CN1241517C

CN1241517C - Vacuum cleaner having suction fan

Info

Publication number: CN1241517C
Application number: CN 01144274
Authority: CN
Inventors: 洪尚郁
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2001-12-17
Filing date: 2001-12-17
Publication date: 2006-02-15
Anticipated expiration: 2021-12-17
Also published as: CN1426729A

Abstract

The present invention discloses a vacuum cleaner with an air suction fan. An impeller of an air suction fan generates suction force along an axial direction, and a motor is connected with a rotating shaft of an impeller into one whole to drive the impeller to rotate. The present invention is characterized in that a vacuum cleaner housing at the impeller in a rotation axis direction of the impeller is provided with an air suction port, and the vacuum cleaner housing is provided with an air exhaust port at the other side opposite to the air suction port; air is sucked in through the air suction port and then is exhausted out through the air exhaust port. In addition, in the rotation axis direction of the impeller, the housing is provided with an exhaust port at the extension line of the air exhaust port, and the air is exhausted out of the housing through the exhaust port. The air sucked in through the air suction port is exhausted out through the air exhaust port after passing through motor; thus, the flow resistance of the air can be reduced, the suction force can be enhanced, the temperature rise of the motor can be prevented, and the motor can be prevented from being forced to thermalize.

Description

The vacuum cleaner that has suction fan

Technical field

The present invention relates to the dust catcher field, especially by reducing the dust catcher that the gas flow resistance increases suction.

Background technology

In general, the horizontal sectional drawing of prior art vacuum cleaner as shown in Figure 1, vaccum dust catcher has following structure: shell 110 inside have placement space; The suction fan 120 that produces suction is placed on the inside of shell 110; Dust bag 150 is positioned at suction fan 120 fronts, dust and foreign matter in the internal gathering gas of dust bag 150; Flooded suction 152 can suck foreign matters such as dust from the outside; Tube connector 154 connects flooded suction 152 and shell 110.One side of shell 110 has the interface 111 that connects tube connector 154; One side of interface 111 has the dust bag placement space 112a that can place dust bag 150.There are suction fan placement space 112b and power line spool placement space 112c in the rear of dust bag placement space 112a.Can put into suction fan 120 in the suction fan placement space 112b; Put into power line spool 115 in the power line spool placement space 112c, be wound with the power line 117 that power supply is provided on the power line spool 115.Suction fan 120 is made up of impeller 121, motor section 131 and casing 141.Impeller 121 produces suction along axis direction; Motor section 131 is combined into one the rotation of drives impeller 121 with the rotating shaft 123 of impeller 121; Impeller 121 and motor section 131 are put into casing 141 and can be rotated.On the axis direction of impeller 121, the air entry 142 that sucks gas is arranged in the place ahead of impeller 121; There is exhaust outlet 144 side of motor section 131, will suck gas from air entry 142 by above-mentioned exhaust outlet 144 and discharge.

By said structure, give motor section 131 energisings, the rotor 134 of motor section 131 is rotated, and the impeller 121 that links to each other with rotor 134 is and then rotation also, along with the rotation of impeller 121, the inner suction that produces.Suck outside gas and foreign matter from flooded suction 152, the gas and the foreign matter that suck by flooded suction 152 are drawn into 150 li of dust bag through tube connector 154.Be drawn into of the filtration of the foreign matter of 150 li of dust bag, the inside of collecting dust bag 150 by dust bag 150; Be inhaled into the inside of casing 141 by air entry 142 through the gas of dust bag 150; Gas through impeller 121 carries out heat exchange in motor section 131; Discharge to the outside of casing 141 by a plurality of exhaust outlets 144 that motor section 131 sides of casing 141 form.The gas that is drained into casing 141 outsides is discharged to the outside of shell 110 by the tap 116 at shell 110 rears.

But, the vaccum dust catcher of prior art has following shortcoming: since air entry 142 along impeller 121 along axis direction, exhaust outlet 144 is in the side of casing 141 and perpendicular to the axis direction of impeller 121, flow to motor section 131 and be drawn into casing 141 gas inside along axis direction by air entry 142, almost vertically change flow direction then and discharge, cause the gas flow resistance to increase by exhaust outlet 144.In addition, the gas of discharging by exhaust outlet 144 changes flow direction again discharges to the outside of shell 110 by the outlet 116 in shell 110 rear ends, and the problem that increases flow resistance is arranged equally.Because outlet 116 directions of the air entry 142 of above-mentioned suction fan 120 and suction fan 120, the exhaust outlet 144 of suction fan 120, shell 110 are inconsistent, increase the gas flow resistance, suction reduces relatively, the minimizing of suction is not only influential to the dust suction performance, and cause the temperature of motor section 131 to rise, impel motor to be forced to thermalization.

Summary of the invention

Technical problem to be solved by this invention provides a kind of vacuum cleaner that has suction fan, increases suction by reducing the gas flow resistance, prevents that the temperature of motor section from rising, and suppresses motor and is forced to thermalization.

In order to address the above problem, the invention provides a kind of vacuum cleaner that has suction fan, comprise shell, suction fan, dust bag, flooded suction, described suction fan is that impeller produces suction along axis direction, and the rotating shaft of motor section and impeller links into an integrated entity, and drives impeller is rotated, it is characterized in that: on the casing of the impeller side of the rotation direction of impeller, air entry is arranged, with air entry casing opposite side vis-a-vis exhaust outlet is arranged, gas sucks through air entry, discharges through exhaust outlet again.Along the rotation direction of impeller, on the extended line of exhaust outlet, outlet is arranged on the shell, outlet is discharged to gas the outside of shell.Outlet is corresponding with exhaust outlet along the extended line of gas flow direction.

The vacuum cleaning that has suction fan of the present invention can bring following effect: for the gas flow resistance that makes the suction fan side reduces, form air entry along axis direction in a side of casing, form exhaust outlet at the casing opposite side; Flow resistance for minimum gas, the outlet that is formed on the shell is corresponding on the extended line of gas flow direction and each exhaust outlet, not only can increase suction, and improved the dust suction performance, promote the cooling of motor section, suppressed because the motor of the motor section that the temperature rising causes is forced to thermalization.

Description of drawings

Fig. 1 is the horizontal sectional drawing of prior art vacuum cleaner.

Fig. 2 is the horizontal sectional drawing that the present invention has the vacuum cleaner of suction fan.

Fig. 3 is the oblique view of Fig. 2 suction fan.

Fig. 4 is the side view of Fig. 3 suction fan.

Among the figure, 10: shell, 12b: suction fan placement space, 16: outlet, 20: suction fan, 21: impeller, 31: motor section, 36: rotating shaft, 41: casing, 42: air entry, 44: exhaust outlet, 50: dust bag

The specific embodiment

Below in conjunction with the drawings and specific embodiments the present invention is further elaborated:

Shown in Fig. 2,3,4, vaccum dust catcher of the present invention has following structure: the inside of shell 10 forms placement space, and the end at rear forms outlet 44; Air entry 42 and exhaust outlet 44 on the rotation direction are arranged on the suction fan 20, make exhaust outlet 44 corresponding with outlet 16 along the extended line of gas flow direction, suction fan 20 is placed in the inside of shell 10, produces suction; The dust bag 50 of collecting foreign matters such as dust in the gas is set in the front of suction fan 20 along the gas flow direction; Tube connector 54 is connected a side of shell 10; Flooded suction 52 is interconnected with an end of tube connector 54, sucks gas and foreign matter from the outside.

One side of shell 10 has the interface 11 that connects tube connector 54; The opposite side of interface 11 has the dust bag placement space 12a of dust bag put into 50; Along the gas flow direction suction fan placement space 12b that puts into suction fan 20 is arranged in the back of dust bag placement space 12a; The side of suction fan placement space 12b has the power line spool placement space 12c that puts into power line spool 15; There is the through hole 13 that is interconnected with dust bag placement space 12a the front of suction fan placement space 12b.

In addition, suction fan 20 comprises motor section 31 and casing 41 etc.Impeller 21 produces suction along axis direction; Motor section 31 is combined into one the rotation of drives impeller 21 with impeller 21; Impeller 21 and motor section 31 can be put in casing 41 inside, and support the rotation of impeller 21 and motor section 31.

Motor section 31 is made up of stator 32 and rotor 34 and rotating shaft 36.Stator 32 is fixed on the inside of casing 41; Rotor 34 is put into the inside of stator 32, and can rotate; One end of rotating shaft 36 and the axle center of rotor 34 are combined into one and can rotate, and the axle center of the other end and impeller 21 is combined into one, and can rotate.Wherein stator 32 is made up of stator core 35 and coil.Stator core 35 is formed by a plurality of silicon steel sheet insulating accumulations of four jiaos of section configurations; Coil is wound on the stator core 35, and stator 32 is fixed on the inside of the casing 41 with circular cross sectional shape.

In impeller 21 sides of casing 41 air entry 42 is arranged along axis direction, air entry 42 is interconnected with through hole 13, sucks gas from dust bag placement space 12a; Motor section 31 sides at casing 41 have a plurality of exhaust outlets 44, keep a determining deviation between the exhaust outlet 44 mutually.In order to make the gas flow resistance little, each exhaust outlet 44 makes between interior week of stator core 35 each limit portions and casing 41 and is interconnected.

In addition, a plurality of outlets 16 in the rear of suction fan placement space 12b will be discharged to the outside of shell 10 by the gas that the exhaust outlet 44 of suction fan 20 is discharged.In order to reduce the gas flow resistance, be arranged to along the gas flow direction part in the outlet 16 corresponding with the extended line of each exhaust outlet 44.

By said structure, give motor section 31 energisings, rotor 34 forms one with rotating shaft 36 and is rotated; Simultaneously impeller 21 forms one with rotating shaft 36 and is rotated, and the air entry 42 by casing 41 sucks gas to inside; Flooded suction 52 sucks gas and foreign matter from the outside; Gas that is inhaled into and foreign matter flow into the inside of dust bag 50 by tube connector 54; Foreign matters such as dust are collected in the inside of dust bag 50, and gas is inhaled into the air entry 42 of casing 41 by dust bag 50.The gas that is inhaled into flows by the space between space, rotor 34 and the stator 32 between casing 41 and the stator core 35 along axis direction, cooling stator 32 and rotor 34; Then, gas is discharged to the outside of casing 41 by the exhaust outlet 44 at casing 41 rears.The gas that is discharged to casing 41 outsides flows along axis direction, discharges to the outside of shell 10 by the outlet 16 at shell 10 rears.

Claims

1. vacuum cleaner that has suction fan, comprise shell, suction fan, dust bag, flooded suction, it is characterized in that: on the casing (41) of the impeller side of the rotation direction of the impeller (21) of suction fan, air entry (42) is arranged, with air entry (42) casing (41) opposite side vis-a-vis exhaust outlet (44) is arranged, rotation direction along impeller (21), on the extended line of exhaust outlet (44), the outlet (16) that gas is discharged to the outside of shell (10) is arranged on the shell (10), and outlet (16) is corresponding with exhaust outlet (44) along the extended line of gas flow direction.