Motor cooling component, control method, control device and electrical equipment

[0076] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other implementations obtained by those of ordinary skill in the art without creative work are within the scope of protection of this application.

[0077] figure 1 It is a schematic diagram of the structure of the motor cooling assembly provided by an embodiment of this application, such as figure 1 As shown, the motor cooling component 1 includes:

[0078] A plurality of cold air ducts 10, wherein each cold air duct 10 can output a cold air that can reach the motor 2, and the cold air output by each cold air duct 10 reaches the motor 2 at a different position, In addition, the multiple channels of cold air output from the multiple cold air ducts 10 uniformly distribute the temperature of the motor 2.

[0079] Specifically, in practical applications, such as figure 1 As shown, the cold air ducts 10 can be connected by connecting pieces to form a fixed structure. The cold air duct 10 and the connecting piece may be an integral structure, or the cold air duct 10 and the connecting piece may also be Removable connection. Such as figure 2 As shown, figure 2 It is a schematic structural diagram of a motor cooling assembly provided by another embodiment of this application, figure 2 It is shown that a plurality of cold air ducts 10 can be gathered at one end of the air inlet to form an air inlet, and cold air can be uniformly introduced through the air inlet, so that each cold air duct 10 delivers cold air.

[0080] Each cold air duct 10 is connected to a cold air source, and multiple cold air ducts 10 form multiple cold air channels. For example, four cold air channels form four cold air channels, or six cold air channels form six cold air channels, or nine. The cold air channel forms and transports nine cold air, and so on, each cold air reaches the motor 2 at a different location, and the multiple cold air cools the motor evenly. Such as figure 1 As shown, the cold air outlets of a plurality of cold air ducts 10 can be evenly distributed around the motor 2. figure 1 Each arrow shown in represents a cold air output from a cold air duct 10, when each cold air duct 10 delivers cold air to the surface of the motor 2, the multiple cold air output from the multiple cold air ducts 10 form a uniform distribution to the motor 2 Cooling, by using multiple channels of uniformly distributed cooling air to form a cooling environment space around the motor 2, the motor 2 running at high speed can be effectively cooled in the cooling environment space, which helps to reduce the temperature of the motor 2 during high speed operation , Thereby ensuring the operating life of the motor 2, and also ensuring the reliability and operating life of the corresponding electrical equipment.

[0081] For cold air, it can effectively reduce the housing temperature of the motor 2 during high-speed operation as a reference. According to the above-mentioned background art, when the drum motor 2 used in most dryers runs at high speed, its winding temperature will reach 90% for a long time. ℃ up and down, the temperature heat is conducted to the motor 2 shell, making the surface temperature of the motor 2 shell above 80 ℃ as an example. For example, it is necessary to reduce the temperature of the motor 2 shell to about 45 degrees, which can deliver wind of about 25 degrees. Cold air, 25 degrees of cold air with evenly distributed cooling in multiple channels forms a cooling environment space around the motor 2. In the cooling environment space, the housing temperature of the motor 2 running at a high speed can be reduced and maintained at about 40 degrees.

[0082] Such as figure 2 As shown, the motor cooling assembly 1 further includes:

[0083] The evaporator 11 is used for evaporating and absorbing heat, so that the air passing through the evaporator 11 becomes cold air, which is transported through the plurality of cold air ducts 10.

[0084] In practical applications, for a dryer equipped with an evaporator 11, when the clothes are dried, humid hot air is formed. When the humid hot air passes through the evaporator 11, when the evaporator 11 evaporates and absorbs heat, it can dehumidify, thereby achieving The moisture in the humid hot air is removed to obtain dry air, and then the dry air is heated, and the clothes are dried again to make the clothes dry. For the dryer, although the evaporator 11 can achieve the purpose of dehumidifying the humid hot air and obtain dry air, the temperature of the dry air is much lower than that of the previous hot air. For heating and drying, the use of the evaporator 11 to dehumidify the humid hot air is its purpose, and lowering the temperature is its side effect. Although it is not expected, it is unavoidable. Therefore, the drying air can only be dehumidified by the heating device. Perform heating again. And through the embodiment scheme of this application, such as figure 2 As shown, the evaporator 11 of the dryer is further utilized, and the temperature of the dry wind formed after passing through the evaporator 11 is greatly reduced, so that it can be used as cold wind to cool the high-speed motor 2 and furthermore In the dryer, while the evaporator 11 is used to dehumidify the humid hot air, the formed reduction of the temperature of the dry air becomes a positive effect.

[0085] image 3 It is a schematic diagram of the structure of the motor cooling assembly provided by another embodiment of this application, such as image 3 As shown, the motor cooling assembly 1 further includes:

[0086] A plurality of air valve devices 12 are arranged in a one-to-one correspondence with the plurality of cold air ducts 10; and

[0087] The controller 13 is used to control each of the air valve devices 12 to adjust the output of the cold air corresponding to the cold air duct 10.

[0088] In practical applications, the air valve device 12 includes an air duct baffle and a driving mechanism. The driving mechanism is controlled by the controller 13 to drive the opening and closing actions of the air duct baffle, and the air volume of the cold air duct 10 is adjusted.

[0089] image 3 It shows that the driving mechanism performs a forward or backward motion, and then drives the air duct baffle to perform a forward or reverse motion to adjust the air volume of the cold air duct 10. In specific applications, the drive mechanism can be a cylinder drive mechanism.

[0090] Figure 4 This is a schematic diagram of the structure of the control part of the motor cooling component provided by an embodiment of this application, such as Figure 4 As shown, the motor cooling assembly 1 further includes:

[0091] A plurality of first temperature detection components 14, each of the first temperature detection components 14 is used to correspondingly detect the case temperature of the corresponding position on the motor 2 reached by the cold air output by the cold air duct 10;

[0092] The controller 13 is specifically used for:

[0093] According to the temperature detected by each of the first temperature detecting components 14, the output of the cold air of each cold air duct 10 is controlled in a one-to-one correspondence.

[0094] Specifically, when the motor 2 runs at a high speed, the temperature of its internal windings will reach around 90° C., and then conduct heat to the motor 2 housing. The structure and shape of the different location areas on the motor 2 housing may be different. At the same time, the distance between the different location areas on the motor 2 housing and the winding will be different. Therefore, the temperature of each location area on the motor 2 housing will also be different. There are differences. Multi-channel cold air cools the housing of the motor 2 at their respective positions according to the same output. There may be a problem of excessive cooling in some local areas, which may cause the surface of the housing in the local area of ​​excessive cooling. Condensation is formed, and there is a risk of damaging the motor 2; there may also be a problem of insufficient cooling in some local areas, and the local area with insufficient cooling will still affect the operating life of the motor 2. However, through the above-mentioned embodiment solutions, the multiple first temperature detection components 14 are used to detect the housing temperature corresponding to the position where the cold air arrives, and then the multiple first temperature detection components 14 send their respective temperature detection results to the controller 13. The controller 13 controls the corresponding air valve device 12 of each cold air duct 10 according to the detection results of each first temperature detection component 14 to adjust the cold air output of each cold air duct 10, and the controller 13 automatically controls each The output of the cold air in the circuit helps to achieve uniform cooling of each position area of ​​the motor 2 housing, thereby avoiding the problem of excessive cooling or insufficient cooling of some areas of the motor 2 housing.

[0095] Further, the control of the cold air output of each cold air duct 10 in a one-to-one correspondence based on the temperature detected by each of the first temperature detection components 14 includes:

[0096] If the temperature detected by a certain first temperature detection component 14 is greater than the first preset temperature and less than or equal to the second preset temperature, the air valve device 12 of the corresponding cold air duct 10 is controlled to maintain The preset initial opening; or,

[0097] If the temperature detected by the certain first temperature detection component 14 is less than or equal to the first preset temperature, the air valve device 12 of the corresponding cold air duct 10 is controlled to close.

[0098] Specifically, the first preset temperature and the second preset temperature are formed as two demarcation point temperatures for control and regulation. In practical applications, the first preset temperature and the second preset temperature can be based on the actual operating conditions of the motor 2 It is concluded that when the temperature detected by a certain first temperature detection component 14 is greater than the first preset temperature and less than or equal to the second preset temperature, it indicates that the detection position corresponding to the certain first temperature detection component 14 is The housing temperature of the motor 2 is within the normal range, and there is no need to adjust the cold air reaching this position, that is, the air valve device 12 of the corresponding cold air duct 10 is controlled to maintain the preset initial opening state. When the temperature detected by a certain first temperature detection component 14 is less than or equal to the first preset temperature, it indicates that the housing of the motor 2 at the detection position has excessively cooled down, and there may be a risk of condensation in the area of ​​the position. Therefore, The air valve device 12 corresponding to the cold air duct 10 is closed, and the cold air output of the cold air duct 10 is stopped.

[0099] For the case where the temperature detected by a certain first temperature detection component 14 is greater than the second preset temperature, it indicates that the temperature of the motor 2 housing at the detection position corresponding to the certain first temperature detection component 14 is insufficiently cooled. In this regard, this application also provides the following embodiment solutions to solve this problem:

[0100] Such as Figure 4 As shown, the motor cooling assembly 1 further includes:

[0101] The second temperature detecting component 15 is used to detect the temperature of the cold air. Specifically, multiple cold air ducts 10 are used to transport cold air in multiple paths, and the temperature of each cold air is the same. In practical applications, the temperature of cold air in only one cold air duct 10 can be detected. When a plurality of cold air ducts 10 converge at one end of the air inlet to form an air inlet, the cold air can be uniformly introduced through the air inlet so that each cold air duct 10 delivers cold air. In practical applications, the cold air at the air inlet can be detected temperature.

[0102] According to the temperature detected by each of the first temperature detection components 14, the control of the cold air output of each cold air duct 10 in a one-to-one correspondence further includes:

[0103] If the temperature detected by the certain first temperature detection component 14 is greater than the second preset temperature, the temperature detected by the certain first temperature detection component 14 and the second temperature The temperature of the cold air detected by the detecting component 15 obtains the corresponding target adjustment opening degree of the air valve device 12 of the cold air duct 10;

[0104] The opening degree of the air valve device 12 of the corresponding cold air duct 10 is adjusted according to the target adjustment opening degree.

[0105] Specifically, when the temperature detected by a certain first temperature detection component 14 is greater than the second preset temperature, it indicates that the temperature of the housing of the motor 2 at the detection position corresponding to the certain first temperature detection component 14 has insufficient cooling. In this case, the specific temperature conditions of the temperature detected by the first temperature detection component 14 and the temperature of the cold air are comprehensively considered to obtain the target adjustment opening of the air valve device 12 of the corresponding cold air duct 10 Degree to adjust the cold air output of the corresponding cold air duct 10 so that the housing temperature of the motor 2 at the detection position corresponding to the first temperature detection component 14 drops to greater than the first preset temperature and less than or equal to the second The preset temperature is the normal temperature range.

[0106] In an embodiment, this application also provides a method for obtaining the target adjustment opening, which is specifically as follows:

[0107] According to the temperature detected by a certain first temperature detecting component 14 and the temperature of the cold air detected by the second temperature detecting component 15, the corresponding air valve device 12 of the cold air duct 10 is obtained Target adjustment opening, including:

[0108] Through the preset opening adjustment formula:

[0109]

[0110] Obtain the corresponding target adjustment opening degree of the air valve device 12 of the cold air duct 10;

[0111] among them,

[0112] γ is the target adjustment opening;

[0113] T i Is the temperature detected by a certain first temperature detection component 14, and i is an integer greater than 1;

[0114] T b Is the first preset temperature;

[0115] T d Is the temperature of the cold air detected by the second temperature detection component 15;

[0116] α is the maximum allowable adjustment of the opening.

[0117] In summary, through the above-mentioned control embodiments of the related controller 13, it is helpful to achieve the effect of uniform temperature control of the motor 2 housing, and avoid the problem of excessive cooling of the surface part of the motor 2 housing causing condensation of the motor 2, or cooling Insufficiency leads to the problem of partial loss of the motor 2, thereby achieving the purpose of improving the life of the motor 2. At the same time, the present invention also widens the working range of the motor 2 so that the motor 2 of the dryer can be applied to a higher drying temperature, can improve the life of the motor 2 and its operating reliability, and thus can improve the entire drying Long-term reliability of the machine.

[0118] Figure 5 This is a schematic flow chart of the motor cooling control method provided by an embodiment of this application, such as Figure 5 As shown, the motor cooling control method includes the following steps:

[0119] Step S501: Obtain the shell temperature of the corresponding position on the motor that the cold air output from each cold air duct reaches, where there are multiple cold air ducts, and each cold air duct can output one path that can reach the motor. For the cold air, the position where the cold air output by each cold air duct reaches the motor is different, and the multiple channels of cold air output by the plurality of cold air ducts uniformly distribute the temperature of the motor.

[0120] Specifically, a corresponding first temperature detection component is arranged at the corresponding position on the motor where the cold air output from each cold air duct reaches, and each first temperature detection component is used to detect the motor at which the cold air output from a cold air duct arrives. The case temperature at the corresponding position on the

[0121] Step S502: According to the housing temperature of the corresponding position on the motor reached by the cold air output from each cold air duct, the cold air output of each cold air duct is controlled one by one.

[0122] Further, the control of the cold air output of each cold air duct in a one-to-one correspondence according to the housing temperature of the corresponding position on the motor reached by the cold air output from each cold air duct includes:

[0123] If the temperature of the casing at the corresponding position on the motor to which the cold air output by a certain cold air duct reaches is greater than the first preset temperature and less than or equal to the second preset temperature, control the certain cold air The damper device of the air duct maintains the preset initial opening; or,

[0124] If the temperature of the casing at the corresponding position on the motor to which the cold air output by the certain cold air duct reaches is less than or equal to the first preset temperature, control the wind of the certain cold air duct The valve device is closed.

[0125] Further, the controlling the output of the cold air of each cold air duct in a one-to-one correspondence according to the housing temperature of the corresponding position on the motor that the cold air output from each cold air duct reaches, further includes:

[0126] If the temperature of the casing at the corresponding position on the motor to which the cold air output by the certain cold air duct reaches is greater than the second preset temperature, acquiring the temperature of the cold air;

[0127] According to the temperature of the casing at the corresponding position on the motor and the temperature of the cold air reached by the cold air output from the cold air duct, the target adjustment of the air valve device of the cold air duct is obtained Opening

[0128] The opening degree of the air valve device of the certain cold air duct is adjusted according to the target adjustment opening degree.

[0129] Specifically, multiple cold air ducts are used to transport the cold air in multiple paths, and the temperature of each cold air is the same. In practical applications, the temperature of cold air in one cold air duct can be detected, and it can be configured in one cold air duct. A second temperature detection component to detect the temperature of the cold air. When multiple cold air ducts converge at one end of the air inlet to form an air inlet, cold air can be introduced through the air inlet so that each cold air duct can convey cold air. In practical applications, multiple cold air ducts can be fed in uniformly. A second temperature detection component is arranged at the air inlet to detect the temperature of the cold air at the air inlet.

[0130] Further, according to the temperature of the housing of the corresponding position on the motor and the temperature of the cold air reached by the cold air output from the cold air duct, the wind of the cold air duct is obtained The target adjustment opening of the valve device includes:

[0131] Through the preset opening adjustment formula:

[0132]

[0133] Obtaining the target adjustment opening degree of the air valve device of the certain cold air duct;

[0134] among them,

[0135] γ is the target adjustment opening;

[0136] T i Is the case temperature of the corresponding position on the motor reached by the cold air output from the certain cold air duct, i is an integer greater than 1;

[0137] T b Is the first preset temperature;

[0138] T d Is the temperature of the cold wind;

[0139] α is the maximum allowable adjustment of the opening.

[0140] Through the above-mentioned motor cooling control method, it is helpful to achieve the effect of uniform temperature control of the motor casing, and avoid the problem of excessive cooling of part of the surface of the motor casing causing motor condensation, or insufficient cooling to cause partial loss of the motor. So as to achieve the purpose of improving the life of the motor. At the same time, the present invention also widens the working range of the motor, so that the motor of the dryer can be applied to a higher drying temperature, can improve the life of the motor and its operating reliability, and thus can improve the long-term operation of the entire dryer. Operational reliability.

[0141] For the related embodiments of the above-mentioned motor cooling control method, it is applied to the above-mentioned related motor cooling assembly. The specific implementation of the above-mentioned motor cooling control method has been explained in detail in the related specific implementation of the above-mentioned related motor cooling assembly, and will not be described here. Explain in detail.

[0142] Image 6 This is a schematic structural diagram of a motor cooling control device provided by an embodiment of this application, such as Image 6 As shown, the motor cooling control device 6 includes:

[0143] The obtaining module 61 is used to obtain the housing temperature of the corresponding position on the motor where the cold air output by each cold air duct reaches, wherein there are multiple cold air ducts, and each cold air duct can output one path to reach For the cold air of the motor, the location where the cold air output by each cold air duct reaches the motor is different, and the multiple channels of cold air output by the plurality of cold air ducts uniformly distribute the temperature of the motor;

[0144] The control module 62 is configured to control the cold air output of each cold air duct in a one-to-one correspondence according to the housing temperature of the corresponding position on the motor reached by the cold air output by each cold air duct.

[0145] Further, the control module 62 is specifically configured to:

[0146] If the temperature of the casing at the corresponding position on the motor to which the cold air output by a certain cold air duct reaches is greater than the first preset temperature and less than or equal to the second preset temperature, control the certain cold air The damper device of the air duct maintains the preset initial opening; or,

[0147] If the temperature of the casing at the corresponding position on the motor to which the cold air output by the certain cold air duct reaches is less than or equal to the first preset temperature, control the wind of the certain cold air duct The valve device is closed.

[0148] Further, the control module 62 is also specifically configured to:

[0149] If the temperature of the casing at the corresponding position on the motor to which the cold air output by the certain cold air duct reaches is greater than the second preset temperature, acquiring the temperature of the cold air;

[0150] According to the temperature of the casing at the corresponding position on the motor and the temperature of the cold air reached by the cold air output from the cold air duct, the target adjustment of the air valve device of the cold air duct is obtained Opening

[0151] The opening degree of the air valve device of the certain cold air duct is adjusted according to the target adjustment opening degree.

[0152] Further, according to the temperature of the housing of the corresponding position on the motor and the temperature of the cold air reached by the cold air output from the cold air duct, the wind of the cold air duct is obtained The target adjustment opening of the valve device includes:

[0153] Through the preset opening adjustment formula:

[0154]

[0155] Obtaining the target adjustment opening degree of the air valve device of the certain cold air duct;

[0156] among them,

[0157] γ is the target adjustment opening;

[0158] T i Is the case temperature of the corresponding position on the motor reached by the cold air output from the certain cold air duct, i is an integer greater than 1;

[0159] T b Is the first preset temperature;

[0160] T d Is the temperature of the cold wind;

[0161] α is the maximum allowable adjustment of the opening.

[0162] Regarding the motor cooling control device in the above-mentioned related embodiments, the specific manners in which each module performs operations have been described in detail in the related embodiments, and will not be elaborated here.

[0163] Figure 7 A schematic diagram of the structure of the electrical equipment provided by an embodiment of this application, such as Figure 7 As shown, the electrical equipment 7 includes:

[0164] Motor 2; and

[0165] The motor cooling assembly 1 according to any one of the above items is used to cool the motor 2.

[0166] Further, the electrical equipment includes a dryer, or an integrated washing and drying machine.

[0167] When the electrical equipment 7 is a dryer, or an integrated washing and drying machine, the motor is used as a drum motor.

[0168] Regarding the electrical equipment 7 in the foregoing embodiment, the specific manner has been described in detail in the foregoing related embodiment, and detailed description will not be given here.

[0169] It can be understood that the same or similar parts in the foregoing embodiments may be referred to each other, and the contents not described in detail in some embodiments may refer to the same or similar contents in other embodiments.

[0170] It should be noted that in the description of this application, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" and "multiple" means at least two.

[0171] Any process or method description described in the flowchart or described in other ways herein can be understood as: a module, segment, or part of code that includes one or more executable instructions for implementing specific logical functions or steps of the process , And the scope of the preferred embodiments of the present application includes additional implementations, which may not be in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. This should It is understood by those skilled in the art to which the embodiments of this application belong.

[0172] It should be understood that each part of this application can be implemented by hardware, software, firmware, or a combination thereof. In the foregoing embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if it is implemented by hardware, as in another embodiment, it can be implemented by any one or a combination of the following technologies known in the art: a logic gate circuit for implementing logic functions on data signals Discrete logic circuits, application-specific integrated circuits with suitable combinational logic gates, programmable gate array (PGA), field programmable gate array (FPGA), etc.

[0173] Those of ordinary skill in the art can understand that all or part of the steps carried in the method of the foregoing embodiments can be implemented by a program instructing relevant hardware to complete. The program can be stored in a computer-readable storage medium. When executed, it includes one of the steps of the method embodiment or a combination thereof.

[0174] In addition, the functional units in the various embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or software functional modules. If the integrated module is implemented in the form of a software function module and sold or used as an independent product, it may also be stored in a computer readable storage medium.

[0175] The aforementioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.

[0176] In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean specific features described in conjunction with the embodiment or example , The structure, materials, or characteristics are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above-mentioned terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner.

[0177] Although the embodiments of the present application have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present application. A person of ordinary skill in the art can comment on the foregoing within the scope of the present application. The embodiment undergoes changes, modifications, substitutions and modifications.