Air conditioner control method and device, air conditioner, storage medium and program product

Abstract

The invention discloses a control method and device of an air conditioner, the air conditioner, a storage medium and a computer program product. A filter screen is arranged at an air inlet of an indoor unit of the air conditioner; the method comprises the steps that in the air conditioner operation process, whether filth blockage occurs to a filter screen or not is determined according to the inner pipe temperature and the air outlet speed; and if the filth blockage of the filter screen is determined, determining the rotating speed adjusting quantity of the inner fan according to the set temperature and the set wind gear, and increasing the rotating speed of the inner fan according to the rotating speed adjusting quantity. According to the scheme, when filth blockage of the filter screen is judged according to the inner pipe temperature and the air outlet speed, the rotating speed adjusting amount of the inner fan is determined according to the set temperature and the set air gear to increase the rotating speed of the inner fan, so that insufficient air volume caused by filth blockage of the filter screen is made up, the refrigerating or heating capacity of an air conditioner is guaranteed, and indoor comfort is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioners, and particularly relates to a control method, device, air conditioner, storage medium and computer program product for an air conditioner. Background Art

[0002] Most indoor units of air conditioners are equipped with a filter screen, which can isolate dust in the air in the room and prevent some fine particles from falling onto the evaporator or the air duct. However, as the usage time increases, the filter screen will gradually be blocked by dust, etc., affecting the air intake volume of the air conditioner. The reduction of the air intake volume will also affect the heat exchange efficiency of the air conditioner, thereby reducing the cooling effect of the air conditioner and affecting the use comfort.

[0003] The above content is only used to assist in understanding the technical solution of the present invention, and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The purpose of the present invention is to provide a control method, device, air conditioner, storage medium and computer program product for an air conditioner, so as to solve the problem that the air intake volume and heat exchange efficiency of the air conditioner decrease after the filter screen of the indoor unit of the air conditioner becomes dirty and blocked, reducing the cooling effect of the air conditioner and affecting the use comfort, and achieve the effect of determining the rotation speed adjustment amount of the internal fan according to the set temperature and set air damper when it is determined that the filter screen is dirty and blocked by judging the inner pipe temperature and the air outlet speed, so as to increase the rotation speed of the internal fan, thereby making up for the insufficient air volume caused by the dirty filter screen, ensuring the cooling or heating capacity of the air conditioner, and improving the indoor comfort.

[0005] The present invention provides a control method for an air conditioner, the air conditioner includes a filter screen and an internal fan; the filter screen is arranged at the air inlet of the indoor unit of the air conditioner; the method includes: during the operation of the air conditioner, obtaining the set temperature, set air damper, inner pipe temperature of the air conditioner, and air outlet speed; determining whether the filter screen is dirty and blocked according to the inner pipe temperature and the air outlet speed; if it is determined that the filter screen is dirty and blocked, determining the rotation speed adjustment amount of the internal fan according to the set temperature and the set air damper, and increasing the rotation speed of the internal fan according to the rotation speed adjustment amount.

[0006] In some embodiments, determining whether the filter screen is dirty and blocked according to the inner pipe temperature and the air outlet speed includes: in the cooling mode, judging the magnitude of the inner pipe temperature and the magnitude of the air outlet speed; if the inner pipe temperature is less than a preset first inner pipe temperature and the air outlet speed is less than a preset air outlet speed, determining that the filter screen is dirty and blocked; and / or, in the heating mode, judging the magnitude of the inner pipe temperature and the magnitude of the air outlet speed; if the inner pipe temperature is greater than a preset second inner pipe temperature and the air outlet speed is less than a preset air outlet speed, determining that the filter screen is dirty and blocked.

[0007] In some embodiments, in the cooling mode, the preset first inner pipe temperature is directly proportional to both the set air damper and the set temperature, and the preset air outlet wind speed is directly proportional to the set air damper; in the heating mode, the preset second inner pipe temperature is inversely proportional to the set air damper, the preset second inner pipe temperature is directly proportional to the set temperature, and the preset air outlet wind speed is directly proportional to the set air damper.

[0008] In some embodiments, the set air damper includes a high air damper, a medium air damper, and a low air damper; determining the rotation speed adjustment amount of the inner blower according to the set temperature and the set air damper includes: when the set air damper is the high air damper, the rotation speed adjustment amount of the inner blower is the preset first rotation speed adjustment amount; when the set air damper is the medium air damper, the rotation speed adjustment amount of the inner blower is the preset second rotation speed adjustment amount; when the set air damper is the low air damper, the rotation speed adjustment amount of the inner blower is the preset third rotation speed adjustment amount; wherein, the preset first rotation speed adjustment amount > the preset second rotation speed adjustment amount > the preset third rotation speed adjustment amount; in the cooling mode, the preset first rotation speed adjustment amount, the preset second rotation speed adjustment amount, and the preset third rotation speed adjustment amount are all inversely proportional to the set temperature; in the heating mode, the preset first rotation speed adjustment amount, the preset second rotation speed adjustment amount, and the preset third rotation speed adjustment amount are all directly proportional to the set temperature.

[0009] In some embodiments, the air conditioner further includes a fresh air device; the fresh air device includes a fresh air blower; the method further includes: after the air conditioner is turned off, if it is determined that the filter screen is dirty and blocked, then control the fresh air blower to operate and the inner blower to operate in reverse within a preset first time to clean the filter screen.

[0010] In some embodiments, the method further includes: after cleaning the filter screen, if it is continuously determined that the filter screen is not dirty and blocked for a preset second time, then clean the filter screen again.

[0011] Matched with the above method, on the other hand, the present invention provides a control device for an air conditioner, the air conditioner includes a filter screen and an inner blower; the filter screen is arranged at the air inlet of the indoor unit of the air conditioner; the device includes: an acquisition unit configured to acquire the set temperature, the set air damper, the inner pipe temperature of the air conditioner, and the air outlet wind speed during the operation of the air conditioner; a control unit configured to determine whether the filter screen is dirty and blocked according to the inner pipe temperature and the air outlet wind speed; the control unit is further configured to, if it is determined that the filter screen is dirty and blocked, then determine the rotation speed adjustment amount of the inner blower according to the set temperature and the set air damper, and increase the rotation speed of the inner blower according to the rotation speed adjustment amount.

[0012] In some embodiments, the control unit determines whether the filter screen is dirty blocked according to the inner pipe temperature and the air outlet wind speed, including: in the cooling mode, judging the magnitude of the inner pipe temperature and the magnitude of the air outlet wind speed; if the inner pipe temperature is less than a preset first inner pipe temperature and the air outlet wind speed is less than a preset air outlet wind speed, determining that the filter screen is dirty blocked; and / or, in the heating mode, judging the magnitude of the inner pipe temperature and the magnitude of the air outlet wind speed; if the inner pipe temperature is greater than a preset second inner pipe temperature and the air outlet wind speed is less than a preset air outlet wind speed, determining that the filter screen is dirty blocked.

[0013] In some embodiments, in the cooling mode, the preset first inner pipe temperature is directly proportional to both the set air damper and the set temperature, and the preset air outlet wind speed is directly proportional to the set air damper; in the heating mode, the preset second inner pipe temperature is inversely proportional to the set air damper, the preset second inner pipe temperature is directly proportional to the set temperature, and the preset air outlet wind speed is directly proportional to the set air damper.

[0014] In some embodiments, the set air damper includes a high air damper, a medium air damper, and a low air damper; the control unit determines the rotational speed adjustment amount of the indoor fan according to the set temperature and the set air damper, including: when the set air damper is the high air damper, the rotational speed adjustment amount of the indoor fan is a preset first rotational speed adjustment amount; when the set air damper is the medium air damper, the rotational speed adjustment amount of the indoor fan is a preset second rotational speed adjustment amount; when the set air damper is the low air damper, the rotational speed adjustment amount of the indoor fan is a preset third rotational speed adjustment amount; wherein, the preset first rotational speed adjustment amount > the preset second rotational speed adjustment amount > the preset third rotational speed adjustment amount; in the cooling mode, the preset first rotational speed adjustment amount, the preset second rotational speed adjustment amount, and the preset third rotational speed adjustment amount are all inversely proportional to the set temperature; in the heating mode, the preset first rotational speed adjustment amount, the preset second rotational speed adjustment amount, and the preset third rotational speed adjustment amount are all directly proportional to the set temperature.

[0015] In some embodiments, the air conditioner further includes a fresh air device; the fresh air device includes a fresh air fan; the control unit is specifically further configured to, after the air conditioner is shut down, if it is determined that the filter screen is dirty blocked, control the fresh air fan to operate and the indoor fan to rotate in reverse within a preset first time to clean the filter screen.

[0016] In some embodiments, the control unit is specifically further configured to, after cleaning the filter screen, if it is continuously determined that the filter screen is not dirty blocked for a preset second time, clean the filter screen again.

[0017] Matched with the above device, on the other hand, the present invention provides an air conditioner, including: the control device of the air conditioner described above.

[0018] In line with the above method, on the other hand, the present invention provides a storage medium, which includes a stored program. When the program runs, it controls the device where the storage medium is located to execute the above-described control method for the air conditioner.

[0019] In line with the above method, on the other hand, the present invention provides a computer program product, which includes a computer program. When the computer program product is processed and executed, it realizes the steps of the above-described control method for the air conditioner.

[0020] In the solution of the present invention, when the air conditioner is running, it determines whether the filter screen is dirty blocked according to the inner pipe temperature and the air outlet wind speed. If it is determined that the filter screen is dirty blocked, then it determines the rotation speed adjustment amount of the indoor fan according to the set temperature and the set wind speed gear, and increases the rotation speed of the indoor fan according to the rotation speed adjustment amount. By determining that the filter screen is dirty blocked based on the inner pipe temperature and the air outlet wind speed, and determining the rotation speed adjustment amount of the indoor fan according to the set temperature and the set wind speed gear to increase the rotation speed of the indoor fan, it can make up for the insufficient air volume caused by the dirty filter screen, ensure the cooling or heating capacity of the air conditioner, and improve the indoor comfort.

[0021] Other features and advantages of the present invention will be described in the subsequent specification, and part of them will be obvious from the specification or understood by implementing the present invention.

[0022] Next, through the drawings and embodiments, the technical solution of the present invention will be further described in detail. Description of the Drawings

[0023] Figure 1 It is a schematic flowchart of an embodiment of the control method for the air conditioner of the present invention;

[0024] Figure 2 It is a schematic structural diagram of an embodiment of the control device for the air conditioner of the present invention;

[0025] Figure 3 It is a schematic structural diagram of an embodiment of the indoor unit of the air conditioner;

[0026] Figure 4 It is a schematic structural diagram of another embodiment of the indoor unit of the air conditioner;

[0027] Figure 5 It is a schematic flowchart of the dirty block determination method in the cooling mode of the air conditioner.

[0028] Combined with the drawings, the following are the reference numerals in the embodiments of the present invention:

[0029] 1 - Filter net; 2 - Evaporator; 3 - Panel; 4 - First air deflector; 5 - Second air deflector; 6 - Air velocity sensor; 7 - Cross-flow fan blade; 8 - Air inlet grille; 9 - Air inlet; 102 - Acquisition unit; 104 - Control unit. Detailed implementation manners

[0030] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0031] According to an embodiment of the present invention, a control method for an air conditioner is provided. The air conditioner includes a filter net and an internal blower; the filter net is arranged at the air inlet of the indoor unit of the air conditioner.

[0032] The structure of the indoor unit of the air conditioner is as Figure 3 and Figure 4 shown. The indoor unit includes a filter net 1, an evaporator 2, a panel 3, a first air deflector 4, a second air deflector 5, an air velocity sensor 6, a cross-flow fan blade 7, and an air inlet grille 8. The outermost layer of the indoor unit is the panel 3, which serves to protect the internal components of the indoor unit. The air inlet grille 8 is distributed on the panel 3, which can prevent larger foreign objects from entering the interior of the indoor unit and protect the internal components. Behind the air inlet grille 8 is the air inlet 9, and the filter net 1 is installed at the air inlet 9 to filter the air entering the indoor unit, which can effectively intercept larger particulate impurities such as dust, hair, and fibers in the air, avoid these impurities adhering to key components such as the evaporator 2, not only can maintain the heat exchange efficiency of the evaporator, but also reduce the wear of the internal components of the indoor unit by dust, extend the service life of the air conditioner, and at the same time contribute to maintaining the cleanliness of the indoor air.

[0033] An air velocity sensor 6 is installed near the cross-flow fan blade 7, which can monitor the air flow velocity passing through in real time and accurately. By collecting the air velocity data, the air velocity sensor 6 feeds the information back to the control system of the air conditioner. The control system can adjust the operating state of the air conditioner according to the difference between the actual air velocity and the preset air velocity, such as adjusting the rotation speed of the cross-flow fan blade 7, so as to ensure the stability of the air output of the air conditioner and meet the air volume requirements set by the user. Specifically, the air velocity sensor 6 is installed at the front end of the volute tongue of the panel body. Installing it at this position can effectively avoid the influence of different up and down air deflection angles set by the user on the air output velocity and ensure the authenticity of the air output velocity collection.

[0034] As Figure 1Flow schematic diagram of an embodiment of the method of the present invention. The control method of the air conditioner may include: step S110 to step S130.

[0035] In step S110, during the operation of the air conditioner, obtain the set temperature, set air damper, the inner pipe temperature of the air conditioner, and the air outlet wind speed.

[0036] The set temperature and set air damper are set by the user. If the user does not make any settings after the air conditioner is turned on, the set temperature and set air damper during the previous operation of the air conditioner are used as the current set temperature and set air damper. Alternatively, the preset set temperature and preset air damper in the current operating mode can be used as the current set temperature and set air damper. The inner pipe temperature is the pipe temperature of the evaporator and can be collected by a temperature sensor. The air outlet wind speed is the wind speed collected by the wind speed collector 6.

[0037] Among them, when the change in the inner pipe temperature exceeds 1°C, it is considered that the air conditioner system has not yet reached a stable operation state, and subsequent dirt blockage judgment is not performed at this time. Only when the change in the inner pipe temperature is less than or equal to 1°C for a continuous period of time, record the current inner pipe temperature and perform dirt blockage judgment.

[0038] In step S120, determine whether the filter screen is dirty blocked according to the inner pipe temperature and the air outlet wind speed.

[0039] When the air in the environment flows into the indoor unit through the filter screen, dust and other impurities in the air will adhere to the filter screen. After a long time, too much adhered dust will cause dirt blockage, resulting in a reduction in the air intake volume of the indoor unit and a decrease in the heat exchange efficiency of the evaporator. The reduction in the air intake volume and the heat exchange efficiency will further affect the air outlet wind speed of the air conditioner and the pipe temperature of the evaporator. Therefore, it is possible to judge whether the filter screen is dirty blocked through the inner pipe temperature and the air outlet wind speed.

[0040] In some embodiments, in step S120, the specific process of determining whether the filter screen is dirty blocked according to the inner pipe temperature and the air outlet wind speed includes: in the cooling mode, judge the magnitude of the inner pipe temperature and the magnitude of the air outlet wind speed; if the inner pipe temperature is less than the preset first inner pipe temperature and the air outlet wind speed is less than the preset air outlet wind speed, determine that the filter screen is dirty blocked; in the heating mode, judge the magnitude of the inner pipe temperature and the magnitude of the air outlet wind speed; if the inner pipe temperature is greater than the preset second inner pipe temperature and the air outlet wind speed is less than the preset air outlet wind speed, determine that the filter screen is dirty blocked.

[0041] By monitoring and analyzing the inner pipe temperature and the air outlet wind speed in both the cooling and heating modes, the dirt blockage condition of the filter screen can be accurately identified.

[0042] When the filter screen is dirty and blocked, the resistance to air inflow increases significantly. At this time, if the fan speed remains unchanged, the amount of air that can enter the air conditioner decreases, resulting in a decrease in the blown air speed. Therefore, when the actual blown air speed is less than the preset blown air speed, it indicates that there is an obstacle in the air flow path inside the air conditioner. The preset blown air speed is the wind speed standard that should be achieved when the filter screen is normal and the fan is operating normally. The internal fan operates at the set speed and can provide a stable air flow under normal circumstances.

[0043] Since the flow direction of the refrigerant is different in the cooling and heating modes, there are two cases for judging whether the filter screen is dirty and blocked based on the internal pipe temperature. During cooling, under normal circumstances, when a sufficient amount of indoor air flows over the evaporator surface at an appropriate flow rate, heat exchange can be fully carried out, the refrigerant can stably absorb heat, and the internal pipe temperature will also be maintained within a reasonable range. The preset first internal pipe temperature is the lower temperature limit set based on this normal working condition. When the filter screen becomes dirty and blocked, the amount of air passing through the evaporator decreases, and then the pipe temperature of the evaporator drops. Therefore, when the actually monitored internal pipe temperature is less than the preset first internal pipe temperature, it is considered that the filter screen may be dirty and blocked. During heating, the evaporator becomes a condenser. After the filter screen becomes dirty and blocked, the amount of air passing through the condenser decreases, and then the pipe temperature of the condenser rises. Therefore, when the actually monitored internal pipe temperature is greater than the preset second internal pipe temperature, it is considered that the filter screen may be dirty and blocked. The preset second internal pipe temperature is the upper limit of the internal pipe temperature under normal circumstances in the heating mode.

[0044] By combining the internal pipe temperature and the blown air speed to judge whether the filter screen is dirty and blocked, the situation of the dirty and blocked filter screen can be detected in a timely manner, and the decrease in heat exchange efficiency caused by the blocked filter screen can be avoided, thereby verifying the service life of the air conditioner and improving indoor comfort.

[0045] In some embodiments, in the cooling mode, the preset first internal pipe temperature is directly proportional to the set wind speed and the set temperature, and the preset blown air speed is directly proportional to the set wind speed; in the heating mode, the preset second internal pipe temperature is inversely proportional to the set wind speed, the preset second internal pipe temperature is directly proportional to the set temperature, and the preset blown air speed is directly proportional to the set wind speed.

[0046] In the cooling mode, the higher the set air volume level, the more air passes through the evaporator per unit time. More air exchanges heat with the evaporator, causing the refrigerant in the evaporator to absorb more heat, accelerating the evaporation rate, and relatively increasing the temperature of the evaporator. Therefore, the preset first internal pipe temperature increases as the set air volume level rises, and the two are in a direct proportional relationship. For example, when set to the low air volume level, the air flow rate is slow, the heat exchange amount with the evaporator is small, and the preset first internal pipe temperature may be 8°C; when set to the high air volume level, the air quickly passes through the evaporator, the heat exchange amount increases, and the preset first internal pipe temperature may rise to 12°C. The higher the set temperature, the lower the cooling degree required by the air conditioner. At this time, the evaporator does not need to cool the air to a very low temperature, and the evaporation temperature of the refrigerant is relatively high, resulting in a corresponding increase in the internal pipe temperature. For example, when the set temperature is 20°C, the preset first internal pipe temperature may be 10°C; when the set temperature is increased to 25°C, the preset first internal pipe temperature may become 13°C.

[0047] In the heating mode, the higher the set air volume level, the more air quickly passes through the condenser, taking away more heat and relatively reducing the temperature of the condenser. Therefore, the preset second internal pipe temperature decreases as the set air volume level rises, and the two are in an inverse proportional relationship. The higher the set temperature, the more heat the air conditioner needs to provide to raise the indoor temperature. This requires a higher temperature of the refrigerant in the condenser, increasing the internal pipe temperature, so the preset second internal pipe temperature is in a direct proportional relationship with the set temperature.

[0048] Regardless of whether it is in the cooling mode or the heating mode, the set air volume level is the setting of the blower speed. The higher the air volume level, the faster the blower speed and the greater the blown air speed. For example, at the low air volume level, the blower speed is slow, and the preset air outlet speed may be 2 m / s; at the high air volume level, the blower operates at a high speed, and the preset air outlet speed may reach 5 m / s.

[0049] Considering the influence of the set air volume level and the set temperature on the preset internal pipe temperature and the preset air outlet speed can more accurately reflect the actual operating state of the air conditioner. Under different setting conditions, the normal operating parameters of the air conditioner will be different. By establishing this relationship for judgment, misjudgment caused by different setting conditions can be avoided.

[0050] At step S130, if it is determined that the filter screen is dirty and blocked, then determine the rotational speed adjustment amount of the internal blower according to the set temperature and the set air volume level, and increase the rotational speed of the internal blower according to the rotational speed adjustment amount.

[0051] A dirty air filter will impede air circulation, reduce the air volume entering the evaporator or condenser, and lower the heat exchange efficiency. By increasing the speed of the internal fan, the air velocity can be increased to make up for the insufficient air volume caused by the dirty air filter, enabling the air to come into full contact with the heat exchanger, ensuring the cooling or heating capacity of the air conditioner, and allowing the indoor temperature to reach the set temperature as much as possible. Different set temperatures and set wind speeds represent different user requirements for the indoor environment. By flexibly adjusting the air volume and air supply speed in combination with the set temperature and set wind speed, the speed of the internal fan can be adjusted to better meet the actual needs and maintain a stable indoor temperature, improving comfort.

[0052] In some embodiments, the set wind speed includes a high wind speed, a medium wind speed, and a low wind speed. In step S130, the specific process of determining the rotational speed adjustment amount of the internal fan according to the set temperature and the set wind speed includes steps S210 to S230.

[0053] Step S210, when the set wind speed is the high wind speed, the rotational speed adjustment amount of the internal fan is a preset first rotational speed adjustment amount.

[0054] Since under the high wind speed, users originally expect a relatively large air volume to achieve rapid air conditioning (such as rapid cooling or heating), but the dirt blockage causes insufficient air flow. At this time, giving the preset first rotational speed adjustment amount allows the internal fan to operate at a relatively high speed, increasing the air throughput. Although the dirt blockage will impede air flow, increasing the speed of the internal fan can still improve the air volume to a certain extent and try to meet the user's demand for rapid indoor environment adjustment under the high wind speed. For example, in a hot summer, when the air conditioner is dirty and still at the high wind speed, the internal fan increases its speed according to the preset first rotational speed adjustment amount, enabling more air to come into contact with the evaporator and maintaining the cooling effect as much as possible.

[0055] Step S220, when the set wind speed is the medium wind speed, the rotational speed adjustment amount of the internal fan is a preset second rotational speed adjustment amount.

[0056] The air volume requirement for the medium wind speed is moderate. In the case of dirt blockage, the air circulation is not smooth. The preset second rotational speed adjustment amount moderately increases the speed of the internal fan, which can overcome the air resistance caused by the dirt blockage to a certain extent and increase the air flow, without overloading the internal fan like the high wind speed. For example, when the indoor temperature is already close to the set temperature, the air conditioner is at the medium wind speed but there is dirt blockage. The internal fan adjusts its speed according to the preset second rotational speed adjustment amount, which can maintain a relatively stable indoor environment while ensuring a certain air circulation and is more energy-efficient.

[0057] Step S230, when the set wind speed is the low wind speed, the rotational speed adjustment amount of the internal fan is a preset third rotational speed adjustment amount.

[0058] The low wind speed setting is mainly used in scenarios where noise requirements are high or air conditioning needs are relatively mild. In the case of dirt blockage, although the air flow decreases, by presetting the third speed adjustment amount, the internal fan can increase the air volume by increasing the speed relatively slightly, thus improving the problem of insufficient air circulation caused by dirt blockage without adding too much noise. For example, when sleeping at night, if the air conditioner is set to low wind speed and there is dirt blockage, the internal fan adjusts its speed slightly according to the preset third speed adjustment amount, which can not only ensure a certain circulation of indoor air to maintain a comfortable temperature but also prevent noise from affecting sleep quality.

[0059] Among them, the preset first speed adjustment amount > the preset second speed adjustment amount > the preset third speed adjustment amount; in the cooling mode, the preset first speed adjustment amount, the preset second speed adjustment amount, and the preset third speed adjustment amount are all inversely proportional to the set temperature; in the heating mode, the preset first speed adjustment amount, the preset second speed adjustment amount, and the preset third speed adjustment amount are all directly proportional to the set temperature.

[0060] When the air conditioner is cooling, if the set temperature is relatively high, the temperature drop required indoors is relatively small. At this time, there is no need for the air conditioner to operate with strong cooling capacity, and the speed adjustment amount of the internal fan will be relatively small, so the speed of the internal fan will not be too high; if the set temperature is relatively low, a larger temperature drop is required indoors. At this time, the air conditioner needs to operate with stronger cooling capacity, and the speed of the internal fan increases. Therefore, the speed adjustment amount is inversely proportional to the set temperature. Correspondingly, in the heating mode, a higher wind speed is required when the set temperature is high, and a lower wind speed is required when the set temperature is low. Therefore, the speed adjustment amount is directly proportional to the set temperature.

[0061] The set temperature reflects the user's expectation for the indoor environmental temperature, and the set wind speed setting reflects the user's demand for indoor air flow rate and comfort. By comprehensively considering these two factors to adjust the speed of the internal fan, the air conditioning system can accurately adjust its operating state according to the actual usage scenario and user needs, and can flexibly adjust the speed of the internal fan according to different degrees of dirt blockage and the temperature and wind speed settings set by the user, balancing energy conservation and performance and enhancing the user experience.

[0062] In some embodiments, the air conditioner further includes a fresh air device; the fresh air device includes a fresh air fan. The method further includes a process of cleaning the filter screen, which specifically includes: after the air conditioner is turned off, if it is determined that the filter screen is dirty, the fresh air fan is controlled to operate and the internal fan is controlled to rotate in reverse within a preset first time to clean the filter screen.

[0063] After the air conditioner is turned off, the air deflector closes. At this time, the fresh air fan operates and the indoor fan runs in reverse to blow away the dust on the filter screen and clean the filter screen. Specifically, the function of the fresh air fan is to introduce fresh outdoor air into the room. After the air conditioner is turned off and it is determined that the filter screen is dirty and blocked, turning on the fresh air fan can allow outdoor air to enter the interior of the air conditioner. Since the outdoor air has a certain pressure and flow rate, it can provide power to blow away the dust on the filter screen. Controlling the indoor fan to run in reverse changes the direction of air flow, which can further enhance the impact force on the dust on the filter screen. Cooperating with the air flow introduced by the fresh air fan, it blows the filter screen from different directions, making it easier for the dust to fall off from the pores of the filter screen. The specific value of the preset first time is determined according to factors such as the model of the air conditioner, the type of the filter screen, and the degree of dirt and blockage. An appropriate time range can be found through experiments and tests, which can not only ensure the cleaning effect but also take into account energy conservation and the service life of the equipment. For example, 2 minutes.

[0064] In some embodiments, the method further includes: after cleaning the filter screen, if it is continuously preset for a second time and it is determined that the filter screen is not dirty and blocked, then clean the filter screen again.

[0065] The preset second time can be set to 3 months. After the filter screen is cleaned, if no dirt and blockage of the filter screen is detected within the next 3 months, then the above control of the indoor fan and the fresh air fan is executed again 3 months after the first dirt and blockage to clean the filter screen. Even when there is no obvious dirt and blockage of the filter screen, after a period of use, there may be fine impurities such as dust gradually accumulating on the filter screen. Regular cleaning can timely remove these potential dust accumulations, prevent them from accumulating to the extent that it affects the cooling, heating effect and ventilation efficiency of the air conditioner, ensure that the air conditioner always maintains good operating performance, and maintain a comfortable indoor temperature and air quality.

[0066] Figure 5 It is a schematic flow chart of the dirt and blockage judgment method in the air conditioner cooling mode, as Figure 5 shown, the method includes:

[0067] Step 1, after the air conditioner is turned on for cooling, obtain the cooling temperature set by the user. If the set temperature ≤ 21°C, then execute Step 2; if 21°C < set temperature ≤ 25°C, then execute Step 3; if the set temperature > 25°C, then execute Step 4.

[0068] Step 2: Obtain the indoor pipe temperature and the air outlet speed of the air conditioner, and determine the wind gear at which the indoor fan is located at this time. When the indoor fan is at the high wind gear, if the air outlet speed < s1 and the indoor pipe temperature < t1, the rotation speed of the indoor fan is increased by 100 r; when the indoor fan is at the medium wind gear, if the air outlet speed < s2 and the indoor pipe temperature < t2, the rotation speed of the indoor fan is increased by 80 r; when the indoor fan is at the low wind gear, if the air outlet speed < s3 and the indoor pipe temperature < t3, the rotation speed of the indoor fan is increased by 50 r. s1, s2, and s3 are preset wind speeds, where s1 > s2 > s3; t1, t2, and t3 are preset indoor pipe temperatures, where t1 > t2 > t3.

[0069] Step 3: Obtain the indoor pipe temperature and the air outlet speed of the air conditioner, and determine the wind gear at which the indoor fan is located at this time. When the indoor fan is at the high wind gear, if the air outlet speed < s1 and the indoor pipe temperature < t4, the rotation speed of the indoor fan is increased by 80 r; when the indoor fan is at the medium wind gear, if the air outlet speed < s2 and the indoor pipe temperature < t5, the rotation speed of the indoor fan is increased by 50 r; when the indoor fan is at the low wind gear, if the air outlet speed < s3 and the indoor pipe temperature < t6, the rotation speed of the indoor fan is increased by 30 r. t4, t5, and t6 are preset indoor pipe temperatures, where t4 > t5 > t6.

[0070] Step 4: Obtain the indoor pipe temperature and the air outlet speed of the air conditioner, and determine the wind gear at which the indoor fan is located at this time. When the indoor fan is at the high wind gear, if the air outlet speed < s1 and the indoor pipe temperature < t7, the rotation speed of the indoor fan is increased by 50 r; when the indoor fan is at the medium wind gear, if the air outlet speed < s2 and the indoor pipe temperature < t8, the rotation speed of the indoor fan is increased by 60 r; when the indoor fan is at the low wind gear, if the air outlet speed < s3 and the indoor pipe temperature < t9, the rotation speed of the indoor fan is increased by 20 r. t7, t8, and t9 are preset indoor pipe temperatures, where t1 > t2 > t3.

[0071] Adopting the technical solution of this embodiment, when the air conditioner is running, it is determined whether the filter screen is dirty blocked according to the indoor pipe temperature and the air outlet speed. If it is determined that the filter screen is dirty blocked, the rotation speed adjustment amount of the indoor fan is determined according to the set temperature and the set wind gear, and the rotation speed of the indoor fan is increased according to the rotation speed adjustment amount. By determining that the filter screen is dirty blocked according to the indoor pipe temperature and the air outlet speed, and determining the rotation speed adjustment amount of the indoor fan according to the set temperature and the set wind gear to increase the rotation speed of the indoor fan, the insufficient air volume caused by the dirty filter screen is compensated, the cooling or heating capacity of the air conditioner is ensured, and the indoor comfort is improved.

[0072] According to an embodiment of the present invention, there is also provided a control device for an air conditioner corresponding to the control method of the air conditioner. The air conditioner includes a filter screen and an indoor fan; the filter screen is arranged at the air inlet of the indoor unit of the air conditioner.

[0073] The structure of the indoor unit of the air conditioner is as Figure 3 and Figure 4As shown in the figure, the indoor unit includes a filter net 1, an evaporator 2, a panel 3, a first air deflector 4, a second air deflector 5, an air velocity collector 6, a cross-flow fan blade 7, and an air inlet grille 8. The outermost layer of the indoor unit is the panel 3, which serves to protect the internal components of the indoor unit. The air inlet grille 8 is distributed on the panel 3, which can prevent larger foreign objects from entering the interior of the indoor unit and protect the internal components. Behind the air inlet grille 8 is the air inlet 9, where the filter net 1 is installed to filter the air entering the indoor unit. It can effectively intercept larger particulate impurities such as dust, hair, and fibers in the air, avoiding these impurities from adhering to key components such as the evaporator 2. This can not only maintain the heat exchange efficiency of the evaporator but also reduce the wear of the internal components of the indoor unit by dust, extend the service life of the air conditioner, and at the same time help maintain the cleanliness of the indoor air.

[0074] An air velocity collector 6 is installed near the cross-flow fan blade 7, which can monitor the air velocity passing through in real time and accurately. By collecting the air velocity data, the air velocity collector 6 feeds back the information to the control system of the air conditioner. The control system can adjust the operating state of the air conditioner according to the difference between the actual air velocity and the preset air velocity, such as adjusting the rotation speed of the cross-flow fan blade 7, so as to ensure the stability of the air output of the air conditioner and meet the air volume requirements set by the user. Specifically, the air velocity collector 6 is installed at the front end of the volute tongue of the panel body. Installing it at this position can effectively avoid the influence of different up-and-down air deflection angles set by the user on the air output velocity and ensure the authenticity of the air output velocity collection.

[0075] See Figure 2 The structural schematic diagram of an embodiment of the device of the present invention is shown. The control device of this air conditioner may include: an acquisition unit 102 and a control unit 104.

[0076] The acquisition unit 102 is configured to acquire the set temperature, the set wind speed, the inner pipe temperature of the air conditioner, and the air output velocity during the operation of the air conditioner. For the specific functions and processes of this acquisition unit 102, refer to step S110.

[0077] The set temperature and the set wind speed are set by the user. If the user does not make any settings after the air conditioner is turned on, the set temperature and the set wind speed during the previous operation of the air conditioner are taken as the current set temperature and the current set wind speed. Alternatively, the preset set temperature and the preset wind speed in the current operation mode can be taken as the current set temperature and the current set wind speed. The inner pipe temperature is the pipe temperature of the evaporator, which can be collected by a temperature sensor. The air output velocity is the air velocity collected by the air velocity collector 6.

[0078] Among them, when the change in the inner pipe temperature exceeds 1°C, it is considered that the air conditioner system has not yet operated stably. At this time, no subsequent dirt blockage judgment is performed. Only when the change in the inner pipe temperature is less than or equal to 1°C for 3 consecutive minutes, the current inner pipe temperature is recorded and the dirt blockage judgment is performed.

[0079] The control unit 104 is configured to determine whether the filter screen is dirty blocked according to the inner pipe temperature and the air outlet wind speed. For the specific functions and processing of the control unit 104, refer to step S120.

[0080] When the air in the environment flows into the indoor unit through the filter screen, dust and other impurities in the air will adhere to the filter screen. After a long time, if too much dust adheres, it will be dirty blocked, resulting in a reduction in the air intake volume of the indoor unit and a decrease in the heat exchange efficiency of the evaporator. The reduction in the air intake volume and the heat exchange efficiency will further affect the air outlet wind speed and the pipe temperature of the evaporator. Therefore, it is possible to determine whether the filter screen is dirty blocked through the inner pipe temperature and the air outlet wind speed.

[0081] In some embodiments, the control unit 104 determines whether the filter screen is dirty blocked according to the inner pipe temperature and the air outlet wind speed, including: in the cooling mode, judging the magnitudes of the inner pipe temperature and the air outlet wind speed; if the inner pipe temperature is less than a preset first inner pipe temperature and the air outlet wind speed is less than a preset air outlet wind speed, it is determined that the filter screen is dirty blocked; in the heating mode, judging the magnitudes of the inner pipe temperature and the air outlet wind speed; if the inner pipe temperature is greater than a preset second inner pipe temperature and the air outlet wind speed is less than a preset air outlet wind speed, it is determined that the filter screen is dirty blocked.

[0082] By monitoring and analyzing the inner pipe temperature and the air outlet wind speed in both the cooling and heating modes, the dirty blocked condition of the filter screen can be accurately identified.

[0083] When the filter screen is dirty blocked, the resistance to air inflow increases significantly. At this time, if the fan speed remains unchanged, the amount of air that can enter the air conditioner decreases, which leads to a decrease in the blown wind speed. Therefore, when the actual air outlet wind speed is less than the preset air outlet wind speed, it indicates that the air flow path inside the air conditioner encounters an obstacle. The preset air outlet wind speed is the wind speed standard that should be achieved when the filter screen is normal and the fan is operating normally. The internal fan operates at a set speed and can provide a stable air flow under normal circumstances.

[0084] Since the refrigerant flow direction is different in the cooling and heating modes, there are two cases for judging whether the filter screen is dirty or blocked based on the inner pipe temperature. During cooling, under normal conditions, when a sufficient amount of indoor air flows through the evaporator surface at an appropriate velocity, heat exchange can be fully carried out, the refrigerant can stably absorb heat, and the inner pipe temperature will also be maintained within a reasonable range. The preset first inner pipe temperature is the lower limit of the temperature set based on this normal working condition. When the filter screen becomes dirty or blocked, the amount of air passing through the evaporator decreases, and then the pipe temperature of the evaporator drops. Therefore, when the actually monitored inner pipe temperature is lower than the preset first inner pipe temperature, it is considered that the filter screen may be dirty or blocked. During heating, the evaporator is converted into a condenser. When the filter screen becomes dirty or blocked, the amount of air passing through the condenser decreases, and then the pipe temperature of the condenser rises. Therefore, when the actually monitored inner pipe temperature is higher than the preset second inner pipe temperature, it is considered that the filter screen may be dirty or blocked. The preset second inner pipe temperature is the upper limit of the inner pipe temperature under normal heating mode conditions.

[0085] By combining the inner pipe temperature and the air outlet velocity to judge whether the filter screen is dirty or blocked, the situation of the filter screen being dirty or blocked can be detected in a timely manner, the decrease in heat exchange efficiency caused by the filter screen blockage can be avoided, thereby verifying the service life of the air conditioner and improving indoor comfort.

[0086] In some embodiments, in the cooling mode, the preset first inner pipe temperature is directly proportional to the set air volume level and the set temperature, and the preset air outlet velocity is directly proportional to the set air volume level; in the heating mode, the preset second inner pipe temperature is inversely proportional to the set air volume level, the preset second inner pipe temperature is directly proportional to the set temperature, and the preset air outlet velocity is directly proportional to the set air volume level.

[0087] In the cooling mode, the higher the set air volume level, the more air passes through the evaporator per unit time. More air exchanges heat with the evaporator, causing the refrigerant in the evaporator to absorb more heat, accelerating the evaporation speed, and the temperature of the evaporator will relatively increase. Therefore, the preset first inner pipe temperature increases as the set air volume level rises, and the two are directly proportional. For example, when set to the low air volume level, the air velocity is slow, the heat exchange amount with the evaporator is small, and the preset first inner pipe temperature may be 8°C; when set to the high air volume level, the air quickly passes through the evaporator, the heat exchange amount increases, and the preset first inner pipe temperature may rise to 12°C. The higher the set temperature, the lower the cooling degree the air conditioner needs to reach. At this time, the evaporator does not need to cool the air to a very low temperature, and the evaporation temperature of the refrigerant is relatively high, resulting in a corresponding increase in the inner pipe temperature. For instance, when the set temperature is 20°C, the preset first inner pipe temperature may be 10°C; when the set temperature is increased to 25°C, the preset first inner pipe temperature may become 13°C.

[0088] In the heating mode, the higher the set air duct level, the faster the air passes through the condenser, and the more heat is carried away, resulting in a relatively lower temperature of the condenser. Therefore, the preset second inner pipe temperature decreases as the set air duct level increases, and the two are inversely proportional. The higher the set temperature, the more heat the air conditioner needs to provide to raise the indoor temperature. This requires a higher refrigerant temperature in the condenser, which also increases the inner pipe temperature. Thus, the preset second inner pipe temperature is directly proportional to the set temperature.

[0089] Regardless of whether it is in the cooling mode or the heating mode, the set air duct level is the setting of the fan speed. The higher the air duct level, the faster the fan speed and the greater the blown air speed. For example, at the low air duct level, the fan speed is slow, and the preset air outlet speed may be 2 m / s; while at the high air duct level, the fan operates at high speed, and the preset air outlet speed may reach 5 m / s.

[0090] Considering the influence of the set air duct level and the set temperature on the preset inner pipe temperature and the preset air outlet speed can more accurately reflect the actual operating state of the air conditioner. Under different set conditions, the normal operating parameters of the air conditioner will be different. By establishing this relationship for judgment, misjudgment caused by different set conditions can be avoided.

[0091] The control unit 104 is further configured to, if it is determined that the filter screen is dirty and blocked, determine the rotational speed adjustment amount of the inner fan according to the set temperature and the set air duct level, and increase the rotational speed of the inner fan according to the rotational speed adjustment amount. The specific functions and processing of the control unit 104 are shown in step S130.

[0092] The dirty and blocked filter screen will hinder air circulation, reduce the air volume entering the evaporator or condenser, and lower the heat exchange efficiency. By increasing the rotational speed of the inner fan, the air flow rate can be increased to make up for the insufficient air volume caused by the dirty and blocked filter screen, enabling the air to fully contact the heat exchanger, ensuring the cooling or heating capacity of the air conditioner, and allowing the indoor temperature to reach the set temperature as much as possible. Different set temperatures and set air duct levels represent different user requirements for the indoor environment. By flexibly adjusting the air volume and air supply speed in combination with the set temperature and the set air duct level, the rotational speed of the inner fan can be adjusted more in line with the actual needs to keep the indoor temperature stable and improve comfort.

[0093] In some embodiments, the set air duct level includes a high air duct level, a medium air duct level, and a low air duct level. The control unit 104 determines the rotational speed adjustment amount of the inner fan according to the set temperature and the set air duct level, including:

[0094] The control unit 104 is specifically further configured to, when the set air duct level is the high air duct level, the rotational speed adjustment amount of the inner fan is the preset first rotational speed adjustment amount. The specific functions and processing of the control unit 104 are shown in step S210.

[0095] Since users originally expect a relatively large air volume to achieve rapid air conditioning (such as rapid cooling or heating) under a high wind setting, but dirty blockage causes insufficient air flow, a preset first rotational speed adjustment amount is given at this time, allowing the internal fan to operate at a relatively high speed to increase the air throughput. Although the dirty blockage will hinder air flow, increasing the rotational speed of the internal fan can still improve the air volume to a certain extent, and try to meet the user's demand for rapidly adjusting the indoor environment under the high wind setting. For example, in a hot summer, when the air conditioner is dirty blocked and still in the high wind setting, the internal fan increases its speed according to the preset first rotational speed adjustment amount, enabling more air to contact the evaporator and maintaining the refrigeration effect as much as possible.

[0096] The control unit 104 is specifically further configured such that when the set wind setting is the medium wind setting, the rotational speed adjustment amount of the internal fan is a preset second rotational speed adjustment amount. For the specific functions and processing of this control unit 104, refer to step S220.

[0097] The air volume requirement for the medium wind setting is moderate. In the case of dirty blockage, the air circulation is not smooth. The preset second rotational speed adjustment amount moderately increases the rotational speed of the internal fan, which can overcome the air resistance caused by the dirty blockage to a certain extent and increase the air flow, without overloading the internal fan as in the high wind setting. For example, when the indoor temperature is already close to the set temperature, the air conditioner is in the medium wind setting but there is dirty blockage, and the internal fan adjusts its speed according to the preset second rotational speed adjustment amount, which can maintain a relatively stable indoor environment while ensuring a certain air circulation and is relatively energy-efficient.

[0098] The control unit 104 is specifically further configured such that when the set wind setting is the low wind setting, the rotational speed adjustment amount of the internal fan is a preset third rotational speed adjustment amount. For the specific functions and processing of this control unit 104, refer to step S230.

[0099] The low wind setting is mainly used for scenarios with higher noise requirements or relatively mild air conditioning needs. In the case of dirty blockage, although the air flow decreases, by setting the third rotational speed adjustment amount, the internal fan increases the air volume by a relatively small increase in rotational speed, improving the problem of insufficient air circulation caused by dirty blockage without increasing too much noise. For example, when sleeping at night, the air conditioner is in the low wind setting and there is dirty blockage, and the internal fan finely adjusts its speed according to the preset third rotational speed adjustment amount, which can ensure a certain circulation of indoor air to maintain a comfortable temperature without affecting the sleep quality due to noise.

[0100] Among them, the preset first rotational speed adjustment amount > the preset second rotational speed adjustment amount > the preset third rotational speed adjustment amount; in the refrigeration mode, the preset first rotational speed adjustment amount, the preset second rotational speed adjustment amount, and the preset third rotational speed adjustment amount are all inversely proportional to the set temperature; in the heating mode, the preset first rotational speed adjustment amount, the preset second rotational speed adjustment amount, and the preset third rotational speed adjustment amount are all directly proportional to the set temperature.

[0101] When the air conditioner is cooling, if the set temperature is relatively high, the temperature range that needs to be reduced indoors is relatively small. At this time, there is no need for the air conditioner to operate with a strong cooling capacity, and the adjustment amount of the inner fan speed will be relatively small, and the speed of the inner fan will not be too high. If the set temperature is relatively low, a larger temperature reduction is required indoors. At this time, the air conditioner needs to operate with a stronger cooling capacity, and the speed of the inner fan increases. Therefore, the adjustment amount of the speed is inversely proportional to the set temperature. Correspondingly, in the heating mode, a higher wind speed is required when the set temperature is high, and a lower wind speed is required when the set temperature is low. Therefore, the adjustment amount of the speed is directly proportional to the set temperature.

[0102] The set temperature reflects the user's expectation for the indoor environmental temperature, and the set air deflector reflects the user's demand for the indoor air flow rate and comfort. By adjusting the speed of the inner fan considering these two factors, the air conditioning system can accurately adjust its operating state according to the actual usage scenario and user needs, and can flexibly adjust the speed of the inner fan according to different degrees of dirt blockage and the temperature and air deflector set by the user, balancing energy conservation and performance, and improving the user experience.

[0103] In some embodiments, the air conditioner further includes a fresh air device; the fresh air device includes a fresh air fan. The control unit 104 is specifically further configured to: after the air conditioner is turned off, if it is determined that the filter screen is dirty blocked, control the fresh air fan to operate and the inner fan to operate in reverse within a preset first time to clean the filter screen.

[0104] After the air conditioner is turned off, the air deflector is closed. At this time, the operation of the fresh air fan and the reverse operation of the inner fan can blow away the dust on the filter screen and clean the filter screen. Specifically, the function of the fresh air fan is to introduce fresh outdoor air into the room. After the air conditioner is turned off and it is determined that the filter screen is dirty blocked, turning on the fresh air fan can allow outdoor air to enter the air conditioner interior. Since the outdoor air has a certain pressure and flow rate, it can provide power to blow away the dust on the filter screen. Controlling the inner fan to operate in reverse changes the direction of air flow, which can further enhance the impact force on the dust on the filter screen, cooperate with the air flow introduced by the fresh air fan, and blow the filter screen from different directions, making it easier for the dust to fall off from the pores of the filter screen. The specific value of the preset first time is determined according to factors such as the model of the air conditioner, the type of the filter screen, and the degree of dirt blockage. A suitable time range can be found through experiments and tests, which can ensure the cleaning effect while taking into account energy conservation and equipment life, such as 2 minutes.

[0105] In some embodiments, the control unit 104 is specifically further configured to: after cleaning the filter screen, if it is continuously determined that the filter screen is not dirty blocked within a preset second time, clean the filter screen again.

[0106] The preset second time can be set to 3 months. After the filter screen is cleaned, if no dirty blockage of the filter screen is detected within the next 3 months, the above control of the internal fan and fresh air fan is executed again 3 months after the first dirty blockage to clean the filter screen. Even when there is no obvious dirty blockage of the filter screen, after a period of use, fine impurities such as dust may gradually accumulate on the filter screen. Regular cleaning can timely remove these potential accumulated dust and prevent it from accumulating to the extent that it affects the cooling, heating effect and ventilation efficiency of the air conditioner, ensuring that the air conditioner always maintains good operating performance and maintains a comfortable indoor temperature and air quality.

[0107] Figure 5 It is a schematic flow chart of the method for judging dirty blockage in the air conditioner cooling mode. As Figure 5 shown, this method includes:

[0108] Step 1, after the air conditioner is turned on for cooling, obtain the cooling temperature set by the user. If the set temperature ≤ 21°C, then execute Step 2; if 21°C < set temperature ≤ 25°C, then execute Step 3; if the set temperature > 25°C, then execute Step 4.

[0109] Step 2, obtain the internal pipe temperature and the air outlet wind speed of the air conditioner, and judge the wind gear where the internal fan is located at this time. When the internal fan is in the high wind gear, if the air outlet wind speed < s1 and the internal pipe temperature < t1, the rotation speed of the internal fan increases by 100 r; when the internal fan is in the medium wind gear, if the air outlet wind speed < s2 and the internal pipe temperature < t2, the rotation speed of the internal fan increases by 80 r; when the internal fan is in the low wind gear, if the air outlet wind speed < s3 and the internal pipe temperature < t3, the rotation speed of the internal fan increases by 50 r. s1, s2, s3 are preset wind speeds, s1 > s2 > s3; t1, t2, t3 are preset internal pipe temperatures, t1 > t2 > t3.

[0110] Step 3, obtain the internal pipe temperature and the air outlet wind speed of the air conditioner, and judge the wind gear where the internal fan is located at this time. When the internal fan is in the high wind gear, if the air outlet wind speed < s1 and the internal pipe temperature < t4, the rotation speed of the internal fan increases by 80 r; when the internal fan is in the medium wind gear, if the air outlet wind speed < s2 and the internal pipe temperature < t5, the rotation speed of the internal fan increases by 50 r; when the internal fan is in the low wind gear, if the air outlet wind speed < s3 and the internal pipe temperature < t6, the rotation speed of the internal fan increases by 30 r. t4, t5, t6 are preset internal pipe temperatures, t4 > t5 > t6.

[0111] Step 4, obtain the internal pipe temperature and the air outlet wind speed of the air conditioner, and judge the wind gear where the internal fan is located at this time. When the internal fan is in the high wind gear, if the air outlet wind speed < s1 and the internal pipe temperature < t7, the rotation speed of the internal fan increases by 50 r; when the internal fan is in the medium wind gear, if the air outlet wind speed < s2 and the internal pipe temperature < t8, the rotation speed of the internal fan increases by 60 r; when the internal fan is in the low wind gear, if the air outlet wind speed < s3 and the internal pipe temperature < t9, the rotation speed of the internal fan increases by 20 r. t7, t8, t9 are preset internal pipe temperatures, t1 > t2 > t3.

[0112] Since the processing and functions implemented by the device in this embodiment are basically corresponding to the embodiments, principles, and examples of the foregoing method, for the details not described in the description of this embodiment, reference can be made to the relevant descriptions in the foregoing embodiments, and details will not be repeated here.

[0113] By adopting the technical solution of the present invention, when the air conditioner is operating, it is determined whether the filter screen is dirty blocked according to the inner pipe temperature and the outlet air speed. If it is determined that the filter screen is dirty blocked, the rotation speed adjustment amount of the indoor fan is determined according to the set temperature and the set air damper, and the rotation speed of the indoor fan is increased according to the rotation speed adjustment amount. When it is determined that the filter screen is dirty blocked by judging according to the inner pipe temperature and the outlet air speed, the rotation speed adjustment amount of the indoor fan is determined according to the set temperature and the set air damper to increase the rotation speed of the indoor fan, thereby making up for the insufficient air volume caused by the dirty filter screen, ensuring the refrigeration or heating capacity of the air conditioner, and improving the indoor comfort.

[0114] According to an embodiment of the present invention, there is also provided an air conditioner corresponding to the control device of the air conditioner. The air conditioner may include: the control device of the air conditioner described above.

[0115] Since the processing and functions implemented by the air conditioner in this embodiment are basically corresponding to the embodiments, principles, and examples of the foregoing device, for the details not described in the description of this embodiment, reference can be made to the relevant descriptions in the foregoing embodiments, and details will not be repeated here.

[0116] By adopting the technical solution of the present invention, when the air conditioner is operating, it is determined whether the filter screen is dirty blocked according to the inner pipe temperature and the outlet air speed. If it is determined that the filter screen is dirty blocked, the rotation speed adjustment amount of the indoor fan is determined according to the set temperature and the set air damper, and the rotation speed of the indoor fan is increased according to the rotation speed adjustment amount. When it is determined that the filter screen is dirty blocked by judging according to the inner pipe temperature and the outlet air speed, the rotation speed adjustment amount of the indoor fan is determined according to the set temperature and the set air damper to increase the rotation speed of the indoor fan, thereby making up for the insufficient air volume caused by the dirty filter screen, ensuring the refrigeration or heating capacity of the air conditioner, and improving the indoor comfort.

[0117] According to an embodiment of the present invention, there is also provided a storage medium corresponding to the control method of the air conditioner. The storage medium includes a stored program, wherein when the program runs, it controls the device where the storage medium is located to execute the control method of the air conditioner described above.

[0118] Since the processing and functions implemented by the storage medium in this embodiment are basically corresponding to the embodiments, principles, and examples of the foregoing method, for the details not described in the description of this embodiment, reference can be made to the relevant descriptions in the foregoing embodiments, and details will not be repeated here.

[0119] Adopting the technical solution of the present invention, when the air conditioner is running, it is determined whether the filter screen is clogged according to the inner pipe temperature and the air outlet wind speed. If it is determined that the filter screen is clogged, the rotation speed adjustment amount of the inner fan is determined according to the set temperature and the set wind gear, and the rotation speed of the inner fan is increased according to the rotation speed adjustment amount. By determining that the filter screen is clogged based on the inner pipe temperature and the air outlet wind speed, and determining the rotation speed adjustment amount of the inner fan according to the set temperature and the set wind gear to increase the rotation speed of the inner fan, the insufficient air volume caused by the clogged filter screen can be compensated, the cooling or heating capacity of the air conditioner can be ensured, and the indoor comfort can be improved.

[0120] According to an embodiment of the present invention, there is also provided a computer program product corresponding to the control method of the air conditioner. The computer program product includes a computer program, and when the computer program product is processed and executed, the steps of the above-mentioned control method of the air conditioner are implemented.

[0121] Since the processing and functions implemented by the computer program product of this embodiment are basically corresponding to the embodiments, principles and examples of the foregoing method, for the details not described in the description of this embodiment, reference can be made to the relevant descriptions in the foregoing embodiments, and no further elaboration will be made here.

[0122] Adopting the technical solution of the present invention, when the air conditioner is running, it is determined whether the filter screen is clogged according to the inner pipe temperature and the air outlet wind speed. If it is determined that the filter screen is clogged, the rotation speed adjustment amount of the inner fan is determined according to the set temperature and the set wind gear, and the rotation speed of the inner fan is increased according to the rotation speed adjustment amount. By determining that the filter screen is clogged based on the inner pipe temperature and the air outlet wind speed, and determining the rotation speed adjustment amount of the inner fan according to the set temperature and the set wind gear to increase the rotation speed of the inner fan, the insufficient air volume caused by the clogged filter screen can be compensated, the cooling or heating capacity of the air conditioner can be ensured, and the indoor comfort can be improved.

[0123] In summary, it is easy for those skilled in the art to understand that, on the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0124] The above are only the embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A method for controlling an air conditioner, characterized in that: The air conditioner comprises a filter and an internal fan; the filter is arranged at the air inlet of the indoor unit of the air conditioner; The method comprises: During the operation of the air conditioner, obtaining a set temperature, a set windshield, an inner pipe temperature of the air conditioner, and an air outlet speed; Determine whether the filter screen is dirty or clogged according to the inner tube temperature and the air outlet speed; If it is determined that the filter is clogged, the speed adjustment amount of the internal fan is determined according to the set temperature and the set windshield, and the speed of the internal fan is increased according to the speed adjustment amount.

2. The air conditioner control method according to claim 1, characterized in that: Determining whether the filter screen is dirty or clogged according to the inner tube temperature and the air outlet speed includes: In cooling mode, determining the magnitude of the inner pipe temperature and the magnitude of the air outlet speed; If the inner tube temperature is lower than the preset first inner tube temperature, and the outlet wind speed is lower than the preset outlet wind speed, it is determined that the filter screen is dirty and clogged; and / or, In the heating mode, determining the magnitude of the inner pipe temperature and the magnitude of the air outlet speed; If the inner tube temperature is greater than the preset second inner tube temperature, and the air outlet speed is less than the preset air outlet speed, it is determined that the filter screen is dirty and clogged.

3. The air conditioner control method according to claim 2, characterized in that: In the cooling mode, the preset first inner tube temperature is proportional to the set windshield and the set temperature, and the preset air outlet speed is proportional to the set windshield; In the heating mode, the preset second inner tube temperature is inversely proportional to the set windshield, the preset second inner tube temperature is directly proportional to the set temperature, and the preset air outlet speed is directly proportional to the set windshield.

4. The air conditioner control method according to any one of claims 1 to 3, characterized in that: The set windshield includes a high windshield, a middle windshield, and a low windshield; Determining the speed adjustment amount of the internal fan according to the set temperature and the set windshield includes: When the set windshield is the high windshield, the speed adjustment amount of the internal fan is a preset first speed adjustment amount; When the set windshield is the middle windshield, the speed adjustment amount of the inner fan is a preset second speed adjustment amount; When the set windshield is the low windshield, the speed adjustment amount of the internal fan is a preset third speed adjustment amount; Among them, the preset first speed adjustment amount>the preset second speed adjustment amount>the preset third speed adjustment amount; in the cooling mode, the preset first speed adjustment amount, the preset second speed adjustment amount, and the preset third speed adjustment amount are all inversely proportional to the set temperature; in the heating mode, the preset first speed adjustment amount, the preset second speed adjustment amount, and the preset third speed adjustment amount are all directly proportional to the set temperature.

5. The air conditioner control method according to any one of claims 1 to 4, characterized in that: The air conditioner also includes a fresh air device; the fresh air device includes a fresh air fan; The method further comprises: After the air conditioner is turned off, if it is determined that the filter is dirty and clogged, the fresh air fan is controlled to run and the internal fan is controlled to reversely run within a preset first time to clean the filter.

6. The air conditioner control method according to claim 5, characterized in that: Also includes: After the filter screen is cleaned, if it is determined that the filter screen is not dirty or blocked for a preset second time, the filter screen is cleaned again.

7. A control device for an air conditioner, characterized in that: The air conditioner comprises a filter and an internal fan; the filter is arranged at the air inlet of the indoor unit of the air conditioner; The device comprises: An acquisition unit is configured to acquire a set temperature, a set wind speed, an inner pipe temperature of the air conditioner, and an air outlet speed during operation of the air conditioner; A control unit is configured to determine whether the filter screen is dirty or clogged according to the inner tube temperature and the air outlet speed; The control unit is further configured to determine the speed adjustment amount of the internal fan according to the set temperature and the set windshield if it is determined that the filter is dirty and clogged, and increase the speed of the internal fan according to the speed adjustment amount.

8. An air conditioner, characterized in that: include: The air conditioner control device as claimed in claim 7.

9. A storage medium, characterized in that: The storage medium includes a stored program, wherein when the program is executed, the device where the storage medium is located is controlled to execute the air conditioner control method according to any one of claims 1 to 6.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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