Blowing device
By increasing the motor speed and fan design, combined with a detachable nozzle, the problem of weak blowing and suction effect of the electric blower has been solved, achieving more efficient cleaning and inflation operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING CHERVON IND
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-24
Smart Images
Figure CN224550389U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of power tool technology, and more specifically to a blower device. Background Technology
[0002] In daily life, air blowers are frequently used in various scenarios requiring cleaning or inflation. Air blowers deliver high-pressure gas at high speeds and pressures.
[0003] In recent years, the trend of transitioning from pneumatic blowers to electric blowers has become very clear. Electric blowers have a wide range of applications, including cleaning dust and sawdust, inflating balloons, and even functioning as small vacuum cleaners. Users require electric blowers to have good and strong blowing and suction capabilities to complete tasks quickly.
[0004] This section provides background information related to this application, which is not necessarily prior art. Utility Model Content
[0005] One objective of this application is to solve or at least alleviate some or all of the aforementioned problems. Therefore, one objective of this application is to provide a blower with a stronger blowing effect, thereby improving its efficiency.
[0006] To achieve the above objectives, this application adopts the following technical solution:
[0007] A blower device configured to discharge air from an exhaust port includes: a main housing forming a handle for a user to hold, and a mounting portion for mounting a nozzle, the mounting portion being configured to detachably mount one of a variety of nozzles with different opening areas at the top; a motor, at least partially housed within the main housing, the motor including a motor body and a motor shaft, the motor body including a stator and a rotor; the motor shaft being capable of rotating synchronously with the rotor; a fan, at least partially housed within the main housing, configured to rotate in response to the rotation of the motor shaft, discharging air from the exhaust port of the nozzle; a power supply device for providing electrical energy to the motor; the fan being located between the air inlet of the main housing and the motor body in the axial direction of the motor shaft, the maximum rotational speed of the motor shaft being greater than or equal to 120,000 RPM and less than or equal to 300,000 RPM; the blower device further includes a circuit board electrically connected to the motor, the circuit board being located between the exhaust port and the motor body in the axial direction of the motor shaft; when the motor is driven at maximum rotational speed, the maximum air pressure of the air discharged from the exhaust port is greater than or equal to 12 kPa and less than or equal to 230 kPa.
[0008] In some embodiments, the maximum speed of the motor shaft is greater than or equal to 130,000 RPM.
[0009] In some embodiments, the maximum air pressure discharged from the exhaust vent is greater than or equal to 66 kPa.
[0010] In some embodiments, the maximum air volume at the exhaust vent is greater than or equal to 0.5 m³ / min and less than or equal to 4 m³ / min.
[0011] In some embodiments, the maximum wind speed at the exhaust vent is greater than or equal to 145 m / s and less than or equal to 620 m / s.
[0012] In some embodiments, the maximum thrust at the exhaust vent is greater than or equal to 1.9 N and less than or equal to 33 N.
[0013] In some embodiments, the diameter of the fan is less than or equal to 55 mm.
[0014] In some embodiments, the area of the exhaust vent is greater than or equal to the area of a circle with a diameter of 7.2 mm and less than or equal to the area of a circle with a diameter of 13.5 mm.
[0015] In some embodiments, the motor is disposed between the fan and the circuit board.
[0016] In some embodiments, the blower further includes an elastic element that is distributed radially along the motor.
[0017] In some embodiments, the main housing includes an inner housing and an outer housing, the motor is disposed inside the inner housing, and the elastic element is disposed between the motor and the inner housing.
[0018] In some embodiments, the blower further includes a coupling for attaching a battery pack, the battery pack being detachably attached to the coupling; the battery pack has a capacity of 5Ah or greater and a rated voltage of 18V or greater.
[0019] In some embodiments, the hair dryer also includes a handle for a user to hold, the handle including a trigger configured to be activated to at least control the speed of the motor.
[0020] In some embodiments, the length of the handle in the front-rear direction of the blower is range B, and the center of the blower is within range B.
[0021] In some embodiments, the motor, fan, and circuit board are integrated.
[0022] In some embodiments, a blower device configured to expel air from an exhaust port includes: a main housing forming a handle for a user to hold, and a mounting portion for mounting a nozzle, the mounting portion being configured to detach and mount one of a variety of nozzles with different opening areas at the top; a motor, at least partially housed within the main housing, the motor including a motor body and a motor shaft, the motor body including a stator and a rotor; the motor shaft being rotatable synchronously with the rotor; a circuit board electrically connected to the motor; a fan, at least partially housed within the main housing, configured to rotate in response to the rotation of the motor shaft to expel air from the exhaust port; a power supply device including a battery pack for providing electrical power to the motor; the fan being located between the air inlet of the main housing and the motor body in the axial direction of the motor shaft, the maximum rotational speed of the motor shaft being greater than 120,000 RPM; and the circuit board being located between the exhaust port and the motor body in the axial direction of the motor shaft.
[0023] In some embodiments, a blower device configured to expel air from an exhaust port includes: a main housing forming a handle for a user to hold, and a mounting portion for mounting a nozzle, the mounting portion being configured to detachably mount one of a variety of nozzles with different opening areas at their tips; a motor, at least partially housed within the main housing, the motor including a motor body and a motor shaft, the motor body including a stator and a rotor; the motor shaft being capable of rotating synchronously with the rotor; and a fan, at least partially housed within the main housing, configured to rotate in response to the rotation of the motor shaft, expelling air from the exhaust port of the nozzle; An electrical device is used to provide electrical power to the motor; a fan is located between the air inlet of the main housing and the main body of the motor in the axial direction of the motor shaft; the maximum speed of the motor shaft is greater than or equal to 120,000 RPM and less than or equal to 300,000 RPM; the blower also includes a circuit board electrically connected to the motor, the circuit board being located between the air outlet and the main body of the motor in the axial direction of the motor shaft; when the blower drives the motor at maximum speed, the maximum value of the product of the area of the air outlet and the air velocity discharged from the air outlet is greater than or equal to 0.008 m³ / s and less than or equal to 0.064 m³ / s.
[0024] In some embodiments, the maximum air pressure discharged from the exhaust vent is greater than or equal to 66 kPa.
[0025] In some embodiments, the maximum wind speed at the exhaust vent is greater than or equal to 145 m / s and less than or equal to 620 m / s.
[0026] In some embodiments, the diameter of the fan motor is less than or equal to 55 mm, and the ratio of the motor diameter to the fan diameter is greater than or equal to 0.8 and less than or equal to 1.2.
[0027] In some embodiments, a blower device configured to expel air from an exhaust port includes: a main housing forming a handle for a user to hold, and a mounting portion for mounting nozzles, the mounting portion being configured to detach and attach one of a variety of nozzles with different opening areas at their tips; a motor, at least partially housed within the main housing, the motor including a motor body and a motor shaft, the motor body including a stator and a rotor; the motor shaft being capable of rotating synchronously with the rotor; and a fan, at least partially housed within the main housing, configured to rotate in response to the rotation of the motor shaft, expelling air from the nozzles. The exhaust vent discharges air; a power supply device is used to provide electrical energy to the motor; a fan is located between the air inlet of the main housing and the main body of the motor in the axial direction of the motor shaft; the diameter of the motor is less than or equal to 55 mm, and the ratio of the diameter of the motor to the diameter of the fan is greater than or equal to 0.8 and less than or equal to 1.2; the blowing device also includes a circuit board electrically connected to the motor, which is located between the exhaust vent and the main body of the motor in the axial direction of the motor shaft; when the motor is driven at maximum speed, the maximum air pressure of the air discharged from the exhaust vent is greater than or equal to 12 kPa and less than or equal to 230 kPa.
[0028] The advantages of this application are: the maximum rotational speed of the blower motor shaft is greater than or equal to 120,000 RPM and less than or equal to 300,000 RPM, which is a relatively high maximum speed; when the motor rotates at its maximum speed, the maximum air pressure at the exhaust port is greater than or equal to 12 kPa and less than or equal to 230 kPa, which is also a relatively high maximum air pressure. Therefore, the blower has a stronger blowing effect, which can improve the blowing efficiency for the user. Attached Figure Description
[0029] Figure 1 This is a perspective view of a blower device according to an embodiment.
[0030] Figure 2 yes Figure 1 Side view of the blower device.
[0031] Figure 3 yes Figure 1 A side sectional view of the blower device.
[0032] Figure 4 yes Figure 1 Rear view of the blower device.
[0033] Figure 5 yes Figure 1 An exploded view of part of the blower device.
[0034] Figure 6a yes Figure 1 A three-dimensional view of the nozzle and inner housing of the blower device.
[0035] Figure 6b yes Figure 6aA stereoscopic view from another perspective.
[0036] Figure 7 This is a data table diagram showing the different maximum rotation speeds of the blower and the maximum air volume, maximum air pressure, maximum air speed, and maximum thrust corresponding to the blower nozzle in one embodiment. Detailed Implementation
[0037] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.
[0038] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0039] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.
[0040] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.
[0041] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values that do not use relative terms should also be disclosed as specific values with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.
[0042] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.
[0043] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.
[0044] like Figures 1 to 4 A blower device 100 according to an embodiment of this application is shown, such as Figure 1 As shown, the blower device 100 includes a main housing 110, a motor 120, a fan 130, a circuit board 140, and a power supply device. For ease of description, the following definitions are used: Figure 1 As shown: front side, rear side, left side, right side, top side, and bottom side. The front-to-back direction is the axial direction of the blowing device 100, and the top-to-bottom direction is the radial direction of the blowing device 100.
[0045] The power supply device provides electrical energy to the motor 120, i.e., the blower device 100. In this embodiment, the power supply device includes a DC power supply 200, such as a battery pack. The battery pack, in conjunction with a corresponding power circuit, supplies power to the corresponding components within the blower device 100. Those skilled in the art should understand that the power supply device is not limited to the use of a battery pack; it can also supply power to the corresponding components within the device via mains power or AC power, in conjunction with corresponding rectification, filtering, and voltage regulation circuits. In this embodiment, the DC power supply 200 is specifically configured as a battery pack; the term "battery pack 200" will be used hereinafter to refer to the DC power supply, but this should not be construed as a limitation of this application.
[0046] In some embodiments, the blower 100 further includes a coupling portion 210 for connecting the battery pack 200, such as... Figure 1 As shown, the connecting part 210 is located at the lowest end of the blower 100. The battery pack 200 is detachably connected to the connecting part 210 so that the battery pack can be replaced at any time when the battery pack 200 is low on power, and the battery pack 200 can be charged.
[0047] In some embodiments, the battery pack 200 has a capacity of 5 Ah or greater. Optionally, the battery pack 200 may have a capacity of 6 Ah. Optionally, the battery pack 200 may have a capacity of 8 Ah. Optionally, the battery pack 200 may have a capacity of 12 Ah. In some embodiments, the battery pack 200 has a rated voltage of 18 V or greater. Optionally, the battery pack 200 may have a rated voltage of 18 V. Optionally, the battery pack 200 may have a rated voltage of 20 V. Optionally, the battery pack 200 may have a rated voltage of 24 V.
[0048] An air inlet 101 and an air outlet 102 of a blower 100 are formed along the axial direction of the main housing 110. The air inlet 101 is located at the rear end (i.e., the rear end) of the blower 100, and the air outlet 102 is located at the top end (i.e., the front end) of the blower 100. Optionally, the opening area of the air inlet 101 is equal to the opening area of the air outlet 102. Optionally, the opening area of the air inlet 101 is larger than the opening area of the air outlet 102, so that external air can enter the interior of the main housing 110 more quickly. Optionally, the opening area of the air inlet 101 is smaller than the opening area of the air outlet 102. The air inlet 101 can be... Figure 4 The mesh-like air inlet shown can also be any other shape that allows external air to flow in; this application does not limit this. This application uses the example of a circular hole shape for the air inlet 101 and the air outlet 102 for specific explanation. In addition, the air inlet 101 and the air outlet 102 can also be square or other shapes; this application does not limit this.
[0049] The main housing 110 has a handle 111 and a mounting portion 112. The handle 111 is for the user to hold the blower 100, and the mounting portion 112 forms an air outlet 102 for mounting a nozzle 150. The nozzle 150 is detachably mounted to the mounting portion 112, such as... Figures 2 to 6b As shown, the nozzle 150 is generally formed into a funnel shape that tapers at the front end, extending forward from the front end of the mounting portion 112. The nozzle 150 includes a first end 151 that contacts the mounting portion 112, and a second end 152 opposite to the first end 151. The first end 151 is the tail end (i.e., the rear end) of the nozzle 150, and the second end 152 is the top end (i.e., the front end) of the nozzle 150. The first end 151 forms an air inlet 153 of the nozzle 150, and the second end 152 forms an air outlet 154 of the nozzle 150. Thus, external air flows into the main housing 110 from the air inlet 101, flows from the air outlet 102 to the air inlet 153 of the nozzle 150, and finally flows out of the blower 100 from the air outlet 154 of the nozzle 150. In addition, when the nozzle 150 is not installed on the mounting portion 112, the air outlet 102 on the mounting portion 112 functions as the air outlet of the blower 100. In this application, the air inlet 153 and the air outlet 154 are round holes as an example for specific explanation. In addition, the air inlet 153 and the air outlet 154 can also be square or other shapes, and this application does not limit them.
[0050] The first end 151 is a hollow circular structure, fitted onto the mounting portion 112. This application does not limit the opening area of the first end 151; the opening area of the first end 151 is determined based on the opening area of the mounting portion 112. The opening areas of the second ends 152 of different nozzles 150 can be different. That is, by disassembling and installing different nozzles 150 onto the mounting portion 112, the opening area of the exhaust port 154 from which the air flows out of the blowing device 100 is different, thereby meeting the usage requirements in different blowing scenarios. The first end 151, after being fitted onto the mounting portion 112, can be fixed by a locking mechanism, which is a detachable mechanism. Alternatively, the first end 151 and the mounting portion 112 can each be provided with a snap-fit structure, allowing for snap-fitting or disassembly. Furthermore, the first end 151 can also be detachably installed onto the mounting portion 112 in other ways, which is not limited in this application. Optionally, such as... Figure 3 and Figure 6a , 6b As shown, the opening area of the second end 152 can be smaller than the opening area of the first end 151. Furthermore, the opening area of the second end 152 can be greater than or equal to the opening area of the first end 151; this application does not impose any limitation on this.
[0051] The motor 120 is at least partially housed within the main housing 110, and the motor 120 includes a motor body 121 and a motor shaft 122. The motor body 121 includes a stator 1211 and a rotor 1212. The motor 120 also includes a motor housing. The motor body 121, motor shaft 122, and fan 130 are all located inside the motor housing. The stator 1211 is fixedly supported in the motor housing by multiple ribs provided on the inner circumferential surface of the peripheral wall of the motor housing. The rotor 1212 and the motor shaft 122 are rotatably fixed together. The motor shaft 122 is located in front of and behind the rotor, and the motor shaft 122 drives the rotor to rotate along a first axis A extending in the axial direction of the blower 100. In this embodiment, the motor 120 is an inner rotor brushless motor. In other alternative embodiments, the motor 120 is an outer rotor brushless motor. For an inner rotor motor, the stator is located outside the rotor. For an outer rotor motor, the rotor is sleeved outside the stator. In this embodiment, the brushless motor is a three-phase brushless motor. It is understood that the motor is not limited to a three-phase brushless motor, and can also be other types of DC motors. The above does not affect the substantive content of this application.
[0052] The fan 130 is at least partially housed within the main housing 110, and rotates as the motor shaft 122 rotates. Figure 3 As shown, in the axial direction of the motor shaft 122, a fan 130 is disposed between the air inlet 101 of the main housing 110 and the motor body 121. The rotation of the fan 130 drives air (external air) to flow from the air inlet 101 into the interior of the main housing 110 and out of the air outlet 154 of the nozzle 150. During this process, the air flowing into the interior of the main housing 110 flows between the stator 1211 and the rotor 1212 on the motor body 121, cooling the motor 120.
[0053] In some embodiments, the diameter of fan 130 is less than or equal to 55 mm. Optionally, the diameter of fan 130 is 53 mm. Optionally, the diameter of fan 130 is 50 mm. Optionally, the diameter of fan 130 is 45 mm. Optionally, the diameter of fan 130 is 40 mm.
[0054] Circuit board 140 is at least partially housed within main housing 110, and circuit board 140 is electrically connected to motor 120 to control the operation of motor 120. Figure 3 As shown, in the axial direction of the motor shaft 122, the circuit board 140 is disposed between the motor body 121 and the exhaust port 154 of the nozzle 150.
[0055] like Figure 3As shown, the motor 120 is disposed between the fan 130 and the circuit board 140. Optionally, the motor 120, fan 130, and circuit board 140 are integrated, that is, the fan 130 and circuit board 140 are respectively fixedly connected to the front and rear sides of the motor 120, forming an integral part with the motor 120, and are integrally fixed inside the main housing 110. Optionally, the motor 120, fan 130, and circuit board 140 can also be disposed separately, and each can be fixed inside the main housing 110.
[0056] In some embodiments, the circuit board 140 is also electrically connected to the battery pack 200, controlling the battery pack 200 to provide power to the hair dryer 100. In some embodiments, the hair dryer 100 further includes a battery pack circuit board, which is electrically connected to the battery pack 200 and also electrically connected to the circuit board 140. The battery pack circuit board controls the battery pack 200 to provide power to the hair dryer 100 based on control commands from the circuit board 140. Optionally, the battery pack circuit board may be disposed inside the joint 210. Furthermore, the battery pack circuit board may also be disposed anywhere within the main housing 110 of the hair dryer 100 where it can be conveniently electrically connected to the circuit board 140 and the battery pack 200; this application does not impose any limitations on this.
[0057] like Figure 3 As shown, the main housing 110 includes an inner housing 113 and an outer housing 114. The motor 120, fan 130, and circuit board 140, which are at least partially disposed inside the main housing 110 as described above, are specifically disposed inside the inner housing 113. The blower device 100 also includes an elastic element 160, which is distributed along the radial direction of the motor 120. In some embodiments, such as... Figure 3 As shown in Figure 6, the elastic element 160 is disposed between the motor 120 and the inner housing 113. Specifically, the elastic element 160 is disposed at the middle and tail of the motor 120 along the radial direction. Alternatively, the elastic element 160 can be disposed at other positions along the radial direction of the motor 120; this application does not limit this. In some embodiments, the motor 120 and the inner housing 113 are tightly fitted together, forming an integral unit. In this case, the elastic element 160 is disposed between the inner housing 113 and the outer housing 114 along the radial direction. The number of elastic elements 160 can be any number greater than or equal to one; this application does not limit this. Thus, when the user holds and uses the hair dryer 100, the elastic element 160 can isolate vibration and reduce noise in the motor 120, preventing excessive vibration frequency of the motor 120 from affecting the user and improving the user experience.
[0058] like Figure 2As shown, the hair dryer 100 also includes a trigger 170, which is a trigger switch. The trigger 170 is mounted on the handle 111 for the user to trigger and control the on / off state of the hair dryer 100. In some embodiments, the trigger 170 can also be triggered by the user to control the speed of the motor 120; that is, in this case, the trigger 170 can both control the on / off state of the hair dryer 100 and act as a speed regulator for the hair dryer 100. Optionally, different trigger depths correspond to different speed settings of the hair dryer 100 and different speeds of the motor 120; the deeper the trigger 170 is triggered, the higher the speed of the motor 120. Optionally, the trigger 170 can differentiate between controlling the on / off state of the hair dryer 100 and adjusting the speed of the motor 120 based on the length of time it is pressed. For example, pressing the trigger 170 for a duration greater than or equal to a preset time controls the on / off state of the blower device 100; pressing the trigger 170 for a duration less than the preset time and when the blower device 100 is in the on state controls the speed of the motor 120. Furthermore, the trigger 170 can be other triggering methods corresponding to the speed of the motor 120, and the trigger 170 can also be other methods that distinguish between on / off and speed adjustment; this application does not limit this. In some embodiments, the blower device 100 also includes a speed regulating component. When the blower device 100 is in the on state based on the trigger 170, the speed regulating component is used for user triggering to control the speed of the motor 120. The speed regulating component can be located at any convenient position on the blower device 100 for user control; this application does not limit this. Optionally, the speed regulating component can be a press-type component, adjusting the speed based on the user's pressing depth or number of presses. Optionally, the speed regulating component can be a rotational component, adjusting the speed based on the user's rotation angle. Furthermore, the speed regulating component can be any other component capable of multi-speed adjustment; this application does not limit this.
[0059] In some embodiments, such as Figure 2 As shown, along the front-back direction of the blower 100, the length corresponding to the handle 111 is within range B. The center of gravity of the blower 100 is within range B, that is, the center of gravity of the blower 100 is within the range corresponding to the length of the handle 111 in the front-back direction. Thus, when the blower 100 is placed on the platform, the blower 100 can stand stably.
[0060] In some embodiments, the maximum speed of the motor shaft 122 is greater than or equal to 120,000 RPM and less than or equal to 300,000 RPM. Optionally, the maximum speed of the motor shaft 122 is greater than or equal to 130,000 RPM and less than or equal to 300,000 RPM. Optionally, the maximum speed of the motor shaft 122 is 135,000 RPM. Optionally, the maximum speed of the motor shaft 122 is 140,000 RPM. Optionally, the maximum speed of the motor shaft 122 is 160,000 RPM. Optionally, the maximum speed of the motor shaft 122 is 280,000 RPM.
[0061] In some embodiments, when the motor 120 is driven at its maximum speed, i.e., the maximum speed of the motor shaft 122 is between 120,000 RPM and 300,000 RPM, the speed of the fan 130 is greater than or equal to 120,000 RPM and less than or equal to 300,000 RPM. That is, the speed of the fan 130 corresponds to the maximum speed of the motor shaft 122, and the fan 130 rotates synchronously with the motor shaft 122. Alternatively, the speed of the fan 130 may not correspond to the maximum speed of the motor shaft 122; this application does not impose limitations on this.
[0062] In some embodiments, the area of the exhaust port 154 of the nozzle 150 is greater than or equal to the area of a circle with a diameter of 7.2 mm and less than or equal to the area of a circle with a diameter of 13.5 mm. Optionally, the area of the exhaust port 154 of the nozzle 150 is equal to the area of a circle with a diameter of 8 mm. Optionally, the area of the exhaust port 154 of the nozzle 150 is equal to the area of a circle with a diameter of 10 mm. Optionally, the area of the exhaust port 154 of the nozzle 150 is equal to the area of a circle with a diameter of 12 mm.
[0063] In some embodiments, since the maximum rotational speed of the motor shaft 122 is greater than or equal to 120,000 RPM and less than or equal to 300,000 RPM, the area of the exhaust port 154 of the nozzle 150 is greater than or equal to the area of a circle with a diameter of 7.2 mm and less than or equal to the area of a circle with a diameter of 13.5 mm, and the maximum airflow, maximum air pressure, maximum air velocity, and maximum thrust at the exhaust port 154 of the nozzle 150 are all related to the maximum rotational speed of the motor shaft 122 and the area of the exhaust port 154. Therefore, this application uses a combination of maximum rotational speeds of 120,000 RPM or 300,000 RPM and exhaust port 154 areas of either a circle with a diameter of 7.2 mm or a circle with a diameter of 13.5 mm as examples to test and calculate the numerical ranges of maximum airflow, maximum air pressure, maximum air velocity, and maximum thrust, respectively. The specific ranges are as follows: Figure 7 As shown in the figure. Among them, the maximum air volume, maximum air pressure, maximum air speed and maximum thrust were all measured at a room temperature of 25℃ and an air density of 1.18 kg / m³.
[0064] In some embodiments, the maximum wind pressure P is measured by placing a wind pressure measuring instrument directly at the air outlet. In some embodiments, the maximum wind speed V is calculated based on the formula V=SQRT(P*2000 / ρ), where P is the measured maximum wind pressure and ρ is the air density. In some embodiments, after calculating the maximum wind speed V, the maximum air volume Q is calculated based on the formula Q=V*S*60 / 1000000, where S is the area of the exhaust port 154 of the nozzle 150. In some embodiments, after calculating the maximum wind speed V, the maximum thrust F is calculated based on the formula F=ρSV² / 1000000. In the above formulas, the unit of maximum wind pressure P is kPa, the unit of maximum wind speed V is m / s, the air density ρ is specifically 1.18 kg / m³, the unit of the exhaust port 154 area S of the nozzle 150 is mm², and the unit of thrust F is N.
[0065] In some embodiments, when the motor 120 is driven at its maximum speed, i.e., the maximum speed of the motor shaft 122 is between 120,000 RPM and 300,000 RPM, the maximum air pressure discharged from the exhaust port 154 of the nozzle 150 is greater than or equal to 12 kPa and less than or equal to 230 kPa. Optionally, the maximum air pressure discharged from the exhaust port 154 is greater than or equal to 66 kPa and less than or equal to 230 kPa. Optionally, the maximum air pressure discharged from the exhaust port 154 is 70 kPa. Optionally, the maximum air pressure discharged from the exhaust port 154 is 110 kPa. Optionally, the maximum air pressure discharged from the exhaust port 154 is 150 kPa. Optionally, the maximum air pressure discharged from the exhaust port 154 is 220 kPa.
[0066] In some embodiments, the maximum airflow at the exhaust port 154 of the nozzle 150 is greater than or equal to 0.5 m³ / min and less than or equal to 4 m³ / min. Optionally, the maximum airflow at the exhaust port 154 is greater than or equal to 1.5 m³ / min and less than or equal to 4 m³ / min. Optionally, the maximum airflow at the exhaust port 154 is 1.6 m³ / min. Optionally, the maximum airflow at the exhaust port 154 is 2 m³ / min. Optionally, the maximum airflow at the exhaust port 154 is 3 m³ / min.
[0067] In some embodiments, the maximum wind speed at the exhaust port 154 of the nozzle 150 is greater than or equal to 145 m / s and less than or equal to 620 m / s. Optionally, the maximum wind speed at the exhaust port 154 is greater than or equal to 200 m / s and less than or equal to 620 m / s. Optionally, the maximum wind speed at the exhaust port 154 is 300 m / s. Optionally, the maximum wind speed at the exhaust port 154 is 420 m / s. Optionally, the maximum wind speed at the exhaust port 154 is 460 m / s.
[0068] In some embodiments, the maximum thrust at the exhaust port 154 of the nozzle 150 is greater than or equal to 1.9 N and less than or equal to 33 N. Optionally, the maximum thrust at the exhaust port 154 of the nozzle 150 is greater than or equal to 5.1 N and less than or equal to 33 N. Optionally, the maximum thrust at the exhaust port 154 of the nozzle 150 is 6 N. Optionally, the maximum thrust at the exhaust port 154 of the nozzle 150 is 9.5 N. Optionally, the maximum thrust at the exhaust port 154 of the nozzle 150 is 26 N.
[0069] In some embodiments, the maximum value of the product of the area of the exhaust vent 154 and the air velocity discharged from the exhaust vent 154 is greater than or equal to 0.008 m³ / s and less than or equal to 0.064 m³ / s. Optionally, the maximum value of the product of the area of the exhaust vent 154 and the air velocity discharged from the exhaust vent 154 is 0.01 m³ / s. Optionally, the maximum value of the product of the area of the exhaust vent 154 and the air velocity discharged from the exhaust vent 154 is 0.020 m³ / s. Optionally, the maximum value of the product of the area of the exhaust vent 154 and the air velocity discharged from the exhaust vent 154 is 0.025 m³ / s.
[0070] In some embodiments, the ratio of the diameter of the motor 120 to the diameter of the fan 130 is greater than or equal to 0.8 and less than or equal to 1.2. Optionally, the ratio of the diameter of the motor 120 to the diameter of the fan 130 is 0.95. Optionally, the ratio of the diameter of the motor 120 to the diameter of the fan 130 is 1. Optionally, the ratio of the diameter of the motor 120 to the diameter of the fan 130 is 1.05.
[0071] By setting the motor speed and exhaust port area as described above, this application enables the exhaust port to have a large maximum air volume, maximum air pressure, maximum air speed and maximum thrust, resulting in a strong blowing effect. This allows users to complete their work quickly and improves their work efficiency when using the blower.
[0072] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this application.
Claims
1. A blower device configured to discharge air from an exhaust port, comprising: The main housing forms a handle for the user to hold, and a mounting portion for mounting a nozzle, the mounting portion being configured to be able to detach and mount one of a variety of nozzles with different opening areas at the top. An electric motor, at least partially housed within the main housing, includes a motor body and a motor shaft, the motor body including a stator and a rotor; the motor shaft is capable of rotating synchronously with the rotor. The fan, at least partially housed within the main housing, is configured to rotate in response to the rotation of the motor shaft, discharging air from the exhaust port of the nozzle; A power supply device is used to provide electrical energy to the motor; Its features are, The fan is located between the air inlet of the main housing and the main body of the motor in the axial direction of the motor shaft; the maximum speed of the motor shaft is greater than or equal to 120,000 RPM and less than or equal to 300,000 RPM; the blowing device also includes a circuit board electrically connected to the motor, the circuit board being located between the air outlet and the main body of the motor in the axial direction of the motor shaft. When the motor is driven at the maximum speed, the maximum air pressure of the air discharged from the exhaust port is greater than or equal to 12 kPa and less than or equal to 230 kPa.
2. The blower device as described in claim 1, characterized in that, The maximum speed of the motor shaft is greater than or equal to 130,000 RPM.
3. The blower device as described in claim 1, characterized in that, The maximum air volume at the exhaust vent is greater than or equal to 0.5 m³ / min and less than or equal to 4 m³ / min.
4. The blower device as described in claim 1, characterized in that, The maximum wind speed at the exhaust vent is greater than or equal to 145 m / s and less than or equal to 620 m / s, and the maximum thrust at the exhaust vent is greater than or equal to 1.9 N and less than or equal to 33 N.
5. The blower device as described in claim 1, characterized in that, The motor is positioned between the fan and the circuit board.
6. The blower device as claimed in claim 1, characterized in that, The area of the exhaust vent is greater than or equal to the area of a circle with a diameter of 7.2 mm and less than or equal to the area of a circle with a diameter of 13.5 mm.
7. The blower device as described in claim 1, characterized in that, The blower also includes an elastic element, which is arranged radially along the motor.
8. The blower device as described in claim 7, characterized in that, The main housing includes an inner housing and an outer housing, the motor is disposed inside the inner housing, and the elastic element is disposed between the motor and the inner housing.
9. The blower device as claimed in claim 1, characterized in that, The diameter of the fan is less than or equal to 55mm, and the ratio of the diameter of the motor to the diameter of the fan is greater than or equal to 0.8 and less than or equal to 1.
2.
10. The blower device as claimed in claim 1, characterized in that, Along the front-to-back direction of the blower, the length corresponding to the handle is range B, and the center of the blower is located within range B.