Air conditioner, control method thereof and readable storage medium

Abstract

The invention provides an air conditioner, a control method thereof and a readable storage medium, and the air conditioner control method comprises the steps that a first refrigerant concentration value obtained through detection of a first refrigerant concentration sensor and a second refrigerant concentration value obtained through detection of a second refrigerant concentration sensor are obtained, and a first preset concentration value is determined according to refrigerant type data of the air conditioner; if any one of the first refrigerant concentration value and the second refrigerant concentration value is larger than or equal to a first preset concentration value, refrigerant leakage is determined; if it is determined that the refrigerant leaks, the operation duration of the fresh air fan is calculated and generated according to the space size data, and the space size data is calculated and generated according to the refrigerant type data. The air conditioner and the readable storage medium can realize the air conditioner control method. According to the invention, for the cabinet, refrigerant leakage detection and processing of the ventilation quantity are considered according to the refrigerant type, and the detection accuracy and the ventilation processing effect are improved.

Description

Technical Field

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

[0002] In existing air conditioning control methods for refrigerant leak detection and processing, most of them compare the refrigerant concentration value detected by the refrigerant concentration sensor with a preset value, and determine whether there is a refrigerant leak based on the judgment result. If so, measures such as increasing the indoor fan speed and controlling the input of fresh air are taken.

[0003] Existing air conditioning control methods for detecting and treating refrigerant leaks have the following problems: First, existing air conditioning control methods are mostly targeted at wall-mounted units, but cabinet units have different structures, so using detection methods for wall-mounted units may result in missed detections. Second, in the ventilation measures after the leakage is discovered, the operation of the fresh air fan is generally controlled by preset conditions such as duration and wind speed. The set ventilation volume not only does not take into account the size of the space, but also does not take into account the different densities of different refrigerants, resulting in a mismatch between the ventilation volume and the actual required ventilation volume. Summary of the Invention

[0004] A first object of the present invention is to provide an air conditioning control method for detecting and processing refrigerant leaks in a cabinet unit and taking ventilation volume into consideration according to the type of refrigerant.

[0005] A second object of the present invention is to provide an air conditioner that implements the above-mentioned air conditioner control method.

[0006] A third object of the present invention is to provide a readable storage medium for implementing the above-mentioned air conditioning control method.

[0007] The air conditioning control method provided by the first purpose of the present invention includes detecting and obtaining a refrigerant concentration value, and judging whether the refrigerant has leaked based on a comparison result between the refrigerant concentration value and a first preset concentration value; controlling the operation of the fresh air fan when refrigerant leakage is determined; the step of detecting and obtaining the refrigerant concentration value includes: obtaining a first refrigerant concentration value obtained by a first refrigerant concentration sensor and a second refrigerant concentration value obtained by a second refrigerant concentration sensor, the first refrigerant concentration sensor being arranged above a water receiving pan of a heat exchanger, and the second refrigerant concentration sensor being arranged below the water receiving pan of a heat exchanger; the step of judging whether the refrigerant has leaked based on a comparison result between the refrigerant concentration value and the first preset concentration value includes: determining a first preset concentration value based on the refrigerant type data of the air conditioner; if any one of the first refrigerant concentration value and the second refrigerant concentration value is greater than or equal to the first preset concentration value, determining that the refrigerant has leaked; if refrigerant leakage is determined, the step of controlling the operation of the fresh air fan includes: calculating and generating the operation time of the fresh air fan based on the space dimension data, the space dimension data being calculated and generated based on the refrigerant type data.

[0008] It can be seen from the above scheme that the present invention is aimed at the structural design of the cabinet unit. The common leakage locations of the cabinet unit are the heat exchanger above the water tray and the connecting pipe below the water tray. The two areas are independent of each other and almost airtight, so the first refrigerant concentration sensor and the second refrigerant concentration sensor are respectively set for monitoring. For the position of the heat exchanger above the water tray, since it is installed vertically, according to the density characteristics of the refrigerant, if the density is lower than the air density, the first refrigerant concentration sensor is set above the heat exchanger, otherwise the first refrigerant concentration sensor is set below the heat exchanger to ensure that leaks at different positions of the heat exchanger can be effectively detected; the setting position of the second refrigerant concentration sensor below the water tray is similarly selected according to the refrigerant density. In addition, the present invention also considers calculating the running time of the fresh air fan based on the spatial dimension data of the site and the refrigerant type data to ensure that the final ventilation volume can cope with the leakage problem of the current type of refrigerant in the current site. Different refrigerants have different densities, some denser than air, some less dense than air. Refrigerants with a density greater than air will gradually sink to the ground if leaked, while those with a density less dense than air will gradually rise to the ceiling. Refrigerants with a density close to air will gradually mix with the air if leaked. The ventilation height for different rooms is set based on the refrigerant density. Because the fresh air outlet is located at a lower position, dense refrigerants tend to be diluted after sinking, while light refrigerants tend to be difficult to dilute after leaking. Determining the ventilation height in the space dimensions based on the refrigerant density ensures adequate ventilation in the room.

[0009] A further solution is that if any one of the first refrigerant concentration value and the second refrigerant concentration value is greater than or equal to the first preset concentration value, the step of determining refrigerant leakage includes determining a first leakage situation if the first refrigerant concentration value is greater than or equal to the first preset concentration value; determining a second leakage situation if the first refrigerant concentration value is less than the first preset concentration value and the second refrigerant concentration value is greater than or equal to the first preset concentration value; if refrigerant leakage is determined, the step of controlling the operation of the fresh air fan includes: if the first leakage situation is determined, controlling the operation of the fresh air fan and controlling the operation of the indoor fan; if the second leakage situation is determined, controlling the operation of the fresh air fan and controlling the indoor fan to stop running.

[0010] As can be seen from the above, regardless of the relationship between the second refrigerant concentration value and the first preset concentration value, when the first refrigerant concentration value is greater than or equal to the first preset concentration value, it is determined that the air conditioner indoor heat exchanger has a leak. At this time, the controller controls the indoor fan to operate and controls the fresh air fan to operate. The reason for controlling the operation of the indoor fan is that the airflow of the indoor fan can blow away the refrigerant leaking from the indoor heat exchanger to prevent its accumulation. The indoor fan continues to operate until the fresh air fan stops operating. However, if only the first refrigerant concentration value is less than the first preset concentration value and the second refrigerant concentration value is greater than or equal to the first preset concentration value, the leak only occurs at the air conditioner connecting pipe location. At this time, the controller controls the indoor fan to not operate and controls the fresh air fan to operate. The reason for controlling the indoor fan to not operate is that the space where the indoor fan is located is separated from the connecting pipe location, and the airflow of the indoor fan cannot blow away the refrigerant leaking from the connecting pipe.

[0011] A further solution is that if any one of the first refrigerant concentration value and the second refrigerant concentration value is greater than or equal to the first preset concentration value, in the step of determining refrigerant leakage: the refrigerant density is determined according to the refrigerant type data; if the refrigerant density is greater than the air density: when the first refrigerant concentration value is greater than or equal to the first preset concentration value, and the second refrigerant concentration value is greater than or equal to the second preset concentration value, the refrigerant leakage is determined, and the second preset concentration value is less than the first preset concentration value; if the refrigerant density is less than the air density: when the second refrigerant concentration value is greater than or equal to the first preset concentration value, and the first refrigerant concentration value is greater than or equal to the second preset concentration value, the refrigerant leakage is determined.

[0012] As can be seen from the above, this setting is mainly combined with the two refrigerant concentration sensors respectively set above and below the water tray, which can realize the anti-false alarm function, ensuring safety while guaranteeing the user experience. The second preset concentration value is a lower value. Although the area where the heat exchanger is located and the area where the connecting pipe is located (the upper and lower areas of the water tray) are almost airtight, the refrigerant can penetrate slightly into the other area through some wiring positions or gaps. Therefore, when a high leakage concentration is detected in one area, it can be combined with whether the leakage concentration in another area reaches the preset lower value to comprehensively judge whether there is a real leakage. This setting mainly takes into account the impact of long usage time and aging on detection sensitivity to avoid false alarms. Of course, this function can be manually turned on or off by the user according to the current situation.

[0013] A further solution is that, if refrigerant leakage is determined, after the step of controlling the operation of the fresh air fan, it also includes controlling the operation of the fresh air fan to calculate the operating time, and then judging whether the first refrigerant concentration value and the second refrigerant concentration value are both lower than the second preset concentration value; if so, controlling the fresh air fan to stop running.

[0014] As can be seen from the above, after calculating the operating time to meet the ventilation volume demand, the fresh air fan runs accordingly to determine whether the concentrations in the two areas are lower than the preset lower value. If so, the processing is completed and the fresh air fan is controlled to stop running.

[0015] Another further solution is to calculate and generate the operating time of the fresh air fan based on the space dimension data. The step of calculating and generating the space dimension data based on the refrigerant type data includes calculating and generating the space dimension data based on the indoor area and ventilation height.

[0016] As can be seen from the above, by setting space dimension data such as room area and floor height, the physical dimensions of the space where the air conditioner is located are fully considered. According to the space dimension data, the operating time required to meet the required fresh air volume can be calculated. Under this setting, it can ensure that the fresh air fan introduces sufficient fresh air, avoid the fan working for too long, reduce energy consumption, and reduce noise generation.

[0017] A further solution is to determine the refrigerant density based on the refrigerant type data, and determine the ventilation height based on the relationship between the refrigerant density and the air density.

[0018] A further solution is that the step of determining the ventilation height based on the relationship between the refrigerant density and the air density includes: if the refrigerant density is greater than the upper limit value of the floating range based on the air density, the ventilation height is determined to be a first preset height; if the refrigerant density is within the floating range based on the air density, the ventilation height is determined to be a second preset height; if the refrigerant density is less than the lower limit value of the floating range based on the air density, the ventilation height is determined to be a third preset height; the first preset height is greater than the second preset height, and the second preset height is greater than the third preset height.

[0019] As can be seen from the above, different refrigerants have different densities, some greater than air and some less than air. Refrigerants with a density greater than air will gradually sink to the ground after a leak, while refrigerants with a density less than air will gradually float to the ceiling after a leak. Refrigerants with a density close to that of air will gradually mix with the air after a leak. The ventilation height for different rooms is set according to the refrigerant density. Since the fresh air outlet is located at a lower position, the refrigerant with a high density is easily diluted by the fresh air after sinking, so the fresh air is required to reach a lower position, and the ventilation volume is required to be smaller. The refrigerant with a low density will float after a leak and is relatively difficult to dilute, so the fresh air is required to reach a higher position and a larger ventilation volume. Determining the ventilation height in the space size data based on the refrigerant density can ensure adequate ventilation in the room.

[0020] A further solution is that the first preset height is less than the preset indoor height; the second preset height is equal to twice the preset indoor height; and the third preset height is greater than or equal to three times the preset indoor height.

[0021] As can be seen from the above, the preset indoor height can be the system default floor height value, such as 3.3m, or it can be filled in by the user according to the floor height of the space where he is located; when the refrigerant density is less than the air density, the ventilation height should be several times the preset indoor height; when the refrigerant density is greater than the air density, the ventilation height can be a smaller value range such as 1m to 2m.

[0022] To achieve the second purpose of the present invention, the air conditioner of the present invention includes a circuit board, which is provided with a processor and a memory. The memory stores a computer program, and when the computer program is executed by the processor, each step of the above-mentioned air conditioner control method is implemented.

[0023] To achieve the third objective of the present invention, a computer program is stored on a readable storage medium of the present invention, and when the computer program is executed by a processor, each step of the above-mentioned air conditioning control method is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of an air conditioner embodiment of the present invention.

[0025] Figure 2 This is a flowchart of an embodiment of the air conditioning control method of the present invention. DETAILED DESCRIPTION

[0026] Air conditioner and control method thereof The air conditioner of the present invention includes a processor and a memory, such as a single chip microcomputer including a central processing unit. In addition, the processor is used to implement all steps of the air conditioner control method of the present invention when executing a computer program stored in the memory.

[0027] The processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0028] The memory primarily includes a program storage area and a data storage area. The program storage area can store an operating system and at least one application required for a function (such as sound playback or image playback); the data storage area can store data generated based on the use of the handheld terminal (such as audio data and a phone book). Furthermore, the memory can include high-speed random access memory (RAM) and non-volatile memory, such as a hard disk, internal memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, at least one disk storage device, a flash memory device, or other volatile solid-state storage device.

[0029] See also Figure 1 The air conditioner of this embodiment includes an indoor unit, which is a cabinet unit. The cabinet unit includes a heat exchanger 1, a connecting pipe 2, a water tray 3, a first refrigerant concentration sensor 41, a second refrigerant concentration sensor 42, a fresh air blower 5, and an indoor fan (not shown). The cabinet unit includes two upper and lower areas separated by the water tray 3, and there is almost no ventilation between the upper and lower areas. Specifically, the two areas can only be ventilated through some gaps or wiring positions. The heat exchanger 1 and the indoor fan are arranged in the first area above the water tray 3. The connecting pipe 2 is also a refrigerant pipe in the compression system. The connecting pipe 2 and the fresh air blower 5 are both located in the second area below the water tray 3. The first refrigerant concentration sensor 41 is arranged in the first area and is located near the heat exchanger 1. The second refrigerant concentration sensor 42 is arranged in the second area and is located near the connecting pipe 2.

[0030] Furthermore, depending on the type of refrigerant, the first refrigerant concentration sensor 41 and the second refrigerant concentration sensor 42 can be selected to be located in positions that are more conducive to accurate detection. If the refrigerant density is less than the atmospheric density, the refrigerant tends to float upward, and thus the first refrigerant concentration sensor 41 can be located in the upper portion of the first area, above or near the upper portion of the heat exchanger 3; the second refrigerant concentration sensor 42 can be located in the upper portion of the second area, above or near the upper portion of the connecting pipe 2. If the refrigerant density is greater than the atmospheric density, the refrigerant tends to sink, and thus the first refrigerant concentration sensor 41 can be located in the lower portion of the first area, below or near the lower portion of the heat exchanger 3; the second refrigerant concentration sensor 42 can be located in the lower portion of the second area, below or near the lower portion of the connecting pipe 2.

[0031] In addition, the air conditioner of the present invention includes a processor and a memory, such as a single chip microcomputer including a central processing unit, etc. Moreover, the processor is used to implement all steps of the air conditioner control method of the present invention when executing the computer program stored in the memory.

[0032] The processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0033] The memory primarily includes a program storage area and a data storage area. The program storage area can store an operating system and at least one application required for a function (such as sound playback or image playback); the data storage area can store data generated based on the use of the handheld terminal (such as audio data and a phone book). Furthermore, the memory can include high-speed random access memory (RAM) and non-volatile memory, such as a hard disk, internal memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, at least one disk storage device, a flash memory device, or other volatile solid-state storage device.

[0034] See also Figure 1 and Figure 2 The air conditioning control method of this embodiment includes the following steps: The air conditioning control system first executes step S1 to obtain the first refrigerant concentration value A1 obtained by the first refrigerant concentration sensor 41 in real time and the second refrigerant concentration value A2 obtained by the second refrigerant concentration sensor 42 in real time. The first refrigerant concentration sensor 41 reflects the refrigerant concentration in the area above the water receiving pan 3 and where the heat exchanger 1 is located, and the second refrigerant concentration sensor 42 reflects the refrigerant concentration in the area below the water receiving pan 3 and where the connecting pipe 2 is located.

[0035] Then, step S2 is executed to determine whether the false alarm prevention mode is enabled. Whether the false alarm prevention mode is enabled is determined by the user's setting instructions. Regardless of whether the false alarm prevention mode is enabled, the refrigerant leakage is determined based on the comparison result of the refrigerant concentration value with the preset concentration value.

[0036] If the result of step S2 is no, step S3 is executed to determine whether any one of the first refrigerant concentration value A1 and the second refrigerant concentration value A2 is greater than or equal to the first preset concentration value A1. H .

[0037] If the judgment result of step S3 is no, the judgment cycle continues; if the judgment result of step S3 is yes, step S4 is executed to determine whether the first refrigerant concentration value A1 is less than the first preset concentration value A H The second refrigerant concentration value A2 is greater than or equal to the first preset concentration value A H situation.

[0038] If the result of step S4 is negative, step S5 is executed to determine the first leakage situation; if the result of step S4 is positive, step S8 is executed to determine the second leakage situation. After step S5 confirms the first leakage situation, step S6 is executed to control the operation of the fresh air blower 5 and the operation of the indoor fan; after step S8 confirms the second leakage situation, step S9 is executed to control the operation of the fresh air blower 5 and the operation of the indoor fan.

[0039] The control method of the present invention primarily considers the structural characteristics of the cabinet unit. Heat exchanger 1 and connecting pipe 2 are both leak points, yet they are separated by a drain pan 3. Therefore, separate refrigerant concentration sensors are required for monitoring. Furthermore, considering that the indoor fan's airflow cannot reach the area below drain pan 3, if step S4 determines that the leak is only in this area, the indoor fan is shut down to avoid ineffective operation and energy waste.

[0040] Looking back at step S2, if the determination result of step S2 is yes, step S7 is executed to loop and determine the refrigerant leakage.

[0041] At this time, first determine the refrigerant density m based on the refrigerant type data.

[0042] When the refrigerant density m is greater than the air density ρ; If the second refrigerant concentration value A2 is greater than or equal to the first preset concentration value A H , the judgment result of step S7 is yes, and the refrigerant leakage is determined; However, if the first refrigerant concentration value A1 is greater than or equal to the first preset concentration value A H When the second refrigerant concentration value A2 is greater than or equal to the second preset concentration value A L If so, the judgment result of step S7 is yes, then it is determined that the refrigerant is leaking.

[0043] When the refrigerant density m is less than the air density ρ: If the first refrigerant concentration value A1 is greater than or equal to the first preset concentration value A H , the judgment result of step S7 is yes, and it is determined that the refrigerant is leaking.

[0044] However, if the second refrigerant concentration value A2 is greater than or equal to the first preset concentration value A H When the first refrigerant concentration value A1 is greater than or equal to the second preset concentration value A L If so, the judgment result of step S7 is yes, then it is determined that the refrigerant is leaking.

[0045] Among them, the second preset concentration value A L Less than the first preset concentration value A H Taking R290 refrigerant as an example, according to its physical properties, its lower explosion limit LEL R290 =2.1%, so the indoor refrigerant concentration judgment standard is set as follows: The first preset concentration value A H =0.2×LEL R290 =0.42%, the second preset concentration value A L =0.01×LEL R290 =0.021%.

[0046] Although the area where the heat exchanger is located and the area where the connecting pipe is located (the upper and lower areas of the water tray) are almost airtight, the refrigerant can slightly penetrate into the other area through some wiring positions or gaps. Therefore, in the judgment step S7, considering the refrigerant concentration and its penetration direction, it is possible to detect a higher first preset concentration value A in one area when a leakage concentration is detected. H , combined with whether the leakage concentration in another area reaches a preset lower second preset concentration value A L , comprehensively judge whether there is a leak. This setting mainly takes into account the impact of long-term use and aging on detection sensitivity to avoid false alarms. If the result of step S7 is yes, step S4 is also executed to determine the type of leak.

[0047] Before the fresh air blower is started in step S6 and step S9, the operation time of the fresh air blower is calculated based on the space size data.

[0048] Furthermore, the space dimension data is calculated and generated based on the indoor area and the ventilation height; further, the refrigerant density is determined based on the refrigerant type data, and the ventilation height is determined based on the relationship between the refrigerant density and the air density.

[0049] Furthermore, the step of determining the ventilation height according to the relationship between the refrigerant density and the air density includes: If the refrigerant density is greater than the upper limit of the floating range based on the air density, the ventilation height is determined to be the first preset height; if the refrigerant density is within the floating range based on the air density, the ventilation height is determined to be the second preset height; if the refrigerant density is less than the lower limit of the floating range based on the air density, the ventilation height is determined to be the third preset height; the first preset height is greater than the second preset height, and the second preset height is greater than the third preset height. Furthermore, the first preset height is greater than or equal to the first height and less than or equal to the second height, and the second height is less than the preset indoor height; the second preset height is twice the preset indoor height; and the third preset height is greater than or equal to three times the preset indoor height.

[0050] Specifically, the space dimension data includes ventilation volume V, where ventilation volume V=S×H, where S is the indoor area and H is the ventilation height.

[0051] The indoor area S is set or modified when the user turns on the air conditioner for the first time. If it is not set or modified, it is determined according to the cooling capacity of the air conditioner. The default indoor area S for an air conditioner with a cooling capacity of 5kw is 25㎡; the default indoor area S for an air conditioner with a cooling capacity of 7.2kw is 36㎡.

[0052] If the refrigerant density m used by the air conditioner is greater than the upper limit of the floating range based on the air density ρ, the ventilation height H is determined to be a first preset height H1, which is greater than or equal to the first height and less than or equal to the second height. In this embodiment, the first height is set to 1 meter and the second height is set to 2 meters. Both the first height and the second height are pre-set fixed values.

[0053] If the refrigerant density used by the air conditioner is close to the air density, that is, the refrigerant density m is within the floating range based on the air density ρ, the ventilation height H is determined to be the second preset height H2, and the value of the second preset height H2 is equal to twice the preset indoor height h.

[0054] If the refrigerant density m is less than the lower limit of the floating range based on the air density ρ, the ventilation height H is determined to be the third preset height H3; the value of the third preset data H3 is greater than or equal to three times the preset indoor height.

[0055] Among them, the preset indoor height h should be greater than the above-mentioned second height; among them, the floating range based on the air density p is, for example, p1≤p≤p2, p1 is the lower limit value of the floating range, and p2 is the upper limit value of the floating range.

[0056] The preset indoor height h is set or modified by the user when the device is turned on for the first time. If it is not set or modified, the default preset indoor height h=3.3m.

[0057] The running time t is calculated according to the formula t=N×V / Q m Computational generation.

[0058] In the formula, V is the ventilation volume V, Q m is the maximum fresh air volume of this air-conditioning fresh air system, N is the set ventilation times, and in this embodiment, N is set to 20.

[0059] Mainly, when calculating the running time t of the fresh air blower 5, the present invention also combines the density of the refrigerant type of the air conditioner. Based on this, when calculating the parameter V in the running time t, the ventilation height in different rooms is set in combination with the relationship between the refrigerant density and the air density. Since the fresh air outlet is located at a lower position, the refrigerant with high density is easy to dilute after sinking, and the refrigerant with low density floats after leakage and is relatively difficult to dilute. The ventilation height in the space size data is determined according to the refrigerant density to ensure sufficient ventilation in the room. For example, the refrigerant density of refrigerant R290 is greater than the air density, and it will sink after leakage and gather near the ground. Therefore, the ventilation height H is determined to be the preset first height of 1m. Step S10 is executed after step S6 and step S9 to control the fresh air blower 5 according to the running time t, and then step S11 is executed to determine whether the first refrigerant concentration value A1 and the second refrigerant concentration value A2 are both lower than the second preset concentration value A L If not, step S12 is executed, and the fresh air fan 5 continues to operate. If the indoor fan is also running, the indoor fan continues to operate along with the fresh air fan 5. Then, the process returns to step S11 to continuously determine the concentration change. If the judgment result of step S11 is yes, it means that the current refrigerant concentration has effectively decreased. At this time, step S13 is executed to control the fresh air fan 5 to stop operating. If the indoor fan is also running, the indoor fan stops when the fresh air fan 5 stops.

[0060] Readable storage medium embodiment The readable storage medium of the present invention can be any form of storage medium that can be read by the processor of a computer device, including but not limited to non-volatile memory, volatile memory, ferroelectric memory, etc. The readable storage medium stores a computer program. When the processor of the computer device reads and executes the computer program stored in the memory, the steps of the above-mentioned air conditioning control method can be implemented.

[0061] The computer program includes computer program code, which may be in source code form, object code form, executable file, or some intermediate form. The readable storage medium may include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard drive, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal, and software distribution medium. It should be noted that the content of the readable storage medium may be appropriately increased or decreased based on the requirements of legislation and patent practice within a jurisdiction. For example, in some jurisdictions, based on legislation and patent practice, readable storage media do not include electric carrier signals and telecommunication signals.

[0062] Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Air conditioning control method, comprising: Detecting a refrigerant concentration value, and determining whether the refrigerant is leaking based on a comparison result of the refrigerant concentration value with a first preset concentration value; If refrigerant leakage is confirmed, control the operation of the fresh air fan; Its characteristics are: The step of detecting the refrigerant concentration value includes: Obtaining a first refrigerant concentration value detected by a first refrigerant concentration sensor and a second refrigerant concentration value detected by a second refrigerant concentration sensor, wherein the first refrigerant concentration sensor is disposed above a water receiving pan of a heat exchanger, and the second refrigerant concentration sensor is disposed below the water receiving pan of the heat exchanger; The step of determining whether the refrigerant is leaking according to the comparison result of the refrigerant concentration value and the first preset concentration value includes: determining the first preset concentration value according to the refrigerant type data of the air conditioner; If either the first refrigerant concentration value or the second refrigerant concentration value is greater than or equal to the first preset concentration value, a refrigerant leakage is determined; If refrigerant leakage is confirmed, the steps of controlling the operation of the fresh air fan include: The operating time of the fresh air blower is calculated and generated according to the space dimension data, and the space dimension data is calculated and generated according to the refrigerant type data.

2. The air conditioning control method according to claim 1, comprising: The step of determining a refrigerant leakage if either the first refrigerant concentration value or the second refrigerant concentration value is greater than or equal to the first preset concentration value includes: If the first refrigerant concentration value is greater than or equal to the first preset concentration value, determining a first leakage condition; If the first refrigerant concentration value is less than the first preset concentration value and the second refrigerant concentration value is greater than or equal to the first preset concentration value, determining a second leakage condition; If refrigerant leakage is confirmed, the steps of controlling the operation of the fresh air fan include: If the first leakage is confirmed, the fresh air fan is controlled to operate and the indoor fan is controlled to operate; If the second leakage situation is confirmed, the fresh air fan is controlled to run and the indoor fan is controlled to stop running.

3. The air conditioning control method according to claim 2, comprising: In the step of determining refrigerant leakage if either the first refrigerant concentration value or the second refrigerant concentration value is greater than or equal to the first preset concentration value: determining a refrigerant density according to the refrigerant type data; If the refrigerant density is greater than the air density: When the first refrigerant concentration value is greater than or equal to the first preset concentration value, and the second refrigerant concentration value is greater than or equal to the second preset concentration value, a refrigerant leak is determined; and the second preset concentration value is less than the first preset concentration value; If the refrigerant density is less than the air density: When the second refrigerant concentration value is greater than or equal to the first preset concentration value, and the first refrigerant concentration value is greater than or equal to the second preset concentration value, refrigerant leakage is determined.

4. The air conditioning control method according to claim 3, characterized in that: If a refrigerant leak is confirmed, the steps to control the operation of the fresh air fan also include: After controlling the fresh air blower to operate for the operating time, determining whether the first refrigerant concentration value and the second refrigerant concentration value are both lower than the second preset concentration value; If so, the fresh air fan is controlled to stop running.

5. The air conditioning control method according to any one of claims 1 to 4, characterized in that: The step of calculating and generating the operating time of the fresh air fan according to the space size data, wherein the space size data is calculated and generated according to the refrigerant type data, includes: The space dimension data is generated by calculation based on the indoor area and ventilation height.

6. The air conditioning control method according to claim 5, characterized in that: The refrigerant density is determined according to the refrigerant type data, and the ventilation height is determined according to the relationship between the refrigerant density and the air density.

7. The air conditioning control method according to claim 6, characterized in that: The step of determining the ventilation height according to the relationship between the refrigerant density and the air density includes: If the refrigerant density is greater than an upper limit of a floating range based on the air density, the ventilation height is determined to be a first preset height; If the refrigerant density is within a floating range based on the air density, the ventilation height is determined to be a second preset height; If the refrigerant density is less than a lower limit of a floating range based on the air density, the ventilation height is determined to be a third preset height; The first preset height is greater than the second preset height, and the second preset height is greater than the third preset height.

8. The air conditioning control method according to claim 7, characterized in that: The first preset height is less than the preset indoor height; The second preset height is greater than or equal to twice the preset indoor height; The third preset data is equal to three times the preset indoor height.

9. Air conditioner, characterized in that A processor and a memory are provided thereon, wherein the memory stores a computer program, and when the computer program is executed by the processor, each step of the air conditioning control method according to any one of claims 1 to 8 is implemented.

10. A readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, each step of the air conditioning control method according to any one of claims 1 to 8 is implemented.

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