CN219432093U - Garden blower - Google Patents

Abstract

The utility model relates to a garden blower, which comprises an organism, wherein the organism comprises an air inlet section for air to enter, an air outlet section for air to flow out, and an action section which is positioned between the air inlet section and the air outlet section and enables air to flow from the air inlet section to the air outlet section, and is characterized in that: the action section comprises a first fan blade, a second fan blade and a power part, wherein the first fan blade is arranged in the shell, the second fan blade is arranged outside the shell, and the power part is arranged in the middle of the action section, and the first fan blade, the second fan blade and the power part form an independent integral part relative to the action section. The shell, the first fan blade positioned in the shell, the second fan blade positioned outside the shell and the power part form an independent integral part relative to the action section, so that the concentricity of the power part and the first fan blade and the second fan blade can be ensured, and the heat dissipation of the power part can be improved.

Description

Garden blower

Technical Field

The utility model relates to a garden tool, in particular to a garden blower.

Background

In the prior art, garden blowers are a common garden tool, and can help users to clean fallen leaves in a garden by utilizing air flow in working, and the garden blowers use a motor as a driving device to generate vortex in an air duct through high-speed rotation of air leaves. Such garden blowers are commonly used electric blowers, i.e. centrifugal turbines, which have the disadvantage of being very noisy (typically >100 dB) and heavy in operation (typically >4.5 kg); another type is an axial fan, such as a chinese patent application No. CN202010228804.2 (application publication No. CN111749476 a), in which the blower device includes a blower and a power supply unit for supplying power to the blower, wherein the blower includes a housing mechanism including a grip portion and a blower having an axis, wherein a motor and a fan are disposed in the blower, and the conventional blower is typically designed such that the fan is directly connected to a power output end of the motor, and generates a high wind speed while generating a large current, thereby resulting in a relatively high temperature of the motor, and as can be seen from fig. 1, the fan is located downstream of the motor along a flow direction of the air current and does not play any role in dissipating heat generated by the motor; therefore, if a fan blade is arranged on the existing blower, the motor has high temperature and cannot raise the wind speed; however, if the blower is provided with two blades, the working current is large and the working time is short, so that it is desirable to treat the heat of the motor in an effective manner and to increase the working time.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a garden blower which can reduce the influence of heat of a motor and reduce working noise.

The technical scheme adopted for solving the technical problems is as follows: this gardens hair-dryer, including the organism, the organism is including the air inlet section that supplies the air to get into, the air-out section that supplies the air to flow and be located between air inlet section and the air-out section and make the air from the air inlet section to the effect section that the air-out section flows, its characterized in that: the action section comprises:

the shell is positioned in the center of the action section and is provided with an air inlet which is in fluid communication with the air inlet section and an air outlet which is in fluid communication with the air outlet section;

the first fan blade is arranged in the shell and adjacent to the air inlet, and a first air flow passage is defined in the shell;

the power part is positioned at the downstream of the fan along the air flowing direction and the power output end of the power part is connected with the first fan blade;

the second fan blade is arranged outside the shell, positioned at the downstream of the first fan blade and adjacent to the air outlet, and a second air flow passage is defined between the shell and the action section;

the shell, the first fan blade positioned in the shell, the second fan blade positioned outside the shell and the power part form an independent integral part relative to the action section.

Further, the action section further comprises a mounting seat for mounting the power part, the mounting seat is arranged at the downstream of the air outlet of the shell, and a gap is formed between the mounting seat and the shell, and the gap enables the first air flow channel and the second air flow channel to be in fluid communication. The inner cavity of the shell defines a first air flow passage to serve as a heat dissipation passage of the power part, and the second air flow passage serves as an air outlet passage independent of the first air flow passage to be used for blowing of the garden blower, and the two air flow passages are communicated through a gap, so that heat dissipation of the power part can be accelerated more quickly; and the heat in the shell is partially transferred to a second air flow channel generated by the second fan blade so as to ensure the optimal heat balance.

Further, the action section also comprises an air guide body coaxially arranged at the downstream of the power part and capable of avoiding turbulent flow in the air flow, and the air guide body is provided with an outflow opening for air outflow. The outflow opening is communicated with the first air flow passage and/or the second air flow passage, so that turbulence can be avoided in either the heat dissipation or the air outlet flow passage.

In order to realize that the air guide body can be arranged between the air inlet section and the air outlet section as part of the action section, from the aspect of installation mode, preferably, the air guide body comprises an inner cylinder body and an outer cylinder body which are axially arranged at intervals, two open parts of the outer cylinder body are respectively connected with the installation seat and the end part of the air outlet section, the cross section of the inner cylinder body is gradually narrowed along the air flow direction, and the outflow opening is arranged on the inner cylinder body.

Further, the inner cylinder body and the outer cylinder body are connected through at least two first connecting ribs extending along the radial direction, and each first connecting rib is provided with a clamping unit mutually clamped with the mounting seat.

In order to realize detachable connection of the mounting seat and the air guide body, preferably, the mounting seat is also of a cylindrical structure and comprises a cylindrical body and an annular seat positioned in the center of the cylindrical body, the annular seat is close to the inner cylindrical body and is connected to the cylindrical body through at least two second connecting ribs extending along the radial direction, the second connecting ribs and the first connecting ribs are connected together through clamping units which are mutually clamped, and at least two fastening seats for fastening pieces to penetrate are arranged at intervals along the circumferential direction at one end of the cylindrical body away from the annular seat and/or the inner wall of the annular seat.

In order to conveniently realize the installation of power portion and mount pad, from the simple angle of assembly structure, preferably, power portion is including motor and motor support, the motor support is including the support inner tube that supplies the power take off end of motor to pass, be located the support inner tube end and the periphery is greater than the support circle of support inner tube and by the section of thick bamboo wall of this support inner tube along radial extension to the third joint bar of support circle, set up on the third joint bar with fastening seat assorted mounting hole, under the state of fastener close-fitting on mounting hole and fastening seat, can with power portion with the mount pad is in the same place.

Further, a first flow hole is formed between the first connection ribs, a second flow hole is formed between the second connection ribs, and a third flow hole is formed between the third connection ribs of the motor bracket, and the first flow hole, the second flow hole and the third flow hole are respectively in fluid communication with the first air flow channel. In order to realize the heat dissipation of the first air flow channel, the cooling air flow generated during the rotation of the first fan blade must smoothly flow out through the power part to take away the heat of the power part and dissipate the heat of the power part, and therefore, the air guide body, the mounting seat and the motor bracket all need to have flow holes for the air flow to flow.

In order to achieve the connection of the air guide body to the mounting seat of the power section, it is preferable that the outer cylinder body extends axially further toward the mounting seat than the inner cylinder body, and that the outer cylinder body is fitted over at least part of the cylindrical body of the mounting seat to form a connection therebetween.

Further, a rectifier for rectifying air flow is arranged at the joint of the end part of the outer cylinder body and the end part of the air outlet section. The rectifier has the functions of: 1. the air flow of the first air flow channel and the second air flow channel can be rectified, and finally flows out of the air outlet section; 2. it is ensured that a part of heat energy accumulated by the housing, which encapsulates the first fan blade, the second fan blade and the power part, is moved outwards through the first air flow channel and/or the second air flow channel.

Compared with the prior art, the utility model has the advantages that: 1. the shell, the first fan blade positioned in the shell, the second fan blade positioned outside the shell and the power part form an integral part independent relative to the action section, so that ideal centering of the power part, the first fan blade and the second fan blade can be ensured, the concentricity is ensured, the clearance between the first fan blade and the shell can be reduced, the aerodynamic efficiency is improved, and the vibration value is reduced, so that the noise is reduced; 2. the shell, the first fan blade and the second fan blade are molded into an integral piece, and then the integral piece is directly connected with the power output end of the power part, so that the traditional split assembly can be avoided: firstly, pressing a metal shaft sleeve on a power output shaft, then mounting a first fan blade on the shaft sleeve, and finally, locking a nut on the first fan blade; 3. the first fan blade is used as the independent fan blade for heat dissipation of the power part, so that the heat dissipation of the power part can be improved.

Drawings

Fig. 1 is a schematic diagram of a blower according to an embodiment of the present utility model;

fig. 2 is an exploded view of a blower according to an embodiment of the present utility model;

fig. 3 is a cross-sectional view of a blower in accordance with an embodiment of the utility model (the dashed arrows indicate the first and second air flow paths);

FIG. 4 is a schematic view of the structure of the working section in the embodiment of the present utility model;

FIG. 5 is an exploded view of FIG. 4 at an angle;

FIG. 6 is an exploded view of the alternative angle of FIG. 4;

FIG. 7 is a schematic view of an air guide structure according to an embodiment of the present utility model;

FIG. 8 is a schematic view of the structure of FIG. 7 at another angle;

FIG. 9 is a schematic view of a structure of a housing according to an embodiment of the present utility model;

FIG. 10 is a schematic view of a structure of a housing at another angle according to an embodiment of the present utility model;

FIG. 11 is a schematic view of a motor bracket according to an embodiment of the present utility model;

FIG. 12 is a schematic view of a mounting base according to an embodiment of the present utility model;

fig. 13 is a schematic view of another angle of the mounting base according to an embodiment of the present utility model.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 1 to 13, which are preferred embodiments of the present utility model. The body a of the garden blower of the present embodiment includes an air inlet section 1 for air to enter, an air outlet section 2 for air to flow out and having a cylindrical shape as a whole, and an action section 3 located between the air inlet section 1 and the air outlet section 2 for air to flow from the air inlet section 1 to the air outlet section 2, wherein the action section 3 includes a housing 31 located at the center of the action section 3, the housing 31 has an air inlet 32 in fluid communication with the air inlet section 1 and an air outlet 33 in fluid communication with the air outlet section 2, a first air vane 34 is disposed in the housing 31 adjacent to the air inlet 32, a first air flow passage 35 in fluid communication with the first air vane 34 is defined in the housing 31 for heat dissipation, a power portion 36 is disposed at a downstream of the housing 31 in the blower in the air flow direction, a second air vane 37 is disposed at a downstream of the first air vane 34 and adjacent to the air outlet 33, a second air flow passage 39 for air outlet is defined between the housing 31 and the action section 3, and the conventional first air flow passage 39 is connected to the power portion 36: the improved shell 31, the first fan blade 34 and the second fan blade 37 are molded into a whole by injection molding, so that the improved shell can be directly connected with a power output end of the power part 36, the traditional split assembly can be avoided, the ideal centering of the power part 36 and the first fan blade 34 and the second fan blade 37 can be ensured, the concentricity is ensured, the play between the first fan blade 34 and the shell 31 can be reduced, the aerodynamic efficiency is improved, the vibration value is reduced, the noise is reduced, and in addition, the first fan blade 34 is used as an independent fan blade for heat dissipation of the power part 36, and the heat dissipation of the power part 36 can be improved.

Specifically, the action section 3 further includes a mounting seat 6 for mounting the power supply portion 36, the mounting seat 6 is disposed downstream of the air outlet 33 of the housing 31, and a gap 61 is formed between the mounting seat 6 and the housing 31, the gap 61 allowing fluid communication between the first air flow passage 35 and the second air flow passage 39. The inner cavity of the housing 31 defines a first air flow passage 35 to serve as a heat dissipation passage of the power portion 36, and a second air flow passage 39 serves as an air outlet passage independent of the first air flow passage 35 for blowing of the garden blower, and the two air flow passages are communicated through a gap 61, so that heat dissipation of the power portion 36 can be faster; and the heat in the shell 31 is partially transferred to the second air flow channel 39 generated by the second fan blade 37 to ensure the optimal heat balance, the acting section 3 further comprises an air guiding body 7 coaxially arranged at the downstream of the power part 36 and capable of avoiding turbulent flow in the air flow, and an outflow opening 71 for the air to flow out is formed on the air guiding body 7. The outflow opening 71 communicates with both the first air flow path 35 and the second air flow path 39, and prevents turbulence in either the heat dissipation path or the air outflow path.

As shown in fig. 7 and 8, the air guiding body 7 of this embodiment includes an inner cylinder 72 and an outer cylinder 73 which are axially spaced, two openings of the outer cylinder 73 are respectively connected with ends of the mounting seat 6 and the air outlet section 2, the cross section of the inner cylinder 72 is gradually narrowed along the air flowing direction, the air outlet 71 is disposed on the inner cylinder 72, so that the air guiding body 7 can be used as a part of the acting section 3 and disposed between the air inlet section 1 and the air outlet section 2 by using the outer cylinder 73, and the inner cylinder 72 and the outer cylinder 73 are connected by at least two first connecting ribs 74 extending along the radial direction, each first connecting rib 74 is provided with a clamping unit which is clamped with the mounting seat 6, correspondingly, the mounting seat 6 is also in a cylindrical structure, and includes a cylindrical body and an annular seat 62 disposed in the center of the mounting seat 6, the annular seat 62 is close to the inner cylinder 72, and is connected on the cylindrical body by at least two second connecting ribs 63 extending along the radial direction, each second connecting rib 63 and the first connecting rib 74 are connected together by a clamping unit which is clamped with each other, the clamping unit can be clamped with the clamping groove 7 or the outer cylinder 7 can be connected with the mounting seat 6 by a clamping unit, and the clamping groove 7 can be further clamped with the mounting seat 6, and the mounting seat 6 can be connected with the corresponding mounting seat 6 by the clamping unit, and the clamping unit can be connected with the corresponding mounting seat 6 by the clamping unit and the clamping groove 6.

And at least two fastening seats 64 for fastening members to pass through are arranged at intervals along the circumferential direction on one end of the cylindrical body far away from the annular seat 62 and the inner wall of the annular seat 62, and the fastening members such as screws are fastened on the fastening seats 64 to realize the connection between the mounting seat 6 and the power part 36. Correspondingly, in order to facilitate the installation of the power part 36 and the installation seat 6, the power part 36 comprises a motor 361 and a motor bracket 362, the motor bracket 362 comprises a bracket inner barrel 363 through which a power output end of the motor 361 passes, a bracket ring 364 positioned at the tail end of the bracket inner barrel 363 and having the periphery larger than the bracket inner barrel 363, and a third connecting rib 365 extending from the barrel wall of the bracket inner barrel 363 to the bracket ring 364 along the radial direction, the third connecting rib 365 is provided with an installation hole 366 matched with the fastening seat 64, and the motor bracket 362 and the motor 361 can be installed together with the installation seat 6 in a state that the fastening piece is tightly matched with the installation hole 366 and the fastening seat 64.

Finally, in order to achieve the heat dissipation of the first air flow channel 35, the cooling air flow generated when the first fan blade 34 rotates must be smoothly discharged through the power portion 36 to take away the heat of the power portion 36 and dissipate the heat of the power portion 36, and for this purpose, the air guide body 7, the mounting seat 6 and the motor bracket 362 each need to have a through hole through which the air flow flows, correspondingly, a first through hole 740 is formed between the first connection ribs 74, a second through hole 630 is formed between the second connection ribs 63, and a third through hole 360 is formed between the third connection ribs 365 of the motor bracket 362, and the first through hole 740, the second through hole 630 and the third through hole 360 are respectively in fluid communication with the first air flow channel 35. A rectifier 8 rectifying the air flow is provided at the junction between the outer tube 73 and the end of the air outlet section 2. The rectifier 8 is used for rectifying the air flow of the first air flow channel 35 and the second air flow channel 39 and finally flowing out of the air outlet section 2, and also ensures that a part of heat energy accumulated by the housing 31 which encapsulates the first fan blade 34, the second fan blade 37 and the power part 36 together moves outwards through the first air flow channel 35 and/or the second air flow channel 39, and the rectifier 8 of the embodiment is an inner ring, an outer ring and radial fins connected between the inner ring and the outer ring which are spaced inwards and outwards.

As described above, in the state where the air intake section 1, the air outlet section 2, and the working section 3 are engaged with each other, since the motor 361 of the power unit 36 can generate a certain negative pressure in the state of high-speed operation to suck external cool air, an external air flow such as cool air flowing into the air intake section 1 and then flowing into the housing 31 of the working section 3 from the air intake hole 42 of the air intake section 1 to the motor 361 through the rotation of the first fan blade 34 to the third flow holes 360 formed between the respective third connection ribs 365 of the motor bracket 362 to the second flow holes 630 formed between the respective second connection ribs 63 of the mounting base 6 to the first flow holes 740 formed between the respective third connection ribs 365 of the air guide body 7 can take away the heat accumulated in the housing 31 to cool the motor 361 by the first air flow passage 35, and at the same time, an external air flow such as cool air flowing into the air intake section 1 to the air outlet section 2 through the rotation of the second fan blade 37 to form the second air flow passages 39 to flow into the leaves or dust; the first air flow passage 35 and the second air flow passage 39 are communicated through the gap 61, and the heat in the housing 31 is partially transferred to the second air flow passage 39 generated by the second fan blade 37, so that the optimal heat balance can be ensured, and the heat dissipation of the power part 36 can be faster.

Claims (10)

1. The utility model provides a gardens hair-dryer, includes organism (A), organism (A) is including air inlet section (1) that supplies the air to get into, air-out section (2) that supplies the air to flow and be located between air inlet section (1) and air-out section (2) and make air from air inlet section (1) to effect section (3) that air-out section (2) flows, its characterized in that: the action section (3) comprises:

a shell (31) which is positioned in the center of the action section (3) and is provided with an air inlet (32) which is in fluid communication with the air inlet section (1) and an air outlet (33) which is in fluid communication with the air outlet section (2);

the first fan blade (34) is arranged in the shell (31) and adjacent to the air inlet (32), and a first air flow passage (35) is defined in the shell (31);

the power part (36) is positioned at the downstream of the shell (31) in the air flowing direction, and the power output end of the power part (36) is connected with the first fan blade (34);

the second fan blade (37) is arranged outside the shell (31) and positioned at the downstream of the first fan blade (34) and adjacent to the air outlet (33), and a second air flow passage (39) is jointly defined between the shell (31) and the action section (3);

the housing (31), the first fan blade (34) located in the housing (31), the second fan blade (37) located outside the housing (31) and the power part (36) form an independent integral part relative to the acting section (3).

2. A garden hair dryer as in claim 1, wherein: the action section (3) further comprises a mounting seat (6) for mounting the power part (36), the mounting seat (6) is arranged at the downstream of the air outlet (33) of the shell (31), a gap (61) is formed between the mounting seat (6) and the shell (31), and the gap (61) enables the first air flow channel (35) and the second air flow channel (39) to be in fluid communication.

3. A garden hair dryer as in claim 2, wherein: the action section (3) further comprises an air guide body (7) coaxially arranged at the downstream of the power part (36) and capable of avoiding turbulent flow in air flow, and an outflow opening (71) for air outflow is formed in the air guide body (7).

4. A garden hair dryer as in claim 3, wherein: the air guide body (7) comprises an inner cylinder body (72) and an outer cylinder body (73) which are axially arranged at intervals, two opening parts of the outer cylinder body (73) are respectively connected with the mounting seat (6) and the end part of the air outlet section (2), the cross section of the inner cylinder body (72) is gradually narrowed along the air flowing direction, and the outflow opening (71) is arranged on the inner cylinder body (72).

5. A garden hair dryer as in claim 4, wherein: the inner cylinder (72) and the outer cylinder (73) are connected by at least two first connecting ribs (74) extending in the radial direction, and each first connecting rib (74) is provided with an engaging unit which is engaged with the mounting seat (6).

6. A garden hair dryer as in claim 5, wherein: the mounting seat (6) is also of a cylindrical structure, and comprises a cylindrical body and an annular seat (62) positioned in the center of the cylindrical body, wherein the annular seat (62) is close to the inner cylinder body (72) and is connected to the cylindrical body through at least two second connecting ribs (63) extending along the radial direction, the second connecting ribs (63) and the first connecting ribs (74) are connected together through clamping units which are mutually clamped, and at least two fastening seats (64) for fastening pieces to penetrate through are arranged at intervals along the circumferential direction at one end of the cylindrical body far away from the annular seat (62) and/or the inner wall of the annular seat (62).

7. A garden hair dryer as in claim 6, wherein: the power part (36) comprises a motor (361) and a motor bracket (362), the motor bracket (362) comprises a bracket inner barrel (363) for a power output end of the motor (361) to pass through, a bracket ring (364) which is positioned at the tail end of the bracket inner barrel (363) and the periphery of which is larger than the bracket inner barrel (363), and a third connecting rib (365) which radially extends from the barrel wall of the bracket inner barrel (363) to the bracket ring (364), wherein the third connecting rib (365) is provided with a mounting hole (366) matched with the fastening seat (64), and the power part (36) and the mounting seat (6) can be mounted together under the state that a fastening piece is tightly matched with the mounting hole (366) and the fastening seat (64).

8. A garden hair dryer as in claim 7, wherein: a first flow hole (740) is formed between each first connecting rib (74), a second flow hole (630) is formed between each second connecting rib (63), a third flow hole (360) is formed between each third connecting rib (365) of the motor bracket (362), and the first flow hole (740), the second flow hole (630) and the third flow hole (360) are respectively in fluid communication with the first air flow channel (35).

9. A garden hair dryer according to any one of claims 6 to 8 wherein: the outer cylinder (73) extends axially further towards the mounting seat (6) than the inner cylinder (72), and the outer cylinder (73) is sleeved with at least part of the cylindrical body of the mounting seat (6) so as to form connection between the two.

10. A garden hair dryer according to any one of claims 4 to 8 wherein: a rectifier (8) for rectifying air flow is arranged at the connection part of the end part of the outer cylinder body (73) and the end part of the air outlet section (2).