Control method for air conditioning system, air conditioning system, and storage medium

Abstract

The invention discloses a control method of an air conditioning system, the air conditioning system and a storage medium. The method comprises the following steps: when a state parameter meets the condition that the duration of a preset formaldehyde removal time period is longer than the predicted duration of formaldehyde removal of a target space in a preset state, controlling the air conditioner to perform heating operation according to a preset operation parameter in a first time period in the preset formaldehyde removal time period, controlling the air conditioner to stop in a second time period in the preset formaldehyde removal time period or controlling the air conditioner to perform heating operation according to the first operation parameter; wherein the preset state includes that the air conditioner is controlled to heat according to preset operation parameters, and the frosting risk, corresponding to the first time period, of the air conditioner is smaller than that of the air conditioner; the temperature of the indoor heat exchanger when the air conditioner operates according to the preset operation parameters is higher than the temperature of the indoor heat exchanger when the air conditioner operates according to the first operation parameters. The invention aims to meet the formaldehyde removal requirement and improve the energy efficiency of the air conditioner.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning systems, and in particular to a control method of an air conditioning system, an air conditioning system and a storage medium. Background Art

[0002] During the formaldehyde removal process, the air conditioning system generally accelerates the release of indoor formaldehyde through heating operation of the air conditioner, and turns on the fresh air fan to ventilate the room to remove the formaldehyde.

[0003] Currently, during the formaldehyde removal process, no matter how the operating conditions change, the air conditioner remains on and operates at a fixed set temperature. However, under some harsh conditions, the outdoor unit of the air conditioner is prone to frost, resulting in a decrease in the heating capacity of the air conditioner, an increase in the energy consumption of the air conditioner, and low energy efficiency. Summary of the invention

[0004] The main purpose of the present invention is to provide a control method for an air conditioning system, an air conditioning system and a storage medium, aiming to meet the demand for formaldehyde removal while improving the energy efficiency of the air conditioner.

[0005] To achieve the above object, the present invention provides a control method for an air conditioning system, wherein the air conditioning system includes an air conditioner, and the control method for the air conditioning system includes the following steps:

[0006] Acquire a state parameter, wherein the state parameter represents a relationship between a duration of a preset formaldehyde removal period of a target space and a predicted duration of formaldehyde removal of the target space under a preset state, wherein the preset state includes controlling the heating operation of the air conditioner with preset operating parameters;

[0007] When the state parameter meets the target condition, the air conditioner is controlled to operate in heating mode according to the preset operating parameter in a first period of the preset formaldehyde removal period, and the air conditioner is controlled to stop or to operate in heating mode according to the first operating parameter in a second period of the preset formaldehyde removal period;

[0008] Among them, the target condition indicates that the duration of the preset formaldehyde removal period is greater than the predicted duration, the frost risk of the air conditioner corresponding to the first period is less than the frost risk of the air conditioner corresponding to the second period, and the indoor heat exchanger temperature of the air conditioner when operating with the preset operating parameters is higher than the indoor heat exchanger temperature of the air conditioner when operating with the first operating parameters.

[0009] Optionally, the first time period is a time period in which the outdoor environmental parameters meet preset conditions, and the second time period is a time period in which the outdoor environmental parameters do not meet the preset conditions. Before the steps of controlling the air conditioner to operate for heating according to the preset operating parameters in the first time period in the preset formaldehyde removal time period, and controlling the air conditioner to shut down or controlling the air conditioner to operate for heating according to the first operating parameters in the second time period in the preset formaldehyde removal time period, the method further includes:

[0010] When the state parameter meets the target condition, obtaining the outdoor environment data within the preset formaldehyde removal period;

[0011] The preset condition is determined according to the outdoor environment data.

[0012] Optionally, the outdoor environmental data includes outdoor environmental parameters corresponding to different unit time periods within the preset formaldehyde removal time period, and the step of determining the preset condition according to the outdoor environmental data includes:

[0013] The duration of the unit time period is accumulated according to the trend of the frost risk of the air conditioner represented by the outdoor environmental parameters from low to high, until the accumulated duration is greater than or equal to the predicted duration, and the preset condition is determined according to the outdoor environmental parameters corresponding to the accumulated duration.

[0014] Optionally, the trend of the frost risk of the air conditioner represented by the outdoor environmental parameter from low to high accumulates the duration of the unit time period until the accumulated duration is greater than or equal to the predicted duration, and the step of determining the preset condition according to the outdoor environmental parameter corresponding to the accumulated duration includes:

[0015] The total duration of the unit time period in which the accumulated outdoor environmental parameters meet the first condition;

[0016] When the total duration is greater than or equal to the predicted duration, the duration of the unit time periods satisfying the first condition is accumulated in ascending order according to the frost risk indicated by the outdoor environmental parameter until a first accumulated duration is greater than or equal to the predicted duration, and the preset condition is determined according to the outdoor environmental parameter corresponding to the first accumulated duration;

[0017] When the total duration is less than the predicted duration, the duration of the unit time period that does not meet the first condition is accumulated in ascending order according to the frost thickness represented by the outdoor environment parameter until the sum of the second accumulated duration and the total duration is greater than or equal to the predicted duration, and the preset condition is determined according to the outdoor environment parameters corresponding to the second accumulated duration and the total duration;

[0018] The first condition indicates that the frost risk of the air conditioner is low.

[0019] Optionally, the outdoor environmental parameters include outdoor temperature and outdoor humidity, and the first condition includes one of the following conditions:

[0020] The outdoor temperature is greater than an upper limit of a preset temperature range;

[0021] The outdoor temperature is within a preset temperature range, and the outdoor humidity is less than a lower limit of the preset humidity range;

[0022] The preset temperature range and the preset humidity range are preset outdoor environmental parameter ranges when the air conditioner has a high risk of frosting.

[0023] Optionally, the step of accumulating the duration of unit time periods satisfying the first condition in ascending order according to the frost risk represented by the outdoor environmental parameter until the first accumulated duration obtained is greater than or equal to the predicted duration includes:

[0024] The durations of the unit time periods satisfying the first condition are accumulated in order from large to small according to the outdoor temperature until a first accumulated duration is obtained that is greater than or equal to the predicted duration.

[0025] Optionally, the preset temperature interval includes at least two sub-temperature intervals, the preset humidity interval includes at least two sub-humidity intervals, the combination interval is defined to include the sub-temperature interval and the sub-humidity interval, different combination intervals represent different frost thicknesses of the air conditioner, the first unit time period is defined as a unit time period that does not meet the first condition, and the step of accumulating the duration of the unit time period that does not meet the first condition in ascending order according to the frost thickness represented by the outdoor environmental parameter until the sum of the second accumulated duration and the total duration is greater than or equal to the predicted duration includes:

[0026] Determine the combined interval of the outdoor temperature and the outdoor humidity corresponding to each first unit time period, and obtain the first unit time period corresponding to each combined interval;

[0027] The duration of the first unit period is accumulated according to the order of frost thickness characterized by the combined intervals from small to large and the order of outdoor temperature in the combined intervals from large to small, until the sum of the obtained second accumulated duration and the total duration is greater than or equal to the predicted duration.

[0028] Optionally, when the state parameter meets the target condition, before the step of acquiring the outdoor environment data within the preset formaldehyde removal period, the method further includes:

[0029] The combined interval is divided into the at least two sub-temperature intervals and the at least two sub-humidity intervals according to the defrosting cycle.

[0030] Optionally, the outdoor environmental parameter includes outdoor temperature, and the step of determining the preset condition according to the outdoor environmental parameter corresponding to the first accumulated time includes:

[0031] Determine that the lowest temperature among all outdoor temperatures corresponding to the first accumulated duration is a critical temperature, wherein the preset condition includes that the outdoor ambient temperature is greater than or equal to the critical temperature;

[0032] Optionally, the outdoor environmental parameter includes outdoor temperature, and the step of determining the preset condition according to the outdoor environmental parameter corresponding to the second accumulated duration and the total duration includes:

[0033] The lowest temperature among all outdoor temperatures corresponding to the second accumulated duration and the total duration is determined as a critical temperature, and the preset condition includes that the outdoor ambient temperature is greater than or equal to the critical temperature.

[0034] Optionally, the state parameter includes the predicted duration and the duration of the preset formaldehyde removal period, the air conditioning system further includes a fresh air fan, the preset state includes ventilation operation of the fresh air fan, and the fresh air fan ventilation operation during the preset formaldehyde removal period, and the step of obtaining the predicted duration includes:

[0035] Obtaining the formaldehyde concentration of the target space and the ventilation operation parameters of the fresh air fan;

[0036] The predicted duration is determined according to the formaldehyde concentration, the ventilation operation parameter and the preset operation parameter.

[0037] Optionally, the step of determining the predicted duration according to the formaldehyde concentration, the ventilation operating parameters and the preset operating parameters includes:

[0038] Acquire spatial dimension parameters of the target space;

[0039] Acquire the target relationship among the formaldehyde concentration, the ventilation operation parameter, the preset operation parameter and the predicted duration according to the space size parameter;

[0040] The formaldehyde concentration, the ventilation operating parameters, and the predicted duration corresponding to the preset operating parameters are determined according to the target relationship.

[0041] Optionally, after the step of obtaining the state parameter, the method further includes:

[0042] When the state parameter does not meet the target condition, the air conditioner is controlled to perform heating operation according to the preset operation parameter.

[0043] Optionally, the state parameter includes the predicted duration and the duration of the preset formaldehyde removal period, and the target condition includes that the duration of the preset formaldehyde removal period is greater than the predicted duration;

[0044] Optionally, the state parameters include the target formaldehyde removal temperature required in the preset formaldehyde removal period and the preset formaldehyde removal temperature of the air conditioner under the preset state, and the target condition includes that the preset formaldehyde removal temperature is greater than the target formaldehyde removal temperature.

[0045] In addition, in order to achieve the above-mentioned purpose, the present application also proposes an air conditioning system, which includes an air conditioner and a control device, the air conditioner is connected to the control device, and the control device includes: a memory, a processor, and a control program of the air conditioning system stored in the memory and executable on the processor, and when the control program of the air conditioning system is executed by the processor, the steps of the control method of the air conditioning system as described in any one of the above items are implemented.

[0046] In addition, in order to achieve the above-mentioned purpose, the present application also proposes a storage medium, on which a control program of an air conditioning system is stored. When the control program of the air conditioning system is executed by a processor, the steps of the control method of the air conditioning system as described in any of the above items are implemented.

[0047] The present invention proposes a control method for an air conditioning system. When the method determines through state parameters that the duration of a preset formaldehyde removal period is longer than the formaldehyde removal time required when the air conditioner is running at preset operating parameters, the method no longer operates at fixed operating parameters during the preset formaldehyde removal period. Instead, the air conditioner is controlled to operate at preset operating parameters during a first period when the risk of frost is lower, so as to meet the formaldehyde removal demand by performing indoor heating through an indoor heat exchanger with a higher temperature. During a second period when the risk of frost is higher, the air conditioner is controlled to shut down or operate the indoor heat exchanger at a lower temperature, so as to effectively reduce the risk of frost on the air conditioner and avoid an increase in energy consumption of the air conditioner caused by frost on the air conditioner. Based on this, the formaldehyde removal demand can be met while improving the energy efficiency of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 A schematic diagram of the hardware structure involved in the operation of an air conditioning system according to an embodiment of the present invention;

[0049] Figure 2 A schematic flow chart of an embodiment of a control method for an air conditioning system according to the present invention;

[0050] Figure 3 A flow chart of another embodiment of a control method for an air conditioning system according to the present invention;

[0051] Figure 4A flow chart of another embodiment of a control method for an air conditioning system according to the present invention;

[0052] Figure 5 for Figure 4 Detailed flowchart of step S221 in FIG.

[0053] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0054] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0055] An embodiment of the present invention provides an air conditioning system.

[0056] In the embodiment of the present invention, refer to Figure 1 The air conditioning system includes a control device 100, an air conditioner 200, and a fresh air blower 300. The air conditioner 200 and the fresh air blower 300 are both connected to the control device 100.

[0057] In this embodiment, the air conditioner 200 is a multi-split air conditioner, and the air conditioner 200 is used to adjust the temperature of at least two indoor spaces. The multi-split air conditioner includes at least two indoor units, which are respectively arranged in different indoor spaces to adjust the air in different indoor spaces, wherein each indoor unit includes an indoor heat exchanger and a control valve connected in series with the indoor heat exchanger, and the indoor heat exchanger is correspondingly provided with an indoor fan. In some embodiments, the air conditioner 200 may also be an air conditioner 200 independently arranged in a space, such as a cabinet air conditioner, a window air conditioner, a wall-mounted air conditioner, etc.

[0058] In this embodiment, the fresh air fan 300 can introduce outdoor fresh air into the room and exhaust indoor air to the outside. The fresh air fan 300 is used to adjust the fresh air of at least two indoor spaces. The fresh air fan 300 can include more than one air outlet module, which are respectively arranged in different indoor spaces to adjust the air of different indoor spaces. In some embodiments, the fresh air fan 300 can also be independently arranged in a fresh air device in a space.

[0059] Further, see Figure 1 The air conditioning system further includes an environment detection module 400 connected to the control device 100, which may include an indoor detection module and / or an outdoor detection module for detecting indoor and / or outdoor air state parameters (such as temperature, air pressure, humidity, etc.). Wherein, when the air conditioner 200 is a multi-split air conditioner, each indoor unit may be provided with an indoor detection module, and the specific indoor detection module may be provided at the return air outlet of the indoor unit.

[0060] Further, see Figure 1The air conditioning system further includes a formaldehyde detection module 500 connected to the control device 100, which can be used to detect formaldehyde state parameters in the indoor space, such as formaldehyde concentration.

[0061] In the embodiment of the present invention, refer to Figure 1 The control device 100 of the air conditioning system includes: a processor 1001, such as a CPU, a memory 1002, and a timer 1003. Among them, these components are connected and communicated through a communication bus. The memory 1002 can be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1002 can also be a storage device independent of the aforementioned processor 1001.

[0062] Those skilled in the art will understand that Figure 1 The device structure shown in the figure does not constitute a limitation of the device, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0063] like Figure 1 As shown, the memory 1002 as a computer storage medium may include a control program for the air conditioning system.

[0064] exist Figure 1 In the device shown, the processor 1001 can be used to call the control program of the air conditioning system stored in the memory 1002, and execute the relevant steps of the control method of the air conditioning system in the following embodiments.

[0065] The embodiment of the present invention further provides a control method of an air conditioning system, which is applied to the above-mentioned air conditioning system.

[0066] Reference Figure 2 , an embodiment of a control method of an air conditioning system of the present application is proposed. In this embodiment, the control method of the air conditioning system includes:

[0067] Step S10, obtaining a state parameter, wherein the state parameter represents a relationship between a preset formaldehyde removal period of the target space and a predicted formaldehyde removal period of the target space under a preset state, wherein the preset state includes controlling the heating operation of the air conditioner and the ventilation operation of the fresh air fan at a first formaldehyde removal temperature;

[0068] The state parameters may include first-category parameters related to the duration of formaldehyde removal in the target space under a preset state and second-category parameters related to the control of the duration of formaldehyde removal in a preset formaldehyde removal period. The first-category parameters include but are not limited to at least one of the following: predicted duration, first formaldehyde removal temperature, historical formaldehyde removal duration, etc. The second-category parameters include but are not limited to at least one of the following: duration of a preset formaldehyde removal period, target formaldehyde removal temperature required, target formaldehyde concentration change value, etc.

[0069] The preset formaldehyde removal period is specifically a preset time period for the air conditioning system to remove formaldehyde. The air conditioning system needs to perform formaldehyde removal operation within the preset formaldehyde removal period and make the formaldehyde concentration in the target space less than or equal to the target formaldehyde concentration. The preset formaldehyde removal period can be determined by obtaining user configuration parameters, or by the air conditioning system based on user data characterized by monitoring data. For example, the start time of the formaldehyde removal period set by the user and the end time of the formaldehyde removal period set by the user can be obtained, and the time period between the start time and the end time is determined as the preset formaldehyde removal period, and the duration of the preset formaldehyde removal period is the preset duration.

[0070] The prediction duration is specifically the shortest duration required for the target space to achieve the target formaldehyde removal effect under the preset state. The prediction duration can be determined based on the actual state parameters of the monitored target space, or based on the parameters input by the user.

[0071] The preset operating parameters are specifically the parameters for the operation control of the air conditioner in a preset state. In the present embodiment, the preset operating parameters include a preset formaldehyde removal temperature, and the preset formaldehyde removal temperature is the target ambient temperature that the target space needs to reach during the formaldehyde removal process. In the present embodiment, the preset formaldehyde removal temperature is the maximum formaldehyde removal temperature. In other embodiments, the preset formaldehyde removal temperature may also be other formaldehyde removal temperatures that are lower than the maximum formaldehyde removal temperature, or may be a temperature set by the user. In other embodiments, the preset operating parameters may also be operating parameters of other types of air conditioners, and the preset operating parameters include the preset operating frequency of the compressor in the air conditioner, the preset speed of the indoor fan, etc.

[0072] In this embodiment, the fresh air blower in the air conditioning system is in ventilation operation during the formaldehyde removal process. The preset state includes the fresh air blower ventilation operation and the air conditioner heating operation controlled according to the preset operation parameters. In other embodiments, the formaldehyde removal process can also be achieved through the formaldehyde removal module in the target space.

[0073] Step S20, when the state parameter meets the target condition, the air conditioner is controlled to operate in heating mode according to the preset operating parameter in a first period of the preset formaldehyde removal period, and the air conditioner is controlled to be shut down or to operate in heating mode according to the first operating parameter in a second period of the preset formaldehyde removal period;

[0074] Among them, the target condition indicates that the duration of the preset formaldehyde removal period is greater than the predicted duration, the frost risk of the air conditioner corresponding to the first period is less than the frost risk of the air conditioner corresponding to the second period (this sentence can be understood as, the frost risk of the air conditioner when operating at the set heating temperature in the first period is less than the frost risk of the air conditioner when operating at the set heating temperature in the second period), and the indoor heat exchanger temperature of the air conditioner when operating at the preset operating parameters is higher than the indoor heat exchanger temperature of the air conditioner when operating at the first operating parameters.

[0075] When the air conditioner operates with preset operating parameters or first operating parameters, the outdoor heat exchanger of the air conditioner does not frost, or, when the air conditioner operates with preset operating parameters in a first time period and with first operating parameters in a second time period, the predicted total defrost operation time required by the air conditioner is the shortest (or the total defrost operation time is less than the preset time, which can be determined by outdoor temperature, outdoor humidity or outdoor enthalpy).

[0076] If the state parameters meet the target conditions, it can be considered that the air conditioner maintains a high formaldehyde removal temperature as the target output during the entire preset formaldehyde removal period, which will result in excess heat output from the air conditioner when the target formaldehyde removal effect is achieved in the target space, resulting in unnecessary energy consumption; if the state parameters do not meet the target conditions, it can be considered that the air conditioner needs to maintain a high formaldehyde removal temperature output during the entire preset formaldehyde removal period to ensure that the target space can achieve the target formaldehyde removal effect or the deviation from the target formaldehyde removal effect is minimal. The target formaldehyde removal effect here specifically means that the formaldehyde concentration in the target space at the end of the preset formaldehyde removal period is less than or equal to the target formaldehyde concentration.

[0077] In one implementation, the state parameter includes the predicted duration and the duration of the preset formaldehyde removal period, and the target condition includes that the duration of the preset formaldehyde removal period is greater than the predicted duration;

[0078] In another implementation, the state parameter includes the target formaldehyde removal temperature required for the preset formaldehyde removal period and the preset formaldehyde removal temperature of the air conditioner under the preset state, and the target condition includes that the preset formaldehyde removal temperature is greater than the target formaldehyde removal temperature. The target formaldehyde removal temperature here is specifically determined according to the preset duration of the preset formaldehyde removal period, and different preset durations correspond to different target formaldehyde removal temperatures, and the target formaldehyde removal temperature is negatively correlated with the preset duration.

[0079] During the heating operation of the air conditioner, the indoor heat exchanger is in a condensing state and the outdoor heat exchanger is in an evaporating state.

[0080] During the preset formaldehyde removal period, the air conditioner is controlled as described above, and the fresh air fan operates for ventilation. The ventilation volume during the ventilation operation of the fresh air fan can be the preset ventilation volume, or the ventilation volume determined according to the actual operating conditions of the air conditioning system.

[0081] The preset formaldehyde removal period can be divided into a first period and a second period. The first period and the second period can be fixed periods pre-set before entering the preset formaldehyde removal period, or can be periods divided within the preset formaldehyde removal period based on whether preset conditions are met.

[0082] In this embodiment, the preset operating parameters include a preset formaldehyde removal temperature. The indoor temperature of the target space is detected during the first time period, and the heating operation of the air conditioner is controlled according to the temperature difference between the indoor temperature and the preset formaldehyde removal temperature. For example, the operating frequency of the compressor in the air conditioner is determined according to the temperature difference, and the compressor of the air conditioner is controlled to operate at the determined operating frequency.

[0083] In this embodiment, the air conditioner is controlled to be shut down during the second period of the preset formaldehyde removal period to further reduce the energy consumption of the air conditioner.

[0084] The first operating parameter may be a preset fixed parameter, or an operating parameter determined according to the actual operating conditions of the air conditioning system. In this embodiment, the preset operating parameter includes a preset formaldehyde removal temperature, the first operating parameter includes a first formaldehyde removal temperature, and the preset formaldehyde removal temperature is greater than the first formaldehyde removal temperature. In other embodiments, the preset operating parameter includes a first preset frequency, the first operating parameter includes a second preset frequency, and the first preset frequency is greater than the second preset frequency.

[0085] A control method for an air conditioning system is proposed in an embodiment of the present invention. When the method determines through state parameters that the duration of a preset formaldehyde removal period is longer than the formaldehyde removal time required when the air conditioner is running at preset operating parameters, the method no longer operates at fixed operating parameters during the preset formaldehyde removal period. Instead, the air conditioner is controlled to operate at preset operating parameters during a first period when the risk of frost is lower, so as to meet the formaldehyde removal demand by performing indoor heating through an indoor heat exchanger with a higher temperature. During a second period when the risk of frost is higher, the air conditioner is controlled to shut down or operate the indoor heat exchanger at a lower temperature, so as to effectively reduce the risk of frost on the air conditioner and avoid an increase in energy consumption of the air conditioner caused by frost on the air conditioner. Based on this, the formaldehyde removal demand can be met while improving the energy efficiency of the air conditioner.

[0086] Furthermore, in this embodiment, after the step of acquiring the state parameters, the step further includes: when the state parameters do not meet the target conditions, controlling the heating operation of the air conditioner according to the preset operating parameters.

[0087] In this embodiment, the preset operating parameters include a preset formaldehyde removal temperature, and the heating operation of the air conditioner is controlled according to the preset formaldehyde removal temperature.

[0088] Based on this, it can be preset that when the formaldehyde removal period is completed, the target space can achieve the target formaldehyde removal effect or the deviation from the target formaldehyde removal effect is minimal.

[0089] Further, based on the above embodiment, another embodiment of the control method of the air conditioning system of the present application is proposed. In this embodiment, the first time period is a time period when the outdoor environmental parameters meet the preset conditions, and the second time period is a time period when the outdoor environmental parameters do not meet the preset conditions. The preset conditions may be a target parameter interval or a target quantity relationship or a target size relationship that the outdoor environmental parameters need to reach when the outdoor unit of the air conditioner has a low risk of frost. Figure 3 , before the steps of controlling the air conditioner to operate in heating mode according to the preset operating parameters in the first time period of the preset formaldehyde removal time period, and controlling the air conditioner to shut down or controlling the air conditioner to operate in heating mode according to the first operating parameters in the second time period of the preset formaldehyde removal time period, the method further includes:

[0090] Step S21, when the state parameter meets the target condition, obtaining the outdoor environment data within the preset formaldehyde removal period;

[0091] The outdoor environment data specifically includes outdoor environment parameters corresponding to different times, and the outdoor environment parameters include at least one of the following: outdoor temperature, outdoor enthalpy value, and outdoor humidity.

[0092] The outdoor environmental data may include at least one of the following: predicted environmental data (such as weather forecast data, etc.), environmental data detected in the same period before the preset formaldehyde removal period (such as the same period on the same date, etc.), and environmental data actually detected in the preset formaldehyde removal period.

[0093] S10 may be executed within a preset formaldehyde removal period or before entering a preset formaldehyde removal period.

[0094] Step S22: determining the preset condition according to the outdoor environment data.

[0095] The preset conditions may include conditions that outdoor environmental parameters need to meet and / or conditions that state parameters of the outdoor heat exchanger need to meet.

[0096] Different outdoor environmental data correspond to different preset conditions. The preset conditions are specifically used to distinguish the high and low risks of frost formation of the outdoor unit of the air conditioner during the preset formaldehyde removal period. When the outdoor environmental parameters and / or the state parameters of the outdoor heat exchanger during the period meet the preset conditions, it indicates that the risk of frost formation of the outdoor unit of the air conditioner during the period is low. When the outdoor environmental parameters and / or the state parameters of the outdoor heat exchanger during the period do not meet the preset conditions, it indicates that the risk of frost formation of the outdoor unit of the air conditioner during the period is high.

[0097] In one implementation, the preset conditions include critical parameter values ​​corresponding to outdoor environmental parameters and / or state parameters of an outdoor heat exchanger. The critical parameter values ​​may be determined based on outdoor environmental data, and the critical parameter values ​​may include upper limits and / or lower limits of the outdoor environmental parameters and / or state parameters of the outdoor heat exchanger. Specifically, the critical parameter values ​​here may be calculated by substituting the outdoor environmental data into a preset algorithm model. Alternatively, the critical parameter values ​​may be obtained by filtering the outdoor environmental data after processing the outdoor environmental data according to preset rules.

[0098] In another implementation, the preset condition includes a quantitative relationship that needs to be satisfied between the state parameter of the outdoor heat exchanger and / or the outdoor environment parameter and the corresponding preset parameter threshold, or between the state parameter of the outdoor heat exchanger and the outdoor environment parameter, and the quantitative relationship can be determined according to the outdoor environment data. Specifically, a preset algorithm model between the state parameter of the outdoor heat exchanger and / or the outdoor environment parameter and the preset parameter threshold can be established in advance, and the quantitative relationship here is obtained after the model parameters in the preset algorithm model are determined according to the outdoor environment data.

[0099] In this embodiment, the outdoor environmental parameters include the outdoor environmental temperature, and the preset condition includes that the outdoor environmental temperature is greater than or equal to the critical temperature; and / or, the outdoor environmental parameters include the outdoor environmental enthalpy value, and the preset condition includes that the outdoor environmental enthalpy value is greater than or equal to the critical enthalpy value; and / or, the outdoor environmental parameters include the outdoor environmental humidity, and the preset condition includes that the outdoor environmental humidity is greater than or equal to the critical humidity value.

[0100] In this embodiment, the preset conditions are determined based on the outdoor environmental data within the preset formaldehyde removal period of the target space, and the preset conditions are used to accurately distinguish between the first period of low frost risk and the second period of high frost risk, thereby effectively improving the accuracy of air conditioner operation control within the preset formaldehyde removal period, which is beneficial to ensure the formaldehyde removal effect while further improving the energy efficiency of the air conditioner.

[0101] Further, based on any of the above embodiments, another embodiment of the control method of the air conditioning system of the present application is proposed. In this embodiment, the outdoor environment data includes outdoor environment parameters corresponding to different unit time periods within the preset formaldehyde removal time period, referring to Figure 4 , the step of determining the preset condition according to the outdoor environment data comprises:

[0102] Step S221, accumulating the duration of the unit time period according to the trend of the frost risk of the air conditioner represented by the outdoor environmental parameters from low to high, until the accumulated duration is greater than or equal to the predicted duration, and determining the preset condition according to the outdoor environmental parameters corresponding to the accumulated duration.

[0103] In one implementation, all unit time periods can be arranged in ascending order according to the frost risk represented by the outdoor environmental parameters, and the duration of each unit time period is accumulated in order in the order of arrangement to obtain a cumulative duration. A new cumulative duration is obtained by adding the duration of each unit time period, and it is determined whether the obtained cumulative duration is greater than or equal to the predicted duration. If the cumulative duration is less than the predicted duration, the duration of the next unit time period in the subsequent order is accumulated based on the current cumulative duration; if the cumulative duration is greater than or equal to the predicted duration, the accumulation is stopped, and the preset conditions are determined according to the outdoor environmental parameters corresponding to the current cumulative duration. Specifically, all unit time periods included in the preset formaldehyde removal period are arranged in order from small to large according to the frost risk represented by the outdoor environmental parameters. After sorting, the sub-durations corresponding to the outdoor environmental parameters are arranged in order of duration 1, duration 2, duration 3, duration 4... duration n. The initial cumulative duration is duration 1, and the execution is repeated: when the current cumulative duration is less than the predicted duration, the duration of the unit time period sorted later is accumulated on the basis of the current cumulative duration to obtain a new cumulative duration, until the current cumulative duration is greater than or equal to the predicted duration. The duration of the unit time period used in the accumulation process according to the current cumulative duration can be used as the target sub-duration, and the preset conditions here can be determined according to the outdoor environmental parameters corresponding to all the target sub-durations in the preset formaldehyde removal period.

[0104] In another implementation method, at least two environmental parameter intervals can be set in advance, and different environmental parameter intervals represent different frost risks. The target parameter interval in which each outdoor environmental parameter is located in the at least two environmental parameter intervals is determined, and the duration of the unit time period corresponding to the outdoor environmental parameters contained in each environmental parameter interval is accumulated in sequence according to the frost risk represented by the target parameter interval until the accumulated duration is correct or equal to the predicted duration.

[0105] In this embodiment, through the above method, the cumulative duration can accurately characterize the outdoor environmental conditions corresponding to the low frost risk period within the entire preset formaldehyde removal period. Therefore, the preset conditions are determined based on the outdoor environmental parameters corresponding to the cumulative duration, and accurate distinction between the high and low frost risk periods within the preset formaldehyde removal period can be achieved, thereby further ensuring that the target formaldehyde removal effect is achieved while effectively saving the air conditioner energy consumption.

[0106] Further, in this embodiment, referring to Figure 5 , the trend of the frost risk of the air conditioner represented by the outdoor environmental parameter from low to high accumulates the duration of the unit time period until the accumulated duration is greater than or equal to the predicted duration, and the step of determining the preset condition according to the outdoor environmental parameter corresponding to the accumulated duration includes:

[0107] Step S2211, accumulating the duration of the first unit period of the outdoor temperature and the outdoor humidity in the first combination interval to obtain a first duration, and determining the sum of the first duration and the total duration as a reference duration;

[0108] Specifically, determine whether each outdoor environmental parameter meets the first condition, determine the unit time period corresponding to all outdoor environmental parameters meeting the first condition as the first target unit time period, and take the sum of the durations of all first target unit time periods as the total duration here.

[0109] Step S2212, when the total duration is greater than or equal to the predicted duration, the duration of the unit time periods satisfying the first condition is accumulated in ascending order according to the frost risk indicated by the outdoor environmental parameters, until the first accumulated duration obtained is greater than or equal to the predicted duration, and the preset condition is determined according to the outdoor environmental parameters corresponding to the first accumulated duration;

[0110] The first condition is specifically a preset condition that the outdoor environmental parameters need to reach when the outdoor unit of the air conditioner has a low risk of frost formation. The first condition may include a target parameter interval that the outdoor environmental parameters need to reach when the outdoor unit of the air conditioner has a low risk of frost formation or a target relationship with a preset parameter threshold.

[0111] Specifically, all first target unit time periods are arranged in order from small to large according to the frost risk represented by the outdoor environmental parameters. After the sorting, the duration of the first target unit time periods corresponding to the outdoor environmental parameters are arranged in order of duration 1, duration 2, duration 3, duration 4... duration n. The initial first cumulative duration is duration 1 (that is, the duration of the first target unit time period with the lowest frost risk). Repeat the execution: when the current first cumulative duration is less than the predicted duration, the duration of the first target unit time period that is sorted later is accumulated on the basis of the current first cumulative duration to obtain a new first cumulative duration, until the current first cumulative duration is greater than or equal to the predicted duration. The duration of the first target unit time period used in the accumulation process according to the current first cumulative duration can be used as the first target duration, and the preset conditions here can be determined according to the outdoor environmental parameters corresponding to all the first target durations.

[0112] Step S2213, when the total duration is less than the predicted duration, the duration of the unit time periods that do not meet the first condition is accumulated in ascending order according to the frost thickness represented by the outdoor environmental parameters, until the sum of the second accumulated duration and the total duration is greater than or equal to the predicted duration, and the preset condition is determined according to the outdoor environmental parameters corresponding to the second accumulated duration and the total duration; wherein the first condition indicates that the air conditioner has a low risk of frost.

[0113] When the outdoor environmental parameter corresponding to the unit period does not meet the first condition, it can be considered that the air conditioner in the unit period has a risk of frost. The first unit period is defined as the unit period that does not meet the first condition.

[0114] In one implementation, all first unit time periods can be arranged in ascending order according to the frost thickness indicated by the outdoor environmental parameters, and the duration of each first unit time period can be accumulated in order in the order of arrangement to obtain a second cumulative duration. A new second cumulative duration is obtained by adding the duration of each first unit time period, and it is determined whether the sum of the obtained second cumulative duration and the total duration is greater than or equal to the predicted duration. If the second cumulative duration is less than the predicted duration, the duration of the next first unit time period that is ranked later continues to be accumulated based on the current second cumulative duration. If the sum of the second cumulative duration and the total duration is greater than or equal to the predicted duration, the accumulation is stopped, and the preset conditions are determined based on the outdoor environmental parameters corresponding to the current second cumulative duration and the total duration.

[0115] In another implementation, at least two sub-environmental parameter intervals can be pre-set, and different sub-environmental parameter intervals represent different frost thicknesses. The target sub-parameter interval in which the outdoor environmental parameter corresponding to each first unit time period is located in at least two sub-environmental parameter intervals is determined, and the duration of the first unit time period corresponding to the outdoor environmental parameter contained in each target sub-environmental parameter interval is accumulated from small to large according to the frost thickness represented by the target sub-parameter interval until the sum of the second cumulative duration and the total duration is greater than or equal to the predicted duration, and the preset conditions are determined based on all outdoor environmental parameters corresponding to the second cumulative duration and the total duration.

[0116] In this embodiment, through the above method, it can be ensured that the air conditioner operates with preset operating parameters to input high heating amount into the target space and meet the indoor formaldehyde removal needs. The time period with low frost risk in the preset formaldehyde removal time period can be preferentially utilized. When the indoor formaldehyde removal needs are still not met after all the time periods with low frost risk are utilized, the time period with smaller frost thickness can be effectively utilized, thereby further reducing the frost risk during the formaldehyde removal process of the air conditioner, ensuring the indoor formaldehyde removal effect while further improving the energy efficiency of the air conditioner.

[0117] Further, in this embodiment, the outdoor environmental parameters include outdoor temperature and outdoor humidity, and the first condition includes one of the following conditions:

[0118] The outdoor temperature is greater than an upper limit of a preset temperature range;

[0119] The outdoor temperature is within a preset temperature range, and the outdoor humidity is less than a lower limit of the preset humidity range;

[0120] The preset temperature range and the preset humidity range are preset outdoor environmental parameter ranges when the air conditioner has a high risk of frosting.

[0121] In this embodiment, the preset temperature interval has an upper temperature limit and a lower temperature limit, and the preset humidity interval has an upper humidity limit and a lower humidity limit.

[0122] If the outdoor temperature is greater than or equal to the lower temperature limit and less than or equal to the upper temperature limit, and the outdoor humidity is greater than or equal to the lower humidity limit and less than or equal to the upper humidity limit, the air conditioner can be considered to be in a high frost risk state.

[0123] In this embodiment, when the outdoor temperature is very high or the outdoor temperature is high but the outdoor humidity is very low, the air conditioner can be considered to be in a low frost risk state. The above method can accurately distinguish between high and low frost risks of the air conditioner within the preset formaldehyde removal period.

[0124] In other embodiments, the first condition may also include that the outdoor temperature is higher than a preset humidity and the outdoor humidity is lower than a preset humidity.

[0125] Further, in the present embodiment, the step of accumulating the duration of unit time periods that satisfy the first condition in order from small to large according to the frost risk represented by the outdoor environmental parameters until the obtained first accumulated duration is greater than or equal to the predicted duration includes: accumulating the duration of unit time periods that satisfy the first condition in order from large to small according to the outdoor temperature until the obtained first accumulated duration is greater than or equal to the predicted duration.

[0126] All unit time periods that meet the first condition are arranged in order from high to low according to the outdoor temperature. After sorting, the duration of the unit time periods that meet the first condition corresponding to the outdoor temperature is arranged in order of duration 1, duration 2, duration 3, duration 4... duration n. The initial first cumulative duration is duration 1 (that is, the duration of the unit time period that meets the first condition with the highest outdoor temperature). Repeat the execution: when the current first cumulative duration is less than the predicted duration, the duration of the unit time periods that meet the first condition in the subsequent sorting is accumulated on the basis of the current first cumulative duration to obtain a new first cumulative duration, until the current first cumulative duration is greater than or equal to the predicted duration. The duration of the unit time period that meets the first condition used in the accumulation process according to the current first cumulative duration can be used as the first target duration, and the preset conditions here can be determined according to the outdoor environmental parameters corresponding to all the first target durations.

[0127] In this embodiment, the period with low frost risk within the preset formaldehyde removal period is screened by the outdoor temperature, and the preset conditions are determined based on the outdoor environmental parameters corresponding to the period, which is conducive to further improving the accuracy of distinguishing the first period and the second period, so as to further improve the energy efficiency of the air conditioner's formaldehyde removal process.

[0128] In other embodiments, the corresponding frost risk value can also be calculated based on the outdoor temperature and outdoor humidity of each unit time period that meets the first condition, and the duration of the unit time period that meets the first condition can be accumulated in order from low to high according to the frost risk value until the first accumulated duration obtained is greater than or equal to the predicted duration.

[0129] In other embodiments, the durations of unit time periods satisfying the first condition are accumulated in order from small to large according to the outdoor humidity until a first accumulated duration is obtained that is greater than or equal to the predicted duration.

[0130] Further, in this embodiment, the preset temperature interval includes at least two sub-temperature intervals, the preset humidity interval includes at least two sub-humidity intervals, and the combination interval is defined to include sub-temperature intervals and sub-humidity intervals, and different combination intervals represent different frost thicknesses of the air conditioner. The first unit period is defined as a unit period that does not meet the first condition. Each combination interval includes a sub-temperature interval and a sub-humidity interval. In this embodiment, the step of accumulating the duration of the unit period that does not meet the first condition in the order of the frost thickness represented by the outdoor environmental parameter from small to large until the sum of the second accumulated duration and the total duration is greater than or equal to the predicted duration includes: determining the combination interval where the outdoor temperature and outdoor humidity corresponding to each first unit period are located, and obtaining the first unit period corresponding to each combination interval; accumulating the duration of the first unit period in the order of the frost thickness represented by the combination interval from small to large and the outdoor temperature in the combination interval from large to small, until the sum of the second accumulated duration and the total duration is greater than or equal to the predicted duration.

[0131] Specifically, first accumulate the duration of the first unit time period corresponding to the combination interval with small frost thickness, and stop accumulating when the sum of the second accumulated duration and the total duration is greater than or equal to the predicted duration; when the sum of the second accumulated duration and the total duration is less than the predicted duration, further accumulate the duration of the first unit time period corresponding to the combination interval with large frost thickness until the sum of the second accumulated duration and the total duration is greater than or equal to the predicted duration.

[0132] In this embodiment, different combination intervals include a first preset interval, a second preset interval, and a third preset interval, the frost thickness represented by the first preset interval is less than the frost thickness represented by the second preset interval, and the frost thickness represented by the second preset interval is less than the frost thickness represented by the third preset interval. Determine the combination intervals in which the outdoor temperature and outdoor humidity corresponding to each first unit time period exist in all combination intervals, determine the first unit time period corresponding to the outdoor temperature and outdoor humidity in the first combination interval as the first target time period, determine the first unit time period corresponding to the outdoor temperature and outdoor humidity in the second combination interval as the second target time period, and determine the first unit time period corresponding to the outdoor temperature and outdoor humidity in the third combination interval as the third target time period.

[0133] Determine the sum of the durations of all first target time periods as the first duration. When the sum of the first duration and the total duration is greater than or equal to the predicted duration, accumulate the duration of the first target time period in descending order according to the outdoor temperature until the sum of the second accumulated duration and the total duration is greater than or equal to the predicted duration. Specifically, arrange all first target time periods in descending order according to the outdoor temperature, accumulate the durations of each first target time period in order according to the arrangement order, and obtain the second accumulated duration. Each time the duration of a first target time period is accumulated, a new second accumulated duration is obtained. Determine whether the sum of the obtained second accumulated duration and the total duration is greater than or equal to the predicted duration. If the sum of the second accumulated duration and the total duration is less than the predicted duration, then continue to accumulate the duration of the next first target time period that is ranked later based on the current second accumulated duration; if the sum of the second accumulated duration and the total duration is greater than or equal to the predicted duration, stop accumulating, and determine the preset conditions based on the outdoor environmental parameters corresponding to the currently obtained second accumulated duration and the total duration.

[0134] When the sum of the first duration and the total duration is less than the predicted duration, the sum of the durations of all second target time periods is determined to be the second duration.

[0135] When the sum of the first duration, the second duration and the total duration is greater than or equal to the predicted duration, the duration of the second target period is accumulated according to the order of outdoor temperature from large to small, until the sum of the accumulated duration, the first duration and the total duration is greater than or equal to the predicted duration, and the second accumulated duration includes the accumulated duration and the first duration here. Specifically, all second target periods are arranged in order from large to small according to the outdoor temperature, and the duration of each second target period is accumulated in order according to the arrangement order, and the sum of the accumulated duration and the first duration is obtained as the second accumulated duration. Each time the duration of a second target period is accumulated, a new second accumulated duration is obtained, and it is determined whether the sum of the obtained second accumulated duration and the total duration is greater than or equal to the predicted duration. If the sum of the second accumulated duration and the total duration is less than the predicted duration, the duration of the next second target period in the next order is accumulated based on the current second accumulated duration; if the sum of the second accumulated duration and the total duration is greater than or equal to the predicted duration, the accumulation is stopped, and the preset conditions are determined according to the outdoor environmental parameters corresponding to the current second accumulated duration and the total duration.

[0136] When the sum of the first duration, the second duration and the total duration is less than the predicted duration, the sum of the durations of all third target time periods is determined to be the third duration. When the sum of the first duration, the second duration and the third duration is greater than or equal to the predicted duration, the duration of the third target time period is accumulated in descending order according to the outdoor temperature until the sum of the accumulated duration, the first duration, the second duration and the total duration is greater than or equal to the predicted duration, and the second accumulated duration includes the accumulated duration, the first duration and the second duration here. Specifically, all third target time periods are arranged in order from large to small according to the outdoor temperature, and the duration of each third target time period is accumulated in order according to the arrangement order, and the sum of the accumulated duration, the first duration and the second duration is the second accumulated duration. A new second accumulated duration is obtained by adding the duration of each third target time period, and it is determined whether the sum of the obtained second accumulated duration and the total duration is greater than or equal to the predicted duration. If the sum of the second accumulated duration and the total duration is less than the predicted duration, the duration of the next third target time period that is ranked later is continued to be accumulated on the basis of the current second accumulated duration; if the sum of the second accumulated duration and the total duration is greater than or equal to the predicted duration, the accumulation is stopped, and the preset conditions are determined according to the outdoor environmental parameters corresponding to the current second accumulated duration and the total duration.

[0137] For example, assuming that the preset temperature interval is [-10, 10], and the preset humidity interval is [70%, 100%], by drawing a grid, the prediction time is 300h, and the total time is 250h. The preset temperature interval and the preset humidity interval are divided into three combination intervals of a, b, and c, as follows:

[0138] 70％ 71％ 72％ 73％ 、、、 99％ 100％ 10℃ X11(a) X12(a) X13(a) X14(a) 、、、(b) X1n-1(b) X1n(b) 9℃ X21(a) X22(a) X23(a) X24(a) 、、、(b) X2n-1(b) X2n(b) 、、、 、、、(a) 、、、(a) 、、、(b) 、、、(b) 、、、(c) 、、、(c) 、、、(c) -10℃ Xn1(b) Xn2(b) Xn3(b) Xn4(b) 、、、(c) Xnn-1(c) Xnn(c)

[0139] If 50h is less than or equal to the sum of the unit time periods in area a, the indoor temperatures in area a are accumulated from high to low for the corresponding unit time periods. When the accumulated time reaches 50h, the preset conditions are determined based on the outdoor temperature and / or outdoor humidity corresponding to the unit time period used for the accumulated time.

[0140] If 50h is less than or equal to the sum of the unit time periods in area a and area b, the duration of the corresponding unit time periods of the indoor temperature in area b will be accumulated from high to low. When the sum of the accumulated duration and the duration of all unit time periods in area a reaches 50h, the preset conditions will be determined based on the outdoor temperature and / or outdoor humidity corresponding to the unit time period contained in the accumulated duration and the duration of all unit time periods in area a.

[0141] If 50h is less than or equal to the sum of the unit time periods in areas a, b and c, the duration of the corresponding unit time periods of the indoor temperature in area c will be accumulated from high to low. When the sum of the accumulated duration and the duration of all unit time periods in areas a and b reaches 50h, the preset conditions will be determined based on the outdoor temperature and / or outdoor humidity corresponding to the unit time period contained in the accumulated duration and the duration of all unit time periods in areas a and b.

[0142] In this embodiment, the above method is helpful to accurately screen out the period with lower frost risk within the preset formaldehyde removal period, and determine the preset conditions based on the outdoor environmental parameters corresponding to the period, which is helpful to further improve the accuracy of distinguishing the first period and the second period, so as to further improve the energy efficiency of the air conditioner's formaldehyde removal process.

[0143] Furthermore, in this embodiment, when the state parameter meets the target condition, before the step of obtaining the outdoor environment data within the preset formaldehyde removal period, it also includes: dividing the combined interval into the at least two sub-temperature intervals and the at least two sub-humidity intervals according to the defrost cycle.

[0144] The defrost cycle is specifically the duration of the heating operation of the air conditioner between two adjacent defrost operations. The defrost cycle is negatively correlated with the frost thickness of the air conditioner. The shorter the defrost cycle, the thicker the frost.

[0145] In this embodiment, dividing the combined intervals in the above manner is beneficial to further improve the accuracy of distinguishing the first time period from the second time period, so as to further improve the energy efficiency of the air conditioner during the formaldehyde removal process.

[0146] Further, in this embodiment, the outdoor environmental parameters include outdoor temperature, and the step of determining the preset conditions based on the outdoor environmental parameters corresponding to the first cumulative duration includes: determining the lowest temperature among all outdoor temperatures corresponding to the first cumulative duration as the critical temperature, and the preset conditions include that the outdoor environmental temperature is greater than or equal to the critical temperature.

[0147] Further, in this embodiment, the outdoor environmental parameters include outdoor temperature, and the step of determining the preset condition based on the outdoor environmental parameters corresponding to the second cumulative duration and the total duration includes: determining the lowest temperature among all outdoor temperatures corresponding to the second cumulative duration and the total duration as the critical temperature, and the preset condition includes that the outdoor environmental temperature is greater than or equal to the critical temperature.

[0148] Based on this, the low defrost risk period and the high defrost risk period within the preset formaldehyde removal period are accurately distinguished through the critical temperature, thereby effectively improving the energy efficiency of the air conditioner during the formaldehyde removal process.

[0149] In other embodiments, the highest humidity among all outdoor humidities corresponding to the first cumulative duration can be determined as the critical humidity, and the lowest temperature among all outdoor humidities corresponding to the first cumulative duration can be determined as the critical temperature. The preset conditions include that the outdoor ambient temperature is greater than or equal to the critical temperature and the outdoor ambient humidity is less than or equal to the critical humidity.

[0150] In other embodiments, the highest humidity among all outdoor humidities corresponding to the second cumulative duration and the total duration can be determined as the critical humidity, and the lowest temperature among all outdoor humidities corresponding to the second cumulative duration and the total duration can be determined as the critical temperature. The preset conditions include that the outdoor ambient temperature is greater than or equal to the critical temperature and the outdoor ambient humidity is less than or equal to the critical humidity.

[0151] Further, based on any of the above embodiments, another embodiment of the control method of the air conditioning system of the present application is proposed. In this embodiment, the state parameter includes the predicted duration and the duration of the preset formaldehyde removal period, the air conditioning system also includes a fresh air fan, the preset state includes the ventilation operation of the fresh air fan, and the ventilation operation of the fresh air fan during the preset formaldehyde removal period, and the step of obtaining the predicted duration includes: obtaining the formaldehyde concentration of the target space and the ventilation operation parameters of the fresh air fan; determining the predicted duration according to the formaldehyde concentration, the ventilation operation parameters and the preset operation parameters.

[0152] The formaldehyde concentration can be specifically detected by the above-mentioned formaldehyde detection module.

[0153] Different formaldehyde concentrations, ventilation operating parameters and preset operating parameters correspond to different prediction times.

[0154] The correspondence between formaldehyde concentration, ventilation operation parameters, preset operation parameters and prediction duration can be preset, and the correspondence may include calculation formulas, training models, etc. Based on the correspondence, the prediction duration corresponding to the current formaldehyde concentration, ventilation operation parameters and preset operation parameters can be determined.

[0155] The corresponding relationship here can be a preset fixed corresponding relationship, or it can be different according to the actual operating conditions of the air conditioning system. In this embodiment, the space size parameters of the target space are obtained; the target relationship between the formaldehyde concentration, the ventilation operating parameters, the preset operating parameters and the predicted duration is obtained according to the space size parameters; the predicted duration corresponding to the formaldehyde concentration, the ventilation operating parameters and the preset operating parameters is determined according to the target relationship. The space size parameters include at least one of the following: volume, length, width and height, building area, ground area, etc. Different space size parameters correspond to different target relationships.

[0156] In this embodiment, the relationship between formaldehyde concentration, ventilation operation parameters, preset operation parameters, and space size parameters and the predicted duration can be seen in the following formula:

[0157] t=[(V*C*Q G ) / (V G *C G *Q)]*t G ;

[0158] Among them, V is the volume of the target space, C is the formaldehyde concentration in the target space, Q is the ventilation volume of the fresh air fan, and Q G is the standard ventilation volume of the fresh air fan, C G is the standard formaldehyde concentration, V G The standard ventilation volume, standard formaldehyde concentration and standard volume can be determined according to preset operating parameters. If the preset operating parameters are different, the standard ventilation volume, standard formaldehyde concentration and / or standard volume will be different.

[0159] It should be noted that the formula here is only to more intuitively show the relationship between the above parameters and the predicted duration, and is not used to limit the method of determining the predicted duration. Other forms of corresponding relationships between the parameters that satisfy the relationship reflected by the above formula may also be within the scope of protection of the present invention.

[0160] In this embodiment, the above method is helpful to improve the accuracy of the predicted duration, thereby further ensuring the accuracy of the air conditioner control within the preset formaldehyde removal period, so as to further ensure the formaldehyde removal effect while saving air conditioning energy efficiency.

[0161] In addition, an embodiment of the present invention further proposes a storage medium on which a control program of an air conditioning system is stored. When the control program of the air conditioning system is executed by a processor, the relevant steps of any embodiment of the control method of the air conditioning system are implemented.

[0162] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0163] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0164] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, air conditioning system, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0165] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A control method for an air conditioning system, It is characterized in that The air conditioning system includes an air conditioner, and the control method of the air conditioning system includes the following steps: Acquire a state parameter, wherein the state parameter represents a relationship between a duration of a preset formaldehyde removal period of a target space and a predicted duration of formaldehyde removal of the target space under a preset state, wherein the preset state includes controlling the heating operation of the air conditioner with preset operating parameters; When the state parameter meets the target condition, the air conditioner is controlled to operate in heating mode according to the preset operating parameter in a first period of the preset formaldehyde removal period, and the air conditioner is controlled to stop or to operate in heating mode according to the first operating parameter in a second period of the preset formaldehyde removal period; Among them, the target condition indicates that the duration of the preset formaldehyde removal period is greater than the predicted duration, the frost risk of the air conditioner corresponding to the first period is less than the frost risk of the air conditioner corresponding to the second period, and the indoor heat exchanger temperature of the air conditioner when operating with the preset operating parameters is higher than the indoor heat exchanger temperature of the air conditioner when operating with the first operating parameters.

2. The control method of the air conditioning system according to claim 1, It is characterized in that The first time period is a time period when the outdoor environmental parameters meet the preset conditions, and the second time period is a time period when the outdoor environmental parameters do not meet the preset conditions. Before the steps of controlling the air conditioner to heat according to the preset operating parameters in the first time period of the preset formaldehyde removal time period, and controlling the air conditioner to shut down or controlling the air conditioner to heat according to the first operating parameters in the second time period of the preset formaldehyde removal time period, the method further includes: When the state parameter meets the target condition, obtaining the outdoor environment data within the preset formaldehyde removal period; The preset condition is determined according to the outdoor environment data.

3. The control method of the air conditioning system according to claim 2, It is characterized in that The outdoor environment data includes outdoor environment parameters corresponding to different unit time periods within the preset formaldehyde removal time period, and the step of determining the preset condition according to the outdoor environment data includes: The duration of the unit time period is accumulated according to the trend of the frost risk of the air conditioner represented by the outdoor environmental parameters from low to high, until the accumulated duration is greater than or equal to the predicted duration, and the preset condition is determined according to the outdoor environmental parameters corresponding to the accumulated duration.

4. The control method of the air conditioning system according to claim 3, It is characterized in that The step of accumulating the duration of the unit time period according to the trend of the frost risk of the air conditioner from low to high represented by the outdoor environmental parameter until the accumulated duration is greater than or equal to the predicted duration, and determining the preset condition according to the outdoor environmental parameter corresponding to the accumulated duration comprises: The total duration of the unit time period in which the accumulated outdoor environmental parameters meet the first condition; When the total duration is greater than or equal to the predicted duration, the duration of the unit time periods satisfying the first condition is accumulated in ascending order according to the frost risk indicated by the outdoor environmental parameter until a first accumulated duration is greater than or equal to the predicted duration, and the preset condition is determined according to the outdoor environmental parameter corresponding to the first accumulated duration; When the total duration is less than the predicted duration, the duration of the unit time period that does not meet the first condition is accumulated in ascending order according to the frost thickness represented by the outdoor environment parameter until the sum of the second accumulated duration and the total duration is greater than or equal to the predicted duration, and the preset condition is determined according to the outdoor environment parameters corresponding to the second accumulated duration and the total duration; The first condition indicates that the frost risk of the air conditioner is low.

5. The control method of the air conditioning system according to claim 4, It is characterized in that The outdoor environmental parameters include outdoor temperature and outdoor humidity, and the first condition includes one of the following conditions: The outdoor temperature is greater than an upper limit of a preset temperature range; The outdoor temperature is within a preset temperature range, and the outdoor humidity is less than a lower limit of the preset humidity range; The preset temperature range and the preset humidity range are preset outdoor environmental parameter ranges when the air conditioner has a high risk of frosting.

6. The control method of the air conditioning system according to claim 5, It is characterized in that The step of accumulating the duration of the unit time periods satisfying the first condition in ascending order according to the frost risk represented by the outdoor environmental parameter until the first accumulated duration obtained is greater than or equal to the predicted duration comprises: The durations of the unit time periods satisfying the first condition are accumulated in order from large to small according to the outdoor temperature until a first accumulated duration is obtained that is greater than or equal to the predicted duration.

7. The control method of the air conditioning system according to claim 5, It is characterized in that The preset temperature interval includes at least two sub-temperature intervals, the preset humidity interval includes at least two sub-humidity intervals, the combination interval is defined to include a sub-temperature interval and a sub-humidity interval, different combination intervals represent different frost thicknesses of the air conditioner, a first unit period is defined as a unit period that does not meet the first condition, and the step of accumulating the duration of the unit period that does not meet the first condition in order from small to large according to the frost thickness represented by the outdoor environmental parameter until the sum of the second accumulated duration and the total duration is greater than or equal to the predicted duration includes: Determine the combined interval of the outdoor temperature and the outdoor humidity corresponding to each first unit time period, and obtain the first unit time period corresponding to each combined interval; The duration of the first unit period is accumulated according to the order of frost thickness characterized by the combined intervals from small to large and the order of outdoor temperature in the combined intervals from large to small, until the sum of the obtained second accumulated duration and the total duration is greater than or equal to the predicted duration.

8. The control method of the air conditioning system according to claim 7, It is characterized in that When the state parameter meets the target condition, before the step of obtaining the outdoor environment data within the preset formaldehyde removal period, the method further includes: The combined interval is divided into the at least two sub-temperature intervals and the at least two sub-humidity intervals according to the defrosting cycle.

9. The control method of the air conditioning system according to claim 4, It is characterized in that The outdoor environmental parameter includes outdoor temperature, and the step of determining the preset condition according to the outdoor environmental parameter corresponding to the first accumulated time includes: The lowest temperature among all outdoor temperatures corresponding to the first accumulated time is determined as a critical temperature, and the preset condition includes that the outdoor ambient temperature is greater than or equal to the critical temperature.

10. The control method of the air conditioning system according to claim 4, It is characterized in that The outdoor environmental parameter includes an outdoor temperature, and the step of determining the preset condition according to the outdoor environmental parameter corresponding to the second accumulated duration and the total duration includes: The lowest temperature among all outdoor temperatures corresponding to the second accumulated duration and the total duration is determined as a critical temperature, and the preset condition includes that the outdoor ambient temperature is greater than or equal to the critical temperature.

11. The control method of the air conditioning system according to any one of claims 1 to 10, It is characterized in that The state parameter includes the predicted duration and the duration of the preset formaldehyde removal period, the air conditioning system also includes a fresh air fan, the preset state includes the fresh air fan ventilation operation, and the fresh air fan ventilation operation during the preset formaldehyde removal period, and the step of obtaining the predicted duration includes: Obtaining the formaldehyde concentration of the target space and the ventilation operation parameters of the fresh air fan; The predicted duration is determined according to the formaldehyde concentration, the ventilation operation parameter and the preset operation parameter.

12. The control method of the air conditioning system according to claim 11, It is characterized in that The step of determining the predicted duration according to the formaldehyde concentration, the ventilation operation parameter and the preset operation parameter comprises: Acquire spatial dimension parameters of the target space; Acquire the target relationship among the formaldehyde concentration, the ventilation operation parameter, the preset operation parameter and the predicted duration according to the space size parameter; The formaldehyde concentration, the ventilation operating parameters, and the predicted duration corresponding to the preset operating parameters are determined according to the target relationship.

13. The control method of the air conditioning system according to any one of claims 1 to 10, It is characterized in that After the step of obtaining the state parameters, the method further includes: When the state parameter does not meet the target condition, the air conditioner is controlled to perform heating operation according to the preset operation parameter.

14. The control method of an air conditioning system according to any one of claims 1 to 10, It is characterized in that The state parameters include the predicted duration and the duration of the preset formaldehyde removal period, and the target condition includes that the duration of the preset formaldehyde removal period is greater than the predicted duration; Alternatively, the state parameters include the target formaldehyde removal temperature required in the preset formaldehyde removal period and the preset formaldehyde removal temperature of the air conditioner under the preset state, and the target condition includes that the preset formaldehyde removal temperature is greater than the target formaldehyde removal temperature.

15. An air conditioning system, It is characterized in that The air conditioning system includes an air conditioner and a control device, the air conditioner is connected to the control device, and the control device includes: a memory, a processor, and a control program of the air conditioning system stored in the memory and executable on the processor, and when the control program of the air conditioning system is executed by the processor, the steps of the control method of the air conditioning system as described in any one of claims 1 to 14 are implemented.

16. A storage medium, It is characterized in that The storage medium stores a control program of an air conditioning system, and when the control program of the air conditioning system is executed by a processor, the steps of the control method of the air conditioning system according to any one of claims 1 to 14 are implemented.

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