KR100837360B1 - Upright vaccum cleaner using return current of discharging air - Google Patents

Abstract

An upright vacuum cleaner using return current using exhaust gas recirculation is provided to reduce the size and weight of a cleaner body and improve separate collection of dirt contained in sucked air, thereby maximizing cleaning efficiency. An upright vacuum cleaner(10) using return current using exhaust gas recirculation comprises a suction nozzle part(100) having a suction motor(130) inside for inhaling dirt on a surface to be cleaned through a suction port(115) on a bottom surface using suction force of the suction motor, and a cleaner body(200) connected to the suction nozzle part for separate collection of dirt from air sucked together with the dirt by centrifugal force, and for discharge of sucked air separated from dirt through the suction nozzle part. The air discharged from the cleaner body is configured to be jetted toward the substrate to be cleaned from the inside of the suction nozzle part via the suction motor and finally returned to the suction port. The suction nozzle part comprises a motor chamber(111) in which the suction motor is mounted inside a housing(110), a discharge path(170) for guiding the air discharged from the motor chamber to a front side of the housing, a jetting path(170a) for jetting the discharged air guided by the discharge path to the surface to be cleaned, at least one jetting hole(171) formed at the end of the jetting path, and a HEPA(High Efficiency Particulate Air) filter(173) disposed on the jetting path to filter the discharged air from the motor chamber.

Description

Upright Vaccum Cleaner using Return Current of Discharging Air}

1 is a perspective view showing an upright vacuum cleaner according to an embodiment of the present invention;

Figure 2 is a side cross-sectional view showing the vacuum cleaner shown in FIG.

Figure 3 is a schematic diagram showing the air circulation in the upright vacuum cleaner according to an embodiment of the present invention,

4 is a schematic enlarged view illustrating a suction nozzle unit of FIG. 2.

* Description of Signs for Main Parts in Drawings *

100: suction nozzle unit 110: housing

130: suction motor 170: discharge flow path

170a: injection passage 171: injection hole

173: second filter 200: cleaner body

210: frame portion 215: guide duct

230: dust collecting unit 240: cyclone portion

250: dirt collection 273: first filter

300: return passage

The present invention relates to an upright type vacuum cleaner, and more particularly, to an upright type vacuum cleaner which collects dirt from a cyclone dust collecting unit by collecting dirt from a surface to be cleaned together with air through a suction nozzle unit, and filters and discharges the air to the outside.

In general, upright vacuum cleaners inhale dust and other dirt together with air from the outside by suction power generated inside the main body to perform cleaning of the surface to be cleaned such as floor or carpet.

Such a conventional upright vacuum cleaner includes a cleaner main body and a suction nozzle unit provided below the cleaner main body so as to be movable along the surface to be cleaned. In addition, the cleaner body is divided into a dust collecting device for collecting the dust sucked from the surface to be cleaned and a motor chamber in which the suction motor is installed below the dust collecting device. Such an upright type vacuum cleaner is mainly used to clean a large surface to be cleaned such as a floor or a carpet.

Recently, an upright type vacuum cleaner using exhaust reflux, which allows the exhaust generated from the vacuum cleaner to be sucked back into the vacuum cleaner without being discharged to the outside of the vacuum cleaner, has been proposed. The upright type vacuum cleaner using the exhaust reflux sucks air sucked together with the dirt from the surface to be cleaned through the suction nozzle part to the cleaner body, as described in Korean Utility Publication No. 20-144875 proposed by the applicant. The dirt is collected in the dust bag, and the air flows through the dust bag into the suction motor installed in the cleaner body and then discharged back to the suction nozzle part, so that the exhaust gas is continuously refluxed.

By the way, the conventional upright type vacuum cleaner using the exhaust reflux has a problem that the suction motor is installed in the cleaner body, not only is the cleaner body heavy but also bulky. For this reason, when the elderly are weak in strength compared to adults using the vacuum cleaner, there was a problem that can not be easily cleaned due to the heavy cleaner body.

In addition, since the suction motor is disposed at the rear end of the dust bag, the dust collected by the dust bag is often adsorbed to the part communicating with the suction motor, which frequently blocks or narrows the flow path of the suction air. This problem causes pressure loss and overloading of the suction motor, which in turn lowers the dust collection efficiency of the vacuum cleaner, thereby degrading the cleaning efficiency.

In order to solve the above problems, an object of the present invention is to provide an upright type vacuum cleaner using exhaust reflux to reduce the weight and volume of the cleaner body so that the vacuum cleaner can be used easily and easily when cleaning.

Another object of the present invention is to provide an upright vacuum cleaner using exhaust reflux which can improve the cleaning efficiency by improving the separation efficiency of the dirt contained in the intake air and increasing the collection efficiency of the dirt.

In order to achieve the above object, the present invention is provided with a suction motor on the inside, the suction nozzle unit for sucking the dirt of the surface to be cleaned by the suction port formed on the bottom through the suction force of the suction motor; And a cleaner body connected to the suction nozzle part to separate and collect the dirt introduced with the air into the suction port by the centrifugal force from the suction air, and to discharge the suction air separated from the dirt to the suction nozzle part. The air discharged from the cleaner body is injected through the suction motor of the suction nozzle part from the inside of the suction nozzle part toward the surface to be cleaned, and is then returned to the suction port of the suction nozzle part to be refluxed. Provide a cleaner. Thus, according to the present invention, since the heavy suction motor is disposed as the suction nozzle unit, the vacuum cleaner can be moved along the surface to be cleaned by easily manipulating the cleaner body without a great force during cleaning.

The cleaner body may have a lower end hinged to the suction nozzle part and a frame part having a handle on the upper end thereof; And a dust collecting unit installed in the frame portion, wherein the dust collecting unit has a cylindrical shape, and includes a cyclone unit having an inflow port for adding a turning force to the intake air flowed to one side; A dirt collection unit detachably coupled to a lower side of the cyclone unit to separate dirt from suction air from the cyclone unit and to collect dirt falling by gravity; And an exhaust pipe configured to vertically penetrate from the bottom surface of the waste collection unit and discharge the suction air separated from the dirt in the cyclone unit to the suction nozzle unit. In this case, it is possible to increase the collection rate of the dirt by maximizing the separation efficiency of the dirt from the intake air through the cyclone.

The frame part may form a guide duct communicating with the dust collecting unit and the suction nozzle part inside the lower end hinged to the suction nozzle part.

The filter may further include a first filter disposed between the exhaust pipe of the dust collector and the guide duct, thereby preventing fine dust from entering the suction motor, thereby preventing failure of the suction motor due to the fine dust. Can be.

The suction nozzle part; A motor chamber in which the suction motor is installed inside the housing; A discharge passage for guiding air discharged from the motor chamber to the front of the housing; An injection passage for injecting the discharged air guided through the discharge passage to the surface to be cleaned corresponding to the bottom of the housing; And at least one injection hole formed at an end of the injection passage. In this case, it is preferable that the injection passage is rounded with a predetermined curvature to the rear of the housing such that a plurality of injection holes are directed toward the suction port side. The suction nozzle unit may further include a second filter disposed on the injection passage to filter the air discharged from the motor chamber, and the suction nozzle unit is rotatably installed in the suction port and the suction motor. It may further include a rotary brush for peeling off the surface to be cleaned by hitting the driving force from the surface to be cleaned while the dirt stuck to the surface to be cleaned.

And a reflux passage for guiding the suction air including the dirt of the surface to be cleaned to the dust collecting unit together with the discharge air discharged from the suction nozzle portion, wherein the reflux passage, one end of the suction nozzle portion communicates with the suction port. First connector made; A flexible hose having one end connected to the first connecting pipe and exposed to the outside of the suction nozzle part; And a second connecting pipe having one end communicating with the flexible hose and the other end communicating with the dust collecting unit.

Hereinafter, a configuration of an upright vacuum cleaner using exhaust reflux according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing an upright vacuum cleaner according to an embodiment of the present invention, FIG. 2 is a side sectional view showing the vacuum cleaner shown in FIG. 1, and FIG. 3 is a schematic view showing an air circulation state of the vacuum cleaner. 4 is a schematic enlarged view showing a suction nozzle unit.

Referring to FIG. 1, the upright type vacuum cleaner 10 of the present invention includes a suction nozzle unit 100, a cleaner body 200 connected to the suction nozzle unit 100, a suction nozzle unit 100, and a cleaner body. A reflux passage 300 communicating with 200 is included. The vacuum cleaner 10 can move the vacuum cleaner easily and effortlessly by lightening the cleaner main body 200 by placing the entire center of gravity on the suction nozzle unit 100.

First, the suction nozzle unit 100 will be described with reference to FIGS. 2 and 3 as follows. The suction nozzle part 100, which serves to suck dirt of the surface to be cleaned while moving along the surface to be cleaned, includes a housing 110 and a suction motor 130.

The housing 110 has a motor chamber 111 in which the suction motor 130 is installed, and a front casing 113 covering the rotating brush 150 is formed in front of the motor chamber, in which case the rotating brush is formed. 150 is rotatably installed in the suction port 115 of the bottom of the housing (100). Wheels 190 are rotatably coupled to both sides of the housing 110 so that the suction nozzle unit 100 can smoothly move the surface to be cleaned.

In addition, as shown in FIG. 4, the housing 110 has a discharge passage 170 which guides the discharge air discharged from the motor chamber 111 to the front of the housing 110 on the upper side, and the discharge passage 170. Is connected to the injection brush flow path 170a for injecting the discharge air toward the surface to be cleaned from the front of the rotary brush 150 is formed. In this case, a plurality of injection holes 171 (see FIG. 3) are formed at the end of the injection flow path 170a closest to the surface to be cleaned, and the injection flow path 170a has a plurality of injection holes 171 facing the inlet 115. As it is rounded to a predetermined curvature toward the rear of the housing, the air discharged from the plurality of injection holes 171 is sprayed toward the surface to be cleaned corresponding to the bottom surface of the housing 110 so that dirt is scattered from the suction nozzle part ( 100) to prevent the outside to fly and at the same time induces to flow straight into the suction port (115).

The suction motor 130 serves as a suction source for sucking dirt on the surface to be cleaned, and also serves as a driving source for driving the rotary brush 150. The suction motor 130 is a rotary brush 150 through the driving belt 151 wound on both sides of one side of the drive shaft 131 and the rotary brush 150 of the suction motor 130 to serve as a driving source. Transmit driving force.

2 and 3, the cleaner body 200 includes a frame portion 210 and a dust collecting unit 230.

Frame portion 210 has a handle 211 is formed to move the vacuum cleaner 10 at the top, a pair of hinge coupling portion 213 which is hinged to the housing 110 of the suction nozzle unit 100 at the bottom Is formed. In this case, any one of the pair of hinge coupling portion 213 is formed with a guide duct 215 for communicating the exhaust pipe 260 to be described later and the motor chamber 111. In addition, the frame portion 210 is provided with a receiving portion 217, the dust collecting unit 230 is installed in the front.

The dust collecting unit 230 includes a cyclone unit 240, a waste collection unit 250, and an exhaust pipe 260. Cyclone portion 240 is formed in a substantially cylindrical shape, the inlet port 241 for adding a turning force to the intake air flowing through the reflux passage 300 on one side is horizontally formed in the tangential direction of the cyclone portion 240 . In addition, the grill filter 243 is disposed at the inner center of the cyclone unit 240 to prevent the dirt of a predetermined size contained in the suction air separated from the dirt by centrifugal force being sucked into the suction motor 130. In this case, the grill filter 243 has a skirt portion adjacent to the inner circumferential surface of the cyclone portion 240 along a lower outer circumference so as to prevent the backdrop from falling into the cyclone portion 240. 245 is extended.

The dirt collection unit 250 is detachably coupled to the lower side of the cyclone unit 240 so as to separate the dirt from the suction air by the centrifugal force from the cyclone unit 240 and then collect the dirt falling by gravity.

The exhaust pipe 260 vertically along the inner center of the waste collection unit 250 from the bottom of the waste collection unit 250 to discharge the suction air passing through the grill filter 243 toward the suction nozzle unit 100 side. The upper end of the grill filter 243 communicates with the lower end of the grill filter 243. In this case, as the first filter 273 is disposed between the lower end of the exhaust pipe 260 and the guide duct 215, the air discharged through the exhaust pipe 260 is filtered and the motor chamber is provided through the guide duct 215. Inflow to (111). The first filter 273 is accommodated in the filter case 271 detachably coupled to the frame portion 210.

In addition, in order to again filter the air filtered by the first filter 273 to the discharge flow path 170 from the motor chamber 111 via the suction motor 130, as shown in Figure 4, the discharge flow path The second filter 173 may be disposed on the 170. For example, the second filter 173 may employ a hepa filter to filter fine dust.

Referring to FIG. 2, the reflux passage 300 guides the suction air including the dirt on the surface to be cleaned to the dust collecting unit 230 together with the discharged air discharged from the suction nozzle part 100. The reflux passage 300 includes a first connector 301, a flexible hose 303, and a second connector 305.

One end of the first connection pipe 301 communicates with the suction port 115 and the other end is disposed behind the housing 110. One end of the flexible hose 303 is connected to the other end of the first connection pipe 110 and the other end is connected to one end of the second connection pipe 305. When the flexible hose 303 pivots the cleaner body 200 up and down around the hinge coupler 213 during cleaning, the frame part 210 can be smoothly rotated by the cleaner body 200. The hinge coupling portion 213 is disposed around. The other end of the second connecting pipe 305 is connected to the inlet port 241 of the cyclone part 240. In the present embodiment has been described as an example using a flexible hose only a part of the reflux passage 300, but is not limited to this, of course, it is also possible to use a hose that is flexible to the entire reflux passage.

In addition, in the present embodiment, the air discharged through the injection hole has been described in most of the configuration circulating the vacuum cleaner 10, but is not limited to this, the interior of the housing 110 due to the heat generated by the heat of the suction motor 130 It is also possible to configure to form an opening (not shown) that can selectively open some of the discharge passage 170 to prevent the temperature rises excessively.

The attached reference numeral 101 of FIG. 1 is a confirmation window that can visually check the state of the rotary brush 130, and 180 is a carpet due to the rotary brush 130 which is rotated by raising and lowering the suction nozzle unit 110. It is a height adjustment knob to prevent damage to the back, 280 is a lifting lever for pressing or releasing the dirt collector 250 to the cyclone portion 240.

Referring to Figures 3 and 4 the operation of the upright type vacuum cleaner using the exhaust reflux according to an embodiment of the present invention configured as described above are as follows.

First, when power is applied to the vacuum cleaner 10, the suction motor 130 installed in the suction nozzle unit 100 is driven while the suction force is generated between the suction port 115 of the suction nozzle unit 100 and the surface to be cleaned. Suction air is introduced into the suction port 115 together with the dirt of the cleaning surface.

The suction air including the dirt introduced into the suction port 115 is introduced into the cyclone part 240 of the dust collecting unit 230 through the reflux passage 300. At this time, the suction air obtained by the turning force while passing through the inlet port is separated from the dirt by centrifugal force, and then flows into the exhaust pipe 260 through the grill filter 243. In this case, the dirt separated from the intake air falls by gravity and is collected in the dirt collection unit 250.

Subsequently, the suction air introduced into the exhaust pipe 260 is filtered while passing through the first filter, and then flows into the suction motor 130 of the motor chamber 111 through the guide duct 215. Thereafter, the suction air is discharged from the suction motor 130 to the motor chamber 111, and the discharge air is guided to the injection passage 170a via the discharge passage 170.

When the discharged air guided to the injection flow path 170a is sprayed to the surface to be cleaned through the plurality of injection holes 171, the dirt of the surface to be cleaned may be scattered, especially the dirt deeply embedded in the pile, such as carpet, to improve the suction efficiency of the soil. have.

On the other hand, as the air discharged to the surface to be cleaned is introduced into the suction port 115 of the suction nozzle unit 100 again, the suction air is continuously refluxed in the vacuum cleaner (10).

In the present invention as described above, by placing the suction motor in the lower portion of the vacuum cleaner, that is, the suction nozzle portion, it is possible to reduce the weight and volume of the vacuum cleaner body, even if the elderly weak weak muscles compared to adults during cleaning, easy There is an advantage that a vacuum cleaner can be used.

In addition, by providing a dust collecting unit for collecting the dirt in a cyclone method, it is possible to maximize the separation efficiency of the dirt contained in the suction air to increase the cleaning efficiency.

Furthermore, by blocking the air sucked into the vacuum cleaner when the cleaning is discharged to the outside of the vacuum cleaner, it is possible to eliminate the discomfort felt by the user due to the odor contained in the exhaust.

While the invention has been shown and described in connection with preferred embodiments for illustrating the principles of the invention, the invention is not limited to the construction and operation as shown and described. That is, those skilled in the art to which the present invention pertains will appreciate that many changes and modifications can be made to the present invention without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

Claims (9)

A suction nozzle unit having a suction motor on the inner side and suctioning dirt on the surface to be cleaned by a suction port formed on a bottom surface through a suction force of the suction motor; And, And a cleaner body connected to the suction nozzle part to separate and collect dirt introduced into the suction port together with air from the suction air by centrifugal force, and discharge the suction air separated from the dirt to the suction nozzle part. The air discharged from the cleaner main body is refluxed by being injected toward the surface to be cleaned from the inside of the suction nozzle part via the suction motor of the suction nozzle part and then flowing back into the suction port of the suction nozzle part, The suction nozzle unit housing; A motor chamber in which the suction motor is installed inside the housing; A discharge passage for guiding air discharged from the motor chamber to the front of the housing; An injection passage for injecting the discharged air guided through the discharge passage to the surface to be cleaned corresponding to the bottom of the housing; At least one injection hole formed at an end of the injection passage; And a hepa filter disposed on the injection flow path to filter the air discharged from the motor chamber. The method of claim 1, wherein the cleaner body A frame part having a lower end hinged to the suction nozzle part and having a handle formed at an upper end thereof; And, And a dust collecting unit installed in the frame unit. The dust collecting unit A cyclone portion formed in a cylindrical shape and having an inflow port for adding a turning force to the intake air flow on one side; A dirt collection unit detachably coupled to the lower side of the cyclone unit to separate dirt from the intake air from the cyclone unit and to collect dirt falling by gravity; And, And an exhaust pipe configured to vertically penetrate from the bottom of the waste collection portion and discharge the suction air separated from the dirt in the cyclone portion to the suction nozzle portion. The method of claim 2, wherein the frame portion An upright vacuum cleaner, characterized in that to form a guide duct to communicate with the dust collecting unit and the suction nozzle inside the lower end hinged to the suction nozzle. The upright vacuum cleaner according to claim 3, further comprising a first filter disposed between the exhaust pipe of the dust collector and the guide duct. delete The upright vacuum cleaner according to claim 1, wherein the jet passage is rounded at a predetermined curvature to the rear of the housing such that a plurality of jet holes are directed toward the suction port side. delete The method of claim 1, wherein the suction nozzle unit The upright type vacuum cleaner is rotatably installed in the suction port, and further includes a rotary brush for removing dirt from the surface to be cleaned by applying a driving force from the suction motor to rotate the dirt stuck to the surface to be cleaned. The method of claim 2, further comprising a reflux passage for guiding the suction air including the dirt on the surface to be cleaned to the dust collecting unit together with the discharge air discharged from the suction nozzle unit, The reflux passage, A first connection pipe having one end communicated with the suction port in the suction nozzle part; A flexible hose having one end connected to the first connecting pipe and exposed to the outside of the suction nozzle part; And, Upstream type vacuum cleaner comprising a; one end is in communication with the flexible hose and the other end is in communication with the dust collecting unit.

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