KR20200007488A - Dust collector for vacuum cleaner - Google Patents

Abstract

Disclosed is a fluid absorption device for a vacuum cleaner. The disclosed fluid absorption device includes: a motor case including a fluid guide part of which size is gradually reduced to guide the discharge of air absorbed through an impeller unit; an impeller housing combined with the motor case to form an impeller absorption fluid transfer flow path by being paired with the motor case in order to transfer air absorbed from the outside by the impeller unit; and a convection current duct in which the impeller housing is placed to be paired with the impeller housing to form a sub transfer flow path, and taking in and transferring the air around the impeller housing due to a change in the pressure of the air discharged from the impeller housing and the motor case. Therefore, according to the present invention, as air absorbed by an impeller is discharged through a motor absorption fluid transfer flow path, the Coanda effect and the Bernoulli effect can occur. Therefore, the absorption and discharge of the air can be increased.

Description

Cleaner Fluid Suction Device {DUST COLLECTOR FOR VACUUM CLEANER}

The present invention relates to a fluid suction device for a cleaner, and more particularly, it is possible to increase the amount of air by generating a Coanda and Bernoulli effect while transferring the air sucked by the impeller through a plurality of fluid movement channels. In addition, the present invention relates to a fluid suction device for a cleaner to improve the cooling effect of the impeller unit.

In general, a vacuum cleaner is a device for cleaning by suctioning foreign substances on the cleaning surface by the suction force generated by the driving of the fan, the vacuum cleaner body for generating the suction force, and the suction nozzle for sucking the foreign substances on the cleaning surface extending from the cleaner body And a connection pipe for connecting the suction nozzle and the cleaner body.

Such a vacuum cleaner is manufactured in various shapes of the suction nozzle so as to increase the cleaning efficiency according to the place or location of the vacuum cleaner.

Recently, the use of a robot cleaner that automatically cleans dust accumulated on the floor while driving the cleaning area without a user's operation is gradually increasing.

The Robot Cleaner detects the cleaning area and obstacles by using the sensor by the command of the control means, runs the cleaning area and cleans automatically, and when the power of the battery provided inside the device is exhausted It is a device that moves to a charging station separately provided at a predetermined position and charges it, and after the charging is completed, the cleaning is returned to the original position where the cleaning was performed again.

In addition, the robot cleaner includes a suction device for suctioning foreign substances and a dust collector for dust collection of the sucked foreign substances, and transports air while the impeller of the suction device rotates. And the impeller is rotated by the motor.

However, the conventional suction device as described above has a problem in that the discharge amount is significantly lowered due to the generation of vortices or backflow when air by the impeller is sucked out and discharged.

Therefore, there is a need for improvement.

Meanwhile, Korean Patent No. 10-0405980 (Registration Date: November 04, 2003) discloses "Euro System of Vacuum Cleaner with Ejector", and Korean Patent Publication No. 10-0444553 (Registration Date: 2004 August 5, 2008) discloses a cyclone dust collector of a vacuum cleaner.

The present invention has been created by the necessity as described above, while the air sucked by the impeller can pass through a plurality of fluid flow passages to generate the Coanda and Bernoulli effect to increase the emission of air, the cooling of the impeller unit It is an object of the present invention to provide a fluid suction device for a cleaner that can improve the effect.

In order to achieve the above object, the fluid suction device for a cleaner according to an aspect of the present invention includes a motor case including a fluid guide part gradually decreasing in size to guide discharge of air sucked by the impeller unit, and An impeller housing coupled to the motor case to form an impeller suction fluid transfer path in pair with the motor case for the transfer of air sucked from the outside by an impeller unit, and the air discharged from the motor case and the impeller housing. And a convection induction duct covering the impeller housing such that air around the impeller housing is transported by natural convection due to a pressure change.

In the present invention, the motor case is protruded outward is coupled to the impeller housing, characterized in that it further comprises a case coupling portion for introducing the air into the impeller suction fluid transfer flow path for cooling of the impeller unit. .

In the present invention, the motor case, characterized in that it further comprises a case discharge port for discharging the air introduced into the interior through the case coupling portion.

In the present invention, the impeller housing, the motor case is coupled, the fluid guide portion for inducing air discharged from the motor suction fluid transfer flow path to the outer surface of the fluid guide portion, and a fluid suction port is formed to cover the impeller unit And a fluid suction part coupled to the fluid induction part.

In the present invention, the fluid guide portion, the fluid guide rim member and the fluid guide rim member is coupled to the motor case, the fluid guide bending portion is formed to guide the air transported from the motor suction fluid transfer flow path to the fluid guide portion side; It is formed in a ring shape so as to be spaced apart and characterized in that it comprises a duct coupling member coupled to the convection induction duct.

In the present invention, the convection induction duct is open at one side to form a convection suction port, and a convection guide bend is formed to guide the natural convection air to the fluid guide side at the other side.

As described above, the cleaner fluid suction device according to an aspect of the present invention, unlike the conventional invention, generates a Coanda effect and a Bernoulli effect while discharging the air sucked by the impeller through the motor suction fluid transfer channel. It has the effect of increasing the intake and discharge.

In addition, the fluid suction device for a cleaner according to the present invention has the effect of improving the cooling effect by passing the air sucked by the impeller to the core of the impeller unit.

1 is an exploded perspective view showing a fluid suction device for a cleaner according to an embodiment of the present invention.
Figure 2 is a perspective view showing a fluid suction device for a cleaner according to an embodiment of the present invention.
3 is a cross-sectional view taken along the line AA of FIG. 2.
4 is an enlarged view illustrating main parts of the motor case and the fluid induction part according to the exemplary embodiment.
5 is a front view of FIG. 4.
Figure 6 is a schematic diagram showing the fluid flow of the fluid suction device for cleaners according to an embodiment of the present invention.
7 is a view showing a fluid transfer simulation of the fluid suction device for cleaners according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the fluid suction device for a cleaner according to the present invention. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

1 is an exploded perspective view illustrating a fluid suction device for a cleaner according to an embodiment of the present invention, FIG. 2 is a perspective view illustrating a fluid suction device for a cleaner according to an embodiment of the present invention, and FIG. 3 is FIG. 2. AA line cross-sectional view.

4 is an enlarged view illustrating main parts of a motor case and a fluid guide part according to an exemplary embodiment, and FIG. 5 is a front view of FIG. 4.

6 is a schematic view showing the fluid flow of the fluid suction device for a cleaner according to an embodiment of the present invention, Figure 7 is a diagram showing the fluid transfer simulation of the fluid suction device for a cleaner according to an embodiment of the present invention.

1 to 7, the fluid suction device 100 for a cleaner according to an embodiment of the present invention is installed in the cleaner main body so as to communicate with a suction nozzle (not shown) of the vacuum cleaner, and suction of foreign matters. Forcibly inhale air outside.

To this end, the cleaner fluid suction device 100 according to the present embodiment is paired with the motor case 120 and the motor case 120 to which the impeller unit 110 is coupled to form the motor suction fluid transfer path 101. It includes an impeller housing 130 to form, and a convection induction duct 140 paired with the impeller housing 130 to form an auxiliary conveying flow path 103. In addition, the cleaner fluid suction device 100 further includes a motor fixture 150 provided between the motor case 120 and the impeller housing 130 to stably fix the impeller unit 110.

The fluid suction device for a cleaner 100 according to the present embodiment has a coanda effect on the outer surface of the motor case 120 by the motor case 120 and the impeller housing 130, and the convection induction duct 140. This causes the Bernoulli effect. Through this, a Coanda effect and a Bernoulli effect occur simultaneously in the fluid discharged between the motor case 120 and the convection induction duct 140, thereby increasing the fluid transfer amount of the cleaner fluid suction device 100. Can be increased.

The motor case 120 is coupled to the impeller housing 130 and is disposed at the center of the convection induction duct 140, and an impeller unit for forcibly inhaling air outside the impeller housing 130 to the motor suction fluid transfer flow path 101. 110 is combined.

The motor case 120 is sucked by the impeller unit 110 and the fluid guide part 121 is formed to bend to guide the flow of air discharged through the motor suction fluid transfer flow path 101. The diameter of the fluid guide portion 121 gradually decreases, and a cylindrical case outlet 123 is formed at an inner end thereof.

In addition, the motor case 120 is coupled to the inner surface of the impeller housing 130 is formed so that the case coupling portion 125 protrudes outward to form a motor suction fluid transfer flow path (101). The motor case 120 according to the present invention may be formed in a cylindrical shape.

The case coupling part 125 has both sides and an outer surface thereof coupled to and supported by the impeller housing 130, and introduces air transferred along the motor suction fluid transfer path 101 into the inside of the motor case 120 to impeller unit 110. To improve the cooling effect.

Such, the case coupling portion 125 is formed to be inclined protruding in the longitudinal direction of the motor case 120, the inclined support surface (125a) is formed to be inclined on both sides is fixed in contact with the impeller housing 130.

On the other hand, the case outlet 123 discharges the air introduced into the motor case 120 through the case coupling portion 125 to the outside of the motor case 120. Since the air discharged through the case outlet 123 is joined with the flow of air discharged from the motor suction fluid transfer path 101 and the auxiliary transfer path 103, the air discharged from the cleaner fluid suction device 100 It can increase flow rates and emissions.

The impeller housing 130 is coupled to the motor case 120 and the motor fixture 150, and is paired with the motor case 120 to transfer the motor suction fluid to transfer the air sucked from the outside by the impeller unit 110. The flow path 101 is formed.

The impeller housing 130 and the fluid guide portion 131 to which the case coupling portion 125 of the motor case 120 is coupled, and the fluid guide portion 131 through the motor fixture 150 to cover the impeller unit 110. It includes a fluid inlet 133 is coupled.

The fluid induction part 131 is coupled to the motor case 120 therein, and the outer surface thereof is coupled to the inner surface of the convection induction duct 140, and transmits the flow of the fluid discharged from the motor suction fluid transfer path 101 to the motor case 120. Guides to the outer surface of the fluid guide portion (121).

To this end, the fluid guide part 131 is fixed to the case coupling part 125, and the fluid guide rim member 131a for guiding the flow of air transferred from the motor suction fluid transfer path 101 to the fluid guide part 121 side. , The duct coupling member 131b for fixing the impeller housing 130 to the convection induction duct 140.

The fluid guided rim member 131a has a fluid guide bend 131a ′ for guiding the flow of air transferred from the motor suction fluid transfer path 101 to the outer surface of the fluid guide part 121 to improve the coanda effect. It is formed to be bent in the direction. In addition, the fluid guide rim member 131a is provided with a plurality of coupling grooves 131c in which the case coupling part 125 is inserted and fixed along the circumferential direction.

The duct coupling rim member 131b is formed in a cylindrical shape and is integrally coupled to the outer surface of the fluid guide rim member 131a through a spaced rib 131b '.

The fluid suction part 133 is formed with a fluid suction port 133a, and is coupled to the motor fixture 150 to cover the impeller unit 110 to form the motor suction fluid transfer flow path 101. The fluid inlet 133 is gradually expanded toward the motor fixture 150 from the fluid inlet 133a.

The impeller unit 110 is seated inside the motor case 120, the motor member 111 fixed by the motor fixture 150, and the motor member 111 through the rotation shaft to be disposed inside the fluid inlet 133a. Impeller member 113 is rotatably coupled to).

The motor fixture 150 is coupled between the fluid induction part 131 and the fluid intake part 133 to fix the motor member 111, and to the fluid forcibly sucked into the fluid intake part 133 by the impeller member 113. Generate swirl flow to increase the feed rate of the fluid. To this end, the rotor fixing blade 151 protrudes from one side of the motor fixture 150.

The convection induction duct 140 is paired with the impeller housing 130 to form an impeller housing 130 therein to form an auxiliary conveying flow path 103. One side of the convection induction duct 140 is completely open to form a convection inlet 141, and the outside air is introduced by the pressure difference generated by the fluid forcibly discharged from the motor suction fluid transfer passage 101. .

Convection induction duct 140 according to the present embodiment may be connected to the dust collecting assembly of the cleaner.

In addition, the convection induction duct 140 allows the convection guide bend 143 to bend the natural convection along the auxiliary feed flow path 103 to the fluid guide part 121 of the motor case 120 to be bent toward the center direction. Is formed.

At this time, since the flow rate of the fluid discharged through the motor suction fluid transfer flow path 101 is discharged at a higher speed than the flow rate of the fluid discharged from the auxiliary transfer flow path 103, the Bernoulli effect is generated to the auxiliary transfer flow path 103. It is possible to further increase the flow rate and flow rate of the conveyed fluid. Here, the width of the motor suction fluid transfer passage 101 is smaller than the width of the auxiliary transfer passage 103.

In addition, the convection guide duct 140 has a cylindrical integrated discharge port 145 formed at the end of the convection guide bent portion 143. The integrated discharge port 145 discharges the fluid transferred through the case discharge port 123, the motor suction fluid transfer path 101, and the auxiliary transfer path 103 at the same time.

In the present exemplary embodiment, the fluid suction device 100 is applied to a cleaner, for example, but may be used in a hair dryer, an air purifier, or the like.

It describes the operation of the fluid suction device for a cleaner according to an embodiment of the present invention configured as described above.

When the impeller member 113 rotates as the motor member 111 operates, the outside air of the cleaner fluid suction device 100 is forced to be suctioned through the fluid suction port 133a of the fluid suction part 133. The fluid forcibly sucked through the fluid suction port 133a is transferred through the motor suction fluid transfer path 101 to be discharged between the fluid guide part 121 and the fluid guide bend 131a ', and the fluid guide is performed by the Coanda effect. It is conveyed along the surface of the part 121.

In addition, some of the fluid sucked into the impeller housing 130 is transferred to the inside of the motor case 120 by the case coupling part 125 to cool the motor member 111, and then is discharged to the case outlet 123. .

In particular, a pressure difference occurs inside and outside the auxiliary transport flow path 103 due to the flow rate of the fluid transported along the surface of the fluid guide part 121 of the motor case 120. That is, the Bernoulli effect appears, and the air outside the convection induction duct 140 is naturally convection into the convection induction duct 140 and is transported through the auxiliary transport channel 103. This further increases the air emissions of the cleaner fluid suction device 100.

Such a fluid suction device for a cleaner 100 according to the present invention is the pressure difference in the convection induction duct 140 as the air forced by the impeller member 113 is transported through the motor suction fluid transfer flow path 101 and discharged Will occur. As a result, the Coanda effect and the Bernoulli effect are generated, and thus the air intake and discharge of the motor case 120 and the convection induction duct 140 may be increased.

In addition, since the air suctioned into the impeller housing 130 by the impeller member 113 in the cleaner fluid suction device 100 according to the present invention is guided into the motor case 120 through the case coupling part 125. The cooling effect of the motor member 111 can be improved.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. I will understand.

Therefore, the true technical protection scope of the present invention will be defined by the claims.

100: fluid suction device for cleaner 101: motor suction fluid transfer flow path
103: auxiliary feed flow path 110: impeller unit
111: motor member 113: impeller member
120: motor case 121: fluid guide portion
123: case outlet 125: case coupling portion
130 impeller housing 131 fluid guide part
131a: fluid guide rim member 131b: duct coupling rim member
133: fluid suction portion 140: convection induction duct
141: convection suction port 143: convection guide bend
145: integrated outlet 150: motor fixture

Claims (6)

A motor case including a fluid guide portion that is gradually reduced in size to guide the discharge of air sucked by the impeller unit;
An impeller housing coupled to the motor case to form an impeller suction fluid transfer path in pair with the motor case for transporting air sucked from the outside by the impeller unit; And
The impeller housing is disposed therein so as to form an auxiliary conveying flow path in pairs with the impeller housing, and the air around the impeller housing is introduced and transferred by the pressure change of the air discharged from the impeller motor case and the impeller housing. Convection induction ducts;
Cleaner fluid suction device comprising a.
The method of claim 1,
The motor case is protruding outwardly is coupled to the impeller housing, the case coupling portion for introducing the air into the impeller suction fluid transfer flow path for cooling the impeller unit; cleaner further comprising a Fluid suction device.
The method of claim 2,
The motor case, the fluid intake apparatus for a cleaner, further comprising a case outlet for discharging air introduced into the case through the case coupling portion.
The method of claim 1,
The impeller housing, the motor case is coupled, the fluid guide portion for inducing air discharged from the motor suction fluid transfer flow path to the outer surface of the fluid guide portion; And
A fluid suction part having a fluid suction port formed therein and coupled to the fluid induction part to cover the impeller unit;
Cleaner fluid suction device comprising a.
The method of claim 4, wherein
The fluid induction part may include: a fluid induction rim member having the motor case coupled thereto and having a fluid induction bent portion to guide the air transferred from the motor suction fluid transfer path toward the fluid guide part; And
A duct coupling rim member formed in a ring shape to be spaced apart from the fluid guide rim member and coupled to the convection induction duct;
Cleaner fluid suction device comprising a.
The method of claim 1,
The convection induction duct, one side is open, the convection suction port is formed, the other side is a fluid fluid suction device for cleaners, characterized in that the convection guide bend is formed to guide the air to the fluid guide side.

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