Motor anti-condensation control method, anti-condensation control method, electronic equipment and air conditioner

Abstract

The invention relates to the technical field of air conditioning equipment, in particular to a motor anti-condensation control method, an anti-condensation control method, electronic equipment and an air conditioner. The motor anti-condensation control method comprises the following steps: when there are two groups of excitation windings, shielding one group of excitation windings, so that one group of excitation windings is in a non-power-on state; or, when the number of the exciting windings is more than two, shielding at least two groups of exciting windings at asymmetric positions, so as to enable the at least two groups of exciting windings to be in a non-power-on state; and electrifying an unshielded exciting winding in the motor to enable the motor to be in a non-running state and heat, thereby completing anti-condensation treatment of the motor. According to the invention, part of the excitation windings in the motor are shielded, the rest of the excitation windings which are not shielded are electrified, and the motor emits heat under the condition that the motor does not rotate, so that the surface temperature of the motor is higher than the dew point temperature of condensation, condensation water is prevented from being formed on the motor, and the service life of the motor is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning equipment, and in particular to a motor anti-condensation control method, an anti-condensation control method, an electronic device and an air conditioner. Background Art

[0002] When the air conditioner is running in a high temperature and high humidity environment, when the outlet of the air conditioner blows out cold air, condensation water is likely to form on the motors on the air outlet path of the air conditioner, such as the air guide motor and other parts. If the motor on the air outlet path of the air conditioner is running in the above working conditions for a long time, it is easy to cause the motor to fail.

[0003] In order 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 wind shielding structures at locations such as motors, and use the wind shielding structures to reduce the high-temperature and high-humidity ambient wind from entering the chamber where the motor is located.

[0005] Measure 2: Add sponge to the air conditioner for thermal insulation and waterproofing, so as to use the sponge to reduce the motor from being blown by cold wind, so that the temperature of the motor surface is higher than the dew point temperature of condensation water, avoiding the formation of condensation water on the motor.

[0006] However, the above measures will inevitably increase the design cost of the air conditioner and will also cause the design size of the air conditioner to become larger. On the other hand, the above two measures require multiple structural verifications and structural improvements during the development process, and the development efficiency is low. Summary of the invention

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

[0008] A first aspect of an embodiment of the present invention provides a motor anti-condensation control method, wherein the motor has at least two sets of excitation windings, and the motor anti-condensation control method includes:

[0009] When there are two groups of excitation windings, shielding one group of the excitation windings so that the other group of the excitation windings is in a non-energized state;

[0010] or,

[0011] When there are more than two groups of excitation windings, shielding at least two groups of excitation windings in asymmetric positions, so that at least two groups of excitation windings are in a non-energized state;

[0012] The unshielded excitation winding in the motor is energized so that the motor is in a non-operating state and generates heat, thereby completing the anti-condensation treatment of the motor.

[0013] A second aspect of an embodiment of the present invention provides an anti-condensation control method, which is applied to an indoor unit of an air conditioner, wherein an air outlet path of the indoor unit is provided with a motor, and the motor has at least two sets of excitation windings. The anti-condensation control method comprises:

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

[0015] During the operation of the anti-condensation program by the indoor unit, shielding the excitation winding based on a shielding strategy, wherein the shielding strategy is used to characterize the power-on state of the excitation winding;

[0016] Control the operation of the motor to prevent condensation on the motor

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

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

[0019] Obtaining the dew point temperature of condensation of the motor in the current environmental state;

[0020] determining the amount of the field winding that needs to be shielded based on the dew point temperature;

[0021] When the dew point temperature is lower than a set value, shielding the number of the excitation windings based on the first shielding strategy;

[0022] When the dew point temperature is higher than a set value, the number of the excitation windings is shielded based on the second shielding strategy, wherein the number of the excitation windings shielded in the second shielding strategy is greater than the number of the excitation windings shielded in the first shielding strategy.

[0023] In some embodiments, the number of the excitation windings is at most two;

[0024] When the dew point temperature is lower than a set value, shielding the number of the excitation windings based on the first shielding strategy includes:

[0025] A group of the excitation windings is shielded so that the group of the excitation windings is in a non-energized state.

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

[0027] When the dew point temperature is higher than a set value, shielding the number of the excitation windings based on the second shielding strategy includes:

[0028] At least two groups of the excitation windings at asymmetric positions are shielded so that the at least two groups of the excitation windings are in a non-energized state.

[0029] In some embodiments, controlling the motor to operate so as to perform an anti-condensation treatment on the motor includes:

[0030] The unshielded excitation winding in the motor is controlled to be energized, 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 of condensation, so as to complete 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 a start instruction signal of a cooling program or a dehumidification program of the air conditioner, acquiring a first running time of a compressor in the air conditioner;

[0033] When the first operating time is greater than or equal to a first set time, acquiring relative humidity data of indoor air based on a humidity detection component provided in the indoor unit;

[0034] When the relative humidity data is greater than or equal to a set humidity threshold and the motor is not started, it is determined that the indoor unit runs the anti-condensation program.

[0035] In some implementations, the acquiring the relative humidity data of the indoor air based on the humidity detection element provided in the indoor unit includes:

[0036] When the humidity detection component is in a fault state, when the first operating 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 a start instruction signal of a cooling program or a dehumidification program of the air conditioner, acquiring a first running time of a compressor in the air conditioner;

[0039] When the first operating time is greater than or equal to a first set time and the motor is not operating, it is determined that the indoor unit is operating the anti-condensation program.

[0040] In some embodiments, after the step of controlling the motor to operate so as to perform an anti-condensation treatment on the motor, the anti-condensation control method further comprises:

[0041] Determining whether the air conditioner meets the condition for exiting the anti-condensation program;

[0042] If yes, the indoor unit stops running the anti-condensation program;

[0043] After the preset time of exiting the anti-condensation program, it is determined again whether the anti-condensation program needs to be run.

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

[0045] Acquire a second running time of a compressor in the air conditioner in the anti-condensation program;

[0046] When the second operating time is greater than or equal to a second set time, it is determined that the air conditioner meets the condition.

[0047] In some embodiments, after the step of controlling the motor to operate so as to perform an anti-condensation treatment on the motor, the anti-condensation control method further includes:

[0048] Determining whether the user starts other programs, wherein the other programs include at least one of a purge program, a refrigeration program, a heating program, a dehumidification program, or a formaldehyde removal program;

[0049] If so, it is determined that the air conditioner meets the condition.

[0050] In some embodiments, after the step of controlling the motor to operate so as to perform an anti-condensation treatment on the motor, the anti-condensation control method further comprises:

[0051] Acquiring an indoor humidity value based on a humidity detection element provided in the indoor unit;

[0052] When the humidity value is less than a predetermined value, it is determined that the air conditioner meets the condition.

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

[0054] a memory for storing one or more computer executable instructions;

[0055] A processor is used to call and execute computer executable instructions in the memory, so as to implement the method as described in the first aspect or any one of the second aspects.

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

[0057] Compared with the prior art, the beneficial effects of the present invention are mainly:

[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 groups of excitation windings, and the motor anti-condensation control method includes: when there are two groups of excitation windings in the motor, shielding one group of excitation windings so that the group of excitation windings is in a non-powered state; or, when there are more than two groups of excitation windings in the motor, shielding at least two groups of excitation windings in asymmetric positions so that the at least two groups of excitation windings are in a powered state; then, energizing the unshielded excitation windings in the motor so that the motor is in a non-operating state and generates heat, completing the anti-condensation treatment of the motor. Among them, when the unshielded excitation windings in the motor are energized, the motor will generate heat without rotating, so that the surface temperature of the motor is higher than the dew point temperature of condensation, so as to prevent the formation of condensation water on the motor, thereby effectively improving the use efficiency of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0060] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

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

[0062] Figure 2 is a step flow chart of an anti-condensation control method according to an embodiment of the present invention;

[0063] Figure 3 is another step flow chart of an anti-condensation control method according to an embodiment of the present invention;

[0064] Figure 4 The present invention is a logic judgment flow chart of an anti-condensation control method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0065] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0066] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "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 only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0068] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0069] 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 are intended to be used 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. The motor can be used in an air conditioner. Specifically, the motor can be set on the air outlet path of the air conditioner. For example, the motor can be a wind guide motor that drives the air guide plate to rotate. Alternatively, the motor can also be a wind sweeping motor that drives the left and right wind sweeping plates at the air outlet position of the air conditioner. Alternatively, 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, and the phase motor can include but is not limited to a stepper motor. A stepper motor is also called a pulse motor. A pulse motor is a motor that advances a certain angle each time the excitation state is changed according to a certain pulse signal input. Taking a four-phase motor as an example, the motor is mainly composed of four pairs of excitation windings and a permanent magnet rotor. When the pulse current passes through, each adjacent two-phase excitation winding is energized in sequence, so that it has magnetism and drives the rotor to rotate, while generating heat.

[0072] When the above motor is used in a high temperature and high humidity environment, condensation water will form on certain parts of the motor due to the temperature difference. If the motor is operated in a high temperature and high humidity environment for a long time, it is easy to cause the motor to malfunction. Based on this, an exemplary embodiment of the present invention provides a motor anti-condensation control method, such as Figure 1 As shown, the motor has at least two sets of excitation windings, that is, the excitation windings in the motor can be two sets, three sets, or four sets or more. Then the motor anti-condensation control method of this embodiment includes the following steps:

[0073] Step S10: When there are two groups of excitation windings, shield one group of the excitation windings so that the other group of the excitation windings is in a non-powered state.

[0074] Step S20: When there are more than two groups of excitation windings, shield at least two groups of excitation windings at asymmetric positions, so that at least two groups of excitation windings are in a non-powered state.

[0075] Step S30: energize the unshielded excitation winding in the motor so that the motor is in a non-operating state and generates heat, thereby completing the anti-condensation treatment of the motor.

[0076] In step S10, when there are two sets of excitation windings in the motor, that is, a two-phase motor, any one of the two sets of excitation windings is shielded so that the shielded excitation winding is in a non-energized state.

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

[0078] In step S20, when there are three or four or more groups of excitation windings in the motor, at least two groups of excitation windings in asymmetric positions are shielded so that the at least two groups of excitation windings are in a non-energized state.

[0079] In step S30, the unshielded excitation windings in the motor are energized. At this time, some groups of excitation windings in the motor are not energized, so that the motor cannot complete a full winding cycle and cannot operate. However, some groups of excitation windings in the motor are energized at this time. These groups of excitation windings will generate heat due to energization, thereby causing the motor to generate heat without rotating, thereby increasing the temperature of the motor surface, making the motor surface temperature higher than the dew point temperature of condensation, thereby achieving anti-condensation treatment of the motor and effectively increasing the service life of the motor.

[0080] When there are three groups of excitation windings, namely, group X, group Y and group Z, any two of the three groups of excitation windings can be shielded. For example, only group Z can be energized when groups X and Y are connected. Alternatively, group Y and group Z can be shielded, and only group X can be energized. Alternatively, group X and group Z can be shielded, and only group Y can be energized.

[0081] When there are four groups of excitation windings, that is, group A, group B, group C and group D are arranged in sequence, wherein group A is symmetrically arranged with group C, and group B is symmetrically arranged with group D. At least two of the four groups of excitation windings in asymmetrical positions are shielded, so that the at least two groups of excitation windings are in a non-energized state, and the remaining unshielded excitation windings are in a powered state.

[0082] Take shielding two groups of excitation windings in asymmetric positions as an example, for example, shielding groups B and C, and energizing groups A and D. Alternatively, shielding groups A and B, and energizing groups C and D. Alternatively, shielding groups A and D, and energizing groups B and C. Alternatively, shielding groups C and D, and energizing groups A and B. The above-mentioned shielding combinations can make the motor generate heat without rotating, thereby increasing the temperature of the motor surface, making the motor surface temperature higher than the dew point temperature of condensation, realizing anti-condensation treatment of the motor, and effectively increasing the service life of the motor.

[0083] Take shielding three groups of excitation windings in asymmetric positions as an example, for example, shielding groups A, B and C, and only energizing group D. Alternatively, shielding groups B, C and D, and only energizing group A. Alternatively, shielding groups A, D and C, and only energizing group B. Alternatively, shielding groups A, B and D, and only energizing group C. The above-mentioned shielding combinations can make the motor generate heat without rotating, thereby increasing the temperature of the motor surface, making the motor surface temperature higher than the dew point temperature of condensation, realizing anti-condensation treatment of the motor, and effectively increasing the service life of the motor.

[0084] It should be noted that in the above examples, the situation where the motor is powered but not running is divided into single-phase power supply or two-phase power supply. Single-phase is used to represent one set of excitation windings in the motor, and two-phase power supply is used to represent the power supply of two sets of excitation windings in asymmetric positions. Among them, the surface temperature of the motor when single-phase power supply is used is slightly lower than the surface temperature of the motor when two-phase power supply is used.

[0085] In one example, when the motor is running in an extremely high temperature and high humidity environment, the ambient temperature of the motor is 35°C and the ambient humidity is 90%, and the dew point temperature for condensation to form on the motor is calculated to be 33.33°C. When the motor is powered on in a single phase, the surface temperature of the motor can reach 38°C. When the motor is powered on in two phases, the surface temperature of the motor can reach 50°C. That is to say, no matter whether the motor is powered on in a single phase or in two phases, the surface temperature of the motor is higher than the dew point temperature of condensation, thereby suppressing the formation of condensation on the motor, realizing the anti-condensation treatment of the motor, and effectively ensuring and improving the service life of the motor.

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

[0087] The motor can be a phase motor, which can include but is not limited to a stepper motor. A stepper motor is also called a pulse motor, which is a motor that advances a certain angle each time the excitation state is changed according to a certain pulse signal input. Taking a four-phase motor as an example, the motor is mainly composed of four pairs of excitation windings and a permanent magnet rotor. When the pulse current passes through, each adjacent two-phase excitation winding is energized in sequence, so that it has magnetism and drives the rotor to rotate, while 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 an anti-condensation program.

[0090] Step S200: When the indoor unit is running the anti-condensation program, the excitation winding is shielded based on a shielding strategy, where the shielding strategy is used to characterize the power-on state of the excitation winding.

[0091] Step S300: controlling the motor to run so as to perform anti-condensation treatment on the motor.

[0092] In step S100, whether the indoor unit is running the anti-condensation program can be confirmed through the following three situations.

[0093] Case 1:

[0094] In response to the start command signal of the cooling program or the dehumidification program of the air conditioner, the first operation time T1 of the compressor in the air conditioner is obtained based on the control system of the air conditioner. Among them, the first operation time T1 of the compressor can be determined based on the operation state of the compressor in the outdoor unit of the air conditioner by the control system of the indoor unit. It should be noted that the first operation time T1 can be the operation time of the compressor from the start to the stable stage, or the first operation time T1 can also be the operation time of the compressor in the stable stage.

[0095] Among them, the control system of the air conditioner or the control system of the indoor unit can adopt the control system in the prior art, as long as the control system can control various startup functions of the air conditioner or the indoor unit, and the specific structure type and specific control logic of the control system will not be repeated here.

[0096] When the first running time T1 of the compressor 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 When the temperature is low, the relative humidity data of the room is obtained through the humidity detection component set in the indoor unit.

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

[0098] 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 runs the anti-condensation program. The set humidity threshold is a range value, and the value range of the set humidity threshold is between 75% and 90%.

[0099] Case 2:

[0100] In response to a start command signal of a cooling program or a dehumidification program of the air conditioner, a first operation time T1 of a compressor in the air conditioner is acquired based on a control system of the air conditioner. The first operation time T1 of the compressor can be determined based on the operation state of a compressor in an outdoor unit of the air conditioner by a control system of the indoor unit.

[0101] When the control system detects and determines that the humidity detection element in the indoor unit is in a fault state, for example, the detection data is inaccurate, or the control system fails to obtain the detection data of the humidity detection element for a long time, the first operating time T1 is compared with the first set time T 设1 for comparison.

[0102] The first operating 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 When the indoor unit is directly controlled to run anti-condensation measures.

[0103] Case 3:

[0104] When the indoor unit is not provided with a humidity detection element, in response to a start command signal of a cooling program or a dehumidification program of the air conditioner, the first operation time T1 of the compressor in the air conditioner is acquired based on the control system of the air conditioner. The first operation time T1 of the compressor can be determined based on the operation state of the compressor in the outdoor unit of the air conditioner by the control system of the indoor unit.

[0105] The first operating 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 When the indoor unit is directly controlled to run anti-condensation measures.

[0106] In step S200 and step S300, when the indoor unit is running the anti-condensation program, the following method can be used to shield the excitation winding in the motor. 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 generates heat, 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 following methods can be used to control the power supply of the unshielded excitation winding in the motor: using the control system to control the indoor unit to run the air sweeping program, etc.

[0108] Among them, the specific shielding treatment and anti-condensation treatment process includes the following methods:

[0109] Based on the environment in which the motor is located, the dew point temperature of condensation of the motor in the current environment state is calculated by the control system.

[0110] Then, the control system determines the number of shielding of the excitation winding in the motor according to the dew point temperature. The dew point temperature of the condensed water can be obtained by calculation using the existing technology, which will not be described in detail here.

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

[0112] It should be noted that the set value in this example can be flexibly set by the user, or can be a value set when the air conditioner leaves the factory, and the specific data of the set value is not limited here.

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

[0114] When the dew point temperature is lower than the set value, it indicates that the humidity parameter value in the environment where the indoor unit is located may be relatively small. At this time, in order to increase the surface temperature of the motor under low consumption, any group of excitation windings can be shielded so that the group of excitation windings is in an unpowered state, and only the other group of unshielded excitation windings is controlled to be energized.

[0115] Based on this, one of the excitation windings in the motor failed to be energized, making it impossible for the motor to complete a complete winding cycle and thus unable to operate. However, at this time, another set of excitation windings in the motor was energized. The excitation winding in the energized state would generate heat due to the power being energized, thereby causing the motor to generate heat without rotating, thereby increasing the temperature of the motor surface, making the motor surface temperature higher than the dew point temperature of condensation, thereby achieving anti-condensation treatment for the motor and effectively increasing 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, wherein the number of shielded excitation windings in the second shielding strategy is greater than the number of shielded excitation windings in the first shielding strategy.

[0117] In another specific example, the number of excitation windings in the motor is at least three, for example, the number of excitation windings is three, four or more than four.

[0118] When the dew point temperature is higher than a set value, at least two groups of excitation windings at asymmetric positions are shielded so that the at least two groups of excitation windings are in a non-energized state.

[0119] When there are three groups of excitation windings, namely, group X, group Y and group Z, any two of the three groups of excitation windings can be shielded. For example, only group Z can be energized while group X and group Y are energized. Alternatively, group Y and group Z can be shielded, and only group X can be energized. Alternatively, group X and group Z can be shielded, and only group Y can be energized.

[0120] When there are four groups of excitation windings, that is, group A, group B, group C and group D are arranged in sequence, wherein group A is symmetrically arranged with group C, and group B is symmetrically arranged with group D. At least two of the four groups of excitation windings in asymmetrical positions are shielded, so that the at least two groups of excitation windings are in a non-energized state, and the remaining unshielded excitation windings are in a powered state.

[0121] Take shielding two groups of excitation windings in asymmetric positions as an example, for example, shielding groups B and C, and energizing groups A and D. Alternatively, shielding groups A and B, and energizing groups C and D. Alternatively, shielding groups A and D, and energizing groups B and C. Alternatively, shielding groups C and D, and energizing groups A and B. The above-mentioned shielding combinations can make the motor generate heat without rotating, thereby increasing the temperature of the motor surface, making the motor surface temperature higher than the dew point temperature of condensation, realizing anti-condensation treatment of the motor, and effectively increasing the service life of the motor.

[0122] Take shielding three groups of excitation windings in asymmetric positions as an example, for example, shielding groups A, B and C, and only energizing group D. Alternatively, shielding groups B, C and D, and only energizing group A. Alternatively, shielding groups A, D and C, and only energizing group B. Alternatively, shielding groups A, B and D, and only energizing group C. The above-mentioned shielding combinations can make the motor generate heat without rotating, thereby increasing the temperature of the motor surface, making the motor surface temperature higher than the dew point temperature of condensation, realizing anti-condensation treatment of the motor, and effectively increasing the service life of the motor.

[0123] It should be noted that in the above examples, the situation where the motor is powered but not running is divided into single-phase power supply or two-phase power supply. Single-phase is used to represent one set of excitation windings in the motor, and two-phase power supply is used to represent the power supply of two sets of excitation windings in asymmetric positions. Among them, the surface temperature of the motor when single-phase power supply is used is slightly lower than the surface temperature of the motor when two-phase power supply is used.

[0124] In one example, when the motor is running in an extremely high temperature and high humidity environment, the ambient temperature of the motor is 35°C and the ambient humidity is 90%, and the dew point temperature for condensation to form on the motor is calculated to be 33.33°C. When the motor is powered on in a single phase, the surface temperature of the motor can reach 38°C. When the motor is powered on in two phases, the surface temperature of the motor can reach 50°C. That is to say, no matter whether the motor is powered on in a single phase or in two phases, the surface temperature of the motor is higher than the dew point temperature of condensation, thereby suppressing the formation of condensation on the motor, realizing the anti-condensation treatment of the motor, and effectively ensuring and improving the service life of the motor.

[0125] In this example, when the unshielded excitation winding in the motor is energized, the motor will generate heat without rotating, so that the surface temperature of the motor is higher than the dew point temperature of condensation, thereby preventing condensation from forming on the motor, thereby effectively improving the use efficiency of the motor.

[0126] On the other hand, by implementing the above-mentioned anti-condensation control method, it is possible to avoid adding a windshield structure for the motor in the air conditioner, or avoid adding structures such as sponges in the air conditioner to prevent condensation water from forming on the motor. Among them, if a windshield structure or a sponge is used as a thermal insulation material, multiple structural verifications and structural improvements are required during the development of the above-mentioned structure. In this example, only the control logic of the motor is controlled, and there is no need to add a windshield structure or thermal insulation materials such as sponges. This effectively saves the development process of the air conditioner improvement. Therefore, it can effectively reduce the design and production cost of the air conditioner, and is also conducive to the miniaturization design of the air conditioner. At the same time, it can also effectively improve the use efficiency of the motor and effectively enhance the user's experience of using the air conditioner.

[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, has high versatility, and can effectively improve the development efficiency of air conditioners.

[0128] like Figure 3 And refer to Figure 4 As shown, in some embodiments, after the step of 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 yes, the indoor unit stops running the anti-condensation program.

[0131] Step S600: After the anti-condensation program is exited for a preset time, it is determined again whether the anti-condensation program needs to be run.

[0132] In step S400 and step S500, the control system of the air conditioner determines whether the air conditioner meets the conditions for exiting the anti-condensation program. When the air conditioner meets the following conditions, it can be determined that the air conditioner meets the conditions for exiting the anti-condensation program.

[0133] Condition one:

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

[0135] Condition two:

[0136] The control system determines whether the user has started other programs, and the other programs include at least one of the air sweeping program, cooling program, heating program, dehumidification program or formaldehyde removal program. That is to say, when the user manually controls the air conditioner to run any of the above programs through the remote control or the intelligent control terminal, the indoor unit or the air conditioner needs to execute other programs to achieve the corresponding functions. At this time, it can also be determined that the air conditioner meets the conditions for exiting the anti-condensation program.

[0137] The control system controls the air conditioner to exit the anti-condensation program.

[0138] Condition three:

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

[0140] The humidity value is compared with a predetermined value, wherein the setting range of the predetermined value may include any value between 60% and 75%. When the humidity value is less than the predetermined value, it indicates that the indoor humidity value is low at this time, and condensation water will not form on the motor when the motor is not started. At this time, it can also be determined that the air conditioner meets the conditions for exiting 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 control system of the air conditioner again determines whether the air conditioner still needs to run the anti-condensation program according to the above step S100.

[0142] An exemplary embodiment of the present invention further 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. The computer executable instructions can be called by the processor to execute the motor anti-condensation control method or the anti-condensation control method in the above embodiment.

[0143] An exemplary embodiment of the present invention further provides an air conditioner. The air conditioner is controlled by using the motor anti-condensation control method or the anti-condensation control method in any of the above embodiments; or, the air conditioner has an electronic device in the above embodiments.

[0144] In the above example, by shielding part of the excitation winding in the motor, the unshielded excitation winding will generate heat without rotating after being energized, so that the surface temperature of the motor is higher than the dew point temperature of condensation, thereby preventing condensation from forming on the motor, thereby effectively improving the use efficiency of the motor.

[0145] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0146] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A motor anti-condensation control method, wherein the motor has at least two sets of excitation windings, characterized in that: The motor anti-condensation control method comprises: When there are two groups of excitation windings, shielding one group of the excitation windings so that the other group of the excitation windings is in a non-energized state; or, When there are more than two groups of excitation windings, shielding at least two groups of excitation windings in asymmetric positions, so that at least two groups of excitation windings are in a non-energized state; The unshielded excitation winding in the motor is energized so that the motor is in a non-operating state and generates heat, thereby completing the anti-condensation treatment of the motor.

2. An anti-condensation control method, applied to an indoor unit of an air conditioner, wherein the indoor unit has a motor on the air outlet path, and the motor has at least two sets of excitation windings, characterized in that: The anti-condensation control method comprises: Determining whether the indoor unit is running an anti-condensation program; During the operation of the anti-condensation program by the indoor unit, shielding the excitation winding based on a shielding strategy, wherein the shielding strategy is used to characterize the power-on state of the excitation winding; The motor is controlled to run so as to perform an anti-condensation treatment on the motor.

3. The anti-condensation control method according to claim 2, characterized in that: The shielding strategy includes a first shielding strategy and a second shielding strategy; The shielding process of the excitation winding based on the shielding strategy includes: Obtaining the dew point temperature of condensation of the motor in the current environmental state; determining the amount of the field winding that needs to be shielded based on the dew point temperature; When the dew point temperature is lower than a set value, shielding the number of the excitation windings based on the first shielding strategy; When the dew point temperature is higher than a set value, the number of the excitation windings is shielded based on the second shielding strategy, wherein the number of the excitation windings shielded in the second shielding strategy is greater than the number of the excitation windings shielded in the first shielding strategy.

4. The anti-condensation control method according to claim 3, characterized in that: The number of the excitation windings is at most two; When the dew point temperature is lower than a set value, shielding the number of the excitation windings based on the first shielding strategy includes: A group of the excitation windings is shielded so that the group of the excitation windings is in a non-energized state.

5. The anti-condensation control method according to claim 3, characterized in that: The excitation windings are at least three groups; When the dew point temperature is higher than a set value, shielding the number of the excitation windings based on the second shielding strategy includes: At least two groups of the excitation windings at asymmetric positions are shielded so that the at least two groups of the excitation windings are in a non-energized state.

6. The anti-condensation control method according to claim 2, characterized in that: The controlling the motor to operate so as to perform an anti-condensation treatment on the motor includes: The unshielded excitation winding in the motor is controlled to be energized, 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 of condensation, so as to complete the anti-condensation treatment of the motor.

7. The anti-condensation control method according to claim 2, characterized in that: The determining whether the indoor unit runs the anti-condensation program includes: In response to a start instruction signal of a cooling program or a dehumidification program of the air conditioner, acquiring a first running time of a compressor in the air conditioner; When the first operating time is greater than or equal to a first set time, acquiring relative humidity data of indoor air based on a humidity detection component provided in the indoor unit; When the relative humidity data is greater than or equal to a set humidity threshold and the motor is not started, it is determined that the indoor unit runs the anti-condensation program.

8. The anti-condensation control method according to claim 7, characterized in that: The step of obtaining the relative humidity data of the indoor air based on the humidity detection element provided in the indoor unit comprises: When the humidity detection component is in a fault state, when the first operating time is greater than or equal to the first set time, it is determined that the indoor unit runs the anti-condensation program.

9. The anti-condensation control method according to claim 2, characterized in that: The determining whether the indoor unit runs the anti-condensation program includes: In response to a start instruction signal of a cooling program or a dehumidification program of the air conditioner, acquiring a first running time of a compressor in the air conditioner; When the first operating time is greater than or equal to a first set time and the motor is not operating, it is determined that the indoor unit is operating the anti-condensation program.

10. The anti-condensation control method according to any one of claims 2 to 9, characterized in that: After the step of controlling the motor to operate so as to perform an anti-condensation treatment on the motor, the anti-condensation control method further includes: Determining whether the air conditioner meets the condition for exiting the anti-condensation program; If yes, the indoor unit stops running the anti-condensation program; After the preset time of exiting the anti-condensation program, it is determined again whether the anti-condensation program needs to be run.

11. The anti-condensation control method according to claim 10, characterized in that: The determining whether the air conditioner meets the condition for exiting the anti-condensation program includes: Acquire a second running time of the compressor in the air conditioner in the anti-condensation program; When the second operating time is greater than or equal to a second set time, it is determined that the air conditioner meets the condition.

12. The anti-condensation control method according to claim 10, characterized in that: After the step of controlling the motor to operate so as to perform an anti-condensation treatment on the motor, the anti-condensation control method further includes: Determining whether the user starts other programs, wherein the other programs include at least one of a purge program, a refrigeration program, a heating program, a dehumidification program, or a formaldehyde removal program; If so, it is determined that the air conditioner meets the condition.

13. The anti-condensation control method according to claim 10, characterized in that: After the step of controlling the motor to operate so as to perform an anti-condensation treatment on the motor, the anti-condensation control method further includes: Acquiring an indoor humidity value based on a humidity detection element provided in the indoor unit; When the humidity value is less than a predetermined value, it is determined that the air conditioner meets the condition.

14. An electronic device, characterized in that: The electronic device comprises: a memory for storing one or more computer executable instructions; A processor, configured to call and execute computer executable instructions in the memory, thereby implementing the method according to any one of claims 1 to 13.

15. An air conditioner, characterized in that: The method according to any one of claims 1 to 13 is used for control, or the electronic device according to claim 14 is provided.

Images