the space;
determining the air flow rate of a target point in the space according to the target human body thermal comfort evaluation index value, the target clothing thermal resistance, the target metabolic rate, the target average radiation temperature, and the air temperature and humidity in the space;
and controlling the running state of the indoor fan motor according to the air velocity of the target point in the space.
According to the air conditioner control method provided by the embodiment of the invention, in an air conditioner action space, the target clothing thermal resistance, the target metabolic rate and the target average radiation temperature are obtained, the air temperature and the humidity in the space are obtained, then, the air flow rate of a target point in the space is determined according to the target human body thermal comfort evaluation index value, the target clothing thermal resistance, the target metabolic rate, the target average radiation temperature and the air temperature and the humidity in the space, and the running state of an indoor fan motor is controlled according to the air flow rate of the target point in the space. Therefore, the air flow rate in the space is calculated through the target human body thermal comfort evaluation index value and the influence factors (such as clothing thermal resistance, metabolic rate, average radiation temperature, air temperature and humidity in the space) of the index value, and then the rotating speed of the indoor fan motor is adjusted based on the air flow rate, so that the room air is kept in a continuous comfortable state, the air conditioner can be kept in continuous comfortable and energy-saving operation, the heating and cooling requirements of a user are met, and meanwhile, the comfort level of the user can be improved.
According to some embodiments of the invention, the controlling the operation state of the indoor fan motor according to the air flow rate of the target point in the space comprises:
determining the target rotating speed of the indoor fan motor according to the air flow velocity of the target point in the space;
and correspondingly controlling the indoor fan motor according to the target rotating speed.
According to some embodiments of the invention, the determining the target rotation speed of the indoor fan motor according to the air flow velocity of the target point in the space comprises:
comparing an air flow rate at a target point in the space to a first target flow rate threshold and a second target flow rate threshold for the target point; wherein the first target flow rate threshold is less than the second target flow rate threshold;
if the air flow rate of a target point in the space is less than or equal to the first target flow rate threshold value, determining the lowest operation rotating speed of a fan motor as the target rotating speed;
if the air flow rate of the target point in the space is greater than or equal to the second target flow rate threshold value, determining the highest operation rotating speed of the fan motor as the target rotating speed;
and if the air flow velocity of the target point in the space is greater than the first target flow velocity threshold and less than the second target flow velocity threshold, performing interpolation calculation based on the air flow velocity of the target point in the space, the first target flow velocity threshold and the second target flow velocity threshold to obtain the target rotating speed.
According to some embodiments of the present invention, the interpolating based on the air flow velocity of the target point in the space, the first target flow velocity threshold value, and the second target flow velocity threshold value to obtain the target rotation speed includes:
determining a target flow speed reference value range in which the air flow speed of a target point in the space is located from a plurality of flow speed reference value ranges; wherein the flow rate reference value ranges are obtained by dividing a numerical interval consisting of the first target flow rate threshold value and the second target flow rate threshold value into a plurality of intervals through at least one flow rate intermediate value, and the flow rate intermediate value is greater than the first target flow rate threshold value and less than the second target flow rate threshold value;
determining the running rotating speed of a first fan motor corresponding to a first critical value in the target flow speed reference value range, and determining the running rotating speed of a second fan motor corresponding to a second critical value in the target flow speed reference value range;
and carrying out interpolation calculation according to the air flow velocity of the target point in the space, the first critical value, the second critical value, the running rotating speed of the first fan motor and the running rotating speed of the second fan motor to obtain the target rotating speed.
According to some embodiments of the invention, the controlling the indoor fan motor according to the target rotation speed comprises:
when the indoor fan motor is a stepless speed regulating motor, correspondingly controlling the indoor fan motor according to the target rotating speed;
and when the indoor fan motor is a stepped speed regulating motor, finding out the operating rotating speed closest to the target rotating speed from the operating rotating speeds of the first fan motor and the second fan motor, and correspondingly controlling the indoor fan motor according to the found operating rotating speed closest to the target rotating speed.
According to some embodiments of the invention, the obtaining the target garment thermal resistance, the target metabolic rate and the target average radiation temperature comprises:
acquiring the initial temperature in the air conditioner acting space;
and acquiring the target clothing thermal resistance, the target metabolic rate and the target average radiation temperature according to the initial temperature in the air conditioner action space.
According to some embodiments of the invention, the obtaining the air temperature and humidity within the space comprises:
acquiring the temperature in the air conditioner acting space;
and when the temperature in the air conditioner acting space reaches a target temperature or the difference between the temperature in the air conditioner acting space and the target temperature meets a target value, acquiring the temperature and the humidity of the air in the space.
According to some embodiments of the invention, the target human thermal comfort evaluation index value is 0.
The air conditioner control device according to the embodiment of the second aspect of the invention comprises a parameter acquisition module, a parameter acquisition module and a parameter acquisition module, wherein the parameter acquisition module is used for acquiring target clothing thermal resistance, target metabolic rate and target average radiation temperature in an air conditioner action space; the temperature and humidity acquisition module is used for acquiring the temperature and humidity of the air in the space; the air flow rate determining module is used for determining the air flow rate of a target point in the space according to a target human body thermal comfort evaluation index value, the target clothing thermal resistance, the target metabolic rate, the target average radiation temperature and the air temperature and humidity in the space; and the air flow rate determining module is used for controlling the running state of the indoor fan motor according to the air flow rate of the target point in the space.
An air conditioner according to an embodiment of a third aspect of the present invention includes: an indoor fan motor; the temperature sensor is used for collecting the air temperature in the air conditioner acting space; the humidity sensor is used for acquiring the humidity in the air conditioner acting space; at least one processor; a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the air conditioner control method according to the above first aspect of the present invention.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart of an air conditioner control method according to an embodiment of the present invention;
fig. 2 is a flowchart of an air conditioner control method according to another embodiment of the present invention;
fig. 3 is a flowchart of an air conditioner control method according to still another embodiment of the present invention;
fig. 4 is a flowchart of an air conditioner control method according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an air conditioner control device according to an embodiment of the present invention.
Reference numerals:
500: an air conditioner control device;
510: a parameter acquisition module; 520: a temperature and humidity acquisition module;
530: an air flow rate determination module; 540: an air flow rate determination module.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
An air conditioner control method according to an embodiment of the present invention is described below with reference to fig. 1 to 5.
It should be noted that the currently internationally recognized evaluation index PMV for human thermal comfort is the predicted average thermal sensation index, and the PMV evaluation index includes 4 environmental factors and 2 human factors. Wherein, the 4 environmental factors may include air temperature, humidity, air flow rate and average radiation temperature; the 2 personal factors may include metabolic rate and clothing thermal resistance. Wherein, the calculation formula of PMV is as follows:
Figure BDA0002471472100000041
in the formula:
Figure BDA0002471472100000051
Figure BDA0002471472100000052
Figure BDA0002471472100000053
PMV: an expected average heat sensation index;
m: metabolic rate in watts per square meter (W/m)2)；
W: heat consumed by external work (negligible for most activities), in watts per square meter (W/m)2)；
Pa: water vapor partial pressure in pascals (Pa);
ta: air temperature in degrees Celsius (. degree. C.);
fc1: the surface area of the body when the garment is worn and when the garment is exposedThe ratio of the human body surface area;
tc1: garment surface temperature in degrees Celsius (. degree. C.);
Figure BDA0002471472100000054
mean radiant temperature in degrees Celsius (. degree. C.);
hc: convective heat transfer system with unit of watt per square meter centigrade (W/(m)2·℃)；
Ic1: clothing thermal resistance in units of degrees Celsius per square meter per watt (m)2·℃/W)；
var: air flow rate in meters per second (m/s).
The PMV index is obtained from a static state. In applications where there is a small variation in one or more of the parameters, a good approximation can be obtained with a time-weighted average of the first 1h of the parameter.
It is recommended that the PMV index be used only when the PMV value is between-2 + 2.
Further, when the following 6 main parameters are in the following ranges, the PMV index may be recommended.
M＝46.25W/m2～232.60W/m2(0.8met～4met)
Ic1＝0m2·℃/W～0.31m2·℃/W(0clo～2clo)
As can be seen from the PMV calculation formula, the PMV can be simply expressed in the form: PMV ═ F (air temperature, humidity, air flow rate, mean radiant temperature, metabolic rate, clothing thermal resistance). For the air conditioner, the average room radiation temperature, the human body metabolic rate and the clothing thermal resistance can be set according to relevant standards, the main factors influencing the PMV are temperature, humidity and air flow rate, the temperature and the humidity of the room can be directly measured by a sensor, and the air flow rate is directly related to the rotating speed of a fan. If a relation table of the air flow rate of the room and the rotating speed of the fan is established, the PMV value of the room can be adjusted through the rotating speed of the fan, and therefore the comfort level of a user is improved. Based on the principle, the invention provides an air conditioner control method, a control device, an air conditioner and a storage medium, which can control the running state of an indoor fan motor according to a PMV value to keep the room air in a continuous comfortable state, thereby keeping the air conditioner in continuous comfortable energy-saving running.
It should be noted that the air conditioner control method according to the embodiment of the present invention may be applied to the air conditioner control device according to the embodiment of the present invention, and the control device may be configured on an air conditioner. As shown in fig. 1, the air conditioner control method may include:
step 101, obtaining target clothing thermal resistance, target metabolic rate and target average radiation temperature in an air conditioner acting space.
It will be appreciated that the three factors of garment thermal resistance, metabolic rate and average radiation temperature described above will have different numerical performance at different ambient temperatures. For example, the setting table of the clothing thermal resistance, the metabolic rate and the average radiation temperature at different environmental temperatures can be shown in the following table 1, wherein the corresponding relationship between the temperature in the table and the corresponding numerical values of the clothing thermal resistance, the metabolic rate and the average radiation temperature is an empirical value obtained through a large number of experimental tests.
TABLE 1 setting table of thermal resistance, metabolic rate and average radiation temperature of clothes under different environmental temperatures
Figure BDA0002471472100000061
As can be seen from Table 1 above, the three factors of clothing thermal resistance, metabolic rate and average radiation temperature have different numerical expressions under different ambient temperatures. It should be noted that, generally, the ambient temperatures in the room and the outside do not differ too much, so the three factors of the thermal resistance, the metabolic rate and the average radiation temperature of the garment affected by the ambient temperatures do not change much at the indoor and the outdoor temperatures, for example, when a user wears a certain piece of clothes, the thermal resistance of the garment does not differ much at the indoor and the outdoor ambient temperatures, and therefore, the three factors of the thermal resistance, the metabolic rate and the average radiation temperature of the garment have little influence on the PMV value of the evaluation index of the human thermal comfort level at different ambient temperatures. Based on this characteristic, in one embodiment of the present invention, when the operation state of the indoor fan motor is controlled based on the PMV value, the target clothing thermal resistance C, the target metabolic rate M, and the target average radiation temperature TF may be obtained at a certain fixed temperature. That is, the target clothing thermal resistance C, the target metabolic rate M, and the target average radiation temperature TF may be obtained by referring to table 1 based on a certain fixed temperature. As an example, the certain fixed temperature may be an average temperature value throughout the year.
In order to improve the calculation accuracy, in another embodiment of the present invention, an initial temperature in the air conditioner operation space may be obtained, and the target clothing thermal resistance, the target metabolic rate, and the target average radiation temperature may be obtained according to the initial temperature in the air conditioner operation space. For example, when the air conditioner receives a power-on signal, the temperature in the air conditioner working space can be collected by the indoor temperature sensor to obtain an initial temperature T0 in the air conditioner working space, and the initial temperature T0 is searched in the table 1 to obtain a target clothing thermal resistance C, a target metabolic rate M and a target average radiation temperature TF corresponding to the initial temperature T0. Therefore, the target clothing thermal resistance, the target metabolic rate and the target average radiation temperature are determined through the initial temperature in the air conditioner acting space, the clothing thermal resistance, the metabolic rate and the average radiation temperature which are more in line with the current environment can be obtained, calculation is carried out on the basis of the clothing thermal resistance, the metabolic rate and the average radiation temperature which are more in line with the current environment in the following process, the air flow rate can be obtained more accurately, and calculation accuracy is improved.
Step 102, acquiring the air temperature and humidity in the space.
In the embodiment of the present invention, when the air conditioner receives the power-on signal, the rotation speed of the indoor fan motor may be controlled to perform cooling or heating operation at the highest operation rotation speed or the set rotation speed, at this time, the temperature in the space where the air conditioner operates may be obtained in real time or periodically, and the temperature in the space reaches a target temperature (where the target temperature may be a certain set temperature), or a difference between the temperature in the space and the target temperature satisfies a target value, for example, the difference between the temperature in the space and the target temperature is equal to the target value, and at this time, the current air temperature and humidity in the space may be obtained. From this, the temperature reaches the settlement temperature in the space, or the difference between the temperature in the space and this target temperature satisfies the target value, can satisfy user's demand basically this moment, in order to keep lasting comfortable and energy-conserving operation, the temperature reaches the settlement temperature in the space, or when the difference between the temperature in the space and this target temperature satisfies the target value, gather again and record current air temperature T ring, environment humidity RH ring, and like this, can improve the calculation accuracy of air flow rate, thereby based on this high accuracy air flow rate, the rotational speed of adjustment fan motor that can be accurate, thereby can promote user's comfort level.
And 103, determining the air flow rate of a target point in the space according to the target human body thermal comfort evaluation index value, the target clothing thermal resistance, the target metabolic rate, the target average radiation temperature, and the air temperature and humidity in the space.
It will be appreciated from the PMV calculation formula that the PMV can be expressed simply as follows: the PMV is a function value composed of 6 parameters of air temperature, humidity, air flow rate, average radiation temperature, metabolic rate, and clothing thermal resistance, and based on the function, if the PMV is assumed to be a target value and the parameters of clothing thermal resistance, metabolic rate, average radiation temperature, air temperature, and humidity have corresponding values, a functional formula of the air flow rate can be derived based on the above-mentioned PMV, for example, the air flow rate V is F1 (T-ring, RH-ring, C, M, TF, PMV).
In this step, the air velocity at the target point in the space can be calculated based on the target human thermal comfort evaluation index value, the target clothing thermal resistance, the target metabolic rate, the target average radiation temperature, the air temperature and humidity in the space, and the function formula of the air velocity V. As an example, the above target human thermal comfort evaluation index PMV value may preferably be 0. It can be understood that when the temperature in the space reaches the set temperature or the difference between the temperature in the space and the target temperature meets the target value, the requirement of the user can be basically met, and in order to keep continuous comfortable and energy-saving operation, the rotating speed of the indoor fan motor can be controlled according to the PMV which is the highest in comfort level being 0, so that in the invention, the target human body thermal comfort level evaluation index value is 0.
It should be noted that in the embodiment of the present invention, the target point may be understood as a set point or a set area in a space, for example, a middle layer area of a three-dimensional space in a room, i.e., approximately 1.5 meters from the floor of the room. It is to be understood that the above description of the target point is only for the convenience of understanding of those skilled in the art and is not to be taken as a specific limitation of the present invention, and the position of the target point may be set based on the actual situation and is not specifically limited herein.
And 104, controlling the running state of the indoor fan motor according to the air flow rate of the target point in the space.
It should be noted that the air flow rate is directly related to the indoor fan motor speed. In the embodiment of the present invention, the target rotation speed of the indoor fan motor may be determined according to the air flow rate of the target point in the space, and the indoor fan motor may be correspondingly controlled according to the target rotation speed, that is, the air conditioner controller may control the calculated target rotation speed R as the target value of the indoor fan motor. For example, a table of the relationship between the air flow rate at the target point in the space and the indoor fan motor speed may be pre-established, for example, as shown in table 2 below. After obtaining the air flow rate of the target point in the space, the indoor fan motor may be searched in table 2 to obtain the indoor fan motor rotation speed corresponding to the air flow rate of the target point in the space, that is, the target rotation speed, and then the indoor fan motor may be correspondingly controlled based on the target rotation speed, so that the indoor fan motor rotation speed may be controlled according to the PMV ═ 0 with the highest comfort level, and the air conditioner may be kept in continuous comfortable energy-saving operation.
Table 2 relation table of air velocity of target point in space and indoor fan motor rotation speed
Figure BDA0002471472100000081
According to the air conditioner control method provided by the embodiment of the invention, in an air conditioner action space, the target clothing thermal resistance, the target metabolic rate and the target average radiation temperature are obtained, the air temperature and the humidity in the space are obtained, then, the air flow rate of a target point in the space is determined according to the target human body thermal comfort evaluation index value, the target clothing thermal resistance, the target metabolic rate, the target average radiation temperature and the air temperature and the humidity in the space, and the running state of an indoor fan motor is controlled according to the air flow rate of the target point in the space. Therefore, the air flow rate in the space is calculated through the target human body thermal comfort evaluation index value and the influence factors (such as clothing thermal resistance, metabolic rate, average radiation temperature, air temperature and humidity in the space) of the index value, and then the rotating speed of the indoor fan motor is adjusted based on the air flow rate, so that the room air is kept in a continuous comfortable state, the air conditioner can be kept in continuous comfortable and energy-saving operation, the heating and cooling requirements of a user are met, and meanwhile, the comfort level of the user can be improved.
It should be noted that the rotation speed of the indoor fan motor has the lowest operation rotation speed and the highest operation rotation speed, and in order to facilitate the control of the rotation speed of the fan motor, in the embodiment of the present invention, as shown in the above table 2, the rotation speed of the indoor fan motor is divided into a plurality of gears, where R is RminAt the lowest operating speed, RmaxThe maximum operating speed is set, and the rotating speed of each gear of the indoor fan motor corresponds to an air flow rate, so that based on the table 2 and the relation table shown in the table, the target rotating speed of the indoor fan motor at the moment can be determined through the air flow rate of the target point in the current space, and the indoor fan motor can be controlled to perform heating and cooling operation based on the target rotating speed. Specifically, in some embodiments of the present invention, as shown in fig. 2, the specific implementation process of determining the target rotation speed of the indoor fan motor according to the air flow rate of the target point in the space may include:
step 210, comparing the air flow velocity of the target point in the space with a first target flow velocity threshold and a second target flow velocity threshold aiming at the target point; wherein, in an embodiment of the present invention, the first target flow rate threshold is less than the second target flow rate threshold.
It is understood that, since there is a direct relationship between the indoor fan motor and the air flow rate of the target point in the space, the indoor fan motor has the lowest operating speed and the highest operating speed, and therefore, the air flow rate for the target point also has the minimum flow rate and the maximum flow rate, wherein the minimum flow rate is the first target flow rate threshold V1, and the maximum flow rate is the second target flow rate threshold V5.
In order to avoid that the rotating speed of the indoor fan motor exceeds the lowest or highest operating rotating speed, so that the air flow rate of the target point in the space is too high or too low, in the embodiment of the present invention, after the air flow rate of the target point in the current space is obtained, the air flow rate of the target point needs to be compared with the first target flow rate threshold and the second target flow rate threshold for the target point in size, so as to determine the target rotating speed of the indoor fan motor based on the comparison result.
And step 220, if the air flow rate of the target point in the space is less than or equal to the first target flow rate threshold value, determining the lowest operation rotating speed of the fan motor as the target rotating speed.
And step 230, if the air flow rate of the target point in the space is greater than or equal to the second target flow rate threshold value, determining the highest operation rotating speed of the fan motor as the target rotating speed.
In step 240, if the air flow rate of the target point in the space is greater than the first target flow rate threshold and less than the second target flow rate threshold, performing interpolation calculation based on the air flow rate of the target point in the space, the first target flow rate threshold and the second target flow rate threshold to obtain the target rotation speed.
That is, when the air flow velocity of the target point in the space is greater than the first target flow velocity threshold and less than the second target flow velocity threshold, interpolation calculation may be performed according to the air flow velocity of the target point in the space, the first target flow velocity threshold, and the second target flow velocity threshold, so as to obtain the target rotation velocity. As an example, assume that the indoor fan motor speed corresponding to the first target flow rate threshold V1 is RminThe indoor fan motor speed corresponding to the second target flow rate threshold V5 is RmaxThe target rotating speed of the indoor fan motor can be calculated by adopting the following interpolation calculation formula:
Figure BDA0002471472100000101
wherein R is a target rotating speed; rminThe indoor fan motor rotating speed corresponding to the first target flow speed threshold value; rmaxThe indoor fan motor rotating speed corresponding to the second target flow speed threshold value; v1 is a first target flow rate threshold; v5 is the second target flow rate threshold; v is the air velocity of the target point in the space.
In order to realize the adjustment of the rotating speeds of a plurality of gears of an indoor fan motor and enrich the diversified adjustment of the rotating speeds of the motor, a numerical interval formed by a first target flow speed threshold value and a second target flow speed threshold value can be divided into a plurality of flow speed reference value ranges through at least one flow speed intermediate value, and then interpolation calculation can be carried out between the most similar flow speed reference value ranges according to the air flow speed of a target point in space to obtain the target rotating speed. As an example of one possible implementation manner, as shown in fig. 3, the performing interpolation calculation based on the air flow velocity of the target point in the space, the first target flow velocity threshold, and the second target flow velocity threshold to obtain the target rotation speed may include:
in step 310, a target flow velocity reference value range in which the air flow velocity of the target point in the space is located is determined from the plurality of flow velocity reference value ranges.
In the embodiment of the present invention, the flow rate reference value ranges are obtained by dividing a numerical interval composed of a first target flow rate threshold value and a second target flow rate threshold value into a plurality of intervals by at least one flow rate median value, where the flow rate median value is greater than the first target flow rate threshold value and less than the second target flow rate threshold value. For example, taking the relationship table shown in table 2 above as an example, the interval [ V1, V5] composed of the first target flow rate threshold V1 and the second target flow rate threshold V5 may be divided into a plurality of flow rate reference value ranges by a plurality of intermediate flow rate values (e.g., V2, …, V3, …, V4 …, etc.), and [ V1, V5] may be divided into a plurality of flow rate reference value ranges, i.e., [ V1, V2], [ V2, V3], [ V3, V4], [ V4, V5] by taking the intermediate flow rate values V2, V3, and V4 as examples.
In this step, during the interpolation calculation, a target flow velocity reference value range in which the air velocity of the target point in the space is located needs to be determined from a plurality of flow velocity reference value ranges. For example, assuming that the calculated airflow velocity V at the target point in the space is greater than V3 and less than V4, the target airflow velocity reference value range where the airflow velocity V at the target point in the space is located can be determined as [ V3, V4] as an example of the relationship table shown in table 2.
In step 320, the operating speed of the first fan motor corresponding to the first threshold value in the target flow rate reference value range is determined, and the operating speed of the second fan motor corresponding to the second threshold value in the target flow rate reference value range is determined.
That is, after the target flow velocity reference value range in which the air flow velocity of the target point in the space is located is determined, the operating speed of the fan motor corresponding to the critical value in the target flow velocity reference value range can be found from the relationship table shown in the above table 2. For example, taking the target flow rate reference value range as [ V3, V4] as an example, the first fan motor operating speed corresponding to the first threshold value V3 in the target flow rate reference value range is R2, and the second fan motor operating speed corresponding to the second threshold value V4 in the target flow rate reference value range is R3.
And 330, performing interpolation calculation according to the air flow rate of the target point in the space, the first critical value, the second critical value, the operation rotating speed of the first fan motor and the operation rotating speed of the second fan motor to obtain a target rotating speed.
That is, the target rotation speed can be obtained by interpolation calculation between the closest flow speed reference value ranges according to the air flow speed of the target point in the space. For example, after obtaining the air flow rate, the first threshold value, the second threshold value, the first fan motor operating speed and the second fan motor operating speed of the target point in the space, the target speed for the indoor fan motor can be calculated by using the following interpolation formula (2):
Figure BDA0002471472100000111
wherein R is a target rotating speed; r2 is the operating speed of the first fan motor corresponding to the first threshold; r3 is the operating speed of the second fan motor corresponding to the second threshold; v3 is a first threshold value; v4 is a second critical value; v is the air velocity of the target point in the space.
Therefore, interpolation calculation is carried out between the most similar flow speed reference value ranges according to the air flow speed of the target point in the space, and then the air conditioner controller controls the calculated target rotating speed R as the target value of the indoor fan motor, so that the PMV value in the space is adjusted according to the rotating speed of the indoor fan motor, and the comfort level of a user is improved.
It should be noted that, if the type of the indoor fan motor is different, the control of the rotation speed of the fan motor will also be different. As an example of one possible implementation manner, the specific implementation process of performing corresponding control on the indoor fan motor according to the target rotation speed may be as follows: when the indoor fan motor is a stepless speed regulating motor, correspondingly controlling the indoor fan motor according to the target rotating speed; when the indoor fan motor is a stepped speed regulating motor, the operating rotating speed closest to the target rotating speed is found out from the operating rotating speeds of the first fan motor and the second fan motor, and the indoor fan motor is correspondingly controlled according to the found operating rotating speed closest to the target rotating speed.
That is, when the target rotating speed of the indoor fan motor is obtained, the type of the indoor fan motor needs to be determined first, and when the indoor fan motor is a stepless speed regulating motor, the target rotating speed obtained by calculation can be used as the target value of the indoor fan motor for control; when the indoor fan motor is a step speed regulation motor, the operating rotating speed closest to the calculated target rotating speed needs to be found from the existing gear rotating speeds to be used as the target value of the indoor fan motor for control. For example, taking the target flow velocity reference value range [ V3, V4] in which the air velocity V of the air at the target point in the space is located as an example, since the air velocity V of the air at the target point in the space falls between the flow velocity reference value ranges [ V3, V4], the operating rotational speed closest to the calculated target rotational speed R needs to be found from the first fan motor operating rotational speed R2 corresponding to the first threshold value V3 and the second fan motor operating rotational speed R3 corresponding to the second threshold value V4, for example, assuming that the operating rotational speed closest to the calculated target rotational speed R is R3, the found operating rotational speed R3 closest to the target rotational speed R can be controlled as the target value of the indoor fan motor. Therefore, the real situation of the indoor fan motor can be better met, and the PMV value in the space can be kept at a fixed target value as much as possible, so that the comfort level of a user is improved while energy-saving operation is carried out.
In order to make the air conditioner control flow more clearly understood by those skilled in the art, the following detailed description is provided.
For example, as shown in fig. 4, the air conditioner control method may include:
step 410, receiving a startup signal, collecting an initial temperature T0 in the air conditioner action space, and searching in the table 1 according to the initial temperature in the air conditioner action space and T0 to obtain a target clothing thermal resistance C, a target metabolic rate M and a target average radiation temperature TF corresponding to the initial temperature T0.
And step 420, controlling the rotating speed of the indoor fan motor to perform cooling or heating operation according to the highest operation rotating speed or a set rotating speed.
430, in the process of controlling the rotating speed of the indoor fan motor to perform cooling or heating operation according to the highest operating rotating speed or a set rotating speed, acquiring a temperature T ring in an acting space of the air conditioner in real time or periodically, and judging whether the detected current temperature T ring in the space reaches a target temperature T set (wherein the target temperature may be a certain set temperature), or judging whether a difference value Δ T between the temperature T ring in the space and the target temperature T set meets a condition, for example, when the air conditioner is in a cooling mode, Δ T is required to be less than or equal to TA; when the air conditioner is in a heating mode, the requirement that delta T is larger than or equal to TA is met, wherein TA is a target value.
Step 440, when it is judged that the current temperature T ring in the space reaches the target temperature T set, or the difference Δ T between the temperature T ring in the space and the target temperature T set satisfies the condition, that is, when the air conditioner is in the cooling mode, Δ T is required to be less than or equal to TA; when the air conditioner is in a heating mode, if delta T is required to be more than or equal to TA, the current air temperature T ring and the ambient humidity RH ring in the space can be collected and recorded.
Step 450, calculating a target point most comfortable air flow velocity V in the space as F1(T ring, RH ring, C, M, TF, PMV) according to the target human thermal comfort evaluation index value PMV (preferably, PMV is 0), the target clothing thermal resistance C, the target metabolic rate M, the target average radiation temperature TF, the current air temperature T ring, and the ambient humidity RH ring.
And step 460, calculating the corresponding rotating speed R of the indoor fan motor according to the calculated air flow rate of the target point in the space. For example, the corresponding rotation speed R of the indoor fan motor may be obtained by interpolation calculation based on the calculated air flow rate of the target point in the space and the nearest flow rate reference value range.
Step 470, the calculated rotation speed R is respectively compared with the lowest operation rotation speed R of the fan motorminMaximum operation speed R of fan motormaxA size comparison is performed. If R is less than or equal to RminThen R isminControlling as a target value of an indoor fan motor; if R is not less than RmaxThen R ismaxControlling as a target value of an indoor fan motor; if R ismin<R<RmaxThen step 480 is performed.
Step 480, determine the type of the indoor fan motor. If the indoor fan motor is a stepless speed regulating motor, the calculated rotating speed R can be used as a target value of the indoor fan motor for control; if the indoor fan motor is a step speed motor, step 490 continues.
Step 490, compare the difference between the calculated R and the adjacent R. For example, assuming that the rotation speed R and the adjacent rotation speeds are R2 and R3, respectively, if R ≦ 0.5 × (R3+ R2), R2 is controlled as the target value of the indoor fan motor; when R >0.5 × (R3+ R2), R3 is controlled as the target value of the indoor fan motor.
Step 401, in the process of controlling the indoor fan motor to operate according to the target value, it is possible to detect whether a difference Δ T between a temperature T ring in the space and a set temperature satisfies a condition. If the air conditioner is in the cooling mode and the delta T is less than or equal to TA, or the air conditioner is in the heating mode and the delta T is more than or equal to TA, the heating and cooling requirements are met, and the step 440 can be executed again to ensure that the air conditioner keeps continuous and comfortable operation; if the air conditioner is in the cooling mode and the delta T is set>TA, or the air conditioner is in heating mode and delta T<TA, the cooling and heating requirements of the user cannot be met at the moment, and the indoor fan motor needs to be controlled to operate at the highest rotating speed R at the momentmaxOr setting the rotation speed to perform cooling or heating operation, i.e. returning to step 420.
Therefore, the air conditioner control method provided by the embodiment of the invention firstly operates according to the set temperature when the air conditioner is started, and enters the indoor fan motor rotating speed control mode after the set temperature is reached, so that the purpose of comfortable and energy-saving operation is achieved.
Corresponding to the air conditioner control methods provided in the foregoing embodiments, an embodiment of the present invention further provides an air conditioner control device, and since the air conditioner control device provided in the embodiment of the present invention corresponds to the air conditioner control methods provided in the foregoing embodiments, the embodiments of the air conditioner control method described above are also applicable to the air conditioner control device provided in this embodiment, and will not be described in detail in this embodiment.
As shown in fig. 5, the air conditioner control device 500 according to the embodiment of the second aspect of the present invention includes a parameter acquisition module 510, a temperature and humidity acquisition module 520, an air flow rate determination module 530, and a fan motor control module 540.
The parameter obtaining module 510 is configured to obtain a target clothing thermal resistance, a target metabolic rate, and a target average radiation temperature in an air conditioner acting space. As an example, the parameter obtaining module 510 obtains an initial temperature in the air conditioner operation space, and obtains a target clothing thermal resistance, a target metabolic rate, and a target average radiation temperature according to the initial temperature in the air conditioner operation space.
The temperature and humidity acquiring module 520 is used for acquiring the temperature and humidity of the air in the space. As an example, the temperature and humidity acquisition module is specifically configured to: acquiring the temperature in an action space of the air conditioner; when the temperature in the air conditioner action space reaches a target temperature or the difference between the temperature in the air conditioner action space and the target temperature meets a target value, the temperature and the humidity of the air in the space are acquired.
The air flow rate determination module 530 is configured to determine an air flow rate of a target point in the space according to the target human thermal comfort evaluation index value, the target clothing thermal resistance, the target metabolic rate, the target average radiation temperature, and the air temperature and humidity in the space. Wherein the target human thermal comfort evaluation index value is 0.
The fan motor control module 540 is used for controlling the operation state of the indoor fan motor according to the air flow rate of the target point in the space. In some embodiments of the present invention, the fan motor control module 540 may include a target rotational speed determination unit and a control unit. The target rotating speed determining unit is used for determining the target rotating speed of the indoor fan motor according to the air flow rate of a target point in the space; and the control unit is used for correspondingly controlling the indoor fan motor according to the target rotating speed.
In some embodiments of the present invention, the target rotation speed determination unit is specifically configured to: comparing an air flow rate of a target point in the space with a first target flow rate threshold and a second target flow rate threshold for the target point; wherein the first target flow rate threshold is less than the second target flow rate threshold; if the air flow rate of a target point in the space is less than or equal to a first target flow rate threshold value, determining the lowest operation rotating speed of the fan motor as a target rotating speed; if the air flow rate of a target point in the space is greater than or equal to a second target flow rate threshold value, determining the highest operation rotating speed of the fan motor as a target rotating speed; and if the air flow velocity of the target point in the space is greater than the first target flow velocity threshold and less than the second target flow velocity threshold, performing interpolation calculation based on the air flow velocity of the target point in the space, the first target flow velocity threshold and the second target flow velocity threshold to obtain the target rotating speed.
In some embodiments of the present invention, the target rotation speed determination unit is specifically configured to: determining a target flow velocity reference value range in which the air flow velocity of a target point in the space is located from a plurality of flow velocity reference value ranges; the flow rate reference value ranges are obtained by dividing a numerical interval consisting of a first target flow rate threshold value and a second target flow rate threshold value into a plurality of intervals through at least one flow rate intermediate value, wherein the flow rate intermediate value is greater than the first target flow rate threshold value and less than the second target flow rate threshold value; determining the running rotating speed of a first fan motor corresponding to a first critical value in a target flow speed reference value range, and determining the running rotating speed of a second fan motor corresponding to a second critical value in the target flow speed reference value range; and carrying out interpolation calculation according to the air flow rate of the target point in the space, the first critical value, the second critical value, the running rotating speed of the first fan motor and the running rotating speed of the second fan motor to obtain the target rotating speed.
In some embodiments of the present invention, the control unit is specifically configured to: when the indoor fan motor is a stepless speed regulating motor, correspondingly controlling the indoor fan motor according to the target rotating speed; when the indoor fan motor is a stepped speed regulating motor, the operating rotating speed closest to the target rotating speed is found out from the operating rotating speeds of the first fan motor and the second fan motor, and the indoor fan motor is correspondingly controlled according to the found operating rotating speed closest to the target rotating speed.
According to the air conditioner control device provided by the embodiment of the invention, the target clothing thermal resistance, the target metabolic rate and the target average radiation temperature can be obtained in the air conditioner acting space through the parameter obtaining module, the temperature and humidity obtaining module obtains the air temperature and humidity in the space, the air flow rate determining module determines the air flow rate of a target point in the space according to the target human body thermal comfort evaluation index value, the target clothing thermal resistance, the target metabolic rate, the target average radiation temperature, the air temperature and humidity in the space, and the fan motor control module controls the running state of the indoor fan motor according to the air flow rate of the target point in the space. Therefore, the air flow rate in the space is calculated through the target human body thermal comfort evaluation index value and the influence factors (such as clothing thermal resistance, metabolic rate, average radiation temperature, air temperature and humidity in the space) of the index value, and then the rotating speed of the indoor fan motor is adjusted based on the air flow rate, so that the room air is kept in a continuous comfortable state, the air conditioner can be kept in continuous comfortable and energy-saving operation, the heating and cooling requirements of a user are met, and meanwhile, the comfort level of the user can be improved.
An air conditioner (not shown) according to an embodiment of a third aspect of the present invention includes an indoor fan motor; the temperature sensor is used for collecting the air temperature in the air conditioner acting space; the humidity sensor is used for acquiring the humidity in the air conditioner acting space; at least one processor; a memory communicatively coupled to the at least one processor; the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the air conditioner control method according to the embodiment of the first aspect of the present invention.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware that is related to instructions of a program, and the program may be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may also be stored in a computer readable storage medium.
In the description of the present invention, it is to be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. An air conditioner control method, comprising:
in an air conditioner action space, acquiring target clothing thermal resistance, target metabolic rate and target average radiation temperature;
acquiring the temperature and humidity of the air in the space;
determining the air flow rate of a target point in the space according to the target human body thermal comfort evaluation index value, the target clothing thermal resistance, the target metabolic rate, the target average radiation temperature, and the air temperature and humidity in the space;
and controlling the running state of the indoor fan motor according to the air velocity of the target point in the space.
2. The air conditioner controlling method according to claim 1, wherein the controlling of the operation state of the indoor fan motor according to the air flow rate of the target point in the space comprises:
determining the target rotating speed of the indoor fan motor according to the air flow velocity of the target point in the space;
and correspondingly controlling the indoor fan motor according to the target rotating speed.
3. The air conditioner control method according to claim 2, wherein said determining a target rotation speed of the indoor fan motor based on an air flow rate of the target point in the space comprises:
comparing an air flow rate at a target point in the space to a first target flow rate threshold and a second target flow rate threshold for the target point; wherein the first target flow rate threshold is less than the second target flow rate threshold;
if the air flow rate of a target point in the space is less than or equal to the first target flow rate threshold value, determining the lowest operation rotating speed of a fan motor as the target rotating speed;
if the air flow rate of the target point in the space is greater than or equal to the second target flow rate threshold value, determining the highest operation rotating speed of the fan motor as the target rotating speed;
and if the air flow velocity of the target point in the space is greater than the first target flow velocity threshold and less than the second target flow velocity threshold, performing interpolation calculation based on the air flow velocity of the target point in the space, the first target flow velocity threshold and the second target flow velocity threshold to obtain the target rotating speed.
4. The air conditioner control method according to claim 3, wherein the interpolating based on the air flow rate of the target point in the space, the first target flow rate threshold value and the second target flow rate threshold value to obtain the target rotation speed comprises:
determining a target flow speed reference value range in which the air flow speed of a target point in the space is located from a plurality of flow speed reference value ranges; wherein the flow rate reference value ranges are obtained by dividing a numerical interval consisting of the first target flow rate threshold value and the second target flow rate threshold value into a plurality of intervals through at least one flow rate intermediate value, and the flow rate intermediate value is greater than the first target flow rate threshold value and less than the second target flow rate threshold value;
determining the running rotating speed of a first fan motor corresponding to a first critical value in the target flow speed reference value range, and determining the running rotating speed of a second fan motor corresponding to a second critical value in the target flow speed reference value range;
and carrying out interpolation calculation according to the air flow velocity of the target point in the space, the first critical value, the second critical value, the running rotating speed of the first fan motor and the running rotating speed of the second fan motor to obtain the target rotating speed.
5. The air conditioner control method according to claim 4, wherein said controlling the indoor fan motor accordingly according to the target rotation speed includes:
when the indoor fan motor is a stepless speed regulating motor, correspondingly controlling the indoor fan motor according to the target rotating speed;
and when the indoor fan motor is a stepped speed regulating motor, finding out the operating rotating speed closest to the target rotating speed from the operating rotating speeds of the first fan motor and the second fan motor, and correspondingly controlling the indoor fan motor according to the found operating rotating speed closest to the target rotating speed.
6. The air conditioner control method according to any one of claims 1-5, wherein said obtaining a target clothing thermal resistance, a target metabolic rate, and a target average radiation temperature comprises:
acquiring the initial temperature in the air conditioner acting space;
and acquiring the target clothing thermal resistance, the target metabolic rate and the target average radiation temperature according to the initial temperature in the air conditioner action space.
7. The air conditioner control method according to any one of claims 1-5, wherein said obtaining the air temperature and humidity in the space includes:
acquiring the temperature in the air conditioner acting space;
and when the temperature in the air conditioner acting space reaches a target temperature or the difference between the temperature in the air conditioner acting space and the target temperature meets a target value, acquiring the temperature and the humidity of the air in the space.
8. The air conditioner control method according to any one of claims 1 to 5, wherein the target human thermal comfort evaluation index value is 0.
9. An air conditioner control device, comprising:
the parameter acquisition module is used for acquiring target clothing thermal resistance, target metabolic rate and target average radiation temperature in the air conditioner action space;
the temperature and humidity acquisition module is used for acquiring the temperature and humidity of the air in the space;
the air flow rate determining module is used for determining the air flow rate of a target point in the space according to a target human body thermal comfort evaluation index value, the target clothing thermal resistance, the target metabolic rate, the target average radiation temperature and the air temperature and humidity in the space;
and the fan motor control module is used for controlling the running state of the indoor fan motor according to the air flow rate of the target point in the space.
10. An air conditioner, comprising:
an indoor fan motor;
the temperature sensor is used for collecting the air temperature in the air conditioner acting space;
the humidity sensor is used for acquiring the humidity in the air conditioner acting space;
at least one processor;
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the air conditioner control method of any one of claims 1-8.
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CN105588275A (en) * 2015-11-06 2016-05-18 青岛海信日立空调***有限公司 Air conditioner comfort control method and device
CN105241035A (en) * 2015-11-26 2016-01-13 湘潭大学 Air conditioner control system based on dynamic heat comfort and control method thereof

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