Fan, air conditioner and preparation method of fan and air conditioner
By arranging an elastic deformation structure between the stator assembly and the rotor assembly of the air-conditioning fan, the torque coefficient of the motor changes with the deformation to meet the constant air volume characteristic curve, solving the problem of insufficient air output of the air-conditioning fan under high static pressure, and realizing the fan Passive adaptive adjustment of constant air volume reduces costs.
Patent Information
- Application Number
- CN202411281897.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-01-24
AI Technical Summary
The existing air conditioning fans lack air volume and air output capacity under high static pressure, resulting in poor user experience. At the same time, the intelligent constant air volume control method requires cost-effective sensors and complex computing devices.
Design a fan that sets the elastic deformation structure between the stator component and the rotor component, so that the torque coefficient of the motor is with the axial deformation of the elastic deformation structure to meet the fan characteristic curve of the constant air volume Hengfeng volume.
The constant air volume adjustment is achieved through the mechanical structure of the fan itself, which avoids the need to increase the needs of sensors and complex computing devices, and reduce the cost of manufacturing, use and maintenance.
Smart Images
Figure CN119353242A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of fans, and specifically proposes a fan, an air conditioner and a preparation method thereof. Background Art
[0002] This section is used to introduce content related to the present invention, which is not necessarily disclosed in advance.
[0003] In the related art, most fans on air conditioners are non-constant air volume fans, which are usually adjusted using a multi-speed mode. However, as the static pressure of the air outlet increases, the air volume generally decreases, resulting in insufficient air volume and air outlet capacity under high static pressure conditions, resulting in a poor user experience.
[0004] In addition, some air-conditioning fans use an intelligent constant air volume control method, which specifically uses experimental simulation calculations and actual tests to obtain multiple sets of parameters such as motor speed, air volume, motor current, motor power, etc. under different air outlet static pressure conditions. All parameters are stored in the program in a certain relationship, and the speed and power parameters of the fan are compared during actual use to intelligently determine the air outlet static pressure of the fan, thereby achieving constant air volume control of the air conditioner.
[0005] However, the above fan system needs to add pressure sensors, flow meters and other sensing devices, which are relatively expensive. Moreover, the storage of data and complex collaborative calculations make this type of constant air volume control method require a high level of chip computing power from the controller, further increasing the cost of this type of fan system. Summary of the invention
[0006] The purpose of the present invention is to solve at least part of the technical problems mentioned above, and this purpose is achieved through the following technical solutions:
[0007] In the first aspect, the present invention proposes a fan, which includes fan blades and a motor, the motor including a stator assembly, a rotor assembly and an elastic deformation structure, the elastic deformation structure is arranged between the axial directions of the stator assembly and the rotor assembly; the fan blades are arranged on the rotor assembly; the rotor assembly and the stator assembly can move axially relative to each other and change the torque coefficient of the motor under the elastic force of the elastic deformation structure and the pressure of axial wind, and the torque coefficient of the motor changes with the axial deformation amount of the elastic deformation structure to meet the fan characteristic curve of constant air volume.
[0008] In some embodiments, the stator assembly includes a stator support structure, a stator core winding unit and a bearing structure, the stator core winding unit is connected to the stator support structure, and the bearing structure is arranged in the middle of the stator core winding unit; the rotor assembly includes a rotor casing, a permanent magnet and a rotating shaft, the permanent magnet is connected to the rotor casing, and the rotating shaft is arranged in the middle of the rotor casing; the rotating shaft passes through the bearing structure, and the rotating shaft can rotate circumferentially and move axially relative to the bearing structure.
[0009] In some embodiments, the permanent magnets are arranged radially opposite to the stator core winding unit.
[0010] In some embodiments, the permanent magnet and the stator core winding unit are axially arranged opposite to each other.
[0011] In some embodiments, the bearing structure includes a first bearing and a second bearing, the first bearing and the second bearing are spaced apart in the axial direction, and the first bearing is close to the rotor housing, and the second bearing is far from the rotor housing.
[0012] In some embodiments, the elastic deformation structure is a first spring, and the first spring is sleeved on the rotating shaft and located between the rotor housing and the first bearing.
[0013] In some embodiments, a limiting rod is radially penetrated at one end of the rotating shaft away from the rotor housing; the fan is further provided with a second spring, and the second spring is sleeved between the second bearing and the limiting rod.
[0014] In some embodiments, the elastic constant of the first spring is less than or equal to the elastic constant of the second spring.
[0015] In a second aspect, the present invention provides an air conditioner, comprising the fan of the first aspect.
[0016] In a third aspect, the present invention provides a method for preparing a fan, which is used to prepare the fan of the first aspect, comprising the following steps:
[0017] Simulate or measure the speed S of the rotor assembly, the power W of the fan, and the axial wind pressure F under the same air volume Q and different air outlet static pressure P;
[0018] The torque T of the rotor assembly is calculated based on S and W, where T = W / S;
[0019] The fan current I is a preset fixed value, and the torque coefficient Kt is calculated based on T and I, where Kt = T / I;
[0020] The first fan characteristic curve that satisfies the constant air volume and Kt varies with P is obtained by fitting;
[0021] Since F is proportional to P, the second fan characteristic curve that satisfies the constant air volume and Kt changes with F is obtained;
[0022] An elastic deformation structure is arranged between the rotor assembly and the stator assembly in the axial direction. The elastic coefficient of the elastic deformation structure is k. Then, the axial deformation amount of the elastic deformation structure is calculated to be △L, where △L=F / k;
[0023] The third fan characteristic curve that satisfies the constant air volume and changes with △L is obtained by fitting;
[0024] The fan is designed according to the third fan characteristic curve to meet the requirement of constant air volume output.
[0025] The technical solution proposed by the present invention has at least the following technical effects:
[0026] In the present invention, an elastic deformation structure is added between the rotor assembly and the stator assembly. The elastic deformation structure is designed and selected through calculation, so that the torque coefficient of the motor changes with the axial deformation of the elastic deformation structure to meet the fan characteristic curve of constant air volume, thereby relying only on the fan's own mechanical structure to achieve passive adaptive adjustment of the constant air volume, without the need to add additional sensors and complex computing devices, saving manufacturing, use and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to better combine the contents shown in the drawings of the specification with the contents described in the specific implementation methods, the drawings of the specification are briefly introduced below. It can be understood that the drawings of the specification mentioned below only schematically show some embodiments of the relevant technical solutions and the technical solutions of the present invention. Without paying creative labor, those skilled in the art can also make drawings showing other embodiments.
[0028] Specifically, the annotations of the drawings in the specification are as follows:
[0029] Figure 1 It is a schematic diagram of the structure of the motor described in some embodiments of the present invention;
[0030] Figure 2 It is a structural schematic diagram of a motor according to some other embodiments of the present invention;
[0031] Figure 3 It is a schematic diagram of the structure of the fan described in some embodiments of the present invention.
[0032] Specifically, the annotations of the accompanying drawings in the specification are as follows:
[0033] 100. Fan; A. Fan blades; B. Motor; 110. Stator assembly; 111. Stator support structure; 112. Stator core winding unit; 113. Bearing structure; 1131. First bearing; 1132. Second bearing; 120. Rotor assembly; 121. Rotor housing; 122. Permanent magnet; 123. Rotating shaft; 124. Limit rod; 130. Elastic deformation structure; 131. First spring; 132. Second spring; X, axial; Y, radial. DETAILED DESCRIPTION
[0034] In order to make the contents of the embodiments of the present invention clearer, the following description will be made in conjunction with the accompanying drawings. It can be understood that the contents mentioned below are only some embodiments of the present invention, and all embodiments are listed in detail. Therefore, without paying creative work, other embodiments obtained based on the following embodiments fall within the protection scope of the present invention.
[0035] It should be understood that the terms used herein are only for the purpose of describing specific embodiments and are not intended to strictly limit the technical solutions unless the context clearly indicates otherwise. For example, the use of "a", "an" and "the" to modify a feature does not exclude that the feature may also be plural in other embodiments.
[0036] It should be understood that the terms "include", "comprises", and "have" are open ended, indicating the presence of the stated features, but not excluding the possibility that the embodiment may have other features. Similarly, the use of the terms first, second, etc. in the text to describe multiple features only means to distinguish one feature from another, and unless the context clearly indicates otherwise, such terms do not imply an order or sequence.
[0037] It should be understood that, unless the context clearly indicates otherwise, the terms "dispose", "connect", and "install" should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or integrally connected; they can be directly connected or indirectly connected through a medium. For those skilled in the art, the specific meanings of the above terms in the text can be understood according to the specific circumstances.
[0038] In addition, for the convenience of description, the text will use terms of spatial relative relationships to illustrate the position of one feature relative to another feature, for example, "inside", "outside", "end", "side", "top", "middle", "bottom", "high", "low", "axial", "circumferential", "radial", "horizontal", "vertical", "first direction", "second direction", etc. It can be understood that the spatial relative relationship between two features should include other specific situations in addition to those shown in the drawings of the specification.
[0039] The embodiments of the present invention are described below in conjunction with the accompanying drawings.
[0040] First, refer to Figure 1 , Figure 2 and Figure 3The present invention proposes a fan 100, which includes a fan blade A and a motor B. The motor B includes a stator assembly 110, a rotor assembly 120 and an elastic deformation structure 130. The elastic deformation structure 130 is arranged between the axial direction X of the stator assembly 110 and the rotor assembly 120; the fan blade A is arranged on the rotor assembly 120; the rotor assembly 120 and the stator assembly 110 can move relative to the axial direction X under the elastic force of the elastic deformation structure 130 and the pressure of the axial wind and change the torque coefficient of the motor B. The torque coefficient of the motor B changes with the axial deformation amount of the elastic deformation structure 130 to meet the fan characteristic curve of constant air volume.
[0041] In some embodiments, the stator assembly 110 includes a stator support structure 111, a stator core winding unit 112 and a bearing structure 113, the stator core winding unit 112 is connected to the stator support structure 111, and the bearing structure 113 is arranged in the middle of the stator core winding unit 112; the rotor assembly 120 includes a rotor housing 121, a permanent magnet 122 and a rotating shaft 123, the permanent magnet 122 is connected to the rotor housing 121, and the rotating shaft 123 is arranged in the middle of the rotor housing 121; the rotating shaft 123 passes through the bearing structure 113, and the rotating shaft 123 can rotate circumferentially relative to the bearing structure 113 and can move axially X.
[0042] It should be noted that the blades A of the fan 100 are arranged on the outer periphery of the rotor housing 121. When the fan 100 is in operation, static pressure of the wind and pressure of the axial wind are generated.
[0043] In particular, the rotor assembly 120 may move in the axial direction X, or the stator assembly 110 may move in the axial direction X. In this embodiment, the rotor assembly 120 preferably moves in the axial direction X.
[0044] In addition, in some embodiments, blades A can be arranged at a circumferential position of the rotor assembly 120, and blades A can also be arranged at a position on the axial direction X of the rotor assembly 120. It can be understood that the present invention does not strictly limit the arrangement of blades A. As long as the arrangement of blades A does not conflict with other features of the present invention, it falls within the scope of protection of the present invention.
[0045] In some embodiments, the permanent magnet 122 and the stator core winding unit 112 are arranged opposite to each other along the radial direction Y. Figure 1, the permanent magnet 122 and the stator core winding unit 112 are only partially opposite to each other along the radial direction Y. When the air outlet is blocked or the gear is adjusted, the air volume decreases and the static pressure of the air outlet increases, which increases the pressure of the axial wind, thereby bringing the rotor assembly 120 closer to the stator assembly 110, that is, the relative part of the permanent magnet 122 and the stator core winding unit 112 becomes larger, and the output power of the rotor assembly 120 increases, thereby increasing the air volume; when the static pressure of the air outlet decreases, the rotor assembly 120 will move away from the stator assembly 110 under the elastic force of the elastic deformation structure 130, thereby reducing the relative part of the permanent magnet 122 and the stator core winding unit 112 and restoring the original balance.
[0046] In some embodiments, the permanent magnet 122 and the stator core winding unit 112 are arranged opposite to each other along the axial direction X. Figure 2 The permanent magnet 122 is axially opposite to the stator core winding unit 112 in the X direction. When the air outlet is blocked or the gear is adjusted, the air volume decreases and the static pressure of the air increases, which increases the pressure of the axial wind, thereby bringing the rotor assembly 120 closer to the stator assembly 110, that is, the permanent magnet 122 is closer to the stator core winding unit 112, and the output power of the rotor assembly 120 increases, thereby increasing the air volume; when the static pressure of the air decreases, the process is reversed.
[0047] In summary, in the present invention, an elastic deformation structure 130 is added between the rotor assembly 120 and the stator assembly 110. The elastic deformation structure 130 is designed and selected through calculation, so that the torque coefficient of the motor B changes with the axial deformation of the elastic deformation structure 130 to meet the characteristic curve of the fan 100 with constant air volume, thereby realizing passive adaptive adjustment of the constant air volume of the fan 100 by relying solely on the mechanical structure of the fan 100 itself, without the need to add additional sensors and complex computing devices, thereby saving manufacturing, use and maintenance costs.
[0048] In some embodiments, the bearing structure 113 includes a first bearing 1131 and a second bearing 1132, the first bearing 1131 and the second bearing 1132 are spaced apart along the axial direction X, and the first bearing 1131 is close to the rotor housing 121, and the second bearing 1132 is far away from the rotor housing 121. In some embodiments, the elastic deformation structure 130 is a first spring 131, the first spring 131 is sleeved on the rotating shaft 123 and is located between the rotor housing 121 and the first bearing 1131. In some embodiments, a limiting rod 124 is penetrated along the radial direction Y at one end of the rotating shaft 123 away from the rotor housing 121; the fan 100 is further provided with a second spring 132, and the second spring 132 is sleeved between the second bearing 1132 and the limiting rod 124. In some embodiments, the elastic coefficient of the first spring 131 is less than or equal to the elastic coefficient of the second spring 132.
[0049] In the above embodiment, the arrangement of the two bearings can increase the support for the rotating shaft 123, making the rotating shaft 123 more stable when rotating, and can also provide a limit for the two springs in the axial direction X. In addition, the second spring 132 is arranged to prevent the end of the rotating shaft 123 away from the rotor assembly 120 from hitting the second bearing 1132 when the client suddenly shuts down and the rotor assembly 120 is called back, thereby affecting the service life of the second bearing 1132. Therefore, the second spring 132 can play a buffering role; and the elastic coefficient of the first spring 131 is less than or equal to the elastic coefficient of the second spring 132, and the deformation of the second spring 132 is small, which reduces the space occupied.
[0050] In a second aspect, the present invention provides an air conditioner, which includes the fan 100 of the first aspect.
[0051] In the above embodiment, the air conditioner of the second aspect includes the fan 100 of the first aspect. Therefore, the air conditioner of the second aspect has at least all the technical effects of the fan 100 of the first aspect, and its specific technical effects will not be repeated here.
[0052] It can be understood that the embodiments of the present invention only illustrate the structure of the air conditioner of the second aspect related to the improvement points of the present application, but it does not mean that the air conditioner of the second aspect does not have other structures. For example, it can also include a condenser, and / or an evaporator, etc. Other structures will not be described one by one here.
[0053] In a third aspect, the present invention provides a method for preparing a fan, which is used to prepare the fan 100 of the first aspect, and comprises the following steps:
[0054] The rotation speed S of the rotor assembly 120, the power W of the fan 100, and the pressure F of the axial wind are simulated or measured under the same air volume Q and different air outlet static pressures P;
[0055] The torque T of the rotor assembly 120 is calculated based on S and W, where T=W / S;
[0056] The current I of the fan 100 is a preset fixed value, and the torque coefficient Kt is calculated based on T and I, where Kt = T / I;
[0057] The first fan characteristic curve that satisfies the constant air volume and Kt varies with P is obtained by fitting;
[0058] Since F is proportional to P, the second fan characteristic curve that satisfies the constant air volume and Kt changes with F is obtained;
[0059] An elastic deformation structure 130 is provided between the rotor assembly 120 and the stator assembly 110 in the axial direction X. The elastic coefficient of the elastic deformation structure 130 is k. Then, the axial deformation amount of the elastic deformation structure 130 is calculated to be ΔL, where ΔL=F / k.
[0060] The third fan characteristic curve that satisfies the constant air volume and changes with △L is obtained by fitting;
[0061] The fan 100 is designed according to the third fan characteristic curve to meet the requirement of constant air volume output.
[0062] In particular, the term "and / or" in the present invention should be understood as follows:
[0063] In the first case, the term "and / or" located between a first subject and a second subject includes any one of the following meanings: (1) only the first subject; (2) only the second subject; and (3) the first subject and the second subject.
[0064] In the second case, the term "and / or" between the last two subjects among three or more subjects means including at least any one of the multiple subjects. For example, "the first subject, the second subject and / or the third subject" has the same meaning as "the first subject and / or the second subject and / or the third subject", specifically including the following combinations: (1) only the first subject; (2) only the second subject; (3) only the third subject; (4) the first subject and the second subject but not the third subject; (5) the first subject and the third subject but not the second subject; (6) the second subject and the third subject but not the first subject; and (7) the first subject, the second subject and the third subject.
[0065] In addition, although the above content describes the embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art can also make various modifications and variations without departing from the concept of the present invention, and such modifications and variations all fall within the scope of protection of the present invention.
Claims
1. A fan, characterized in that: The invention comprises a fan blade (A) and a motor (B), wherein the motor (B) comprises a stator assembly (110), a rotor assembly (120) and an elastic deformation structure (130), wherein the elastic deformation structure (130) is arranged between the stator assembly (110) and the rotor assembly (120) in an axial direction (X), and the fan blade (A) is arranged on the rotor assembly (120); The rotor assembly (120) and the stator assembly (110) can move relative to each other in the axial direction (X) under the elastic force of the elastic deformation structure (130) and the pressure of the axial wind and change the torque coefficient of the motor (B). The torque coefficient of the motor (B) changes with the axial (X) deformation amount of the elastic deformation structure (130) to meet the fan characteristic curve of constant air volume.
2. The fan according to claim 1, characterized in that: The stator assembly (110) comprises a stator support structure (111), a stator core winding unit (112) and a bearing structure (113); the stator core winding unit (112) is connected to the stator support structure (111), and the bearing structure (113) is arranged in the middle of the stator core winding unit (112); The rotor assembly (120) comprises a rotor casing (121), a permanent magnet (122) and a rotating shaft (123), wherein the permanent magnet (122) is connected to the rotor casing (121), and the rotating shaft (123) is arranged in the middle of the rotor casing (121); The rotating shaft (123) is disposed through the bearing structure (113), and the rotating shaft (123) can rotate in the circumferential direction and move in the axial direction (X) relative to the bearing structure (113).
3. The fan according to claim 2, characterized in that: The permanent magnet (122) and the stator core winding unit (112) are arranged opposite to each other in a radial direction (Y).
4. The fan according to claim 2, characterized in that: The permanent magnet (122) and the stator core winding unit (112) are arranged opposite to each other along the axial direction (X).
5. The fan according to claim 2, characterized in that: The bearing structure (113) comprises a first bearing (1131) and a second bearing (1132), wherein the first bearing (1131) and the second bearing (1132) are spaced apart in an axial direction (X), and the first bearing (1131) is close to the rotor housing (121), and the second bearing (1132) is far from the rotor housing (121).
6. The fan according to claim 5, characterized in that: The elastic deformation structure (130) is a first spring (131), and the first spring (131) is sleeved on the rotating shaft (123) and located between the rotor housing (121) and the first bearing (1131).
7. The fan according to claim 6, characterized in that: A limiting rod (124) is provided along a radial direction (Y) at one end of the rotating shaft (123) away from the rotor housing (121); The fan (100) is further provided with a second spring (132), and the second spring (132) is sleeved between the second bearing (1132) and the limiting rod (124).
8. The fan according to claim 7, characterized in that: The elastic coefficient of the first spring (131) is less than or equal to the elastic coefficient of the second spring (132).
9. An air conditioner, characterized in that: The wind turbine (100) comprises any one of claims 1 to 8.
10. A method for preparing a fan, characterized in that: A method for preparing the fan (100) according to any one of claims 1 to 8, comprising the following steps: Simulating or measuring the rotation speed S of the rotor assembly (120), the power W of the fan (100), and the axial wind pressure F under the same air volume Q and different air outlet static pressures P; The torque T of the rotor assembly (120) is calculated based on S and W, wherein T=W / S; The current I of the fan (100) is a preset fixed value, and the torque coefficient Kt is calculated based on T and I, where Kt=T / I; The first fan characteristic curve that satisfies the constant air volume and Kt varies with P is obtained by fitting; Since F is proportional to P, the second fan characteristic curve that satisfies the constant air volume and Kt changes with F is obtained; An elastic deformation structure (130) is arranged between the rotor assembly (120) and the stator assembly (110) in the axial direction (X), the elastic coefficient of the elastic deformation structure (130) is k, and the axial (X) deformation amount of the elastic deformation structure (130) is calculated to be △L, wherein △L=F / k; The third fan characteristic curve that satisfies the constant air volume and changes with △L is obtained by fitting; The fan (100) is designed according to the third fan characteristic curve to meet the requirement of constant air volume output.