A dirty block detection device, method, air conditioner and storage medium

Abstract

The application provides a dirty block detection device, method, air conditioner and storage medium. The heat exchange dirty block detection device comprises a shell, a heat exchanger arranged at an opening of the shell, a fan arranged in a cavity enclosed by the shell and the heat exchanger and located at one side of the heat exchanger, a heat exchange air outlet and a pressure detection assembly arranged on the shell, and the pressure detection assembly is used for detecting an actual pressure parameter in the shell. The shell is arranged, the heat exchanger cavity is combined, the fan is arranged in the cavity, when the heat exchanger is dirty blocked, the airflow flowing through the heat exchanger is reduced, the pressure in the shell changes, the pressure detection assembly is arranged to detect the actual pressure parameter in the shell, the dirty block condition of the heat exchanger is determined according to the actual pressure parameter, the dirty block feedback is performed in time according to the dirty block condition, and the accuracy of dirty block detection is ensured.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, specifically to a dirt and blockage detection device, method, air conditioner, and storage medium. Background Technology

[0002] Heat exchangers are used to generate heat energy and exchange heat with air to regulate the ambient temperature. After prolonged use, dust or other dirt will accumulate on the surface of the heat exchanger, resulting in a decrease in heat exchange efficiency. In related technologies, users are usually reminded to clean the heat exchanger after a certain period of time. However, the usage environment of heat exchangers is diverse and the frequency of use varies, so the accuracy of reminding users to clean the heat exchanger based on a preset time is low. Summary of the Invention

[0003] This application provides a dirt and clogging detection device, method, air conditioner, and storage medium, aiming to solve the problem that the accuracy of reminding users of dirt and clogging of heat exchangers in the prior art is low due to the diverse usage environments and varying usage frequencies of heat exchangers and the fact that reminders based on preset durations are not accurate.

[0004] In a first aspect, this application provides a heat exchanger fouling detection device, the heat exchanger fouling detection device comprising:

[0005] The housing includes a heat exchanger located at the opening of the housing, a fan located within the cavity enclosed by the housing and the heat exchanger and situated on one side of the heat exchanger, a heat exchange air outlet and a pressure detection assembly on the housing, the pressure detection assembly being used to detect the actual pressure parameters inside the housing.

[0006] In one possible implementation of this application, the pressure detection component includes: a ventilation hole provided on the housing; the pressure detection component includes a fan blade structure disposed within the ventilation hole; and a speed detector disposed on the fan blade structure.

[0007] In one possible implementation of this application, the pressure detection assembly further includes a mounting bracket disposed within the ventilation hole and a rotary bearing disposed on the mounting bracket. The fan blade structure includes a mounting shaft and a fan blade disposed around the mounting shaft, and the mounting shaft is mounted within the rotary bearing.

[0008] In one possible implementation of this application, the housing is provided with a mounting partition, which divides the interior of the housing into a first chamber and a second chamber. The opening and the heat exchange air outlet are located on opposite sides of the first chamber. The fan is located inside the first chamber, and the ventilation hole is located on the mounting partition.

[0009] Secondly, this application provides a method for detecting heat exchanger fouling, applied to any of the heat exchanger fouling detection devices described in the previous application, the method comprising:

[0010] The fan speed parameter of the fan in the heat exchanger blockage detection device is obtained, and the actual pressure parameter is obtained based on the pressure detection component of the heat exchanger blockage detection device. The actual pressure parameter is a pressure value or a speed value, and the fan speed parameter includes the fan speed and / or the fan speed setting.

[0011] Based on the fan speed parameters and the pressure parameters, the fouling value of the heat exchanger in the heat exchange fouling detection device is determined, and the fouling value is fed back.

[0012] In one possible implementation of this application, determining the fouling value of the heat exchanger in the heat exchange fouling detection device based on the fan speed parameter and the pressure parameter includes:

[0013] Find the preset mapping table corresponding to the speed and pressure parameters, and obtain the standard pressure parameters corresponding to the fan speed;

[0014] Calculate the pressure parameter difference between the standard pressure parameter and the actual pressure parameter;

[0015] If the pressure parameter difference is within the first difference range within a preset time period, then the dirt / clogging value is determined to be zero.

[0016] If the pressure parameter difference is within the second difference range within a preset time period, then the dirt / clogging value is determined to be greater than zero, wherein the first difference range is smaller than the second difference range.

[0017] In one possible implementation of this application, the second difference interval includes a first sub-interval and a second sub-interval, wherein the first sub-interval is larger than the second sub-interval;

[0018] If the pressure parameter difference is within the second difference range for a preset time period, then determining that the dirt / clogging value is greater than zero includes:

[0019] Within a preset time period, the pressure parameter difference belongs to the first target frequency of the first sub-interval, and the pressure parameter difference belongs to the second target frequency of the second sub-interval;

[0020] If both the first target frequency and the second target frequency are greater than 0, then the first target frequency and the second target frequency are weighted and fused to obtain the dirt and blockage value;

[0021] If the first target frequency or the second target frequency is greater than 0, then the first target frequency or the second target frequency that is greater than 0 is set as the dirt blockage value.

[0022] In one possible implementation of this application, the feedback of the dirt / clogging value includes:

[0023] The dirt / clogging value is displayed.

[0024] If the dirt / clogging value is greater than zero, then the presence of a user in the environment corresponding to the heat exchanger dirt / clogging detection device is detected.

[0025] If there are users in the environment corresponding to the heat exchanger clogging detection device, the clogging value will be broadcast.

[0026] If there are no users in the environment corresponding to the heat exchanger clogging detection device, a clogging alert is sent to the user terminal communicating with the heat exchanger clogging detection device.

[0027] Thirdly, this application provides an air conditioner, the air conditioner comprising:

[0028] The heat exchanger fouling detection device as described in any one of the claims;

[0029] One or more processors;

[0030] Memory; and

[0031] One or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor to implement the steps in any of the heat exchanger clogging detection methods.

[0032] Fourthly, this application provides a computer-readable storage medium having a computer program stored thereon, the computer program being loaded by a processor to perform the steps in any of the heat exchanger clogging detection methods described in the present application.

[0033] This application provides a dirt / clogging detection device, method, air conditioner, and storage medium. The dirt / clogging detection device includes: a housing; a heat exchanger disposed at the opening of the housing; and a fan disposed within the cavity enclosed by the housing and the heat exchanger, located on one side of the heat exchanger. The housing is equipped with a heat exchange air outlet and a pressure detection component, which detects the actual pressure parameters within the housing. In this solution, the fan is disposed within the cavity enclosed by the housing and the heat exchanger, with the heat exchange air outlet serving as either an air outlet or an air inlet. During operation, airflow passes through the heat exchanger and the heat exchange air outlet, achieving heat exchange. When the heat exchanger becomes clogged, the airflow through it decreases, and the ventilation volume at the heat exchange air outlet exceeds the airflow through the heat exchanger, causing a change in pressure inside the housing. The pressure detection component detects the actual pressure parameters within the housing, determines the degree of dirt / clogging based on these parameters, and provides timely feedback to ensure accurate detection. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 A schematic diagram of one embodiment of the heat exchanger fouling detection device provided in this application;

[0036] Figure 2 A schematic diagram of the structure corresponding to the heat exchange air outlet in a heat exchange blockage detection device provided for the implementation scheme of this application;

[0037] Figure 3 A schematic diagram of another embodiment of a heat exchanger fouling detection device provided for the implementation of this application;

[0038] Figure 4 A schematic diagram of one implementation scheme of the heat exchanger fouling detection method provided in this application;

[0039] Figure 5 A schematic diagram of one implementation scheme for determining the fouling value in the heat exchange fouling detection method provided in this application;

[0040] Figure 6 This is a schematic diagram of an embodiment of the air conditioner provided in this application.

[0041] Among them, 1. Pressure detection component, 10. Fan blade structure, 11. Speed ​​detector, 12. Mounting bracket, 2. Heat exchanger, 3. Mounting partition, 30. First chamber, 31. Second chamber, 4. Shell, 40. Ventilation hole, 41. Heat exchange air outlet, 5. Fan. Detailed Implementation

[0042] 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 the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, 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 indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] In this embodiment, "and / or" describes the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Additionally, the character " / ", unless otherwise specified, generally indicates that the preceding and following associated objects have an "or" relationship.

[0045] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0046] During daily use, the outdoor condenser of an air conditioner can easily become clogged with dust and various impurities over time. Severe clogged outdoor units significantly impair the condenser's heat exchange, leading not only to reduced cooling and heating efficiency and increased energy consumption, but also, in extreme cases, overloading of the entire unit, causing the motor and compressor to overload or burn out.

[0047] However, in actual use, few users pay attention to whether the outdoor condenser is clean. Furthermore, due to the limitations of the installation location, users cannot judge the degree of dirt and blockage in the condenser, making it difficult to clean the outdoor unit condenser in a timely manner. This affects the performance of the air conditioner and causes a waste of electricity.

[0048] While condenser blockage can be determined by detecting parameters such as condenser temperature or pressure, this method has significant limitations. Changes in indoor and outdoor ambient temperature, outdoor fan speed, and compressor operating frequency can cause substantial fluctuations in condenser temperature or pressure, leading to significant errors in the judgment of condenser blockage based on these factors.

[0049] This application provides a method, apparatus, air conditioner, and computer-readable storage medium (the computer-readable storage medium may be referred to as the storage medium) for detecting heat exchanger clogging, which will be described in detail below.

[0050] The heat exchanger clogging detection method in this embodiment of the invention is applied to a heat exchanger clogging detection device, which is installed in an air conditioner. The air conditioner is equipped with one or more processors, a memory, and one or more application programs. The one or more application programs are stored in the memory and configured to be executed by the processor to implement the heat exchanger clogging detection method. The air conditioner can be an indoor unit, an outdoor unit, or an air conditioning system including an indoor unit and an outdoor unit. This application does not make specific limitations.

[0051] See Figure 1 , Figure 1 A schematic diagram of one embodiment of the heat exchanger fouling detection device provided in this application is shown. Specifically, the heat exchanger fouling detection device includes:

[0052] The housing 4 includes a heat exchanger 2 located at the opening of the housing 4, a fan 5 located within the cavity enclosed by the housing 4 and the heat exchanger 2 and situated on one side of the heat exchanger 2, a heat exchange air outlet 41 and a pressure detection component 1 on the housing 4, the pressure detection component 1 being used to detect the actual pressure parameters inside the housing 4.

[0053] Specifically, the heat exchanger blockage detection device can be installed in the outdoor unit or the indoor unit of the air conditioner. For example, the heat exchanger blockage detection device is installed on the outdoor unit of the air conditioner. The heat exchanger 2 is a condenser, and the fan 5 is an outdoor fan 5.

[0054] It is understood that the housing 4 can be made of a material with low thermal conductivity and high temperature resistance. For example, the housing 4 can be a glass housing 4, a plastic housing 4, or a ceramic housing 4, etc.

[0055] It is understood that an installation bayonet can be provided at the opening to limit the heat exchanger 2, and the installation bayonet on the housing 4 can be made of a high-temperature resistant material.

[0056] Specifically, in one embodiment of this application, the heat exchange vent 41 is arranged opposite to the opening, that is, when the fan 5 is running, the airflow enters from the heat exchange vent 41, flows through the heat exchanger 2 and then flows out from the opening. Alternatively, the airflow enters from the opening, flows through the heat exchanger 2 and then flows out from the heat exchange vent 41. The airflow direction can be controlled according to the rotation direction of the fan 5.

[0057] The pressure detection component 1 is used to detect the actual pressure parameters inside the shell 4. It can be understood that when the heat exchanger 2 is clogged, the airflow through the heat exchanger 2 will decrease, and the ventilation volume of the heat exchange vent 41 will be greater than the airflow through the heat exchanger 2, causing the pressure inside the shell 4 to change. By setting the pressure detection component 1 to detect the actual pressure parameters inside the shell 4, the clogged condition of the heat exchanger 2 can be determined.

[0058] In one embodiment of this application, the pressure detection component 1 may be a pressure detection sensor component disposed inside the housing 4, used to detect the pressure value inside the housing 4.

[0059] In another embodiment of this application, see [link to embodiment]. Figure 2 The housing 4 is provided with a ventilation hole 40, and the pressure detection component 1 includes a fan blade structure 10 disposed in the ventilation hole 40 and a speed detector 11 disposed on the fan blade structure 10.

[0060] It is understood that the fan blade structure 10 includes a mounting shaft and a fan blade surrounding the mounting shaft. For example, a rotating hole is provided on the side wall of the ventilation hole 40, and the mounting shaft is located in the rotating hole. When the internal pressure of the housing 4 changes, a pressure difference is generated inside and outside the housing 4, resulting in airflow inside the ventilation hole 40 that drives the fan blade structure 10 to rotate. Furthermore, after the rotational speed of the fan blade structure 10 is detected by the speed detector 11 installed on the fan blade structure 10, the rotational speed is used to characterize the actual pressure parameter inside the housing 4, and then the dirt blockage of the heat exchanger 2 is determined based on the actual pressure parameter.

[0061] Furthermore, in some other embodiments of this application, see [link to other embodiments]. Figure 2 The pressure detection assembly 1 further includes a mounting bracket 12 disposed in the ventilation hole 40, and a rotary bearing disposed on the mounting bracket 12. The fan blade structure 10 includes a mounting shaft and a fan blade disposed on the mounting shaft, and the mounting shaft is installed in the rotary bearing.

[0062] By installing the mounting shaft inside the rotating bearing, the rotational sensitivity of the fan blade structure 10 is ensured, and the rotational resistance of the fan blade structure 10 is reduced.

[0063] Furthermore, based on any of the above implementation schemes, see [link to relevant documentation]. Figure 3 Specifically, the housing 4 is provided with a mounting partition 3, which divides the interior of the housing 4 into a first chamber 30 and a second chamber 31. The opening and the heat exchange air vent 41 are located on opposite sides of the first chamber 30. The fan 5 is located in the first chamber 30, and the ventilation hole 40 is located on the mounting partition 3.

[0064] Understandably, when heat exchanger 2 becomes clogged, the airflow through heat exchanger 2 will decrease, and the ventilation volume of heat exchange vent 41 will be greater than the airflow through heat exchanger 2. This will cause a change in the internal pressure of the first chamber 30, and a pressure difference will be generated between the second chamber 31 and the first chamber 30. The fan blade structure 10 installed in the through hole of the mounting partition 3 will rotate due to the pressure difference. The rotation speed of the fan blade structure 10 will be detected by the speed sensor to determine the clogging condition of heat exchanger 2.

[0065] It is understandable that by setting up a first chamber 30 and a second chamber 31, and detecting the pressure difference between the first chamber 30 and the second chamber 31 for dirt blockage detection, it is possible to avoid the fan 5 from affecting the airflow outside the casing 4 during operation, and to avoid the fan blade structure 10 inside the ventilation hole 40 from being affected and becoming inaccurate.

[0066] Specifically, in use, the actual pressure parameters inside the housing 4 are detected by the pressure detection component 1, and the heat exchanger 2 is determined to be dirty or clogged based on the actual pressure parameters. The detection of the actual pressure parameters can be achieved by using only a pressure detection sensor or a fan structure 10 with ventilation holes 40. The structure is simple and low-cost, while ensuring the accuracy of heat exchanger dirt and blockage detection.

[0067] Based on the above embodiments, this application provides a method for detecting thermal fouling, which is applied to the heat exchanger fouling detection device described in any of the above embodiments. Specifically, see [link to relevant documentation]. Figure 4 , Figure 4 A flowchart illustrating one embodiment of the heat exchanger fouling detection method provided in this application, wherein the heat fouling detection method includes steps S401-S402:

[0068] S401. Obtain the fan speed parameters of the fan in the heat exchanger blockage detection device, and obtain the actual pressure parameters based on the pressure detection component of the heat exchanger blockage detection device.

[0069] The actual pressure parameter is either a pressure value or a rotational speed value, and the fan rotational speed parameter includes the fan rotational speed and / or the fan speed setting.

[0070] Specifically, in one embodiment of this application, the actual pressure parameter is a pressure value, and the heat exchanger clogging detection device is a pressure detection sensor installed inside the housing. The pressure value can be detected and obtained by the pressure detection device installed inside the housing.

[0071] Specifically, in another embodiment of this application, the actual pressure parameter is a rotational speed value. The housing is provided with ventilation holes, and the pressure detection component includes a fan blade structure disposed in the ventilation holes and a rotational speed detector disposed on the fan blade structure. For specific structural details, please refer to any of the above embodiments. The rotational speed value is obtained by setting a rotational speed detector. It can be understood that when the heat exchanger is clogged, the airflow through the heat exchanger will decrease, and the ventilation volume of the heat exchange air outlet will be greater than the airflow through the heat exchanger, resulting in a change in the internal pressure of the housing. This causes the fan blade structure installed in the ventilation holes to rotate due to the pressure. Therefore, the rotational speed value of the fan blade structure can characterize the pressure parameter inside the housing.

[0072] In the heat exchanger blockage detection device, the fan speed parameter can be obtained by a speed sensor installed on the fan, or it can be determined by obtaining the power output of the fan. For example, the fan speed corresponding to the power output can be obtained by looking up a preset relationship table between the power and the speed, or the fan speed parameter can be determined by directly obtaining the power output level of the fan.

[0073] Specifically, in one embodiment of this application, the heat exchanger clogging detection method is applied in a heat exchanger clogging detection device, which is located in an air conditioner. The air conditioner can be an indoor unit, an outdoor unit, or an air conditioning system including both indoor and outdoor units; this application does not specifically limit the method. It is understood that in the scenario of the heat exchanger clogging detection method of this application, the air conditioner can be equipped with a display device, or the air conditioner may not have a display device but may communicate with an external display device. The display device is used to output the results of the heat exchanger clogging detection method executed in the air conditioner. The air conditioner can access a background database (the background database can be in the air conditioner's local storage or it can be located in the cloud). The background database stores information related to heat exchanger clogging detection, such as the initial image or pre-set filtering parameters.

[0074] Furthermore, after detecting that the fan is running, the air conditioner obtains the actual pressure parameter based on the pressure detection component of the heat exchange blockage detection device, and when the actual pressure parameter is detected to be greater than a preset parameter threshold, it obtains the current fan speed parameter. For example, when the speed value is detected to be greater than 0, the fan speed of the fan in the heat exchange blockage detection device is obtained.

[0075] S402. Based on the fan speed parameters and the pressure parameters, determine the clogging value of the heat exchanger in the heat exchange clogging detection device, and provide feedback on the clogging value.

[0076] The dirt / clogging value is used to indicate the degree of dirt / clogging in the heat exchanger. Specifically, the larger the dirt / clogging value, the greater the degree of dirt / clogging in the heat exchanger.

[0077] Specifically, in this embodiment, after obtaining the fan speed parameters and pressure parameters, the air conditioner can obtain the corresponding dirt / clogging values ​​by looking up a preset table, and then determine the dirt / clogging value of the heat exchanger in the heat exchange dirt / clogging detection device. Alternatively, the dirt / clogging value of the heat exchanger in the heat exchange dirt / clogging detection device can be obtained by inputting the fan speed parameters and pressure parameters into a preset dirt / clogging calculation formula. The specific design can be tailored to the actual situation.

[0078] Furthermore, after determining the dirt / clogging value, the dirt / clogging value can be sent to the user terminal bound to the air conditioner, or displayed on the display screen of the air conditioner, or activated by the sound and light alarm set on the air conditioner. Alternatively, the dirt / clogging value can be fed back to the air conditioner processor so that the air conditioner processor can control the start of the heat exchanger cleaning mode according to the dirt / clogging value.

[0079] Furthermore, based on the above implementation plan, see [link to relevant documentation]. Figure 5 , Figure 5 A flowchart illustrating one implementation scheme for determining the fouling value in the heat exchanger fouling detection method provided in this application includes steps S501-S504:

[0080] S501. Search the preset mapping table corresponding to the speed and pressure parameters to obtain the standard pressure parameters corresponding to the fan speed.

[0081] The standard pressure parameter, that is, the pressure parameter generated inside the shell of the fan when the heat exchanger is not clogged and rotating, can be understood to be either a standard pressure value or a standard speed value.

[0082] Specifically, the preset mapping table includes multiple sets of pressure parameters (standards) with mapping relationships and the speed values, that is, one pressure parameter corresponds to one fan speed; or it includes multiple sets of pressure parameters (standards) with mapping relationships and the speed value range, that is, one fan speed range corresponds to one pressure parameter; the preset can be verified by experiments.

[0083] Specifically, after obtaining the fan speed, the air conditioner looks up the preset mapping table corresponding to the pressure parameters and obtains the standard pressure parameters corresponding to the fan speed.

[0084] S502. Calculate the pressure parameter difference between the standard pressure parameter and the actual pressure parameter;

[0085] Specifically, it can be understood that when the fan rotates inside the casing, different speeds may cause pressure errors inside the casing. The standard pressure parameter corresponding to the fan speed is determined by the fan speed. Furthermore, the pressure parameter difference between the standard pressure parameter corresponding to the fan speed and the actual pressure parameter is calculated, thereby determining the pressure deviation caused by heat exchanger blockage. That is, there is a direct proportional relationship between the pressure parameter difference and the blockage value.

[0086] S503. If the pressure parameter difference is within the first difference range within a preset time period, then the dirt / clogging value is determined to be zero.

[0087] Specifically, if the pressure parameter difference is within the first difference range within a preset time period, it indicates that the pressure parameter difference between the standard pressure parameter and the actual pressure parameter is not large, that is, the heat exchanger is not clogged or the degree of clog is small, and it does not affect the operation of the air conditioner. In this case, the clog value is determined to be zero, and the clog value does not need to be fed back.

[0088] S504. If the pressure parameter difference is within the second difference range within a preset time period, then the dirt / clogging value is determined to be greater than zero, wherein the first difference range is smaller than the second difference range.

[0089] Specifically, if the pressure parameter difference is within the second difference range within a preset time period, it indicates that the pressure parameter difference between the standard pressure parameter and the actual pressure parameter is large, which may require replacement or prompt the user to prepare for cleaning the heat exchanger to remove dirt and blockage. In this case, the dirt and blockage value is determined to be greater than zero.

[0090] Specifically, in some embodiments of this application, the second difference interval can be further evacuated. For example, the second difference interval includes a first sub-interval and a second sub-interval, where the first sub-interval is larger than the second sub-interval. The step of determining that the dirt / clogging value is greater than zero if the pressure parameter difference is within the second difference interval for a preset time period includes:

[0091] (1) Within a preset time period, the pressure parameter difference belongs to the first target frequency of the first sub-interval and the pressure parameter difference belongs to the second target frequency of the second sub-interval;

[0092] (2) If both the first target frequency and the second target frequency are greater than 0, then the first target frequency and the second target frequency are weighted and fused to obtain the dirt and blockage value;

[0093] (3) If the first target frequency or the second target frequency is greater than 0, then the first target frequency or the second target frequency that is greater than 0 is set as the dirt blockage value.

[0094] The first target frequency is the number of pressure parameter differences belonging to the first sub-interval, and the second target frequency is the number of pressure parameter differences belonging to the second sub-interval.

[0095] Specifically, after determining the pressure parameter difference, the air conditioner statistically analyzes the difference intervals to which the pressure parameter difference belongs within a preset time period. If none of the pressure parameter differences within the preset time period belong to the first difference interval, then the first target frequency of the pressure parameter difference belonging to the first sub-interval and the second target frequency of the pressure parameter difference belonging to the second sub-interval are determined. That is, multiple actual pressure parameters of the fan blade structure are detected within the preset time period, and for each actual pressure parameter, the pressure parameter difference between the standard pressure parameter and the actual pressure parameter is calculated. Then, the first target frequency of the pressure parameter difference belonging to the first sub-interval and the second target frequency of the pressure parameter difference belonging to the second sub-interval within the preset time period are statistically analyzed. By detecting multiple pressure parameter differences within the preset time period, the difference intervals corresponding to multiple pressure parameter differences are used to determine the dirt blockage value, ensuring the accuracy of the dirt blockage value.

[0096] For example, it is determined whether ΔN is greater than a set threshold a (a = 1.1). If not, it means that the condenser of the outdoor unit of the air conditioner is not clogged, that is, the first difference interval is [0-a]. If ΔN > a and continues for a first preset time, then the number of times ΔN > a is determined to be greater than n times within a second preset time. The first preset time plus the second preset time equals the preset duration (the preset duration in which the pressure parameter difference is within the second difference interval is determined to be the preset duration in which the clogged value is greater than zero). If yes, the severity of the condenser clog is determined according to the value of ΔN, and the user is reminded to clean the outdoor unit.

[0097] Furthermore, the second difference interval includes the first sub-interval [1.1-1.3], the second sub-interval [1.4-1.8], and the third sub-interval [1.8-∞].

[0098] When 1.1 < ΔN ≤ 1.3, the degree of blockage is slight.

[0099] When 1.4 < ΔN ≤ 1.8, the degree of clogging is moderate.

[0100] When ΔN > 1.8, the degree of clogging is considered severe.

[0101] The preferred preset time is 10-30 seconds;

[0102] The second preset time is preferably 10 minutes to 60 minutes;

[0103] The preferred value for n is 2 to 4.

[0104] It is understandable that if both the first target frequency and the second target frequency are greater than 0, then the first target frequency and the second target frequency are weighted and fused to obtain the congestion value. Specifically, corresponding congestion weights can be set for the first sub-interval and the second sub-interval respectively, the target frequencies corresponding to each sub-interval can be multiplied and repaired, and finally the target frequencies corresponding to each sub-interval after multiplication can be added together to obtain the congestion value. If the sub-interval also includes a third sub-interval, then similarly, corresponding congestion weights can be set for the first sub-interval, the second sub-interval, and the third sub-interval respectively, the target frequencies corresponding to each sub-interval can be multiplied and repaired, and finally the target frequencies corresponding to each sub-interval after multiplication can be added together to obtain the congestion value.

[0105] Furthermore, based on the above implementation scheme, this application also provides an implementation scheme for dirt and clogging value feedback, specifically including the following steps:

[0106] (1) Control the display of the dirt / clogging value;

[0107] (2) If the dirt blockage value is greater than zero, then detect whether there is a user in the environment corresponding to the heat exchange dirt blockage detection device;

[0108] (3) If there are users in the environment corresponding to the heat exchange dirt blockage detection device, the dirt blockage value is broadcast.

[0109] It is understood that, in some other embodiments of this application, after calculating the pressure parameter difference between the standard pressure parameter and the actual pressure parameter, the pressure parameter difference can also be compared with a preset difference threshold. If the pressure parameter difference is greater than the preset difference threshold, the dirt blockage value is determined to be 1, indicating that there is dirt blockage; otherwise, the dirt blockage value is determined to be 0, indicating that there is no dirt blockage.

[0110] Specifically, after determining the dirt / clogging value, the air conditioner controls its corresponding display device to display the value, or sends the value to the user terminal for display. Further, if the dirt / clogging value is greater than zero, it indicates that the air conditioner can be replaced or is ready for replacement. This is achieved by detecting whether a user is present in the environment corresponding to the heat exchanger dirt / clogging detection device. If a user is present, the dirt / clogging value is broadcast so that the user can be aware of the current heat exchanger dirt / clogging status. The user can then provide a heat exchanger cleaning command based on the dirt / clogging value, enhancing the flexibility of the air conditioner's heat exchanger cleaning control. The system can control the heat exchanger to perform cleaning, or the air conditioner can directly control the heat exchanger to perform cleaning based on the dirt / clogging value.

[0111] Based on the above implementation scheme, this application also provides an air conditioner, the air conditioner comprising:

[0112] The heat exchanger fouling detection device as described in any of the above embodiments;

[0113] One or more processors;

[0114] Memory; and

[0115] One or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor to implement the steps in the heat exchanger clogging detection method described in any of the above embodiments.

[0116] It is understood that the devices included in the air conditioner do not constitute a limitation on the embodiments of the present invention. That is, the number or type of air conditioners included in the scenario of the heat exchange blockage detection method, or the number or type of devices included in each air conditioner, do not affect the overall implementation of the technical solution in the embodiments of the present invention, and can all be considered as equivalent substitutions or derivatives of the technical solutions claimed in the embodiments of the present invention.

[0117] In this embodiment of the invention, the air conditioner 100 is mainly used for: obtaining the fan speed parameters of the fan in the heat exchanger blockage detection device, and obtaining the actual pressure parameters based on the pressure detection component of the heat exchanger blockage detection device, wherein the actual pressure parameters are pressure values ​​or speed values, and the fan speed parameters include fan speed and / or fan speed setting; determining the blockage value of the heat exchanger in the heat exchanger blockage detection device based on the fan speed parameters and the pressure parameters, and providing feedback on the blockage value.

[0118] In one embodiment of this application, the air conditioner may be equipped with a display device, or the air conditioner may not have a built-in display device but may communicate with an external display device. The display device is used to output the results of the heat exchanger blockage detection method executed in the air conditioner. The air conditioner can access a background database (the background database may be in the air conditioner's local storage or it may be located in the cloud). The background database stores information related to heat exchanger blockage detection, such as the initial image in the background database or pre-set filtering parameters.

[0119] Specifically, see Figure 6 An air conditioner may include components such as a processor 1001 with one or more processing cores, a memory 1002 with one or more computer-readable storage media, a power supply 1003, and an input unit 1004. Those skilled in the art will understand that... Figure 6 The air conditioner structure shown does not constitute a limitation on the air conditioner and may include more or fewer components than shown, or combine certain components, or have different component arrangements. Wherein:

[0120] The processor 1001 is the control center of the air conditioner. It connects various parts of the air conditioner via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 1002, and by calling data stored in the memory 1002, it performs various functions and processes data, thereby providing overall monitoring of the air conditioner. It is understood that the processor 1001 communicates with the controller via signal transmission. Optionally, the processor 1001 may include one or more processing cores; preferably, the processor 1001 may integrate an application processor and a modem processor. The application processor mainly handles the operating system, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may also not be integrated into the processor 1001.

[0121] The memory 1002 can be used to store software programs and modules. The processor 1001 executes various functional applications and data processing by running the software programs and modules stored in the memory 1002. The memory 1002 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, application programs required for at least one function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created based on the use of the air conditioner, etc. In addition, the memory 1002 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 1002 may also include a memory controller to provide the processor 1001 with access to the memory 1002.

[0122] In some embodiments of this application, the air conditioning control device can be implemented as a computer program, and the computer program can be implemented in, for example... Figure 6 The air conditioner shown is running. The air conditioner's memory can store various program modules that make up the air conditioner filter clogging detection method. The computer program composed of these program modules causes the processor to execute the steps in the air conditioner filter clogging detection method of the various embodiments of this application described in this specification.

[0123] The air conditioner includes a processor, memory, and network interface connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The network interface is used to communicate with external air conditioners via a network connection. When the computer program is executed by the processor, it implements a method for detecting air conditioner filter clogging.

[0124] The air conditioner also includes a power supply 1003 that supplies power to various components. Preferably, the power supply 1003 can be logically connected to the processor 1001 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The power supply 1003 may also include one or more DC or AC power supplies, recharging systems, power fault detection circuits, power converters or inverters, power status indicators, and other arbitrary components.

[0125] The air conditioner may also include an input unit 1004, which can be used to receive input digital or character information, and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control.

[0126] Although not shown, the air conditioner may also include a display unit, etc., which will not be described in detail here. Specifically, in this embodiment, the processor 1001 in the air conditioner loads the executable files corresponding to the processes of one or more application programs into the memory 1002 according to the following instructions, and the processor 1001 runs the application programs stored in the memory 1002 to realize various functions, as follows:

[0127] The fan speed parameter of the fan in the heat exchanger blockage detection device is obtained, and the actual pressure parameter is obtained based on the pressure detection component of the heat exchanger blockage detection device. The actual pressure parameter is a pressure value or a speed value, and the fan speed parameter includes the fan speed and / or the fan speed setting.

[0128] Based on the fan speed parameters and the pressure parameters, the fouling value of the heat exchanger in the heat exchange fouling detection device is determined, and the fouling value is fed back.

[0129] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be performed by instructions, or by instructions controlling related hardware. These instructions can be stored in a computer-readable storage medium and loaded and executed by a processor.

[0130] Therefore, embodiments of the present invention provide a computer-readable storage medium (hereinafter referred to as the storage medium), which may include: read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk, etc. A computer program is stored thereon, which is loaded by a processor to execute the steps in any of the air conditioner filter clogging detection methods provided in the embodiments of the present invention. For example, the computer program loaded by the processor can execute the following steps:

[0131] The fan speed parameter of the fan in the heat exchanger blockage detection device is obtained, and the actual pressure parameter is obtained based on the pressure detection component of the heat exchanger blockage detection device. The actual pressure parameter is a pressure value or a speed value, and the fan speed parameter includes the fan speed and / or the fan speed setting.

[0132] Based on the fan speed parameters and the pressure parameters, the fouling value of the heat exchanger in the heat exchange fouling detection device is determined, and the fouling value is fed back.

[0133] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the detailed descriptions of other embodiments above, which will not be repeated here.

[0134] In practice, each of the above units or structures can be implemented as an independent entity or can be arbitrarily combined to be implemented as the same or several entities. For the specific implementation of each of the above units or structures, please refer to the previous method embodiments, which will not be repeated here.

[0135] For details on the implementation of each of the above operations, please refer to the previous examples, which will not be repeated here.

[0136] The above provides a detailed description of a dirt and clogging detection device, method, air conditioner, and storage medium provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A method for detecting dirt and blockage in a heat exchanger, characterized in that, An application to a heat exchanger clogging detection device, the heat exchanger clogging detection device comprising: The enclosure includes a heat exchanger located at the opening of the enclosure, a fan located within the cavity enclosed by the enclosure and the heat exchanger and situated on one side of the heat exchanger, a heat exchange air outlet and a pressure detection assembly on the enclosure, the pressure detection assembly being used to detect the actual pressure parameters inside the enclosure; and a mounting slot is provided at the opening, the mounting slot being used to limit the movement of the heat exchanger. The housing is provided with ventilation holes, and the pressure detection component includes a fan blade structure disposed in the ventilation holes and a speed detector disposed on the fan blade structure; the housing is provided with a mounting partition, which divides the interior of the housing into a first chamber and a second chamber, the opening and the heat exchange air outlet are disposed on opposite sides of the first chamber, the fan is disposed in the first chamber, and the ventilation holes are disposed on the mounting partition; The pressure detection assembly also includes a mounting bracket disposed in the ventilation hole and a rotary bearing disposed on the mounting bracket. The fan blade structure includes a mounting shaft and a fan blade disposed around the mounting shaft. The mounting shaft is installed in the rotary bearing. The method includes: The fan speed parameter of the fan in the heat exchanger clogging detection device is obtained, and the actual pressure parameter is obtained based on the pressure detection component of the heat exchanger clogging detection device. The actual pressure parameter is a pressure value or a speed value, and the fan speed parameter includes the fan speed and / or the fan speed setting. Find the preset mapping table corresponding to the speed and pressure parameters, and obtain the standard pressure parameters corresponding to the fan speed; Calculate the pressure parameter difference between the standard pressure parameter and the actual pressure parameter; If the pressure parameter difference is within the first difference range within a preset time period, the dirt / clogging value is determined to be zero, and the dirt / clogging value is fed back. If the pressure parameter difference is within the second difference range within a preset time period, then within the preset time period, the pressure parameter difference belongs to the first target frequency of the first sub-interval and the pressure parameter difference belongs to the second target frequency of the second sub-interval; wherein, the first difference range is smaller than the second difference range, and the first sub-interval is larger than the second sub-interval; Set corresponding dirty / blocking weights for the first sub-interval and the second sub-interval respectively. If both the first target frequency and the second target frequency are greater than 0, multiply the first target frequency and the second target frequency, and add the target frequencies corresponding to the first sub-interval and the second sub-interval after multiplication to obtain the dirty / blocking value. If either the first target frequency or the second target frequency is greater than 0, set the first target frequency or the second target frequency that is greater than 0 as the dirty / blocking value. The system controls the display of the dirt / clogging value; if the dirt / clogging value is greater than zero, it checks whether there is a user in the environment corresponding to the heat exchanger dirt / clogging detection device; if there is a user in the environment corresponding to the heat exchanger dirt / clogging detection device, it broadcasts the dirt / clogging value; if there is no user in the environment corresponding to the heat exchanger dirt / clogging detection device, it sends a dirt / clogging reminder to the user terminal communicating with the heat exchanger dirt / clogging detection device.

2. An air conditioner, characterized in that, The air conditioner includes: Heat exchanger clogging detection device; One or more processors; Memory; and One or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor to implement the steps in the heat exchanger clogging detection method of claim 1.

3. A computer-readable storage medium, characterized in that, It stores a computer program, which is loaded by a processor to execute the steps in the heat exchanger clogging detection method of claim 1.

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