Detection method and device for indoor unit cross-flow fan, air conditioner, medium

Abstract

The application relates to the technical field of air conditioners, and discloses a detection method for a cross-flow fan of an indoor unit, the indoor unit comprising: a cross-flow fan provided with a rotating shaft; a bearing seat provided with a rubber ring in the radial direction, the inner wall of the rubber ring being uniformly provided with a plurality of temperature sensors, and the rotating shaft being fixed to the bearing seat and arranged against the inner wall of the rubber ring, the method comprising: obtaining temperature values of positions where the plurality of temperature sensors are located under the condition that the cross-flow fan rotates at a constant speed; obtaining a temperature curve of the inner wall of the rubber ring according to the plurality of temperature values; and determining a balance state of the cross-flow fan according to the temperature curve. The application can quickly detect the pollutant accumulation of fan blades and accurately determine the abnormal source of the cross-flow fan. The application further discloses a detection device for the cross-flow fan of the indoor unit, an air conditioner and a medium.

Description

Technical Field

[0001] This application relates to the field of air conditioner technology, such as a detection method and device for an indoor unit cross-flow fan, an air conditioner, and a medium. Background Technology

[0002] Currently, air conditioners are favored by consumers for their diverse environmental control functions. With the rapid development of science and technology, the accuracy and reliability of air conditioner environmental control have gradually improved. However, with long-term use, the blades of the cross-flow fan can be damaged by external air sources, condensate, or dust, causing abnormal fan rotation, or even abnormal noises or vibrations from the air conditioner, affecting the user experience.

[0003] The related technology discloses a fan control method, including: monitoring whether there is an abnormality in the rotation of the fan blades; if there is an abnormality in the rotation of the fan blades, obtaining the decibel value of the noise emitted by the fan and determining whether the decibel value is greater than a first preset decibel threshold; when the decibel value is greater than the first preset decibel threshold, controlling the fan to rotate in the horizontal direction and recording the decibel value of the fan noise at each yaw angle; adjusting the fan's air delivery strategy according to the decibel value of the fan noise at each yaw angle so that the decibel value of the fan noise is less than or equal to the first preset decibel threshold. Thus, the related technology solves the noise problem caused by external air source interference during fan operation and improves the intelligence of the fan.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] When a cross-flow fan is disturbed by an external air source, the fan blades will vibrate noticeably, causing significant noise. Related technologies can detect noise generated by external air sources. However, when a cross-flow fan is not disturbed by an external air source, if the thickness of contaminants adhering to the fan blades is thin, the mechanical load on the blades is small. In this case, the increase in the noise level of the cross-flow fan is not significant. Therefore, related technologies cannot quickly detect the accumulation of contaminants on the fan blades, making it difficult to determine the source of the cross-flow fan's abnormality.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0008] This disclosure provides a method, apparatus, air conditioner, and medium for detecting cross-flow fans in indoor units, to quickly detect the accumulation of contaminants on fan blades and accurately determine the source of abnormalities in the cross-flow fan.

[0009] In some embodiments, the indoor unit includes: a cross-flow fan with a rotating shaft; a bearing housing with a rubber ring radially disposed thereon, a plurality of temperature sensors being uniformly disposed on the inner wall of the rubber ring; the rotating shaft being fixed to the bearing housing and abutting against the inner wall of the rubber ring; the method includes: obtaining temperature values ​​at the locations of the plurality of temperature sensors while the cross-flow fan rotates at a constant speed; obtaining a temperature curve of the inner wall of the rubber ring based on the plurality of temperature values; and determining the balance state of the cross-flow fan based on the temperature curve.

[0010] In some embodiments, obtaining the temperature values ​​at the locations of the multiple temperature sensors includes: obtaining the temperature value at the location of each temperature sensor after the cross-flow fan rotates at a constant speed for N revolutions; obtaining the temperature curve of the inner wall of the rubber ring based on the multiple temperature values ​​includes: constructing the temperature curve of the inner wall of the rubber ring based on the temperature values ​​at the locations of each temperature sensor.

[0011] In some embodiments, determining the balance state of the cross-flow fan based on the temperature curve includes: determining the balance of the cross-flow fan when the temperature curve is a normal curve.

[0012] In some embodiments, determining the balance state of the cross-flow fan based on the temperature curve further includes: obtaining the temperature difference between any two temperature values; selecting the peak value of the temperature difference from all temperature differences; and determining that the cross-flow fan is unbalanced if the peak value of the temperature difference meets the imbalance condition.

[0013] In some embodiments, the temperature difference peak value is determined to meet the imbalance condition in the following manner: the temperature difference peak value is less than the difference threshold.

[0014] In some embodiments, after the peak temperature difference is less than the difference threshold, the method further includes: determining the degree of imbalance of the cross-flow fan based on the positive correlation between the peak temperature and the degree of imbalance.

[0015] In some embodiments, the indoor unit includes: a cross-flow fan with a rotating shaft; a bearing housing with a rubber ring radially disposed thereon, a plurality of temperature sensors being uniformly disposed on the inner wall of the rubber ring; the rotating shaft being fixed to the bearing housing and abutting against the inner wall of the rubber ring; the device includes: an acquisition module for acquiring temperature values ​​at the locations of the plurality of temperature sensors when the cross-flow fan rotates at a constant speed; an execution module for acquiring a temperature curve of the inner wall of the rubber ring based on the plurality of temperature values; and a judgment module for determining the balance state of the cross-flow fan based on the temperature curve.

[0016] In some embodiments, the apparatus includes a processor and a memory storing program instructions, the processor being configured to execute, when running the program instructions, the detection method for an indoor unit cross-flow fan as described above.

[0017] In some embodiments, the air conditioner includes: an indoor unit, including: a cross-flow fan configured with a rotating shaft; a bearing housing with a rubber ring radially disposed thereon, a plurality of temperature sensors uniformly disposed on the inner wall of the rubber ring, the rotating shaft being fixed to the bearing housing and abutting against the inner wall of the rubber ring; and a detection device for the cross-flow fan of the indoor unit as described above is installed on the cross-flow fan.

[0018] The detection method, apparatus, air conditioner, and medium for indoor unit cross-flow fans provided in this disclosure can achieve the following technical effects:

[0019] When a cross-flow fan is not affected by condensation or dust accumulation, its center of gravity is located on the axis of its rotating shaft. Under the influence of gravity, the shaft exerts pressure on the inner wall of the rubber ring along the direction of gravity. When the cross-flow fan rotates at a constant speed, the center of gravity remains fixed along the axis, and correspondingly, the position of the shaft relative to the rubber ring remains unchanged. During the uniform rotation of the cross-flow fan, heat is generated by friction between the shaft and the inner wall of the rubber ring. The heat generated by friction between the shaft and the inner wall of the rubber ring along the direction of gravity is the greatest, while friction and heat generation are relatively small at other locations compared to the location along the direction of gravity. Therefore, in this embodiment, by obtaining the temperature curve of a temperature sensor evenly distributed on the inner wall of the rubber ring when the cross-flow fan rotates at a constant speed, the temperature distribution formed by the heat generated by the friction between the shaft and the rubber ring during the operation of the cross-flow fan can be determined, and this can be used as a basis for judging whether the cross-flow fan is balanced. Thus, this embodiment can quickly detect imbalances in cross-flow fans caused by the accumulation of contaminants on the fan blades, effectively improving the accuracy of detecting abnormal sources in cross-flow fans.

[0020] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0021] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0022] Figure 1 This is an exploded structural diagram of the cross-flow fan and bearing housing provided in the embodiments of this disclosure;

[0023] Figure 2 This is provided by the embodiments of this disclosure. Figure 1 A partial structural diagram of region A in the middle;

[0024] Figure 3 This is a schematic diagram of the structure of the rubber ring provided in an embodiment of this disclosure;

[0025] Figure 4 This is a schematic diagram of the temperature curve under equilibrium state provided in the embodiments of this disclosure;

[0026] Figure 5 This is a schematic diagram of the temperature curve under imbalance state provided in the embodiments of this disclosure;

[0027] Figure 6 This is a schematic diagram of a detection method for an indoor unit cross-flow fan provided in an embodiment of this disclosure;

[0028] Figure 7 This is a schematic diagram of another detection method for an indoor unit cross-flow fan provided in an embodiment of this disclosure;

[0029] Figure 8 This is a schematic diagram of another detection method for an indoor unit cross-flow fan provided in an embodiment of this disclosure;

[0030] Figure 9 This is a schematic diagram of a detection device for an indoor unit cross-flow fan provided in an embodiment of this disclosure;

[0031] Figure 10 This is a schematic diagram of another detection device for an indoor unit cross-flow fan provided in an embodiment of this disclosure;

[0032] Figure 11 This is a schematic diagram of an air conditioner provided in an embodiment of this disclosure. Detailed Implementation

[0033] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0034] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0035] Unless otherwise stated, the term "multiple" means two or more.

[0036] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0037] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0038] The term "correspondence" can refer to an association or binding relationship. The correspondence between A and B means that there is an association or binding relationship between A and B.

[0039] With prolonged use, the blades of the cross-flow fan may be damaged by external air sources, condensate, or dust, causing abnormal rotation of the cross-flow fan, or even abnormal noise or vibration from the air conditioner, affecting the user experience.

[0040] The related technology discloses a fan control method, including: monitoring whether there is an abnormality in the rotation of the fan blades; if there is an abnormality in the rotation of the fan blades, obtaining the decibel value of the noise emitted by the fan and determining whether the decibel value is greater than a first preset decibel threshold; when the decibel value is greater than the first preset decibel threshold, controlling the fan to rotate in the horizontal direction and recording the decibel value of the fan noise at each yaw angle; adjusting the fan's air delivery strategy according to the decibel value of the fan noise at each yaw angle so that the decibel value of the fan noise is less than or equal to the first preset decibel threshold. Thus, the related technology solves the noise problem caused by external air source interference during fan operation and improves the intelligence of the fan.

[0041] When a cross-flow fan is disturbed by an external air source, the fan blades will vibrate noticeably, causing significant noise. Related technologies can detect noise generated by external air sources. However, when a cross-flow fan is not disturbed by an external air source, if the thickness of contaminants adhering to the fan blades is thin, the mechanical load on the blades is small. In this case, the increase in the noise level of the cross-flow fan is not significant. Therefore, related technologies cannot quickly detect the accumulation of contaminants on the fan blades, making it difficult to determine the source of the cross-flow fan's abnormality.

[0042] Combination Figure 1 and Figure 2 As shown, the air conditioner includes an indoor unit. The indoor unit includes: a cross-flow fan 100, which is equipped with a rotating shaft 100a; a bearing housing 200, on which a rubber ring 201 is radially disposed; and multiple temperature sensors (not shown in the figure) evenly disposed on the inner wall of the rubber ring 201. The rotating shaft 100a is fixed to the bearing housing 200 and abuts against the inner wall of the rubber ring 201.

[0043] Figure 4 This represents the temperature curve at equilibrium. (Combined with...) Figure 4 As shown, along the center of the rubber ring and the reference position n m The corresponding position is designated as position n1. Starting from position n1, positions n2, n3, n4, ... are evenly distributed clockwise along the inner wall of the rubber ring until position n1 is reached. It should be noted that the number of temperature sensors can be 2. p p∈N+ and p≥2. Figure 3 The provided rubber ring has eight temperature sensors evenly distributed along its circumference. In specific applications, the number of temperature sensors in this embodiment is not specifically limited.

[0044] Combination Figure 3 and Figure 4 As shown, the horizontal axis n represents the position of the rubber ring where the temperature sensor is located. When the cross-flow fan is stationary, the lowest point of the inner wall of the rubber ring is the reference position n. m When a cross-flow fan rotates at a constant speed, if it is in equilibrium, then the reference position n is... m The heat generated by the friction between the rotating shaft and the inner wall of the rubber ring along the direction of gravity is the greatest, and the temperature is the highest at this point. Except for n... m At locations other than the reference point, friction is relatively low, resulting in less heat generation and lower temperatures. This is reflected in the temperature curve, with the reference position n... m This corresponds to the temperature peak, and the temperature curve follows a normal distribution.

[0045] Combination Figure 3 and Figure 5 As shown, when the cross-flow fan rotates at a constant speed, if it is in an unbalanced state, the position of maximum friction within the rubber ring also rotates circumferentially. Thus, during multiple rotations of the cross-flow fan at a constant speed, each temperature sensor location on the inner wall of the rubber ring experiences the position of maximum friction. After a certain number of rotations at a constant speed, the temperature values ​​at each temperature sensor location become essentially equal. Consequently, the temperature curve constructed from these temperature values ​​becomes essentially horizontal.

[0046] Based on the above air conditioner, combined with Figure 6 As shown in the embodiments of this disclosure, a method for detecting an indoor unit cross-flow fan is provided, including:

[0047] S01, with the cross-flow fan rotating at a constant speed, the processor obtains the temperature values ​​at the locations of multiple temperature sensors.

[0048] S02, the processor obtains the temperature profile of the inner wall of the rubber ring based on multiple temperature values.

[0049] S03, the processor determines the balance state of the crossflow fan based on the temperature curve.

[0050] The detection method for an indoor unit cross-flow fan provided in this disclosure embodiment, when the cross-flow fan is not affected by the accumulation of contaminants such as condensate or dust, has its center of gravity located on the axis of the rotating shaft. Under the action of gravity, the rotating shaft provides pressure to the inner wall of the rubber ring along the direction of gravity. When the cross-flow fan rotates at a constant speed, the position of the center of gravity remains unchanged along the axis, and correspondingly, the position of the rotating shaft relative to the rubber ring remains unchanged. During the uniform rotation of the cross-flow fan, heat is generated by the friction between the rotating shaft and the inner wall of the rubber ring. The heat generated by the friction between the rotating shaft and the inner wall of the rubber ring along the direction of gravity is the greatest, and the friction at other positions is relatively small compared to the position where gravity is located, resulting in less heat generation. Therefore, in this disclosure embodiment, when the cross-flow fan rotates at a constant speed, by obtaining the temperature curve of the temperature sensor evenly distributed on the inner wall of the rubber ring, the temperature distribution formed by the heat generated by the friction between the rotating shaft and the rubber ring during the operation and rotation of the cross-flow fan can be obtained, and this can be used as a basis for judging whether the cross-flow fan is balanced. Thus, the embodiments of this disclosure can quickly detect imbalances in cross-flow fans caused by the accumulation of contaminants on the blades, effectively improving the accuracy of detecting abnormal sources in cross-flow fans.

[0051] Optionally, the processor obtains temperature values ​​at the locations of multiple temperature sensors, including:

[0052] The processor obtains the temperature value at each temperature sensor location after the cross-flow fan has rotated at a constant speed for N revolutions. Here, N is greater than 2 and is a positive integer.

[0053] The processor obtains the temperature profile of the inner wall of the rubber ring based on multiple temperature values, including:

[0054] The processor constructs a temperature profile of the inner wall of the rubber ring based on the temperature values ​​at the location of each temperature sensor.

[0055] In this way, when the cross-flow fan is subjected to the accumulation of contaminants such as condensate or dust, the center of gravity of the cross-flow fan shifts. During uniform rotation, the center of gravity moves centrifugally along the motor shaft, causing the shaft inside the rubber ring to rotate and move along the motor shaft. Correspondingly, the point of maximum friction within the rubber ring also rotates and moves circumferentially. Therefore, after the cross-flow fan has rotated at a constant speed for several revolutions, each temperature sensor location on the inner wall of the rubber ring experiences the point of maximum friction. When a temperature curve is constructed based on the temperature values ​​at each temperature sensor location, the temperature curve is essentially horizontal. Thus, this embodiment of the present disclosure can determine the temperature distribution at different locations on the inner wall of the rubber ring during uniform rotation of the cross-flow fan based on the temperature curve, and use this as a basis for judging the balance / imbalance of the cross-flow fan, effectively improving the accuracy of detecting the source of cross-flow fan anomalies.

[0056] It should be noted that the larger the value of N, the more accurate the equilibrium state reflected by the temperature curve. As an example, N might be 50, 100, or 150. N can also be other values ​​besides those mentioned above.

[0057] Optionally, the processor determines the constant speed rotation of the crossflow fan N revolutions in the following manner:

[0058] The processor obtains the reference time t of the crossflow fan. d , t d This indicates the time it takes for the cross-flow fan to complete one circumferential rotation.

[0059] The processor obtains the current duration t of the crossflow fan rotation. n .

[0060] In t n =N×t d Under these conditions, determine that the cross-flow fan rotates at a constant speed for N revolutions.

[0061] Optionally, combined Figure 4 As shown, the processor determines the equilibrium state of the crossflow fan based on the temperature profile, including:

[0062] When the temperature profile is a normal curve, the processor determines the balance of the cross-flow fan.

[0063] Thus, when the cross-flow fan rotates at a constant speed, if the fan is in equilibrium, the temperature curve will exhibit a normal distribution. Therefore, this embodiment of the present disclosure can determine whether the cross-flow fan is in equilibrium based on whether the temperature curve is a normal curve. This improves the accuracy of cross-flow fan equilibrium detection.

[0064] Optionally, combined Figure 7 As shown, the processor determines the equilibrium state of the crossflow fan based on the temperature profile, including:

[0065] S11, when the temperature curve is a normal curve, the processor determines the balance of the cross-flow fan.

[0066] S12, the processor obtains the temperature difference between any two temperature values.

[0067] S13, the processor selects the peak temperature difference from all temperature differences.

[0068] S14, if the peak temperature difference meets the imbalance condition, the processor determines that the crossflow fan is unbalanced.

[0069] Thus, when the cross-flow fan rotates at a constant speed, if the cross-flow fan is in an unbalanced state, the temperature curve will be basically horizontal. Therefore, in this embodiment, after obtaining the temperature difference between any two temperature values, the peak value of the temperature difference is selected. Then, it is determined whether the peak value of the temperature difference meets the unbalanced condition; if it does, it is determined whether the cross-flow fan is unbalanced. This improves the accuracy of detecting the unbalanced state of the cross-flow fan.

[0070] Optionally, combined Figure 5 As shown, the processor determines whether the peak temperature difference satisfies the imbalance condition in the following manner:

[0071] The peak temperature difference is less than the difference threshold.

[0072] The difference threshold can be set based on the experiment. As an example, the difference threshold is greater than or equal to 0℃ and less than or equal to 2℃. Understandably, the difference threshold can also be other values ​​besides the example above.

[0073] Thus, when the peak temperature difference is less than the threshold temperature difference, it indicates that the difference between any two temperature values ​​is very small, and the temperature curve is approximately a horizontal straight line. Therefore, it can be determined that the cross-flow fan is unbalanced.

[0074] Optionally, combined Figure 8 As shown, the processor determines the equilibrium state of the crossflow fan based on the temperature profile, including:

[0075] S21, when the temperature curve is a normal curve, the processor determines the balance of the cross-flow fan.

[0076] S22, the processor obtains the temperature difference between any two temperature values.

[0077] S23, the processor selects the peak temperature difference from all temperature differences.

[0078] S24, if the peak temperature difference is less than the difference threshold, the processor determines that the crossflow fan is unbalanced.

[0079] S25, the processor selects the peak temperature from all temperature values.

[0080] S26, the processor determines the degree of imbalance of the crossflow fan based on the positive correlation between the temperature peak and the degree of imbalance. The degree of imbalance characterizes the extent to which the center of gravity of the crossflow fan deviates.

[0081] Thus, the peak temperature is positively correlated with the degree of deviation of the cross-flow fan's center of gravity, or the peak temperature is positively correlated with the degree of imbalance of the cross-flow fan. Therefore, this embodiment selects the peak temperature from all temperature values ​​and determines the degree of imbalance of the cross-flow fan based on the aforementioned positive correlation.

[0082] Optionally, the temperature peak is positively correlated with the degree of imbalance, which can be expressed as the temperature peak being directly proportional to the degree of imbalance.

[0083] This disclosure provides a detection device 200 for an indoor unit cross-flow fan. The indoor unit includes: a cross-flow fan with a rotating shaft; a bearing housing with a radially arranged rubber ring; multiple temperature sensors evenly arranged on the inner wall of the rubber ring; and the rotating shaft fixed to the bearing housing and abutting against the inner wall of the rubber ring. Figure 9 As shown, the device 200 includes an acquisition module 201, an execution module 202, and a judgment module 203. The acquisition module 201 is configured to acquire temperature values ​​at the locations of multiple temperature sensors while the cross-flow fan is rotating at a constant speed; the execution module 202 is configured to acquire a temperature curve of the inner wall of the rubber ring based on the multiple temperature values; and the judgment module 203 is configured to determine the balance state of the cross-flow fan based on the temperature curve.

[0084] The detection device for indoor unit cross-flow fans provided in this embodiment can quickly detect imbalances in cross-flow fans caused by the accumulation of contaminants on the fan blades, effectively improving the accuracy of detecting abnormal sources in cross-flow fans.

[0085] Combination Figure 10 As shown, this disclosure provides a detection device 300 for an indoor unit cross-flow fan, including a processor 400 and a memory 401. Optionally, the device may further include a communication interface 402 and a bus 403. The processor 400, communication interface 402, and memory 401 can communicate with each other via the bus 403. The communication interface 402 can be used for information transmission. The processor 400 can call logical instructions in the memory 401 to execute the detection method for an indoor unit cross-flow fan described in the above embodiment.

[0086] Furthermore, the logic instructions in the aforementioned memory 401 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0087] The memory 401, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 400 executes functional applications and data processing by running the program instructions / modules stored in the memory 401, that is, it implements the detection method for the indoor unit cross-flow fan in the above embodiments.

[0088] The memory 401 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 401 may include high-speed random access memory and may also include non-volatile memory.

[0089] Combination Figure 11 As shown, this disclosure provides an air conditioner 600, including an indoor unit and the aforementioned detection device 300 (200) for the indoor unit's cross-flow fan. The indoor unit includes a cross-flow fan and a bearing housing. The cross-flow fan is equipped with a rotating shaft. The bearing housing has a rubber ring radially disposed therefrom, and a plurality of temperature sensors are uniformly disposed on the inner wall of the rubber ring. The rotating shaft is fixed to the bearing housing and abuts against the inner wall of the rubber ring. The detection device 300 for the indoor unit's cross-flow fan is installed on the cross-flow fan. The installation relationship described herein is not limited to placement inside the product, but also includes installation connections with other components of the product, including but not limited to physical connections, electrical connections, or signal transmission connections. Those skilled in the art will understand that the detection device 300 (200) for the indoor unit's cross-flow fan can be adapted to feasible product bodies to achieve other feasible embodiments.

[0090] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the above-described detection method for an indoor unit cross-flow fan.

[0091] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0092] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and other media capable of storing program code; it can also be a transient storage medium.

[0093] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0094] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0095] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed units may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0096] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A method for testing an indoor unit cross-flow fan, characterized in that, Indoor units include: A cross-flow fan is provided with a rotating shaft; a bearing housing has a rubber ring radially disposed thereon, and multiple temperature sensors are evenly arranged on the inner wall of the rubber ring; the rotating shaft is fixed to the bearing housing and abuts against the inner wall of the rubber ring; the method includes: With the cross-flow fan rotating at a constant speed, obtain the temperature value at the location of each temperature sensor after the cross-flow fan has rotated N times at a constant speed. Based on the temperature values ​​at the location of each temperature sensor, a temperature profile of the inner wall of the rubber ring is constructed. Determine the equilibrium state of the cross-flow fan based on the temperature curve; The step of determining the balance state of the cross-flow fan based on the temperature curve includes: Determine the balance of the cross-flow fan when the temperature curve is a normal curve; Get the temperature difference between any two temperature values; Select the peak temperature difference from all temperature differences; When the peak temperature difference meets the imbalance condition, the cross-flow fan imbalance is determined.

2. The method according to claim 1, characterized in that, The peak temperature difference is determined to satisfy the imbalance condition in the following manner: The peak temperature difference is less than the difference threshold.

3. The method according to claim 2, characterized in that, After the peak temperature difference is less than the difference threshold, the process further includes: Select the peak temperature from all temperature values; The degree of imbalance of the cross-flow fan is determined based on the positive correlation between the peak temperature and the degree of imbalance.

4. A testing device for an indoor unit cross-flow fan, characterized in that, Indoor units include: A cross-flow fan, equipped with a rotating shaft; a bearing housing, on which a rubber ring is radially arranged, with multiple temperature sensors evenly arranged on the inner wall of the rubber ring; the rotating shaft is fixed to the bearing housing and abuts against the inner wall of the rubber ring; the device includes: The acquisition module obtains the temperature value at the location of each temperature sensor after the cross-flow fan rotates at a constant speed N times, and constructs the temperature curve of the inner wall of the rubber ring based on the temperature value at the location of each temperature sensor. The execution module obtains the temperature profile of the inner wall of the rubber ring based on multiple temperature values; The judgment module determines the balance state of the cross-flow fan based on the temperature curve; wherein, determining the balance state of the cross-flow fan based on the temperature curve includes: determining the cross-flow fan is balanced when the temperature curve is a normal curve; obtaining the temperature difference between any two temperature values; selecting the peak value of the temperature difference from all temperature differences; and determining the cross-flow fan is unbalanced when the peak value of the temperature difference meets the imbalance condition.

5. A detection device for an indoor unit cross-flow fan, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to execute, when running the program instructions, the detection method for an indoor unit cross-flow fan as described in any one of claims 1 to 3.

6. An air conditioner, characterized in that, include: The indoor unit includes: a cross-flow fan equipped with a rotating shaft; a bearing housing with a rubber ring arranged radially thereon, and multiple temperature sensors evenly arranged on the inner wall of the rubber ring; the rotating shaft is fixed to the bearing housing and abuts against the inner wall of the rubber ring. The detection device for an indoor unit cross-flow fan as described in claim 4 or 5 is installed on the cross-flow fan.

7. A storage medium storing program instructions, characterized in that, When the program instructions are executed, they perform the detection method for the cross-flow fan of the indoor unit as described in any one of claims 1 to 3.

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