CN204728250U - A kind of single tube blower - Google Patents

Abstract

The utility model relates to a blower and suction machine. A single-pipe air blower, comprising a mode switching mechanism, a blowing and suction pipe, and a main body casing, the main body casing is provided with an airflow inlet and an airflow outlet, and the mode switching mechanism includes a shell connected with the mainframe casing, and a communication device is provided inside the casing. The airflow inlet and the airflow outlet flow channel, the flow channel is provided with an air inlet, an air inlet and an outlet and an air outlet, the air inlet is provided with an air inlet opening and closing mechanism, the air outlet is provided with an air outlet opening and closing mechanism, and the air inlet and outlet is provided with a control mechanism for the air inlet and outlet. At the same time, only one of the airflow inlet and the airflow outlet communicates with the flow direction control mechanism, and the blowing and suction pipe is connected to the air inlet and outlet. The utility model provides a single-tube blowing and suction machine without moving the blowing and sucking pipe when switching the blowing and sucking mode, which solves the problem of air leakage and blowing and sucking caused by changing the position of the blowing and sucking pipe in the existing single-pipe blowing and sucking machine to realize mode switching. The problem of reduced performance.

Description

A single tube blower

technical field

The utility model relates to a blowing and aspirating machine, in particular to a single-pipe blowing and aspirating machine.

Background technique

Existing garden type blower, the installation of blowing and suction pipes are usually divided into two types. A kind of blowing and sucking machine with different channels for blowing and sucking. This type of blowing and sucking machine is connected to the blowing pipe and the suction pipe of the main body shell, respectively, with independent air flow channels, and a conversion structure is set in the shell to seal off the dust or the blowing port. , so as to realize the conversion between the blowing mode and the suction mode; the other is a single-pipe blowing machine, this type of blowing machine only has a single air flow channel, that is, it can be used in both blowing and suction modes. It is the same airflow channel (ie the same tube). For example, the patent document of U.S. Patent No. US6735813 discloses a single-pipe blowing machine, which is provided with two air inlets connected to the airflow inlet and two connected to the airflow outlet on the housing. The air outlet, the blowing and suction pipe is rotatably connected to the housing. When the blowing and suction pipes are connected with one air inlet, the other air inlet is closed, one air outlet is closed, and the other air outlet is connected to the dust bag. At this time, it is the suction mode; At the same time, the other air outlet connected to the dust bag is closed, the air inlet used to connect with the suction pipe is closed, and the other air inlet is opened. At this time, it is the air blowing mode.

The existing single-pipe blower has the following disadvantages: due to the need to rotate the blowing pipe when switching modes, it will cause air leakage at the connection between the blowing pipe and the casing, resulting in a decline in the blowing effect. , so it takes a lot of effort to switch modes; in order to prevent safety accidents caused by human organs (such as hands) touching the fan blades through the blowing pipe during the inhalation mode, the linear blowing pipe must be made longer to meet safety requirements. The ratio of the blowing and suction pipe is out of balance, affecting the overall appearance, and it is inconvenient to carry and operate; the distance between the free end of the blowing and suction port (that is, the end far away from the shell) and the ground is different in the blowing mode and the suction mode of the blowing and suction machine, so the blowing In the air mode and inhalation mode, the operator's arms that carry the blower and aspirator cannot all be in a free and straight state (that is, there is a mode where the arm needs to be in a bent state), resulting in poor comfort during operation.

Utility model content

The utility model provides a single-pipe blowing and suction machine without moving the blowing and suction pipe when switching the blowing and suction mode, which solves the problem of air leakage and the The problem of reduced blowing and suction effect.

The above technical problems are solved by the following technical solutions: a single-pipe blowing machine, including a mode switching mechanism, a blowing pipe, a main body casing, a motor arranged on the main body casing, a fan driven by the motor and a device for controlling the rotation of the motor. switch, the host casing is provided with an airflow inlet and an airflow outlet, the airflow inlet allows the airflow generated by the fan rotation to enter the mainframe casing, and the airflow outlet allows the airflow generated by the fan rotation to flow out of the host The housing, the mode switching mechanism includes a housing connected with the housing of the main unit, the housing is provided with a flow channel communicating with the air inlet and air outlet, and the flow channel is provided with an air inlet, an air inlet and an outlet and the air outlet, the air inlet is provided with an air inlet opening and closing mechanism, and the air outlet is provided with an air outlet opening and closing mechanism, and the air inlet and outlet are provided with a device capable of controlling the air inlet and outlet to be only connected with the air inlet and the air outlet at the same time. One of the two air outlets is connected to the flow direction control mechanism, and the blowing and suction pipe is connected to the air inlet and outlet. When working in the blowing mode, the air outlet is closed by the air outlet opening and closing mechanism, the air inlet opening and closing mechanism is not closed to the air inlet and the flow direction control mechanism is cut off from the air inlet and outlet and the air inlet, and the air flows through the air inlet under the action of the fan. After the tuyere enters, it flows from the air inlet and outlet to the suction pipe and blows out. When working in the suction mode, the air outlet opening and closing mechanism does not close the air outlet, the air inlet opening and closing mechanism closes the air inlet and the flow direction control mechanism separates the air inlet and outlet from the air outlet, and the air flows in and out under the action of the fan After the air enters the air outlet, it flows out from the air outlet to achieve the suction of leaves and other sundries.

Preferably, the mode switching mechanism further includes a conversion seat rotatably connected to the housing, the air inlet opening and closing mechanism includes a first valve core connected to the conversion seat, and the air outlet opening and closing mechanism includes a The second valve core of the conversion seat, the flow direction control mechanism includes a third valve core connected to the conversion seat; when the first valve core is closed at the air inlet, the third valve core is located at the air outlet and the inlet and outlet The air inlet and outlet are only connected with the air inlet, and the second valve core is staggered with the air outlet; when the first valve core is staggered with the air inlet, the third valve core is located between the air inlet and the air inlet and outlet, so that the air inlet and outlet The tuyere is only communicated with the air outlet, and the second valve core is closed at the air outlet. The opening and closing mechanism of the air outlet, the opening and closing mechanism of the air inlet and the flow direction control mechanism can be adjusted synchronously, and the convenience and synchronization during adjustment are good. Because of the synchronous adjustment, the speed of mode switching is fast.

Preferably, the mode switching mechanism further includes a motor driving the conversion seat to rotate. It saves effort during adjustment, and is convenient for realizing automation, especially remote control.

Preferably, the air inlet, air inlet and outlet and air outlet are distributed sequentially from the end of the flow channel connected to the air inlet to the end of the flow channel connected to the air outlet. The layout is compact.

Preferably, the part of the flow channel connecting the air inlet and outlet and the air inlet is a bend structure. When in the inhalation mode, human organs cannot move straight forward through the flow channel and touch the fan when they are inhaled by mistake, so that the blowing and suction pipe can be made shorter even though it is straight; and this technical solution can make the air blowing machine The appearance, especially the blowing and suction pipe, still maintains a linear structure, which is convenient and saves space during storage. Thereby overcoming the need in the prior art that "the blowing and sucking pipe is made longer to meet the safety requirements, and the long blowing and sucking pipe is not only out of balance, affects the overall appearance, but also is inconvenient to carry and operate".

Preferably, an air volume regulating device is provided at the end of the blowing and suction pipe away from the air inlet and outlet. It can make the blowing and suction pipe have a larger opening area when it is used as a suction pipe, which is convenient for the sundries to absorb heat smoothly.

Preferably, the air volume regulating device is a door panel hinged in the suction pipe. The structure is simple and the device is easy to maintain.

Preferably, the housing of the main unit is provided with an operating handle, and the operating handle is provided with a holding section in the blowing state and a holding section in the suction state. The included angle between is smaller than the included angle between the straight line where the holding section is in the suction state and the longitudinal axis of the suction pipe. Work comfortably in both blowing and suction modes. It overcomes the problem in the prior art that "the operator's arms cannot be stretched freely in the blowing mode and the suction mode (that is, there is a mode where the arm needs to be in a bent state), resulting in laborious work and poor comfort. "Technical issues.

Preferably, the angle between the straight line where the holding section is in the blowing state and the straight line where the holding section is in the suction state is more than 30°.

Preferably, the mode switching mechanism is located in front of the opening direction of the air inlet. The length of the flow channel can be shortened to reduce the flow group when the air flow flows in the flow channel.

The utility model has the following advantages: the air blowing and air suction share the flow channel, and when the mode is switched, there will be no phenomenon that the blowing and suction effect is reduced due to air leakage at the joint between the blowing and suction pipe and the casing.

Description of drawings

Fig. 1 is a schematic diagram of Embodiment 1 of the present invention when it is in the suction mode;

Fig. 2 is a schematic diagram of Embodiment 1 of the present invention when it is in the blowing mode;

Fig. 3 is the schematic diagram of the second embodiment of the utility model;

Fig. 4 is the schematic diagram of the third embodiment of the utility model;

Fig. 5 is a schematic diagram of Embodiment 4 of the present utility model.

In the figure: main body shell 1, air inlet 11, air outlet 12, dust collecting bag 13, blowing and suction pipe 2, end 21 of the blowing and suction pipe away from the air inlet and outlet, air volume adjustment device 22, hinge shaft 221, door panel 222, motor 3, fan 4. Switch 5 for controlling motor rotation, power cord 6, mode switching mechanism 7, casing 71, conversion seat 72, flow channel 73, air inlet 731, air inlet and outlet 732, air outlet 733, one end of the flow channel connected to the air inlet 734 , one end 735 of the flow channel connected to the air outlet, the part 736 between the flow channel connected to the air inlet and outlet and the air inlet, the part 737 connected to the flow channel between the air outlet and the air outlet, and the part between the flow channel connected to the air inlet and the air inlet Part 738, the part 739 between the air inlet and outlet connected by the flow channel, the air inlet opening and closing mechanism 74, the first valve core 741, the first connecting plate 742, the air outlet opening and closing mechanism 75, the second valve core 751, the first Two connection plates 752, flow direction control mechanism 76, third spool 761, third connection plate 762, operating handle 8, holding section 81 in blowing state, holding section 82 in suction state, floor 9, opening direction A of airflow inlet , the angle A1 between the straight line where the holding section is located in the blowing state and the longitudinal axis of the suction pipe, the angle A2 between the straight line where the holding section is located and the longitudinal axis of the blowing pipe in the suction state, Angle A3 between the straight line where the holding section is located in the blowing state and the straight line where the holding section is located in the suction state, the straight line L1 where the holding section is located in the blowing state, the longitudinal axis L2 of the suction pipe, and the holding line in the suction state The straight line L3 where the segment is located.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Embodiment 1, referring to FIG. 1 , a single-pipe blowing and aspirating machine includes a main body housing 1 , a mode switching mechanism 7 and a blowing and aspirating pipe 2 . The host casing 1 is provided with a motor 3 , a fan 4 driven to rotate by the motor, a switch 5 for controlling the rotation of the motor, and a power cord 6 . The host housing 1 is provided with an air inlet 11 and an air outlet 12 . The host housing 1 is provided with an operating handle 8 . A switch 5 for controlling the rotation of the motor is connected to an operating handle 8 . The operating handle 8 is provided with a holding section 81 in a blowing state and a holding section 82 in a suction state. The mode switching mechanism 7 is located in front of the opening direction A of the air inlet. The mode switching mechanism 7 includes a housing 71 and a switching seat 72 . The shell 71 is connected with the host shell 1 together. A flow passage 73 communicating with the airflow inlet 11 and the airflow outlet 12 is provided in the casing 71 . The conversion base 72 is rotatably connected to the housing 71 . The flow channel 73 is provided with an air inlet 731 , an air inlet and outlet 732 and an air outlet 733 . The air inlet 731 , the air inlet and outlet 732 and the air outlet 733 are distributed sequentially from the end 734 where the flow channel is connected with the air inlet to the end 735 where the flow channel is connected with the air outlet. The part 736 where the flow channel communicates with the air inlet and outlet and the air inlet is a bend structure. The air inlet 731 is provided with an air inlet opening and closing mechanism 74 . The air inlet opening and closing mechanism 74 includes a first valve core 741 and a first connecting plate 742 . The first valve core 741 is connected with the conversion seat 72 through the first connecting plate 742 . The air outlet 733 is provided with an air outlet opening and closing mechanism 75 . The air outlet opening and closing mechanism 75 includes a second valve core 751 and a second connecting plate 752 . The second valve core 751 is connected with the conversion seat 72 through the second connecting plate 752 . The air inlet and outlet 732 are provided with a flow direction control mechanism 76 . The flow direction control mechanism 76 includes a third valve core 761 and a third connecting plate 762 . The third valve core 761 is connected with the conversion seat 72 through the third connecting plate 762 . The blowing and sucking pipe 2 is connected to the air inlet and outlet 732, more specifically, it is connected together in an integral structure, that is, integrally injection molded. One end 21 of the blowing and suction pipe away from the air inlet and outlet is provided with an air volume regulating device 22 . The air volume regulating device 22 includes a hinge shaft 221 and a door panel 222 . The door panel 222 is hinged in the blowing pipe 2 through the hinge shaft 221 . The angle A1 between the straight line L1 where the holding section is located in the blowing state and the longitudinal axis L2 of the blowing and suction pipe is smaller than the angle A1 between the straight line L3 where the holding section is located in the suction state and the longitudinal axis L2 of the blowing and suctioning pipe corner A2. , the angle A3 between the straight line L1 where the holding section is located in the blowing state and the straight line L3 where the holding section is located in the suction state is more than 30°, and the straight line where the holding section is located in the suction state is the same as the longitudinal axis of the suction pipe The difference between the angle A2 and the angle A1 between the straight line where the holding section in the blowing state is subtracted and the longitudinal axis of the suction pipe is not less than 30°.

As shown in the figure, the air inlet opening and closing mechanism 74 , the air outlet opening and closing mechanism 75 , and the flow direction control mechanism 76 are driven to rotate synchronously by rotating the conversion seat 72 . When turning to the first spool 741 closed in the air inlet 731 and stop rotating, now the third spool 761 is located between the air outlet 12 and the air inlet and outlet 732 so that the inlet and outlet 732 are only communicated with the air inlet 11, the second spool 751 is staggered with the air outlet 733, and this state is the suction mode. During the suction mode, the door panel 222 is rotated around the hinge shaft 221 until the blowing and suction pipe is fully opened. The user's hand is held on the holding section 82 in the suction state, and then the switch 5 is used to start the motor 3 to rotate. 3. Drive the fan 4 to rotate, and the airflow generated by the fan 4 makes the leaves etc. pass through the suction pipe 2, the flow channel connected to the part 736 between the air inlet and outlet and the air inlet, the air inlet 11, the air outlet 12, and the flow channel connected between the air outlet and the air outlet. Between the part 737 and the air outlet 733 and into the dust bag 13. During the inhalation mode, the end 21 of the suction pipe away from the air inlet and outlet is closer to the ground 9 .

Referring to FIG. 2 , when switching to the blowing mode, the conversion seat 72 is rotated to drive the air inlet opening and closing mechanism 74 , the air outlet opening and closing mechanism 75 and the flow direction control mechanism 76 to rotate synchronously. When turning to the second spool 751 closed in the air outlet 733 and stop rotating, the third spool 761 is located between the air inlet 11 and the air inlet and outlet 732 so that the air inlet and outlet 732 are only communicated with the air outlet 12, and the first spool 741 is staggered with air inlet 731. In the suction mode, the door panel 222 is rotated around the hinge shaft 221 until the opening size of the blowing and suction pipe 2 meets the needs of use. The user's hand is held on the holding section 81 in the blowing state, and then the motor 3 is started to rotate through the switch 5. The motor 3 drives the fan 4 to rotate, and the airflow generated by the fan 4 passes through the air inlet 731, the flow passage communicates with the air inlet and the air inlet 738, the air inlet 11, the air outlet 12, the flow passage communicates with the air outlet and the air outlet. The part 737 and the flow passage communicate with the part 739 between the air inlet and outlet and the air outlet 732 and then blow out from the blowing and suction pipe 2 . During the blowing mode, the end 21 of the blowing pipe away from the air inlet and outlet is farther away from the ground 9 .

Embodiment two, the difference with embodiment one is:

Referring to FIG. 3 , the mode conversion mechanism 7 is located behind the opening direction A of the air inlet.

Embodiment three, the difference with embodiment one is:

Referring to FIG. 4 , both the air inlet opening and closing mechanism 74 and the air outlet opening and closing mechanism 75 are manual plate valves. Only the flow direction control mechanism 76 can be driven when the rotating seat 72 is driven. The air inlet opening and closing mechanism 74 and the air outlet opening and closing mechanism 75 need to be opened and closed manually independently.

Embodiment four, the difference with embodiment three is:

Referring to FIG. 5 , the flow direction control mechanism 76 is composed of a first valve 763 and a second valve 764 . The first valve 763 is arranged between the air inlet and outlet 732 and the air outlet 733 , and the second valve 764 is arranged between the air inlet and outlet 732 and the air inlet 731 . When it is necessary to work in the suction mode, open the second valve 764 to make the air inlet and outlet 732 communicate with the air inlet 11, open the plate valve forming the air outlet opening and closing mechanism 75 to open the air outlet 733, and close the first valve 763 to make the air inlet and outlet 732 at the same time. Both the air outlet 12 and the air outlet 733 are disconnected, and the plate valve constituting the air inlet opening and closing mechanism 74 is closed so that the air inlet 731 is closed. When it is necessary to work in the blowing mode, close the second valve 764 so that the air inlet and outlet 732 are disconnected from the air inlet 11 and the air inlet 731, and close the plate valve that constitutes the air outlet opening and closing mechanism 75 so that the air outlet 733 is closed and the second valve is opened. A valve 763 allows the air inlet and outlet 732 to communicate with the air outlet 12, and it only needs to open the plate valve constituting the air inlet opening and closing mechanism 74 to open the air inlet 731.

Embodiment five, the difference with embodiment three is:

The relationship between the mode switching mechanism and the direction of the air inlet opening adopts the method of the second embodiment.

Embodiment six, the difference with embodiment four is:

The relationship between the mode switching mechanism and the direction of the air inlet opening adopts the method of the second embodiment.

Embodiment seven, the difference with embodiment one is:

The mode switching mechanism also includes a motor that drives the conversion seat to rotate.

Embodiment eight, the difference with embodiment two is:

The mode switching mechanism also includes a motor that drives the conversion seat to rotate.

Claims (8)

1. a single tube blower, comprise pressure-vaccum pipe, host shell, be arranged at the motor of host shell, the fan rotated and the switch controlling motor rotation is driven by motor, described host shell is provided with airflow inlet and air stream outlet, it is characterized in that, also comprise pattern switching mechanism, described pattern switching mechanism comprises the shell linked together with described host shell, the runner being communicated with described airflow inlet and air stream outlet is provided with in described shell, described runner is provided with air intake, inlet and outlet and air outlet, described air intake is provided with air intake switching mechanism, described air outlet is provided with air outlet switching mechanism, described inlet and outlet is provided with and can controls described inlet and outlet at synchronization only with the flow direction control mechanism that described airflow inlet is communicated with the one in both air stream outlets, described pressure-vaccum pipe butts up against described inlet and outlet.

2. a kind of single tube blower according to claim 1, it is characterized in that, described pattern switching mechanism also comprises the conversion seat being rotationally connected with described shell, described air intake switching mechanism comprises the first spool being connected to described conversion seat, described air outlet switching mechanism comprises the second spool being connected to described conversion seat, and described flow direction control mechanism comprises the 3rd spool being connected to described conversion seat; When the first spool is closed in described air intake, the 3rd spool makes inlet and outlet only stagger with air outlet with airflow inlet connection, the second spool between air stream outlet and inlet and outlet; When the first spool staggers with described air intake, the 3rd spool makes inlet and outlet only be closed in described air outlet with air stream outlet connection, the second spool between airflow inlet and inlet and outlet.

3. a kind of single tube blower according to claim 2, is characterized in that, described pattern switching mechanism also comprises the motor driving described conversion seat to rotate.

4. a kind of single tube blower according to claim 1 or 2 or 3, is characterized in that, one end that described air intake, inlet and outlet connect with air stream outlet to runner with one end that airflow inlet is connected from runner with air outlet three distributes successively.

5. a kind of single tube blower according to claim 1 or 2 or 3, is characterized in that, the part between described flow passage inlet and outlet and airflow inlet is elbow structure.

6. a kind of single tube blower according to claim 1 or 2 or 3, it is characterized in that, described host shell is provided with operating grip, described operating grip is provided with blowing state holding section and air draught state holding section, the straight line at blowing state holding section place with pressure-vaccum pipe lengthwise axial line between the angle straight line that is less than air draught state holding section place with pressure-vaccum pipe lengthwise axial line between angle.

7. a kind of single tube blower according to claim 6, is characterized in that, blowing state holding section place straight line with air draught state holding section place straight line between angle be more than 30 °.

8. a kind of single tube blower according to claim 1 or 2 or 3, it is characterized in that, described pattern switching mechanism is positioned at the front of the opening direction of airflow inlet.