阅读说明：本技术 一种空调新风量控制方法、装置及空调 (Air conditioner fresh air volume control method and device and air conditioner ) 是由 徐耿彬 廖敏 连彩云 熊绍森 黎优霞 王烨 于 2021-07-22 设计创作，主要内容包括：本发明公开一种空调新风量控制方法、装置及空调。其中,该方法包括：监测指定参数,其中,所述指定参数包括：气候信息、室内环境温度和空调运行信息；根据所述指定参数确定空调作用区域内的人数；根据所述人数确定目标新风量,并按照所述目标新风量输出新风。本发明依靠空调自带的部件监测指定参数,根据指定参数推算区域内的人数,进而基于人数确定所需的新风量,不需要增加额外的空气质量传感器或红外摄像头等监测设备,通过对空调运行环境和空调运行状态进行监测,在不增加成本的基础上实现了对新风量的准确控制,保证空调在开启新风时兼顾舒适性和节能。(The invention discloses an air conditioner fresh air volume control method and device and an air conditioner. Wherein, the method comprises the following steps: monitoring specified parameters, wherein the specified parameters comprise: climate information, indoor ambient temperature, and air conditioner operation information; determining the number of people in the air conditioning action area according to the designated parameters; and determining a target fresh air volume according to the number of people, and outputting fresh air according to the target fresh air volume. According to the invention, the designated parameters are monitored by means of the components of the air conditioner, the number of people in the area is calculated according to the designated parameters, the required fresh air volume is further determined based on the number of people, no additional monitoring equipment such as an air quality sensor or an infrared camera is needed to be added, the air conditioner operation environment and the air conditioner operation state are monitored, the fresh air volume is accurately controlled on the basis of not increasing the cost, and the comfort and energy conservation of the air conditioner are ensured when the fresh air is started.)

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

monitoring specified parameters, wherein the specified parameters comprise: climate information, indoor ambient temperature, and air conditioner operation information;

determining the number of people in the air conditioning action area according to the designated parameters;

and determining a target fresh air volume according to the number of people, and outputting fresh air according to the target fresh air volume.

2. The method of claim 1, wherein the climate information comprises at least: outdoor ambient temperature, the air conditioner operation information includes: the inner pipe temperature and the inner fan rotating speed;

determining the number of people in the air conditioning action area according to the specified parameters, comprising the following steps:

determining the output capacity of the air conditioner according to the indoor environment temperature, the inner pipe temperature and the rotating speed of the inner fan;

determining the heat capacity of the air conditioning action area according to the climate information, the indoor environment temperature, the inner pipe temperature and the rotating speed of the inner fan;

and determining the number of people according to the output capacity of the air conditioner, the heat capacity of the air conditioning action area and the outdoor environment temperature.

3. The method of claim 2, wherein determining the output capacity of the air conditioner based on the indoor ambient temperature, the inner duct temperature, and the inner fan speed comprises:

calculating the absolute value of the difference value between the indoor environment temperature and the inner tube temperature, and recording the absolute value as a first value;

and calculating the product of the first value, the rotating speed of the internal fan and a preset coefficient to obtain the output capacity of the air conditioner.

4. The method of claim 2, wherein determining a heat capacity of the conditioned zone based on the climate information, the indoor ambient temperature, the inner duct temperature, and the inner fan speed comprises:

inputting the climate information, the inner tube temperature and the rotating speed of the inner fan into a preset model to obtain the output of the preset model, wherein the output comprises: the predicted value of the indoor environment temperature change speed and the heat capacity reference value of the air conditioning action area;

acquiring an actual value of the indoor environment temperature change speed;

and correcting the heat capacity reference value according to the predicted value and the actual value of the indoor environment temperature change speed to obtain the corrected heat capacity.

5. The method according to claim 4, wherein the correcting the heat capacity reference value according to the predicted value and the actual value of the indoor environment temperature change speed comprises:

comparing the predicted value and the actual value of the indoor environment temperature change speed;

if the predicted value is greater than the actual value, increasing the heat capacity reference value;

if the predicted value is less than the actual value, the heat capacity reference value is decreased.

6. The method according to claim 4, further comprising, after correcting the heat capacity reference value based on the predicted value and the actual value of the indoor ambient temperature change speed:

and taking the value of the designated parameter, the actual value of the indoor environment temperature change speed and the corrected heat capacity under the current working condition as training data, and carrying out self-learning on the preset model.

7. The method of claim 2, wherein determining the number of people based on the output capacity of the air conditioner, the heat capacity of the active area of the air conditioner, and the outdoor ambient temperature comprises:

calculating the product of the heat capacity of the air conditioning action area and the current outdoor environment temperature to obtain the heat load of the air conditioning action area at the current outdoor environment temperature;

calculating the difference value between the output capacity of the air conditioner and the heat load, and recording as a second value;

and calculating the ratio of the second value to the average heat load of the human body to obtain the number of people.

8. The method according to any one of claims 1 to 7, wherein determining a target fresh air volume from the number of people comprises:

and calculating the product of the fresh air volume required by each person and the number of people to obtain the target fresh air volume.

9. The method of any one of claims 1 to 7, further comprising, prior to monitoring the specified parameter:

judging whether the indoor environment temperature reaches a set temperature or not under the condition of starting the fresh air volume automatic control function;

if the indoor environment temperature does not reach the set temperature, controlling the air conditioner to operate according to the lowest fresh air volume;

and if the indoor environment temperature reaches the set temperature, triggering and monitoring the specified parameters.

10. An air conditioner fresh air volume control device, characterized by comprising:

the monitoring module is used for monitoring specified parameters, wherein the specified parameters comprise: climate information, indoor ambient temperature, and air conditioner operation information;

the determining module is used for determining the number of people in the air conditioning action area according to the specified parameters;

and the control module is used for determining a target fresh air volume according to the number of people and outputting fresh air according to the target fresh air volume.

11. An air conditioner, comprising: an air conditioning fresh air volume control device according to claim 10.

12. An electronic device, comprising: a memory, a processor and a computer program stored on the memory and operable on the processor, wherein the processor implements the air conditioning fresh air volume control method of any one of claims 1 to 9 when executing the computer program.

13. A non-transitory computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the air-conditioning fresh air volume control method according to any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of fresh air, in particular to a method and a device for controlling the fresh air volume of an air conditioner and the air conditioner.

Background

Along with the health consciousness of people and the gradual increase of the attention to fresh air, the attention to the health air conditioner with the fresh air function is also greatly increased. When fresh air is introduced, the fresh air volume of the air conditioner needs to be accurately controlled, and the fresh air volume is too small, so that toxic and harmful gas in a room cannot be effectively diluted and discharged to the outside, and the fresh air effect is poor; and if the fresh air volume is too large, the fluctuation change frequency of the indoor temperature and humidity is increased, the load output of the air conditioner is increased, and the comfort is influenced.

In recent years, the method for determining the fresh air volume by each large manufacturer mainly relies on a high-sensitivity and high-precision sensor to monitor the indoor air quality in real time, and then a control system regulates and controls the fresh air volume according to corresponding control logic. Although the method can properly control the fresh air volume, the additional sensor can increase the cost of the air conditioner, and in addition, if the sensor is in abnormal conditions such as accuracy reduction or damage, the use of the fresh air function is greatly influenced.

Aiming at the problems that the fresh air volume control function depends on a high-precision air quality sensor in the prior art, the cost of a fresh air conditioner is high, and the reliability is easily affected, an effective solution is not provided at present.

Disclosure of Invention

The embodiment of the invention provides a fresh air volume control method and device of an air conditioner and the air conditioner, and at least solves the problems that in the prior art, the fresh air volume control function depends on a high-precision air quality sensor, so that the cost of the fresh air conditioner is high and the reliability of the fresh air conditioner is easily influenced.

In order to solve the technical problem, an embodiment of the present invention provides an air conditioner fresh air volume control method, including:

monitoring specified parameters, wherein the specified parameters comprise: climate information, indoor ambient temperature, and air conditioner operation information;

determining the number of people in the air conditioning action area according to the designated parameters;

and determining a target fresh air volume according to the number of people, and outputting fresh air according to the target fresh air volume.

Optionally, the climate information at least includes: outdoor ambient temperature, the air conditioner operation information includes: the inner pipe temperature and the inner fan rotating speed;

determining the number of people in the air conditioning action area according to the specified parameters, comprising the following steps:

determining the output capacity of the air conditioner according to the indoor environment temperature, the inner pipe temperature and the rotating speed of the inner fan;

determining the heat capacity of the air conditioning action area according to the climate information, the indoor environment temperature, the inner pipe temperature and the rotating speed of the inner fan;

and determining the number of people according to the output capacity of the air conditioner, the heat capacity of the air conditioning action area and the outdoor environment temperature.

Optionally, determining the output capacity of the air conditioner according to the indoor environment temperature, the inner pipe temperature and the rotation speed of the inner fan, includes:

calculating the absolute value of the difference value between the indoor environment temperature and the inner tube temperature, and recording the absolute value as a first value;

and calculating the product of the first value, the rotating speed of the internal fan and a preset coefficient to obtain the output capacity of the air conditioner.

Optionally, determining the heat capacity of the air conditioning action area according to the climate information, the indoor environment temperature, the inner pipe temperature and the rotation speed of the inner fan, including:

inputting the climate information, the inner tube temperature and the rotating speed of the inner fan into a preset model to obtain the output of the preset model, wherein the output comprises: the predicted value of the indoor environment temperature change speed and the heat capacity reference value of the air conditioning action area;

acquiring an actual value of the indoor environment temperature change speed;

and correcting the heat capacity reference value according to the predicted value and the actual value of the indoor environment temperature change speed to obtain the corrected heat capacity.

Optionally, the correcting the heat capacity reference value according to the predicted value and the actual value of the indoor environment temperature change speed includes:

comparing the predicted value and the actual value of the indoor environment temperature change speed;

if the predicted value is greater than the actual value, increasing the heat capacity reference value;

if the predicted value is less than the actual value, the heat capacity reference value is decreased.

Optionally, after correcting the heat capacity reference value according to the predicted value and the actual value of the indoor environment temperature change speed, the method further includes:

and taking the value of the designated parameter, the actual value of the indoor environment temperature change speed and the corrected heat capacity under the current working condition as training data, and carrying out self-learning on the preset model.

Optionally, determining the number of people according to the output capacity of the air conditioner, the heat capacity of the air conditioning active area and the outdoor environment temperature includes:

calculating the product of the heat capacity of the air conditioning action area and the current outdoor environment temperature to obtain the heat load of the air conditioning action area at the current outdoor environment temperature;

calculating the difference value between the output capacity of the air conditioner and the heat load, and recording as a second value;

and calculating the ratio of the second value to the average heat load of the human body to obtain the number of people.

Optionally, determining the target fresh air volume according to the number of people includes:

and calculating the product of the fresh air volume required by each person and the number of people to obtain the target fresh air volume.

Optionally, before monitoring the specified parameter, the method further includes:

judging whether the indoor environment temperature reaches a set temperature or not under the condition of starting the fresh air volume automatic control function;

if the indoor environment temperature does not reach the set temperature, controlling the air conditioner to operate according to the lowest fresh air volume;

and if the indoor environment temperature reaches the set temperature, triggering and monitoring the specified parameters.

The embodiment of the invention also provides an air conditioner fresh air volume control device, which comprises:

the monitoring module is used for monitoring specified parameters, wherein the specified parameters comprise: climate information, indoor ambient temperature, and air conditioner operation information;

the determining module is used for determining the number of people in the air conditioning action area according to the specified parameters;

and the control module is used for determining a target fresh air volume according to the number of people and outputting fresh air according to the target fresh air volume.

An embodiment of the present invention further provides an air conditioner, including: the embodiment of the invention provides a fresh air volume control device of an air conditioner.

An embodiment of the present invention further provides an electronic device, including: the air conditioner fresh air volume control method comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein when the processor executes the computer program, the air conditioner fresh air volume control method is realized.

The embodiment of the invention also provides a nonvolatile computer readable storage medium, wherein a computer program is stored on the nonvolatile computer readable storage medium, and when the computer program is executed by a processor, the computer program realizes the air conditioner fresh air volume control method in the embodiment of the invention.

By applying the technical scheme of the invention, the specified parameters are monitored by means of the components of the air conditioner, the number of people in the area is calculated according to the specified parameters, the required fresh air volume is further determined based on the number of people, monitoring equipment such as an additional air quality sensor or an infrared camera is not required to be added, the fresh air volume is accurately controlled by monitoring the operation environment of the air conditioner and the operation state of the air conditioner on the basis of not increasing the cost, and the comfort and energy conservation of the air conditioner are ensured when the fresh air is started.

Drawings

Fig. 1 is a flowchart of a fresh air volume control method of an air conditioner according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a fresh air volume control system of an air conditioner according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of control logic provided by an embodiment of the present invention;

FIG. 4 is a schematic diagram of the learning of a room heat capacity network model provided by an embodiment of the present invention;

fig. 5 is a block diagram of a fresh air volume control device of an air conditioner according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than presented herein.

Aiming at the problems that the fresh air control function depends on a high-precision air quality sensor in the prior art, so that the cost of a fresh air conditioner is high and the reliability of the fresh air conditioner is easily affected, the embodiment of the invention provides an air conditioner fresh air control method, and fig. 1 is a flow chart of the air conditioner fresh air control method provided by the embodiment of the invention, and as shown in fig. 1, the method comprises the following steps:

s101, monitoring specified parameters, wherein the specified parameters comprise: climate information, indoor ambient temperature, and air conditioning operation information.

And S102, determining the number of people in the air conditioning action area according to the designated parameters.

And S103, determining a target fresh air volume according to the number of people, and outputting fresh air according to the target fresh air volume.

Wherein, the above-mentioned climate information refers to the climate of the place where the air conditioner is located, and the climate information at least includes the outdoor ambient temperature, and the climate information may also include: outdoor sunshine conditions, precipitation, wind power, and the like. The climate information can be acquired by connecting the network communication module with the air conditioner, the outdoor environment temperature in the climate information can be directly monitored by the temperature sensing bulb or the temperature sensor of the air conditioner, the indoor environment temperature and the air conditioner operation information can be directly monitored based on the temperature sensing bulb or the sensor of the air conditioner, that is, the embodiment does not need to add additional components for monitoring the specified parameters. The air conditioner operation information includes: the inner pipe temperature and the inner fan rotating speed. The inner tube temperature refers to the temperature of the coil of the indoor unit. The air-conditioning active region is a region in which the temperature of the air-conditioned outlet air can be adjusted, for example, a room in which an indoor unit of an air conditioner is located. The fresh air is output according to the target fresh air quantity, and the method can be realized by controlling the rotating speed of a fresh air fan and the like.

According to the fresh air volume control method of the air conditioner, the designated parameters are monitored by means of the components of the air conditioner, the number of people in the area is calculated according to the designated parameters, the required fresh air volume is determined based on the number of people, monitoring equipment such as an additional air quality sensor or an infrared camera is not needed to be added, the air conditioner operation environment and the air conditioner operation state are monitored, the fresh air volume is accurately controlled on the basis of not increasing the cost, and the comfort and energy conservation of the air conditioner are guaranteed when the fresh air is started.

This embodiment need not additionally to set up infrared camera and detects the number, carry out relevant calculation through monitoring specified parameter, alright accurate determination district's interior number, carry out the accurate control of fresh air volume based on the number, avoid the increase of air conditioner cost, for example, to the great or more places of personnel flow of area (such as subway station, market, office space etc.), need set up a plurality of infrared cameras among the prior art and detect the number, and the number can be confirmed to the component (such as network communication module, temperature sensing package or sensor etc.) monitoring specified parameter that this embodiment relied on the air conditioner to take.

In an alternative embodiment, the step S102 of determining the number of people in the air-conditioning action area according to the designated parameter includes: determining the output capacity of the air conditioner according to the indoor environment temperature, the inner pipe temperature and the rotating speed of the inner fan; determining the heat capacity of an air conditioning action area according to climate information, indoor environment temperature, inner pipe temperature and inner fan rotating speed; the number of people is determined according to the output capacity of the air conditioner, the heat capacity of the air conditioning action area and the outdoor environment temperature.

The execution sequence of the two steps of determining the output capacity of the air conditioner and determining the heat capacity of the air conditioning action area can be changed, namely, the output capacity of the air conditioner can be determined firstly, the heat capacity of the air conditioning action area can be determined firstly, and the two steps can be executed simultaneously. The current running condition of the air conditioner can be embodied by the indoor environment temperature, the inner pipe temperature and the rotating speed of the inner fan, so that the real-time output capacity of the air conditioner can be determined according to the indoor environment temperature, the inner pipe temperature and the rotating speed of the inner fan. The heat capacity of the air-conditioning active region means the amount of heat absorbed (or released) by the temperature of the air-conditioning active region (i.e., the indoor ambient temperature) rising (or falling) by 1 c, regardless of the persons in the region.

According to the embodiment, the output capacity of the air conditioner is determined according to the related parameters, the heat capacity of the air conditioning action area is determined according to the related parameters, the number of people in the area is determined according to the output capacity of the air conditioner, the heat capacity of the air conditioning action area and the outdoor environment temperature, the number of people in the area can be calculated reliably, and therefore accurate control of fresh air volume based on the number of people is guaranteed.

In an alternative embodiment, determining the output capacity of the air conditioner according to the indoor ambient temperature, the inner duct temperature and the inner fan rotation speed comprises: calculating the absolute value of the difference value between the indoor environment temperature and the inner pipe temperature, and recording the absolute value as a first value; and calculating the product of the first value, the rotating speed of the internal fan and a preset coefficient to obtain the output capacity of the air conditioner. The preset coefficients are preset according to the type of the air conditioner, the value range of the preset coefficients can be 0.15-0.4, and the preset coefficients of different types are different. The method and the device can accurately and reliably estimate the real-time output capacity of the air conditioner.

In an alternative embodiment, determining the heat capacity of the air conditioning active region according to the climate information, the indoor ambient temperature, the inner duct temperature and the inner fan rotating speed comprises: inputting climate information, inner pipe temperature and inner fan rotating speed into a preset model to obtain output of the preset model, wherein the output comprises: the predicted value of the indoor environment temperature change speed and the heat capacity reference value of the air conditioning action area; acquiring an actual value of the indoor environment temperature change speed; and correcting the heat capacity reference value according to the predicted value and the actual value of the indoor environment temperature change speed to obtain the corrected heat capacity.

The preset model can be a neural network model, specifically, an initial network model can be established in a laboratory environment, and the input of the initial network model is set as follows: weather information, inner tube temperature and inner fan rotating speed, the output is: indoor ambient temperature change rate and heat capacity. And acquiring a large amount of sample data as training data, training the initial network model to determine calculation parameters used by the model in the calculation process, and obtaining a preset model.

The actual value of the indoor environment temperature change speed can be calculated through the monitored indoor environment temperature. In the actual operation process of the air conditioner, the numerical values of the relevant parameters under the current working condition are input into the preset model, and the predicted value of the indoor environment temperature change speed and the heat capacity reference value can be obtained. Considering that the preset model is a theoretical model obtained in a laboratory environment and is not completely the same as the actual operating environment of the air conditioner, the reference value of the heat capacity is corrected according to the predicted value and the actual value of the temperature change speed of the indoor environment, so that the final heat capacity is close to the actual installation and use environment of the air conditioner as much as possible.

According to the embodiment, the predicted value of the indoor environment temperature change speed and the heat capacity reference value of the air conditioner action area are obtained by using the preset model, and the heat capacity reference value is corrected according to the predicted value and the actual value of the indoor environment temperature change speed, so that the final heat capacity is close to the actual installation and use environment of the air conditioner as much as possible, and the accuracy of fresh air volume control is ensured.

Further, according to the predicted value and the actual value of the indoor environment temperature change speed, the heat capacity reference value is corrected, and the method comprises the following steps: comparing the predicted value and the actual value of the indoor environment temperature change speed; if the predicted value is larger than the actual value, increasing the heat capacity reference value; if the predicted value is smaller than the actual value, the heat capacity reference value is decreased. If the predicted value is equal to the actual value, the reference value of the heat capacity is set as the heat capacity to be finally used without correction.

The increase and decrease range of the heat capacity reference value may be preset according to experiments. If the predicted value is larger than the actual value, the actual indoor environment temperature changes slowly, the actual heat capacity should be larger than the heat capacity reference value, and therefore the heat capacity reference value is increased. If the predicted value is smaller than the actual value, it indicates that the actual indoor ambient temperature changes faster, and the actual heat capacity should be smaller than the heat capacity reference value, so the heat capacity reference value is reduced. For example, the reference value of the heat capacity output by the preset model is 1000, the predicted value of the indoor environment temperature change speed output by the preset model is 1 ℃/min, but the actual value of the detected indoor environment temperature change speed is 0.8 ℃/min, which indicates that the heat capacity of the room of the user is greater than 1000, so 1000 needs to be adjusted to be a little larger.

According to the embodiment, the predicted value and the actual value of the indoor environment temperature change speed are compared, the heat capacity reference value can be effectively and reliably corrected, and the heat capacity which is more in line with the actual situation of a user is obtained.

After the reference value of the heat capacity is corrected according to the predicted value and the actual value of the indoor environment temperature change speed, the value of the designated parameter under the current working condition, the actual value of the indoor environment temperature change speed and the corrected heat capacity can be used as training data to carry out self-learning on the preset model. Data generated in the actual operation process of the air conditioner are used as training data, self-learning training of the preset model is conducted, and calculation parameters in the preset model are continuously corrected in a self-adaptive mode, so that the preset model is closer to the actual use environment of the air conditioner, and the accuracy of the preset model is improved. Self-learning is carried out according to the actual running state of the air conditioner, and the calculation parameters in the preset model are continuously subjected to self-adaptive correction, so that the calculation result of the model is quicker and more accurate, and the accuracy of the fresh air volume control of the air conditioner under different installation environments and running environments is ensured.

In an alternative embodiment, the determining the number of people according to the output capacity of the air conditioner, the heat capacity of the air conditioning action area and the outdoor environment temperature comprises the following steps: calculating the product of the heat capacity of the air conditioning action area and the current outdoor environment temperature to obtain the heat load of the air conditioning action area at the current outdoor environment temperature (namely, the heat required by the air conditioning action area under the condition that personnel in the area are not considered at the current outdoor environment temperature); calculating the difference value between the output capacity of the air conditioner and the heat load, and recording as a second value; and calculating the ratio of the second value to the average heat load of the human body to obtain the number of people.

The "heat capacity of the air conditioning operation region" involved in the calculation of the heat load refers to the final heat capacity obtained after the correction. The higher the outdoor environment temperature is, the higher the difficulty of cooling the indoor space is, the lower the outdoor environment temperature is, the higher the difficulty of heating the indoor space is, and the larger the required energy is. The difference between the output capacity of the air conditioner and the heat load can reflect the energy required by all the personnel in the action area of the air conditioner. The average human thermal load can be determined empirically.

According to the embodiment, the number of people in the air-conditioning action area can be estimated accurately according to the designated parameters, and guarantee is provided for accurately controlling the fresh air volume.

In step S103, the target fresh air volume is determined according to the number of people, and specifically, the product of the fresh air volume required by each person and the number of people can be calculated to obtain the target fresh air volume. Wherein the fresh air volume required by each person is a preset value, for example, 15m³And s. Therefore, the required fresh air volume can be determined based on the number of people in the air conditioning action area, and the fresh air volume can be accurately controlled on the basis of not increasing the cost.

The user can automatically select whether to start the fresh air volume automatic control function, and after the air conditioner is started, the air conditioner is controlled to normally run according to the setting of the user under the condition that the fresh air volume automatic control function is not started; judging whether the indoor environment temperature reaches a set temperature or not under the condition of starting the fresh air volume automatic control function; if the indoor environment temperature does not reach the set temperature, controlling the air conditioner to operate according to the lowest fresh air volume; if the indoor environment temperature reaches the set temperature, the fresh air volume automatic control process can be started, the specified parameters are triggered and monitored, and the fresh air volume is automatically adjusted and controlled based on the specified parameters. The indoor environment temperature reaching the set temperature means that the indoor environment temperature is stable at the set temperature, that is, the indoor environment temperature is maintained near the set temperature within a preset time period and the fluctuation range is within an allowable range. If the indoor environment temperature does not reach the set temperature, the heating/refrigerating capacity of the air conditioner needs to be preferentially ensured at the moment, the air conditioner is operated with the lowest fresh air volume, the phenomenon that the comfort is influenced because the indoor environment temperature cannot quickly and accurately reach the set temperature due to overlarge fresh air volume is avoided, and the heating/refrigerating comfort can be ensured. If the indoor environment temperature reaches the set temperature, the automatic fresh air volume control process can be started, the automatic fresh air volume control process can be accurately and automatically controlled, and the comfort and energy conservation of the air conditioner are guaranteed when the fresh air is started.

The air conditioner fresh air volume control method is described below with reference to a specific embodiment, however, it should be noted that the specific embodiment is only for better describing the present application and is not to be construed as an undue limitation to the present application. The same or corresponding terms as those of the above-described embodiments are explained, and the description of the present embodiment is omitted.

As shown in fig. 2, a schematic diagram of a fresh air volume control system of an air conditioner includes: the system comprises a network communication module 10, a thermal bulb module 20 and an inner fan module 30 for data acquisition, a control module 40 for processing data and sending control instructions, and a fresh air module 50 for receiving the control instructions to realize control.

The network communication module 10 is mainly used for connecting a network, acquiring climate information of a location where the air conditioner is located, and sending the climate information to the control module 40.

The thermal bulb module 20 is a thermal bulb of the air conditioner, and is mainly used for collecting outdoor ambient temperature, indoor ambient temperature and inner tube temperature, and sending collected data to the control module 40. In this embodiment, the outdoor ambient temperature is monitored by the thermal bulb of the air conditioner, and for convenience of description, the climate information and the outdoor ambient temperature are used as two parameters without considering the concept that the climate information includes the outdoor ambient temperature.

The inner fan module 30 is mainly used to send the inner fan speed to the control module 40.

The control module 40 is mainly used for performing evaluation calculation according to the collected data to obtain the required fresh air volume and sending a control instruction. The control module 40 specifically includes: an output capacity evaluation model 41, a room heat capacity network model 42, and a fresh air volume calculation model 43.

The fresh air module 50 is used for controlling a fresh air system according to requirements to achieve required fresh air volume.

The output capacity evaluation model 41 is used for calculating and evaluating the real-time output capacity of the air conditioner, the output capacity of the air conditioner is related to the difference value between the indoor environment temperature and the inner pipe temperature and the rotating speed of the inner fan, and the calculation is as follows:

Q_t＝a×(t_i-t_n)×n，

wherein Q is_tRepresenting an air conditioner output capacity evaluation value; a represents a preset coefficient; t is t_iIndicating the indoor ambient temperature, t_nThe temperature of the inner pipe is shown, and n is the rotating speed of the inner fan.

The room heat capacity network model 42 includes a neural network model, which is mainly used to perform the heat capacity measurement of the roomAnd (6) evaluating. The inputs to the model are: climate information, outdoor ambient temperature, inner tube temperature and inner fan rotation speed, the output of the model is: indoor environment temperature change rate and room heat capacity Q_f. In the actual operation process, the room heat capacity network model 42 is continuously updated and learned by self through the collection and accumulation of actual operation data, so that the room heat capacity network model 42 is closer to the actual use environment of the air conditioner, and the calculated result is quicker and more accurate.

The fresh air volume calculation model 43 is used for calculating the number of people indoors at the moment according to the air conditioner output capacity evaluation value obtained by the output capacity evaluation model 41, the heat capacity obtained by the room heat capacity network model 42 and the real-time outdoor environment temperature, and then determining the fresh air volume according to the number of people, and the specific formula is as follows:

wherein Q is_xRepresenting the required fresh air volume; q represents the fresh air volume required by each person, and is generally 15m³/s；Q_f×t_wDenotes an ambient temperature t outside the room_wThe thermal load of the room; w represents the average thermal load of the human body and is determined from empirical values.

As shown in fig. 3, is a schematic diagram of a control logic, and includes the following steps:

s301, starting the air conditioner.

And S302, normally operating according to user settings.

And S303, judging whether the user starts the fresh air volume automatic control function, if so, entering S304, otherwise, returning to S302.

S304 determines whether the indoor ambient temperature is stable (i.e., whether the indoor ambient temperature reaches the set temperature), if so, the process proceeds to S305, and if not, the process proceeds to S308.

S305, detecting the current inner pipe temperature, the indoor environment temperature and the rotating speed of the inner fan, inputting the current inner pipe temperature, the current indoor environment temperature and the rotating speed of the inner fan into the output capacity evaluation model 41, and calculating to obtain an air conditioner output capacity evaluation value.

And S306, detecting the current outdoor environment temperature, and calculating the number of indoor people by combining the estimated air conditioner output capacity value and the room heat capacity.

S307, calculating the required fresh air volume according to the number of the indoor people, and entering S309.

In S308, the minimum fresh air volume is set as the required fresh air volume, and the process proceeds to S309.

And S309, controlling the fresh air fan to operate at the set fresh air volume. And then returning to S302 to circularly execute the flow of the fresh air volume automatic control so as to timely and reasonably change the fresh air volume according to the change of personnel in the room.

As shown in fig. 4, a schematic diagram of the learning of the room heat capacity network model includes the following steps:

s401, an initial network model is established in a laboratory, training is carried out on the initial network model by using training data, weather information, outdoor environment temperature, inner pipe temperature and inner fan rotating speed are input, indoor environment temperature change speed and heat capacity are output, and output values are related parameters in the laboratory environment and have certain universality. And after the training is finished, obtaining a room heat capacity network model.

S402, in actual operation, inputting parameters under actual operation conditions into the room heat capacity network model to obtain a predicted value of the indoor environment temperature change speed and room heat capacity.

And S403, comparing the predicted value of the indoor environment temperature change speed with the detected actual value of the indoor environment temperature change speed, correcting the heat capacity output by the model according to the comparison result, and reducing the heat capacity if the actual temperature change speed is high, otherwise, reducing the heat capacity.

S404, training the room heat capacity network model by taking the relevant parameters of the working condition, the actual indoor environment temperature change speed under the working condition and the corrected heat capacity as a group of new training data, thereby realizing the self-learning of the model and improving the accuracy of the model.

According to the air conditioner fresh air volume control method with the self-adaptive capacity, monitoring equipment such as an air quality sensor or an infrared camera does not need to be additionally added, the air conditioner running environment and the air conditioner running state are monitored by means of existing parts of the air conditioner, the number of indoor people is estimated according to preset calculation logic, the required fresh air volume is obtained according to the number of indoor people, accurate control over the fresh air volume is achieved on the basis that the cost is not increased, energy conservation and comfort are achieved, and the air conditioner is enabled to be comfortable and energy-saving when fresh air is started. And moreover, relevant calculation parameters can be continuously corrected in a self-adaptive manner according to the actual running state of the air conditioner, so that the model calculation result is more accurate, and the accuracy of fresh air volume control of the air conditioner in different installation environments and running environments is ensured.

Based on the same inventive concept, the embodiment of the invention also provides an air conditioner fresh air volume control device, which can be used for realizing the air conditioner fresh air volume control method in the embodiment. The fresh air volume control device of the air conditioner can be realized by software and/or hardware, and can be generally integrated in a controller of the air conditioner.

Fig. 5 is a block diagram of a fresh air volume control device of an air conditioner according to an embodiment of the present invention, and as shown in fig. 5, the device includes:

a monitoring module 51, configured to monitor specified parameters, where the specified parameters include: climate information, indoor ambient temperature, and air conditioner operation information;

the determining module 52 is used for determining the number of people in the air conditioning action area according to the specified parameters;

and the control module 53 is used for determining a target fresh air volume according to the number of people and outputting fresh air according to the target fresh air volume.

Optionally, the climate information at least includes: outdoor ambient temperature, the air conditioner operation information includes: the inner pipe temperature and the inner fan rotating speed. The determination module 52 includes:

the first determining unit is used for determining the output capacity of the air conditioner according to the indoor environment temperature, the inner pipe temperature and the rotating speed of the inner fan;

the second determining unit is used for determining the heat capacity of the air conditioning action area according to the climate information, the indoor environment temperature, the inner pipe temperature and the rotating speed of the inner fan;

and a third determining unit for determining the number of people according to the output capacity of the air conditioner, the heat capacity of the air conditioning action area and the outdoor environment temperature.

Optionally, the first determining unit includes:

the first calculating subunit is used for calculating an absolute value of a difference value between the indoor environment temperature and the inner pipe temperature, and recording the absolute value as a first value;

and the second calculating subunit is used for calculating the product of the first value, the rotating speed of the internal fan and a preset coefficient to obtain the output capacity of the air conditioner.

Optionally, the second determining unit includes:

the processing subunit is configured to input the climate information, the inner tube temperature, and the rotational speed of the inner fan to a preset model, and obtain an output of the preset model, where the output includes: the predicted value of the indoor environment temperature change speed and the heat capacity reference value of the air conditioning action area;

the acquisition subunit is used for acquiring an actual value of the indoor environment temperature change speed;

and the correction subunit is used for correcting the heat capacity reference value according to the predicted value and the actual value of the indoor environment temperature change speed so as to obtain the corrected heat capacity.

Optionally, the correction subunit is specifically configured to: comparing the predicted value and the actual value of the indoor environment temperature change speed; if the predicted value is greater than the actual value, increasing the heat capacity reference value; if the predicted value is less than the actual value, the heat capacity reference value is decreased.

Optionally, the fresh air volume control device of the air conditioner further includes: and the self-learning module is used for correcting the heat capacity reference value by the correction subunit according to the predicted value and the actual value of the indoor environment temperature change speed, and then taking the value of the specified parameter, the actual value of the indoor environment temperature change speed and the corrected heat capacity under the current working condition as training data to carry out self-learning on the preset model.

Optionally, the third determining unit includes:

the third calculation subunit is used for calculating the product of the heat capacity of the air conditioning action area and the current outdoor environment temperature to obtain the heat load of the air conditioning action area at the current outdoor environment temperature;

the fourth calculating subunit is used for calculating the difference value between the output capacity of the air conditioner and the heat load, and recording the difference value as a second value;

and the fifth calculating subunit is used for calculating the ratio of the second value to the average heat load of the human body to obtain the number of people.

Optionally, the control module 53 is specifically configured to: and calculating the product of the fresh air volume required by each person and the number of people to obtain the target fresh air volume.

Optionally, the fresh air volume control device of the air conditioner further includes:

the judging module is used for judging whether the indoor environment temperature reaches a set temperature or not under the condition of starting the fresh air volume automatic control function;

the control module 53 is further configured to control the air conditioner to operate according to the lowest fresh air volume if the indoor environment temperature does not reach the set temperature;

the monitoring module 51 is further configured to trigger monitoring of the specified parameter if the indoor environment temperature reaches the set temperature.

The air conditioner fresh air volume control device can execute the air conditioner fresh air volume control method provided by the embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method. For details of the air conditioner fresh air volume control method provided in the embodiment of the present invention, reference may be made to the technical details not described in detail in the embodiment.

An embodiment of the present invention further provides an air conditioner, including: the fresh air volume control device of the air conditioner in the embodiment.

An embodiment of the present invention further provides an electronic device, including: the air conditioner fresh air volume control method comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein when the processor executes the computer program, the air conditioner fresh air volume control method is realized.

The embodiment of the invention also provides a nonvolatile computer readable storage medium, on which a computer program is stored, and the computer program is executed by a processor to realize the fresh air volume control method of the air conditioner.

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.

Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.