Anti-surge high-speed motor and air outlet equipment

Abstract

The utility model discloses an anti-surge high-speed motor and air outlet equipment, the anti-surge high-speed motor comprises a motor casing, fan blades and a high-speed motor body, the fan blades are connected with the rotating end of the high-speed motor body, and the fan blades and the high-speed motor body are both arranged in the motor casing. The anti-surge high-speed motor further comprises an anti-surge sleeve capable of being in close fit with external functional equipment, the anti-surge sleeve is arranged outside the motor shell in a sleeving mode, at least one flow guide pressure relief groove is formed in the inner wall of the anti-surge sleeve, airflow can be effectively dispersed through the flow guide pressure relief groove when the motor runs at a high speed, and therefore the risk of surge is reduced.

Description

Technical Field

[0001] The utility model relates to electrical equipment, in particular to an anti-surge high-speed motor and air outlet equipment. Background Art

[0002] High-speed motors are power components used in fans, turbo fans, and turbo compressors. Usually, brushless motors are used in combination with drive control algorithms, which allow the motor to reach a rotation speed of more than 50,000 revolutions per minute. At the same time, various types of fan blades are installed on the motor shaft to cope with different working scenarios. With the continuous iteration of technology, the power density of this type of motor and the air volume and pressure performance under the same volume are constantly improving.

[0003] Since the transmission speed of this type of motor is high (generally above 50,000 rpm), from the perspective of safety and vibration reduction, the motor is usually covered with an ordinary silicone sleeve, and then the whole is placed inside the corresponding equipment (flow channel cavity). Figure 1 and Figure 2 As shown, the motor is in the flow channel cavity. When the motor rotates, the air flows from area A to area B. This solution has the following two problems.

[0004] 1. When the high-speed motor provides a larger air volume and air pressure, if the overall flow channel cavity is relatively open and there is not much impedance, the motor can consume more energy to do work to offset the impedance of the air outlet section. The basic principle is as follows: Figure 1 As shown in the figure, the area A in front of the fan blade is the air intake section, and the area B is the exhaust section. When the motor is running, a positive pressure difference will be formed on both sides of the motor, and the air will flow from the inlet to the air outlet after the fan blades do work. The motor can still operate normally if there is a certain amount of impedance in area B or a certain negative pressure in area A.

[0005] However, if the impedance of area B increases sharply, or the pressure of area A decreases sharply, that is, the value of area B pressure - area A pressure gradually increases and crosses a certain threshold, such as Figure 2 As shown. At this time, the air in area B of the high-speed motor fan will no longer be discharged from the air outlet, but will flow to the front of the fan blades (towards area A). At the same time, as the fan blades continue to rotate, the corresponding air will normally move from area A to area B. The two air streams will meet in the motor and fan blade areas, forming a strong mutual interference, which will cause obvious surge phenomenon, such as Figure 2 The dotted line will cause surge due to the conflict between the air backflow behind the fan blades and the normal working air of the fan blades. In addition, the fan's air volume and air pressure will be randomly reduced, the air outlet efficiency will be reduced, and the noise and vibration problems will be aggravated.

[0006] 2. In addition, due to practical reasons of production technology and assembly precision, there is a certain gap between the ordinary silicone sleeve and the external main frame structure. When the above-mentioned problem 1 occurs, the reflux gas can partially pass through this tiny channel and return to the front end of the fan blade (area A), and then continue to flow from area A to area B. Because of the existence of this gap, the maximum pressure difference between area B and area A can be reduced to a certain extent, which can delay the occurrence of surge. However, this method has another major problem, that is, when the frame area of ​​the flow channel cavity is connected to another cavity (for example, forming a T-shaped pipe structure), the air will flow to the other cavity space, thereby forming an air leakage phenomenon in the popular sense, and the air outlet efficiency will be greatly reduced. In view of this, the utility model provides an anti-surge high-speed motor. Utility Model Content

[0007] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide an anti-surge high-speed motor, which can solve the surge problem generated when the high-speed motor is used in equipment.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0009] A surge-proof high-speed motor comprises a motor housing, fan blades and a high-speed motor body, wherein the fan blades are connected to the rotating end of the high-speed motor body, and the fan blades and the high-speed motor body are both arranged in the motor housing. The motor housing also comprises an anti-surge sleeve that can be tightly matched with an external functional device, and the anti-surge sleeve is arranged outside the motor housing. The inner wall of the anti-surge sleeve is provided with at least one diversion and pressure relief groove.

[0010] In the anti-surge high-speed motor, the flow guide and pressure relief groove penetrates both ends of the inner wall of the anti-surge sleeve along the axial direction of the anti-surge sleeve.

[0011] In the anti-surge high-speed motor, the diversion and pressure relief groove is trapezoidal, rectangular, arc-shaped or triangular.

[0012] In the anti-surge high-speed motor, the number of the diversion and pressure relief grooves is 2 to 12.

[0013] In the anti-surge high-speed motor, support ribs are arranged on the inner wall of the anti-surge sleeve and between the diversion and pressure relief grooves.

[0014] In the anti-surge high-speed motor, the support ribs are integrally formed with the anti-surge sleeve, or are in close contact with the inner wall of the anti-surge sleeve.

[0015] In the anti-surge high-speed motor, the support ribs and the diversion and pressure relief grooves are evenly distributed on the inner wall of the anti-surge sleeve.

[0016] In the anti-surge high-speed motor, the support ribs are provided with a plurality of guiding flow and pressure relief slots.

[0017] In the anti-surge high-speed motor, the anti-surge sleeve is an elastic sleeve.

[0018] An air outlet device comprises a device housing, in which an anti-surge high-speed motor as described in any one of the above items is arranged, and the device housing is tightly matched with an anti-surge sleeve of the anti-surge high-speed motor.

[0019] Compared with the prior art, the anti-surge high-speed motor provided by the utility model includes a motor housing, fan blades, a high-speed motor body and an anti-surge sleeve that can be tightly matched with external functional equipment. The anti-surge sleeve is arranged outside the motor housing, and the inner wall of the anti-surge sleeve is provided with at least one diversion and pressure relief groove. The diversion and pressure relief groove helps to effectively disperse the airflow when the motor runs at high speed, greatly reducing the surge problem when the motor is working, which helps to maintain the stability of the high-speed motor operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the air flow direction of the fan blades of an existing high-speed motor when it is running.

[0021] Figure 2 The schematic diagram is a diagram showing surge phenomenon generated by an existing high-speed motor during operation.

[0022] Figure 3 The three-dimensional structural schematic diagram of the anti-surge high-speed motor provided by the utility model.

[0023] Figure 4 The utility model is provided with a side view of the anti-surge high-speed motor at one angle.

[0024] Figure 5 A schematic diagram of the three-dimensional structure of the anti-surge sleeve in the anti-surge high-speed motor provided by the utility model

[0025] Figure 6 The present invention is a schematic side structural view at one angle of the anti-surge sleeve in the anti-surge high-speed motor provided by the present invention.

[0026] Figure 7 This is a structural schematic diagram of the direction of airflow inside the anti-surge high-speed motor provided by the utility model when the motor is running.

[0027] Figure 8 The utility model provides a schematic structural diagram of the flow direction of the airflow inside the anti-surge high-speed motor when the air outlet resistance increases.

[0028] Description of Reference Numerals

[0029] Motor housing 1, fan blades 2, high-speed motor body 3, anti-surge sleeve 4, flow guide pressure relief groove 41, support ribs 42, hook 43, flow guide pressure relief groove hole 44, anti-surge high-speed motor 100, equipment housing 200 DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0031] The anti-surge high-speed motor provided by the utility model is mainly used in certain industrial equipment, high-performance fans or air compressors and other equipment. By arranging an anti-surge sleeve outside the motor casing and utilizing the guide and pressure relief grooves on the anti-surge sleeve, the airflow can be effectively dispersed to reduce the surge phenomenon that may be generated by the high-speed motor when running at high speed, thereby improving the stability and service life of the motor.

[0032] See also Figure 3 , Figure 4 , Figure 5 and Figure 6 The anti-surge high-speed motor 100 provided by the utility model includes a motor housing 1, fan blades 2 and a high-speed motor body 3. The fan blades 2 are connected to the rotating end (such as the motor output shaft) of the high-speed motor body 3. The fan blades 2 and the high-speed motor body 3 are both arranged in the motor housing 1. The rotation speed of the high-speed motor body 3 is more than 50,000 rpm. The fan blades rotate with the rotation of the high-speed motor, thereby allowing air to flow in front of and behind the fan blades.

[0033] The anti-surge high-speed motor 100 also includes an anti-surge sleeve 4 that can be tightly matched with external functional equipment. The anti-surge sleeve 4 is sleeved on the outside of the motor housing 1. The inner wall of the anti-surge sleeve 4 is provided with at least one guide and pressure relief groove 41. The guide and pressure relief groove 41 helps to effectively disperse the airflow when the motor runs at high speed, thereby solving the surge problem.

[0034] The guide and pressure relief grooves 41 penetrate both ends of the inner wall of the anti-surge sleeve 4 along the axial direction of the anti-surge sleeve 4 to form a series of penetrating channels, which helps to reduce the turbulence and pressure fluctuation of the air flow inside the motor, thereby reducing the risk of surge and solving the problem of surge during motor operation.

[0035] Among them, the diversion and pressure relief groove 41 is trapezoidal, rectangular, arc-shaped or triangular, and the specific shape can be selected according to needs. For example, the trapezoidal and rectangular shapes can provide better structural strength, which helps to support the anti-surge sleeve 4 and resist external pressure. The arc or triangle shape can make the appearance of the anti-surge sleeve 4 more beautiful. The diversion and pressure relief grooves 41 of different shapes can be selected according to the specific application and design requirements of the motor to improve the adaptability and flexibility of the motor.

[0036] There are 2 to 12 guide and pressure relief grooves 41. Multiple guide and pressure relief grooves 41 help to form multiple pressure release points inside the motor, balance the pressure, and have a better anti-surge effect. They can also improve the heat dissipation efficiency. The specific number of the guide and pressure relief grooves 41 can be selected according to the size of the anti-surge sleeve 4 and specific needs.

[0037] In this embodiment, support ribs 42 are provided on the inner wall of the anti-surge sleeve 4 and between the guide and pressure relief grooves 41. The support ribs 42 can enhance the structural strength of the anti-surge sleeve 4, prevent the inner wall of the anti-surge sleeve 4 from deformation, maintain the shape and function of the guide and pressure relief grooves 41, and provide additional support points for the motor, so that it can withstand the vibration and pressure generated when the motor is running, and reduce the noise and wear caused by vibration.

[0038] Furthermore, the support ribs 42 can also increase the depth of the guide and pressure relief grooves 41, which helps to improve the airflow guiding effect of the guide and pressure relief grooves 41 and reduce the turbulence and eddy current of the airflow inside the motor. Specifically, the two ends of the support ribs 42 also have hooks 43 that tightly clasp the two ends of the motor housing 1, which facilitates the fixing of the anti-surge sleeve 4 on the motor housing 1 and ensures its close fit with the motor housing 1.

[0039] The support ribs 42 are integrally formed with the anti-surge sleeve 4 to simplify the manufacturing process, reduce assembly steps, ensure the consistency of the anti-surge sleeve, reduce production costs, and improve overall durability and reliability. Alternatively, the support ribs 42 are in close contact with the inner wall of the anti-surge sleeve 4 to facilitate inspection and replacement of components. Both of these methods can achieve the diversion and pressure relief functions of the diversion and pressure relief groove 41, and can be selected according to the use requirements, and are not limited here.

[0040] In this embodiment, the support ribs 42 and the guide and pressure relief grooves 41 are evenly distributed on the inner wall of the anti-surge sleeve 4, which can guide and control the airflow inside the motor in a more balanced manner, reduce the unevenness and turbulence of the airflow, and reduce the risk of surge. The evenly distributed support ribs 42 can provide a more uniform support force, enhance the structural stability of the anti-surge sleeve 4, and reduce deformation or damage caused by local stress concentration. Moreover, the evenly distributed support ribs 42 and the guide and pressure relief grooves 41 make the anti-surge sleeve 4 more visually coordinated and beautiful, enhancing the overall appearance of the product.

[0041] The support ribs 42 are provided with a plurality of guiding airflow and pressure relief slots 44, which can provide more airflow channels, help to more finely guide and control the airflow inside the motor, and further improve the anti-surge performance.

[0042] The anti-surge sleeve 4 is an elastic sleeve, such as a rubber sleeve, a silicone sleeve, etc., which can be easily put on the motor housing 1, does not require a complicated installation process, is easy to install and remove, and can also absorb and reduce vibration, which helps to reduce the noise generated when the motor is running. Moreover, the elastic anti-surge sleeve 4 can be tightly matched with the equipment or have an airtight connection, so that the air can only flow from the diversion and pressure relief groove 41, solving the problem of air leakage.

[0043] To make the structure of this embodiment clearer, the following Figure 7 and Figure 8 To elaborate:

[0044] In normal circumstances (such as Figure 7 As shown in FIG. 1 , the motor including the outer jacket is connected to the wall of the fluid chamber by a tight fit, and can also be connected by glue, screws, etc., which can be regarded as a rigid connection in reality. During normal operation, air flows from the area A in front of the fan blade 2 to the area B behind the fan blade 2.

[0045] When the impedance of region B increases sharply (such as Figure 8 As shown, common manifestations in use are that the air outlet of the fan is blocked, or the air temperature rises sharply, the air expands instantly, etc.), or when the pressure in area A decreases sharply (in reality, it is often manifested as the air inlet is suddenly blocked), the air in area B can flow to area A with the help of the guide and pressure relief groove running through the silicone sleeve of the motor, so that the maximum pressure difference between area B and area A can be greatly reduced, thereby avoiding the backflow phenomenon caused by the air flowing directly to the fan blade 2, and also avoiding the surge phenomenon.

[0046] Based on the anti-surge high-speed motor 100 described above, the utility model also provides a corresponding air outlet device, and the air outlet device includes but is not limited to: a hair dryer, a hand dryer, a fan, a turbo fan, a turbo compressor, etc., which includes a device housing 200, in which the anti-surge high-speed motor 100 is arranged, and the device housing 200 is tightly matched with the anti-surge sleeve 4 of the anti-surge high-speed motor 100. When the air pressure at the air outlet or air inlet of the equipment is abnormal, the air can only flow from the guide pressure relief groove 41, so that the air pressure on both sides of the fan blades is balanced, the fan blades are prevented from surging, and the air leakage problem is also solved.

[0047] In summary, the anti-surge high-speed motor provided by the utility model includes a motor housing, a fan blade and a high-speed motor body, wherein the fan blade is connected to the rotating end of the high-speed motor body, and the fan blade and the high-speed motor body are both arranged in the motor housing. The anti-surge high-speed motor also includes an anti-surge sleeve that can be tightly matched with an external functional device, the anti-surge sleeve is arranged outside the motor housing, and the inner wall of the anti-surge sleeve is provided with at least one diversion and pressure relief groove, which helps to effectively disperse the airflow when the motor is running at high speed, thereby reducing the risk of surge.

[0048] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and utility model concept of the utility model, and all these changes or substitutions should fall within the protection scope of the claims attached to the utility model.

Claims

1. An anti-surge high-speed motor, comprising a motor housing, a fan blade and a high-speed motor body, wherein the fan blade is connected to the rotating end of the high-speed motor body, and the fan blade and the high-speed motor body are both arranged in the motor housing, characterized in that: It also includes an anti-surge sleeve that can be tightly matched with external functional equipment. The anti-surge sleeve is arranged outside the motor housing, and the inner wall of the anti-surge sleeve is provided with at least one diversion and pressure relief groove.

2. The anti-surge high-speed motor according to claim 1, characterized in that: The diversion and pressure relief groove passes through both ends of the inner wall of the anti-surge sleeve along the axial direction of the anti-surge sleeve.

3. The anti-surge high-speed motor according to claim 1, characterized in that: The diversion and pressure relief groove is in the shape of a trapezoid, a rectangle, an arc or a triangle.

4. The anti-surge high-speed motor according to any one of claims 1 to 3, characterized in that: The number of the diversion and pressure relief grooves is 2 to 12.

5. The anti-surge high-speed motor according to claim 4, characterized in that: Support ribs are arranged on the inner wall of the anti-surge sleeve and between the diversion and pressure relief grooves.

6. The anti-surge high-speed motor according to claim 5, characterized in that: The support ribs are integrally formed with the anti-surge sleeve, or are in close contact with the inner wall of the anti-surge sleeve.

7. The anti-surge high-speed motor according to claim 5, characterized in that: The supporting ribs and the diversion and pressure relief grooves are evenly distributed on the inner wall of the anti-surge sleeve.

8. The anti-surge high-speed motor according to claim 5, characterized in that: The support ribs are provided with a plurality of guiding flow and pressure relief slots.

9. The anti-surge high-speed motor according to claim 1, characterized in that: The anti-surge sleeve is an elastic outer sleeve.

10. An air outlet device, comprising a device housing, characterized in that: The device housing is provided with the anti-surge high-speed motor as described in any one of claims 1 to 9, and the device housing is tightly matched with the anti-surge sleeve of the anti-surge high-speed motor.

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