CN113310192A

CN113310192A - Control method and device of air conditioner, air conditioner and computer readable storage medium

Info

Publication number: CN113310192A
Application number: CN202110645624.9A
Authority: CN
Inventors: 王军; 陈守海; 王宏超
Original assignee: Hisense Shandong Air Conditioning Co Ltd
Current assignee: Hisense Shandong Air Conditioning Co Ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2021-08-27

Abstract

The invention provides a control method and a control device of an air conditioner, the air conditioner and a computer readable storage medium, wherein the method comprises the following steps: acquiring a set PMV value and current environmental parameters of the air conditioner, wherein the environmental parameters comprise indoor temperature or relative humidity; determining a first target environment parameter according to a set PMV value and a current environment parameter; determining a second target environment parameter according to the set PMV value and the first target environment parameter; and controlling the air conditioner to operate according to the first target environmental parameter and the second target environmental parameter. According to the method and the device, the first target environment parameter and the second target environment parameter are determined according to the set PMV value and the indoor temperature or the relative humidity, the operation of the air conditioner is controlled according to the first target environment parameter and the second target environment parameter, the common control of the indoor temperature and the relative humidity is realized, and the air conditioner can accurately adjust the indoor comfort level according to the set PMV value, so that the comfort level of the indoor environment is improved, and the comfort experience of a user is improved.

Description

Control method and device of air conditioner, air conditioner and computer readable storage medium

Technical Field

The present invention relates to the field of air conditioner technologies, and in particular, to an air conditioner, an air conditioner control method and apparatus, and a computer-readable storage medium.

Background

The current air conditioner singly takes the temperature as a control target generally, and controls the running state of the air conditioner, so that the control of the indoor temperature is realized, and the requirement of a human body on comfort is further met.

However, in real life, relative humidity is also an important factor affecting the comfort of human body, for example, at a temperature of 27 ℃ and a relative humidity of 80%, the human body feels very hot and humid, and at the same temperature, at a relative humidity of 40%, the human body feels very comfortable. Therefore, the comfortable feeling of the human body cannot be really reflected only according to the ambient temperature, and the indoor comfort level cannot be accurately adjusted only by controlling the running state of the air conditioner through the temperature, so that the comfort level experience of a user is poor, and the requirement of the human body on the comfort level cannot be well met.

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 a method for controlling an air conditioner, which determines a first target environmental parameter and a second target environmental parameter according to a set PMV value and an indoor temperature or a relative humidity, and controls the operation of the air conditioner accordingly to achieve a common control of the indoor temperature and the relative humidity, so that the air conditioner can accurately adjust an indoor comfort level according to the set PMV value, thereby improving the comfort level of the indoor environment and improving a comfort experience of a user.

Therefore, a second object of the present invention is to provide a control device for an air conditioner.

To this end, a third object of the present invention is to provide an air conditioner.

To this end, a fourth object of the invention is to propose a computer-readable storage medium.

In order to achieve the above object, an embodiment of a first aspect of the present invention proposes a control method of an air conditioner, the method including: acquiring a set PMV value and current environmental parameters of the air conditioner, wherein the environmental parameters comprise indoor temperature or relative humidity; determining a first target environment parameter according to the set PMV value and the current environment parameter; determining a second target environment parameter according to the set PMV value and the first target environment parameter; and controlling the air conditioner to operate according to the first target environmental parameter and the second target environmental parameter.

According to the control method of the air conditioner, the set PMV value and the current environment parameter such as the indoor temperature Ta or the relative humidity Rh are obtained, the first target environment parameter is determined, the second target environment parameter is determined according to the set PMV value and the first target environment parameter, and the first target environment parameter and the second target environment parameter are used as the control parameters to control the operation of the air conditioner, so that the common control of the indoor temperature Ta and the relative humidity Rh is realized, the air conditioner can accurately adjust the indoor comfort level according to the set PMV value, the problem that the actual comfort level of a user is poor due to the fact that the relative humidity Rh is higher or lower when the indoor temperature Ta is proper is avoided, the comfort level of the indoor environment is improved, and the comfort experience of the user is improved.

In some embodiments, determining a first target environmental parameter from the set PMV value and the current environmental parameter comprises: acquiring a plurality of target environment parameters corresponding to the set PMV value; and taking a value which is equal to the environmental parameter or smaller than the current environmental parameter and is closest to the value of the current environmental parameter in the plurality of target environmental parameters as the first target environmental parameter, or taking the value which is the smallest in the plurality of target environmental parameters as the first target environmental parameter when the air conditioner heats.

In some embodiments, among a plurality of enthalpy difference values obtained by subtracting the enthalpy values corresponding to the target environmental parameters from the enthalpy value corresponding to the current environmental parameter, the enthalpy difference value corresponding to the first target environmental parameter and the current environmental parameter is the smallest.

In some embodiments, the determining a second target environmental parameter from the set PMV value and the first target environmental parameter comprises: and inputting the set PMV value and the first target environment parameter into a preset functional relation of the PMV value, the first target environment parameter and the second target environment parameter to obtain the second target environment parameter.

In some embodiments, the determining a second target environmental parameter from the set PMV value and the first target environmental parameter comprises: when the current situation in summer is detected, inquiring a mapping table of corresponding relations of a first preset PMV value, a first target environment parameter and a second target environment parameter to obtain the second target environment parameter; and when the current situation in winter is detected, inquiring a mapping table of the corresponding relation of a second preset PMV value, the first target environment parameter and the second target environment parameter to obtain the second target environment parameter. The first preset PMV value-first target environment parameter-second target environment parameter corresponding relation mapping table and the second preset PMV value-first target environment parameter-second target environment parameter corresponding relation mapping table respectively comprise multiple groups of corresponding relations among PMV values-first target environment parameters-second target environment parameters.

In some embodiments, the control method of the air conditioner further includes: when the air conditioner is used for refrigerating, determining a new first target environmental parameter and a new second target environmental parameter by taking preset time as a period, so that the air conditioner operates according to the new first target environmental parameter and the new second target environmental parameter; and when the air conditioner heats, controlling the humidifier of the air conditioner to operate or stop so as to enable the air conditioner to operate according to the first target environment parameter and the second target environment parameter all the time.

In some embodiments, the environmental parameter is relative humidity, the corresponding first target environmental parameter is target relative humidity, and the corresponding second target environmental parameter is target indoor temperature; or, the environmental parameter is an indoor temperature, the corresponding first target environmental parameter is a target indoor temperature, and the corresponding second target environmental parameter is a target relative humidity.

To achieve the above object, an embodiment of a second aspect of the present invention proposes a control device of an air conditioner, the device including: the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring a set PMV value of the air conditioner and a current environmental parameter, and the environmental parameter comprises indoor temperature or relative humidity; the first determining module is used for determining a first target environment parameter according to the set PMV value and the current environment parameter; the second determining module is used for determining a second target environment parameter according to the set PMV value and the first target environment parameter; and the control module is used for controlling the air conditioner to operate according to the first target environmental parameter and the second target environmental parameter.

According to the control device of the air conditioner, the first target environment parameter is determined by obtaining the set PMV value and the current environment parameter, such as the indoor temperature Ta or the relative humidity Rh, the second target environment parameter is determined according to the set PMV value and the first target environment parameter, and the first target environment parameter and the second target environment parameter are used as the control parameters to control the operation of the air conditioner, so that the common control of the indoor temperature Ta and the relative humidity Rh is realized, the air conditioner can accurately adjust the indoor comfort level according to the set PMV value, the problem that the actual comfort level of a user is poor due to the fact that the relative humidity Rh is higher or lower when the indoor temperature Ta is proper is avoided being singly used as the control target, the comfort level of the indoor environment is improved, and the comfort experience of the user is improved.

To achieve the above object, an embodiment of a third aspect of the present invention proposes an air conditioner including: the control device of the air conditioner described in the above embodiment; or a processor, a memory and a control program of the air conditioner stored on the memory and operable on the processor, wherein the control program of the air conditioner realizes the control method of the air conditioner according to the above embodiment when executed by the processor.

According to the air conditioner provided by the embodiment of the invention, the first target environment parameter is determined by acquiring the set PMV value and the current environment parameter, such as the indoor temperature Ta or the relative humidity Rh, the second target environment parameter is determined according to the set PMV value and the first target environment parameter, and the first target environment parameter and the second target environment parameter are used as control parameters to control the operation of the air conditioner, so that the common control of the indoor temperature Ta and the relative humidity Rh is realized, the air conditioner can accurately adjust the indoor comfort level according to the set PMV value, the problem that the real comfort level of a user is poor in feeling due to the fact that the relative humidity Rh is higher or lower when the indoor temperature Ta is proper is avoided, the comfort level of the indoor environment is improved, and the comfort experience of the user is improved.

To achieve the above object, an embodiment of a fourth aspect of the present invention proposes a computer-readable storage medium having stored thereon a control program of an air conditioner, which when executed by a processor, implements the control method of the air conditioner described in the above embodiment.

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 a control method of an air conditioner according to an embodiment of the present invention;

figure 2 is a schematic diagram of an air psychrometric chart according to one embodiment of the present invention;

figure 3 is a schematic diagram of an air psychrometric chart according to another embodiment of the present invention;

fig. 4 is a block diagram of a control apparatus of an air conditioner according to an embodiment of the present invention.

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.

The embodiment of the invention takes the PMV (Predicted Mean volume) as the basis, and controls the air conditioner by combining the indoor temperature or the relative humidity, and compared with singly reflecting the comfort through the temperature, the PMV value can more accurately and dynamically reflect the real comfort of the human body, and reflects the real feeling of the human body to the temperature, the humidity and the wind. When the PMV value is between-0.5 and 0.5, the human body is considered to be in an A-level comfortable interval, the central value is 0.0, and the indoor temperature and the relative humidity are jointly controlled according to the PMV value, so that the air conditioner can accurately adjust the indoor comfort level according to the set PMV value, the comfort level of the indoor environment is improved, and the comfort experience of a user is improved.

Specifically, the definition of PMV is: taking a basic equation of human body heat balance and the grade of psychophysiological subjective heat sensation as starting points, considering comprehensive evaluation indexes of relevant factors such as human body heat sensation and comfort sensation, and the PMV index shows the average index of a group for seven grades, such as seven grades (-3- +3) of heat sensation voting. Generally, when the PMV value is between-0.5 and 0.5, the human body is in the A-level comfortable interval.

In the embodiment of the present invention, the calculation function of the PMV is PMV ═ f (Ta, Va, Rh, T τ, M, cIo), and it can be seen from the function that the PMV is calculated by 4 environmental factors and 2 human factors, where the 4 environmental factors, such as air temperature Ta, relative humidity Rh, air wind speed Va, average radiation temperature T τ, and 2 human factors, such as human metabolic rate M and clothing thermal resistance clo, get the PMV value by substituting the 4 environmental factors and the 2 human factors into the calculation function of the PMV. Since the average radiation temperature T τ is the air temperature Ta detected by the air conditioner, the air temperature Ta is the indoor temperature, and the relative humidity Rh is the humidity detected by the air conditioner; the air speed is set to be Va 0.1m/s, if the air conditioner is started with the direct blowing prevention function, the air conditioner is set to be low wind, the wind guide mechanism of the air conditioner controls the wind outlet airflow to follow the ceiling, the cold air density is high, the principle of sedimentation is utilized, the patio airflow is achieved, and at the moment, the air speed of the air conditioner is considered to be breeze or ultralow breeze airflow. Thus, the complex function of PMV ═ f (Ta, Va, Rh, T τ, M, cIo) is simplified to the known air temperature Ta and humidity Rh, and the simple function of PMV value, i.e., the function of PMV ═ f (Ta, Rh), is solved. Therefore, the analytic function of the PMV is converted into a three-dimensional array list, and engineering application is facilitated.

It can be seen that the PMV can reflect the average index of the population to the thermal sensation level in consideration of the factors of temperature, humidity, wind speed and the like, and is closer to the real comfortable feeling of the human body compared with the single temperature-based comfort response, and is the real feeling of the human body to the temperature, the relative humidity and the wind speed. For example, in real life, when the air speed is set to be 0.1m/s, the indoor temperature Ta is 27 ℃ and the relative humidity Rh is 80%, the PMV is obtained by functional calculation to be 0.72 and already exceeds the A-level comfort interval; and under the condition that the indoor temperature Ta is the same, when the relative humidity is 40%, the corresponding PMV is 0.41, the PMV is in an A-level comfortable area, and when the PMV is in the A-level comfortable area, the PMV is closer to the real comfortable feeling of a human body, so that when the relative humidity in the air is lower, the human body can feel dry and comfortable even if the temperature is relatively higher. From this, through introducing PMV, control indoor temperature and relative humidity, can accurate regulation indoor comfort level to, improve the comfort level of indoor environment, improve user's comfort and experience.

A method for controlling an air conditioner according to an embodiment of the present invention will be described below.

A control method of an air conditioner according to an embodiment of the present invention is described below with reference to fig. 1, and as described in fig. 1, the control method of an air conditioner of an embodiment of the present invention includes at least steps S1 through S4.

Step S1, obtaining a set PMV value of the air conditioner and a current environmental parameter, where the environmental parameter includes an indoor temperature or a relative humidity.

In an embodiment, a PMV value is set, e.g. a target PMV set by the user according to a thermal sensing requirement, e.g. noted PMV _ s. Specifically, the user may input the set PMV value of the air conditioner, for example, to 0.0, i.e., PMV _ s is 0.0, through, but not limited to, an air conditioner remote controller or an associated key on an operation interface on the air conditioner body. And in the running process of the air conditioner, the air conditioner can acquire relative humidity Rh through a humidity sensor, can acquire indoor temperature Ta through a temperature sensor, and takes the set PMV _ s value and the relative humidity Rh as control parameters of the control process of the subsequent air conditioner, or takes the set PMV value and the indoor temperature Ta as control parameters of the control process of the subsequent air conditioner. It can be understood that the set PMV value is a function operation value, and is not directly detected by the air conditioner, and the set PMV value is used as a comfort control parameter of the air conditioner to reflect the comfort requirement of the user. In other words, the air conditioner can truly and accurately reflect the requirement of a user on comfort by setting the PMV value, and further, the indoor comfort can be accurately adjusted.

Specifically, the current environmental parameters comprise relative humidity Rh or indoor temperature Ta, and a PMV value and the relative humidity Rh/indoor temperature Ta are set as control parameters of a subsequent air conditioner control process, so that the indoor comfort level can be accurately adjusted, and the real comfort level requirement of a user is met. It should be noted that, the process of controlling the air conditioner according to the set PMV value and the indoor temperature Ta is similar to the process of controlling the air conditioner according to the set PMV value and the relative humidity Rh, and the following control process is described with the current environmental parameter as the relative humidity Rh as an example.

Step S2, determining a first target environmental parameter according to the set PMV value and the current environmental parameter.

In an embodiment, the first target environmental parameter is determined in relation to the set PMV value and the current environmental parameter, and when the current environmental parameter is Rh, the first target environmental parameter is determined according to the set PMV value and Rh, and at this time, the first target environmental parameter is a target relative humidity, for example, recorded as Rhs.

It will be appreciated that the current season or operating mode of the air conditioner may also be considered when determining the first target environmental parameter based on the set PMV value and the current environmental parameter, since the operating mode selected by the air conditioner is also different in different seasons. For example, in summer, the air conditioner generally operates in a cooling mode, and in winter, the air conditioner generally operates in a heating mode.

For example, in summer, the human body metabolic rate M is 1.2, and the clothing thermal resistance clo is 0.5, and at this time, the air conditioner is cooling, and when the set PMV value is determined to be 0.0, that is, PMV _ s is 0.0, the current relative humidity Rh is detected by the humidity sensor, and when the relative humidity Rh is detected to be 82%, for example, the target relative humidity Rhs is determined to be 65%, that is, Rhs is 65%, based on the set PMV value and the relative humidity Rh.

For example, in winter, the human body metabolic rate M is 1.2 and the clothing thermal resistance clo is 1.0, and at this time, the air conditioner heats up, and when the set PMV value is determined to be 0.0, that is, PMV _ s is 0.0, the current relative humidity is detected by the humidity sensor, and the target relative humidity Rhs is determined to be 40%, that is, Rhs is 40% from the set PMV value and the relative humidity Rh.

Correspondingly, when the current environmental parameter is the indoor temperature Ta, the first target environmental parameter is determined according to the set PMV value and the indoor temperature Ta, and at this time, the first target environmental parameter is the target indoor temperature, for example, denoted as Ts.

Step S3, determining a second target environmental parameter according to the set PMV value and the first target environmental parameter.

In an embodiment, the second target environmental parameter is determined by performing table lookup or function calculation according to the set PMV value and the target relative humidity Rhs when the first target environmental parameter is the target relative humidity Rhs, and at this time, the second target environmental parameter is the target indoor temperature Ts.

It will be appreciated that the current season or operating mode of the air conditioner may also be considered when determining the second target environmental parameter based on the set PMV value and the first target environmental parameter, since the operating mode selected by the air conditioner is also different in different seasons. For example, in summer, the air conditioner is generally operated in a cooling mode, and in winter, the air conditioner is generally operated in a heating mode.

For example, in summer, when the human body metabolic rate M is 1.2 and the clothing thermal resistance clo is 0.5, and at this time, the air conditioner is refrigerating, and when the PMV _ s is 0.0 and the target relative humidity Rhs is 65%, the target indoor temperature Ts is determined to be 25 ℃ by a table lookup or a function calculation method, that is, Ts is 25 ℃.

For another example, in winter, the human body metabolic rate M is 1.2, and the clothing thermal resistance clo is 1.0, and at this time, the air conditioner heats, the PMV _ s is 0.0 and the target relative humidity Rhs is 40%, and the target indoor temperature Ts is determined to be 23 ℃, that is, Ts is 23 ℃ by a table lookup or a function calculation method.

Correspondingly, when the first target environmental parameter is the target indoor temperature Ts, the second target environmental parameter is determined by table lookup or function calculation according to the set PMV value and the target indoor temperature Ts, at this time, the second target environmental parameter is the target relative humidity Rhs, and the process is similar to that when the first target environmental parameter is the target relative humidity Rhs, and is not repeated here.

And step S4, controlling the air conditioner to operate according to the first target environmental parameter and the second target environmental parameter.

In the embodiment, the first target environment parameter and the second target environment parameter are determined to be related to the set PMV value, after the first target environment parameter and the second target environment parameter are determined, the air conditioner is controlled based on the first target environment parameter and the second target environment parameter, common control over temperature and humidity is achieved, the air conditioner can operate according to the set PMV value, the indoor actual PMV value can reach the set PMV value, the indoor actual comfort level can meet the real comfort level requirement of a user, and therefore user comfort level experience is improved. It can be understood that the operation of the air conditioner is controlled based on the target relative humidity Rhs and the target indoor temperature Ts, the influence of the temperature and the humidity on the indoor environment is considered, and compared with single temperature control, the indoor comfort degree can be accurately adjusted, so that the comfort degree of the indoor environment is improved, and the requirement of a human body on the comfort degree is met.

In some embodiments, determining the first target environmental parameter based on the set PMV value and the current environmental parameter comprises: acquiring a plurality of target environment parameters corresponding to a set PMV value; when the air conditioner is used for cooling, the value which is equal to the environmental parameter or smaller than the current environmental parameter and is closest to the value of the current environmental parameter in the target environmental parameters is used as a first target environmental parameter, or when the air conditioner is used for heating, the value which is the smallest in the target environmental parameters is used as the first target environmental parameter.

It will be appreciated that the same PMV value may correspond to a plurality of different sets of air temperature Ta and relative humidity Rh, in other words, a plurality of different sets of air temperature Ta and relative humidity Rh, which may ultimately correspond to the same PMV value. For example, when the air conditioner is cooling, the PMV value is set to 0.0, and the air temperature Ta and the relative humidity Rh corresponding thereto may be 25 ℃ and 65%, respectively, or 25.5 ℃ and 55%, respectively, or 26 ℃ and 45%, respectively. For example, in the case of air-conditioning heating, the PMV value is set to 0.0, and the corresponding air temperature Ta and relative humidity Rh may be 23 ℃ and 30%, respectively, or 22.5 ℃ and 45%, and 22 ℃ and 60%, respectively. Thus, after determining the set PMV value, a plurality of target environmental parameters, such as a plurality of target relative humidities Rhs or a plurality of target indoor temperatures Ts, corresponding to the set PMV value may be obtained. Further, a first target parameter that is ultimately required, i.e., a target relative humidity Rhs or a target indoor temperature Ts, may be determined from the set PMV value corresponding to the plurality of target environmental parameters.

When the air conditioner is used for cooling, after a plurality of target environment parameters are determined, the detected current environment parameters can be compared with the plurality of target environment parameters, if the target environment parameters with the same numerical values as the current environment parameters exist, the target environment parameters are used as first target environment parameters, and if the target environment parameters with the same numerical values as the current environment parameters do not exist, the target environment parameters with the numerical values smaller than the current target environment parameters and closest to the current target environment parameters in the plurality of target environment parameters are used as the first target environment parameters. Or, when the air conditioner heats, after the plurality of target environment parameters are determined, the first target environment parameter is the smallest value of the plurality of target environment parameters.

Taking the environmental parameter as the relative humidity as an example, when the PMV value is set to 0, a plurality of target relative humidities Rhs corresponding to the set PMV value are obtained. Wherein each set PMV value corresponds to a plurality of target relative humidities Rhs. For example, when the PMV value is set to 0 during cooling of the air conditioner, the target relative humidity Rhs corresponding to the set PMV value may be 35%, 65%, 55%, or the like. During the operation of the air conditioner with the set PMV value, if it is detected that the current relative humidity is 35%, since the determined values of the target relative humidity Rhs, for example, 35%, 65%, and 55% have a value equal to the current relative humidity 35%, selecting the value equal to the current relative humidity value from the target relative humidities Rhs as the first target environmental parameter, that is, the first target environmental parameter is 35%; if it is detected that the current relative humidity is 82%, because there is no one with the same relative humidity as the current relative humidity among the determined values of the target relative humidities Rhs, selecting 65% which is the closest to the current relative humidity and is smaller than the current relative humidity from the target relative humidities Rhs as a first target environmental parameter, that is, the value of the first target environmental parameter is 65%, that is, the finally required target relative humidity Rhs; for another example, when the current relative humidity is detected to be 59%, a target relative humidity Rhs having a value smaller than the current relative humidity and closest to the current target relative humidity is selected from the plurality of target relative humidities Rhs to be 55%, and then 55% is used as the first target environmental parameter, that is, the finally required target relative humidity Rhs.

When the air conditioner heats, if the humidity of the room is increased to a comfortable humidity range, the humidifying function may need to be turned on. For example, when the PMV value is set to 0, the intervals in which the plurality of target environmental parameters are located are adjusted, for example, to 40% to 65% in consideration of factors such as the humidifier control accuracy and the detection error, and in this case, the target relative humidity Rhs corresponding to the set PMV value may be 40%, 65%, 55%, and the like. In the operation process of the air conditioner with the set PMV value, the air conditioner selects the minimum value of the target relative humidities as a first target environmental parameter, namely Rhs-40% is selected as the first target environmental parameter.

It is understood that there may be a plurality of target environmental parameters corresponding to one set PMV value, but the values of the plurality of target environmental parameters may be different, and thus, the energy consumption required for adjusting the detected current environmental parameter value to the values of the plurality of target parameters respectively is also different. The smaller the difference between the value of the target environmental parameter and the current environmental parameter is, the smaller the energy consumption required for adjusting the current environmental parameter to the target environmental parameter is, so that when the air conditioner is used for refrigerating, a first target parameter is set as one of the target environmental parameters with the value equal to the current environmental parameter, or when the difference does not exist, a first target parameter is set as one of the target environmental parameters with the value smaller than the current environmental parameter and closest to the current environmental parameter; or when the air conditioner heats, the minimum value of the plurality of target environment parameters is used as the first target environment parameter, so that the PMV value can be set, and meanwhile, the energy consumption is reduced to the maximum extent, namely, the energy is saved most. Therefore, in the embodiment of the invention, when refrigerating, by selecting the one of the plurality of target environment parameters which has the value equal to or less than the current environment parameter and is closest to the current environment parameter as the first target environment parameter, or when heating, the one of the plurality of target environment parameters which has the smallest value is taken as the first target environment parameter, the PMV value is set, and meanwhile, the operation energy consumption of the air conditioner is saved to the greatest extent, so that the air conditioner is more energy-saving.

In some embodiments, among a plurality of enthalpy difference values obtained by subtracting the enthalpy values corresponding to the target environmental parameters from the enthalpy value corresponding to the current environmental parameter, the enthalpy difference value corresponding to the first target environmental parameter and the current environmental parameter is the smallest. Specifically, the current environmental parameter, such as the current relative humidity Rh or the indoor temperature Ta, has a corresponding enthalpy value in the air enthalpy diagram, and similarly, the target environmental parameters also have corresponding enthalpy values in the air enthalpy diagram, and the enthalpy values corresponding to the target environmental parameters are respectively different from the enthalpy values corresponding to the current environmental parameters to obtain enthalpy value differences, and the target environmental parameters include the first target environmental parameter.

It is to be understood that in the air psychrometric chart, a plurality of state points are generally corresponding to the same set PMV value, that is, the PMV values corresponding to these state points are equal, and the coordinates of each state point correspond to a data set consisting of the target indoor temperature Ts and the target relative humidity Rhs, whereby, in the air psychrometric chart, a plurality of state points corresponding to the same set PMV are represented by a plurality of data sets consisting of the target indoor temperature Ts and the target relative humidity Rhs. The coordinates of the points corresponding to the currently detected indoor temperature Ta and the currently detected relative humidity Rh are also embodied as a set of data sets, so that in the air psychrometric chart, the target relative humidity Rhs or the target indoor temperature Ts corresponding to the point closest to the point among the plurality of state points is the first target environmental parameter, and the difference between the corresponding enthalpy value and the enthalpy value corresponding to the currently detected indoor temperature Ta and the relative humidity Rh is the minimum, so that when the currently detected indoor temperature Ta and the currently detected relative humidity Rh are adjusted to the target indoor temperature Ts or the target relative humidity Rhs, the required energy consumption is the lowest, namely, the energy is saved the most.

For example, when the air conditioner is refrigerating, as shown in fig. 2, it is a schematic diagram of an air psychrometric chart according to an embodiment of the present invention. As can be seen from fig. 2, the current indoor temperature Ta is 29 ℃ and the relative humidity Rh is 90%, which corresponds to the state point a; if the PMV value is set to 0.0, the corresponding multiple state points in the air psychrometric chart are respectively as follows: the enthalpy values of the four state points of the A state point, the B state point, the C state point and the D state point in the air enthalpy-humidity diagram are different and are respectively on the corresponding equal enthalpy lines, wherein the equal enthalpy line represents that the corresponding enthalpy value of each state point on the line is the same. Wherein, the enthalpy value corresponding to the state point A is ha, the enthalpy value corresponding to the state point B is hb, the enthalpy value corresponding to the state point C is hc, and the enthalpy value corresponding to the state point D is hd, and as can be seen from figure 2, the enthalpy values corresponding to the four state points are ha > hb > hc > hd. Therefore, the enthalpy difference value required for adjusting the relative humidity from the state A point to the state B point is ha-hb; adjusting the relative humidity from the A state point to the C state point, wherein the enthalpy difference value is ha-hc; the enthalpy difference value needed for adjusting the relative humidity from the state point A to the state point D is ha-hd, and the enthalpy difference value between the state point A and each of the other state points indicates that (ha-hb) < (ha-hc) < (ha-hd), so that the current relative humidity or indoor temperature is adjusted from the state point A to the target relative humidity Rhs or the target indoor temperature Ts corresponding to the state point B, and the energy is saved. And the PMV values corresponding to the B state point, the C state point and the D state point are the same, so that the comfort feeling of a user is the same under the set PMV value, but the power consumption required by the air conditioner is different, and therefore, the B point closest to the A point is selected, and the energy consumption can be saved to the maximum extent. Therefore, the minimum enthalpy difference value between the target environmental parameters and the current environmental parameter is selected as the first target environmental parameter, and the energy consumption of the air conditioner can be saved to the maximum extent on the premise of meeting the comfort experience of a user.

In the heating process of the air conditioner, as shown in fig. 3, a schematic diagram of an air psychrometric chart according to an embodiment of the present invention is shown. As can be seen from fig. 3, the current indoor temperature Ta is 15 ℃ and the relative humidity Rh is 60%, which corresponds to the state point a; if the PMV value is set to 0.0, the corresponding multiple state points in the air psychrometric chart are respectively as follows: the enthalpy values of the four state points of the A state point, the B state point, the C state point and the D state point in the air enthalpy-humidity diagram are different and are respectively on the corresponding equal enthalpy lines, wherein the equal enthalpy line represents that the corresponding enthalpy value of each state point on the line is the same. Wherein, the enthalpy value corresponding to the state point A is ha, the enthalpy value corresponding to the state point B is hb, the enthalpy value corresponding to the state point C is hc, and the enthalpy value corresponding to the state point D is hd, and as can be seen from figure 3, the enthalpy values corresponding to the four state points are hd > hc > hb > ha. Therefore, the enthalpy difference value required for adjusting the relative humidity from the state A point to the state B point is hb-ha; adjusting the relative humidity from the A state point to the C state point, wherein the required enthalpy difference value is hc-ha; the enthalpy difference value needed for adjusting the relative humidity from the state point A to the state point D is hd-ha, and the enthalpy difference value between the state point A and each of the other state points indicates that (hb-ha) < (hc-ha) < (hd-ha), so that the current relative humidity or indoor temperature is adjusted from the state point A to the target relative humidity Rhs or the target indoor temperature Ts corresponding to the state point B, and the energy is saved. And the PMV values corresponding to the B state point, the C state point and the D state point are the same, so that the comfort feeling of a user is the same under the set PMV value, but the power consumption required by the air conditioner is different, and therefore, the B state point closest to the A state point is selected, and the energy consumption can be saved to the maximum extent. Therefore, the minimum enthalpy difference value between the target environmental parameters and the current environmental parameter is selected as the first target environmental parameter, and the energy consumption of the air conditioner can be saved to the maximum extent on the premise of meeting the comfort experience of a user.

It should be noted that, when the air conditioner is heating, the humidification function may need to be turned on synchronously, and if the air conditioner is not turned on, the relative humidity will not increase but decrease, as shown in fig. 3, the indoor temperature Ta corresponding to the E state point is 10 ℃ and the relative humidity Rh is 45%; the indoor temperature Ta corresponding to the F state point is 23 ℃ and the relative humidity Rh is 20%, and if the E state point is adjusted to the F state point, the relative humidity Rh is decreased to 20%. It can be seen that when the air conditioner operates in the heating mode, a human body feels very dry without turning on the humidifier.

If the state point A is adjusted to the nearest state point B, the indoor temperature Ta is increased to 23 ℃ from 15 ℃, the relative humidity Rh is decreased to 40% from 60%, and the relative humidity Rh is decreased to 40% according to the enthalpy-humidity theory diagram, so that the equal-humidity heating process is realized, and the humidifier does not need to be controlled to be started at the moment, so that the state point A is adjusted to the nearest state point B, and energy is saved. However, if the state point E is adjusted to the state point B, the humidification function needs to be turned on, and the indoor temperature Ta and the relative humidity Rh can be adjusted to 23 ℃ and 40%, respectively.

In some embodiments, determining the second target environmental parameter based on the set PMV value and the first target environmental parameter comprises: and inputting the set PMV value and the first target environment parameter into a preset functional relation of the PMV value, the first target environment parameter and the second target environment parameter to obtain a second target environment parameter. Taking the first target environmental parameter as the target relative humidity Rhs as an example, the determination of the second target environmental parameter, i.e., the target indoor temperature Ts is described, specifically, a functional correspondence relationship exists among the PMV value, the target relative humidity Rhs and the target indoor temperature Ts, for example, PMV ═ f (Ts, Rhs), and it can be seen that the target indoor temperature Ts can be obtained by calculating by substituting the set PMV value and the target relative humidity Rhs into the functional relationship equation. For example, in summer, the clothing thermal resistance clo is 0.5, the human body metabolic rate M is 1.2, and at this time, the air conditioner performs cooling, the set PMV value is 0 and the set relative humidity Rhs is 50% are substituted into the above function calculation formula, and the target indoor temperature Ts is 25.5 ℃, that is, Ts is 25.5 ℃. For example, in winter, the human body metabolic rate M is 1.2 and the clothing thermal resistance clo is 1.0, and at this time, the air conditioner heats, the set PMV value is 0 and the set relative humidity Rhs is 40% are substituted into the function calculation formula, and the target indoor temperature Ts is 23 ℃, that is, Ts is 23 ℃.

In some embodiments, determining the second target environmental parameter based on the set PMV value and the first target environmental parameter comprises: and obtaining a second target environment parameter by inquiring a preset PMV value-first target environment parameter-second target environment parameter corresponding relation mapping table, wherein the PMV value-first target environment parameter-second target environment parameter corresponding relation mapping table comprises a plurality of groups of PMV values-first target environment parameters-second target environment parameters. It can be understood that, the corresponding relationship among the PMV value, the first target environment parameter and the second target environment parameter is set, any two parameters are determined, and the other parameter can be obtained by looking up the table. Of course, in the specific embodiment, when two parameters are determined, another parameter may be obtained by performing an operation as a function of PMV ═ f (Ta, Rh). The preset mapping table of correspondence between the PMV value, the first target environmental parameter, and the second target environmental parameter is obtained by, for example, calibration according to a large amount of test data, for example, according to a function decoupling of PMV ═ f (Ta, Rh), a large amount of data of correspondence between the PMV value, the first target environmental parameter, and the second target environmental parameter is obtained by calibration, and then the preset mapping table of correspondence between the PMV value, the first target environmental parameter, and the second target environmental parameter is obtained by calibration.

Specifically, the preset mapping table of correspondence between the PMV value, the first target environment parameter, and the second target environment parameter at least includes: the method comprises the following steps that a first preset PMV value-first target environment parameter-second target environment parameter corresponding relation mapping table and a second preset PMV value-first target environment parameter-second target environment parameter corresponding relation mapping table are obtained, wherein when the condition that summer is detected currently, the first preset PMV value-first target environment parameter-second target environment parameter corresponding relation mapping table is inquired to obtain a second target environment parameter; and when the current situation in winter is detected, inquiring a mapping table of the corresponding relation of a second preset PMV value, the first target environment parameter and the second target environment parameter to obtain a second target environment parameter. It can be understood that the thermal resistance of the garment is different in different seasons, for example, the thermal resistance clo of the garment is 0.5 in summer, and the thermal resistance clo of the garment is 1.0 in winter, which is a value that affects PMV and thus affects the corresponding second target environmental parameter. Therefore, the mapping tables of the correspondence relationship between the PMV value, the first target environment parameter, and the second target environment parameter corresponding to the winter season and the summer season are different, so in the embodiment of the present invention, the mapping table of the correspondence relationship between the first preset PMV value, the first target environment parameter, and the second target environment parameter is obtained by querying the mapping table of the correspondence relationship between the first preset PMV value, the first target environment parameter, and the second target environment parameter in the summer season; in winter, inquiring a mapping table of correspondence between a second preset PMV value, a first target environment parameter and a second target environment parameter to obtain a second target environment parameter.

In a specific embodiment, the manner of detecting the current season may include: determining the current season according to the current environmental parameters; and/or synchronously determining the current season according to the season information displayed by the intelligent terminal.

The following description will be made of a process of determining the target indoor temperature Ts, which is the second target environmental parameter, when determining the set PMV value and the target relative humidity Rhs, taking the first target environmental parameter as the target relative humidity Rhs as an example.

Specifically, as shown in table 1, when the air conditioner is cooling in summer, the map is an example of a mapping table of a first preset PMV value-target indoor temperature-target relative humidity correspondence according to an embodiment of the present invention. Wherein, the human body metabolic rate M and the clothing thermal resistance clo are respectively 1.2 and 0.5.

TABLE 1 mapping table of correspondence relationship between first preset PMV value, target indoor temperature and target relative humidity

Wherein, the first behavior target relative humidity Rhs in table 1, the left column is the target indoor temperature Ts, the value in table 1 is the set PMV, when the target relative humidity Rhs is 80% and the target indoor temperature Ts is 27 ℃, the corresponding set PMV value obtained by table lookup is 0.72; when the target relative humidity Rhs is 40% and the target indoor temperature Ts is 27 ℃, obtaining a corresponding set PMV value of 0.41 through table lookup; when the target relative humidity Rhs is 50% and the target indoor temperature Ts is 25.5 ℃, the corresponding set PMV value is found to be-0.01 by table lookup.

A corresponding inverse operation is Ta ═ f (Rh, PMV), and thus can be converted to: as Ts is f (Rhs, PMV _ s), when the target relative humidity Rhs is known and the PMV value is set, the corresponding target indoor temperature Ts can be obtained. Of course, the corresponding target indoor temperature Ts may also be obtained by looking up a table, for example, as shown in table 2, which is an example of a mapping table for querying the target indoor temperature Ts according to the target relative humidity Rhs when the PMV value is set to 0.0 in an embodiment of the present invention.

Table 2 mapping table of correspondence relationship between target relative humidity and target indoor temperature when PMV value is 0.0

Target relative humidity Rhs (%)	Target indoor temperature Ts (. degree. C.)
		35％	26
40％	26
		45％	26
50％	25.5
		55％	25.5
60％	25
		65％	25

Alternatively, another corresponding inverse operation is Rh ═ f (Ta, PMV), and thus can be converted to: when the target indoor temperature Ts is known and the PMV value is set, the corresponding target relative humidity Rhs can be solved because Rhs is f (Ts, PMV). Of course, the corresponding target relative humidity Rhs may also be obtained by looking up a table, for example, as shown in table 3, which is an example of a mapping table for querying the target relative humidity Rhs according to the target indoor temperature Ts when the PMV value is 0.0 in an embodiment of the present invention.

Table 3 mapping table of correspondence relationship between target indoor temperature and target relative humidity when PMV value is 0.0

Still alternatively, an operation is PMV ═ f (Ta, Rh), and thus, can be converted to: as shown in table 4, for example, in an embodiment of the present invention, when the target indoor temperature Ts is 26 ℃, an example of a mapping table for setting the PMV value is queried according to the target relative humidity Rhs.

Table 4 mapping table of correspondence between target relative humidity and set PMV value at 26 Ts ═ c

Relative humidity Rh (%)	Setting the PMV value
		35％	0.00
40％	0.02
		45％	0.04
50％	0.06
		55％	0.15
60％	0.19
		65％	0.23

As can be seen from the correspondence table, the set PMV value and the first target environmental parameter are known, and the second target environmental parameter can be obtained by performing calculation according to a look-up table or a function, for example, the set PMV value is 0.0 and the target relative humidity Rhs is 65%, and the target indoor temperature Ts is determined to be 25 ℃ by looking up table 2; for another example, the PMV value is 0.0 and the target relative humidity Rhs is 55%, and the target indoor temperature Ts is 25.5 ℃ as determined by referring to table 2.

In winter, when the air conditioner is heating, as shown in table 5, it is an example of the mapping table of the second predetermined PMV value-target indoor temperature-target relative humidity correspondence according to an embodiment of the present invention. Wherein, the human body metabolic rate M and the clothing thermal resistance clo are respectively 1.2 and 1.0.

TABLE 5 mapping table of the second pre-set PMV value-target indoor temperature-target relative humidity correspondence

Wherein, the first behavior target relative humidity Rhs in table 5, the leftmost column is the target indoor temperature Ts, the value in table 5 is the set PMV, and when the target relative humidity Rhs is 40% and the target indoor temperature Ts is 26 ℃, the corresponding set PMV value obtained by table lookup is 0.80; when the target relative humidity Rhs is 50% and the target indoor temperature Ts is 22 ℃, obtaining a corresponding set PMV value of-0.07 through table lookup; when the target relative humidity Rhs was 70% and the target indoor temperature Ts was 19 ℃, the corresponding set PMV value was found to be-0.67 by table lookup.

A corresponding inverse operation is Ta ═ f (Rh, PMV), and thus can be converted to: as Ts is f (Rhs, PMV _ s), when the target relative humidity Rhs is known and the PMV value is set, the corresponding target indoor temperature Ts can be obtained. Of course, the corresponding target indoor temperature Ts may also be obtained by looking up a table, for example, as shown in table 6, which is an example of a mapping table for querying the target indoor temperature Ts according to the target relative humidity Rhs when the PMV value is set to 0.0 in an embodiment of the present invention.

Table 6 mapping table of correspondence relationship between target relative humidity and target indoor temperature when PMV value is 0.0

Target relative humidity Rhs (%)	Target indoor temperature Ts (. degree. C.)
		35％	23
40％	23
		45％	22.5
50％	22.5
		55％	22.5
60％	22
		65％	22

As can be seen from the above correspondence table, the set PMV value and the first target environmental parameter are known, and the second target environmental parameter can be obtained by calculation from a look-up table or a function, for example, the set PMV value is 0.0 and the target relative humidity Rhs is 40%, and the target indoor temperature Ts is determined to be 23 ℃ by the look-up table 6.

In other embodiments of the present invention, taking air conditioner cooling as an example, as shown in table 7, a mapping table of the correspondence between the target relative humidity and the target indoor temperature under the set PMV value according to an embodiment of the present invention is provided.

Table 7 mapping table of correspondence between target relative humidity and target indoor temperature

It is understood that the relative humidity range for human comfort is generally 35% -65%, therefore, the air conditioner generally controls the relative humidity to be 35% -65%, the first data is 35%, the last data is 65%, the target relative humidity Rhs is increased by a%, for example, where a may be 1,2, 5, 10, etc., and is determined by the accuracy of the humidity sensor, the amount of the calculated data, etc. The accuracy of the target indoor temperature is, for example, B.degree.C., e.g., 0.1 degree.C, 0.2 degree.C, 0.5 degree.C, 1 degree.C, and is determined by the accuracy of the temperature sensor, the amount of calculation data, and the like. The input set PMV value, e.g., 0.2, automatically generates data as in table 7, one set of which is set relative humidity Rhs and target indoor temperature Ts. In Table 7, n is 1,2, …, and m is 0,1,2 …. Due to the problem of the value precision of B, a plurality of target relative humidity values may actually correspond to 1 target indoor temperature value together.

For example, the PMV value is set to 0.3, and when the precision of B is 0.5 ℃, a is increased by 5%, and the relative humidity Rh is 50%, the corresponding indoor temperature Ta is 26.8 ℃; when the relative humidity Rh is 55%, the corresponding indoor temperature Ta is 27 ℃; when the relative humidity Rh is 60%, the corresponding indoor temperature Ta is 27.2 ℃, and since the accuracy of the temperature sensor is 0.5 ℃, the target indoor temperature actually displayed is 27 ℃ after taking an integral multiple of 0.5.

TABLE 8

PMV value of 0.3

Target relative humidity (%)	Target indoor temperature (. degree.C.)
		35％	27
40％	26.5
		45％	26.5
50％	26.5
		55％	26.5
60％	26
		65％	26

Specifically, when the PMV value is set to 0.0, it is generally considered that the heat sensation requirement is moderate, but some users may feel that the set PMV value is 0 due to individual differences, and the current heat sensation is slightly cool, in this case, it is necessary to increase the set PMV value, that is, to adjust the set PMV value from 0.0 to about 0.3, analyze the data shown in table 8 according to the set PMV value of 0.3, determine the target relative humidity Rhs according to the detected relative humidity Rh and the set PMV value, obtain the target indoor temperature Ts by referring to table 8, for example, the set PMV value of 0.3, determine the target relative humidity Rhs of 40%, and obtain the target indoor temperature Ts of 26.5 ℃ by referring to table.

In some embodiments, the control method of the air conditioner further includes: when the air conditioner is used for refrigerating, determining a new first target environmental parameter and a new second target environmental parameter by taking preset time as a period, so that the air conditioner operates according to the new first target environmental parameter and the new second target environmental parameter; when the air conditioner heats, the humidifier of the air conditioner is controlled to operate or stop, so that the air conditioner always operates according to the first target environmental parameter and the second target environmental parameter.

It can be understood that, when the air conditioner performs cooling or dehumidification, the indoor temperature Ta and the relative humidity Rh will change continuously with the operation of the air conditioner, so that, with a preset time as a period, for example, every 5 minutes, the set PMV value and the relative humidity Rh are obtained again, the target relative humidity Rhs and the target indoor temperature Ts are determined again according to the relative humidity Rh and the set PMV value, and when the indoor temperature Ta and the relative humidity Rh change, a new target relative humidity Rhs and a new target indoor temperature Ts are determined periodically and dynamically, that is, the optimal target relative humidity Rhs and the target indoor temperature Ts are determined periodically and dynamically, and it is ensured that the air conditioner can operate with the set PMV value, thereby, the requirement of a user on comfort is met, and simultaneously, the energy consumption is saved to the maximum extent.

When the air conditioner heats, the humidifier needs to be synchronously started to control the relative humidity Rh, so that the indoor temperature Ta and the relative humidity Rh also change along with the operation of the air conditioner, therefore, the relative humidity Rh needs to be detected, if the relative humidity Rh exceeds the target relative humidity Rhs, the humidifier is controlled to adjust the humidification gear, for example, the humidification gear is adjusted from a high humidification gear to a low humidification gear, or the humidifier is directly controlled to stop, thereby saving the energy consumption of the air conditioner, ensuring that the air conditioner can always operate at the target relative humidity Rhs and the target indoor temperature Ts, for example, the air conditioner can always operate at Rhs-40% and Ts-23 ℃, further ensuring that the air conditioner can operate at the set PMV value, thereby meeting the requirement of a user on comfort, and simultaneously saving the energy consumption to the maximum extent.

In some embodiments, the environmental parameter is relative humidity, the corresponding first target environmental parameter is target relative humidity, and the corresponding second target environmental parameter is target indoor temperature; or the environmental parameter is indoor temperature, the corresponding first target environmental parameter is target indoor temperature, and the corresponding second target environmental parameter is target relative humidity. It can be understood that the first target environment parameter and the second target environment parameter are determined by determining the current environment parameter, and the air conditioner is controlled to operate according to the first target environment parameter and the second target environment parameter, so that the indoor comfort level can be accurately adjusted, the comfort level feeling of a user is improved, and the requirement of a human body on the comfort level is met.

A control device of an air conditioner according to an embodiment of the second aspect of the present invention will be described with reference to fig. 4.

Fig. 4 is a block diagram of a control apparatus of an air conditioner according to an embodiment of the present invention. As shown in fig. 4, the control device 2 of the air conditioner according to the embodiment of the present invention includes an acquisition module 20, a first determination module 21, a second determination module 22, and a control module 23.

The acquiring module 20 is configured to acquire a set PMV of the air conditioner and a current environmental parameter, where the environmental parameter includes an indoor temperature or a relative humidity; the first determining module 21 is configured to determine a first target environmental parameter according to the set PMV and the current environmental parameter; the second determining module 22 is configured to determine a second target environment parameter according to the set PMV and the first target environment parameter; the control module 23 is configured to control the air conditioner to operate according to the first target environmental parameter and the second target environmental parameter.

According to the control device 2 of the air conditioner, the set PMV value and the current environmental parameter, such as the indoor temperature Ta or the relative humidity Rh, are obtained, the first target environmental parameter is determined, the second target environmental parameter is determined according to the set PMV value and the first target environmental parameter, and the first target environmental parameter and the second target environmental parameter are used as the control parameters to control the operation of the air conditioner, so that the common control of the indoor temperature Ta and the relative humidity Rh is realized, the air conditioner can accurately adjust the indoor comfort level according to the set PMV value, the problem that the actual comfort level of a user is poor due to the fact that the relative humidity Rh is higher or lower when the indoor temperature Ta is proper is avoided being singly used as the control target, the comfort level of the indoor environment is improved, and the comfort experience of the user is improved.

In some embodiments, the first determining module 21 is specifically configured to obtain a plurality of target environment parameters corresponding to the set PMV value; and taking the one with the numerical value equal to or smaller than the current environmental parameter and closest to the numerical value of the current environmental parameter as the first target environmental parameter, or taking the one with the minimum numerical value in the multiple target environmental parameters as the first target environmental parameter when the air conditioner heats. It will be appreciated that the same PMV value may correspond to a plurality of different sets of air temperature Ta and relative humidity Rh, in other words, a plurality of different sets of air temperature Ta and relative humidity Rh, which may ultimately correspond to the same PMV value. For example, when the air conditioner operates in the cooling mode, the PMV value is set to 0.0, and the corresponding air temperature Ta and the relative humidity Rh may be 25 ℃ and 65%, respectively, or 25.5 ℃ and 55%, and 26 ℃ and 45%, respectively. For example, when the air conditioner is operated in the heating mode, the PMV value is set to 0.0, and the corresponding air temperature Ta and the relative humidity Rh may be 23 ℃ and 30%, respectively, or 22.5 ℃ and 45%, and 22 ℃ and 60%, respectively. Thus, after determining the set PMV value, a plurality of target environmental parameters, such as a plurality of target relative humidities Rhs or a plurality of target indoor temperatures Ts, corresponding to the set PMV value may be obtained. Further, a first target parameter that is ultimately required, i.e., a target relative humidity Rhs or a target indoor temperature Ts, may be determined from the set PMV value corresponding to the plurality of target environmental parameters.

In some embodiments, the second determining module 22 is specifically configured to input the set PMV value and the first target environmental parameter into a preset functional relation of the PMV value, the first target environmental parameter, and the second target environmental parameter, so as to obtain the second target environmental parameter.

In some embodiments, the second determining module 22 is specifically configured to obtain the second target environment parameter by querying a preset mapping table of correspondence between a PMV value, a first target environment parameter, and a second target environment parameter, where the mapping table of correspondence between a PMV value, a first target environment parameter, and a second target environment parameter includes multiple sets of correspondence between a PMV value, a first target environment parameter, and a second target environment parameter. It can be understood that, the corresponding relationship among the PMV value, the first target environment parameter and the second target environment parameter is set, any two parameters are determined, and the other parameter can be obtained by looking up the table. Of course, in the specific embodiment, when two parameters are determined, another parameter may be obtained by performing an operation as a function of PMV ═ f (Ta, Rh). The preset mapping table of correspondence between the PMV value, the first target environmental parameter, and the second target environmental parameter is obtained by, for example, calibration according to a large amount of test data, for example, according to a function decoupling of PMV ═ f (Ta, Rh), a large amount of data of correspondence between the PMV value, the first target environmental parameter, and the second target environmental parameter is obtained by calibration, and then the preset mapping table of correspondence between the PMV value, the first target environmental parameter, and the second target environmental parameter is obtained by calibration.

In some embodiments, the mapping table of the preset PMV value-first target environment parameter-second target environment parameter correspondence relationship at least includes: the method comprises the following steps that a first preset PMV value-first target environment parameter-second target environment parameter corresponding relation mapping table and a second preset PMV value-first target environment parameter-second target environment parameter corresponding relation mapping table are obtained, wherein when the condition that summer is detected currently, the first preset PMV value-first target environment parameter-second target environment parameter corresponding relation mapping table is inquired to obtain a second target environment parameter; and when the current situation in winter is detected, inquiring a mapping table of the corresponding relation of a second preset PMV value, the first target environment parameter and the second target environment parameter to obtain a second target environment parameter.

In some embodiments, the control module 23 is further configured to determine a new first target environmental parameter and a new second target environmental parameter with a preset time as a period when the air conditioner is cooling, so that the air conditioner operates according to the new first target environmental parameter and the new second target environmental parameter; when the air conditioner heats, the humidifier of the air conditioner is controlled to operate or stop, so that the air conditioner always operates according to the first target environmental parameter and the second target environmental parameter.

It should be noted that a specific implementation manner of the control device 2 of the air conditioner according to the embodiment of the present invention is similar to a specific implementation manner of the control method of the air conditioner according to any of the above embodiments of the present invention, and please refer to the description of the method part specifically, and details are not described here for reducing redundancy.

According to the control device 2 of the air conditioner, the set PMV value and the current environmental parameter, such as the indoor temperature Ta or the relative humidity Rh, are obtained, the first target environmental parameter is determined, the second target environmental parameter is determined according to the set PMV value and the first target environmental parameter, and the first target environmental parameter and the second target environmental parameter are used as the control parameters to control the operation of the air conditioner, so that the common control of the indoor temperature Ta and the relative humidity Rh is realized, the air conditioner can accurately adjust the indoor comfort level according to the set PMV value, the problem that the actual comfort level of a user is poor due to the fact that the relative humidity Rh is higher or lower when the indoor temperature Ta is proper is avoided, the comfort level of the indoor environment is improved, and the comfort experience of the user is improved.

An air conditioner according to an embodiment of a third aspect of the present invention is described below, including: the control device 2 of the air conditioner of any of the above embodiments; or, a processor, a memory and a control program of the air conditioner stored on the memory and operable on the processor, wherein the control program of the air conditioner realizes the control method of the air conditioner according to any one of the above embodiments when executed by the processor.

In this embodiment, when the air conditioner performs temperature and humidity control, a specific implementation manner of the air conditioner is similar to a specific implementation manner of the control device 2 of the air conditioner according to any of the above embodiments of the present invention, and please refer to the description of the control device 2 of the air conditioner specifically, and in order to reduce redundancy, it is not described herein again.

A computer-readable storage medium according to a fourth embodiment of the present invention is described below, the computer-readable storage medium having stored thereon a control program of an air conditioner, the control program of the air conditioner, when executed by a processor, implementing a control method of the air conditioner according to any one of the embodiments described above.

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

1. A control method of an air conditioner is characterized by comprising the following steps:

acquiring a set PMV value and current environmental parameters of the air conditioner, wherein the environmental parameters comprise indoor temperature or relative humidity;

determining a first target environment parameter according to the set PMV value and the current environment parameter;

determining a second target environment parameter according to the set PMV value and the first target environment parameter;

and controlling the air conditioner to operate according to the first target environmental parameter and the second target environmental parameter.

2. The method of claim 1, wherein the determining a first target environmental parameter according to the set PMV value and the current environmental parameter comprises:

acquiring a plurality of target environment parameters corresponding to the set PMV value;

when the air conditioner is used for refrigerating, taking a value which is equal to the environmental parameter or smaller than the current environmental parameter and is closest to the value of the current environmental parameter in a plurality of target environmental parameters as the first target environmental parameter; or, when the air conditioner heats, the minimum value among the plurality of target environmental parameters is taken as the first target environmental parameter.

3. The method of claim 1 or 2, wherein the enthalpy difference value between the first target environmental parameter and the current environmental parameter is the smallest among a plurality of enthalpy difference values obtained by subtracting the enthalpy values corresponding to the target environmental parameters from the enthalpy value corresponding to the current environmental parameter.

4. The method of claim 1, wherein determining a second target environmental parameter based on the set PMV value and the first target environmental parameter comprises:

and inputting the set PMV value and the first target environment parameter into a preset functional relation of the PMV value, the first target environment parameter and the second target environment parameter to obtain the second target environment parameter.

5. The method of claim 1, wherein determining a second target environmental parameter based on the set PMV value and the first target environmental parameter comprises:

when the current situation in summer is detected, inquiring a mapping table of corresponding relations of a first preset PMV value, a first target environment parameter and a second target environment parameter to obtain the second target environment parameter;

and when the current situation in winter is detected, inquiring a mapping table of the corresponding relation of a second preset PMV value, the first target environment parameter and the second target environment parameter to obtain the second target environment parameter.

The first preset PMV value-first target environment parameter-second target environment parameter corresponding relation mapping table and the second preset PMV value-first target environment parameter-second target environment parameter corresponding relation mapping table respectively comprise multiple groups of corresponding relations among PMV values-first target environment parameters-second target environment parameters.

6. The control method of an air conditioner according to claim 1, further comprising:

when the air conditioner is used for refrigerating, determining a new first target environmental parameter and a new second target environmental parameter by taking preset time as a period, so that the air conditioner operates according to the new first target environmental parameter and the new second target environmental parameter;

and when the air conditioner heats, controlling the humidifier of the air conditioner to operate or stop so as to enable the air conditioner to operate according to the first target environment parameter and the second target environment parameter all the time.

7. The method as claimed in claim 6, wherein the environmental parameter is relative humidity, the corresponding first target environmental parameter is target relative humidity, and the corresponding second target environmental parameter is target indoor temperature; alternatively, the first and second electrodes may be,

the environmental parameter is indoor temperature, the corresponding first target environmental parameter is target indoor temperature, and the corresponding second target environmental parameter is target relative humidity.

8. A control apparatus of an air conditioner, comprising:

the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring a set PMV and current environmental parameters of the air conditioner, and the environmental parameters comprise indoor temperature or relative humidity;

the first determining module is used for determining a first target environment parameter according to the set PMV and the current environment parameter;

the second determining module is used for determining a second target environment parameter according to the set PMV and the first target environment parameter;

and the control module is used for controlling the air conditioner to operate according to the first target environmental parameter and the second target environmental parameter.

9. An air conditioner, comprising:

the control device of an air conditioner according to claim 8; or

A processor, a memory, and a control program of an air conditioner stored on the memory and executable on the processor, the control program of the air conditioner implementing the control method of the air conditioner as claimed in any one of claims 1 to 7 when executed by the processor.

10. A computer-readable storage medium, characterized in that a control program of an air conditioner is stored thereon, and when executed by a processor, implements the control method of the air conditioner according to any one of claims 1 to 7.