Air conditioning device

Abstract

The invention discloses an air conditioning device which comprises an air conditioning body, an air pipe, an air outlet, a filtering module, a fan and a controller. The air conditioning main body is used for introducing fresh air or outputting conditioned air; one end of the air pipe is connected with the air conditioning main body; the air outlet is formed indoors and connected with the other end of the air pipe, and the air pipe and the indoor space are communicated. The filtering module is arranged on the inner side of the air outlet and used for filtering harmful substances in the adjusted air entering the room; the fan is arranged in the air conditioning main body and is used for forming a one-way pressure difference in the air pipe; the controller is connected with the fan, is preset with a maximum static pressure value and a maximum static pressure change value and is configured to obtain an initial static pressure value, and the difference between the maximum static pressure value and the maximum static pressure change value is compared with the initial static pressure value; and according to the comparison result, the filth blockage level of the filtering module is determined by combining the static pressure change value with the operation duration of the fan or the filth blockage level of the filtering module is determined by adopting the operation duration of the fan. According to the invention, a user can timely and accurately know the filth blockage condition of the filtering module, timely replacement or cleaning is realized, the health risk is reduced, and the user experience is improved.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more specifically to an air conditioning device. Background Technology

[0002] Existing air conditioning products regulate indoor temperature and improve indoor air quality by using filters; however, problems such as insufficient airflow, inadequate air volume, and a decline in air quality level caused by the continuous accumulation of dust in the filters will gradually become apparent.

[0003] Existing technologies typically quantify the dust holding capacity of a filter by accumulating the fan's operating time, and then trigger a dirt blockage alarm and filter replacement reminder when the fan's cumulative operating time reaches a set threshold.

[0004] The problem with existing technology is that it cannot monitor the level of filter clogging in real time and cannot accurately define and quantify the level of clogging. This often results in users not being able to replace the filter in time, which can affect their health and lead to a poor user experience.

[0005] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0006] In view of the fact that the air conditioning devices mentioned in the background art cannot accurately define and quantify the degree of filter clogging and cannot monitor the degree of clogging in real time, this invention proposes an air conditioning device that determines the degree of clogging of the filter module by combining the static pressure change value with the fan running time or the fan running time method based on the initial static pressure value, thereby improving the accuracy and real-time nature of filter clogging quantification.

[0007] To achieve the above-mentioned objectives, the present invention employs the following technical solution: An air conditioning device includes an air conditioning body, an air duct, an air outlet, a filter module, a fan, and a controller; The air conditioning unit is used to introduce fresh air or output conditioned air. One end of the duct is connected to the air conditioning unit and is used to deliver conditioned air; The air outlet is located indoors and connected to the other end of the air duct, connecting the air duct to the indoor environment; The filter module is located inside the air outlet and is used to filter harmful substances in the conditioned air entering the room. The fan is installed inside the air conditioning unit to create a one-way pressure difference within the air duct. The controller is connected to the fan and is preset with a maximum static pressure value and a maximum static pressure change value. It is configured to obtain an initial static pressure value, compare the difference between the maximum static pressure value and the maximum static pressure change value with the initial static pressure value, and determine the clogging level of the filter module based on the comparison result by combining the static pressure change value with the operating time of the fan or by using the operating time of the fan.

[0008] The air conditioning device of the present invention adopts different methods to determine the degree of dirt and clogging of the filter module according to the different initial static pressure values, i.e., the installation static pressure values. This adapts to the influence of different factors during operation on the degree of dirt and clogging of the filter module at different initial static pressures, making the degree of dirt and clogging of the filter module more accurate during the use of the air conditioning device. As a result, users can understand the dirt and clogging status of the filter module in a timely and accurate manner, replace or clean it in time, reduce health risks, and improve the user experience.

[0009] In some specific embodiments, different methods for determining the level of fouling based on a comparison between the difference between the maximum static pressure value and the maximum static pressure change value and the initial static pressure value include: If the initial static pressure value does not exceed the difference between the maximum static pressure value and the maximum static pressure change value, then the clogging level of the filter module is determined based on the static pressure change value and the operating time of the fan; the static pressure change value is the difference between the real-time static pressure value and the initial static pressure value. If the initial static pressure value exceeds the difference between the maximum static pressure value and the maximum static pressure change value, the clogging level of the filter module is determined based on the operating time of the fan.

[0010] In this embodiment, when the initial static pressure is relatively low, the variation in static pressure has a significant impact on the clogging of the filter module. Therefore, it is more accurate to determine the clogging level by combining the static pressure variation with the fan's operating time. When the initial static pressure is relatively high, the range of static pressure variation is small due to the limitation of the maximum static pressure. Therefore, it is more reasonable to classify the clogging level of the filter module by operating time.

[0011] In some specific embodiments, determining the clogging level of the filter module based on the static pressure change value combined with the operating time of the fan includes: Multiple consecutive static pressure change threshold intervals are preset, all of which are less than the maximum static pressure change value; Multiple consecutive duration threshold intervals can be preset; The static pressure change threshold intervals arranged from smallest to largest, and the intervals exceeding the maximum static pressure change value, respectively correspond to the duration threshold intervals arranged from smallest to largest to form a first dirt and blockage level table; Obtain the real-time static pressure value, calculate the difference between the real-time static pressure value and the initial static pressure value, i.e., the static pressure change value; record the operating time of the fan within the static pressure change threshold range to which the static pressure change value belongs, and record it as the first operating time; The clogging level of the filter module is determined based on the position of the combination of the static pressure change value and the first operating time in the first clogging level table.

[0012] The air conditioning device in this embodiment divides the period of dirt blockage level into multiple level intervals by using multiple static pressure change threshold intervals from small to large and each static pressure change threshold interval corresponds to a duration threshold interval from small to large. The dirt blockage level is determined by the level interval where the static pressure difference and the first operating time combination are located, which is not only convenient and reasonable, but also improves the determination efficiency and accuracy.

[0013] In some specific embodiments, each of the duration threshold intervals forms a semi-closed interval greater than or equal to zero; the controller is configured to clear the first operating duration and reset the timing when the interval to which the static pressure change value belongs changes from one of the static pressure change threshold intervals or an interval exceeding the maximum static pressure change value to another; the clogging level of the filter module is determined based on the combination of the current static pressure change value and the zero value of the first operating duration.

[0014] In this embodiment, when the detected static pressure difference is determined to be the first time entering a static pressure change threshold range, the air conditioning device determines the level of clogging by combining the current static pressure difference and the first operating time of zero value. This further limits the value of the first operating time when the static pressure difference changes within the static pressure change range, thereby improving the rationality and accuracy of the clogging level.

[0015] In some specific embodiments, the controller pre-stores a data table that includes at least a plurality of different static pressure values ​​within a preset static pressure range and the fan power and fan speed corresponding to a specific air volume achieved thereunder; The controller is configured to obtain the operating power of the fan and obtain the fan power that is closest to the operating power in the data table, and the corresponding static pressure value is the current real-time static pressure value. The operation of the fan is controlled according to the fan speed corresponding to the real-time static pressure value.

[0016] The air conditioning device in this embodiment uses a data table of static pressure values ​​for a specific air volume, fan power, and fan speed, and obtains the static pressure value corresponding to the fan power closest to the operating power to achieve a real-time static pressure value. It controls the fan operation based on the fan speed corresponding to the real-time static pressure value, thereby not only achieving a constant air volume function, but also obtaining the dirt and clogging level based on the static pressure difference between the real-time static pressure value and the initial static pressure value. By using the real-time static pressure value to achieve constant air volume control and determine the dirt and clogging level, it improves control efficiency and user experience.

[0017] In some specific embodiments, the controller is configured to set a time and to cyclically acquire the operating power of the fan, and to identify the real-time static pressure value when the operating power exceeds the fan power of the next higher level or the fan power of the previous real-time static pressure value in the data table for the set time.

[0018] The air conditioning device in this embodiment controls the real-time static pressure value by recognizing changes in operating power, thereby reducing the frequency of real-time static pressure value recognition, improving the controller's control efficiency, and reducing power consumption.

[0019] In some specific embodiments, the controller has a preset threshold for the fan operating time, and is configured as follows: The cumulative operating time of the aforementioned fan is recorded as the second operating time; The second operating time is compared with the fan operating time threshold in a loop; if the second operating time reaches the fan operating time threshold, the timing stops, the real-time static pressure value is identified, the second operating time is reset to zero, and the timing restarts.

[0020] The air conditioning device in this embodiment controls the identification cycle of real-time static pressure value through the second operating time of the fan, preventing other methods such as operating power control from failing to identify real-time static pressure value, forming a combination of hardware and software redundant control, and improving the reliability of real-time static pressure value identification and control.

[0021] In some specific embodiments, determining the clogging level of the filter module based on the operating time of the fan includes: Multiple consecutive duration threshold intervals can be preset; The duration threshold intervals are arranged from smallest to largest to form a second dirt and blockage level table; The cumulative operating time of the aforementioned fan is recorded as the third operating time; The clogging level of the filter module is determined based on its position in the second clogging level table according to the third operating time.

[0022] In this embodiment, when the initial static pressure is relatively low, the variation in static pressure has a significant impact on the clogging of the filter module. Therefore, it is more accurate to determine the clogging level by combining the static pressure variation with the fan's operating time. When the initial static pressure is relatively high, the range of static pressure variation is small due to the limitation of the maximum static pressure. Therefore, it is more reasonable to classify the clogging level of the filter module by operating time.

[0023] In some specific embodiments, the controller has a pre-stored data table that includes at least a plurality of different static pressure values ​​within a preset static pressure range and the fan power corresponding to a specific air volume achieved thereunder; The controller is configured to obtain the operating power of the fan initially or the operating power of the fan after the filter module is reset, and to obtain the fan power that is closest to the operating power in the data table, the corresponding static pressure value of which is the initial static pressure value.

[0024] The air conditioning device in this embodiment obtains the initial static pressure value by forming a data table of different static pressure values ​​under a specific air volume and their corresponding fan power, as well as the fan operating power obtained during initial operation or filter module reset. It can share the data table with the real-time static pressure value identification, which is simple and efficient.

[0025] In some specific embodiments, a control panel is also included, which includes a control module and a display module; the control module is communicatively connected to the controller and electrically connected to the display module. The controller is configured to send the level of clogging of the filter module to the control module; the control module controls the display module to display the level of clogging in real time.

[0026] The air conditioning device in this embodiment displays the level of dirt and clogging in real time through the panel, making it convenient for users to check at any time and improving the user experience.

[0027] Other features and advantages of the present invention will become clearer after reading the detailed embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the composition and connection structure of the control components according to an embodiment; Figure 2 This is a schematic diagram of the composition and connection structure of the control components according to an embodiment; Figure 3 This is a schematic diagram of the control flow of an air conditioning device according to an embodiment; Figure 4 This is a schematic diagram of the control flow of an air conditioning device according to an embodiment; Figure 5 This is a schematic diagram of the control flow of an air conditioning device according to an embodiment; Figure 6 This is a schematic diagram of the control flow of an air conditioning device according to an embodiment; Figure 7 This is a schematic diagram of the control flow of an air conditioning device according to an embodiment; Figure 8 This is a schematic diagram of the control flow of an air conditioning device according to an embodiment; Figure 9 This is a schematic diagram of the control flow of an air conditioning device according to an embodiment; Figure 10 This is a schematic diagram of the flow and signal transmission of an air conditioning device according to an embodiment; Figure 11 This is a data table according to an embodiment; Figure 12 This is a first clogging level table according to an embodiment; Figure 13 This is a second clogging level table according to an embodiment.

[0030] Figure label, 1. Controller; 2. Fan; 3. Control panel; 31. Control module; 32. Display module; 4. Power detection module. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] The following disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0037] Air conditioners execute a refrigeration cycle using a compressor, condenser, expansion valve, and evaporator. The refrigeration cycle involves a series of processes, including compression, condensation, expansion, and evaporation, to cool or heat an indoor space.

[0038] Low-temperature, low-pressure refrigerant enters the compressor, which compresses it into a high-temperature, high-pressure refrigerant gas and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0039] The expansion valve expands the high-temperature, high-pressure liquid refrigerant that condenses in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the expanded refrigerant in the expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves its cooling effect by utilizing the latent heat of refrigerant evaporation to exchange heat with the material being cooled. Throughout the cycle, the air conditioner regulates the temperature of the indoor space.

[0040] The outdoor unit of an air conditioner refers to the part of the refrigeration cycle that includes the compressor and the outdoor heat exchanger. The indoor unit of an air conditioner includes the indoor heat exchanger, and an expansion valve can be provided in either the indoor or outdoor unit.

[0041] The indoor and outdoor heat exchangers function as either condensers or evaporators. When the indoor heat exchanger is used as a condenser, the air conditioner functions as a heater in heating mode; when the indoor heat exchanger is used as an evaporator, the air conditioner functions as a cooler in cooling mode.

[0042] Reference Figure 1 , Figure 2 , Figure 3 The air conditioning device of the present invention includes an air conditioning body, an air duct, an air outlet, a filter module, and a fan 2.

[0043] The air conditioning unit is used to introduce fresh air and / or output conditioned air; the conditioned air is air carrying cooling or heating generated by the principle of heat pump; the air conditioning unit is a fresh air total heat exchange air conditioning unit that includes the introduction of fresh air, the exchange of heat between fresh air and exhaust stale air, and the temperature regulation of the fresh air after heat exchange, or an air conditioning unit that only regulates indoor air, and this air conditioning unit is a duct air conditioning unit.

[0044] One end of the duct is connected to the main air conditioning unit and is used to deliver conditioned air.

[0045] The air outlet is located indoors and connected to the other end of the air duct, connecting the ventilation duct to the room, and is used to supply conditioned air into the room.

[0046] The filter module is made of an adhesive material and is located inside the air outlet to filter harmful substances in the conditioned air entering the room.

[0047] Fan 2 is installed inside the air conditioning unit to create a one-way pressure difference in the duct, so that the conditioned air is sent into the room from the air outlet at a certain speed.

[0048] The controller 1 is connected to the fan 2 and has preset maximum static pressure value and maximum static pressure change value S1. The maximum static pressure value is the maximum static pressure value that the air conditioning device can withstand, which is often a design parameter and is marked on the machine nameplate.

[0049] Controller 1 is configured as follows: S2. Obtain the initial static pressure value; the initial static pressure value is the static pressure of the newly installed air conditioning unit at the beginning of its use, i.e., the installation static pressure value, or the static pressure value when the filter module is cleaned or reset. S3. Compare the difference between the maximum static pressure value and the maximum static pressure change value with the initial static pressure value; and based on the comparison result, determine the clogging level of the filter module by combining the static pressure change value with the operating time of the fan 2, or determine the clogging level of the filter module by the operating time of the fan 2.

[0050] The air conditioning device of the present invention employs different methods to determine the degree of clogging of the filter module based on the magnitude of the initial static pressure value, i.e., the installation static pressure value. This adapts to the different main influencing factors on the clogging of the filter module during operation when the initial static pressure is different, making the degree of clogging of the filter module more accurate during the use of the air conditioning device. As a result, users can understand the clogging status of the filter module in a timely and accurate manner, replace or clean it in time, reduce health risks, and improve the user experience.

[0051] In some specific embodiments, refer to Figure 1 , Figure 2 , Figure 3 Different methods for determining the fouling level are based on the comparison between the difference between the maximum static pressure value and the maximum static pressure change value and the initial static pressure value. If the initial static pressure value does not exceed the difference between the maximum static pressure value and the maximum static pressure change value, then S4 is used; if the initial static pressure value exceeds the difference between the maximum static pressure value and the maximum static pressure change value, then S5 is used. S4. Determine the clogging level of the filter module based on the static pressure change value and the operating time of fan 2; the static pressure change value is the difference between the real-time static pressure value and the initial static pressure value. S5. Determine the clogging level of the filter module based on the operating time of fan 2.

[0052] In this embodiment, when the initial static pressure value is relatively small, the different static pressure changes have a significant impact on the clogging speed of the filter module, i.e., the dust holding capacity. Therefore, it is more accurate to determine the clogging level by combining the static pressure change value with the operating time of the fan 2. When the initial static pressure value is relatively large, the range of static pressure changes of the air conditioning device is small due to the limitation of the maximum static pressure value. Therefore, it is more reasonable and accurate to classify and determine the clogging level of the filter module by the operating time.

[0053] In some specific embodiments, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 The degree of clogging of the filter module is determined based on the static pressure change value and the operating time of fan 2, including: S41. Preset multiple consecutive static pressure change threshold intervals, all of which are less than the maximum static pressure change value; preset multiple consecutive duration threshold intervals. S42. A first fouling level table is formed by each static pressure change threshold interval, the interval greater than the maximum static pressure change value, and each duration threshold interval. Specifically, each static pressure change threshold interval and the interval exceeding the maximum static pressure change value are arranged from smallest to largest. Each static pressure change threshold interval and the interval exceeding the maximum static pressure change value correspond to each duration threshold interval from smallest to largest, thus forming a first fouling level table with different combinations of multiple static pressure change threshold intervals corresponding to duration threshold intervals. Different combinations of static pressure change threshold intervals and duration threshold intervals correspond to different fouling levels, and the fouling level is determined by the static pressure change threshold interval from largest to smallest corresponding to the duration threshold interval from smallest to largest. S43. Obtain the real-time static pressure value, calculate the difference between the real-time static pressure value and the initial static pressure value, i.e., the static pressure change value; determine the static pressure change threshold range to which the static pressure change value belongs; S44. Obtain the first operating time of fan 2 within the static pressure change threshold range to which the static pressure change value belongs; this is achieved by recording the operating time of fan 2 within the static pressure change threshold range. S45. Determine the clogging level of the filter module based on the position of the combination of static pressure change value and first operating time in the first clogging level table.

[0054] The air conditioning device in this embodiment divides the clogging cycle of the filter module into multiple level intervals by using multiple static pressure change threshold intervals from small to large, and each static pressure change threshold interval corresponds to a time threshold interval from small to large. The clogging cycle is the maximum dust holding capacity. The clogging level is determined by the level interval to which the static pressure change value and the first operating time belong. This is not only convenient and reasonable, but also improves the efficiency and accuracy of determination.

[0055] For example, refer to Figure 12 The static pressure change threshold range includes the range less than or equal to zero, and the ranges A, B, C, and greater than or equal to D; the duration threshold range includes [0, e), [e, ∞), [0, f), [f, m), and [m, ∞).

[0056] The intervals less than or equal to zero correspond to [0, e) and [e, ∞), representing clogging levels of 0 and 1 respectively; level 0 is the lowest clogging level, indicating a clean filter module. Interval A corresponds to [0, e) and [e, ∞), representing clogging levels of 2 and 3 respectively; interval B corresponds to [0, e) and [e, ∞), representing clogging levels of 4 and 5 respectively; interval C corresponds to [0, e) and [e, ∞), representing clogging levels of 6 and 7 respectively; the intervals greater than or equal to D correspond to [0, f), [f, m), and [m, ∞), representing clogging levels of 8, 9, and 10 respectively. D represents the maximum static pressure change.

[0057] In some specific embodiments, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 Each static pressure change threshold interval corresponds to the same time threshold interval; the time threshold intervals corresponding to the intervals exceeding the maximum static pressure change value are different from the time threshold intervals corresponding to each static pressure change threshold interval; each time threshold interval forms a semi-closed interval greater than or equal to zero; each static pressure change threshold interval and the interval greater than the maximum static pressure change value form a full interval, so that the first clogging level table completely divides the clogging cycle, i.e. the maximum dust holding capacity, and also completely divides the complete clogging formation stage of the filter module's life cycle.

[0058] Controller 1 is configured as follows: S43. Obtain the static pressure change value; that is, obtain the real-time static pressure value, calculate the static pressure change value by the difference between the real-time static pressure value and the initial static pressure value, and obtain the static pressure change threshold range in which the static pressure change value is located. S441. Determine whether the static pressure change threshold range to which the static pressure change value belongs has changed; if yes, that is, when the static pressure change value is determined to be in a different static pressure change threshold range than the current static pressure change threshold range, execute S442 and S443; if no, execute S444. S442. Clear the first running time and reset the timer; S443. Determine the clogging level of the filter module based on the combination of the current static pressure change value and the first operating time at zero value; S444. Determine the clogging level of the filter module based on the position of the combination of the current static pressure change value and the first operating time in the first clogging level table.

[0059] In this embodiment, when the detected static pressure change value is determined to have changed from one static pressure change threshold range to another, the air conditioning device determines the level of clogging by combining the current static pressure change value with the first operating time of the zero value. This further limits the value of the first operating time when the static pressure change threshold range where the static pressure change value is located changes, thereby improving the rationality and accuracy of the clogging level.

[0060] In some specific embodiments, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 11 The controller 1 has a data table S431 that includes at least a number of different static pressure values ​​within a preset static pressure range and the power and speed of the fan 2 corresponding to the specific air volume achieved thereunder. Controller 1 is configured as follows: S432. Obtain the operating power of fan 2. The operating power of fan 2 can be obtained by setting up power detection module 4. Power detection module 4 is connected to controller 1 and fan 2 respectively, and detects the operating current and operating voltage of fan 2 and transmits them to controller 1. Controller 1 obtains the operating power based on the received operating current and operating voltage. S433. Obtain the power of fan 2 that is closest to the operating power from the data table. Its corresponding static pressure value is the current real-time static pressure value. S46. Control the operation of fan 2 according to the fan speed corresponding to the real-time static pressure value. The data table can include multiple different static pressure values ​​within the preset static pressure range and the fan power, fan current, and fan speed corresponding to the specific air volume; control the operation of fan 2 by controlling the fan current corresponding to the real-time static pressure value.

[0061] The air conditioning device in this embodiment uses a data table of multiple static pressure values ​​for a specific air volume, fan 2 power, fan 2 speed, and the static pressure value corresponding to the fan 2 power with the closest operating power to the real-time static pressure value. It controls the operation of fan 2 based on the fan 2 speed corresponding to the real-time static pressure value, which not only achieves constant air volume function, but also obtains the dirt and clogging level based on the static pressure difference between the real-time static pressure value and the initial static pressure value. By using the real-time static pressure value to achieve constant air volume control and determine the dirt and clogging level, it improves control efficiency and user experience.

[0062] In some specific embodiments, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 11 Controller 1 is configured with a set time S434, and is configured as follows: S435, Circulate and obtain the operating power of fan 2; S436. Compare the operating power with the fan 2 power of the next higher or lower level corresponding to the previous real-time static pressure value in the data table; if the operating power continues to be set for a period of time that exceeds the fan 2 power of the next higher level or is lower than the fan 2 power of the next lower level corresponding to the previous real-time static pressure value in the data table, then execute S439. S439. Identify the real-time static pressure value corresponding to the operating power.

[0063] Determining whether the operating power continuously exceeds the power of the fan 2 corresponding to the previous real-time static pressure value in the data table for a set time includes determining whether the power of fan 2 is one level higher or lower than the power of fan 2 corresponding to the previous real-time static pressure value. S436. When the operating power exceeds the power of the next higher level of fan 2 corresponding to the previous real-time static pressure value, execute S438; when the operating power does not exceed the power of the next higher level of fan 2 corresponding to the previous real-time static pressure value, execute S437. S437. Determine whether the operating power is lower than the power of the fan 2 at the next lower level corresponding to the previous real-time static pressure value; if yes, execute S438; if no, execute S435. S438. Determine if the timer has exceeded the set time; if yes, execute 439; if no, continue timing and execute S435.

[0064] The air conditioning device in this embodiment controls the cycle of real-time static pressure value identification based on the change in operating power and the duration of the change, thereby reducing the frequency of real-time static pressure value identification, improving the control efficiency of controller 1 and reducing power consumption.

[0065] In some specific embodiments, refer to Figure 1 , Figure 2 , Figure 8 Controller 1 has a preset threshold value S471 for the operating time of fan 2, and is configured as follows: S472, The cumulative operating time of fan 2 is recorded as the second operating time; S473. Compare the second operating time with the operating time threshold of fan 2. If the second operating time reaches the operating time threshold of fan 2, execute S474, S475, and S476 in sequence, and return to S73 from S476. If the second operating time does not reach the operating time threshold of fan 2, return to S472 and continue to accumulate the second operating time of fan 2. S474, Stop timing; S475, Real-time static pressure value identification; S476, Second operation duration reset.

[0066] In this embodiment, the air conditioning device controls the identification cycle of the real-time static pressure value through the second operating time of the fan 2, preventing other methods such as operating power control from failing to identify the real-time static pressure value, forming a combination of soft and hard methods for redundant control, and improving the reliability of real-time static pressure value identification and control.

[0067] In some specific embodiments, refer to Figure 1 , Figure 2 , Figure 9 The degree of clogging of the filter module is determined based on the operating time of fan 2, including: S471. Preset multiple consecutive time threshold intervals; arrange the consecutive time threshold intervals in ascending order to form a second dirt blockage level table; each time threshold interval forms a semi-closed interval greater than or equal to 0; each time threshold interval corresponds to a unique dirt blockage level; each dirt blockage level is a sequential consecutive dirt blockage level. S472, The cumulative operating time of fan 2 is recorded as the third operating time; S473. Determine the clogging level of the filter module based on the position of the third operating time within the time threshold interval in the second clogging level table; that is, the clogging level corresponding to the time threshold interval to which the third operating time belongs is the current clogging level of the filter module.

[0068] In this embodiment, when the initial static pressure is relatively small, the different static pressure changes have a significant impact on the clogging of the filter module. Therefore, it is more accurate to determine the clogging level by combining the static pressure change value with the operating time of the fan 2. When the initial static pressure is relatively large, the range of static pressure changes is small due to the limitation of the maximum static pressure value. Therefore, it is more reasonable to classify the clogging level of the filter module by operating time.

[0069] For example, refer to Figure 13 The clogging level is divided into ten levels; the time threshold range includes [0, t1), [t1, t2), [t2, t3), [t4, t5), [t5, t6), [t6, t7), [t7, t8), [t8, t9), [t9, t10), [t10, t11), which correspond to clogging levels from 0 to 10 respectively; the clogging level corresponding to the time threshold range to which the third operating time belongs is the clogging level of the current filter module.

[0070] In some specific embodiments, refer to Figure 1 , Figure 2 , Figure 11 The controller 1 has a data table that includes at least a number of different static pressure values ​​within a preset static pressure range and the power of the fan 2 corresponding to the specific air volume achieved under these values.

[0071] Controller 1 is configured as follows: Obtain the operating power of fan 2 of the air conditioning unit during initial use or the operating power of fan 2 after cleaning or resetting the filter module; Obtain the power of fan 2 in the data table that is closest to the above operating power, and its corresponding static pressure value is the initial static pressure value.

[0072] The air conditioning device in this embodiment obtains the initial static pressure value by forming a data table of different static pressure values ​​under a specific air volume and the corresponding power of the fan 2, as well as the operating power of the fan 2 obtained during initial operation or when the filter module is reset. It can share the data table with the real-time static pressure value identification, which is simple and efficient.

[0073] In some specific embodiments, refer to Figure 1 , Figure 2 , Figure 10 It also includes a control panel 3, which includes a control module 31 and a display module 32; the control module 31 is communicatively connected to the controller 1 and electrically connected to the display module 32. Controller 1 is configured to send the dirt and clogging level of the filter module to control module 31; control module 31 controls display module 32 to display the dirt and clogging level in real time.

[0074] The air conditioning device in this embodiment displays the level of dirt and clogging in real time through the panel, making it convenient for users to check at any time and improving the user experience.

[0075] The control panel 3 can be a main unit module located on the air conditioning unit; or it can be a wired controller that is connected to the air conditioning unit in communication.

[0076] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0077] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An air conditioning device characterized by comprising: The application relates to an air conditioner, which comprises the following parts: an air conditioner body for introducing fresh air or outputting conditioned air; an air duct, one end of which is connected with the air conditioner body, for conveying the conditioned air; an air outlet, which is arranged in a room and is connected with the other end of the air duct, and is in communication with the air duct and the room; a filter module, which is arranged on the inner side of the air outlet, for filtering harmful substances in the conditioned air entering the room; a fan, which is arranged in the air conditioner body, for forming a one-way pressure difference in the air duct; a controller, which is connected with the fan, is preset with a maximum static pressure value, a maximum static pressure change value, is configured to acquire an initial static pressure value, compare the difference between the maximum static pressure value and the maximum static pressure change value and the initial static pressure value, and determine the dirty blockage level of the filter module according to the comparison result and the running time of the fan or determine the dirty blockage level of the filter module according to the running time of the fan.

2. The air conditioning apparatus according to claim 1, wherein The different dirty blockage level determination methods according to the comparison result of the difference between the maximum static pressure value and the maximum static pressure change value and the initial static pressure value include the following steps: if the initial static pressure value is not more than the difference between the maximum static pressure value and the maximum static pressure change value, the dirty blockage level of the filter module is determined according to the static pressure change value and the running time of the fan; the static pressure change value is the difference between a real-time static pressure value and the initial static pressure value; if the initial static pressure value is more than the difference between the maximum static pressure value and the maximum static pressure change value, the dirty blockage level of the filter module is determined according to the running time of the fan.

3. The air conditioning apparatus according to claim 2, wherein The method for determining the dirty blockage level of the filter module according to the static pressure change value and the running time of the fan includes the following steps: a plurality of continuous static pressure change threshold intervals are preset, and each interval is smaller than the maximum static pressure change value; a plurality of continuous time threshold intervals are preset; the static pressure change threshold intervals are arranged from small to large, and the intervals more than the maximum static pressure change value correspond to the time threshold intervals from small to large to form a first dirty blockage level table; a real-time static pressure value is acquired, the difference between the real-time static pressure value and the initial static pressure value is calculated, and the dirty blockage level of the filter module is determined according to the position of the static pressure change value and the first running time in the first dirty blockage level table. Each time threshold interval forms a semi-closed interval greater than or equal to zero; the controller is configured to empty and restart the first running time when the interval of the static pressure change value changes from one static pressure change threshold interval or the interval more than the maximum static pressure change value to another interval, and determine the dirty blockage level of the filter module according to the combination of the current static pressure change value and the first running time with zero value.

4. The air conditioning apparatus according to claim 3, wherein The controller pre-stores a data table including a plurality of different static pressure values in a preset static pressure range and the fan power and fan rotating speed corresponding to the specific air volume under the static pressure values.

5. The air conditioning apparatus according to claim 3, wherein ​ The controller is configured to acquire the running power of the fan, and acquire the fan power closest to the running power in the data table, and the corresponding static pressure value is the current real-time static pressure value; The fan is controlled according to the fan speed corresponding to the real-time static pressure value.

6. The air conditioning apparatus according to claim 5, wherein The controller is configured with a set time, and is configured to acquire the running power of the fan cyclically, and when the running power exceeds the fan power of a high level or is lower than the fan power of a low level of the fan power corresponding to the last real-time static pressure value in the data table for the set time, the real-time static pressure value is identified.

7. The air conditioning apparatus according to claim 5, wherein The controller is preconfigured with a fan running time threshold, and is configured to: Cumulatively acquire the running time of the fan, which is recorded as a second running time; Cyclically compare the second running time with the fan running time threshold; If the second running time reaches the fan running time threshold, the identification of the real-time static pressure value is stopped, the second running time is cleared and the timing is restarted.

8. The air conditioning apparatus according to claim 2, wherein Determining the dirty block level of the filter module according to the running time of the fan includes: Preconfigure a plurality of continuous time threshold intervals; Arrange the time threshold intervals from small to large to form a second dirty block level table; Cumulatively acquire the running time of the fan, which is recorded as a third running time; Determine the dirty block level of the filter module according to the position of the third running time in the second dirty block level table.

9. The air conditioning apparatus according to any one of claims 1 to 8, wherein The controller pre-stores a data table including at least a plurality of different static pressure values in a preset static pressure range and the fan power corresponding to a specific air volume under the static pressure values; The controller is configured to acquire the running power of the fan for the first time or after the filter module is reset, and acquire the fan power closest to the running power in the data table, and the corresponding static pressure value is the initial static pressure value.

10. The air conditioning apparatus according to claim 9, wherein Further comprising a control panel including a control module and a display module; the control module is in communication connection with the controller and is electrically connected with the display module; The controller is configured to send the dirty block level of the filter module to the control module; the control module controls the display module to display the dirty block level in real time.

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