KR20120100486A - Carpet cleaner - Google Patents

Abstract

PURPOSE: A carpet cleaner is provided to remarkably improve cleaning efficiency by sucking dust or water when a carpet is pulled or pushed. CONSTITUTION: A carpet cleaner comprises a rotary brush, a cleaning solution, a suction motor(400), and front and rear suction ducts. The cleaning solution is supplied to the rotary brush. The suction motor sucks the cleaning solution mixed with dust on a carpet to a water collecting container through the front and rear suction ducts and transfers rotation power to the rotary brush. The front and rear suction ducts are arranged on the front and rear of the rotary brush.

Description

Carpet cleaner

The present invention relates to a carpet cleaner having a suction nozzle before and after the rotary brush to suction or pull back and forth to ensure a good cleaning efficiency.

As a carpet cleaner conventionally, what is known in a patent document is proposed.

As shown in FIG. 16, a conventional carpet cleaner is coupled to a handle body 1 disposed along an up-down direction, and is coupled to a lower end of the handle body 1 to be disposed in a horizontal direction and spaced at a rear end at a predetermined distance. The main head (2) is coupled to the movement wheel (9) of the water supply tank (4), which is disposed on the front upper side of the handle body (1) is stored cleaning solution (3) mixed with detergent and wash water and And a water collecting container 7 for collecting the contaminated water 6 disposed under the water supply container 4 and sucked in the cleaning area.

In front of the lower surface of the main head 2, an agitator 12, which is rotated by a motor (not shown) and sweeps out the dust stuck on the carpet 11, is installed, and in the water supply tank 4 The other end of the water supply pipe 13 to which one end is connected is disposed above the edge data 12, and the cleaning solution 3 of the water supply container 4 is pumped to a predetermined position of the water supply pipe 13 by The pump 14 for injecting to the edge data 12 side is provided.

A suction nozzle 16 is coupled to the front of the main head 2 to suck water from the carpet 11 into the sump 7, and one end of the main head 2 is connected to the inside of the main head 2. It is connected to the sump (7) and the other end is disposed to face the bottom is provided with an exhaust pipe 17 for exhausting the air sucked in the sump (7), the predetermined portion of the exhaust pipe (17) A fan-motor 18 for discharging air from the sump 7 through the exhaust pipe 17 is coupled to the suction nozzle 16 so as to generate a suction force.

On the lower surface of the main head 2 where the outlet side of the exhaust pipe 17 is located, a heater seating portion 2a is formed so as to be recessed inward as shown in FIG. 17, and inside the heater seating portion 2a. A heater 20 for heating the air discharged to the outlet side of the exhaust pipe 17 is provided.

Referring to Figure 16, the operation of the conventional carpet cleaner configured as described above is as follows.

When the cleaning is started, the pump 14 is operated so that the cleaning solution 3 stored in the water supply tank 4 is injected through the water supply pipe 13 to the carpet 11 where the edge data 12 is rotated. When the cleaning solution 3 is sprayed on the carpet 11, the edge data 12 is rotated to wash away the dust or foreign matter stuck to the carpet 11.

Then, the fan-motor 18 is operated and the contaminated water washed by the suction force generated in the suction nozzle 16 is sucked into the sump 7, and the air sucked into the sump 7 together with the contaminated water is It is discharged to the floor through the exhaust pipe (17).

In addition, when the air of the sump 7 is discharged to the outside through the exhaust pipe 17 as described above, the air is heated by the heater 20 installed on the outlet side of the exhaust pipe 17, and thus heating Since the air is blown onto the carpet 11 in a hot air state, water on the carpet 11 is dried.

However, the conventional carpet cleaner has the following problems.

First, the air sucked from the fan-motor 18 is sent to the heater 20 to heat the air, and the air is dried, and there is a high possibility that the heater 20 is shorted because the air is contained therein.

Second, when spraying the cleaning solution 3 toward the edge data 12 of the rotary brush with the pump 14, it is necessary to spray evenly in the longitudinal direction of the rotation axis of the edge data 12 to increase the cleaning efficiency of the carpet. However, since the pumping capacity of the pump 14 is very large for the even injection of the edge ether 12, it is very inefficient in terms of occupying a lot of occupying space and being expensive, and thus the edge data 12 in the form of a single injection nozzle tube is required. Spraying only near the longitudinal center of) decreases cleaning efficiency.

Third, since the suction nozzle 16 is disposed only in front of the edge data 12, there is a high risk of less suction of dust and water when the carpet cleaner is pushed back and forth.

Korean Laid-Open Patent Publication No. 2005-007806

The present invention has been made to solve the above problems, to improve the structure of the suction nozzle so that it can be placed before and after the rotary brush to provide a carpet cleaner that can reliably perform the suction of dust or moisture when the front and rear push or pull. The purpose is.

In order to achieve the above object, the carpet cleaner according to claim 1 of the present invention,

Rotary brush; A cleaning liquid supplied toward the carpet in front of or behind the rotary brush or towards the rotary brush; A suction motor which transfers rotational power to the rotary brush while suctioning the liquid in which the cleaning liquid and the dust of the carpet are mixed by the rotary brush into a water collecting tank; Including; a front suction duct and a rear suction duct disposed before and after the rotary brush;

The liquid is suctioned to the sump via the front suction duct and the rear suction duct.

According to the structure of this Claim 1, when cleaning while pushing and pulling back and forth, less suction of dust or moisture can be prevented, and washing efficiency can be improved significantly.

Carpet cleaner according to claim 2 of the present invention,

The rear suction duct is branched from the front suction duct, and the branch point of the rear suction duct is preferably supported by the motor casing of the suction motor.

According to the second aspect of the present invention, since the front and rear ducts are arranged in a branched form, they occupy less overall space than each connected in the sump, and the branch points are supported by the casing of the suction motor, so that both sides together with the rear suction nozzles are provided. It is supported stably and the sealing effect of the branch point is better.

According to a preferred embodiment of the present invention has the following effects.

Since the front suction duct and the rear suction duct are disposed before and after the rotating brush, the cleaning efficiency can be remarkably increased by blocking suction of less dust or moisture when cleaning by pushing and pulling back and forth.

In addition, since the front and rear ducts are arranged in a branched form, they occupy less overall space than connected in the sump, and the branch points are supported by the casing of the suction motor, so that they are stably supported on both sides together with the rear suction nozzles. The sealing effect is also better.

In addition, by simultaneously driving the rotary brush and the blower fan with one suction motor, it is possible to implement a compact carpet of the device while preventing the short due to moisture by blowing the outside wind to the heating member to implement a stable carpet drying.

In addition, by using a dedicated drying dryer stably, by increasing the temperature of the first exhaust vent and detergent liquid responsible for the dedicated drying function of the carpet, the detergent is released well, and when washing with a rotary brush, it is possible to obtain a better washing effect. Can branch to a second vent that also functions as a drying function.

In addition, since the front and rear rotary brush rubs the carpet to further double the washing efficiency, and in particular, since the rotary fan receives the rotational power, the suction brush can drive two rotary brushes and the blower fan at the same time.

In addition, by further spraying the cooling exhaust wind of the suction motor to the carpet, it helps to dry the wet carpet to further increase the cleaning efficiency.

In addition, by adding the suction exhaust wind of the suction motor to the pumping pressure of the pump, the volume of the main body is not increased, and the volume of the main body is made compact, while the detergent is evenly sprayed in the longitudinal direction of the rotating shaft of the rotating brush to make the carpet contact area of the carpet. It can increase washing efficiency.

1 is an external perspective view of a carpet cleaner according to a preferred embodiment of the present invention.
2 is a cross-sectional view taken along line 2-2 of FIG.
3 and 4 are combined and disassembled perspective views of the base assembly of FIG. 1.
5 and 6 are left and right perspective views showing a state in which the upper case of Figure 3 is removed.
7 is a perspective view illustrating a state in which the suction duct is removed from FIG. 5.
8 is a bottom perspective view of FIG. 6.
9 is a perspective view illustrating a state in which the base of FIG. 8 is removed.
10 is a perspective view of the dryer;
FIG. 11 is a sectional view taken along line 11-11 of FIG. 10; FIG.
Figure 12 is a side view showing the appearance of the suction motor.
Figure 13 is a bottom perspective view of the front suction duct.
14 is a bottom perspective view of the detergent spray nozzle;
15 is a schematic view showing a route for spraying detergent.
16 is a cross-sectional view showing a conventional carpet cleaning.
17 is a bottom view of FIG. 16.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is an external perspective view of a carpet cleaner according to a preferred embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. 1, and FIGS. 3 and 4 are combined and illustrating the base assembly of FIG. 1. 5 and 6 are left and right perspective views showing a state in which the upper case of FIG. 3 is removed, FIG. 7 is a perspective view showing a state in which the suction duct is removed in FIG. 5, and FIG. 8 is a bottom perspective view of FIG. 6. 9 is a perspective view illustrating a state in which the base of FIG. 8 is removed, FIG. 10 is a perspective view illustrating a dryer, FIG. 11 is a sectional view taken along line 11-11 of FIG. 10, and FIG. 12 is a view of a suction motor. Figure 13 is a side view showing the appearance, Figure 13 is a front perspective view of the front suction duct, Figure 14 is a bottom perspective view showing a detergent spray nozzle, Figure 15 is a schematic diagram showing a path for spraying detergent.

Carpet cleaner according to an embodiment of the present invention, as shown in Figures 1 and 2, consists of a base assembly 10, a handle assembly 30 that is rotatably installed in the base assembly 10.

The base assembly 10 includes a main body 100 forming an outer shape, a collecting container 200 detachably mounted to the main body 100, a rotating brush 300 rotatably installed in the main body 100, and dust. B. A suction motor 400 for suctioning a liquid mixed with moisture or dust to the water collecting container 200 through the suction duct 250, a dryer 500 mounted in the main body 100, and a suction motor 400. It consists of a first power transmission member 470 and the second power transmission member 480 to provide a rotational power of the rotary brush 300 and the dryer 500.

The main body 100 includes a base 110 and an upper case 130.

A mounting groove 131 on which the suction duct 250 is seated is formed above the upper case 130 as shown in FIG. 3.

Ventilation openings 134 are formed at one side of the upper case 130 as shown in FIG. 1 to allow external air to flow mainly into the main body 100.

At the rear of the upper case 130, a receiving groove 133 is formed to receive the water collecting container 200 in a detachable manner.

Side guide protrusions 135 are formed at both sides and the bottom of the receiving groove 133 as shown in FIG. 3, and the side guide grooves 235 are inserted into the water collecting container 200 and guided to the side guide protrusions 135. Formed.

By this configuration, the sump 200 is slidable only from the top to the bottom of the receiving groove 133 and restrained in other directions to be stably mounted.

In addition, at both rear sides of the upper case 130, the mounting bushes 139 to which the wheels 150 and the neck 900 of the handle 30 are rotatably mounted are formed.

In addition, the through hole of the mounting bush 139 serves as a passage to allow the detergent supply tube of the pump 800 and the cable of the PCB 650 to be drawn out into the main body 100.

The front of the suction duct 250 is fastened to the front of the base 110, the fastening rib 255 is formed on the rear of the suction duct 250 as shown in Figure 13, the fastening formed on the rear side of the seating groove 131 It fits into the ball 141 and is joined by the piece. The rear of the suction duct 250 is in contact with the suction suction opening 210 of the sump 200 by the sealing 143.

The front of the suction duct 250 constitutes a suction nozzle 251, and suctions dust or moisture through the suction nozzle 251 to the water collecting container 200 through the suction duct 250 and the suction suction opening 210. Collecting, the suction air is discharged through the suction exhaust (220).

The suction nozzle 251 constitutes a front suction nozzle 251 disposed just in front of the rotary brush 300.

In addition, the inclination plate 253 is preferably provided at the foremost end of the suction nozzle 251 to increase the inclination angle toward the front.

The inclined plate 253 has the effect of laying the fur of the carpet forward, thereby preventing the narrow suction nozzle 251 from being blocked by the jaws of the carpet.

In addition, it is preferable that a rear suction duct 260 having a rear suction nozzle 261 is further provided immediately behind the rotary brush 300.

The rear suction nozzle 261, which is the front end of the rear suction duct 260, is fastened to the base 110, and the rear end 265 of the rear suction duct 260 is formed on the bottom surface of the rear end side of the front suction duct 250. It is connected to the suction branch hole (257).

That is, the rear end 265 of the rear suction duct 260 is fitted into the through hole 132 formed in the seating groove 131 and is connected to the rear end of the rear suction duct 260.

Due to the branching structure of the suction duct, the front suction duct 250 is disposed outside the main body 100, and the rear suction duct 260 is disposed within the main body 100.

The arrangement of the front and rear suction nozzles 251 and 261 completely eliminates the section for less suction when the carpet cleaner is pushed back and forth, thereby significantly increasing the cleaning efficiency.

On the other hand, since the rear end 265 of the rear suction duct 260 is inserted into the through hole 132, the support formed in the suction motor casing 410 of the suction motor 400 described later to prevent falling down It is desirable to take a structure supported by the ribs 450.

By branching and suctioning the suction ducts 250 and 260 inside and outside, it contributes to the compactness of the main body 100 while simplifying the connection structure with the sump 200.

The rotary brush 300 is rotatably mounted on the lower surface of the mounting bracket 111 of the base 110. Mounting bracket 111 is preferably made of a semi-circular cross section.

The rotary brush 300 and the suction motor 400 are connected by the first power transmission member 470.

As shown in FIG. 6, the first power transmission member 470 includes a first driving pulley 471 installed at one end of the rotation shaft 401 of the suction motor 400 and one end of the rotation shaft 301 of the rotation brush 300. And a first belt 475 which connects the first driven pulley 473 and the first driven pulley 471 and the first driven pulley 473 to each other.

On the other hand, the dryer 500 is a device installed in the main body 100 to inject the heating air to the carpet, as shown in Figs. 6, 10 and 11 to the blowing fan 510 and the blowing fan 510 The heating member 530 for heating the blowing air, and the second power transmission member 480 for transmitting the rotational power of the suction motor 400 to the blowing fan 510.

A rotating shaft 511 is provided on the blowing fan 510, and the rotating shaft 511 is supported by the first bearing support 513 and the second bearing support shaft 515.

The blowing fan 510 is disposed in the fan casing 516 fastened to the inlet port 541 side of the flow passage 540 to be described later, and the second bearing support shaft 515 is the suction inlet port of the fan casing 516 ( 518 is rotatably supported.

The heating member 530 includes a flow path tube 540 having an inlet port 541 and an exhaust port 543, and a heater (or heating wire) 550 disposed in the flow path tube 540 between the inlet port 541 and the exhaust port 543. ).

The second power transmission member 480 includes a second driving pulley 481 installed on the same rotation shaft 401 of the suction motor 400 and a second driven pulley installed on the rotation shaft 511 of the blowing fan 510. 483 and a second belt 485 connecting the second driving pulley 481 and the second driven pulley 483.

Therefore, when the blower fan 510 is rotated by the driving of the suction motor 400, the outside air is sucked into the suction inlet 518 of the fan casing 516, and the suction port 541 and the heater of the flow path pipe 540. The air is heated via 550 and then exhausted to an exhaust port 543.

Since the exhausted air is blown toward the bottom of the carpet, the damp carpet is not only dried quickly but also sucks and heats outside air to prevent shorting of the heater 550 due to moisture.

In particular, since one suction motor 400 implements both the suction, the rotation brush 300, and the rotation of the blowing fan 510 simultaneously, a separate driving motor for driving the blowing fan 510 is not required.

Since the driving (rotation) of the blower fan 510 does not require particularly large force, the blower fan 510 receives the rotational power from the rotary shaft 401 of the suction motor 400 for rotating the rotary brush 300 as it is. ) Is enough.

In particular, in the present embodiment, the exhaust port 543 is a lower surface between the first exhaust port 545 for exhausting the heating air directly below the flow path tube 540, and the front suction nozzle 251 and the front rotary brush 300. Branched to the second exhaust duct 547 for inducing heating air.

That is, the first exhaust vent 545 is a dry exhaust vent dedicated to the carpet, and the second exhaust vent 547 heats the detergent liquid when the detergent liquid (or washing liquid) sprayed on the rotary brush 300 is on the carpet to heat the temperature. It increases the washing efficiency of the carpet, which also serves as a drying function. (While washing in hot water rather than washing in cold water will have some effect that the detergent will dissolve better)

For this function distribution, the first exhaust port 545 has a larger cross section than the second exhaust port 547, so that 60 to 70% of the heating air is the first exhaust port 545, and 40 to 30% is the second exhaust port. It is desirable to exhaust to 547.

The first exhaust duct 546 fastened to the base 110 is integrally formed in the first exhaust duct 545, so that the heating air of the first exhaust duct 545 is sprayed in a wide range.

The first exhaust duct 546 is provided with support supports 546a and 546b for supporting and supporting the pan casing 516 and the first bearing support 513.

The second exhaust duct 547 is connected to the second exhaust duct 548 fastened to the base 110 by a tube (not shown).

On the other hand, the rear rotation brush 310 is further installed at the rear of the base 110, the rear rotation brush 310 is the rotational power of the rotation shaft 511 of the blowing fan 510 by the third power transmission member 490. It is desirable to receive.

It is preferable that the rear rotary brush 310 also has a semicircular cross section rotatably installed on the mounting bracket 113.

The third power transmission member 490 is the third drive pulley 491 is installed on the same rotation shaft 511 of the blowing fan 510, and the third driven pulley is installed on the rotation shaft 311 of the rear rotation brush (310). 493 and a third belt 495 connecting the third driving pulley 491 and the third driven pulley 493.

As such, the suction motor 400 may simultaneously drive the front and rear rotation brushes 300 and 310 and the blowing fan 510 through the suction operation.

Therefore, even if the apparatus is downsized, the front and rear rotary brushes 300 and 310 simultaneously rub the carpet, thereby increasing the cleaning efficiency of the carpet.

The suction motor 400 includes a suction motor casing 410 equipped with a suction impeller (not shown), a motor part (not shown), an impeller and a motor part as shown in FIG. 12.

The motor part (not shown) is comprised by the drive motor 403 which rotationally drives an impeller, and the cooling fan (not shown) which cools this drive motor 403. FIG.

The suction motor casing 410 includes an impeller casing 430 surrounding the impeller and a motor casing 440 surrounding the motor unit.

The motor casing 440 includes an air inlet 441 and an air outlet 443 through which air is introduced from the outside.

In addition, the above-described support rib 450 is integrally formed on the upper outer peripheral surface of the motor casing 440.

In the motor unit, a cooling fan (not shown) is mounted to cool the motor 403. The cooling fan is installed on the same rotation shaft 401 of the driving motor 403 and enters the ventilation hole 134 by the rotation of the cooling fan. After the air is introduced into the air inlet 441, the warm heated air cooled while passing through the inside of the driving motor 403 is discharged to the air outlet 443.

Since the heated air discharged to the air outlet 443 is also heated to a higher temperature than the outside air, spraying the base 110 to the floor may also be responsible for the drying function of the carpet.

A suction inlet 431 and a suction outlet 433 are formed in the impeller casing 430.

The suction inlet 431 communicates with each other through the suction exhaust pipe 220 of the sump 200 through a connection pipe 435 formed in the upper case 130.

Therefore, when the suction motor 400 is driven, the dust or moisture is sucked through the suction nozzle 251 or / and 261 by the rotation of the impeller through the suction duct 250 or / and 260, suction suction port 210 Inflow to the sump 200, the air in the sump 200 goes to the suction exhaust port 220, the connection pipe 435, suction inlet 431 and suction outlet 433.

In particular, the suction exhaust (or suction exhaust wind) coming out of the suction outlet 433 may cause the washing liquid pumped by the pump 800 to be described later toward the carpet or in front of or behind the rotary brush 300 or / and 310. Sprayed toward 300 or / and 310 to cause scattering.

The front detergent spray nozzle 710 is fastened and installed on the upper surface of the mounting bracket 111 of the base 110 having the front rotating brush 300, and the mounting bracket 113 of the base 110 having the rear rotating brush 310. The rear detergent spray nozzle 730 is disposed on the upper surface.

Long holes 112 and 114 are installed in the mounting brackets 111 and 113 in the longitudinal direction of the rotating shaft, and the detergent passes through the long holes 112 and 114 to spray the rotating brushes 300 and 310. do.

The detergent spray nozzles 710 and 730 are connected to nozzle dispensing ducts 711 and 731 which are fastened to be disposed in the long holes 112 and 114, and nozzle dispensing ducts 711 and 731 as shown in FIG. It consists of the nozzle inlets 713 and 733 formed.

On the lower surface of the nozzle distribution ducts 711 and 713, a plurality of nozzle holes 712 and 732 are arranged in the longitudinal direction at predetermined intervals.

The longitudinal arrangement of the nozzle holes 712 and 732 has a direction that can evenly spray the detergent over the longitudinal direction of the rotary brush 300, 310, it can further double the cleaning effect of the carpet.

However, in order to spray detergent to the plurality of nozzle holes 712 and 732 at the pumping pressure of the pump 800, the pumping pressure of the pump 800 should be very high. It is not preferable in terms of the cost of occupying and the unit price.

In order to solve this problem, the above trouble can be eliminated by adding the suction exhaust wind to the suction outlet 433 to the pump pressure of the pump 800.

That is, as shown in FIG. 15, the pump 800 is connected to the nozzle inlets 713 and 733 by a tube or the like. By connecting the suction outlet 433 to the tube by connecting the tube, the pressure of the suction exhaust wind is pumped. The detergent may be sprayed to the plurality of nozzle holes 712 and 732 smoothly.

As shown in FIG. 8, the base 110 has first and second through holes 115 and 116 through which the first and second heating exhaust winds from the first exhaust duct 546 and the second exhaust duct 548 pass. ), A third passage passage 117 through which cooling air wind from the air discharge port 443 passes.

On the other hand, the handle assembly 30 is a housing 600, a detergent container 700 detachably installed in the housing 600, a pump 800 mounted in the housing 600, the housing 600 and the main body It consists of a neck (900) for rotatably connecting the (110).

The housing 600 is formed by fastening the front housing 610 and the rear housing 630.

A neck 900 is installed at the bottom of the housing 600, and a handle rod 670 is installed at the top of the housing 600.

The pump 800 is mounted in the housing 600.

In addition, a PCB 650 is mounted in the housing 600, and controls driving of the pump 800, the suction motor 400, and the dryer 500.

The detergent container 700 is detachably mounted on the outer circumferential surface of the rear housing 630.

The pump 800 pumps the detergent liquid of the detergent container 700 and injects it into the front and rear detergent spray nozzles 710 and 730.

At this time, by adding a suction exhaust wind from the suction outlet 433 further spray the detergent liquid to the front and rear detergent spray nozzles (710, 730) nozzles 712 formed in the longitudinal direction by the small pump (800) ( 732) can be evenly forced spraying.

In addition, in the present embodiment, the power for driving the suction motor 400 and the dryer 500 and the power of the pump 800 are configured separately and can be used only when a detergent is to be used.

When the pump 800 is not in operation, the dryer 500 functions as a dryer to make the hair of the carpet stand well with the rotary brushes 300 and 310. (This combs the hair while drying with a dryer to make the hair in a desired shape. Same principle).

As described above, although described with reference to a preferred embodiment of the present invention, the present invention can be variously modified or modified without departing from the spirit and scope of the present invention described in the claims Those skilled in the art will appreciate.

For example, the detergent of the detergent container of the present invention may be a washing liquid in which detergent liquid and washing water are mixed, or the detergent liquid itself may be used as the washing liquid.

10: base assembly 100: main body
110: base 111,113: mounting bracket
112,114: long hole 115,116,117: through hole
130: upper case 131: seating groove
132: through hole 133: receiving groove
134: vent hole 135: side guide projection
139: mounting bush 141: fastening hole
143: sealing 150: wheels
200: reservoir 210: suction inlet
220: suction exhaust 235: side guide groove
250: (front) suction duct 251: (front) suction nozzle
253: inclined plate 255: fastening rib
257: suction branch 260: (rear) suction duct
261: (rear) suction nozzle 300: (front) rotating brush
301: rotation axis 310: rear rotation brush
311: rotating shaft 400: suction motor
401: rotating shaft 403: drive motor
410: suction motor casing 430: impeller casing
431: suction inlet 433: suction outlet
435 connector 440 motor casing
441: air inlet 443: air outlet
450: support rib
470,480,490: 1st, 2nd, 3rd power transmission member 471,481,491: 1st, 2nd, 3rd driving pulley
471,483,493: 1,2,3 driven pulley 471,485,495: 1,2,3 belt
500: dryer 510: blowing fan
511: rotating shaft 513: first bearing support
515: second bearing support shaft 516: pan casing
518: suction inlet 530: heating member
540: flow path 541: intake vent
543: exhaust port 545: first exhaust port
546: first exhaust duct 546a, 546b: support
547: secondary exhaust 548: secondary exhaust duct
550: heater (heating wire) 30: handle assembly
600: housing 610,630: front and rear housing
650: PCB 650: handle rod
700: detergent bottle 710, 730: front and rear detergent spray nozzle
711,731 nozzle distribution duct 712,732 nozzle
713,733: Nozzle Inlet 800: Pump
900: neck

Claims (2)

Rotary brush;
A cleaning liquid supplied toward the carpet in front of or behind the rotary brush or towards the rotary brush;
A suction motor which transfers rotational power to the rotary brush while suctioning the liquid in which the cleaning liquid and the dust of the carpet are mixed by the rotary brush into a water collecting tank;
Including; a front suction duct and a rear suction duct disposed before and after the rotary brush;
And the liquid is suctioned into the sump via the front suction duct and the rear suction duct.
The method of claim 1,
The rear suction duct is branched from the front suction duct,
A branch cleaner of the rear suction duct is supported by the motor casing of the suction motor.

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