Intelligent negative oxygen ion air conditioning and purification method and system

Abstract

The present application relates to air conditioner control technical field, specifically is intelligent negative oxygen ion air conditioning purification method and system, in the present application, through monitoring the natural stable trend of the internal refrigerant pressure and indoor air temperature after the air conditioner stops, first confirm a static stable environment suitable for executing the purification task, avoid the resource waste caused by starting the purification under the condition of the window opening and other airflow intense disturbance, then, through comparing the response sequence of different direction particulate matter sensors, accurately identify the initial diffusion direction of indoor pollutants, change the purification work from the past mode of covering the whole house to the directional response to specific direction, then, enhance the air supply intensity towards the pollution source direction, establish an efficient delivery channel for negative oxygen ions, and accurately synchronize the release process of negative oxygen ions with the start and stop time of enhanced air supply, use the strengthened airflow to actively deliver negative oxygen ions to the most seriously polluted area, realize the removal of suspended particulate matter.

Description

Technical Field

[0001] This invention relates to the field of air conditioning control technology, and in particular to an intelligent negative oxygen ion air conditioning and purification method and system. Background Technology

[0002] The field of air conditioning control technology involves adjusting various components of an air conditioning system to control environmental parameters such as indoor air temperature, humidity, cleanliness, wind speed, and airflow direction.

[0003] Among them, the intelligent negative oxygen ion air conditioning and purification method refers to the use of an air negative ion generator to release negative oxygen ions into the air during the operation of the air conditioning system. These ions combine with suspended particulate matter in the air, causing it to settle, thereby achieving a certain degree of air purification.

[0004] Existing technologies lack the ability to perceive and assess environmental conditions during operation. They typically release negative oxygen ions simultaneously when the air conditioner is turned on, without prior assessment of whether the indoor air is in a relatively stable state. This fixed operating mode, in situations with significant indoor-outdoor air exchange, such as when room doors and windows are not closed, can cause a large number of released negative oxygen ions to be carried away from the room by strong convective airflow before they can combine with particulate matter, resulting in low purification efficiency. Furthermore, this technology uses an indiscriminate purification method, uniformly releasing negative oxygen ions throughout the space without the ability to identify local pollution sources. For example, when only a corner of the room is dusted due to human activity, the purification process still relies on overall air circulation to slowly diffuse negative oxygen ions to the polluted area. Most negative oxygen ions are dissipated in the relatively clean air space before reaching the target area, resulting in poor targeting, slow purification response, and poor effectiveness in handling sudden and localized air pollution events. Summary of the Invention

[0005] To address the technical problems existing in the prior art, embodiments of the present invention provide an intelligent negative oxygen ion air conditioning and purification method, comprising the following steps: To achieve the above objectives, the present invention adopts the following technical solution: an intelligent negative oxygen ion air conditioning and purification method, comprising the following steps: S1: Collect the internal refrigerant pressure change sequence after the air conditioner condenser heat exchanger stops running, determine the pressure change trend over continuous time based on the pressure change sequence, and obtain pressure change information; S2: Collect the air temperature change sequence at the same time after the condenser heat exchanger stops running, determine the consistency between the air temperature change and the pressure change information, configure the start delay and duration of negative oxygen ion release, and generate release timing parameters; S3: Extract the time point at which the particulate matter sensor at each location in the room first detects that the particulate matter concentration exceeds the concentration threshold, and determine the direction of pollution propagation based on the installation location of the particulate matter sensor; S4: Adjust the air supply status of the air conditioner vents in the corresponding direction according to the pollution propagation direction, and release negative oxygen ions from the air conditioner according to the release timing parameters to generate a linkage control command; S5: Assign the execution order of the linkage control commands, adjust the synchronization behavior of air supply and release, and generate air conditioning and purification results.

[0006] As a further aspect of the present invention, the pressure change information includes the pressure change range, the continuous change time period, and the pressure change direction; the release timing parameters include the negative oxygen ion start-up time setting, the continuous release time setting, and the temperature-pressure response linkage conditions; the pollution propagation direction includes the first detection point of particulate matter exceeding the threshold, the room orientation corresponding to the detection point, and the initial diffusion direction of particulate matter; the linkage control command includes the air vent opening direction, the air supply control mode, and the negative oxygen ion release time configuration; and the air conditioning purification result includes the synchronous operation status of ventilation and release, the completion status of the adjustment behavior, and the configuration of the air conditioning operation process sequence.

[0007] As a further aspect of the present invention, the specific steps for obtaining the pressure change information are as follows: S101: Collect the pressure value and corresponding time information of the internal refrigerant at each pressure sampling point within a set time period after the air conditioner condenser heat exchanger stops running, and obtain the refrigerant pressure change sequence. S102: Extract the pressure and time values ​​corresponding to adjacent time points in the refrigerant pressure change sequence, perform intra-group calculations on the pressure change rate over all continuous time periods, and obtain the refrigerant pressure change rate sequence. S103: Identify the direction of change of the refrigerant pressure change rate sequence within a continuous time period, extract trend features under the condition that the rate value continuously decreases and the change amplitude is stable, and generate pressure change information.

[0008] As a further aspect of the present invention, the stability of the change amplitude is determined by comparing the interval of pressure change rate difference between adjacent time periods with a fluctuation amplitude threshold.

[0009] As a further aspect of the present invention, the specific steps for releasing the timing parameters are as follows: S201: Collect the air temperature change values ​​at multiple indoor locations within the same time period after the air conditioner condenser heat exchanger stops operating, aggregate the temperature data of each sampling location according to the corresponding time point, and use the maximum temperature difference between adjacent time points to represent the degree of temperature change within the time period, generating an air temperature change sequence. S202: Compare the air temperature change sequence with the change trend direction in the pressure change information, determine the duration of the difference in the continuous change trend direction within the set temperature and pressure change consistency threshold range, and obtain the temperature and pressure change analysis results; S203: Configure the start-up delay time and continuous release time of the negative oxygen ion release device according to the temperature and pressure change analysis results, and generate release timing parameters.

[0010] As a further aspect of the present invention, the specific steps for the direction of pollution propagation are as follows: S301: Collect particulate matter concentration change data from particulate matter sensors installed on each side of the room within a fixed time period after the air conditioner condenser heat exchanger stops operating, extract the time point corresponding to when each particulate matter sensor first detects that the particulate matter concentration exceeds the concentration threshold, and generate the first threshold exceedance time data. S302: Sort the first over-threshold time data, identify the number of the first particulate sensor that generates an over-threshold response, determine the wall orientation corresponding to the particulate sensor, and obtain the over-threshold response orientation information; S303: Determine the orientation of the wall corresponding to the earliest threshold-exceeding particulate matter sensor based on the above threshold response orientation information, and use the target orientation as the location where the particulate matter concentration first changes, thereby generating the pollution propagation direction.

[0011] As a further aspect of the present invention, the specific steps of the linkage control command are as follows: S401: Call the target orientation marked in the pollution propagation direction, retrieve the air outlet number corresponding to the target orientation of the air conditioner air supply, and set the air outlet state pointed to by the corresponding air outlet number to the air supply power enhancement state, and generate the air outlet air supply state setting result. S402: Call the start delay and duration in the release timing parameters, configure the start control time and continuous control time period for the release of negative oxygen ions in the air conditioner, and generate the negative oxygen ion release setting result; S403: Combine the air outlet air supply status setting result and the negative oxygen ion release setting result to form a linkage control command.

[0012] As a further aspect of the present invention, the enhanced air supply power state is a state in which the operating power of the air supply outlet is higher than the standard ventilation power level set during the initial operation of the air conditioner.

[0013] As a further aspect of the present invention, the specific steps for achieving the air conditioning and purification results are as follows: S501: Arrange the linkage control commands in the order of control signal transmission and calculate the start time difference of each control command as the start time difference of air supply release; S502: Based on the air supply release start time difference, set the duration range of the control command, adjust the start order of the control commands, and generate a synchronous control result for air supply release. S503: Adjust the ratio of the air supply and negative ion release rhythms according to the air supply and release synchronization control rhythm to generate air conditioning and purification results.

[0014] The intelligent negative ion air conditioning and purification system includes: The pressure trend extraction module collects the internal refrigerant pressure change sequence after the air conditioner condenser heat exchanger stops operating, and judges the pressure change trend over a continuous period of time based on the pressure change sequence to obtain pressure change information. The temperature response determination module collects the air temperature change sequence at the same time after the condenser heat exchanger stops running, determines the consistency between the air temperature change and the pressure change information, configures the start delay and duration of negative oxygen ion release, and generates release timing parameters. The particulate matter direction recognition module extracts the time point when the particulate matter sensor at each location in the room first detects that the particulate matter concentration exceeds the concentration threshold, and determines the direction of pollution propagation based on the installation location of the particulate matter sensor. The air supply and release control configuration module adjusts the air supply status of the air conditioner's corresponding air outlet according to the pollution propagation direction, and releases negative oxygen ions from the air conditioner according to the release timing parameters, generating a linkage control command. The synchronous execution adjustment output module allocates the execution order of the linkage control commands, adjusts the synchronous behavior of air supply and release, and generates air conditioning and purification results.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are as follows: In this invention, by monitoring the natural stabilization trend of the internal refrigerant pressure and indoor air temperature after the air conditioner is shut down, a stable environment suitable for performing purification tasks is first identified. This avoids resource waste caused by starting purification under conditions of violent airflow disturbance such as open windows. Next, by comparing the response sequence of particulate matter sensors in different directions, the initial diffusion direction of indoor pollutants is accurately identified, transforming the purification work from a model that covers the entire house to a targeted response to a specific location. Subsequently, the airflow intensity towards the pollution source is enhanced, establishing an efficient transport channel for negative oxygen ions. Furthermore, the release process of negative oxygen ions is precisely synchronized with the start and end times of the enhanced airflow, actively delivering negative oxygen ions to the most polluted areas using enhanced airflow. This achieves rapid and precise removal of suspended particulate matter, solving the problems of blind purification and dispersed purification resources. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the steps of the present invention; Figure 2 This is a detailed schematic diagram of S1 of the present invention; Figure 3 This is a detailed schematic diagram of S2 of the present invention; Figure 4 This is a detailed schematic diagram of S3 of the present invention; Figure 5 This is a detailed schematic diagram of S4 of the present invention; Figure 6 This is a detailed schematic diagram of S5 of the present invention; Figure 7 This is a system module diagram of the present invention. Detailed Implementation

[0018] The technical solution of the present invention will now be described with reference to the accompanying drawings.

[0019] In embodiments of the present invention, words such as "exemplarily," "for example," etc., are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" in the present invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present the concept in a concrete manner. Furthermore, in embodiments of the present invention, the meaning expressed by "and / or" can be both, or either one.

[0020] In the embodiments of this invention, the terms "image" and "picture" may sometimes be used interchangeably. It should be noted that, without emphasizing the distinction between them, they convey the same meaning. Similarly, the terms "of," "corresponding (relevant)," and "corresponding" may sometimes be used interchangeably. It should be noted that, without emphasizing the distinction between them, they convey the same meaning.

[0021] In this embodiment of the invention, sometimes a subscript such as W1 may be written in a non-subscript form such as W1. When the difference is not emphasized, the meaning they express is the same.

[0022] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0023] This embodiment provides an intelligent negative oxygen ion air conditioning and purification method. In practical applications, for example, in an air conditioning and purification operating environment equipped with a condenser heat exchanger, a negative oxygen ion release device, directional air outlets, indoor temperature acquisition components, a room sidewall particulate matter sensor, and an air conditioning control board, the changes in internal refrigerant pressure after the condenser heat exchanger stops operating, the changes in indoor air temperature within the same time range, the changes in room sidewall particulate matter concentration, and the control status of the air outlets are continuously input into the control process of the air conditioning control board. The air conditioning control board generates air conditioning and purification results according to the following steps: pressure trend identification, temperature and pressure change consistency judgment, pollution propagation direction determination, air supply and negative oxygen ion release linkage control, and execution sequence adjustment. Please see Figure 1 and Figure 2 S1: Collect the internal refrigerant pressure change sequence after the air conditioner condenser heat exchanger stops running, determine the pressure change trend over a continuous period of time based on the pressure change sequence, and obtain pressure change information; The pressure change sequence is a time-series data object output by the refrigerant pressure acquisition unit and received by the air conditioning control board after the condenser heat exchanger stops operating. This data object carries the pressure value corresponding to the pressure sampling point, the time information corresponding to the pressure sampling point, and the sequential relationship between the sampling points. The pressure change information is intermediate control data formed after trend identification of the pressure change sequence. It includes the pressure change amplitude range, the continuous change time period, and the pressure change direction. The pressure change amplitude range characterizes the range of pressure state changes between adjacent time periods; the continuous change time period characterizes the time continuity of pressure state changes in the same direction; and the pressure change direction characterizes the trend category of pressure state increasing, decreasing, or remaining stable within the continuous time period. During S1 execution, the air conditioning control board first confirms that the condenser heat exchanger has entered a stopped operation state, and then reads the pressure sampling data from the internal refrigerant pressure acquisition unit after it stops operating. After the sampling data enters the control process, a time sequence verification is performed first. If a time point is missing, repeated, has an abnormal sequence relationship, or the pressure value cannot be parsed, the corresponding sampling point is marked as an abnormal sampling point that cannot participate in trend identification, and the abnormal mark is retained for subsequent traceability. The verified pressure change sequence enters the continuous time trend judgment process. The judgment process is based on the pressure state change relationship between adjacent sampling points, identifies the stability relationship of the pressure change direction and pressure change amplitude within a continuous time, and outputs pressure change information. The pressure change information serves as the reference input for temperature change comparison in S2, and also as the pressure-side basis for subsequent release timing parameter configuration.

[0024] S101: Collect the pressure values ​​and corresponding time information of the internal refrigerant at each pressure sampling point within a set time period after the air conditioner condenser heat exchanger stops running, and obtain the refrigerant pressure change sequence. The set time period is a preset acquisition window for the air conditioning control board to enter pressure tracking state after the condenser heat exchanger stops operating. This acquisition window is not expressed in a specific duration, but is defined by the engineering state that begins after the condenser heat exchanger stop operation signal is confirmed and ends after the continuous data required for pressure trend determination meets the entry conditions. Each pressure sampling point is formed by an internal refrigerant pressure acquisition component. The pressure value is the acquisition data output by the pressure acquisition component on the internal pressure status of the refrigerant pipeline. The time point information is the time sequence identifier that is synchronously bound when the acquired data enters the air conditioning control board. In this process, pressure values ​​and time point information are bound to a common-source sampling record, and the sampling record is entered into the refrigerant pressure change sequence according to the time point information. If a sampling record has missing time points, empty pressure values, duplicate uploads, or abnormal transmission status, it will not directly participate in the subsequent trend identification, but will instead be marked with an abnormal sampling identifier, and the original receiving order will be maintained for traceability of the operation record. The refrigerant pressure change sequence after verification is output to S102 as input for the formation of the pressure change rate sequence of adjacent time periods.

[0025] S102: Extract the pressure and time values ​​corresponding to adjacent time points in the refrigerant pressure change sequence, perform intra-group processing on the pressure change rate within all continuous time periods, and obtain the refrigerant pressure change rate sequence. The pressure change rate sequence is an intermediate trend data object formed by the pressure change relationship between adjacent time points. This data object is not directly output as an independent control result, but is used to carry the continuous relationship of the rate and direction of pressure change between adjacent time points. Intra-group processing refers to mapping the pressure value change relationship between adjacent time points to their temporal sequence within the same continuous time period, forming rate attribution information that reflects the trend of pressure state change. This process preserves the adjacent relationship, directional relationship, and continuity relationship, without introducing specific numerical results. During this process, the pressure and time values ​​between adjacent time points are first read from the refrigerant pressure change sequence. After confirming that all adjacent time points have passed the validity check, the corresponding pressure change rate is assigned. If there is an abnormal sampling marker among adjacent time points, the corresponding adjacent relationship is marked as broken, and the continuous trend splicing before and after that position is blocked. After completing the group processing, the air conditioning control board obtains the refrigerant pressure change rate sequence arranged in chronological order. This sequence is output to S103 to identify the stable relationship of the change direction and amplitude within a continuous time period.

[0026] S103: Identify the direction of change of the refrigerant pressure change rate sequence within a continuous time period, extract trend features under the condition that the rate value continuously decreases and the change amplitude is stable, and generate pressure change information.

[0027] The stability of the pressure change range is determined by comparing the pressure change rate difference interval between adjacent time periods with a preset fluctuation range judgment condition. The pressure change rate difference interval between adjacent time periods represents the category of change difference between adjacent rates. The preset fluctuation range judgment condition is an engineering comparison rule pre-written into the air conditioning control board, used to determine whether the pressure change maintains a gradual decay state. This judgment condition is derived from the pressure recovery control rule after the air conditioning refrigerant circuit stops operating, and does not contain a specific numerical expression. Its function is to classify the rate difference into a stable or non-stable state category. In this process, the refrigerant pressure change rate sequence enters the direction identification process in chronological order. The air conditioning control board first determines whether the rate belongs to a continuously decreasing state within a continuous time period, and then determines whether the pressure change rate difference interval between adjacent time periods meets the preset fluctuation amplitude judgment condition. When it is continuously decreasing and the change amplitude is stable, the trend features of the corresponding continuous time period are extracted, and the pressure change amplitude interval, continuous change time period, and pressure change direction are written into the pressure change information. If the rate direction is reversed, the adjacent relationship is broken, the change amplitude is unstable, or the sampling identifier is abnormal, the corresponding segment is not written into a valid pressure trend, but instead forms a trend unusable state and is fed back to S2, so that S2 only performs temperature side consistency comparison when the pressure side trend is valid.

[0028] Please see Figure 1 and Figure 3 S2: Collect the air temperature change sequence at the same time after the condenser heat exchanger stops running, determine the consistency between air temperature change and pressure change information, configure the start delay and duration of negative oxygen ion release, and generate release timing parameters; The air temperature change sequence is a time-series data object formed by the indoor temperature acquisition component within the same time range after the condenser heat exchanger stops operating. This data object carries the indoor sampling location, temperature change value, sampling time point, and the correspondence between the sampling location and the time point. The release timing parameters are a set of control parameters required for the start-up and continuous control of the negative ion release device. These include the negative ion start-up time setting, the continuous release time setting, and the temperature and pressure response linkage conditions. The negative ion start-up time setting determines the time sequence in which the release control enters the start-up state; the continuous release time setting determines the time range within which the release control remains operational; and the temperature and pressure response linkage conditions limit the correspondence between temperature changes and pressure changes in the direction of continuous trend. During S2 execution, the pressure change information output from S1 is first invoked, and the indoor air temperature change sequence within the time range corresponding to the pressure acquisition process is read synchronously. After the temperature data enters the control process, sampling location verification, time point alignment verification, and data integrity verification are performed. If temperature data at a certain sampling location is missing, the time point cannot correspond to the pressure change information, or the acquisition status is abnormal, the corresponding temperature record is marked as unavailable for temperature-side participation, and subsequent consistency judgments will only use temperature change records that meet the time alignment and data integrity requirements. After completing the consistency judgment, the air conditioning control board generates release timing parameters and outputs these parameters to S4 as inputs for the negative oxygen ion release control timing and continuous control period.

[0029] S201: Collect the air temperature change values ​​at multiple indoor locations within the same time period after the air conditioner condenser heat exchanger stops operating, aggregate the temperature data of each sampling location according to the corresponding time point, and use the maximum temperature difference between adjacent time points to represent the degree of temperature change within the time period, and generate an air temperature change sequence. Multiple indoor locations are temperature sampling locations that have been established with corresponding room areas in the air conditioning control process. The air temperature change values ​​collected at each sampling location are entered into the same temperature data collection process through the acquisition interface of the air conditioning control board. Temperature data collection refers to recording the temperature change values ​​of different sampling locations in the same time sequence according to the corresponding time points, so that the air temperature change sequence can be aligned with the pressure change information in S1 in terms of time relationship. The maximum temperature difference is not disclosed in numerical form in this embodiment, but is used as a state representation of the degree of temperature change within the same time period to express the relative strength of indoor temperature changes between adjacent time points. During this process, the air conditioning control board first reads the temperature change values ​​at each sampling location, and then uses the corresponding time points as the basis for aggregation to form a temperature time sequence record. If the sampling location identifier is missing, the temperature change value is empty, the time point is repeated, or it cannot correspond to the pressure side acquisition time, the temperature record is marked as abnormal and written into the operation record. Abnormal records do not participate in the formation of the temperature change degree. After the aggregation is completed, the air temperature change sequence is output to S202 as input for comparing the temperature change trend direction with the pressure change trend direction.

[0030] S202: Compare the trend direction of the air temperature change sequence with that of the pressure change information, determine the duration of the difference in the direction of the continuous change trend within the set temperature and pressure change consistency judgment range, and obtain the temperature and pressure change analysis results. The temperature and pressure change analysis results are intermediate control data formed by comparing the trends of temperature and pressure changes. This data indicates whether the changes in indoor air temperature can form a continuous response relationship with the changes in internal refrigerant pressure after the condenser heat exchanger stops operating. The consistency judgment range of temperature and pressure changes is set according to the trend comparison rules pre-written into the air conditioning control board. These rules are established based on the engineering response relationship between temperature and pressure changes after the air conditioner stops operating, and are used to classify differences in trend direction into consistent, deviating, or undeterminable states. In this process, the air temperature change sequence is compared according to the time sequence corresponding to the pressure change information. The air conditioning control board first reads the direction of pressure change and the continuous change time period from the pressure change information, and then reads the direction of temperature change and the degree of temperature change from the air temperature change sequence. If the direction of temperature change and the direction of pressure change satisfy the consistency judgment range of temperature and pressure change in terms of continuity, a consistent continuous state is formed and written into the temperature and pressure change analysis results. If the temperature data is insufficient, the pressure change information is in a trend unavailable state, or the time alignment relationship cannot be confirmed, the temperature and pressure change analysis results are marked as unconfigurable, and the automatic generation of negative oxygen ion release timing parameters is blocked, retaining the interface state of manual maintenance or preset safety control path.

[0031] S203: Configure the start-up delay time and continuous release time of the negative oxygen ion release device based on the temperature and pressure change analysis results, and generate release timing parameters.

[0032] The start-up delay time is the time sequence set for the negative ion release device to enter the start-up control state after satisfying the temperature and pressure change response relationship. The continuous release time is the control range for maintaining the release after the negative ion release device enters the operating state. Both types of time control are driven by the temperature and pressure change analysis results and are not expressed through specific numerical values, but rather through control states, sequence, and continuity relationships to enter subsequent linkage control. During this process, the air conditioning control board reads the temperature and pressure change analysis results. If the analysis results show a consistent and continuous state, it generates the negative oxygen ion start-up time setting and continuous release time setting based on the temperature and pressure response linkage conditions, and encapsulates them as release timing parameters. If the analysis results show a deviation or are unconfigurable, the release timing parameters are marked as delayed start or awaiting confirmation to prevent the negative oxygen ion release device from operating directly without considering the temperature and pressure response relationship. The generated release timing parameters are output to S4, which, together with the airflow status of the vents corresponding to the pollution propagation direction, forms a linkage control command.

[0033] Please see Figure 1 and Figure 4S3: Extract the time point at which the particle sensor in each location in the room first detected the particle concentration exceeding the preset concentration judgment condition, and determine the direction of pollution propagation based on the installation location of the particle sensor. The direction of pollution propagation is based on spatial direction data formed by the sequential response of particulate matter sensors on the room's side walls. This data includes the earliest particulate matter detection point exceeding the preset concentration threshold, the corresponding room orientation, and the initial direction of particulate matter diffusion. The preset concentration threshold is a particulate matter concentration status judgment rule written into the air conditioning control board, used to distinguish whether the particulate matter concentration is in a background state or has entered a state requiring coordinated air supply control. The particulate matter sensors are installed at detection positions on each side wall that establish a fixed correspondence with the room's orientation. The air conditioning control board identifies the direction of pollution propagation through the binding relationship between sensor numbers and wall orientations. During S3 execution, the air conditioning control board reads the particulate matter concentration change data from the particulate matter sensors on the room's side walls after the condenser heat exchanger stops operating, and performs correlation verification on the sensor number, installation location, acquisition time, and concentration status. If the sensor number cannot match the wall orientation, the acquired data is missing, the response time sequence is abnormal, or the same sensor repeatedly reports conflicting states, the corresponding sensor record is marked as unavailable and does not directly participate in determining the pollution propagation direction. After completing the screening of valid records, the air conditioning control board determines the room orientation based on the earliest detection point that exceeds the preset concentration judgment condition and generates the pollution propagation direction. The pollution propagation direction is output to S4 for retrieving the corresponding vent number.

[0034] S301: Collect particulate matter concentration change data from particulate matter sensors installed on each side wall of the room within a fixed time period after the air conditioner condenser heat exchanger stops running, extract the time point corresponding to when each particulate matter sensor detects the earliest particulate matter concentration exceeding the preset concentration judgment condition, and generate the earliest over-judgment time data. The fixed time period is a preset acquisition window for the particulate matter sensor to enter the pollution response acquisition state after the condenser heat exchanger stops operating. Its boundary is determined by the stop signal and the integrity of the particulate matter response record, and is not expressed in a specific duration. The particulate matter concentration change data is the time-series data of the concentration status output by the particulate matter sensor, including the sensor number, acquisition time sequence, concentration status change, and acquisition validity indicator. The earliest over-judgment time data is the earliest time sequence record of each sensor reaching the preset concentration judgment condition within the acquisition window, which is used for subsequent sorting and location identification. In this process, the air conditioning control board first reads particulate matter concentration change data from the particulate matter sensors on each side wall, and then imports the sensor number and wall orientation binding relationship into the verification process. For sensors that do not meet the preset concentration judgment conditions, their non-triggered state is recorded; for sensors with missing data, inconsistent formats, unconfirmed transmission, or unidentifiable numbers, their abnormal state is recorded and their orientation judgment qualification is excluded. After the extraction is completed, the earliest over-judgment time data is output to S302 to identify the particulate matter sensor number that first generates a valid response.

[0035] S302: Sort the earliest over-judgment time data, identify the number of the first particulate matter sensor that generates an over-judgment response, determine the wall orientation corresponding to the particulate matter sensor, and obtain the over-judgment response orientation information; The over-response orientation information is intermediate spatial orientation data formed by the binding relationship between the first valid over-response sensor number and the wall orientation. The sorting process does not output specific sequence numbers; instead, it identifies the sensor record that first generated a valid response based on chronological order. The sensor number is the fixed identification identifier of the particulate sensor within the air conditioning control panel, and the wall orientation is the room space location bound to that number during installation and configuration. During this process, the air conditioning control board reads the earliest over-judgment time data generated by S301, first excluding abnormal and non-triggered states, and then organizes the time sequence of valid response records. If the time sequence of valid response records is clear, the corresponding particulate matter sensor number is read, and the wall orientation is determined through the installation location binding relationship. If there are time conflicts, missing sensor numbers, or unsearchable installation location binding relationships among the valid response records, an orientation pending confirmation state is generated and transmitted to S303, ensuring that the pollution propagation direction is not directly generated based on incomplete orientation information. The obtained over-judgment response orientation information is output to S303 as input for determining the target orientation.

[0036] S303: Determine the orientation of the wall corresponding to the earliest over-detection particulate matter sensor based on the over-detection response orientation information, and use the target orientation as the location where the particulate matter concentration first changes, thereby generating the pollution propagation direction.

[0037] The target orientation is the room orientation marker corresponding to the wall where the earliest detected particulate matter sensor is located. In this embodiment, this orientation marker is used to indicate the location where the change in particulate matter concentration is first detected, and serves as a control reference for the initial diffusion direction of particulate matter. The pollution propagation direction does not directly represent the entire spatial form of the actual movement trajectory of particulate matter, but rather represents the directional control basis used by the air conditioning control panel when linking air supply. During this process, the air conditioning control board reads the over-detection response orientation information, confirms the orientation of the wall corresponding to the earliest over-detection particulate sensor, and writes this orientation into the pollution propagation direction. If the over-detection response orientation information is in an orientation pending confirmation state, the pollution propagation direction is marked as not directly oriented, and the vent retrieval protection process is triggered in S4 to prevent air supply control from being enhanced based on an incorrect direction. If the pollution propagation direction is valid, the result is output to S4 as input for retrieving the corresponding vent number of the air conditioner and adjusting the air supply status.

[0038] Please see Figure 1 and Figure 5 S4: Adjust the air supply status of the air conditioner vents in the corresponding direction according to the direction of pollution propagation, and release negative oxygen ions from the air conditioner according to the release timing parameters to generate linkage control commands; The linkage control command is a control command data formed by combining the air outlet air supply status setting result and the negative oxygen ion release setting result. Its content includes the air outlet opening direction, air supply control mode, and negative oxygen ion release time configuration. The air outlet opening direction indicates the air supply outlet corresponding to the pollution propagation direction; the air supply control mode indicates whether the corresponding air outlet enters an enhanced air supply power state or maintains a safe ventilation state; and the negative oxygen ion release time configuration is used to implement the start-up delay and duration control content generated by S2. During S4 execution, the air conditioning control board first reads the pollution propagation direction output from S3 and retrieves the air conditioning vent configuration relationship based on the target orientation. The vent configuration relationship is a preset binding relationship between the vent number and the room orientation, used to convert the pollution propagation direction into an executable vent control object. Then, it reads the release timing parameters output from S2, incorporating the start control time, continuous control time period, and temperature and pressure response linkage conditions into the negative ion release setting results. If the pollution propagation direction cannot be directly oriented or the release timing parameters are in a pending confirmation state, the corresponding control item in the linkage control command is marked as protected. Subsequently, S5 adjusts the execution order according to the protected state to prevent vent control and release control from losing their valid input source.

[0039] S401: Call the target orientation marked in the pollution propagation direction, retrieve the air outlet number corresponding to the target orientation of the air conditioning supply, set the air outlet status pointed to by the corresponding air outlet number to the air supply power enhancement state, and generate the air outlet air supply status setting result. The enhanced air supply power state refers to a state where the operating power of the air supply vents exceeds the standard ventilation power level set during the initial operation of the air conditioner. The standard ventilation power level is the preset air supply baseline state during the initial operation phase, used as a comparison reference for the enhanced air supply state, and is not expressed as a specific power value. The air supply state setting result is control data formed by the combination of air vent number, air vent opening direction, and air supply control mode, used in combination with the S403 negative ion release setting result; During this process, the air conditioning control board reads the target orientation from the direction of pollution propagation and retrieves the corresponding vent number from the vent configuration relationship. If the retrieval is successful, the vent status pointed to by the corresponding vent number is set to the enhanced air supply power state, establishing a corresponding control relationship between the air supply direction and the location where particulate matter is first detected to change. If the target orientation is empty, the vent number does not exist, the vent status cannot be confirmed, or the vent control interface does not return a confirmation status, an vent retrieval anomaly flag is generated, and the air supply control mode is set to the protective air supply state. The vent air supply status setting result is output to S403 as part of the air supply side of the linkage control command.

[0040] S402: Call the start delay and duration in the release timing parameters, configure the start control time and continuous control time period of negative oxygen ion release in the air conditioner, and generate the negative oxygen ion release setting result; The negative ion release setting result consists of control data composed of the start-up control time, continuous control time period, and temperature and pressure response linkage conditions of the negative ion release device. The start-up control time follows the negative ion start-up time setting in S203, the continuous control time period follows the continuous release time setting in S203, and the temperature and pressure response linkage conditions are used to confirm that the release setting is derived from the temperature and pressure change analysis results; During this process, the air conditioning control board reads the release timing parameters, first confirming whether the parameters contain a valid start control time and continuous control time period, and then writes them into the negative ion release control cache. If the release timing parameters are in a delayed start, waiting for confirmation, or unconfigurable state, the negative ion release setting result is marked as a release protection state, and no start command is directly sent to the release device. If the release timing parameters are valid, a negative ion release setting result is generated and output to S403 for combination with the air outlet air supply status setting result.

[0041] S403: Combine the air outlet air supply status setting result and the negative oxygen ion release setting result to form a linkage control command.

[0042] The combination process involves writing the air supply side control data and the release side control data into the same control instruction data structure according to a common execution time sequence and control state relationship. This control instruction data structure carries the air outlet opening direction, air supply control mode, negative ion release time configuration, and anomaly protection flags. The anomaly protection flags are used to record air outlet retrieval anomalies, release protection status, or input data unavailability, enabling subsequent S5 steps to arrange the execution order based on the validity of the control items. During this process, the air conditioning control board first verifies whether the air outlet air supply status setting results include executable air outlet numbers and air supply control modes, and then verifies whether the negative ion release setting results include executable start control timing and continuous control time periods. When both sides' control data are valid, they are combined to form a linkage control command; if either side has a protection status, the linkage control command retains valid control items and marks the restricted execution status. The generated linkage control command is output to S5 for arranging the control signal sending order, judging the start time difference of air supply release, and adjusting synchronization behavior.

[0043] Please see Figure 1 and Figure 6 S5: Assign the execution order of linkage control commands, adjust the synchronization behavior of air supply and release, and generate air conditioning and purification results.

[0044] The air conditioning purification result is the operational result data generated after the execution of the linkage control command. This data includes the synchronous operation status of ventilation and release, the completion status of the adjustment behavior, and the configuration of the air conditioning operation sequence. The synchronous operation status of ventilation and release indicates the coordination relationship between air supply control and negative ion release control in terms of execution sequence. The completion status of the adjustment behavior indicates whether the corresponding control behavior has been confirmed. The configuration of the air conditioning operation sequence records the sequential arrangement of air supply control and release control in this air conditioning purification process. During S5 execution, the air conditioning control board reads the linkage control command output from S4 and parses the vent control items, release control items, and abnormal protection flags within the command. After successful parsing, the control flow arranges the control items according to the control signal sending order and adjusts the start-up order based on the air supply release start time difference. If a control item is not confirmed, the control interface returns an abnormality, or the execution status is not closed, the corresponding control item is written to an incomplete state, triggering operation record keeping and subsequent feedback. After completing the execution order allocation and synchronization behavior adjustment, the air conditioning purification result is generated, which the air conditioning control board saves the operation flow sequence configuration and serves as a basis for subsequent control traceability.

[0045] S501: Arrange the linkage control commands according to the order of control signal transmission and determine the start time difference of each control command as the start time difference of air supply release; The air supply release start time difference is the temporal relationship between the air supply control item and the negative oxygen ion release control item in terms of their activation sequence. It is used to characterize the sequential connection between air supply and negative oxygen ion release. This state is not expressed as a specific time value, but rather as a control state such as synchronization, air supply first, release first, or restricted execution, which leads to subsequent adjustment processes. During this process, the air conditioning control board reads the vent control items and release control items from the linkage control commands and arranges them according to the order in which the control signals are sent. If both the vent control items and release control items are executable, their initial relationship is determined and the air supply release start time difference is written. If there is a restricted execution state, a missing control item, or an unconfirmed control interface, the initial relationship is marked as pending adjustment, and the corresponding source of the error is retained. The air supply release start time difference is output to S502 to set the duration range of the control commands and adjust the start order.

[0046] S502: Based on the start time difference of air supply release, set the duration range of the control command, adjust the start order of the control commands, and generate the air supply release synchronization control result; The duration interval is the control range within which the air supply control item and the release control item remain in execution state, used to ensure that the air supply behavior and the negative oxygen ion release behavior form a synchronized rhythm that can be tracked by the air conditioning control panel. The air supply and release synchronization control result is the control rhythm data formed after sorting out the start sequence, duration relationship, and restricted state of the air supply control item and the release control item; During this process, the air conditioning control board determines whether the start-up sequence of the air supply control and release control needs to be adjusted based on the start-up time difference of the air supply and release output from S501. If the air supply from the vents requires establishing an air supply path first, the air supply control item enters the priority start state, and the release control item enters the running state according to the release timing parameters. If the release control needs to wait for confirmation of temperature and pressure change analysis results, the release control item remains in the waiting state, and the air supply control item performs directional air supply according to the direction of pollution propagation. If any control item has an unconfirmed state, the air supply and release synchronization control result is recorded as a restricted operating rhythm, and the abnormal control item is output to the operation record. The generated air supply and release synchronization control result is output to S503 to adjust the ratio of the operating rhythm of air conditioning air supply and negative oxygen ion release.

[0047] S503: Adjusts the ratio of the air supply and negative ion release rhythms according to the synchronous control rhythm of air supply and release to generate air conditioning and purification results.

[0048] The air supply and release synchronization control rhythm is the basis for the combined control of the start-up sequence, continuity, and restricted state of the S502 output. The operating rhythm ratio relationship is the connection relationship between air supply control and negative oxygen ion release control in the same air conditioning purification process. It is used to determine when to maintain directional air supply, when to enter negative oxygen ion release, when to confirm the completion of control behavior, and when to record abnormal feedback. During this process, the air conditioning control board reads the synchronous control results of the air supply and release, and rhythmically matches the vent opening direction and air supply control mode corresponding to the air supply control item with the release time configuration corresponding to the negative oxygen ion release control item. If both control items are confirmed to have been executed, an air conditioning purification result is generated, which includes the synchronous operation status of ventilation and release, the completion status of adjustment behavior, and the configuration of the air conditioning operation process sequence. If there is an unconfirmed execution, an interface return error, or a restricted control item status, the corresponding incomplete status is written into the air conditioning purification result, and the source of the error, the control item category, and the feedback path are recorded in the operation log. Thus, the air conditioning purification result can trace back the generation link between pressure change information, release timing parameters, pollution propagation direction, and linkage control commands, enabling the air conditioning air supply and negative oxygen ion release to complete linkage in the same control process according to the confirmed data source, judgment rules, and execution sequence. The energy-saving air conditioner in this solution is equipped with a condenser heat exchanger, an internal refrigerant pressure acquisition component, an indoor temperature acquisition component, a room side wall particulate matter sensor, directional air supply vents, a negative oxygen ion release device, and an air conditioning control board. The condensing heat exchanger is used to generate the source of internal refrigerant pressure changes after operation stops. The internal refrigerant pressure acquisition unit generates a pressure change sequence, the indoor temperature acquisition unit generates an air temperature change sequence, the room sidewall particulate matter sensor generates particulate matter concentration change data, the directional air supply vents adjust the air supply status according to the direction of pollution propagation, the negative ion release device releases negative ions according to release timing parameters, and the air conditioning control board receives the above data and generates linkage control commands. Therefore, the energy-saving air conditioner is not an additional independent device, but rather the air conditioning unit itself in this solution, carrying out pressure acquisition, temperature acquisition, particulate matter detection, air supply adjustment, and negative ion release linkage control. The air conditioning purification results can trace the generation chain between pressure change information, release timing parameters, pollution propagation direction, and linkage control commands, enabling the energy-saving air conditioner's air supply and negative ion release to complete linkage in the same control process according to the confirmed data source, judgment rules, and execution sequence.

[0049] Please see Figure 7 The intelligent negative ion air conditioning and purification system includes: The pressure trend extraction module collects the internal refrigerant pressure change sequence after the air conditioner condenser heat exchanger stops operating, and judges the pressure change trend over a continuous period of time based on the pressure change sequence to obtain pressure change information. The temperature response determination module collects the air temperature change sequence at the same time after the condenser heat exchanger stops running, judges the consistency between air temperature change and pressure change information, configures the start delay and duration of negative oxygen ion release, and generates release timing parameters. The particulate matter direction recognition module extracts the time point when the particulate matter sensor at each location in the room first detects that the particulate matter concentration exceeds the concentration threshold, and determines the direction of pollution propagation based on the installation location of the particulate matter sensor. The air supply and release control configuration module adjusts the air supply status of the air conditioner's corresponding air outlets according to the direction of pollution propagation, and releases negative oxygen ions from the air conditioner according to the release timing parameters, generating linkage control commands. The synchronous execution adjustment output module allocates the execution sequence of linkage control commands, adjusts the synchronous behavior of air supply and release, and generates air conditioning and purification results.

[0050] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An intelligent negative oxygen ion air conditioning and purification method, characterized in that, Includes the following steps: S1: Collect the internal refrigerant pressure change sequence after the air conditioner condenser heat exchanger stops running, determine the pressure change trend over continuous time based on the pressure change sequence, and obtain pressure change information; S2: Collect the air temperature change sequence at the same time after the condenser heat exchanger stops running, determine the consistency between the air temperature change and the pressure change information, configure the start delay and duration of negative oxygen ion release, and generate release timing parameters; S3: Extract the time point at which the particulate matter sensor at each location in the room first detects that the particulate matter concentration exceeds the concentration threshold, and determine the direction of pollution propagation based on the installation location of the particulate matter sensor; S4: Adjust the air supply status of the air conditioner vents in the corresponding direction according to the pollution propagation direction, and release negative oxygen ions from the air conditioner according to the release timing parameters to generate a linkage control command; S5: Assign the execution order of the linkage control commands, adjust the synchronization behavior of air supply and release, and generate air conditioning and purification results.

2. The intelligent negative oxygen ion air conditioning and purification method according to claim 1, characterized in that, The pressure change information includes the pressure change range, continuous change time period, and pressure change direction. The release timing parameters include the negative oxygen ion start time setting, continuous release time setting, and temperature-pressure response linkage conditions. The pollution propagation direction includes the first detection point of particulate matter exceeding the threshold, the room location corresponding to the detection point, and the initial diffusion direction of particulate matter. The linkage control commands include the air vent opening direction, air supply control mode, and negative oxygen ion release time configuration. The air conditioning purification results include the synchronous operation status of ventilation and release, the completion status of the adjustment behavior, and the configuration of the air conditioning operation process sequence.

3. The intelligent negative oxygen ion air conditioning and purification method according to claim 1, characterized in that, The specific steps for obtaining the pressure change information are as follows: S101: Collect the pressure value and corresponding time information of the internal refrigerant at each pressure sampling point within a set time period after the air conditioner condenser heat exchanger stops running, and obtain the refrigerant pressure change sequence. S102: Extract the pressure and time values ​​corresponding to adjacent time points in the refrigerant pressure change sequence, perform intra-group calculations on the pressure change rate over all continuous time periods, and obtain the refrigerant pressure change rate sequence. S103: Identify the direction of change of the refrigerant pressure change rate sequence within a continuous time period, extract trend features under the condition that the rate value continuously decreases and the change amplitude is stable, and generate pressure change information.

4. The intelligent negative oxygen ion air conditioning and purification method according to claim 3, characterized in that, The stability of the change range is determined by comparing the range of pressure change rate differences between adjacent time periods with the fluctuation range threshold.

5. The intelligent negative oxygen ion air conditioning and purification method according to claim 1, characterized in that, The specific steps for releasing the timing parameters are as follows: S201: Collect the air temperature change values ​​at multiple indoor locations within the same time period after the air conditioner condenser heat exchanger stops operating, aggregate the temperature data of each sampling location according to the corresponding time point, and use the maximum temperature difference between adjacent time points to represent the degree of temperature change within the time period, generating an air temperature change sequence. S202: Compare the air temperature change sequence with the change trend direction in the pressure change information, determine the duration of the difference in the continuous change trend direction within the set temperature and pressure change consistency threshold range, and obtain the temperature and pressure change analysis results; S203: Configure the start-up delay time and continuous release time of the negative oxygen ion release device according to the temperature and pressure change analysis results, and generate release timing parameters.

6. The intelligent negative oxygen ion air conditioning and purification method according to claim 1, characterized in that, The specific steps for the direction of pollution propagation are as follows: S301: Collect particulate matter concentration change data from particulate matter sensors installed on each side of the room within a fixed time period after the air conditioner condenser heat exchanger stops operating, extract the time point corresponding to when each particulate matter sensor first detects that the particulate matter concentration exceeds the concentration threshold, and generate the first threshold exceedance time data. S302: Sort the first over-threshold time data, identify the number of the first particulate sensor that generates an over-threshold response, determine the wall orientation corresponding to the particulate sensor, and obtain the over-threshold response orientation information; S303: Determine the orientation of the wall corresponding to the earliest threshold-exceeding particulate matter sensor based on the above-threshold response orientation information, and use the target orientation as the location where the particulate matter concentration first changes, thereby generating the pollution propagation direction.

7. The intelligent negative oxygen ion air conditioning and purification method according to claim 1, characterized in that, The specific steps of the linkage control command are as follows: S401: Call the target orientation marked in the pollution propagation direction, retrieve the air outlet number corresponding to the target orientation of the air conditioner air supply, and set the air outlet state pointed to by the corresponding air outlet number to the air supply power enhancement state, and generate the air outlet air supply state setting result. S402: Call the start delay and duration in the release timing parameters, configure the start control time and continuous control time period for the release of negative oxygen ions in the air conditioner, and generate the negative oxygen ion release setting result; S403: Combine the air outlet air supply status setting result and the negative oxygen ion release setting result to form a linkage control command.

8. The intelligent negative oxygen ion air conditioning and purification method according to claim 7, characterized in that, The enhanced air supply power state refers to a state where the operating power of the air supply outlet is higher than the standard ventilation power level set during the initial operation of the air conditioner.

9. The intelligent negative oxygen ion air conditioning and purification method according to claim 1, characterized in that, The specific steps for achieving the air conditioning purification results are as follows: S501: Arrange the linkage control commands in the order of control signal transmission and calculate the start time difference of each control command as the start time difference of air supply release; S502: Based on the air supply release start time difference, set the duration range of the control command, adjust the start order of the control commands, and generate a synchronous control result for air supply release. S503: Adjust the ratio of the air supply and negative ion release rhythms according to the air supply and release synchronization control rhythm to generate air conditioning and purification results.

10. An intelligent negative ion air conditioning and purification system, characterized in that, The system is used to implement the intelligent negative oxygen ion air conditioning and purification method according to any one of claims 1-9, and the system comprises: The pressure trend extraction module collects the internal refrigerant pressure change sequence after the air conditioner condenser heat exchanger stops operating, and judges the pressure change trend over a continuous period of time based on the pressure change sequence to obtain pressure change information. The temperature response determination module collects the air temperature change sequence at the same time after the condenser heat exchanger stops running, determines the consistency between the air temperature change and the pressure change information, configures the start delay and duration of negative oxygen ion release, and generates release timing parameters. The particulate matter direction recognition module extracts the time point when the particulate matter sensor at each location in the room first detects that the particulate matter concentration exceeds the concentration threshold, and determines the direction of pollution propagation based on the installation location of the particulate matter sensor. The air supply and release control configuration module adjusts the air supply status of the air conditioner's corresponding air outlet according to the pollution propagation direction, and releases negative oxygen ions from the air conditioner according to the release timing parameters, generating a linkage control command. The synchronous execution adjustment output module allocates the execution order of the linkage control commands, adjusts the synchronous behavior of air supply and release, and generates air conditioning and purification results.

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