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

Abstract

This invention relates to the field of air conditioning equipment technology, and in particular to a motor anti-condensation control method, an electronic device, and an air conditioner. The motor anti-condensation control method includes: when there are two sets of excitation windings, shielding one set of excitation windings to render it unenergized; or, when there are two or more sets of excitation windings, shielding at least two sets of excitation windings in asymmetrical positions to render at least two sets of excitation windings unenergized; energizing the unshielded excitation windings in the motor to render the motor non-operating and generate heat, thus completing the anti-condensation treatment of the motor. In this invention, by shielding part of the excitation windings in the motor and energizing the remaining unshielded excitation windings, 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 extending the service life of the motor.

Description

Technical Field

[0001] This invention 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

[0002] 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.

[0003] To prevent condensation from forming on the motor in the air outlet path of the air conditioner, the following two measures are generally adopted;

[0004] Measure 1: Add windproof structures to locations such as motors to reduce the amount of hot and humid ambient air entering the motor chamber.

[0005] 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.

[0006] However, these measures will inevitably increase the design cost of air conditioners and also lead to larger design dimensions. On the other hand, both of these measures require multiple structural verifications and improvements during the development process, resulting in low development efficiency. Summary of the Invention

[0007] In view of this, the present invention provides a motor anti-condensation control method, an electronic device, and an air conditioner to solve the problem that the motor in the air outlet path of the existing air conditioner is prone to condensation, resulting in a short service life of the motor.

[0008] A first aspect of this invention provides a method for preventing condensation in a motor, wherein the motor has at least two sets of excitation windings, and the method includes:

[0009] 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.

[0010] or,

[0011] 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.

[0012] 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.

[0013] A second aspect of this invention provides an anti-condensation control method applied to the indoor unit of an air conditioner, wherein the indoor unit has a motor in its air outlet path, the motor having at least two sets of excitation windings, and the anti-condensation control method includes:

[0014] Determine whether the indoor unit is running the anti-condensation program;

[0015] 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.

[0016] Control the operation of the motor to perform anti-condensation treatment on the motor.

[0017] In some implementations, the shielding strategy includes a first shielding strategy and a second shielding strategy;

[0018] The shielding treatment of the excitation winding based on the shielding strategy includes:

[0019] Obtain the dew point temperature of the motor under the current environmental conditions;

[0020] The number of excitation windings that need to be shielded is determined based on the dew point temperature;

[0021] 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.

[0022] 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.

[0023] In some embodiments, the excitation windings are at most two sets;

[0024] 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:

[0025] One set of the excitation windings is shielded so that the set of excitation windings is in an unenergized state.

[0026] In some embodiments, the excitation windings are at least three sets;

[0027] 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:

[0028] 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.

[0029] In some embodiments, controlling the operation of the motor to perform anti-condensation treatment on the motor includes:

[0030] 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.

[0031] In some implementations, determining whether the indoor unit is running the anti-condensation program includes:

[0032] 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;

[0033] 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;

[0034] 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.

[0035] In some embodiments, acquiring the relative humidity data of indoor air based on the humidity detection device installed in the indoor unit includes:

[0036] 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.

[0037] In some implementations, determining whether the indoor unit is running the anti-condensation program includes:

[0038] 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;

[0039] 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.

[0040] In some embodiments, 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:

[0041] Determine whether the air conditioner meets the conditions for exiting the anti-condensation program;

[0042] If so, the indoor unit will stop running the anti-condensation program;

[0043] 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.

[0044] In some implementations, determining whether the air conditioner meets the conditions for exiting the anti-condensation program includes:

[0045] Obtain the second operating time of the compressor in the air conditioner during the anti-condensation program;

[0046] 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.

[0047] In some embodiments, 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:

[0048] 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;

[0049] If so, then the air conditioner is determined to meet the condition.

[0050] In some embodiments, 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:

[0051] The indoor humidity value is obtained based on the humidity detection device installed in the indoor unit;

[0052] When the humidity value is less than a predetermined value, the air conditioner is determined to meet the condition.

[0053] A third aspect of the present invention provides an electronic device, the electronic device comprising:

[0054] Memory is used to store one or more computer-executable instructions;

[0055] A processor for calling and executing computer-executable instructions in the memory to implement the method as described in either the first aspect or the second aspect.

[0056] A fourth aspect of the present invention provides an air conditioner that is controlled by the method described in the first or second aspect, or has electronic equipment as described in the third aspect.

[0057] Compared with the prior art, the main advantages of the present invention are as follows:

[0058] In the motor anti-condensation control method, anti-condensation control method, electronic device, and air conditioner of the present invention, 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 in asymmetrical positions 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 for condensation, preventing the formation of condensation on the motor, and effectively improving the efficiency of the motor. Attached Figure Description

[0059] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0060] 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 the present invention 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 effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0061] Figure 1 This is a flowchart of the steps of a motor anti-condensation control method according to an embodiment of the present invention;

[0062] Figure 2 This is a flowchart of a method for preventing condensation control according to an embodiment of the present invention;

[0063] Figure 3 This is another flowchart of a method for preventing condensation control according to an embodiment of the present invention;

[0064] Figure 4 This is a logic judgment flowchart of an anti-condensation control method according to an embodiment of the present invention. Detailed Implementation

[0065] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0066] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” used in the embodiments of this invention 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.

[0067] 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.

[0068] 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.

[0069] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0070] An exemplary embodiment of the present invention 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.

[0071] 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.

[0072] 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. Based on this, an exemplary embodiment of the present invention provides a method for preventing condensation in a motor, such as... Figure 1 As shown, the motor has at least two sets of excitation windings, meaning that the motor can have two, three, four, or more sets of excitation windings. Therefore, the motor anti-condensation control method of this embodiment includes the following steps:

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] It should be noted that, based on the control program, the motor's control system can energize the corresponding excitation windings in the motor, while de-energizing the excitation windings that need to be shielded.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] like Figure 2 As shown, an exemplary embodiment of the present invention provides an anti-condensation control method applied to the indoor unit of an air conditioner. A motor is provided in the air outlet path of the indoor unit, and the motor has at least two sets of excitation windings. The motor can be a guide motor that drives the air guide vane to rotate. Alternatively, the motor can be a sweeping motor that drives the left and right sweeping vanes at the air outlet position of the air conditioner, etc.

[0087] 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.

[0088] like Figure 2 And refer to Figure 4 As shown, the anti-condensation control method includes the following steps:

[0089] Step S100: Determine whether the indoor unit is running the anti-condensation program.

[0090] Step S200: During the operation of the anti-condensation program of the indoor unit, the excitation winding is shielded based on the shielding strategy. The shielding strategy is used to characterize the energization state of the excitation winding.

[0091] Step S300: Control the motor to run in order to prevent condensation on the motor.

[0092] In step S100, the following three conditions can be used to confirm whether the indoor unit is running the anti-condensation program.

[0093] Scenario 1:

[0094] In response to the start command signal of the air conditioner's cooling or dehumidifying program, the first operating time T1 of the compressor in the air conditioner is obtained based on the air conditioner's control system. This first operating time T1 can be determined by the indoor unit's control system based on the operating status of the compressor in the outdoor unit. It should be noted that the first operating time T1 can be the operating time of the compressor from start-up to the stable phase, or it can also be the operating time of the compressor during the stable phase.

[0095] The control system of the air conditioner or the control system of the indoor unit can be a control system in the existing 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 and control logic of the control system will not be elaborated here.

[0096] When the compressor's first operating time T1 is greater than or equal to the first set time T 设1 That is, T1 is greater than or equal to T. 设1 Then, the indoor relative humidity data is obtained through the humidity detection device set in the indoor unit.

[0097] The humidity detection device may include, but is not limited to, humidity sensors, temperature and humidity sensors, etc. First set time T 设1 It can be any value between 3 min and 10 min.

[0098] 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%.

[0099] Scenario 2:

[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. This can be determined by the indoor unit's control system based on the operating status of the compressor in the outdoor unit.

[0101] When the control system detects and determines that the humidity sensor in the indoor unit is malfunctioning, such as inaccurate detection data or the control system failing to obtain humidity sensor data for an extended period, the first running time T1 is compared with the first set time T. 设1 Compare them.

[0102] The first running time T1 is greater than or equal to the first set time T 设1 That is, T0 is greater than or equal to T 设1 At that time, directly control the operation of the indoor unit to prevent condensation.

[0103] Scenario 3:

[0104] When the indoor unit does not have a humidity sensor, 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. This can be achieved by the indoor unit's control system determining the first operating time T1 of the compressor based on the operating status of the compressor in the outdoor unit.

[0105] The first running time T1 is greater than or equal to the first set time T 设1 That is, T0 is greater than or equal to T 设1 At that time, directly control the operation of the indoor unit to prevent condensation.

[0106] In steps S200 and S300, during the operation of the anti-condensation program in the indoor unit, the following method can be used to shield the excitation winding in the motor. After shielding the excitation winding, the unshielded excitation winding in the motor is energized, and the motor is in a non-operating state and heats up, so that the surface temperature of the motor is higher than the dew point temperature of condensation, thereby completing the anti-condensation treatment of the motor.

[0107] It should be noted that the unshielded excitation winding in the motor can be energized by the following methods: using the control system to control the indoor unit to run the air swing program, etc.

[0108] The specific shielding and anti-condensation processes include the following methods:

[0109] 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.

[0110] 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 existing technology, and will not be elaborated upon here.

[0111] When the dew point temperature is lower than the set value, the number of excitation windings is shielded based on the first shielding strategy.

[0112] It should be noted that the settings in this example can be flexibly set by the user or the values ​​set when the air conditioner leaves the factory. The specific data of the settings are not limited here.

[0113] In a specific example, the motor has only two sets of excitation windings.

[0114] 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, any one of the excitation windings can be shielded, so that the excitation winding is not energized, and only the other unshielded excitation winding is energized.

[0115] 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.

[0116] 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.

[0117] In another specific example, the motor has at least three sets of excitation windings, such as three, four or more sets of excitation windings.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] 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.

[0122] 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] It should be noted that the anti-condensation control method in this example can also be applied to indoor units of different air conditioners, demonstrating high versatility and effectively improving the development efficiency of air conditioners.

[0128] like Figure 3 And refer to Figure 4 As shown, in some embodiments, after performing anti-condensation treatment on the motor, the anti-condensation control method further includes the following steps:

[0129] Step S400: Determine whether the air conditioner meets the conditions for exiting the anti-condensation program.

[0130] Step S500: If so, the indoor unit stops running the anti-condensation program.

[0131] Step S600: After the preset time for exiting the anti-condensation program has elapsed, determine again whether the anti-condensation program still needs to be run.

[0132] 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 meets the conditions for exiting the anti-condensation program when it meets the following conditions.

[0133] Condition one:

[0134] The control system obtains the second operating time T2 of the compressor in the anti-condensation program of the air conditioner. When the second operating time T2 is greater than or equal to the second set time T... 设2 When the time is set, it indicates that the air conditioner has met the conditions to exit the anti-condensation program, and the air conditioner can be controlled to exit the anti-condensation program at this time. The value range of the second set time is between 120 minutes and 600 minutes.

[0135] Condition two:

[0136] The control system determines whether the user has activated other programs, which must include at least one of the following: air swing, cooling, heating, dehumidification, or formaldehyde removal. In other words, when the user manually controls the air conditioner to run any of these programs via remote control or smart control terminal, the indoor unit or air conditioner needs to execute other programs to achieve the corresponding function. At this point, it can also be determined that the air conditioner meets the conditions to exit the anti-condensation program.

[0137] The air conditioner is deactivated from the anti-condensation program by the control system.

[0138] Condition three:

[0139] The indoor humidity value is obtained based on the humidity detection device installed in the indoor unit. That is, the humidity value of the room where the motor is located can be obtained through the humidity sensor or temperature and humidity sensor installed in the indoor unit.

[0140] The humidity value is compared with a preset value, which can be any value between 60% and 75%. When the humidity value is lower than the preset value, it indicates that the indoor humidity is low and condensation will not form on the motor when it is not running. In this case, the air conditioner meets the conditions to exit the anti-condensation program, and the control system controls the air conditioner to exit the anti-condensation program.

[0141] 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.

[0142] An exemplary embodiment of the present invention also provides an electronic device, which includes a processor and a memory connected to the processor. The memory 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.

[0143] An exemplary embodiment of the present invention also provides an air conditioner. 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 equipment described in the above embodiments.

[0144] 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.

[0145] Other embodiments of the invention 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 the invention that follow the general principles of the invention 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 the invention are indicated by the following claims.

[0146] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A method for preventing condensation, applied to the indoor unit of an air conditioner, wherein the indoor unit has a motor in its air outlet path, the motor having at least two sets of excitation windings, characterized in that, 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; 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. 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.

2. The anti-condensation control method according to claim 1, characterized in that, 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.

3. The anti-condensation control method according to claim 2, characterized in that, 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.

4. The anti-condensation control method according to claim 3, characterized in that, 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.

5. The anti-condensation control method according to claim 1, characterized in that, 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.

6. The anti-condensation control method according to any one of claims 1 to 5, characterized in that, 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 so, 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.

7. The anti-condensation control method according to claim 6, characterized in that, 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.

8. The anti-condensation control method according to claim 7, characterized in that, 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 so, then the air conditioner is determined to meet the condition.

9. The anti-condensation control method according to claim 8, characterized in that, 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.

10. An electronic device, characterized in that, The electronic device includes: 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 9.

11. An air conditioner, characterized in that, Controlled by any one of claims 1 to 9, or having an electronic device as described in claim 10.

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