CN204401528U - A kind of blower - Google Patents

Abstract

The utility model discloses a blower, which comprises a shell, a power unit located inside the shell, a fan unit and a transmission unit connected between the power unit and the fan unit; the power unit includes an engine, and the The engine is arranged in the housing on the side away from the blade unit; the transmission unit includes a crankshaft arranged on the rotation axis of the blade unit, and one side of the crankshaft is connected to the blade unit for The fan blade unit is driven to rotate, and a connecting rod mechanism is arranged on the other side, and the connecting rod mechanism is connected with the piston rod of the engine. The air blower of the present utility model adopts the above-mentioned technical scheme and integrates two assembly structures of a two-stroke engine and a four-stroke engine, so that the above-mentioned two types of engines can be selectively installed in the casing, and the compatibility for the engine is increased. Moreover, the internal structure of the shell is compact, the space occupied is small, and the utility model has the advantages of high energy utilization rate and long service life.

Description

a blower

technical field

The utility model relates to the field of garden tools, in particular to a blower and suction machine.

Background technique

Blower is a commonly used outdoor cleaning tool, which is mainly used for cleaning and collecting fallen leaves, blowing away fallen leaves through blowing, or pulverizing and collecting fallen leaves through suction. Blowing machine on the market comprises main shell at present, and the blower fan that motor and blade are formed is installed in the main shell, is provided with air inlet and air outlet on the main shell. When blowing, a blow pipe is installed on the air outlet, and a fan cover is installed on the air inlet; when the air is sucked, a collection bag is installed on the air outlet, and a suction pipe is installed on the air inlet. Blowers can be divided into portable blowers and hand-push blowers according to their portability, and can be divided into motor-type blowers and engine-type blowers according to their power sources. The blower in the prior art has many defects. For example, the crushing ability of the blower is not strong, and the fallen leaves and debris entering the air duct are easy to accumulate. At this time, the operator has to dump the garbage in the mobile phone bag to clean it. Blow-suction machine; another example is the existing engine-type blow-suction machine. After the two-stroke or four-stroke engine is manufactured, it can only be assembled according to the preset setting and cannot be replaced. This has to increase the mold and add an independent assembly. At the same time, the existing blowing and suction machines have poor heat dissipation. Due to the unreasonable internal structure configuration, most of the wind generated by the rotation of the impeller used to cool down the blowing and suction machines is directly taken away by the fan blades used to generate the blowing and suction force of the blowing and suction machines. , so that the effect of cooling the engine cannot be achieved; moreover, although the existing portable blower is light and portable, it has a certain weight after all. The distance between the blowing and suction outlet of the suction machine and the ground leads to poor blowing and suction effect when the distance is too large, and it is easy to collide with objects when the distance is too small, causing inconvenient operation and even damage to the blowing and suction fan.

To sum up, the blower and suction machine in the prior art cannot meet the requirements of people for gardening craft work, so it is necessary to design a new type of blower and suction machine to overcome the above defects and provide garden workers with greater Easy to operate.

Utility model content

The technical problem to be solved by the utility model is to overcome the defects in the prior art, so as to provide a blower, the structure of the blower can make the two-stroke engine and the four-stroke engine interchangeably assembled inside.

In order to achieve the above object, a blower of the present utility model includes a housing, a power unit located inside the housing, a fan unit and a transmission unit connected between the power unit and the fan unit; the housing It includes a volute part provided with an air inlet and an air outlet, and the fan unit is arranged in the volute part and is located between the air inlet and the air outlet; the power unit includes an engine, and the engine is arranged in the casing The body is located on the side away from the fan unit; the transmission unit includes a crankshaft arranged on the rotation axis of the fan unit, and one side of the crankshaft is connected to the fan unit to drive the fan unit to rotate , the other side is provided with a link mechanism, the link mechanism is connected with the piston rod of the engine; the starter is located at the end of the crankshaft away from the fan unit, and the pull rope end of the starter is located at the shell exterior.

The blade unit is an axial fan, the air inlet is located in the axial direction of the blade unit, and a suction pipe is arranged outside the air inlet.

A blade set is provided on a side of the fan blade unit close to the air inlet, and the blade group rotates synchronously with the fan blade unit to shred objects entering from the air inlet.

The blade set is fixed on the crankshaft.

A flywheel device is also arranged on the crankshaft, and the wind force generated by the flywheel device rotating together with the crankshaft is used to cool down the engine.

The flywheel device is arranged on the crankshaft on the side of the connecting rod mechanism away from the blade unit.

A first handle is also provided outside the housing of the air blower, and the first handle is located on a side of the housing close to the air inlet.

A second handle is also provided outside the shell of the air blower, and the second handle is located on a side of the shell close to the starter.

The air outlet is detachably connected with an elbow structure.

The air blower of the present utility model adopts the above-mentioned technical scheme and integrates two assembly structures of a two-stroke engine and a four-stroke engine, so that the above-mentioned two types of engines can be selectively installed in the casing, and the compatibility for the engine is increased. In addition, the internal structure of the housing is compact, occupies a small space, and has the advantages of high energy utilization rate and long service life.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a partial sectional view of the utility model.

Fig. 3 is a partially enlarged view of part A in Fig. 2 .

Detailed ways

The utility model is described in further detail below by means of drawings and specific embodiments.

As shown in the figure, this embodiment provides a blower, including a housing 1, a power unit inside the housing 1, a fan unit 2, and a transmission unit connected between the power unit and the fan unit.

The casing 1 includes a volute portion 103 provided with an air inlet 101 and an air outlet 102 , and the blade unit 2 is disposed in the volute 103 and located between the air inlet 101 and the air outlet 102 . The blade unit 2 rotates, so that the air flow enters the volute 103 from the air inlet 101 and is discharged through the air outlet 102 , thereby forming an air passage between the air inlet 101 and the air outlet 102 .

The power unit includes an engine 301, the engine 301 is arranged in the casing 1 on a side away from the blade unit 2, and the igniter 301b is arranged close to the cylinder 301c of the engine.

The transmission unit includes a crankshaft 401 arranged on the rotation axis of the fan blade unit 2, one side of the crankshaft 401 is connected to the fan blade unit 2 for driving the fan blade unit 2 to rotate; A link mechanism 402 is provided on a side away from the fan unit 2 , and the link mechanism 402 is connected to the piston rod 301 a of the engine 301 .

The starter 5 is located on the side of the crankshaft 401 away from the blade unit 2 , and the pull rope end 501 of the starter 5 is located outside the casing 1 .

Through the setting of the above structure, the blower of the present utility model integrates two assembly structures of a two-stroke engine and a four-stroke engine, so that the above-mentioned two types of engines can be selectively installed in the housing 1, and the compatibility with the engine is increased. It overcomes that only one type of engine can be configured in the same housing 1 in the prior art. In addition, the housing 1 has a compact internal structure, takes up little space, has the advantages of high energy efficiency and long service life.

The fan unit 2 is an axial fan, and the air inlet 101 is located in the axial direction of the fan unit 2, that is, the air outside the air inlet 101 enters the volute 103 along the axial direction of the fan unit 2, and As the fan unit 2 rotates, it is discharged from the air outlet 102 located in the circumferential direction of the volute portion 103 . A suction pipe 6 is arranged outside the air inlet 101 .

The air suction pipe 6 includes a first air suction pipe 601 and a second air suction pipe 602 connected to each other.

A roller device 7 is provided at the end of the air suction pipe 6 away from the housing 1 .

The end of the suction pipe 6 provided with the roller device 7 is inclined, and the roller device 7 is located at the lower side of the inclined end.

Through the setting of the above-mentioned roller device 7, the end of the suction pipe 6 can be directly placed on the ground when in use, supported by the roller device 7, so that the operator can save strength during long-term work, and push the roller device 7 to It is also more convenient to walk forward or backward.

In addition, since the suction nozzle is inclined, when the roller device 7 supports the entire suction pipe, the distance between the suction nozzle and the ground is easy to control, compared with the prior art that directly controls the distance between the nozzle and the ground by hand It is more convenient, and there will be no defect that the suction effect is not good due to too large distance and the suction pipe collides with objects or the ground due to too small distance.

A blade set 8 is provided on the side of the blade unit 2 close to the air inlet 101 , and the blade set 8 rotates synchronously with the blade unit 2 for shredding objects entering from the air inlet.

The blade set 8 may be fixed on the crankshaft 401 , or fixed on the blade unit 2 , and it can rotate with the rotation of the crankshaft 401 .

A flywheel device 9 is also arranged on the crankshaft 401 , and the wind force generated by the flywheel device 9 rotating together with the crankshaft 401 is used to cool down the engine 301 .

Due to the unreasonable setting position of the flywheel device in the prior art, most of the wind generated by it is taken away by the fan unit before reaching the engine. Therefore, the utility model arranges the flywheel device 9 on the crankshaft 401 at The connecting rod mechanism 301a is away from the side of the blade unit 2, so that the wind force generated by the rotation of the flywheel device 9 must first pass through the engine 301, thereby ensuring a good heat dissipation effect of the engine.

There is also a first handle 10 outside the casing 1 of the air blower, and the first handle 10 is located on the side of the casing 1 close to the air inlet 101 .

There is also a second handle 11 outside the shell 1 of the air blower, and the second handle 11 is located on the side of the shell 1 close to the starter 5 .

Meanwhile, the air outlet 102 is detachably connected with the elbow structure 12 . When using the blower to carry out the blowing operation, install the blowing pipe 13 (dotted line part in the figure) on the air outlet 102, and install the fan blade cover 14 on the air inlet 101; An elbow structure 12 and a collection bag are installed on the air outlet 102 , and the fan blade cover 14 is removed and placed on the outside of the housing 1 on the air inlet 101 , and the suction pipe 6 is installed at the same time.

Claims (9)

1. a blower, is characterized in that: comprise housing, and at the power unit of enclosure interior, fan blade unit and the gear unit that is connected between power unit and fan blade unit; Described housing comprises the volute section being provided with air intake and air outlet, and described fan blade unit to be arranged in described volute section and between described air intake and air outlet; Described power unit comprises motor, and described motor is arranged in housing the side be positioned at away from described fan blade unit; Described gear unit comprises the bent axle be arranged on described fan blade finite element rotation axis, the side of described bent axle is connected for driving fan blade finite element rotation with described fan blade unit, opposite side is provided with linkage, and described linkage is connected with the piston rod of described motor; Starter is positioned at described bent axle one end away from described fan blade unit, and the stay cord end of described starter is positioned at described hull outside.

2. blower as claimed in claim 1, it is characterized in that: described fan blade unit is aerofoil fan, air intake is positioned at described fan blade unit axially, has aspiration channel in described air intake arranged outside.

3. blower as claimed in claim 1, it is characterized in that: described fan blade unit is provided with set of blades near the side of described air intake, described set of blades and described fan blade units synchronization rotate for shredding the object entered from described air intake.

4. blower as claimed in claim 3, is characterized in that: described set of blades is fixed on described bent axle.

5. blower as claimed in claim 1, it is characterized in that: on described bent axle, be also provided with flywheel gear, described flywheel gear together rotates produced wind-force for lowering the temperature to described motor with bent axle.

6. blower as claimed in claim 5, is characterized in that: described flywheel gear is arranged on described bent axle and is positioned at the side of linkage away from described fan blade unit.

7. the blower as described in any one of claim 1 to 6, is characterized in that: the hull outside of described blower is also provided with the first handle, and described first handle is positioned at the side near described air intake on described housing.

8. blower as claimed in claim 7, is characterized in that: the hull outside of described blower is also provided with the second handle, and described second handle is positioned at the side near described starter on described housing.

9. blower as claimed in claim 8, is characterized in that: described air outlet is connected with bend pipe structure separably.