Large-air-volume air duct structure of leaf blower and leaf blower
By designing the duct structure of the duct fan and the extended lip in the leaf blower, the problem of insufficient air volume of the existing leaf blower is solved, and a larger air volume and more efficient motor use is achieved.
Patent Information
- Application Number
- CN202422192750.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-06
AI Technical Summary
The air volume of existing blade blowers is limited by the motor power, which leads to a larger motor when large air volume is required, but its volume and power consumption also increase accordingly, limiting the maximum air volume of the blade blower.
A large air duct structure of the blade blower is designed, including the blade blower housing, duct fan and extension lip. The negative pressure and air flow path are formed through the setting of the duct fan and extension lip to increase the air volume.
Through this design, the air volume of the blade blower can be significantly increased, avoiding the problem of insufficient air volume caused by motor power limitation, and reducing the requirements for motor volume and power consumption.
Smart Images
Figure CN223017517U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of leaf blowers, and more specifically, to an air duct structure of a leaf blower with a large air volume and a leaf blower. Background Art
[0002] A rechargeable leaf blower is a gardening tool used for blowing away fallen leaves, small branches, dust, and paper scraps. It mainly consists of a machine body with an air inlet and an air outlet, a battery pack, an air duct, etc. A circuit board and a motor that are electrically connected to the battery pack are provided inside the machine body. Starting the leaf blower to blow strong air from the air duct can clean the ground.
[0003] However, in the prior art, the air volume of a leaf blower can only be distinguished by the power of the motor. To obtain a large air volume, a larger motor needs to be configured. However, the larger the power of the motor, the larger its volume, and the greater its power consumption, resulting in the maximum air volume of the leaf blower being limited within a certain range. Summary of the Utility Model
[0004] The purpose of the utility model is to provide an air duct structure of a leaf blower with a large air volume and a leaf blower to alleviate the technical problem of small air volume of the leaf blower in the prior art.
[0005] In a first aspect, an embodiment of the utility model provides an air duct structure of a leaf blower with a large air volume, including a leaf blower housing, a ducted fan, and an extended lip;
[0006] The ducted fan is arranged inside the leaf blower housing, and the extended lip is arranged at the air inlet end of the ducted fan;
[0007] An air intake port and an air blowing port are formed on the leaf blower housing. The exhaust port end of the ducted fan is arranged inside the air blowing port, the outer shell of the leaf blower housing is connected to the inner wall of the air blowing port, and the air intake port corresponds to the air inlet of the ducted fan.
[0008] Combined with the first aspect, an embodiment of the utility model provides a possible implementation manner of the first aspect, wherein an air guiding cover is arranged at the air intake port of the leaf blower housing;
[0009] A plurality of ventilation openings are formed on the air guiding cover.
[0010] Combined with the first aspect, an embodiment of the utility model provides a possible implementation manner of the first aspect, wherein the ventilation openings include a central ventilation opening and an outer ring ventilation opening;
[0011] The central ventilation opening is formed in the middle of the air guiding cover, and a plurality of the outer ring ventilation openings are evenly distributed along the circumferential direction of the central ventilation opening.
[0012] In combination with the first aspect, an embodiment of the present utility model provides a possible implementation manner of the first aspect. Among them, a plurality of air guide plates are provided on the above-mentioned central ventilation opening.
[0013] In combination with the first aspect, an embodiment of the present utility model provides a possible implementation manner of the first aspect. Among them, the above-mentioned outer ring ventilation opening extends along the radial direction of the central ventilation opening.
[0014] In combination with the first aspect, an embodiment of the present utility model provides a possible implementation manner of the first aspect. Among them, a plurality of side wall ventilation openings are provided on the outer periphery of the above-mentioned air guiding cover.
[0015] In combination with the first aspect, an embodiment of the present utility model provides a possible implementation manner of the first aspect. Among them, the ratio of the maximum inner diameter to the minimum inner diameter of the above-mentioned extended lip is between 15 / 10 - 12 / 10.
[0016] In combination with the first aspect, an embodiment of the present utility model provides a possible implementation manner of the first aspect. Among them, the ratio of the length of the above-mentioned extended lip to the length of the ducted fan is between 0.8 - 1.
[0017] In combination with the first aspect, an embodiment of the present utility model provides a possible implementation manner of the first aspect. Among them, the ratio of the length of the above-mentioned extended lip to the length of the ducted fan is between 0.85 - 0.9.
[0018] In the second aspect, an embodiment of the present utility model provides a leaf blower, including the leaf blower air duct structure with a large air volume.
[0019] Beneficial effects:
[0020] The present utility model provides a leaf blower air duct structure with a large air volume, including a leaf blower housing, a ducted fan, and an extended lip; the ducted fan is arranged in the leaf blower housing, and the extended lip is arranged at the air inlet end of the ducted fan; an air inlet and an air outlet are provided on the leaf blower housing, the exhaust port end of the ducted fan is arranged in the air outlet, the outer shell of the leaf blower housing is connected to the inner wall of the air outlet, and the air inlet is corresponding to the air inlet of the ducted fan.
[0021] Specifically, a ducted fan is arranged inside the leaf blower housing, and an extended blowing port is arranged at the air inlet end of the ducted fan. When the leaf blower starts to work, the ducted fan starts to work, and a negative pressure is formed at the air inlet end of the ducted fan, so that the air flow at the air inlet of the leaf blower housing flows towards the air inlet of the ducted fan. During this process, the air flow passes through the extended lip and then flows into the ducted fan, and then is discharged from the exhaust port of the ducted fan by the ducted fan. The setting of the extended lip and the ducted fan can improve the air volume.
[0022] An embodiment of the present utility model provides a leaf blower, including a leaf blower air duct structure with a large air volume. The leaf blower has the above-mentioned advantages compared with the prior art, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0024] Figure 1 Schematic diagram of the leaf blower air duct structure with a large air volume provided by the embodiment of the present utility model;
[0025] Figure 2 Rear view of the schematic diagram of the leaf blower air duct structure with a large air volume provided by the embodiment of the present utility model;
[0026] Figure 3 Internal schematic diagram of the leaf blower air duct structure with a large air volume provided by the embodiment of the present utility model;
[0027] Figure 4 Internal structure schematic diagram of the leaf blower air duct structure with a large air volume provided by the embodiment of the present utility model.
[0028] ICON:
[0029] 100 - Leaf blower housing; 110 - Air intake port; 120 - Air blowing port; 130 - Air guiding cover; 131 - Central ventilation port; 132 - Outer ring ventilation port; 133 - Air guiding plate; 134 - Side wall ventilation port;
[0030] 200 - Duct fan; 210 - Air inlet; 220 - Air outlet;
[0031] 300 - Extension lip. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0032] The following will clearly and completely describe the technical solutions of the present utility model in conjunction with the drawings. Obviously, the described embodiments are some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0033] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.
[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.
[0035] In the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0036] The present utility model will be further described in detail below through specific embodiments in conjunction with the drawings.
[0037] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown in
[0038] Specifically, a ducted fan 200 is disposed inside the blower housing 100. An extended blowing port is provided at the air inlet 210 end of the ducted fan 200. When the blower starts to operate, the ducted fan 200 starts to work, and a negative pressure is formed at the air inlet 210 end of the ducted fan 200, causing the air flow at the air intake port 110 of the blower housing 100 to flow towards the air inlet 210 of the ducted fan 200. During this process, the air flow passes through the extended lip 300 and then flows into the ducted fan 200, and then is discharged from the exhaust port 220 of the ducted fan 200. The settings of the extended lip 300 and the ducted fan 200 can increase the air volume.
[0039] See Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in
[0040] Specifically, an air guide cover 130 is provided at the air intake port 110 of the blower housing 100; a plurality of ventilation openings are formed in the air guide cover 130.
[0041] See Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in
[0042] Specifically, a central ventilation opening 131 and a plurality of outer ring ventilation openings 132 are formed in the air guide cover 130. The central ventilation opening 131 is formed in the middle of the air guide cover 130, and the plurality of outer ring ventilation openings 132 are evenly distributed along the circumference of the central ventilation opening 131.
[0043] See Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in
[0044] Specifically, a plurality of air guide plates 133 are provided on the central ventilation opening 131. Through the setting of the air guide plates 133, the air flow can be better gathered into the extended lip 300.
[0045] See Figure 1 , Figure 2 ,Figure 3 and Figure 4 As shown in Figure 4 , in an alternative embodiment of the present embodiment, the outer ring ventilation openings 132 extend in the radial direction of the central ventilation opening 131.
[0046] Specifically, the extension directions of the plurality of outer ring ventilation openings 132 provided on the outer periphery of the central ventilation opening 131 are the same as the radial direction of the central ventilation opening 131, so that the external air flow can enter the extension lip 300 in a cylindrical shape, ensuring stable and sufficient air flow in the extension lip 300.
[0047] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown in Figure 4 , in an alternative embodiment of the present embodiment, a plurality of side wall ventilation openings 134 are provided on the outer periphery of the air guide cover 130.
[0048] Specifically, a plurality of side wall ventilation openings 134 are provided on the outer periphery of the air guide cover 130. By providing the plurality of side wall ventilation openings 134, the air volume introduction can be further improved, and the maximum air volume of the leaf blower can be increased.
[0049] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown in Figure 4 , in an alternative embodiment of the present embodiment, the ratio of the maximum inner diameter to the minimum inner diameter of the extension lip 300 is between 15 / 10 - 12 / 10.
[0050] Specifically, the ratio of the maximum inner diameter to the minimum inner diameter of the extension lip 300 can be set to 15 / 10, or the ratio of the maximum inner diameter to the minimum inner diameter of the extension lip 300 can be set to 14 / 10, or the ratio of the maximum inner diameter to the minimum inner diameter of the extension lip 300 can be set to 13 / 10, or the ratio of the maximum inner diameter to the minimum inner diameter of the extension lip 300 can be set to 12 / 10.
[0051] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown in Figure 4 , in an alternative embodiment of the present embodiment, the ratio of the length of the extension lip 300 to the length of the ducted fan 200 is between 0.8 - 1.
[0052] Specifically, the ratio of the length of the extended lip 300 to the length of the ducted fan 200 can be set to 0.8, or the ratio of the length of the extended lip 300 to the length of the ducted fan 200 can be set to 0.85, or the ratio of the length of the extended lip 300 to the length of the ducted fan 200 can be set to 0.9, or the ratio of the length of the extended lip 300 to the length of the ducted fan 200 can be set to 0.95, or the ratio of the length of the extended lip 300 to the length of the ducted fan 200 can be set to 1.
[0053] This embodiment provides a leaf blower, including a leaf blower air duct structure with a large air volume.
[0054] Specifically, the leaf blower provided in this embodiment has the advantages of the above-mentioned leaf blower air duct structure with a large air volume compared with the prior art, which will not be elaborated here.
[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A leaf blower air duct structure with large air volume, characterized in that: include: A leaf blower housing (100), a ducted fan (200), and an extended lip (300); The ducted fan (200) is disposed in the leaf blower housing (100), and the extended lip (300) is disposed at the air inlet (210) end of the ducted fan (200); The leaf blower housing (100) is provided with an air inlet (110) and an air blowing port (120); the exhaust port (220) end of the ducted fan (200) is arranged in the air blowing port (120); the outer shell of the leaf blower housing (100) is connected to the inner wall of the air blowing port (120); and the air inlet (110) corresponds to the air inlet (210) of the ducted fan (200).
2. The air duct structure of a leaf blower with large air volume according to claim 1, characterized in that: An air inlet (110) of the leaf blower housing (100) is provided with an air inlet hood (130); The air induced hood (130) is provided with a plurality of ventilation openings.
3. The air duct structure of a leaf blower with large air volume according to claim 2, characterized in that: The vents include a central vent (131) and an outer ring vent (132); The central ventilation opening (131) is provided in the middle of the air induced hood (130), and the plurality of outer ring ventilation openings (132) are evenly distributed along the circumference of the central ventilation opening (131).
4. The air duct structure of a leaf blower with large air volume according to claim 3, characterized in that: A plurality of air guide plates (133) are provided on the central vent (131).
5. The air duct structure of a leaf blower with large air volume according to claim 3, characterized in that: The outer ring vent (132) extends along the radial direction of the central vent (131).
6. The air duct structure of a leaf blower with large air volume according to claim 2, characterized in that: A plurality of side wall vents (134) are formed on the outer periphery of the air induction hood (130).
7. The air duct structure of a leaf blower with large air volume according to any one of claims 1 to 6, characterized in that: The ratio of the maximum inner diameter to the minimum inner diameter of the extended lip (300) is between 15 / 10 and 12 / 10.
8. The air duct structure of a leaf blower with large air volume according to any one of claims 1 to 6, characterized in that: The ratio of the length of the extended lip (300) to the length of the ducted fan (200) is between 0.8 and 1.
9. The air duct structure of a leaf blower with large air volume according to claim 8, characterized in that: The ratio of the length of the extended lip (300) to the length of the ducted fan (200) is between 0.85 and 0.
9.
10. A leaf blower, characterized in that: The invention comprises the air duct structure of a leaf blower with large air volume as described in any one of claims 1 to 9.