WO2019011343A1 - 吹风工具 - Google Patents

吹风工具 Download PDF

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Publication number
WO2019011343A1
WO2019011343A1 PCT/CN2018/095834 CN2018095834W WO2019011343A1 WO 2019011343 A1 WO2019011343 A1 WO 2019011343A1 CN 2018095834 W CN2018095834 W CN 2018095834W WO 2019011343 A1 WO2019011343 A1 WO 2019011343A1
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WO
WIPO (PCT)
Prior art keywords
blowing
sub
air outlet
air
tube
Prior art date
Application number
PCT/CN2018/095834
Other languages
English (en)
French (fr)
Inventor
查霞红
赵凤丽
Original Assignee
苏州宝时得电动工具有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201720860165.5U external-priority patent/CN207032127U/zh
Priority claimed from CN201720860123.1U external-priority patent/CN207244527U/zh
Application filed by 苏州宝时得电动工具有限公司 filed Critical 苏州宝时得电动工具有限公司
Publication of WO2019011343A1 publication Critical patent/WO2019011343A1/zh

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles

Definitions

  • the invention relates to the technical field of hair blowing tools, in particular to a garden hair dryer or a garden air suction machine.
  • blower tools such as garden blowers and garden hair dryers drive the fan through the motor.
  • the user needs to use the blower function of the blower or the hair dryer to make the directional airflow close to the ground through the blowpipe. It is convenient to blow away the leaves on the ground.
  • a blowing tool comprising a main body casing, a power member disposed in the main body casing, and a fan driven by the power member, the blowing tool Further comprising a blowing pipe, the main body casing is provided with an air inlet and an air outlet, and the airflow enters the main casing through the air inlet and flows into the blowing pipe from the air outlet, and is blown out from the blowing pipe ;
  • the blowing tube extends substantially in the axial direction, and includes a first section communicatively coupled to the air outlet and a second section in communication with the first section, the first section including a first air outlet,
  • the second section includes an intake opening in communication with the first section and a second air outlet located axially at the front end of the intake opening; an outer portion is provided between the first air outlet and the air inlet opening
  • the airflow enters the gap in the second section, and the power component is configured as a high speed motor, and the high speed motor has a rotational speed of 15,000 rpm to 100,000 rpm.
  • the first air outlet is operatively movable in an axial direction to form a first position of the first air outlet opposite to the second air outlet and adjacent to the first air outlet The second position of the second air outlet.
  • the first segment includes a first sub-blowing tube and a second sub-blowing tube that are nested, and the first sub-blowing tube is connected to the air outlet, the second The sub-blowing tube includes an opening communicating with the outside, the opening forming a first air outlet of the first segment, the second sub-blowing tube being operatively axially movable relative to the first sub-blowing tube to Forming the first air outlet to switch between the first position and the second position.
  • the first air outlet is in the first position, and the first section and the second section at least partially overlap in the axial direction.
  • the first air outlet is in a first position, and a first flow rate airflow is blown out from the second air outlet, and the first air outlet is in a second position.
  • the second air outlet is blown outwardly with a second flow rate, the first flow rate being less than the second flow rate.
  • the first air outlet is in a first position, and a first flow of air is blown out from the second air outlet, and the first air outlet is in a second position.
  • the second air outlet blows out a flow having a second flow rate, and the first flow rate is greater than the second flow rate.
  • the first air outlet is in the second position, and the first air outlet is adjacent to the second air outlet or flush with the second air outlet or outward.
  • the second air outlet is adjacent to the second air outlet or flush with the second air outlet or outward.
  • the first air outlet is in the first position or the second position, and there is no gap between the first sub-blowing tube and the second sub-blowing tube.
  • the first segment includes a first sub-blowing tube and a second sub-blowing tube that are nested, the second sub-blowing tube being operatively operative with respect to the first sub-blowing tube Moving in the axial direction to enable the first segment to be extended or retracted, the first segment having an external airflow between the first sub-blowing tube and the second sub-blowing tube when elongating a gap in the second sub-blowing tube.
  • the first air outlet is in the first position or the second position, and the distance between the second air outlet and the air outlet remains unchanged.
  • the first segment includes a first sub-blowing tube connected to the air outlet and a second sub-blowing tube detachably connected to the first sub-blowing tube, the blowing tube Having a first use state in which the second sub-blowing tube is removed and a second use state in which the second sub-blowing tube is mounted, in the first use state, the first sub-blowing tube and the first A gap is formed between the two sections for the outside airflow to enter the second section.
  • the ratio of the cross-sectional area of the inner hole of the air inlet opening to the cross-sectional area of the inner hole of the first air outlet is between 1.1 and 6.
  • the first air outlet blows a wind speed of 50 m/s or more.
  • the first air outlet has a diameter of 30 mm to 80 mm.
  • the high speed motor has a rotational speed of 30,000 rpm to 100,000 rpm.
  • the air blowing tool specifically comprises a garden blower or a garden blower.
  • the blowing tool is a blowing machine
  • the blowing machine further includes an air inlet pipe, one end of the air inlet pipe is connected to the air inlet, and the air blowing machine includes a blowing air The mode and the suction mode, in the blowing mode, the outside airflow flows in from the air inlet, flows into the blowing pipe through the air outlet, and is blown out from the blowing pipe.
  • the second section is fixedly connected to the air inlet duct.
  • first segment and the second segment are connected by a connecting member, and the first segment is operatively rotated relative to the second segment to close the connecting member. Switching between a closed position of the gap or an open position in which the gap is opened; or the second section is operative to rotate relative to the first section to cause the connector to be in a closed position enclosing the gap or Switching between opening positions of the gap is opened.
  • the connecting member comprises at least two sets of connecting ribs connecting the first segment and the second segment, and each set of connecting ribs comprises a plurality of spaced apart sub-ribs
  • the one set of connecting ribs is rotatable relative to the other set of connecting ribs to close or not close the space between the adjacent sub-ribs.
  • the second segment is operative to move axially relative to the first segment to close or open the gap.
  • the hair blowing tool provided by the embodiment of the present disclosure can change the flow rate and speed of the airflow of the air blowing tube without changing the power of the air blowing tool.
  • a blowing pipe which can be applied to a garden air blowing tool
  • the garden air blowing tool includes a main body casing provided with an air inlet and an air outlet, and the airflow is provided by the The air inlet enters the main body casing and flows into the blowing pipe from the air outlet, and is blown out from the blowing pipe;
  • the blowing tube extends substantially in the axial direction, and includes a first section communicatively coupled to the air outlet and a second section in communication with the first section, the first section including a first air outlet, and a second
  • the segment includes an intake opening in communication with the first section and a second air outlet located axially at a front end of the intake opening; between the first air outlet and the air inlet opening, an external airflow is entered into the a gap in the second segment, and the first air outlet is operative to move in the axial direction, the first air outlet having a first position away from the second air outlet and adjacent to the first The second position of the second air outlet.
  • the first segment includes a first sub-blowing tube and a second sub-blowing tube that are nested
  • the second sub-blowing tube includes an opening that communicates with the outside, the opening forming chamber a first air outlet of the first stage, the second sub-blowing tube being operatively axially movable relative to the first sub-blowing tube to form the first air outlet in the first position and Switch between the second positions.
  • the first air outlet is in the first position, and the first section and the second section at least partially overlap in the axial direction.
  • the first air outlet is in a first position, and a first flow rate airflow is blown out from the second air outlet, and the first air outlet is in a second position.
  • the second air outlet is blown outwardly with a second flow rate, the first flow rate being less than the second flow rate.
  • the first air outlet is in a first position, and a first flow of air is blown out from the second air outlet, and the first air outlet is in a second position.
  • the second air outlet blows out a flow having a second flow rate, and the first flow rate is greater than the second flow rate.
  • the first air outlet is in the second position, and the first air outlet is adjacent to the second air outlet or flush with the second air outlet or outward.
  • the second air outlet is adjacent to the second air outlet or flush with the second air outlet or outward.
  • the first air outlet is in the first position or the second position, and there is no gap between the first sub-blowing tube and the second sub-blowing tube.
  • the first air outlet is in the second position, and the first sub air duct and the second sub air duct have an external airflow into the second sub air blow pipe. gap.
  • the first air outlet is in the first position, and a gap between the first sub air duct and the second sub air duct is reduced or closed.
  • the first segment includes a first sub-blowing tube connected to the air outlet and a second sub-blowing tube detachably connected to the first sub-blowing tube, the blowing tube Having a first use state in which the second sub-blowing tube is removed and a second use state in which the second sub-blowing tube is mounted, in the first use state, the first sub-blowing tube and the first A gap is formed between the two sections for the outside airflow to enter the second section.
  • the ratio of the inner hole cross-sectional dimension of the air inlet opening to the inner hole cross-sectional dimension of the first air outlet is between 1.1 and 6.
  • a blowing tool including a main body casing provided with an air inlet and an air outlet, a motor disposed in the main body casing, and a motor driven by the motor a fan, the blowing tool further includes a blowing pipe connected to the air outlet, the airflow entering the main body casing from the air inlet and flowing into the blowing pipe from the air outlet;
  • the blowing pipe comprises at least three sub-blow pipes connected in sequence, wherein the adjacent sub-blow pipes have a gap for external airflow to enter, the motor is a high-speed motor, and the rotating speed of the motor is 15,000-10 10,000 rpm.
  • the adjacent sub-blowing tubes are movably coupled to form the telescopic blowing tube, and the blowing tube has an adjacent between the sub-blowing tubes when elongating The gap is for the outside airflow to enter.
  • the blow tube is reduced or closed adjacent to the sub-blowing tube when retracted to prevent or reduce external airflow.
  • the sub-blowing tube of the blowing pipe comprises a first sub-blowing tube, a second sub-blowing tube, a third sub-drying tube and a fourth sub-drying tube, which are sequentially disposed, a second sub-blowing tube movably coupled to the first sub-blowing tube, the third sub-blowing tube being movably coupled to the second sub-blowing tube, the fourth sub-blowing tube being movably coupled to the The third sub-blowing tube.
  • the first sub-blowing pipe and the second blowing pipe, the second sub-blowing pipe and the third sub-drying pipe are And a gap between the third sub-blowing tube and the fourth sub-blowing tube.
  • the cross-sectional area of the air outlet of the fourth sub-blow pipe is larger than the cross-sectional area of the air outlet of the third sub-blow pipe, and the cross-sectional area of the air outlet of the third sub-blow pipe It is larger than the cross-sectional area of the air outlet of the second sub-blow pipe.
  • the first sub-blowing pipe when the blowing pipe is retracted, is at least partially overlapped with the second sub-blowing pipe, and the second sub-blowing pipe is at least partially
  • the third sub-blowing tube is overlapped and sleeved, and the third sub-blowing tube is at least partially overlapped with the fourth sub-blowing tube.
  • the high speed motor has a rotational speed of 30,000 rpm to 150,000 rpm.
  • the air blowing tool further includes an air inlet pipe, and one end of the air inlet pipe is connected to the air inlet.
  • the fan is coupled to an output shaft of the motor, and the fan faces the air inlet and is adjacent to the air outlet.
  • the blowing pipe since the blowing pipe has a multi-stage sub-blowing pipe which is telescopically sleeved, when the blowing pipe is extended, a gap is provided between the adjacent sub-blowing pipes for the outside airflow to enter, thereby improving the blowing pipe.
  • FIG. 1 is a schematic structural view of a blowing pipe of a blowing tool according to a first embodiment of the present invention in a retracted state;
  • FIG. 2 is a schematic view showing the structure of the air outlet pipe of the air blowing tool shown in FIG. 1 in an extended state.
  • FIG. 3 is a schematic structural view showing a blowing pipe of a blowing tool in an extended state according to a second embodiment of the present invention
  • FIG. 4 is a structural schematic view of the blowing pipe of the blowing tool shown in FIG. 3 in a retracted state.
  • FIG. 5 is a schematic view showing the structure of the blowing pipe of the blowing tool in a retracted state according to the third embodiment of the present invention.
  • Fig. 6 is a structural schematic view showing the blowing pipe of the blowing tool shown in Fig. 5 in an extended state.
  • Figure 7 (a, b) is a schematic cross-sectional view of a blowing pipe of a blowing tool provided by another embodiment.
  • a hair blowing tool includes a main body casing 12, a power member 14 disposed in the main body casing 12, a fan 16 driven by the power member 14, and a main body casing. 12 blowpipes 18.
  • the main body casing 12 includes a through air inlet 122 and an air outlet 124. The airflow enters the main body casing 12 through the air inlet 122 and flows into the air blowing pipe 18 from the air outlet 124, and is blown outward from the air blowing pipe 18.
  • the blow tube 18 extends generally in the axial direction, and includes a first section in communication with the air outlet 124 and a second section in communication with the first section, the first section including a first air outlet for blowing airflow and a first air inlet 182 connected to the air outlet 124, the airflow flows in from the first air inlet 182, and then flows out from the first air outlet, and the second section includes an air inlet opening communicating with the first section and an air inlet opening in the axial direction.
  • the second air outlet 184 of the front end flows out of the first air outlet, flows into the air inlet opening, and is blown out from the second air outlet 184.
  • the first air outlet has a first position away from the second air outlet and a second position near the second air outlet.
  • the first air outlet is in the first position, and the airflow with the first flow velocity is blown outward from the second air outlet 184, and the first air outlet is in the second position, and the first air outlet is blown out from the second air outlet 184.
  • the flow rate of the second flow rate the first flow rate being less than the second flow rate.
  • the first air outlet is in the first position, and the first air flow is blown out from the second air outlet 184, and the first air outlet is in the second position, and the air flow with the second flow is blown out from the second air outlet 184.
  • the first flow rate is greater than the second flow rate.
  • the first position and the second position are both adjustable, and the first air outlet is releasably locked at the plurality of first positions and the second position, and is moved in the axial direction through the first air outlet, so that the first air outlet Changing at a distance from the second air outlet at the plurality of first positions and the plurality of second positions, adjusting an amount of intake air passing through a gap between the first air outlet and the air inlet opening, thereby changing an air volume and a wind speed blown by the air blowing tube .
  • the first air inlet 182 and the second air outlet 184 are connected to each other, and the air blowing pipe 18 is connected to the air outlet 124 of the main body casing 12 through the first air inlet 182, and the first air inlet 182 and the air outlet 124 are provided. Connected.
  • the first air outlet is in the first position or the second position, and the distance between the second air outlet 184 and the air outlet 124 remains unchanged.
  • the air blowing tool is specifically a garden blowing machine.
  • the garden blowing machine has a blowing mode and a suction mode. In the blowing mode, the airflow enters the main body casing 12 from the air inlet 122 and flows into the blowing pipe 18 from the air outlet 124. The working state of the blowing pipe 18 is described in the blowing mode.
  • the hair dryer can also be a garden hair dryer.
  • the garden hair dryer includes a main body casing provided with an air inlet and an air outlet, and a blowing pipe is connected to the air outlet. During the working process, the airflow flows in from the air inlet, and flows through the air outlet to the air blowing pipe. And blow out from the blow pipe.
  • a gap is provided between the first segment and the second segment for the external airflow to enter, and the second segment having a smaller cross-sectional area of the inner hole is closer to the first air inlet than the second segment having a larger cross-sectional area of the inner hole.
  • the first air outlet is operatively movable in the axial direction such that the distance between the first air outlet and the first air inlet 182 is adjustable, so that the length of the first section can be operatively extended, and the first section can be extended into the In the second paragraph, when the length of the first segment is extended, the axial distance of the first segment into the second segment is increased. Specifically, the axial distance between the first air outlet and the first air inlet 182 can be adjusted to change the length of the first segment.
  • the first air outlet When the length of the first segment is extended, the first air outlet is in the axial direction. Close to the second air outlet 184, the axial distance of the first section extending into the second section is increased, thereby changing the overlapping distance of the first section and the second section in the axial direction thereof to adjust the blowing process The amount of air entering the gap between the section and the second section.
  • the first segment is operable to rotate relative to the second segment to close or open the gap; or the second segment is operatively rotatable relative to the first segment to close or open the gap.
  • the first segment and the second segment are rotatably connected by a connector, the first segment being operatively rotatable relative to the second segment to cause the connector to close the gap Switching between a position or an open position in which the gap is opened; or the second section is operable to rotate relative to the first section to cause the connector to close the gap or open the gap Switch between open positions.
  • the connecting member includes at least two sets of connecting ribs 1811, 1812 connecting the first segment and the second segment, and each set of connecting ribs includes a plurality of spaced apart sub-ribs, one of which The set of connecting ribs can be rotated relative to the other set of connecting ribs to close or not close the spacing between the adjacent sub-ribs.
  • the connecting ribs 1811, 1812 are respectively connected to the first segment and the second segment, each set of connecting ribs comprises a plurality of ribs, and the plurality of ribs 1811 (1812) of each set are evenly distributed. Interval distribution.
  • Figure 7 (b) shows the connecting ribs 1811 and 1812 overlapping, with a gap between the first segment and the second segment, rotating the second segment clockwise, to obtain the state shown in Figure 7 (a), the first segment and The gap between the second sections is closed and the airflow cannot enter the blow tube 18 from the gap between the first section and the second section.
  • the connecting ribs 1811, 1812 are respectively connected to the first sub-blowing tube 186 and the third sub-blowing tube 188
  • FIG. 7(a) shows that the connecting ribs 1811 and 1812 are overlapped, the first sub- There is a gap between the blowing pipe 186 and the third sub-drying pipe 188, and the third sub-drying pipe 188 is rotated clockwise.
  • the connecting rib 1812 is rotated clockwise between the adjacent two connecting ribs 1811.
  • the gap between adjacent connecting ribs 1811 is closed so that the gap between the first and second segments is closed or closed.
  • the closure referred to herein is not an air seal in an absolute sense, and can permit a small gap, but hardly affects the flow of the airflow in the duct.
  • the connecting ribs are sector plates or curved plates.
  • the first segment and the second segment are not limited to the rotation of the second segment relative to the first segment, and the first segment may be arranged to be rotatable relative to the second segment as long as it can close or open the gap. can.
  • the second segment is operable to move axially relative to the first segment to close or open the gap.
  • the connection between the first segment and the second segment is movable through the connecting member, and the connecting member comprises at least two sets of connecting ribs fixedly connecting the first segment and the second segment, and each group of adjacent ribs connecting the ribs
  • the spacing of the plates is set, and there is a gap between adjacent ribs, and the two sets of connecting ribs are spaced apart, so that the wind pipe covers the connecting ribs 360 degrees in the radial direction.
  • the two sets of connecting ribs have axially adjacent closed positions and open positions away from each other.
  • the two sets of connecting ribs are in contact with each other to close the gap, and in the open position, between the two sets of connecting ribs There is an axial distance such that there is a gap between adjacent ribs of each set of connecting ribs, the gaps being for external airflow.
  • first sub-blowing tube 186 and the second sub-blowing tube 187 are disposed in a nested manner, and the second sub-blowing tube 187 is movably sleeved on the first sub-blowing tube 186.
  • the second sub-blowing tube 187 is movable relative to the first sub-blowing tube 186 between the extended position and the retracted position to enable the first section to be extended or retracted, thereby causing the first air outlet to be adjacent to the
  • the second position of the second air outlet 184 moves between a second position away from the second air outlet 184.
  • the first air outlet is in a second position
  • the first blowing The port is located at the first position
  • the axial distance of the first segment extending into the second segment is greater than the second sub-blow pipe is located in the retracted position
  • the first section of the hour extends into the axial distance of the second section, that is, when the second sub-drying tube 187 is in the extended position, the first section and the second section are The overlapping distance in the axial direction is greater than the above-described overlapping distance when the second sub-blowing tube 187 is in the retracted position.
  • the blowing pipe 18 has a second use state in which the second sub-blowing pipe 187 is installed and a first use state in which the second sub-blowing pipe 187 is removed, in which the blowing pipe 18 is in the first use state, the first A gap between the sub-blow pipe 186 and the second section is formed for the outside airflow to enter the second section, and the first air outlet is located at the first position.
  • the second air blowing pipe 187 is sleeved on the first sub-blowing pipe, the length of the first segment is extended, and the first air outlet is located near the second air outlet.
  • the length of the first section extending into the second section is increased, so that the overlapping distance of the first section and the second section in the axial direction is increased, and during the blowing process, the first section and the second section are passed. The flow of air flowing into the gap of the segment is reduced.
  • the second sub-blowing tube when the second sub-blowing tube is in the extended position or the retracted position, there is no gap between the first sub-duct and the second sub-duct, and the external airflow cannot be removed from the The first section enters the blowing tube. That is, when the first air outlet is in the first position or the second position, there is no gap between the first sub air duct and the second sub air duct, and the external airflow cannot enter from the first section. Said the hair tube.
  • the second sub-blowing tube when the second sub-blowing tube is in the extended position, that is, the first air outlet is in the second position, the gap between the first sub-duct 186 and the second sub-duct 187 is provided for The outside airflow flows in.
  • the gap between the first sub air duct and the second sub air duct is reduced or closed to reduce or block the external air flow. enter. That is, the second sub-blowing tube is operatively axially movable relative to the first sub-blowing tube to enable the first section to be elongated or retracted, the first sub-blow tube being elongated when the first section is extended There is a gap between the second sub-blowing tube and the outside air blowing tube for entering the second sub-blowing tube.
  • the blowing tube when the second sub-blowing tube 187 is moved to the retracted position, the blowing tube is in the first use state, and when the second sub-drying tube 187 is moved to the extended position, the blowing tube is in the second state. status of use.
  • the first segment comprises a first sub-duct 186 and a second sub-duct 187 that are detachably connected
  • the blow tube is in a second use a state
  • the blowing pipe is in a first use state
  • the first sub-dry pipe and the second are in the first use state
  • a gap is formed between the segments for the outside airflow to enter the second segment.
  • the blowing pipe 18 includes a first use state and a first use state.
  • a gap is provided between the first segment and the second segment for the outside airflow to enter, and the cross-sectional area of the inner hole is small.
  • a second section having a relatively large cross-sectional area of the inner bore is closer to the air inlet 122, and the distance between the first section and the second section is smaller or not, that is, the axial overlap distance between the first section and the second section is smaller.
  • the first air outlet in the second use state, is located at a second position near the second air outlet 184, the length of the first segment is extended, and the axial direction between the first segment and the second segment is The overlap distance is greater than the above overlapping distance of the blow tube in the first use state.
  • the overlapping distance specifically refers to an axial distance between the first air outlet and the air inlet opening in the axial direction in front of the second air inlet opening.
  • the first air outlet is in the first position, and the first segment and the second segment are at least partially overlapped in the axial direction, that is, the overlapping distance of the first segment and the second segment in the axial direction is greater than zero.
  • the apertures of the second sub-blowing tube are generally the same or slightly different, and may also increase or decrease along the distance from the outlet 124 to the distance from the air outlet 124, according to the actual required wind speed, and generally the second sub-drying There is no outside airflow in the pipe, and there is also a little outside airflow.
  • the blowing tube 18 can have various shapes such as a circle, a square, an ellipse, and the like, and only the cross-sectional area thereof satisfies the above-mentioned pore diameter relationship.
  • cross-sectional area of the first segment and the second segment may also be changed as long as the cross-sectional area of the inner hole of the first segment is smaller than the cross-sectional area of the inner hole of the second segment as a whole, or the second segment of the first segment and the second segment
  • the cross-sectional area of the inner hole of the junction is smaller than the cross-sectional area of the inner hole of the second end away from the end of the first section.
  • the rotating fan allows airflow from the air inlet 122 to enter the main body casing. 12, and enters the blowing pipe 18 through the air outlet 124 and the first air inlet 182, and the rotating fan causes the airflow to form a negative pressure, so that the external airflow can enter the blowing pipe 18 from the gap, and the original from the air inlet 122 into the blowing pipe 18.
  • Airflow is blown together from the second air outlet 184, which increases the total air volume of the air blower without increasing the power of the power unit 14.
  • the present blowing tool can be completed without increasing the power of the power unit 14.
  • the power component 14 is a motor, and the motor can be powered by the battery pack or by an external power source. Specifically, in the embodiment, the power component 14 is powered by an external power source, and the host housing 12 is connected with a cable 126 electrically connected to an external power source. In another embodiment, the power member 14 can also be a hydraulic motor.
  • the power member 14 is a motor having a rotational speed of 5000 rpm to 15,000 rpm.
  • the motor is a high speed motor, and the high speed motor has a rotational speed of 15,000 rpm to 100,000 rpm.
  • the high speed motor has a rotational speed of 30,000 rpm to 100,000 rpm, or a high speed motor has a rotational speed of 30,000 rpm to 80,000 rpm, and 30,000 rpm to 60,000 rpm.
  • the fan 16 is coupled to the output shaft of the power member 14, and the fan 16 faces the air inlet 122 and is adjacent to the air outlet 124.
  • the fan 16 has a diameter ranging from 30 mm to 80 mm. The smaller fan diameter requires less drive torque, facilitating the high speed motor to drive a small diameter fan to rotate at a high speed to produce a high velocity blown air stream.
  • In the first use state there is a gap between the first segment and the second segment. During the working process, the external airflow enters the second segment from the gap, thereby increasing the blowing air volume of the blowing pipe, but the flow velocity of the airflow is bound to decrease.
  • the high-speed motor is equipped with a small-diameter fan, which can greatly increase the airflow velocity.
  • the airflow After the airflow is increased, the flow rate after the flow velocity is reduced, the flow rate is still maintained at a high flow rate. Therefore, the airflow can be improved while maintaining a certain flow rate.
  • the amount of air which increases the efficiency of the blow.
  • the wind speed blown by the first air outlet is greater than or equal to 50 m/s.
  • the air outlet of the second sub-blowing tube 187 forms the first air outlet
  • the cross-sectional area of the first air outlet of the second air blowing tube 187 is equal to or smaller than the air outlet of the first sub-blowing tube 186.
  • the cross-sectional area of the inner hole is small, the wind entering from the air inlet 122 can be blown out from the air blowing pipe 18 to achieve a high wind speed, which satisfies different working conditions.
  • the first air outlet has a diameter of 30 mm to 80 mm.
  • the blowing pipe 18 further includes a third sub-blowing pipe 188, and the third sub-blowing pipe 188 forms the second section, and the cross-sectional area of the inner hole of the third sub-blowing pipe 188 is larger than that of the first sub-blowing pipe 186.
  • the first sub-blow pipe 186 is connected to the air outlet 124.
  • the air blowing tool further includes an air inlet pipe 19, and one end of the air inlet pipe 19 is connected to the air inlet port 122 for drawing airflow into the air blowing tool during air blowing.
  • one end of the air inlet duct 19 away from the air inlet 122 is inclined toward the side facing away from the air blowing duct 18.
  • the third sub-blowing tube 188 is fixedly connected to the air inlet tube 19, and the first sub-blowing tube 186 is fixedly connected to the main body housing 12.
  • the second sub-drying tube 187 is axially Upwardly moving toward the second air outlet 184 of the air blowing tube 18, so that the nozzle of the second sub-blowing tube 187 can be moved to be disposed adjacent to the second air outlet 184 or flush with the second air outlet 184 or beyond the air outlet 187 .
  • the airflow flows out through the port with a small cross-sectional area, thereby increasing the wind speed; on the other hand, by moving the second sub-drying pipe 187 to change the wind speed, the second air outlet 184 of the blowing pipe 18 can be operated.
  • the distance of the plane remains constant and, therefore, does not affect the blowing effect.
  • the second sub-blowing tube 187 is movably sleeved on the first sub-blowing tube 186. In the first use state, the second sub-blowing tube 187 and the first sub-blowing tube 186 are at least partially overlapped. . It can be understood that, in another embodiment, the second sub-blowing tube 187 is detachably sleeved on the first sub-blowing tube 186. In the first use state, the second sub-blowing tube 187 is removed from the first sub-blowing tube 186.
  • the air flow also enters the third sub-blowing pipe 188 from the first sub-blowing pipe 186, and a gap is entered between the first sub-blowing pipe 186 and the third sub-drying pipe 188 to increase the air volume.
  • the aperture of the second sub-blowing tube 187 is sleeved outside the first sub-blowing tube 186 or within the first sub-blowing tube 186, so the apertures of the second sub-blowing tube 187 and the second sub-blowing tube 186 are slightly different. However, the difference is small and can be ignored here, and it is considered that the apertures of the respective portions of the blowing pipe 18 are unchanged in the first use state.
  • the second sub-blowing tube 187 can be designed in two stages, a section of the aperture is slightly larger, a section of the aperture is slightly smaller, and a portion having a slightly larger aperture can be sleeved outside the first sub-blowing tube 186.
  • the portion having a smaller aperture is located at one end of the second sub-blowing tube 187 away from the first air inlet 182.
  • the ratio of the cross-sectional area of the inner hole of the third sub-blowing tube 188 to the cross-sectional area of the inner hole of the first sub-blowing tube 186 is between 1.2 and 6.
  • the third sub-blowing tube 188 is a circular tube having a diameter of 50 mm to 500 mm.
  • the ratio of the amount of air blown from the blow pipe 18 to the difference between the cross-sectional area of the inner hole of the third sub-blowing pipe 188 and the cross-sectional area of the inner hole of the first sub-blow pipe 186 is less than 10 cfm/mm 2 .
  • the ratio of the difference between the air volume of the blow pipe 18 and the area of the pipe is less than 10 cfm/mm 2 .
  • the outlet pipe is inserted into the large pipe 60mm to indicate that the second sub-blowing pipe 187 extends into the third sub-blowing pipe 188, and the length of the outlet pipe is 190 mm, and the outlet pipe is inserted into the large pipe 30 mm to indicate that the second sub-drying pipe 187 is extended.
  • the length of the third sub-blowing tube 188 is 30 mm, and the outlet duct is flush with the large tube to indicate the working condition of the first use state, that is, the second sub-drying tube 187 is completely sleeved on the first sub-blowing tube 186.
  • Table 1 The ratio of the air outlet volume to the difference between the size and the tube area under different working conditions
  • the air blowing tool further includes a handle 20 disposed on the main body casing 12 to facilitate holding the air blowing tool.
  • the blowing tool adjusts the blowing pipe 18 to the first use state when facing a relatively complicated working condition, and the rotating fan allows the airflow to enter the main body casing 12 from the air inlet 122, and passes through the air outlet 124 and the first inlet.
  • the tuyere 182 enters the blowing pipe 18, and the rotating fan causes the airflow to form a negative pressure, so that the external airflow can enter the blowing pipe 18 from the gap, and is blown out from the second air outlet 184 together with the original airflow in the blowing pipe 18, so that it is not Under the premise of increasing the power of the power unit 14, the total air volume of the air blowing tool is increased.
  • the second sub-drying pipe 187 may be extended, on the one hand, the airflow is flowed through the port having a small cross-sectional area, thereby increasing the wind speed; on the other hand, the wind speed is changed by moving the second sub-drying pipe 187.
  • the distance between the second air outlet 184 of the air blowing tube 18 and the working plane can be kept constant, and thus the air blowing effect is not affected.
  • the hair dryer can be a garden hair dryer or a garden blower.
  • the invention also provides a blowing pipe, and the blowing pipe provided in the embodiment has the same structure and working state as the blowing pipe in the above-mentioned blowing tool.
  • the blowing pipe 18 includes a first air inlet 182 and a second air outlet 184, and the first air inlet 182 is in communication with the air outlet 124.
  • the blowing pipe 18 includes a first use state and a first use state.
  • the blow pipe 18 includes a first segment and a second segment which are sequentially disposed and communicate with each other, and have a gap between the first segment and the second segment to The first section of the first section having a larger cross-sectional area of the inner hole is closer to the first air inlet 182 than the first air inlet 182; in the first use state, the blowing pipe 18 includes the second sub-drying pipe .
  • the apertures of the second sub-blowing tube are generally the same or slightly different, and may also increase or decrease along the distance from the outlet 124 to the distance from the air outlet 124, according to the actual required wind speed, and generally the second sub-drying There is no outside airflow in the pipe, and there is also a little outside airflow.
  • the blowing tube 18 can have various shapes such as a circle, a square, an ellipse, and the like, and only the cross-sectional area thereof satisfies the above-mentioned pore diameter relationship.
  • the cross-sectional area of the first segment and the second segment may also be changed as long as the cross-sectional area of the inner hole of the first segment is smaller than the cross-sectional area of the inner hole of the second segment as a whole, or the second segment of the first segment and the second segment The cross-sectional area of the inner hole of the junction is smaller than the cross-sectional area of the inner hole of the second end away from the end of the first section.
  • the blowing pipe 18 includes a first use state and a first use state having two different inner hole sectional areas
  • the rotating fan allows the airflow to enter the main body casing 12 from the air inlet 122, and is discharged.
  • the tuyere 124 and the first air inlet 182 enter the blowing pipe 18, and the rotating fan causes the airflow to form a negative pressure, so that the outside airflow can enter the blowing pipe 18 from the gap, together with the original airflow entering the blowing pipe 18 from the air inlet 122.
  • the two air outlets 184 are blown out so that the total air volume of the air blowing tool can be increased without increasing the power of the power unit 14.
  • the present blowing tool can be completed without increasing the power of the power unit 14.
  • the cross-sectional area of the inner hole of the second sub-blow pipe of the blowing pipe 18 in the first use state is equal to or smaller than the cross-sectional area of the inner hole of the first segment in the first use state.
  • the blowing pipe 18 includes a first sub-blowing pipe 186, a second sub-blowing pipe 187, and a third sub-blowing pipe 188.
  • the cross-sectional area of the inner hole of the third sub-blowing pipe 188 is larger than that of the first sub-blowing pipe 186.
  • the first sub-blow pipe 186 is connected to the air outlet 124. In the first use state, the first sub-blowing pipe 186 forms the first segment, and the third sub-blowing pipe 188 forms the second segment; in the first use state, the second sub-blowing pipe 186 is sleeved on the third sub-blowing pipe. 188 is connected to the first sub-blowing tube 186.
  • the second sub-blowing tube 187 is movably sleeved on the first sub-blowing tube 186. In the first use state, the second sub-blowing tube 187 and the first sub-blowing tube 186 are at least partially overlapped. . It can be understood that, in another embodiment, the second sub-blowing tube 187 is detachably sleeved on the first sub-blowing tube 186. In the first use state, the second sub-blowing tube 187 is removed from the first sub-blowing tube 186.
  • the air flow also enters the third sub-blowing pipe 188 from the first sub-blowing pipe 186, and a gap is entered between the first sub-blowing pipe 186 and the third sub-drying pipe 188 to increase the air volume.
  • the aperture of the second sub-blowing tube 187 is sleeved outside the first sub-blowing tube 186 or within the first sub-blowing tube 186, so the apertures of the second sub-blowing tube 187 and the second sub-blowing tube 186 are slightly different. However, the difference is small and can be ignored here, and it is considered that the apertures of the respective portions of the blowing pipe 18 are unchanged in the first use state.
  • the second sub-blowing tube 187 can be designed in two stages, a section of the aperture is slightly larger, a section of the aperture is slightly smaller, and a portion having a slightly larger aperture can be sleeved outside the first sub-blowing tube 186.
  • the portion having a smaller aperture is located at one end of the second sub-blowing tube 187 away from the first air inlet 182.
  • the ratio of the cross-sectional area of the inner hole of the third sub-blowing tube 188 to the cross-sectional area of the inner hole of the first sub-blowing tube 186 is between 1.1 and 6.
  • the third sub-blowing tube 188 is a circular tube having a diameter of 50 mm to 500 mm.
  • the ratio of the amount of air blown from the blow pipe 18 to the difference between the cross-sectional area of the inner hole of the third sub-blowing pipe 188 and the cross-sectional area of the inner hole of the first sub-blow pipe 186 is less than 10 cfm/mm 2 .
  • a hair dryer according to another embodiment of the present invention includes a main body casing 12, a motor 14 disposed in the main body casing 12, a fan 16 driven by the motor 14, and a connection.
  • the main body casing 12 includes a through air inlet 122 and an air outlet 124.
  • the motor 14 is a high speed motor.
  • the blowing pipe 18 includes a first air inlet 182 and a second air outlet 184. The first air inlet 182 is in communication with the air outlet 124 of the main casing 12.
  • the air blowing pipe 18 includes at least three sub-blowing pipes connected in sequence, and a second The cross-sectional area of the air outlet 184 is larger than the cross-sectional area of the first air inlet 182, and the adjacent sub-blowing tubes are relatively movably coupled to form a telescopic blow tube 18, and the blow tube 18 is adjacent between the sub-blow tubes when elongating There is a gap for the outside airflow to enter, and the gap between the adjacent sub-blowing tubes is reduced or closed when the blow tube 18 is retracted to reduce or prevent the inflow of outside air.
  • the cross-sectional area of the sub-blowing tube that opens the second air outlet 184 is larger than the cross-sectional area of the air outlet of the sub-blowing tube that opens the first air inlet 182.
  • the cross-sectional area of the sub-blowing tube adjacent to the second air outlet 184 is greater than the cross-sectional area of the sub-blowing tube remote from the second air outlet 184.
  • the cross-sectional area of the sub-blowing tube refers to the maximum cross-sectional area of the sub-blowing tube.
  • the cross-sectional area of each sub-blowing tube is the same.
  • the rotating fan allows the airflow to enter the main casing 12 from the air inlet 122 when blowing, and
  • the air outlet tube 18 is inserted through the air outlet 124 and the total first air inlet 182, and the rotating fan causes the airflow to form a negative pressure, so that the outside airflow can enter the blowing pipe 18 from the gap, together with the original airflow in the blowing pipe 18 from the total
  • the two air outlets 184 are blown out so that the total air volume of the air blowing tool can be increased without increasing the power of the motor 14.
  • the present blowing tool can be completed without increasing the power of the motor 14.
  • the motor 14 is a high-speed motor, so that the work volume per unit volume is large, so that the overall size and weight of the blow tool can be reduced.
  • the blowing pipe 18 is retracted, the length of the blowing pipe 18 is shortened, and the wind speed loss is small, so the wind speed is large.
  • the motor 14 can be powered by a battery pack or by an external power source. Specifically, in the embodiment, the motor 14 is powered by an external power source, and the host housing 12 is connected with a cable 126 electrically connected to an external power source.
  • the rotational speed of the high speed motor is 15,000 rpm to 100,000 rpm.
  • the high speed motor has a rotational speed of 30,000 rpm to 100,000 rpm, or a high speed motor has a rotational speed of 30,000 rpm to 80,000 rpm, and 30,000 rpm to 60,000 rpm.
  • the fan 16 is connected to the output shaft of the motor 14, and the fan 16 faces the air inlet 122 and is adjacent to the air outlet 124.
  • the sub-blowing tube of the blowing tube 18 includes a first sub-blowing tube 186, a second sub-blowing tube 187, a third sub-blowing tube 188 and a fourth sub-drying tube 189, which are sequentially disposed, and the first sub-blowing tube 186 Connected to the air outlet 124, the second sub-blowing tube 187 is movably coupled to the first sub-blowing tube 186, the third sub-blowing tube 188 is movably coupled to the second sub-blowing tube 187, and the fourth sub-blowing tube 189 is movable The ground is connected to the third sub-blowing tube 188.
  • the cross-sectional area of the air outlet of the fourth sub-blow pipe 189 is larger than the cross-sectional area of the air outlet of the third sub-blow pipe 188, and the cross-sectional area of the air outlet of the third sub-blow pipe 188 is larger than that of the second sub-blow pipe 187.
  • the cross-sectional area of the air outlet of the second sub-blowing tube 187 is equal to the cross-sectional area of the air outlet of the first sub-blowing tube 186.
  • the cross-sectional area of the air outlet of the second sub-blowing tube 187 may also be larger than that of the first sub-blowing tube 186.
  • cross-sectional area of the air outlet of each sub-blowing tube can also be other relationship, as long as the cross-sectional area of the air outlet of the fourth sub-blowing tube 189 is larger than the cross-sectional area of the air outlet of the first sub-blowing tube 186.
  • the first sub-blowing pipe 186 is at least partially overlapped with the second sub-blowing pipe 187
  • the second sub-blowing pipe 187 is at least partially overlapped with the third sub-blowing pipe 188
  • the third The sub-blowing tube 188 is at least partially overlapped with the fourth sub-blowing tube 189.
  • the two adjacent sub-drying pipes are respectively provided with retaining rings, and the retaining rings of the two adjacent sub-blowing pipes can be shifted or matched with each other so as to have a gap or a closed between the two adjacent sub-drying pipes. .
  • the air blowing tool further includes an air inlet pipe 19, and one end of the air inlet pipe 19 is connected to the air inlet port 122 to suck the airflow into the air blowing tool during air blowing.
  • one end of the air inlet duct 19 away from the air inlet 122 is inclined toward the side facing away from the air blowing duct 18.
  • the air blowing tool further includes a handle 20 disposed on the main body casing 12 to facilitate holding the air blowing tool.
  • the blowing tool can extend the blowing pipe 18 when facing a relatively complicated working condition, and the rotating fan allows the airflow to enter the main casing 12 from the air inlet 122, and passes through the air outlet 124 and the total first air inlet 182. Entering the blowing pipe 18, and rotating the fan to form a negative pressure on the airflow, so that the external airflow can enter the blowing pipe 18 from the gap, and is blown out from the total second air outlet 184 together with the original airflow in the blowing pipe 18, so that the airflow is not improved.
  • the total air volume of the air blowing tool is increased.
  • the blow pipe 18 can be retracted. Since the cross-sectional area of the blow pipe 18 is small, the wind speed is large without changing the power of the motor 14, and the length of the blow pipe 18 is shortened when retracting, and the wind speed is reduced. The loss is small, so the wind speed is large.
  • blowing tube in the above embodiment can be applied not only to the hair dryer but also to the blowing machine.
  • FIG. 5 and FIG. 6 show a third embodiment of the present invention.
  • the blowing pipe of the blowing tool provided in this embodiment is similar to the structure of the blowing pipe provided by the first embodiment. The only difference is that the blowing tool provided in this embodiment is The connection relationship between the garden hair dryer and the resulting blow tube is changed, and this embodiment only explains the differences.
  • the air blowing tool is specifically a garden hair dryer, and includes a main body casing 121, a motor 141 disposed in the main body casing 121, a fan 161 driven by the motor 141, and a blowing pipe 181 connected to the main casing 121.
  • the blower further includes Handle 201 for holding.
  • the main body casing 121 includes a through air inlet 1221 and an air outlet 1241.
  • the motor 141 is a high speed motor.
  • the blowing pipe 18 includes a first air inlet 1821 and a second air outlet 1841 which are connected to each other. The first air inlet 1821 communicates with the air outlet 1241 of the main casing 121.
  • the airflow enters the main body casing 121 through the air inlet 1221 and flows into the air blowing pipe 181 from the air outlet 1241, and is blown outward from the air blowing pipe 181.
  • the blowing pipe 181 extends substantially in the axial direction, and includes a first section communicating with the air outlet 1241 and a second section communicating with the first section, the first section including a first air outlet for blowing airflow and
  • the first air inlet 1821 connected to the air outlet 1241 the airflow flows in from the first air inlet 1821, and then flows out from the first air outlet, and the second section includes an air inlet opening communicating with the first section and an air inlet opening in the axial direction.
  • the second air outlet 1841 of the front end flows out of the first air outlet, flows into the air inlet opening, and is blown out from the second air outlet 184.
  • first sub-blow pipe 1861 and the second sub-blow pipe 1871 are disposed in a nested manner, and the second sub-blowing pipe 1871 is movably sleeved on the first sub-blowing pipe 1861.
  • the second sub-blowing tube 1871 is movable relative to the first sub-blowing tube 1861 between the extended position and the retracted position such that the first air outlet is in a second position adjacent to the second air outlet 1841 and away from the The first air outlet 1841 is moved between the first positions.
  • the first air outlet When the second sub-blowing tube 1871 is in the extended position, the first air outlet is in the second position, and when the second sub-blowing tube 1871 is in the retracted position, the first air outlet is located a first position, when the second sub-blowing tube 1871 is in an extended position, the axial distance of the first section extending into the second section is greater than when the second sub-blowing tube is in the retracted position.
  • the first section extends into the axial distance of the second section, that is, the first section and the second section in the axial direction when the second sub-drying tube 187 is in the extended position
  • the overlapping distance on the upper side is greater than the above overlapping distance when the second sub-blowing tube 187 is in the retracted position.
  • the blowing pipe 181 has a second use state in which the second sub-blowing pipe 1871 is installed and a first use state in which the second sub-blowing pipe 1871 is removed, in which the blowing pipe 181 is in the first use state, the first A gap between the sub-blow pipe 1861 and the second section is formed for the outside airflow to enter the second section, and the first air outlet is located at the first position.
  • the second air blowing pipe 1871 is sleeved on the first sub-blowing pipe, the length of the first segment is extended, and the first air outlet is located near the second air outlet.
  • the length of the first section extending into the second section is increased, so that the overlapping distance of the first section and the second section in the axial direction is increased, and during the blowing process, the first section and the second section are passed.
  • the flow of air flowing into the gap of the segment is reduced.
  • the blowing pipe further includes a connecting member connecting the first segment and the second segment, so that the axial distance between the second air outlet and the air outlet is kept unchanged.
  • the second segment includes a third sub-blowing tube 1881
  • the blowing tube 181 further includes a connecting member 1810 connecting the first sub-blowing tube 1861 and the third sub-blowing tube 1881.
  • the third sub-blowing tube 1881 and the first sub-blowing tube 1861 are fixedly connected by a connecting member 1810, and a gap is formed between the connecting member 1810 and the third sub-blowing tube 1881 for the external airflow to enter the first airflow from the gap.
  • Three sons blow pipe 1881 Three sons blow pipe 1881.
  • the connecting member 1810 functions to support the third sub-blowing tube 1881, so that the second air outlet 1841 of the third sub-blowing tube is kept at the same distance from the air outlet 1241, so that the first air outlet is in the first position or the second position. It is able to keep the distance between the second air outlet of the air duct and the ground constant, which is convenient for blowing work.

Abstract

一种吹风工具及吹风管（18，181）；其中吹风管（18，181），能够应用于花园吹风工具上，所述花园吹风工具或吹吸机包括设置有进风口（122，1221）和出风口（124，1241）的主机壳体（12，121），气流由所述进风口（122，1221）进入所述主机壳体（12，121）内并从所述出风口（124，1241）流入所述吹风管（18，181）；所述吹风管（18，181）大致沿轴向延伸，其包括与所述出风口连通连接的第一段、及与所述第一段连通的第二段，所述第一段包括第一吹风口，第二段包括与第一段连通的进气开口及在轴向上位于所述进气开口前端的第二吹风口（184，1841）；所述第一吹风口和所述进气开口之间具有供外部气流进入所述第二段内的间隙，且在所述轴向上，所述第一吹风口相对的具有远离所述第二吹风口（184，1841）的第一位置及靠近所述第二吹风口（184，1841）的第二位置；这样可在不提高动力件的功率的前提下，增加吹风工具的总风量；该吹风工具包括上述吹风管（18，181）。

Description

吹风工具 技术领域
本发明涉及吹风工具技术领域，特别涉及一种花园吹风机或花园吹吸机。
背景技术
花园吹吸机、花园吹风机等传统吹风工具通过电机驱动风扇出风，通常，使用者为了清理花园或者道路上的落叶时需要使用吹吸机或吹风机的吹风功能，通过吹风管使得定向气流靠近地面，方便将地面上的落叶吹走。
当地面的落叶等碎屑堆积得比较厚或体积重量比较大时，如果气流的风力较弱则无法将落叶等碎屑吹动起来，达不到清扫的效果，此时就需要更大的风力才能吹扫干净；另外，当需要清扫的面积较大时，则需要较大的风量才能提高工作效率。为增强吹风工具的风力和/或风量，通常会增大电机的功率，以增大风力和风量。然而，增大电机功率，一是会增加吹风工具整机的重量和体积，不便于搬运和使用，二是会增加生产成本。
发明内容
基于此，有必要提供一种吹风工具，能够在不提高吹风工具功率的前提下提高风量。
本公开实施例解决现有技术问题所采用的技术方案是：一种吹风工具，包括主机壳体、设于所述主机壳体内的动力件和由所述动力件驱动的风扇，所述吹风工具还包括吹风管，所述主机壳体设置有进风口和出风口，气流由所述进风口进入所述主机壳体内并从所述出风口流入所述吹风管，自所述吹风管向外吹出；
所述吹风管大致沿轴向延伸，其包括与所述出风口连通连接的第一段、及与所述第一段连通的第二段，所述第一段包括第一吹风口，所述第二段包括与所述第一段连通的进气开口及在轴向上位于所述进气开口前端的第二吹 风口；所述第一吹风口和所述进气开口之间具有供外部气流进入所述第二段内的间隙，所述动力件配置为高速电机，所述高速电机的转速为1.5万转/分钟～10万转/分钟。
在其中一优选的实施方式中，所述第一吹风口可操作的在轴向上移动，以形成所述第一吹风口相对的具有远离所述第二吹风口的第一位置及靠近所述第二吹风口的第二位置。
在其中一优选的实施方式中，所述第一段包括嵌套设置的第一子吹风管和第二子吹风管，所述第一子吹风管与所述出风口连通连接，所述第二子吹风管包括与外界连通的开口，所述开口形成所述第一段的第一吹风口，所述第二子吹风管相对于所述第一子吹风管可操作地沿轴向移动，以形成所述第一吹风口在所述第一位置和所述第二位置之间切换。
在其中一优选的实施方式中，所述第一吹风口处于所述第一位置，所述第一段和所述第二段在轴向上至少部分重叠。
在其中一优选的实施方式中，所述第一吹风口处于第一位置，自所述第二吹风口向外吹出有第一流速的气流，所述第一吹风口处于第二位置，自所述第二吹风口向外吹出有第二流速的气流，所述第一流速小于第二流速。
在其中一优选的实施方式中，所述第一吹风口处于第一位置，自所述第二吹风口向外吹出有第一流量的气流，所述第一吹风口处于第二位置，自所述第二吹风口向外吹出有第二流量的气流，所述第一流量大于所述第二流量。
在其中一优选的实施方式中，所述第一吹风口处于所述第二位置，所述第一吹风口临近所述第二吹风口或与所述第二吹风口相平齐或向外超出所述第二吹风口。
在其中一优选的实施方式中，所述第一吹风口出处于所述第一位置或者所述第二位置，所述第一子吹风管和所述第二子吹风管之间均没有间隙。
在其中一优选的实施方式中，所述第一段包括嵌套设置的第一子吹风管和第二子吹风管，所述第二子吹风管相对于所述第一子吹风管可操作地沿轴 向移动，以使所述第一段能够伸长或缩回，所述第一段在伸长时所述第一子吹风管与所述第二子吹风管之间具有供外界气流进入所述第二子吹风管内的间隙。
在其中一优选的实施方式中，所述第一吹风口处于所述第一位置或者所述第二位置，所述第二吹风口与所述出风口之间距离保持不变。
在其中一优选的实施方式中，所述第一段包括与所述出风口连接的第一子吹风管和与所述第一子吹风管可拆卸连接的第二子吹风管，所述吹风管具有去除所述第二子吹风管的第一使用状态以及安装有第二子吹风管的第二使用状态，在所述吹风管处于第一使用状态，所述第一子吹风管和所述第二段之间形成有供外界气流进入所述第二段内的间隙。
在其中一优选的实施方式中，所述进气开口的内孔截面面积与所述第一吹风口的内孔截面面积的比值为1.1～6之间。
在其中一优选的实施方式中，所述第一吹风口吹出的风速大于等于50m/s。
在其中一优选的实施方式中，所述第一吹风口直径为30mm-80mm。
在其中一优选的实施方式中，所述高速电机的转速为3万转/分钟～10万转/分钟。
在其中一优选的实施方式中，所述吹风工具具体包括花园吹风机或花园吹吸机。
在其中一优选的实施方式中，所述吹风工具为吹吸机，所述吹吸机还包括进风管，所述进风管的一端连接于所述进风口，所述吹吸机包括吹风模式和吸风模式，在吹风模式，外界气流自所述进风口流入，通过所述出风口流入所述吹风管，并自所述吹风管吹出。
在其中一优选的实施方式中，所述第二段与所述进风管固定连接。
在其中一优选的实施方式中，所述第一段与所述第二段之间通过连接件连接，所述第一段可操作的相对所述第二段转动以使所述连接件在封闭所述间隙的封闭位置或打开所述间隙的开放位置之间切换；或，所述第二段可操 作的相对所述第一段转动以使所述连接件在封闭所述间隙的封闭位置或打开所述间隙的开放位置之间切换。
在其中一优选的实施方式中，所述连接件包括至少两组连接所述第一段与所述第二段的连接筋板，所述每组连接筋板包括多个间隔设置的子筋板，所述其中一组连接筋板可相对另一组连接筋板转动以封闭或不封闭所述相邻子筋板之间的间隔。
在其中一优选的实施方式中，所述第二段可操作的相对所述第一段在轴向上移动以封闭或打开所述间隙。
本公开实施例提供的吹风工具，能够在在不改变吹风工具功率的前提下，改变吹风管吹出气流的流量和速度。
基于此，有必要提供一种吹风管，能够在不提高吹风工具功率的前提下提高风量。
本公开实施例解决现有技术问题所采用的技术方案是：一种吹风管，能够应用于花园吹风工具上，所述花园吹风工具包括设置有进风口和出风口的主机壳体，气流由所述进风口进入所述主机壳体内并从所述出风口流入所述吹风管，自所述吹风管向外吹出；
所述吹风管大致沿轴向延伸，其包括与所述出风口连通连接的第一段、及与所述第一段连通的第二段，所述第一段包括第一吹风口，第二段包括与第一段连通的进气开口及在轴向上位于所述进气开口前端的第二吹风口；所述第一吹风口和所述进气开口之间具有供外部气流进入所述第二段内的间隙，且所述第一吹风口可操作的在所述轴向上移动，所述第一吹风口相对的具有远离所述第二吹风口的第一位置及靠近所述第二吹风口的第二位置。
在其中一优选的实施方式中，所述第一段包括嵌套设置的第一子吹风管和第二子吹风管，所述第二子吹风管包括与外界连通的开口，所述开口形成所述第一段的第一吹风口，所述第二子吹风管相对于所述第一子吹风管可操作地沿轴向移动，以形成所述第一吹风口在所述第一位置和所述第二位置之 间切换。
在其中一优选的实施方式中，所述第一吹风口处于所述第一位置，所述第一段和所述第二段在轴向上至少部分重叠。
在其中一优选的实施方式中，所述第一吹风口处于第一位置，自所述第二吹风口向外吹出有第一流速的气流，所述第一吹风口处于第二位置，自所述第二吹风口向外吹出有第二流速的气流，所述第一流速小于第二流速。
在其中一优选的实施方式中，所述第一吹风口处于第一位置，自所述第二吹风口向外吹出有第一流量的气流，所述第一吹风口处于第二位置，自所述第二吹风口向外吹出有第二流量的气流，所述第一流量大于所述第二流量。
在其中一优选的实施方式中，所述第一吹风口处于所述第二位置，所述第一吹风口临近所述第二吹风口或与所述第二吹风口相平齐或向外超出所述第二吹风口。
在其中一优选的实施方式中，所述第一吹风口出处于所述第一位置或者所述第二位置，所述第一子吹风管和所述第二子吹风管之间均没有间隙。
在其中一优选的实施方式中，所述第一吹风口处于所述第二位置，所述第一子风管和第二子风管之间具有供外界气流进入所述第二子吹风管内的间隙。
在其中一优选的实施方式中，所述第一吹风口处于所述第一位置，所述第一子风管和所述第二子风管之间的间隙减小或封闭。
在其中一优选的实施方式中，所述第一段包括与所述出风口连接的第一子吹风管和与所述第一子吹风管可拆卸连接的第二子吹风管，所述吹风管具有去除所述第二子吹风管的第一使用状态以及安装有第二子吹风管的第二使用状态，在所述吹风管处于第一使用状态，所述第一子吹风管和所述第二段之间形成有供外界气流进入所述第二段内的间隙。
在其中一优选的实施方式中，所述进气开口的内孔截面尺寸与所述第一吹风口的内孔截面尺寸的比值为1.1～6之间。
基于此，有必要提供一种吹风工具，能够在不提高吹风工具功率的前提下提高风量。
本公开实施例解决现有技术问题所采用的技术方案是：一种吹风工具，包括设置有进风口和出风口的主机壳体、设于所述主机壳体内的电机和由所述电机驱动的风扇，所述吹风工具还包括与出风口连通连接的吹风管，气流由所述进风口进入所述主机壳体内并从所述出风口流入所述吹风管；
所述吹风管包括至少三个依次连接的子吹风管，所述相邻子吹风管之间均具有供外界气流进入的间隙，所述电机为高速电机，所述电机的转速为1.5万-10万转/分。
在其中一优选的实施方式中，相邻所述子吹风管可相对移动地连接以形成伸缩式的所述吹风管，且所述吹风管在伸长时相邻所述子吹风管之间具有间隙以供外界气流进入。
在其中一优选的实施方式中，所述吹风管在缩回时相邻所述子吹风管之间间隙减小或封闭以阻止或减小外界气流进入。
在其中一优选的实施方式中，所述吹风管的所述子吹风管包括依次设置的第一子吹风管、第二子吹风管、第三子吹风管和第四子吹风管，所述第二子吹风管可移动地连接于所述第一子吹风管，所述第三子吹风管可移动地连接于所述第二子吹风管，所述第四子吹风管可移动地连接于所述第三子吹风管。
在其中一优选的实施方式中，所述吹风管伸出时，所述第一子吹风管和所述第二吹风管之间、所述第二子吹风管与所述第三子吹风管之间以及所述第三子吹风管与所述第四子吹风管具有间隙。
在其中一优选的实施方式中，所述第四子吹风管的出风口的截面积大于所述第三子吹风管的出风口的截面积，所述第三子吹风管的出风口的截面积大于所述第二子吹风管的出风口的截面积。
在其中一优选的实施方式中，所述吹风管缩回时，所述第一子吹风管至 少部分与所述第二子吹风管重叠套接，所述第二子吹风管至少部分与所述第三子吹风管重叠套接，所述第三子吹风管至少部分与所述第四子吹风管重叠套接。
在其中一优选的实施方式中，所述高速电机的转速为3万转/分钟～15万转/分钟。
在其中一优选的实施方式中，所述吹风工具还包括进风管，所述进风管的一端连接于所述进风口。
在其中一优选的实施方式中，所述风扇连接于所述电机的输出轴，且所述风扇面向所述进风口并与所述出风口相邻。
本公开实施例的吹风工具，由于吹风管具有可伸缩的套接的多级子吹风管，吹风管伸出时，相邻的子吹风管之间具有间隙以供外界气流进入，从而提高吹风管吹出的风量，当吹风管缩回时，相邻子吹风管之间的间隙减小或封闭，以减小外界气流的流入，从而保证吹风管的吹出的风速。
附图说明
图1为本发明第一实施例的吹风工具的吹风管处于缩回状态结构示意图；
图2为图1所示吹风工具的出风管处于伸出状态结构示意图。
图3为本发明第二实施例的吹风工具的吹风管处于伸出状态结构示意图；
图4为图3所示吹风工具的吹风管处于缩回状态的结构示意图。
图5为本发明第三实施例的吹风工具的吹风管处于缩回状态结构示意图
图6为图5所示吹风工具的吹风管处于伸出状态的结构示意图。
图7(a，b)为另一实施方式提供的吹风工具的吹风管剖面结构示意图。
具体实施方式
为了便于理解本发明，下面将参照相关附图对本发明进行更全面的描述。附图中给出了本发明的较佳实施例。但是，本发明可以以许多不同的形式来实现，并不限于本文所描述的实施例。相反地，提供这些实施例的目的是使对本发明的公开内容的理解更加透彻全面。
需要说明的是，当元件被称为“固定于”另一个元件，它可以直接在另一个元件上或者也可以存在两者之间的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在两者之间的元件。
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本发明。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
请参阅图1和图2，本发明第一实施例的吹风工具，包括主机壳体12、设于主机壳体12内的动力件14、由动力件14驱动的风扇16和连接于主机壳体12的吹风管18。主机壳体12包括贯通的进风口122和出风口124，气流由进风口122进入主机壳体12内并从出风口124流入吹风管18，并自吹风管18向外吹出。吹风管18大致沿轴向延伸，其包括与出风口124连通连接的第一段上、及与第一段连通的第二段，第一段包括供气流吹出的第一吹风口以及与所述出风口124连接的第一进风口182，气流由第一进风口182流入，然后从第一吹风口流出，第二段包括与第一段连通的进气开口及在轴向上位于进气开口前端的第二吹风口184，气流自第一吹风口流出后，流入进气开口，并从第二吹风口184吹出。所述第一吹风口和进气开口之间具有供外部气流进入所述第二段内的间隙，且在所述轴向上，所述第一吹风口可操作的在轴向上移动，所述第一吹风口具有远离所述第二吹风口的第一位置及靠近所述第二吹风口的第二位置。
具体的，第一吹风口处于第一位置，自所述第二吹风口184向外吹出有第一流速的气流，第一吹风口处于第二位置，自第二吹风口184向外吹出有第二流速的气流，第一流速小于第二流速。第一吹风口处于第一位置，自第二吹风口184向外吹出有第一流量的气流，第一吹风口处于第二位置，自第二吹风口184向外吹出有第二流量的气流，第一流量大于第二流量。第一位置和第二位置均是可调的，第一吹风口可释放的被锁定在多个第一位置和第 二位置处，通过第一吹风口在轴向上移动，使得第一吹风口在距离第二吹风口在多个第一位置和多个第二位置变换，调节经由第一吹风口与进气开口之间的间隙处的进风风量，从而改变由吹风管吹出的风量和风速。
本实施例中，第一进风口182和第二吹风口184相互贯通，吹风管18通过第一进风口182连接于主机壳体12的出风口124处，且第一进风口182与出风口124连通。第一吹风口处于所述第一位置或者所述第二位置，所述第二吹风口184与所述出风口124之间距离保持不变。
吹风工具具体为花园吹吸机，花园吹吸机具有吹模式和吸模式，在吹模式下，气流由进风口122进入主机壳体12内并从出风口124流入吹风管18，本实施例所说的吹风管18的工作状态，均是在吹模式下进行说明的。当然，吹风工具还可以是花园吹风机，花园吹风机包括设置有进风口和出风口的主机壳体，吹风管连接于出风口上，工作过程中，气流由进风口流入，经过出风口流向吹风管，并自吹风管向外吹出。
本实施例中，第一段和第二段之间具有间隙以供外界气流进入，且内孔截面面积较小的第一段相对内孔截面面积较大的第二段较靠近第一进风口182。第一吹风口可操作的在轴向上移动，使得第一吹风口与第一进风口182之间距离可调，使第一段的长度能够可操作的延长，且第一段能够伸入所述第二段中，当第一段的长度延长时，第一段伸入第二段的轴向距离增大。具体的，第一吹风口与所述第一进风口182之间的轴向距离可调节，使所述第一段的长度改变，当第一段的长度延长时，第一吹风口在轴向上更靠近所述第二吹风口184，第一段伸入第二段的轴向距离增大，从而改变第一段与第二段在其轴向上的重叠距离，以调节吹风过程中第一段与第二段的间隙处的进风量。
在另一实施方式中，第一段可操作相对第二段的转动以封闭或打开间隙；或，第二段可相对所述第一段可操作的转动以封闭或打开所述间隙。请参照图7，第一段与第二段之间通过连接件可转动的连接，所述第一段可操作的相 对所述第二段转动以使所述连接件在封闭所述间隙的封闭位置或打开所述间隙的开放位置之间切换；或，所述第二段可操作的相对所述第一段转动以使所述连接件在封闭所述间隙的封闭位置或打开所述间隙的开放位置之间切换。具体的，连接件包括至少两组连接所述第一段与所述第二段的连接筋板1811，1812，所述每组连接筋板包括多个间隔设置的子筋板，所述其中一组连接筋板可相对另一组连接筋板转动以封闭或不封闭所述相邻子筋板之间的间隔。更具体的，所述连接筋板1811、1812分别与第一段和第二段连接，每一组连接筋板包括多个筋板，所述每一组的多个筋板1811(1812)均匀间隔分布。图7(b)示出连接筋板1811与1812重叠设置，第一段与第二段之间具有间隙，顺时针转动第二段，得到图7(a)所示的状态，第一段与第二段之间的间隙被封闭，气流不能从第一段与第二段之间的间隙进入吹风管18。更具体的，所述连接筋板1811、1812分别与所述第一子吹风管186和第三子吹风管188连接，图7(a)示出连接筋板1811与1812重叠设置，第一子吹风管186与第三子吹风管188之间具有间隙，顺时针转动第三子吹风管188，请参照图7a，连接筋板1812顺时针转动至相邻的两个连接筋板1811之间，以封闭相邻连接筋板1811之间的间隙，从而第一段与第二段之间的间隙被或封闭。可以理解的，此处所说的封闭并非绝对意义上的空气封闭，可以容许很小的间隙，但几乎不影响气流在风管中的流动。优选的，连接筋板为扇形板或弧形板。可以理解的，第一段与第二段之间并非局限于第二段相对第一段转动，也可以将第一段设置成可相对第二段旋转，只要其能够封闭或打开所述间隙即可。
在另一实施方式中，第二段可操作的相对所述第一段在轴向上移动以封闭或打开所述间隙。具体的，第一段与第二段之间通过连接件可移动的连接，连接件具体包括至少两组固定连接第一段与第二段的连接筋板，每组连接筋板的相邻筋板间隔设置，相邻筋板之间具有间隙，两组连接筋板间隔分布，使得风管径向上360度覆盖连接筋板。两组连接筋板在轴向上具有相互靠近的封闭位置和相互远离的开放位置，在封闭位置，两组连接筋板相互接触以 封闭所述间隙，在开放位置，两组连接筋板之间具有轴向距离，从而每组连接筋板的相邻筋板之间具有空隙，上述空隙供外界气流流入。
本实施例中，第一段包括嵌套设置的第一子吹风管186、第二子吹风管187，所述第二子吹风管187可移动地套设于所述第一子吹风管186上，第二子吹风管187相对第一子吹风管186能够在伸出位置和缩回位置之间移动，使所述第一段能够伸长或缩回，进而使第一吹风口在靠近所述第二吹风口184的第二位置及远离所述第二吹风口184的第一位置之间移动。当所述第二子吹风管187位于所述伸出位置时，所述第一吹风口位于第二位置，当所述第二子吹风管187位于所述缩回位置时，所述第一吹风口位于第一位置，当所述第二子吹风管187位于伸出位置，所述第一段伸入所述第二段的轴向距离大于所述第二子吹风管位于所述缩回位置时的所述第一段伸入所述第二段的轴向距离，也就是说，当第二子吹风管187位于所述伸出位置时的所述第一段与所述第二段在轴向上的重叠距离大于第二子吹风管187位于所述缩回位置时的上述重叠距离。
此外，吹风管18具有安装有第二子吹风管187的第二使用状态及去除所述第二子吹风管187的第一使用状态，在所述吹风管18处于第一使用状态，所述第一子吹风管186和所述第二段之间形成有供外界气流进入所述第二段内的间隙，第一吹风口位于第一位置。在吹风管18处于第二使用状态，所述第二子吹风管187套设于所述第一子吹风管上，第一段的长度得到延长，第一出风口位于靠近所述第二吹风口184的第二位置，第一段伸入第二段的长度增大，从而第一段与第二段在轴向上的重叠距离增大，吹风过程中，通过第一段与所述第二段的间隙流入的气流流量减小。
在本实施例中，在所述第二子吹风管位于伸出位置或缩回位置时，所述第一子风管和所述第二子风管之间都没有间隙，外界气流不能从所述第一段进入所述吹风管。也就是说，在第一吹风口位于第一位置或第二位置，所述第一子风管和所述第二子风管之间都没有间隙，外界气流不能从所述第一段 进入所述吹风管。在另一优选的实施方式中，第二子吹风管位于伸出位置时，也就是第一吹风口位于第二位置，第一子风管186和第二子风管187之间具有间隙以供外界气流流入。在第二子吹风管位于所述缩回位置时，也就是第一吹风口位于第一位置，第一子风管和第二子风管之间的间隙减小或封闭以减少或阻止外界气流进入。也就是说，第二子吹风管相对于第一子吹风管可操作地沿轴向移动，以使第一段能够伸长或缩回，第一段在伸长时所述第一子吹风管与所述第二子吹风管之间具有供外界气流进入所述第二子吹风管内的间隙。
为了描述方便，定义当第二子吹风管187移动至缩回位置时，所述吹风管处于第一使用状态，当第二子吹风管187移动至伸出位置时，所述吹风管处于第二使用状态。相应的，当第一段包括可拆卸连接的第一子风管186和第二子风管187，当第二子风管187连接至第一子吹风管186，所述吹风管处于第二使用状态，当第二子风管187从第一子吹风管186拆下，所述吹风管处于第一使用状态，在所述吹风管处于第一使用状态，第一子吹风管和所述第二段之间形成有供外界气流进入所述第二段内的间隙。
如上所述，吹风管18包括第一使用状态和第一使用状态，第一使用状态下，第一段和第二段之间具有间隙以供外界气流进入，且内孔截面面积较小的第一段相对内孔截面面积较大的第二段较靠近进风口122，第一段伸入第二段的距离较小或没有伸入，即第一段与第二段的轴向重叠距离较小或没有重叠距离；第二使用状态下，第一吹风口位于靠近第二吹风口184的第二位置，第一段的长度延长，第一段与第二段的之间在轴向上的重叠距离大于吹风管处于第一使用状态下的上述重叠距离。重叠距离具体是指，第一吹风口位于第二段进气开口的前方，在轴向上，第一吹风口与进气开口之间的轴向距离。本实施例中，第一吹风口处于第一位置，第一段和所述第二段在轴向上至少部分重叠，也就是说，第一段与第二段在轴向上的重叠距离大于零。
可以理解，第二子吹风管的各处孔径一般相同或有少许差异，也可沿离 出风口124由近到远的距离增加或减小，根据实际需要的风速确定，且一般第二子吹风管内无外界气流进入，也可有少许外界气流进入。可以理解，吹风管18可为圆形、方形、椭圆形等各种形状，只需其截面面积满足上述孔径关系即可。可以理解，第一段和第二段的截面面积也可有改变，只要整体上第一段的内孔截面面积小于第二段的内孔截面面积即可，或者第一段的与第二段的相接处内孔截面面积小于第二段远离第一段的一端的内孔截面面积即可。
本吹风工具中，由于吹风管18包括具两种不同内孔截面面积的第一使用状态和第一使用状态，第一使用状态下，吹风时，旋转风扇使气流从进风口122进入主机壳体12，并经出风口124和第一进风口182进入吹风管18，且旋转风扇使气流形成负压，使外界的气流可从间隙进入吹风管18，与从进风口122进入吹风管18的原有气流一起从第二吹风口184吹出，这样可在不提高动力件14的功率的前提下，增加吹风工具的总风量。这样，即使面对更为复杂的工况，本吹风工具也可在不提高动力件14功率的前提下完成工作。
本实施例中，动力件14为电机，电机可由电池包供电也可由外部电源供电。具体在本实施例中，动力件14由外部电源供电，主机壳体12上连接有与外部电源电连接的线缆126。在另一实施例中，动力件14也可为液压马达。
本实施例中，动力件14为电机，其转速为5000转/分钟～15000转/分钟。
在其他实施方式中，电机为高速电机，高速电机的转速为1.5万转/分钟～10万转/分钟。优选的，高速电机的转速为3万转/分钟～10万转/分钟，或高速电机的转速为3万转/分钟～8万转/分钟，3万转/分钟～6万转/分钟。
本实施例中，风扇16连接于动力件14的输出轴，且风扇16面向进风口122并与出风口124相邻。风扇16直径范围为30mm-80mm，较小的风扇直径所需要的驱动扭矩更小，便于高速电机的驱动小直径的风扇高速旋转，以产生高速的吹出气流。在第一使用状态下，第一段与第二段之间具有间隙，工作过程中，外界气流从间隙处进入第二段，从而增大了吹风管的吹出风量， 但气流的流速势必降低，采用高速电机配小直径风扇，能够大幅度提高气流流速，在气流流量增大后，气流流速降低后的流量仍然保持较高的流速，因此，能够在保持一定流速的前提下，提高出风的风量，从而提高吹风效率。本实施例中，第一吹风口吹出的风速大于等于50m/s。
本实施例中，第二子吹风管187的气流出口形成上述第一吹风口，第二吹风管187的第一吹风口的内孔截面面积等于或小于所述第一子吹风管186的气流出口的内孔截面面积。这样，在第二使用状态下，由于第一吹风口内孔截面面积较小，从进风口122进入的风从吹风管18吹出可实现高风速，满足不同的工况需求。具体的，所述第一出风口直径为30mm-80mm。
本实施例中，吹风管18还包括第三子吹风管188，所述第三子吹风管188形成所述第二段，第三子吹风管188的内孔截面面积大于第一子吹风管186的内孔截面面积，第一子吹风管186连接于出风口124。
本实施例中，吹风工具还包括进风管19，进风管19的一端连接于进风口122，用于在吹风时将气流吸入吹风工具内。具体地，进风管19远离进风口122的一端朝背向吹风管18的一侧倾斜设置。
在其中一实施例中，第三子吹风管188与进风管19固定连接，第一子吹风管186与主机壳体12固定连接，第一使用状态下，第二子吹风管187在轴向上向吹风管18的第二吹风口184方向移动，使得第二子吹风管187的管口可移动至临近第二吹风口184设置或与第二吹风口184相平齐设置或超出出风口187。如此设计，一方面，使得气流通过截面积较小的口流出，从而增强风速；另一方面，通过移动第二子吹风管187来改变风速，可使得吹风管18的第二吹风口184与工作平面的距离保持一定，因而，不会影响吹风效果。
在其中一实施例中，第二子吹风管187可移动地套设于第一子吹风管186，第一使用状态下，第二子吹风管187与第一子吹风管186至少部分重叠套设。可以理解，在另一实施例中，第二子吹风管187可拆卸地套设于第一子吹风管186，第一使用状态下，第二子吹风管187从第一子吹风管186上拆除，气 流同样从第一子吹风管186进入第三子吹风管188，且第一子吹风管186和第三子吹风管188之间的间隙有气流进入，以提高风量。可以理解，第二子吹风管187的孔径为套设于第一子吹风管186外或第一子吹风管186内，因此第二子吹风管187和第二子吹风管186的孔径有稍许差异，但差异较小，在此可忽略，视为第一使用状态下吹风管18的各部分孔径是不变。进一步地，为消除这种差异，可于第二子吹风管187设计成两段式，一段孔径稍大，一段孔径稍小，孔径稍大的部分可套设于第一子吹风管186外，孔径稍小的部分位于第二子吹风管187远离第一进风口182的一端。
本实施例中，第三子吹风管188的内孔截面面积与第一子吹风管186的内孔截面面积的比值为1.2～6之间。具体地，第三子吹风管188为圆管，其内孔直径为50mm～500mm。
本实施例中，吹风管18的出风量与第三子吹风管188的内孔截面面积和第一子吹风管186的内孔截面面积之差的比值小于10cfm/mm 2。具体请看下表1，经过实验所测，吹风管18的出风量与大小管面积之差的比值处于小于10cfm/mm 2的范围内。表1中，出风管插入大管60mm表示第二子吹风管187伸入第三子吹风管188的长度为60mm的工况，出风管插入大管30mm表示第二子吹风管187伸入第三子吹风管188的长度为30mm的工况，出风管与大管齐平表示第一使用状态的工况，即第二子吹风管187完全套设在第一子吹风管186上。
表1不同工况下吹风管的出风量与大小管面积差值的比值
Figure PCTCN2018095834-appb-000001
本实施例中，吹风工具还包括设于主机壳体12上的手柄20，以方便握持吹风工具。
本吹风工具在面对较复杂的工况需要较大风量时，调节吹风管18至第一 使用状态，旋转风扇使气流从进风口122进入主机壳体12，并经出风口124和第一进风口182进入吹风管18，且旋转风扇使气流形成负压，使外界的气流可从间隙进入吹风管18，与吹风管18内的原有气流一起从第二吹风口184吹出，这样可在不提高动力件14的功率的前提下，增加吹风工具的总风量。当需要较大风速时，可伸出第二子吹风管187，一方面，使得气流通过截面积较小的口流出，从而增强风速；另一方面，通过移动第二子吹风管187来改变风速，可使得吹风管18的第二吹风口184与工作平面的距离保持一定，因而，不会影响吹风效果。可以理解，吹风工具可以为花园吹风机或者花园吹吸机。
本发明还提供一种吹风管，本实施例所提供的吹风管与上述吹风工具中的吹风管具有相同的结构和工作状态。具体的，吹风管18包括贯通的第一进风口182和第二吹风口184，第一进风口182与出风口124连通。吹风管18包括第一使用状态和第一使用状态，第一使用状态下，吹风管18包括依次设置且相互连通的第一段和第二段，第一段和第二段之间具有间隙以供外界气流进入，且内孔截面面积较小的第一段相对内孔截面面积较大的第二段较靠近第一进风口182；第一使用状态下，吹风管18包括第二子吹风管。可以理解，第二子吹风管的各处孔径一般相同或有少许差异，也可沿离出风口124由近到远的距离增加或减小，根据实际需要的风速确定，且一般第二子吹风管内无外界气流进入，也可有少许外界气流进入。可以理解，吹风管18可为圆形、方形、椭圆形等各种形状，只需其截面面积满足上述孔径关系即可。可以理解，第一段和第二段的截面面积也可有改变，只要整体上第一段的内孔截面面积小于第二段的内孔截面面积即可，或者第一段的与第二段的相接处内孔截面面积小于第二段远离第一段的一端的内孔截面面积即可。
由于吹风管18包括具两种不同内孔截面面积的第一使用状态和第一使用状态，第一使用状态下，吹风时，旋转风扇使气流从进风口122进入主机壳体12，并经出风口124和第一进风口182进入吹风管18，且旋转风扇使气流 形成负压，使外界的气流可从间隙进入吹风管18，与从进风口122进入吹风管18的原有气流一起从第二吹风口184吹出，这样可在不提高动力件14的功率的前提下，增加吹风工具的总风量。这样，即使面对更为复杂的工况，本吹风工具也可在不提高动力件14功率的前提下完成工作。
本实施例中，第一使用状态下的吹风管18的第二子吹风管的内孔截面面积等于或小于第一使用状态下第一段的内孔截面面积。这样，在第一使用状态下，由于内孔截面面积较小，从进风口122进入的风从吹风管18吹出可实现高风速，满足不同的工况需求。
本实施例中，吹风管18包括第一子吹风管186、第二子吹风管187和第三子吹风管188，第三子吹风管188的内孔截面面积大于第一子吹风管186的内孔截面面积，第一子吹风管186连接于出风口124。第一使用状态下，第一子吹风管186形成上述第一段，第三子吹风管188形成上述第二段；第一使用状态下，第二子吹风管186套设于第三子吹风管188内，并与第一子吹风管186连接。
在其中一实施例中，第二子吹风管187可移动地套设于第一子吹风管186，第一使用状态下，第二子吹风管187与第一子吹风管186至少部分重叠套设。可以理解，在另一实施例中，第二子吹风管187可拆卸地套设于第一子吹风管186，第一使用状态下，第二子吹风管187从第一子吹风管186上拆除，气流同样从第一子吹风管186进入第三子吹风管188，且第一子吹风管186和第三子吹风管188之间的间隙有气流进入，以提高风量。可以理解，第二子吹风管187的孔径为套设于第一子吹风管186外或第一子吹风管186内，因此第二子吹风管187和第二子吹风管186的孔径有稍许差异，但差异较小，在此可忽略，视为第一使用状态下吹风管18的各部分孔径是不变。进一步地，为消除这种差异，可于第二子吹风管187设计成两段式，一段孔径稍大，一段孔径稍小，孔径稍大的部分可套设于第一子吹风管186外，孔径稍小的部分位于第二子吹风管187远离第一进风口182的一端。
本实施例中，第三子吹风管188的内孔截面面积与第一子吹风管186的内孔截面面积的比值为1.1～6之间。具体地，第三子吹风管188为圆管，其内孔直径为50mm～500mm。
本实施例中，吹风管18的出风量与第三子吹风管188的内孔截面面积和第一子吹风管186的内孔截面面积之差的比值小于10cfm/mm 2。
图3和图4示出了本发明第二实施方式，本发明另一实施例的吹风工具包括主机壳体12、设于主机壳体12内的电机14、由电机14驱动的风扇16和连接于主机壳体12的吹风管18。主机壳体12包括贯通的进风口122和出风口124。电机14为高速电机。吹风管18包括贯通的第一进风口182和第二吹风口184，第一进风口182与主机壳体12的出风口124连通，吹风管18包括至少三个依次连接的子吹风管，第二吹风口184的截面积大于第一进风口182的截面积，相邻子吹风管可相对移动地连接以形成伸缩式的吹风管18，且吹风管18在伸长时相邻子吹风管之间具有间隙以供外界气流进入，吹风管18在缩回时相邻子吹风管之间的间隙减小或封闭以减少或阻止外界气流进入。
本实施例中，开设第二吹风口184的子吹风管的各处截面积大于开设第一进风口182的子吹风管的出风口的截面积。当然，在其他实施例中，靠近第二吹风口184的子吹风管的截面积大于远离第二吹风口184的子吹风管的截面积。这里子吹风管的截面积是指子吹风管最大截面积，优选的，每个子吹风管各处截面积相同。
本吹风工具中，由于吹风管18可伸缩，且在吹风管18伸长时相邻子吹风管之间具有间隙，因此，吹风时，旋转风扇使气流从进风口122进入主机壳体12，并经出风口124和总第一进风口182进入吹风管18，且旋转风扇使气流形成负压，使外界的气流可从间隙进入吹风管18，与吹风管18内的原有气流一起从总第二吹风口184吹出，这样可在不提高电机14的功率的前提下，增加吹风工具的总风量。这样，即使面对更为复杂的工况，本吹风工具也可在不提高电机14功率的前提下完成工作。另外，由于电机14为高速电机， 单位体积的出功较大，因此可减小吹风工具的整机尺寸和重量。同时，吹风管18缩回时吹风管18长度缩短，风速损失较小，因此风速较大。
本实施例中，电机14可由电池包供电也可由外部电源供电。具体在本实施例中，电机14由外部电源供电，主机壳体12上连接有与外部电源电连接的线缆126。
本实施例中，本实施例中，高速电机的转速为1.5万转/分钟～10万转/分钟。优选的，高速电机的转速为3万转/分钟～10万转/分钟，或高速电机的转速为3万转/分钟～8万转/分钟，3万转/分钟～6万转/分钟。
本实施例中，风扇16连接于电机14的输出轴，且风扇16面向进风口122并与出风口124相邻。
本实施例中，吹风管18的子吹风管包括依次设置的第一子吹风管186、第二子吹风管187、第三子吹风管188和第四子吹风管189，第一子吹风管186连接于出风口124，第二子吹风管187可移动地连接于第一子吹风管186，第三子吹风管188可移动地连接于第二子吹风管187，第四子吹风管189可移动地连接于第三子吹风管188。
具体地，伸出时，第一子吹风管186和第二吹风管187之间、第二子吹风管187与第三子吹风管188之间以及第三子吹风管188与第四子吹风管189具有间隙。这样，分三级逐级增大风量，进一步提高吹风工具的工作效率。
具体地，第四子吹风管189的出风口的截面积大于第三子吹风管188的出风口的截面积，第三子吹风管188的出风口的截面积大于第二子吹风管187的出风口的截面积。第二子吹风管187的出风口的截面积等于第一子吹风管186的出风口的截面积，当然，第二子吹风管187的出风口的截面积也可大于第一子吹风管186的出风口的截面积。可以理解，各子吹风管的出风口的截面积大小也可为其他关系，只要第四子吹风管189的出风口的截面积大于第一子吹风管186的出风口的截面积即可。
具体地，吹风管18缩回时，第一子吹风管186至少部分与第二子吹风管 187重叠套接，第二子吹风管187至少部分与第三子吹风管188重叠套接，第三子吹风管188至少部分与第四子吹风管189重叠套接。
本实施例中，相邻的两个子吹风管上均设有挡圈，两个相邻子吹风管的挡圈可相互错开或配合，以使两个相邻子吹风管之间具有间隙或封闭。
本实施例中，吹风工具还包括进风管19，进风管19的一端连接于进风口122，以在吹风时将气流吸入吹风工具内。具体地，进风管19远离进风口122的一端朝背向吹风管18的一侧倾斜设置。
本实施例中，吹风工具还包括设于主机壳体12上的手柄20，以方便握持吹风工具。
本吹风工具在面对较复杂的工况需要较大风量时，可伸长吹风管18，旋转风扇使气流从进风口122进入主机壳体12，并经出风口124和总第一进风口182进入吹风管18，且旋转风扇使气流形成负压，使外界的气流可从间隙进入吹风管18，与吹风管18内的原有气流一起从总第二吹风口184吹出，这样可在不提高电机14的功率的前提下，增加吹风工具的总风量。当需要较大风速时，可缩回吹风管18，由于吹风管18截面积较小，因此在不改变电机14的功率的情况下具有较大风速，且缩回时吹风管18长度缩短，风速损失较小，因此风速较大。
当然，上述实施例中吹风管不仅可以应用于吹风机上，也可以应用于吹吸机上。
图5和图6示出了本发明第三实施方式，本实施例所提供的吹风工具的吹风管与第一实施例所提供的吹风管结构类似，区别仅在于本实施例提供的吹风工具为花园吹风机，和由此带来的吹风管的连接关系改变，本实施例仅对不同之处进行说明。
本实施例中吹风工具具体为花园吹风机，包括主机壳体121、设于主机壳体121内的电机141、由电机141驱动的风扇161和连接于主机壳体121的吹风管181，吹风机还包括用于握持的手柄201。主机壳体121包括贯通的进风 口1221和出风口1241。电机141为高速电机。吹风管18包括贯通的第一进风口1821和第二吹风口1841，第一进风口1821与主机壳体121的出风口1241连通。气流由进风口1221进入主机壳体121内并从出风口1241流入吹风管181，并自吹风管181向外吹出。吹风管181大致沿轴向延伸，其包括与出风口1241连通连接的第一段上、及与第一段连通的第二段，第一段包括供气流吹出的第一吹风口以及与所述出风口1241连接的第一进风口1821，气流由第一进风口1821流入，然后从第一吹风口流出，第二段包括与第一段连通的进气开口及在轴向上位于进气开口前端的第二吹风口1841，气流自第一吹风口流出后，流入进气开口，并从第二吹风口184吹出。
本实施例中，第一段包括嵌套设置的第一子吹风管1861、第二子吹风管1871，所述第二子吹风管1871可移动地套设于所述第一子吹风管1861上，第二子吹风管1871相对第一子吹风管1861能够在伸出位置和缩回位置之间移动，以使第一吹风口在靠近所述第二吹风口1841的第二位置及远离所述第二吹风口1841的第一位置之间移动。当第二子吹风管1871位于所述伸出位置时，所述第一吹风口位于第二位置，当所述第二子吹风管1871位于所述缩回位置时，所述第一吹风口位于第一位置，当所述第二子吹风管1871位于伸出位置，所述第一段伸入所述第二段的轴向距离大于所述第二子吹风管位于所述缩回位置时的所述第一段伸入所述第二段的轴向距离，也就是说，当第二子吹风管187位于所述伸出位置时的所述第一段与所述第二段在轴向上的重叠距离大于第二子吹风管187位于所述缩回位置时的上述重叠距离。
此外，吹风管181具有安装有第二子吹风管1871的第二使用状态及去除所述第二子吹风管1871的第一使用状态，在所述吹风管181处于第一使用状态，所述第一子吹风管1861和所述第二段之间形成有供外界气流进入所述第二段内的间隙，第一吹风口位于第一位置。在吹风管181处于第二使用状态，所述第二子吹风管1871套设于所述第一子吹风管上，第一段的长度得到延长，第一出风口位于靠近所述第二吹风口1841的第二位置，第一段伸入第二段的 长度增大，从而第一段与第二段在轴向上的重叠距离增大，吹风过程中，通过第一段与所述第二段的间隙流入的气流流量减小。
本实施例中，所述第二吹风口1841与所述出风口1241之间的距离保持不变。吹风管还包括连接所述第一段与所述第二段的连接件，使第二吹风口与所述出风口的轴向距离保持不变。具体的，所述第二段包括第三子吹风管1881，吹风管181还包括连接第一子吹风管1861和第三子吹风管1881的连接件1810。所述第三子吹风管1881与第一子吹风管1861通过连接件1810固定连接，连接件1810与所述第三子吹风管1881之间具有空隙，以供外界气流从该空隙进入所述第三子吹风管1881。连接件1810起支撑第三子吹风管1881的作用，使第三子吹风管的第二吹风口1841保持与出风口1241的距离不变，从而第一吹风口在第一位置或第二位置，都能够保持风管第二吹风口与地面的距离保持恒定，便于吹风工作。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (23)

  1. 一种吹风工具，包括主机壳体、设于所述主机壳体内的动力件和由所述动力件驱动的风扇，所述吹风工具还包括吹风管，所述主机壳体设置有进风口和出风口，气流由所述进风口进入所述主机壳体内并从所述出风口流入所述吹风管，自所述吹风管向外吹出；
    其特征在于，所述吹风管大致沿轴向延伸，其包括与所述出风口连通连接的第一段、及与所述第一段连通的第二段，所述第一段包括第一吹风口，所述第二段包括与所述第一段连通的进气开口及在轴向上位于所述进气开口前端的第二吹风口；所述第一吹风口和所述进气开口之间具有供外部气流进入所述第二段内的间隙，所述动力件配置为高速电机，所述高速电机的转速为1.5万转/分钟～10万转/分钟。
  2. 根据权利要求1所述的吹风工具，其特征在于，所述第一吹风口可操作的在轴向上移动，以形成所述第一吹风口相对的具有远离所述第二吹风口的第一位置及靠近所述第二吹风口的第二位置。
  3. 根据权利要求2所述的吹风工具，其特征在于，所述第一段包括嵌套设置的第一子吹风管和第二子吹风管，所述第一子吹风管与所述出风口连通连接，所述第二子吹风管包括与外界连通的开口，所述开口形成所述第一段的第一吹风口，所述第二子吹风管相对于所述第一子吹风管可操作地沿轴向移动，以形成所述第一吹风口在所述第一位置和所述第二位置之间切换。
  4. 根据权利要求2所述的吹风工具，其特征在于，所述第一吹风口处于所述第一位置，所述第一段和所述第二段在轴向上至少部分重叠。
  5. 根据权利要求2所述的吹风工具，其特征在于，所述第一吹风口处于第一位置，自所述第二吹风口向外吹出有第一流速的气流，所述第一吹风口处于第二位置，自所述第二吹风口向外吹出有第二流速的气流，所述第一流速小于第二流速。
  6. 根据权利要求2所述的吹风工具，其特征在于，所述第一吹风口处于第一位置，自所述第二吹风口向外吹出有第一流量的气流，所述第一吹风口处于第二位置，自所述第二吹风口向外吹出有第二流量的气流，所述第一流量大于 所述第二流量。
  7. 根据权利要求2所述的吹风工具，其特征在于，所述第一吹风口处于所述第二位置，所述第一吹风口临近所述第二吹风口或与所述第二吹风口相平齐或向外超出所述第二吹风口。
  8. 根据权利要求3所述的吹风工具，其特征在于，所述第一吹风口出处于所述第一位置或者所述第二位置，所述第一子吹风管和所述第二子吹风管之间均没有间隙。
  9. 根据权利要求1所述的吹风工具，其特征在于，所述第一段包括嵌套设置的第一子吹风管和第二子吹风管，所述第二子吹风管相对于所述第一子吹风管可操作地沿轴向移动，以使所述第一段能够伸长或缩回，所述第一段在伸长时所述第一子吹风管与所述第二子吹风管之间具有供外界气流进入所述第二子吹风管内的间隙。
  10. 根据权利要求2所述的吹风工具，其特征在于，所述第一吹风口处于所述第一位置或者所述第二位置，所述第二吹风口与所述出风口之间距离保持不变。
  11. 根据权利要求1所述的吹风工具，其特征在于，所述第一段包括与所述出风口连接的第一子吹风管和与所述第一子吹风管可拆卸连接的第二子吹风管，所述吹风管具有去除所述第二子吹风管的第一使用状态以及安装有第二子吹风管的第二使用状态，在所述吹风管处于第一使用状态，所述第一子吹风管和所述第二段之间形成有供外界气流进入所述第二段内的间隙。
  12. 根据权利要求1所述的吹风工具，其特征在于，所述进气开口的内孔截面面积与所述第一吹风口的内孔截面面积的比值为1.1～6之间。
  13. 根据权利要求1所述的吹风工具，其特征在于，所述第一吹风口吹出的风速大于等于50m/s。
  14. 根据权利要求1所述的吹风工具，其特征在于，所述第一吹风口直径为30mm-80mm。
  15. 根据权利要求1所述的吹风工具，其特征在于，所述高速电机的转速为3万转/分钟～10万转/分钟。
  16. 根据权利要求1所述的吹风工具，其特征在于，所述吹风工具具体包括花园吹风机或花园吹吸机。
  17. 根据权利要求16所述的吹风工具，其特征在于，所述吹风工具为花园吹吸机，所述花园吹吸机还包括进风管，所述进风管的一端连接于所述进风口，所述花园吹吸机包括吹风模式和吸风模式，在吹风模式，外界气流自所述进风口流入，通过所述出风口流入所述吹风管，并自所述吹风管吹出。
  18. 根据权利要求17所述的吹风工具，其特征在于，所述第二段与所述进风管固定连接。
  19. 根据权利要求16所述的吹风工具，其特征在于，所述吹风工具为花园吹风机，所述吹风管还包括连接所述第一段与所述第二段的连接件。
  20. 根据权利要求19所述的吹风工具，其特征在于，所述第二吹风口与所述出风口的轴向距离保持不变。
  21. 根据权利要求1所述的吹风工具，其特征在于，所述第一段与所述第二段之间通过连接件连接，所述第一段可操作的相对所述第二段转动以使所述连接件在封闭所述间隙的封闭位置或打开所述间隙的开放位置之间切换；或，所述第二段可操作的相对所述第一段转动以使所述连接件在封闭所述间隙的封闭位置或打开所述间隙的开放位置之间切换。
  22. 根据权利要求21所述的吹风工具，其特征在于，所述连接件包括至少两组连接所述第一段与所述第二段的连接筋板，所述每组连接筋板包括多个间隔设置的子筋板，所述其中一组连接筋板可相对另一组连接筋板转动以封闭或不封闭所述相邻子筋板之间的间隔。
  23. 根据权利要求1所述的吹风工具，其特征在于，所述第二段可操作的相对所述第一段在轴向上移动以封闭或打开所述间隙。
PCT/CN2018/095834 2017-07-14 2018-07-16 吹风工具 WO2019011343A1 (zh)

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Publication number Priority date Publication date Assignee Title
US5121463A (en) * 1989-04-07 1992-06-09 Yoshihara & Co., Ltd. Hot air pulse generator for blowing out heated air in a pulse-like manner
CN102852108A (zh) * 2012-05-04 2013-01-02 江苏苏美达五金工具有限公司 具有辅气筒的手持式吹吸机
CN203452031U (zh) * 2013-03-29 2014-02-26 南京德朔实业有限公司 手持式吹风机
CN104912014A (zh) * 2014-03-10 2015-09-16 苏州宝时得电动工具有限公司 吹吸装置
CN207032127U (zh) * 2017-07-14 2018-02-23 苏州宝时得电动工具有限公司 电动工具及其吹风管
CN207244527U (zh) * 2017-07-14 2018-04-17 苏州宝时得电动工具有限公司 电动工具及其吹风管

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5121463A (en) * 1989-04-07 1992-06-09 Yoshihara & Co., Ltd. Hot air pulse generator for blowing out heated air in a pulse-like manner
CN102852108A (zh) * 2012-05-04 2013-01-02 江苏苏美达五金工具有限公司 具有辅气筒的手持式吹吸机
CN203452031U (zh) * 2013-03-29 2014-02-26 南京德朔实业有限公司 手持式吹风机
CN104912014A (zh) * 2014-03-10 2015-09-16 苏州宝时得电动工具有限公司 吹吸装置
CN207032127U (zh) * 2017-07-14 2018-02-23 苏州宝时得电动工具有限公司 电动工具及其吹风管
CN207244527U (zh) * 2017-07-14 2018-04-17 苏州宝时得电动工具有限公司 电动工具及其吹风管

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