Anti-condensation control method for electric motor, Anti-condensation control method, and electronic device and air conditioner

Abstract

The present disclosure relates to the technical field of air conditioning devices, and particularly relates to an anti-condensation control method for an electric motor, an anti-condensation control method, and an electronic device and an air conditioner. The anti-condensation control method for an electric motor comprises: when there are two sets of excitation windings, shielding one of the two sets of excitation windings, such that said set of excitation windings is in a de-energized state; or, when there are more than two sets of excitation windings, shielding at least two sets of excitation windings at asymmetric positions, such that the at least two sets of excitation windings are in a de-energized state; and energizing unshielded excitation windings in an electric motor, such that the electric motor is in a non-operating state and generates heat, thereby implementing an anti-condensation treatment for the electric motor.

Description

Motor anti-condensation control methods, anti-condensation control methods, electronic equipment and air conditioners

[0001] Cross-references to related applications

[0002] This application is based on and claims priority to CN application No. 202411513132.4, filed on October 28, 2024, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] This disclosure relates to the field of air conditioning equipment technology, and in particular to a motor anti-condensation control method, an anti-condensation control method, electronic equipment, and an air conditioner. Background Technology

[0004] When an air conditioner operates in a high-temperature and high-humidity environment, condensation can easily form on components such as the air guide motor along the air outlet path when cold air is blown out from the outlet. If the motor along the air outlet path operates under these conditions for an extended period, it can easily lead to motor failure.

[0005] To prevent condensation from forming on the motor in the air outlet path of an air conditioner, the following two measures are generally adopted:

[0006] Measure 1: Add windproof structures to locations such as the motor to reduce the amount of hot and humid ambient air entering the chamber where the motor is located;

[0007] Measure 2: Add sponge to the air conditioner for insulation and waterproofing. The sponge reduces the amount of cold air blowing on the motor, thus keeping the surface temperature of the motor higher than the dew point temperature of the condensation and preventing condensation from forming on the motor. Summary of the Invention

[0008] This disclosure provides a motor anti-condensation control method, an electronic device, and an air conditioner to solve the problem that condensation easily forms on the motor in the air outlet path of existing air conditioners, resulting in a short service life of the motor.

[0009] A first aspect of this disclosure provides a method for preventing condensation in a motor, wherein the motor has at least two sets of excitation windings, and the method includes:

[0010] When there are two sets of excitation windings, one set of excitation windings is shielded so that one set of excitation windings is in an unenergized state.

[0011] or,

[0012] When there are two or more excitation windings, at least two of the excitation windings that are in asymmetrical positions are shielded so that at least two of the excitation windings are in an unenergized state.

[0013] Energize the unshielded excitation winding in the motor to put the motor in a non-operating state and generate heat, thus completing the anti-condensation treatment of the motor.

[0014] A second aspect of this disclosure provides an anti-condensation control method applied to the indoor unit of an air conditioner. The indoor unit has a motor along its air outlet path, and the motor has at least two sets of excitation windings. The anti-condensation control method includes:

[0015] Determine if the indoor unit is running the anti-condensation program;

[0016] During the operation of the anti-condensation program in the indoor unit, the excitation winding is shielded based on the shielding strategy, which is used to characterize the energization state of the excitation winding.

[0017] Control the motor operation to prevent condensation.

[0018] In some implementations, the shielding strategy includes a first shielding strategy and a second shielding strategy;

[0019] The excitation winding is shielded based on a shielding strategy, including:

[0020] Obtain the dew point temperature of the motor under the current environmental conditions;

[0021] The number of excitation windings that need to be shielded is determined based on the dew point temperature.

[0022] When the dew point temperature is lower than the set value, the number of excitation windings is shielded based on the first shielding strategy;

[0023] When the dew point temperature is higher than the set value, the number of excitation windings is shielded based on the second shielding strategy, wherein the number of excitation windings shielded in the second shielding strategy is greater than the number of excitation windings shielded in the first shielding strategy.

[0024] In some implementations, there are at most two sets of excitation windings;

[0025] When the dew point temperature is lower than the set value, the number of excitation windings is masked based on the first masking strategy, including:

[0026] One set of excitation windings is shielded so that it is in an unenergized state.

[0027] In some implementations, there are at least three sets of excitation windings;

[0028] When the dew point temperature is higher than the set value, the number of excitation windings is masked based on the second shielding strategy, including:

[0029] At least two sets of excitation windings in asymmetrical positions are shielded so that the resulting at least two sets of excitation windings are in an unenergized state.

[0030] In some implementations, controlling the motor operation to prevent condensation includes:

[0031] By energizing the unshielded excitation winding in the motor, the motor is in a non-operating state and generates heat, making the surface temperature of the motor higher than the dew point temperature for condensation, thus completing the anti-condensation treatment of the motor.

[0032] In some implementations, determining whether the indoor unit is running an anti-condensation program includes:

[0033] In response to the start command signal of the air conditioner's cooling or dehumidification program, the first running time of the compressor in the air conditioner is obtained;

[0034] When the first running time is greater than or equal to the first set time, the relative humidity data of the indoor air is obtained based on the humidity detection device installed in the indoor unit;

[0035] When the relative humidity data is greater than or equal to the set humidity threshold and the motor is not started, the indoor unit will be set to run the anti-condensation program.

[0036] In some implementations, relative humidity data of indoor air is obtained based on a humidity sensor installed in the indoor unit, including:

[0037] When the humidity detection device is faulty, the indoor unit will be set to run the anti-condensation program when the first running time is greater than or equal to the first set time.

[0038] In some implementations, determining whether the indoor unit is running an anti-condensation program includes:

[0039] In response to the start command signal of the air conditioner's cooling or dehumidification program, the first running time of the compressor in the air conditioner is obtained;

[0040] If the first running time is greater than or equal to the first set time, and the motor is not running, the indoor unit is confirmed to run the anti-condensation program.

[0041] In some embodiments, after the step of controlling the motor operation to prevent condensation, the anti-condensation control method further includes:

[0042] Determine whether the air conditioner meets the conditions for exiting the anti-condensation program;

[0043] If the air conditioner meets the conditions for exiting the anti-condensation program, the indoor unit will stop running the anti-condensation program.

[0044] After the preset time for exiting the anti-condensation program has elapsed, determine again whether the anti-condensation program needs to be run again.

[0045] In some implementations, determining whether the air conditioner meets the conditions for exiting the anti-condensation program includes:

[0046] Obtain the second running time of the compressor in the anti-condensation program in the air conditioner;

[0047] When the second running time is greater than or equal to the second set time, it is determined that the air conditioner meets the condition.

[0048] In some embodiments, after the step of controlling the motor operation to prevent condensation, the anti-condensation control method further includes:

[0049] Determine whether the user has started other programs. Other programs must include at least one of the following: air swing program, cooling program, heating program, dehumidification program, or formaldehyde removal program.

[0050] If the user starts other programs, the air conditioner is determined to meet the conditions.

[0051] In some embodiments, after the step of controlling the motor operation to prevent condensation, the anti-condensation control method further includes:

[0052] The indoor humidity value is obtained based on the humidity detection device installed in the indoor unit;

[0053] When the humidity value is lower than the preset value, the air conditioner is deemed to meet the conditions.

[0054] A third aspect of this disclosure provides an electronic device, the electronic device comprising:

[0055] Memory is used to store one or more computer-executable instructions;

[0056] A processor for calling and executing computer-executable instructions in memory to implement the methods of either the first aspect or the second aspect.

[0057] A fourth aspect of this disclosure provides an air conditioner that is controlled by a method as described in the first or second aspect, or has electronic equipment as described in the third aspect.

[0058] A fifth aspect of this disclosure provides a computer-readable storage medium having computer program instructions stored thereon, which, when executed by a processor, implement any of the methods described above.

[0059] A sixth aspect of this disclosure provides a computer program for causing a processor to execute any of the methods described above.

[0060] The main beneficial effects of this disclosure are:

[0061] In the disclosed motor anti-condensation control method, electronic device, and air conditioner, the motor has at least two sets of excitation windings. The motor anti-condensation control method includes: when there are two sets of excitation windings in the motor, shielding one set of excitation windings to make that set of excitation windings unenergized; or, when there are more than two sets of excitation windings in the motor, shielding at least two sets of excitation windings located asymmetrically to make the at least two sets of excitation windings energized; then, energizing the unshielded excitation windings in the motor to make the motor non-operating and generate heat, thus completing the anti-condensation treatment of the motor. When the unshielded excitation windings in the motor are energized, the motor generates heat without rotating, thereby making the surface temperature of the motor higher than the dew point temperature, preventing condensation from forming on the motor, and effectively improving the efficiency of the motor. Attached Figure Description

[0062] To more clearly illustrate the technical solutions in the embodiments or related technologies of this disclosure, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0063] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which this disclosure can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effectiveness and purpose that this disclosure can achieve, should still fall within the scope of the technical content disclosed herein.

[0064] Figure 1 is a flowchart of the steps of a motor anti-condensation control method according to an embodiment of the present disclosure.

[0065] Figure 2 is a flowchart of a step-by-step method for preventing condensation according to an embodiment of the present disclosure.

[0066] Figure 3 is a flowchart of another step of an anti-condensation control method according to an embodiment of the present disclosure.

[0067] Figure 4 is a logic judgment flowchart of an anti-condensation control method according to an embodiment of the present disclosure.

[0068] Figure 5 is a schematic diagram of an electronic device according to an embodiment of the present disclosure.

[0069] Figure 6 is a schematic diagram of an air conditioner according to an embodiment of the present disclosure. Detailed Implementation

[0070] The following specific embodiments illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0071] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the disclosure. The singular forms “a,” “the,” and “the” used in the embodiments of this disclosure and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. “Multiple” generally includes at least two, but does not exclude the inclusion of at least one.

[0072] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0073] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0074] The embodiments of this disclosure are described in detail below. Examples of these embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting this disclosure.

[0075] The inventors discovered that the measures in the related technologies increase the design cost of air conditioners and also lead to larger air conditioner dimensions. Furthermore, the two measures mentioned above require multiple structural verifications and improvements during development, resulting in low development efficiency.

[0076] An exemplary embodiment of this disclosure provides a motor. This motor can be used in an air conditioner. Specifically, the motor can be positioned in the air outlet path of the air conditioner. For example, the motor can be a guide motor that drives the rotation of an air guide vane. Alternatively, the motor can be a sweeping motor that drives left and right sweeping vanes at the air outlet position in the air conditioner. Or, the motor can also be a working motor used in equipment such as ships or coal mines.

[0077] It should be noted that the motor can be a phase motor, which includes, but is not limited to, stepper motors. A stepper motor, also known as a pulse motor, advances a certain angle with each change in excitation state based on a specific input pulse signal. Taking a four-phase motor as an example, the motor mainly consists of four pairs of excitation windings and a permanent magnet rotor. When a pulse current passes through, each pair of adjacent excitation windings is sequentially energized, making them magnetic and driving the rotor to rotate, while simultaneously generating heat.

[0078] When the aforementioned motor is used in a high-temperature and high-humidity environment, condensation will form on certain parts of the motor due to temperature differences. Prolonged operation in such an environment can easily lead to motor malfunction. Therefore, an exemplary embodiment of this disclosure provides a motor anti-condensation control method. As shown in Figure 1, the motor has at least two sets of excitation windings; that is, the motor has two, three, four, or more sets of excitation windings. The motor anti-condensation control method of this embodiment includes the following steps:

[0079] Step S10: When there are two sets of excitation windings, one set of excitation windings is shielded so that one set of excitation windings is in an unenergized state.

[0080] Step S20: When there are two or more excitation windings, shield at least two of the excitation windings that are in asymmetrical positions so that at least two of the excitation windings are in an unenergized state.

[0081] Step S30: Energize the unshielded excitation winding in the motor to put the motor in a non-operating state and generate heat, thus completing the anti-condensation treatment of the motor.

[0082] In step S10, when there are two sets of excitation windings in the motor, i.e., a two-phase motor, one of the two sets of excitation windings is shielded so that the shielded excitation winding is in an unenergized state.

[0083] It should be noted that in some embodiments, the motor control system energizes the corresponding excitation windings in the motor based on the control program, while de-energizing the excitation windings that need to be shielded.

[0084] In step S20, when there are three, four or more sets of excitation windings in the motor, at least two sets of excitation windings in asymmetrical positions are shielded so that the at least two sets of excitation windings are in an unenergized state.

[0085] In step S30, the unshielded excitation windings in the motor are energized. At this time, because some sets of excitation windings are not energized, the motor cannot complete a complete winding cycle and therefore cannot run. However, some sets of excitation windings are energized, and these sets of excitation windings generate heat due to the energization. This results in the motor generating heat even when it is not rotating, thereby increasing the surface temperature of the motor. This makes the surface temperature of the motor higher than the dew point temperature, thus achieving anti-condensation treatment for the motor and effectively improving the service life of the motor.

[0086] When there are three groups of excitation windings, namely X, Y, and Z, any two groups of excitation windings can be shielded. For example, groups X and Y can be energized, with only group Z energized. Alternatively, groups Y and Z can be shielded, with only group X energized. Or, groups X and Z can be shielded, with only group Y energized.

[0087] When there are four groups of excitation windings, namely groups A, B, C, and D arranged sequentially, groups A and C are symmetrically arranged, and groups B and D are symmetrically arranged. At least two of the four groups of excitation windings that are in asymmetrical positions are shielded, so that these at least two groups of excitation windings are in a de-energized state, while the remaining unshielded excitation windings are in a energized state.

[0088] Taking the shielding of two sets of excitation windings in asymmetrical positions as an example, for instance, shielding groups B and C while energizing groups A and D; or shielding groups A and B while energizing groups C and D; or shielding groups A and D while energizing groups B and C; or shielding groups C and D while energizing groups A and B. All these shielding combinations allow the motor to generate heat even when it is not rotating, thereby increasing the surface temperature of the motor and making it higher than the dew point temperature, thus achieving anti-condensation treatment and effectively extending the motor's service life.

[0089] Taking the shielding of three sets of excitation windings in asymmetrical positions as an example, for instance, groups A, B, and C can be shielded, with only group D energized. Alternatively, groups B, C, and D can be shielded, with only group A energized. Or, groups A, D, and C can be shielded, with only group B energized. Or, groups A, B, and D can be shielded, with only group C energized. All these shielding combinations allow the motor to generate heat even when it is not rotating, thereby increasing the surface temperature of the motor and making it higher than the dew point temperature, thus achieving anti-condensation treatment and effectively extending the motor's service life.

[0090] It should be noted that in the above examples, the situation where the motor is energized but not running is divided into single-phase energization and two-phase energization. Single-phase energization is used to represent one set of excitation windings in the motor, while two-phase energization is used to represent the energization of two sets of excitation windings in asymmetrical positions. The surface temperature of the motor when using single-phase energization is slightly lower than that when using two-phase energization.

[0091] In one example, assuming the motor operates under extreme high temperature and humidity conditions, with an ambient temperature of 35°C and humidity of 90%, the calculated dew point temperature for condensation to form on the motor is 33.33°C. When the motor is energized with one phase, the motor surface temperature can reach 38°C. When the motor is energized with two phases, the surface temperature can reach 50°C. This means that regardless of whether the motor is energized with one or two phases, the motor surface temperature is higher than the dew point temperature for condensation, thus inhibiting condensation formation on the motor and achieving anti-condensation treatment, effectively ensuring and extending the motor's service life.

[0092] As shown in Figure 2, an exemplary embodiment of this disclosure provides an anti-condensation control method applied to the indoor unit of an air conditioner. A motor is located in the air outlet path of the indoor unit, and the motor has at least two sets of excitation windings. In some embodiments, the motor is a guide motor that drives the rotation of an air guide vane. In some embodiments, the motor is a sweeping motor that drives left and right sweeping vanes at the air outlet position in the air conditioner, etc.

[0093] In some embodiments, the motor is a phase motor, which includes, but is not limited to, stepper motors. Stepper motors, also known as pulse motors, advance a certain angle with each change in excitation state based on a specific input pulse signal. Taking a four-phase motor as an example, the motor mainly consists of four pairs of excitation windings and a permanent magnet rotor. When a pulse current passes through, each pair of adjacent excitation windings is sequentially energized, making them magnetic and driving the rotor to rotate, while simultaneously generating heat.

[0094] As shown in Figure 2 and Figure 4, the anti-condensation control method includes the following steps S100-S300.

[0095] In step S100, it is determined whether the indoor unit is running the anti-condensation program.

[0096] In step S200, during the operation of the anti-condensation program of the indoor unit, the excitation winding is shielded based on the shielding strategy, which is used to characterize the energized state of the excitation winding.

[0097] In step S300, the motor is controlled to operate in order to prevent condensation.

[0098] In some embodiments, in step S100, it is confirmed whether the indoor unit is running the anti-condensation program through the following three cases.

[0099] Scenario 1:

[0100] In response to the start command signal of the air conditioner's cooling or dehumidification program, the first operating time T1 of the compressor in the air conditioner is obtained based on the air conditioner's control system. In some embodiments, the control system of the indoor unit determines the first operating time T1 of the compressor based on the operating status of the compressor in the outdoor unit of the air conditioner. It should be noted that in some embodiments, the first operating time T1 is the operating time of the compressor from start-up to the stable phase, or in some embodiments, the first operating time T1 is the operating time of the compressor during the stable phase.

[0101] In some embodiments, the control system of the air conditioner or the control system of the indoor unit can adopt the control system in the related technology. As long as the control system can control the various start-up functions of the air conditioner or the indoor unit, the specific structure type and specific control logic of the control system will not be described in detail here.

[0102] When the compressor's first running time T1 is greater than or equal to the first set time T_set1, that is, when T1 is greater than or equal to T_set1, the indoor relative humidity data is obtained through the humidity detection device installed in the indoor unit.

[0103] In some embodiments, the humidity detection device includes, but is not limited to, a humidity sensor, a temperature and humidity sensor, etc. The first set time T is set to any value between 3 minutes and 10 minutes.

[0104] When the relative humidity data is greater than or equal to the set humidity threshold and the motor is not running, the indoor unit will activate the anti-condensation program. The set humidity threshold is a range value, between 75% and 90%.

[0105] Scenario 2:

[0106] In response to the start command signal of the air conditioner's cooling or dehumidification program, the first operating time T1 of the compressor in the air conditioner is obtained based on the air conditioner's control system. In some embodiments, the control system based on the indoor unit determines the first operating time T1 of the compressor according to the operating status of the compressor in the outdoor unit of the air conditioner.

[0107] When the control system detects and determines that the humidity sensor in the indoor unit is in a faulty state, such as inaccurate detection data or failure of the control system to obtain detection data from the humidity sensor for a long time, the first running time T1 is compared with the first set time T1.

[0108] When the first running time T1 is greater than or equal to the first set time T_set1, that is, when T0 is greater than or equal to T_set1, the indoor unit is directly controlled to implement anti-condensation measures.

[0109] Scenario 3:

[0110] When no humidity sensor is installed in the indoor unit, the first operating time T1 of the compressor in the air conditioner is obtained based on the start command signal of the air conditioner's cooling or dehumidification program, according to the air conditioner's control system. In some embodiments, the first operating time T1 of the compressor is determined by the control system of the indoor unit based on the operating status of the compressor in the outdoor unit of the air conditioner.

[0111] When the first running time T1 is greater than or equal to the first set time T_set1, that is, when T0 is greater than or equal to T_set1, the indoor unit is directly controlled to implement anti-condensation measures.

[0112] In steps S200 and S300, during the operation of the anti-condensation program in the indoor unit, the excitation winding in the motor is shielded using the following method. After the excitation winding is shielded, the unshielded excitation winding in the motor is energized, and the motor is in a non-operating state and heats up, thereby making the surface temperature of the motor higher than the dew point temperature of condensation, so as to complete the anti-condensation treatment of the motor.

[0113] It should be noted that in some embodiments, the unshielded excitation winding in the motor is energized by the following method: using the control system to control the indoor unit to run the air-sweeping program, etc.

[0114] The specific shielding and anti-condensation processes include the following methods:

[0115] Based on the environment in which the motor is located, the dew point temperature of the motor under the current environmental conditions is calculated by the control system.

[0116] Then, the control system determines the number of shields to be applied to the excitation windings in the motor based on the dew point temperature. The dew point temperature of the condensate can be calculated using relevant techniques, which will not be elaborated upon here.

[0117] When the dew point temperature is lower than the set value, the number of excitation windings is shielded based on the first shielding strategy.

[0118] It should be noted that the settings in this example are either flexibly set by the user or are values ​​set at the factory when the air conditioner leaves the factory. The specific data of the settings are not limited here.

[0119] In a specific example, the motor has only two sets of excitation windings.

[0120] When the dew point temperature is lower than the set value, it indicates that the humidity parameter value of the environment in which the indoor unit is located may be relatively low. At this time, in order to increase the surface temperature of the motor with low power consumption, in some embodiments, any one of the excitation windings is shielded, so that the excitation windings are not energized, and only the other unshielded excitation windings are energized.

[0121] Based on this, one set of excitation windings in the motor is not energized, preventing the motor from completing a full winding cycle and thus making it unable to operate. However, at this time, the other set of excitation windings in the motor is energized. The energized excitation windings generate heat, which in turn causes the motor to generate heat even when it is not rotating. This increases the surface temperature of the motor, making it higher than the dew point temperature for condensation, thus achieving anti-condensation treatment for the motor and effectively extending the service life of the motor.

[0122] When the dew point temperature is higher than the set value, the number of excitation windings is shielded based on the second shielding strategy. Specifically, the number of excitation windings shielded in the second shielding strategy is greater than the number of excitation windings shielded in the first shielding strategy.

[0123] In another specific example, the motor has at least three sets of excitation windings, such as three, four or more sets of excitation windings.

[0124] When the dew point temperature is higher than the set value, at least two sets of excitation windings in asymmetrical positions are shielded so that at least two sets of excitation windings are in an unenergized state.

[0125] When there are three groups of excitation windings, namely X, Y, and Z, any two groups of excitation windings can be shielded. For example, groups X and Y can be energized, and only group Z can be energized. Alternatively, groups Y and Z can be shielded, and only group X can be energized. Or, groups X and Z can be shielded, and only group Y can be energized.

[0126] When there are four groups of excitation windings, namely groups A, B, C, and D arranged sequentially, groups A and C are symmetrically arranged, and groups B and D are symmetrically arranged. At least two of the four groups of excitation windings that are in asymmetrical positions are shielded, so that these at least two groups of excitation windings are in a de-energized state, while the remaining unshielded excitation windings are in a energized state.

[0127] Taking the shielding of two sets of excitation windings in asymmetrical positions as an example, for instance, shielding groups B and C while energizing groups A and D; or shielding groups A and B while energizing groups C and D; or shielding groups A and D while energizing groups B and C; or shielding groups C and D while energizing groups A and B. All these shielding combinations allow the motor to generate heat even when it is not rotating, thereby increasing the surface temperature of the motor and making it higher than the dew point temperature, thus achieving anti-condensation treatment and effectively extending the motor's service life.

[0128] Taking the shielding of three sets of excitation windings in asymmetrical positions as an example, for instance, groups A, B, and C can be shielded, with only group D energized. Alternatively, groups B, C, and D can be shielded, with only group A energized. Or, groups A, D, and C can be shielded, with only group B energized. Or, groups A, B, and D can be shielded, with only group C energized. All these shielding combinations allow the motor to generate heat even when it is not rotating, thereby increasing the surface temperature of the motor and making it higher than the dew point temperature, thus achieving anti-condensation treatment and effectively extending the motor's service life.

[0129] It should be noted that in the above examples, the situation where the motor is energized but not running is divided into single-phase energization and two-phase energization. Single-phase energization is used to represent one set of excitation windings in the motor, while two-phase energization is used to represent the energization of two sets of excitation windings in asymmetrical positions. The surface temperature of the motor when using single-phase energization is slightly lower than that when using two-phase energization.

[0130] In one example, assuming the motor operates under extreme high temperature and humidity conditions, with an ambient temperature of 35°C and humidity of 90%, the calculated dew point temperature for condensation to form on the motor is 33.33°C. When the motor is energized with one phase, the motor surface temperature can reach 38°C. When the motor is energized with two phases, the surface temperature can reach 50°C. This means that regardless of whether the motor is energized with one or two phases, the motor surface temperature is higher than the dew point temperature for condensation, thus inhibiting condensation formation on the motor and achieving anti-condensation treatment, effectively ensuring and extending the motor's service life.

[0131] In this example, when the unshielded excitation winding in the motor is energized, the motor will heat up without rotating, thus making the surface temperature of the motor higher than the dew point temperature of condensation, preventing condensation from forming on the motor and effectively improving the efficiency of the motor.

[0132] On the other hand, by implementing the aforementioned anti-condensation control method, it is possible to avoid adding a windproof structure to the motor inside the air conditioner, or adding structures such as sponges to prevent condensation on the motor. If windproof structures or sponge-like insulation materials are used, the development of such structures requires multiple structural verifications and improvements. In this example, control is achieved solely through the motor's control logic, eliminating the need for additional windproof structures or sponge-like insulation materials. This effectively saves on the development process of air conditioner improvements, thus significantly reducing design and production costs, facilitating miniaturization, improving motor efficiency, and enhancing the user experience.

[0133] It should be noted that the anti-condensation control method in this example is also applicable to indoor units of different air conditioners, demonstrating high versatility and effectively improving the development efficiency of air conditioners.

[0134] As shown in Figure 3 and Figure 4, in some embodiments, after performing anti-condensation treatment on the motor, the anti-condensation control method further includes the following steps S400-S600.

[0135] In step S400, it is determined whether the air conditioner meets the conditions for exiting the anti-condensation program.

[0136] In step S500, if the air conditioner meets the conditions for exiting the anti-condensation program, the indoor unit stops running the anti-condensation program.

[0137] In step S600, after the preset time for exiting the anti-condensation program has elapsed, it is determined again whether the anti-condensation program still needs to be run.

[0138] In steps S400 and S500, the air conditioner's control system determines whether the air conditioner meets the conditions for exiting the anti-condensation program. Specifically, the air conditioner is determined to meet the conditions for exiting the anti-condensation program when it meets the following conditions.

[0139] Condition one:

[0140] The control system obtains the second operating time T2 of the compressor in the air conditioner during the anti-condensation program. When the second operating time T2 is greater than or equal to the second set time Tset2, it indicates that the air conditioner has met the conditions for exiting the anti-condensation program. In some embodiments, the air conditioner is controlled to exit the anti-condensation program at this time. The value of the second set time ranges from 120 minutes to 600 minutes.

[0141] Condition two:

[0142] The control system determines whether the user has activated other programs, which include at least one of the following: air swing program, cooling program, heating program, dehumidification program, or formaldehyde removal program. In other words, when the user manually controls the air conditioner to run any of the above programs via remote control or smart control terminal, the indoor unit or air conditioner needs to execute other programs to achieve the corresponding function. In some embodiments, this is determined by determining that the air conditioner meets the conditions for exiting the anti-condensation program.

[0143] The air conditioner is deactivated from the anti-condensation program by the control system.

[0144] Condition three:

[0145] The humidity value of the room is obtained based on the humidity detection device installed in the indoor unit. That is, in some embodiments, the humidity value of the room where the motor is located is obtained through the humidity sensor or temperature and humidity sensor installed in the indoor unit.

[0146] The humidity value is compared with a predetermined value. In some embodiments, the predetermined value is set within the range of any value between 60% and 75%. When the humidity value is less than the predetermined value, it indicates that the indoor humidity is low and condensation will not form on the motor when it is not running. In some embodiments, the air conditioner is determined to meet the conditions for exiting the anti-condensation program, and the control system controls the air conditioner to exit the anti-condensation program.

[0147] In step S600, after the air conditioner exits the anti-condensation program for a preset time, the air conditioner's control system determines again, based on step S100 above, whether the air conditioner still needs to run the anti-condensation program.

[0148] An exemplary embodiment of this disclosure also provides an electronic device, which includes a processor 502 and a memory 501 connected to the processor 502. The memory 501 is used to store one or more computer-executable instructions. These computer-executable instructions can be invoked by the processor to execute the motor anti-condensation control method or anti-condensation control method described in the above embodiments.

[0149] An exemplary embodiment of this disclosure also provides a computer-readable storage medium storing computer program instructions that, when executed by a processor, implement the steps of the above-described motor anti-condensation control method or the method in the corresponding embodiment of the anti-condensation control method. Those skilled in the art will understand that embodiments of this disclosure can be provided as methods, apparatus, or computer program products. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure can take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0150] An exemplary embodiment of this disclosure also provides an air conditioner 60. This air conditioner is controlled using the motor anti-condensation control method or anti-condensation control method described in any of the above embodiments; or, it has the electronic device 61 described in the above embodiments.

[0151] In the example above, by shielding part of the excitation winding in the motor, the unshielded excitation winding will generate heat when the motor is not rotating after being energized. This makes the surface temperature of the motor higher than the dew point temperature of condensation, thus preventing condensation from forming on the motor and effectively improving the efficiency of the motor.

[0152] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0153] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

A method for preventing condensation in motors, comprising: When the motor has two sets of excitation windings, one set of the excitation windings is shielded so that the set of excitation windings is in a de-energized state. Alternatively, if there are more than two sets of excitation windings, at least two sets of excitation windings that are in asymmetrical positions are shielded so that at least two sets of excitation windings are in an unenergized state. The unshielded excitation winding in the motor is energized to put the motor in a non-operating state and generate heat, thus completing the anti-condensation treatment of the motor. The motor anti-condensation control method according to claim 1 further includes: Determine if the indoor unit is running the anti-condensation program; During the operation of the anti-condensation program in the indoor unit, the excitation winding is shielded based on a shielding strategy, which is used to characterize the energization state of the excitation winding. Control the operation of the motor to perform anti-condensation treatment on the motor. According to claim 2, the method for preventing condensation in motors, wherein, The blocking strategy includes a first blocking strategy and a second blocking strategy; The shielding treatment of the excitation winding based on the shielding strategy includes: Obtain the dew point temperature of the motor under the current environmental conditions; The number of excitation windings that need to be shielded is determined based on the dew point temperature; When the dew point temperature is lower than the set value, the number of the excitation windings is shielded based on the first shielding strategy. When the dew point temperature is higher than the set value, the number of excitation windings is shielded based on the second shielding strategy, wherein the number of excitation windings shielded in the second shielding strategy is greater than the number of excitation windings shielded in the first shielding strategy. According to claim 2 or 3, the method for preventing condensation in motors, wherein, The control of the motor operation to perform anti-condensation treatment on the motor includes: The unshielded excitation winding in the motor is energized, and the motor is in a non-operating state and generates heat, so that the surface temperature of the motor is higher than the dew point temperature for condensation, thereby completing the anti-condensation treatment of the motor. An anti-condensation control method is applied to the indoor unit of an air conditioner, wherein the indoor unit has a motor in its air outlet path, and the motor has at least two sets of excitation windings, wherein... The anti-condensation control method includes: Determine whether the indoor unit is running the anti-condensation program; During the operation of the anti-condensation program in the indoor unit, the excitation winding is shielded based on a shielding strategy, which is used to characterize the energization state of the excitation winding. Control the operation of the motor to perform anti-condensation treatment on the motor. According to the anti-condensation control method of claim 5, wherein, The blocking strategy includes a first blocking strategy and a second blocking strategy; The shielding treatment of the excitation winding based on the shielding strategy includes: Obtain the dew point temperature of the motor under the current environmental conditions; The number of excitation windings that need to be shielded is determined based on the dew point temperature; When the dew point temperature is lower than the set value, the number of the excitation windings is shielded based on the first shielding strategy. When the dew point temperature is higher than the set value, the number of excitation windings is shielded based on the second shielding strategy, wherein the number of excitation windings shielded in the second shielding strategy is greater than the number of excitation windings shielded in the first shielding strategy. According to the anti-condensation control method of claim 6, wherein, The excitation windings are at most two sets; When the dew point temperature is lower than a set value, the method of shielding the number of excitation windings based on the first shielding strategy includes: One set of the excitation windings is shielded so that the set of excitation windings is in an unenergized state. According to the anti-condensation control method of claim 6 or 7, wherein, The excitation windings consist of at least three sets; When the dew point temperature is higher than a set value, the number of excitation windings is shielded based on the second shielding strategy, including: At least two sets of the excitation windings located in asymmetrical positions are shielded so that the resulting at least two sets of the excitation windings are in an unenergized state. The anti-condensation control method according to any one of claims 5 to 8, wherein, The control of the motor operation to perform anti-condensation treatment on the motor includes: The unshielded excitation winding in the motor is energized, and the motor is in a non-operating state and generates heat, so that the surface temperature of the motor is higher than the dew point temperature for condensation, thereby completing the anti-condensation treatment of the motor. The anti-condensation control method according to any one of claims 5 to 9, wherein, Determining whether the indoor unit is running the anti-condensation program includes: In response to the start command signal of the air conditioner's cooling program or dehumidification program, the first running time of the compressor in the air conditioner is obtained; When the first running time is greater than or equal to the first set time, the relative humidity data of the indoor air is obtained based on the humidity detection device installed in the indoor unit; When the relative humidity data is greater than or equal to the set humidity threshold and the motor is not started, it is determined that the indoor unit is running the anti-condensation program. According to the anti-condensation control method of claim 10, wherein, The acquisition of indoor air relative humidity data based on the humidity detection device installed in the indoor unit includes: When the humidity detection device is in a faulty state, if the first running time is greater than or equal to the first set time, it is determined that the indoor unit runs the anti-condensation program. The anti-condensation control method according to any one of claims 5 to 11, wherein, Determining whether the indoor unit is running the anti-condensation program includes: In response to the start command signal of the air conditioner's cooling program or dehumidification program, the first running time of the compressor in the air conditioner is obtained; When the first running time is greater than or equal to the first set time, and the motor is not running, it is determined that the indoor unit is running the anti-condensation program. The anti-condensation control method according to any one of claims 5 to 12, wherein, After the step of controlling the operation of the motor to perform anti-condensation treatment on the motor, the anti-condensation control method further includes: Determine whether the air conditioner meets the conditions for exiting the anti-condensation program; If the air conditioner meets the conditions for exiting the anti-condensation program, the indoor unit will stop running the anti-condensation program. After the preset time for exiting the anti-condensation program is reached, it is determined again whether the anti-condensation program needs to be run again. According to the anti-condensation control method of claim 13, wherein, The determination of whether the air conditioner meets the conditions for exiting the anti-condensation program includes: Obtain the second operating time of the compressor in the air conditioner during the anti-condensation program; When the second running time is greater than or equal to the second set time, it is determined that the air conditioner meets the condition. According to the anti-condensation control method of claim 13 or 14, wherein, After the step of controlling the operation of the motor to perform anti-condensation treatment on the motor, the anti-condensation control method further includes: Determine whether the user has started other programs, wherein the other programs include at least one of the following: air sweeping program, cooling program, heating program, dehumidification program, or formaldehyde removal program; If the user launches other programs, it is determined that the air conditioner meets the conditions. The anti-condensation control method according to any one of claims 13 to 15, wherein, After the step of controlling the operation of the motor to perform anti-condensation treatment on the motor, the anti-condensation control method further includes: The indoor humidity value is obtained based on the humidity detection device installed in the indoor unit; When the humidity value is less than a predetermined value, the air conditioner is determined to meet the condition. An electronic device, comprising: Memory is used to store one or more computer-executable instructions; A processor for calling and executing computer-executable instructions in the memory to implement the method as described in any one of claims 1 to 16. A computer-readable storage medium having stored thereon computer program instructions that, when executed by a processor, implement the method of any one of claims 1 to 16. A computer program for causing a processor to perform the method according to any one of claims 1 to 16. An air conditioner, characterized in that, Controlled by any one of claims 1 to 16, or having an electronic device as described in claim 17.

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