CN104074155A - Handheld blower - Google Patents
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- CN104074155A CN104074155A CN201310108035.2A CN201310108035A CN104074155A CN 104074155 A CN104074155 A CN 104074155A CN 201310108035 A CN201310108035 A CN 201310108035A CN 104074155 A CN104074155 A CN 104074155A
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Abstract
The invention provides a handheld blower. The blower comprises a casing, a battery and a blow pipe, wherein an air inlet is formed in the casing, and a duct component is arranged on the casing and comprises a duct connected with the casing, a motor and a fan; the motor and the fan are mounted in the duct; the casing is connected to the blow pipe through the duct component; and the battery is mounted on the casing. The battery capacity of the handheld blower is more than 170wh. The battery capacity of the handheld DC(direct current) blower provided by the invention is larger, so that the demands for air quantity and working time of users can be met.
Description
Technical field
The present invention relates to a kind of garden type electric tool, particularly a kind of hand blower.
Background technology
Because direct current hand blower is mainly used in blowing near fallen leaves and small-sized rubbish ground, court and grandstand, obtain through experiment, in order to blow afloat the rubbish in a large amount of fallen leaves in ground and some cracks, conventionally need the air quantity of hair-dryer larger, in the market power brick is installed to hand-held DC blower on the housing limitation due to the aspect such as battery capacity is little and hair-dryer complete machine air-out efficiency is lower, cause hand-held blow fan delivery less, the working time is shorter.And the DC blower of backpack, because needs user bears battery, no matter from the convenience of operation or the angle of safety, all can not meet user's requirement.
Summary of the invention
The object of the present invention is to provide the larger hand blower of longer air quantity of a kind of working time.
For reaching above-mentioned purpose, the invention provides a kind of hand blower, comprise housing, battery and blower, on described housing, be provided with air intake He Yigehan road assembly, described letter road assembly comprises and is connected Han road with housing and is installed to motor and the fan in letter road, described housing is connected on blower by letter road assembly, and described battery is arranged on housing, and the battery capacity of described hand blower is greater than 170wh.
Further, the battery capacity of described hand blower is between 170wh-400wh.
Further, the air quantity of described hand blower between 430cfm-700cfm, and the working time be greater than 5min.
Further, described hand blower also comprises a handles, described handle comprises a grip part, a battery installation section and a speed governing portion, described holding area, between battery installation section and speed governing portion, is provided with the battery installation component for battery described in installation or removal in described battery installation section.
Further, described battery installation component comprises a battery snap close, button release with the interlock of described battery snap close, and described button release can drive battery snap close to separate with battery.
Further, described battery installation component also comprises an ejection head being arranged on housing, and described ejection head is connected with an elastic component, and can rotate with respect to housing.
Further, described fan is connected with motor, and described motor is brshless DC motor, and described fan is aerofoil fan, and the diameter of described brshless DC motor is not more than 35mm, and the external diameter of described aerofoil fan is between 85mm-140mm.
Further, the ratio of described hand-held blow fan delivery and brshless DC motor diameter is greater than 12cfm/mm.
Further, on described blower, define a central axis, be greater than the area of the flow cross section at air outlet position on blower near the flow cross section in the air channel at air intake position in the rear end of fan along the direction of axis, between described inner walls and fan hub, form a circulating face, the ratio on blower between the flow cross section at air outlet position and the flow cross section of fan present position circulating face is more than or equal to 0.8.
Further, described fan is to an outer contour of air channel definition of air outlet section, and the angle of described central axis and described outer contour is less than or equal to 8 degree.
The battery capacity of hand blower of the present invention is greater than 170wh, for hair-dryer provides enough energy, has extended service time and has improved air quantity simultaneously, and minimizing user changes the number of times of power brick, operates more convenient.
Brief description of the drawings
Fig. 1 is the perspective view of the hand blower in embodiment of the present invention;
Fig. 2 is that the hand blower in embodiment of the present invention removes the front view after partial shell;
Fig. 3 is the front view of the hand blower in embodiment of the present invention;
Fig. 4 is the top view of the hand blower in embodiment of the present invention;
Fig. 5 is the structural representation that the air intake He Yuhan road assembly of the hand blower in embodiment of the present invention connects;
Fig. 6 is the structural representation of the handle of the hand blower in embodiment of the present invention;
Fig. 7 is the sectional view of the hand blower Han road assembly in embodiment of the present invention;
Fig. 8 is that the hand blower Han road assembly in embodiment of the present invention removes the stereogram after part letter road and tube connector;
Fig. 9 is the curve of the hand blower fan blade external diameter in embodiment of the present invention and the efficiency function relation of drying.
Detailed description of the invention
In order to better understand technology contents of the present invention, especially exemplified by detailed description of the invention and coordinate appended illustrate as follows.
Please refer to Fig. 1 and Fig. 2, as the hand blower 10 of embodiment of the present invention, comprise housing 11, air intake box 12, handle 13, Control Component 14, battery 15, letter road assembly 17 and blower 19, wherein letter road assembly 17 and the battery 15 corresponding both sides that are positioned at housing 11 respectively, handle 13 is arranged on housing 11, housing 11 is connected with blower 19 by letter road assembly 17, and air intake box 12 is positioned at housing 11 inside.
Please also refer to Fig. 3, housing 11 includes container cavity 110, installation portion 111, main air inlet 112, auxiliary air intake 113, sidepiece air intake 114 and sweep 115, container cavity 110 is formed in housing 11, air intake box 12 is arranged in container cavity 110, and assembly 17 one end, letter road are fixedly mounted in installation portion 111.Main air inlet 112 and auxiliary air intake 113 are all arranged on the bottom of housing 11, sidepiece air intake 113 is arranged on the sidewall of housing 11, air-flow enters by main air inlet 112 or auxiliary air intake 113, after the guiding of sweep 115, flows into letter road assembly 17 from installation portion 111.Sidepiece air intake 114 has assists into wind action, can play better air inlet effect, certainly also can not need sidepiece air intake 114.
Please refer to Fig. 5, air intake box 12 includes bottom air inlet portion 120, inlet section, rear portion 121, sidepiece inlet section 122 and air outlet 123, wherein bottom air inlet portion 120 is rail shape structure with inlet section, rear portion 121, and a ramp structure corresponding with sweep 115 on housing 11 is arranged in inlet section, rear portion 121, the air intake (figure is mark not) of the air outlet 123Yu Han road assembly 17 of air intake box 12 connects, now air intake He12Yu Han road assembly 17 forms the unit 18 that can work independently, bottom air inlet portion 120 on air intake box, inlet section, rear portion 121, sidepiece inlet section 122 forms multiple blowing passages with air outlet 123 respectively, therefore no matter how housing 11 changes, as long as can work independently, unit 18 can pack in housing and form blowing passage, machine just can be realized blowing function.Can, in the situation that internal work unit is constant, change fast the external form of hand blower in this way.In embodiments of the present invention, main air inlet 112 on housing 11 has formed the first blowing passage together with the blowing bottom air inlet portion 120 of box 12 and air outlet 123, auxiliary air intake 113 on housing 11 has formed the second blowing passage together with the blowing inlet section, rear portion 121 of box 12 and air outlet 123, forms the 3rd blowing passage together with the sidepiece inlet section 122 of the sidepiece air intake 114 on housing and blowing box 12 and air outlet 123.
Please also refer to Fig. 1, Fig. 2, Fig. 4 and Fig. 6, handle 13 is for gripping hand blower 10, it is positioned at the top of housing 11 and battery 15 and is arranged on the sweep 115 of housing 11, handle 13 comprises grip part 130, battery installation section 131 and speed governing portion 132, and wherein grip part 130 is between battery installation section 131 and speed governing portion 132.
In embodiment of the present invention, on blower 19, alongst define an axis L 1, the center of gravity G of hair-dryer entirety is positioned in a plane P 1, and plane P 1 is vertical with the ground P2 of work, simultaneously parallel with axis L1.Housing 11, battery 15, letter road assembly 17 and blower 19 are roughly located along the same line, and the grip part 130 on handle 13 is distributed in the both sides of above-mentioned plane P 1, preferably grip part 130 symmetries are distributed in to plane P 1 both sides.Compact conformation like this, near centroidal distance grip part, has reduced and has in use overcome the power that hand blower deflection needs, and increases hand-held comfort level, reduces hand-held sense of fatigue in long-time use procedure.Battery can certainly be arranged on above or below housing 11, housing 11, letter road assembly 17 and blower 19 are roughly located along the same line, grip part 130 on handle 13 is distributed in the both sides of center of gravity place plane (figure is mark not), described plane is parallel with the axis of blower 19, and vertical with work ground P2, above-described work ground is defined as a horizontal plane.
Control Component 14 is for controlling switching and the rotating speed size of hand blower, it comprises that the trigger 140 of controlling hand blower and opening and closing, the lock-button 141 that prevents hand blower error starting, control hand blower are with the amplification button 142 of maximum (top) speed running and the speed governing button 143 of adjusting hand blower motor 172 rotating speeds, and wherein speed governing button 143 is positioned in speed governing portion 132.For the convenience operating, wherein trigger 140, lock-button 141 and amplification button 142 are all arranged on grip part 130, such position arranges and can ensure that operator can amplify button 142 with thumb operation in by trigger action 140, under high speed blowing condition, work for a long time if needed in addition, operator also can be pressed simultaneously and be amplified button 142 and lock-button 141 by palm in the time of holds handle 13, press trigger squeeze 140 by finger part in addition, so only can complete the startup of hand blower and keep its continuous running with maximum running speed by one-handed performance, reduce the fatigue of hand in use procedure, increase and grip comfort level.Wherein lock-button 141 is only the auxiliary switch part arranging in order to prevent maloperation from starting hand blower, can imagine and also can there is no lock-button 141, only complete the start-up course of hand blower and keep its continuous running by trigger 140 and amplification button 142.
Battery 15 is arranged on housing 11 by battery installation section 131, for providing power supply to hand blower, on housing 11, be provided with the ejection that coordinates with battery 15 116 and battery mounting base (figure is mark not), ejecting 116 is connected with spring 117, and can rotate relative to housing, in the time that battery 15 is installed on housing 11, the front end of battery 17 promotes to eject 116 elastic force that overcome spring 117 and rotates and be displaced to a precalculated position, when dismounting is when battery 15, eject 116 and under the resilient force of spring 117, battery 15 is ejected towards the direction of dismounting.
In battery installation section 131, be provided with battery snap close 1311, battery snap close 1311 is for being locked at housing 11 by battery 15, on battery snap close 1311, interlock is provided with button release 1312, separate with battery 15 by the drive battery snap close 1311 of pressing or promote button release 1312 linkages, then battery 15 can disassemble easily under an effect of ejecting 116.Certainly, battery installation section 131 also can be arranged on housing 11, as long as can play the function on the battery mounting base that is locked at setting on housing 11 when battery 15 is installed.
Please refer to Fig. 7 and Fig. 8, letter road assembly 17 comprises the tube connector 170 being connected with blower 19, Han road 171 is connected with housing 11, and motor 172 and fan 173, motor 172 is connected with the trigger 140 on Control Component 14 by wire, the mutual clamping in tube connector 170Yu Han road 171, in tube connector 170Yu Han road 171, be provided with the support ring 174 that holds motor 172, motor 172 is arranged in support ring 174, fan 173 is connected with the output shaft of motor 172, the interior all one-body molded wind-guiding muscle 175 that has some divergent shapes in tube connector 170Ji Han road 171, wind-guiding muscle 175 one end are connected on the inwall in tube connector 170Huo Han road 171, the other end is connected on support ring 174, wherein at least one wind-guiding muscle 175, be provided with the passage 176 that power supply machine 172 wires pass.So not only increased the reliability of wire location but also reduced windage, and not increased new part, when assembling, fixing cord is simple, reliable, convenient.Be understandable that, if letter road 171 length are enough, also can not pass through tube connector 170, directly support ring 174 and wind-guiding muscle 175 are set on letter road 171.Letter road 171 has an inlet section 1711, in order to reduce the noise at 1711 places, inlet section, letter road, inlet section, letter road 1711 is arranged for ease of the lip limit structure of wind-guiding, and above-mentioned lip limit structure is can Yu Han road 171 integrally formed or form independent part and be installed on letter road 171.
In embodiment of the present invention, fan 173 is aerofoil fan, motor 172 is brshless DC motor, fan 173 is driven by motor 172, it comprises a wheel hub 1731 being installed on electric machine rotational axis (figure is mark not), multiple blades 1732 that are installed on above-mentioned wheel hub 1731, its Leaf 1732 can be one-body molded with wheel hub 1731, can be to be also assembled into together after being separately shaped.
Fan 173 is provided with radome fairing 177 near one end of housing 11, motor 172 is connected to fan 173 one end near blower 19, because fan 173 is aerofoil fan, air-flow enters after fan 173 by the first blowing passage and second, third blowing passage, the axial wind-guiding muscle 175 that passes through under the effect of fan 173, and flow in blower 19.In embodiment of the present invention, support ring 174 comprises the accommodation section 1741 and the air dam 1742 that hold motor 172, the front end perforate (figure is mark not) of accommodation section 1741, air dam 1742 is pyramidal structure one-body molded with accommodation section 1741, air dam 1742 is arranged on one end near blower 19 on support ring 174, on air dam 1742, be provided with some fresh air inlets (figure is mark not), flow into for cooling air.In blowing process, because the air pressure of motor 172 peripheries is high compared with near air pressure fan 173, under the effect of pressure differential, produce time air-flow, inferior air-flow flows into support ring 174 inside by the fresh air inlet on air dam 1742, cooling motor 172 inside, the final front end perforate by accommodation section 1741 is flowed out, and can play again like this effect of cooling motor 172 in the process of blowing.
Please refer again to Fig. 3, for the ease of carrying, on hand blower of the present invention, be also provided with braces (not shown), braces two ends are connected respectively to two the lanyard holes 118,119 that are arranged on housing 11, two lanyard holes 118,119 are substantially the same to the distance at 130 centers, grip part, and the mid point of two lanyard hole 118,119 position lines is positioned near of machine gravity line.
Hand-held DC blower is mainly used in blowing ground, court and grandstand neighbouring fallen leaves and small-sized rubbish, obtain through investigation, in order to blow afloat the rubbish in a large amount of fallen leaves in ground and some cracks, conventionally need the air quantity of hand blower to be preferably greater than 395cfm.In the market power brick is arranged on to hand-held DC blower on the housing limitation due to the aspect such as battery capacity is little and hair-dryer complete machine air-out efficiency is lower, cause hair-dryer to be difficult to reach air quantity and be greater than 395cfm, the working time is greater than the performance indications of 5min.Therefore,, in order to reach larger air quantity and higher blowing efficiency, need to be optimized the parameter of battery capacity, brshless DC motor, aerofoil fan and Duct design.
In order to reach desirable airflow value and the working time, the capacity of battery is greater than 170wh conventionally, the capacity of battery is directly proportional to the weight of itself under normal circumstances, for hand blower, due to the weight requirement to complete machine, the preferable range of power brick capacity, between 170wh-400wh, if such setting is because power brick capacity is too little on the one hand, can not meet the requirement of air quantity and working time; And if power brick capacity is too large on the other hand, in use hand-held sense of fatigue can increase, and is unfavorable for that operator works long hours.
Table 1 has been listed battery capacity in the time of 200wh and 300wh, the effective time of hand blower in the time of maximum quantity of wind operation and the operation of minimum air quantity.From table 1, also can find out, battery capacity one timing, air quantity and working time are inversely proportional to, and that is to say that air quantity is larger, and the working time is shorter.According to ergonomics, and draw by a large amount of simulated experiment analyses of bearing usage degree to complete machine weight, people, the performance parameter that is applicable to the hand-held direct current hand blower of popular client's instructions for use is: air quantity is between 385cfm-700cfm, and the working time is between 20min-75min.
Table 1
| Battery capacity | Maximum quantity of wind | Minimum air quantity |
| 200wh | 36min | 120min |
| 300wh | 54min | 180min |
In the situation that battery capacity is certain, be greater than the hand-held direct current hand blower of 395cfm, higher blowing efficiency in order to obtain an air quantity, also need parameter and Duct design to brshless DC motor, aerofoil fan to be optimized.
Please refer again to Fig. 7 and Fig. 8, motor 172 is received in the support ring 174 arranging on letter road 171 and tube connector 170, the wheel hub 1731 of aerofoil fan 173 is installed on the axis of rotation (figure is mark not) of motor 172, according to aerodynamic principle, for reducing windage, improve wind speed, radome fairing 177, wheel hub 1731 and the outline of support ring 174 be designed to one streamlined, therefore motor 172 diameter have also determined the diameter of wheel hub 1731 simultaneously.In addition, in the time of design aerofoil fan, the ratio of the root diameter (RD) of blade and top diameter, being fan hub diameter and the ratio of blade external diameter, being called for short hub ratio below, is a very important parameter, same impeller outer diameter, wheel hub leaflet length of a film is more suitable for the axial flow blower of low pressure and mass flow, and through sunykatuib analysis hub ratio, between 0.25-0.45, the air-out efficiency of fan blade is higher.If therefore motor diameter is larger, corresponding hub diameter also can be larger, for hub ratio parameter is remained in optimum interval, thereby obtain higher air-out efficiency, the corresponding increase of diameter of blade, and then cause letter road volume to increase, the volume of complete machine also increases, and is that the operational comfort in configuration design or actual use procedure all can affect adversely like this, and therefore preferred motor diameter is not more than 35mm, overall mass is lighter like this, takes up space less.According to the scope of hub ratio, the scope that can further draw blade external diameter is between 78mm-140mm, blowing efficiency is higher like this, as shown in Figure 9, C1 and C2 are respectively air quantity in the time of 560cfm and 500cfm, through the curve map of functional relation between analogue simulation modeling analysis gained blade external diameter and blowing efficiency, blade external diameter is in the time of 85mm-140mm as seen from the figure, blowing efficiency is best, and the merit that the blowing definitions of efficiency is here air current flow generation and fan blade are rotated the ratio of the merit consuming.
Further, because the diameter of motor is less than 35mm, the ratio of air quantity and motor diameter is greater than 12cfm/mm, and therefore, compared with common hand blower, the hand blower in the present invention obtains more powerful blowing effect by the motor of small size.
Below Duct design of the present invention is described in detail, please refer again to Fig. 2, along the direction of axis L1, be greater than the flow cross section S3 at air outlet 191 positions on blower 19 near the flow cross section S1 in the air channel at air intake 112 positions in the rear end of fan 173, and between Han road 171 inwalls and fan hub 1731, form an annular circulating face (figure is mark not), ratio on blower 19 between the flow cross section S2 of the flow cross section S3 at air outlet 191 positions and aerofoil fan 173 present positions annular circulating faces more preferably greater than or equal 0.8, like this effective airflow characteristic that improves is set, improve blowing efficiency.Simultaneously fan 173 is to an outer contour L2 of 191 sections of air channels definition of air outlet, and L1 and L2 have defined an angle.Preferably, angle between axis L1 and outer contour L2 is less than 8 degree, and arranging is like this because angle is larger forms certain windage to air-flow, and the air flow losses of wind path wall increases like this, in blower 19, the loss of the high velocity air of circulation increases, and causes the blowing Efficiency Decreasing of complete machine.By the optimization of above two parameters, can realize favourable air current flow situation simultaneously in the less pressure loss of the interior realization of blower 19, effectively improve blowing efficiency.
In order to reach enough air outputs at air outlet 191 places, through CFD(computational fluid dynamics) analyze and test data summary, the larger air outlet place area of design conventionally, preferred, the cross-sectional area at air outlet 191 positions is set to be greater than 4300mm2.Certainly, along with the increase wind speed of blowing area can decrease, through the preferred air outlet area of practical operation is set to 4300mm
2to 8000mm
2.
By the optimization of parameter designing and the improvement of Duct design of the battery capacity in the present invention, brshless DC motor, aerofoil fan, in the time that battery capacity is between 170wh-400wh, more than the air quantity of hand blower all can reach 395cfm, particularly when air quantity is during at 430-700cfm, still can meet the working time and be greater than 5min.Can ensure that hair-dryer moves with maximum quantity of wind time, the ratio of air quantity and input power is more than or equal to 0.7cfm/w simultaneously, and blowing efficiency is very significantly improved.
Although the present invention discloses as above with preferred embodiment, so it is not in order to limit the present invention.Persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is when being as the criterion depending on claims person of defining.
Claims (10)
1. a hand blower, comprise housing, battery and blower, on described housing, be provided with air intake He Yigehan road assembly, described letter road assembly comprises and is connected Han road with housing and is installed to motor and the fan in letter road, described housing is connected on blower by letter road assembly, described battery is arranged on housing, it is characterized in that: the battery capacity of described hand blower is greater than 170wh.
2. hand blower according to claim 2, is characterized in that: the battery capacity of described hand blower is between 170wh-400wh.
3. hand blower according to claim 1, is characterized in that: the air quantity of described hand blower between 430cfm-700cfm, and the working time be greater than 5min.
4. hand blower according to claim 1, it is characterized in that: described hand blower also comprises a handles, described handle comprises a grip part, a battery installation section and a speed governing portion, described holding area, between battery installation section and speed governing portion, is provided with the battery installation component for battery described in installation or removal in described battery installation section.
5. hand blower according to claim 4, is characterized in that: described battery installation component comprises a battery snap close, button release with the interlock of described battery snap close, and described button release can drive battery snap close to separate with battery.
6. hand blower according to claim 5, is characterized in that: described battery installation component also comprises an ejection head being arranged on housing, and described ejection head is connected with an elastic component, and can rotate with respect to housing.
7. hand blower according to claim 1, it is characterized in that: described fan is connected with motor, described motor is brshless DC motor, and described fan is aerofoil fan, the diameter of described brshless DC motor is not more than 35mm, and the external diameter of described aerofoil fan is between 85mm-140mm.
8. hand blower according to claim 7, is characterized in that: the ratio of described hand-held blow fan delivery and brshless DC motor diameter is greater than 12cfm/mm.
9. hand blower according to claim 1, it is characterized in that: on described blower, defined a central axis, be greater than the area of the flow cross section at air outlet position on blower near the flow cross section in the air channel at air intake position in the rear end of fan along the direction of axis, between described inner walls and fan hub, form a circulating face, the ratio on blower between the flow cross section at air outlet position and the flow cross section of fan present position circulating face is more than or equal to 0.8.
10. hand blower according to claim 9, is characterized in that: described fan is to an outer contour of air channel definition of air outlet section, and the angle of described central axis and described outer contour is less than or equal to 8 degree.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310108035.2A CN104074155B (en) | 2013-03-29 | 2013-03-29 | Hand blower |
| US14/034,104 US10000900B2 (en) | 2013-02-20 | 2013-09-23 | Handheld blower having engine cooling flow |
| CA2828567A CA2828567C (en) | 2013-02-20 | 2013-09-26 | Handheld blower |
| GB1702543.8A GB2549370A (en) | 2013-02-20 | 2014-02-18 | Handheld blower |
| GB1402819.5A GB2513230A (en) | 2013-02-20 | 2014-02-18 | Handheld blower |
| FR1451355A FR3002245B3 (en) | 2013-02-20 | 2014-02-20 | MAN BLOWER |
| AU2014100157A AU2014100157A4 (en) | 2013-02-20 | 2014-02-20 | Handheld Blower |
| DE202014100752.0U DE202014100752U1 (en) | 2013-02-20 | 2014-02-20 | hand fan |
| US15/703,485 US10774487B2 (en) | 2013-02-20 | 2017-09-13 | Handheld blower having engine cooling flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310108035.2A CN104074155B (en) | 2013-03-29 | 2013-03-29 | Hand blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104074155A true CN104074155A (en) | 2014-10-01 |
| CN104074155B CN104074155B (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310108035.2A Active CN104074155B (en) | 2013-02-20 | 2013-03-29 | Hand blower |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106284152A (en) * | 2015-05-11 | 2017-01-04 | 南京德朔实业有限公司 | Hair-dryer |
| CN106284153A (en) * | 2015-05-11 | 2017-01-04 | 南京德朔实业有限公司 | Hair-dryer |
| CN106284149A (en) * | 2015-05-11 | 2017-01-04 | 南京德朔实业有限公司 | Hair-dryer |
| CN106284148A (en) * | 2015-05-11 | 2017-01-04 | 南京德朔实业有限公司 | Hair drier |
| CN107558421A (en) * | 2016-06-30 | 2018-01-09 | 南京德朔实业有限公司 | Hair-dryer |
| CN107773151A (en) * | 2017-11-30 | 2018-03-09 | 莱克电气股份有限公司 | A kind of wireless handheld dust catcher |
| CN107822560A (en) * | 2017-11-30 | 2018-03-23 | 莱克电气股份有限公司 | A kind of hand-held cleaners main frame |
| CN109594511A (en) * | 2018-11-16 | 2019-04-09 | 常州信息职业技术学院 | A kind of blowing device with infrared detection |
| US10337526B2 (en) | 2015-05-11 | 2019-07-02 | Chervon (Hk) Limited | Blower |
| CN110236280A (en) * | 2018-03-08 | 2019-09-17 | 南京德朔实业有限公司 | A kind of hair dryer |
| CN110528434A (en) * | 2018-05-25 | 2019-12-03 | 南京德朔实业有限公司 | Hair dryer |
| CN110754015A (en) * | 2017-06-09 | 2020-02-04 | 胡斯华纳有限公司 | Blower with improved battery cooling |
| CN112386159A (en) * | 2019-08-11 | 2021-02-23 | 苏州谷为电器有限公司 | Hand-held type surface cleaning device |
| US11248626B2 (en) | 2013-02-20 | 2022-02-15 | Chervon (Hk) Limited | Handheld blower |
| US11889794B2 (en) | 2020-12-30 | 2024-02-06 | Milwaukee Electric Tool Corporation | Handheld blower |
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