KR101369220B1 - Suction Brush of Vacuum Cleaner for both Vacuum Cleaning and Steam Cleaning - Google Patents

Abstract

A suction brush of a steam-type vacuum cleaner is disclosed. The suction brush is connected to a cleaner main body having a suction motor and a dust collecting unit. The brush brush sucks dirt on the surface to be cleaned together with air through a suction force generated by the suction motor and guides the dust to the dust collecting unit. A steam generating unit for spraying steam generated by heating water supplied from a water reservoir coupled to the brush body onto a surface to be cleaned; A turbine fan installed in the brush body and generating a rotational force by intake air flowing into the brush body; A power transmission unit driven by the rotational force of the turbine fan; And at least one pair of wiper rotating plates disposed under the suction brush and rotated by the power transmitted through the power transmitting unit, wherein at least a pair of wiper rotating plates have a pair of wiper blades And is detachably coupled to the power transmitting unit.

Vacuum cleaning, Steam cleaning, Rotating mop plate, Prevention of overheating, Instant heating

Description

[0001] The present invention relates to a suction brush for a steam-type vacuum cleaner,

1 is an exploded perspective view showing a suction brush of a vacuum cleaner combined with steam according to an embodiment of the present invention;

Fig. 2 is a schematic plan view showing the inside of the suction brush shown in Fig. 1,

Fig. 3 is a schematic perspective view showing a turbine fan and a power transmission unit provided inside the cover shown in Fig. 2,

FIG. 4 is a side view showing a suction brush of a steam vacuum cleaner according to an embodiment of the present invention, FIG.

Fig. 5 is a perspective view showing another example of the engagement between the mop supporting plate and the pinion shown in Fig. 4,

6 is a partially enlarged sectional view showing a state in which the suction brush is mounted and detached,

FIG. 7A is a plan view showing the heater unit shown in FIG. 2,

Fig. 7B is a bottom view showing the heater unit shown in Fig. 2,

FIG. 8A is a side sectional view showing the heater unit shown in FIG. 2,

FIG. 8B is a plan view showing a state where the upper housing and the heating body of the heater shown in FIG. 2 are removed.

* Explanation of key parts in the drawing *

10: brush body 11: upper body

13: lower body 20: turbine fan

30: Power transmission unit 41: First wiper rotating plate

42: second mop swing plate 50: water reservoir

60: steam generating unit 61: micro pump

63: heater part 64: upper case

64a: Inflow pipe 65: Lower case

65a: U-shaped guide groove 65b: injection hole

65c: injection nozzle 71: temperature control device

73: Overheat prevention device 75: Thermal fuse

More particularly, the present invention relates to a suction brush for a steam-type vacuum cleaner capable of performing steam cleaning by spraying steam on a surface to be cleaned and wiping with a mop, in addition to vacuum cleaning using a suction force.

In general, a vacuum cleaner is a canister type vacuum cleaner in which a main body and a brush are separated from each other and connected to a connection pipe by a flexible hose, and a brush connected to the connection pipe by a flexible hose It absorbs dust and other foreign substances and is cleaned.

The conventional vacuum cleaner collects the dust on the surface to be cleaned by the suction brush using the suction force generated by the suction motor in the main body. The suction air absorbed by the dust collects the dust contained in the suction air, And then discharged to the outside.

However, since the vacuum cleaner is only cleaned by the suction force, there is a problem that it is difficult to remove when it is stained or tied on the floor, tile, or window gaps. There was.

In order to solve such a problem, Korean Patent Registration No. 470320 discloses a steam cleaner having a vacuum cleaning function for performing a vacuum suction cleaning and a steam cleaning function at one time. The conventional steam / vacuum cleaner includes a vacuum suction cleaner for sucking and collecting garbage in front, and a steam cleaner for directly spraying steam on a mop that wipes the floor while rotating in the rear.

In order to attach / detach the mop to / from the rotating plate, the brush is turned upside down and the mop is pulled off with the bottom surface of the brush facing upward. There was a hassle to pay.

In order to check the water remaining in the water tank, it is necessary to check the water tank only through a narrow inlet with the cap attached to the inlet of the water tank being detached. It was not easy to know when to replenish the water because it was difficult to accurately grasp the amount of water in the tank.

Further, since the prior art is a water tank heating method for heating a water tank by a heater, the preheating time for preheating water to be steamed becomes long, so that it is inconvenient to wait at least 2-4 minutes without using the steam function immediately . In addition, there is a problem in that the remaining amount of water remains in the heater which always generates steam, so that the heater is corroded or the steam spray nozzle of the heater is clogged due to the water mist formed by such residual water.

In addition, when the heater is overheated, there is no safety device such as shutting off the power supply to the heater, and there is a fear that the product may be damaged or fire due to overheating of the heater.

In order to solve the above problems, the present invention provides a suction brush for a steam-type vacuum cleaner for improving the function of an overall steam-powered vacuum cleaner.

In order to achieve the above object, the brush body is connected to the vacuum cleaner body having a suction motor and a dust collecting unit, and guides the dust on the surface to be cleaned with air through the suction force generated by the suction motor to guide the dust collecting unit to the dust collecting unit; It is connected to a water reservoir installed in the brush body and a micro pump for pumping a small amount of water stored in the water reservoir, and instantaneous heating and steaming the water supplied from the micro pump to the surface to be cleaned through the injection nozzle Steam generation unit including a heater unit for injecting steam; A turbine fan installed in the brush body and generating a rotational force by intake air flowing into the brush body; A power transmission unit driven by the rotational force of the turbine fan; And at least one pair of mop rotating plates disposed below the suction brush and rotating by the power received through the power transmission unit, wherein the heater unit has gravity applied from the water supply point to the water injection point. It provides a suction brush of the combined vacuum cleaner, characterized in that it comprises the instantaneous heating section which is continuously inclined downward while flowing.

In this case, the heater unit may include an upper case having an inflow pipe for introducing water supplied from the micropump; And a lower case detachably coupled to the upper case at an upper side thereof and disposed below the instantaneous heating section and having a heating body for heating water, As the water flows from the supply point of the water to the injection point of the water and is continuously downwardly inclined while being flowed by the gravity, the minute amount of water supplied from the micropump is instantaneously heated, In this case, the instantaneous heating section is formed as a U-shaped guide groove in order to ensure the maximum heating area corresponding to the size of the heater portion, it is preferable that the heating body is formed in a U-shaped along the instantaneous heating section. In addition, the injection nozzle may be disposed at a position adjacent to the end of the heating section.

On the other hand, the heater unit may further include a temperature control device for cutting off the power supplied to the heater unit when the detected temperature is detected by the temperature of the heater unit more than the preset temperature, overheating the heater unit when the temperature control device failure It may further include a bimetal device for preventing, and may further include a temperature fuse for shutting off the power supplied to the heater unit in order to prevent overheating of the heater unit when the temperature control device and the overheat prevention device fail. Accordingly, it is possible to reliably prevent the heater section from being overheated through the multi-stage safety device.

Meanwhile, the water reservoir is partially made of a transparent material so that the inside of the water reservoir can be checked while the brush is mounted on the brush body, so that the remaining amount of water in the reservoir can be easily grasped.

Hereinafter, a suction brush of a steam-type vacuum cleaner according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a schematic plan view showing the inside of the suction brush shown in FIG. 1. FIG. 3 is a cross-sectional view of the suction brush shown in FIG. 2, and FIG. And a turbine fan and a power transmission unit provided inside the cover.

1 to 3, the suction brush according to the present invention includes a brush body 10, a turbine fan 20, a power transmission unit 30, first and second cover plates 41 and 42, A steam generating unit 60, a temperature control unit 71, an overheat preventing unit 73, and a thermal fuse 75. The steam generating unit 60,

The brush body 10 includes an upper body 11 and a lower body 13, and a connecting tube 10b communicating with the suction inlet 13a is pivotally coupled to the rear body 11. The connection tube 10b is coupled to a connection tube (not shown) connected to a cleaner body (not shown) in which a suction motor (not shown) and a dust collecting unit (not shown) are installed.

The upper body 11 is detachably coupled to the lower body 13 and protects various components installed in the lower body 13. [ The upper body 13 has a receiving groove 14 on one side for receiving the water reservoir 50. The receiving groove 14 has side walls 14a and 14b And a rear wall 14c to which the rear surface of the water reservoir 50 is closely attached.

The lower body 13 has a suction port 13a for sucking air along with the dust on the surface to be cleaned on the bottom surface thereof and the first and second cover plates 41 and 42 are positioned behind the suction port 13a. Further, the lower body 13 includes a turbine fan 20, a power transmitting unit 30 and a steam generating unit 60 inside. In this case, the lower body 13 is provided with a first cover 18a for isolating and accommodating the turbine fan 20 and the power transmission unit 30 from the steam generating unit 60, and the first cover 18a A second cover 18b for guiding the air introduced from the suction port 13a toward the first cover 18a is provided in front of the first cover 18a. The first and second covers 18a and 18b are arranged so as to guide the dust and the intake air flowing into the suction port 13a from the surface to be cleaned to the connection portion 10a by moving the suction flow path between the suction port 13a and the connection portion 10a The pressure loss can be minimized by limiting to the distance.

The turbine fan 20 is rotatably installed at a portion adjacent to the connecting portion 10a on the suction passage of the lower body 13 so as to be driven rotationally by the suction air flowing into the connecting portion 10a. In addition, the turbine fan 20 serves as a rotational power source of the first and second mop rotating plates 41 and 42.

The power transmission unit 30 includes first and second worm gears 31 and 32 and first and second worm wheels 33 and 34 so that the rotational force of the turbine fan 20 is transmitted to the first and second mop To the rotary plates 41 and 42, respectively. In this case, the first and second worm gears 31 and 32 are fixed to the centers of both side surfaces of the turbine fan 20, and are extended by a predetermined length along the axial direction of the turbine fan 20. The first and second worm wheels 33 and 34 are engaged with the first and second worm gears 31 and 32 respectively and the first and second rotary support shafts 35 and 36 extending downward are engaged with the lower Is slidably inserted into the first and second rotation support projections (19a, 19b) formed on the body. The first and second engagement holes 38 and 39 formed at the centers of the first and second worm wheels 33 and 34 are engaged with the first worm wheel 33 and the first rotation support shaft 35, Shaft wheel 34 and the second rotation support shaft 36 in the axial direction. In this case, the engaging holes 38, 39 are formed on the inner circumference with non-slip portions 38a, 39a in which threaded projections continuously protrude.

The first and second mover swash plates 41 and 42 have mops 71 and 72 attached to their bottom surfaces and are respectively provided with engagement holes 38 and 38 of the first and second worm wheels 33 and 34 The engaging projections 43 and 44 snap-engaged with the engaging projections 39 and 39 are protruded by a predetermined length.

The pair of coupling protrusions 43 and 44 are non-slip portions 43a in which threaded protrusions continuously protrude in the same manner as the non-slip portions 38a and 39a of the coupling holes 38 and 39 along the outer circumference, respectively. 44a) is formed. The non-slip portions 43a and 44a of the coupling protrusions 43 and 44 are non-slip portions of the coupling holes 38 and 39 when the coupling protrusions 43 and 44 are snapped to the coupling holes 38 and 39. As engaged with the 38a and 39a, the first and second mop rotating plates 41 and 42 receive the rotational force of the first and second worm wheels 33 and 34 accurately and receive the first and second worm wheels 33. , 34). The engaging projections 43 and 44 have snap engagement portions 43b and 44b formed at the upper end thereof with diameters slightly larger than the diameters of the engaging holes 38 and 39, respectively. In this case, it is preferable that the snap fitting portions 43b and 44b are made of an elastic body having an elastic force so that the engaging projections 43 and 44 can be easily inserted into and detached from the engaging holes 38 and 39.

Further, the first and second mover swash plates 41 and 42 partially protrude rearward of the brush body 10, taking into account that the user's cleaning position is usually located behind the brush body 10. [ For example, as shown in Fig. 4, in order to separate or replace the mops 71 and 72 from the first and second rotary plates, when the user rotates the back of the brush body 10 with respect to the front of the brush body 10 The first and second worm-wheel rotary plates 41 and 42, which protrude rearward of the brush body 10, are stepped on the first and second worm wheels (43 and 44) 33 and 34, respectively.

Meanwhile, non-slip portions 38a, 39a; 43a formed in the coupling holes 38 and 39 and the coupling protrusions 43 and 44, respectively, to receive the rotational force from the first and second worm wheels 33 and 34; Instead of omitting 44a, as shown in FIG. 5, the entire engaging protrusion 143 of the first mop rotating plate 41 is formed of an elastic body, and the diameter D2 of the engaging protrusion 143 is the first worm wheel 33. It is formed somewhat larger than the diameter of the coupling hole (138) of. Accordingly, the coupling protrusion 143 may be coupled to the coupling hole 138 in a compressed state, so that the coupling protrusion 143 accurately rotates the rotation force without slip in the coupling hole 138 when the first worm wheel 33 rotates. The first and second mop rotating plates 41 and 42 may be transferred. The engaging projection of the second worm rotation plate 42 and the engaging projection of the second worm wheel 34 (not shown) are formed in the same manner as the engaging projection 143 and the engaging hole 138 described above.

1 and 6, the water storage container 50 is provided with a transparent window 51 for visually grasping the remaining amount of the water stored in the receiving groove 14, A discharge port 53 for discharging the water stored in the reservoir 50 to the outside is protruded. The discharge port 53 is inserted into the docking protrusion 15a fixed to the lower body 13 and the connection protrusion 15b protruded inside the docking protrusion 15a is inserted into the discharge port 53 . Accordingly, the water reservoir 50 supplies the stored water to the micro pump 61 through the first pipe 62.

The water reservoir 50 is locked or unlocked when it is mounted in the receiving groove 14 by the locking unit 17 formed on the rear wall 14c of the receiving groove 14. [ This locking unit 17 includes a latch 17a, a coil spring 17b and a slide button 17c. In this case, the latch 17a has a coil spring 17b whose tip end passes through the rear wall 14c of the receiving groove 14 and whose rear end is supported at one side by a support wall 11a formed inside the upper body 11, As shown in Fig. The slide button 17c is disposed outside the upper body 11 so as to be easily operated by a user and is installed to be movable along the sliding groove 11b. The slide button 17c is connected to a part of the latch 17a, so that the latch 17a is inserted into or removed from the catching groove 54 formed at the rear of the water reservoir 50, so that the water reservoir 50 It can be locked or unlocked to the receiving groove (14).

1, 7A and 7B, the steam generating unit 60 includes a micro-pump 61 and a heater unit 63. The micro- The micro pump 61 is connected to the water reservoir 50 by the first pipe 62 as described above and supplies the water stored in the water reservoir 50 to the heater 63 by a minute amount.

The heater unit 63 heats the water supplied from the micropump 61 through the second piping 64 to generate steam, and then the generated steam is sprayed toward the surface to be cleaned. The heater portion 63 includes an upper case 64, a lower case 65, and a heating body 66.

The upper case 64 is detachably coupled to the lower case 65 and surrounds the heating body 66 disposed inside with the lower case 65. The upper case 64 is provided with an inflow pipe 64a through which the water conveyed from the micro pump 61 is introduced into the heater unit 63. The inflow pipe 64 64a extend to a position corresponding to the water supply point A (see Fig. 7B) of the U-shaped guide groove 65a of the lower case 65 to be described later. Accordingly, a small amount of water flowing into the heater unit 63 through the inflow pipe 64a is always supplied to the predetermined position, that is, the water supply point A.

The lower case 64 has a U-shaped guide groove 65a under the U-shaped guide groove 65a and a heating body 66 formed in a U shape corresponding to the U-shaped guide groove 65a. The guide groove 65a is formed to have a U-shape. The U-shaped guide groove 65a is continuously inclined downward at a predetermined angle from the water supply point A to the point C via the point B. Accordingly, the water supplied to the water supply point (A) through the inlet pipe (64a) flows along the U-shaped guide groove (65a) from the point A to the point C to the U-shaped guide groove (65a) in the heater 63 It is changed into steam while being heated instantaneously by the heating body 66 formed in a U shape so as to correspond to The lower case 64 is provided with an injection hole 65b for guiding steam to the outside at a portion adjacent to the point C of the U-shaped guide groove 65a, and the injection hole 65b is formed outside the lower case 65, The spray nozzle 65c is formed.

The temperature controller 71 may use a positive temperature coefficient thermistor (PTC) having a positive resistance temperature coefficient (positive temperature coefficient) whose resistance value increases when the temperature rises. 8A, the temperature control device 71 is electrically connected to a power line connected to the heater unit 63. When the temperature sensed by the heater unit 63 is higher than a preset temperature, the heater unit 63 63 in order to shut down the power supply.

8A, the overheat preventing device 73 is electrically connected to a power line connected to the heater unit 63 and is a device using a bimetal. In place of the temperature control device 71 in the event of a failure of the temperature control device 71, It is a safety device.

8A, the thermal fuse 75 is electrically connected to a power line connected to the heater unit 63. When both the temperature control unit 71 and the overheat prevention unit 73 are in failure, The power supply to the heater unit 63 is interrupted.

In addition, the present invention is provided with a microcomputer (not shown), and provided with a sensor (not shown) for detecting the presence or absence of water in the water reservoir (50) or the first pipe 62, the above-described temperature control device 71 ), When the overheat protection device 73 and the temperature fuse 75 does not all operate, by finally shutting off the power supply of the heater unit 63, it is possible to protect the heater unit 63 in multiple stages.

As described above, in the present invention, since the micropump can be instantaneously heated by supplying a small amount of water to the heater unit continuously, the preheating time can be shortened as compared to the conventional water tank heating formula.

In addition, since the residual water is not present in the heater unit at the end of the steam function, it is possible to prevent generation of scale generated by the residual water, and also to prevent the steam injection nozzle of the heater unit from being blocked by the wet.

In addition, the present invention can safely prevent the damage or fire of the product due to overheating of the heater unit through a plurality of safety devices installed in the heater unit.

In addition, since a part of the water reservoir is made of a transparent material, the remaining amount of the water reservoir can be easily grasped by the naked eye and the water replenishment time can be easily recognized.

 While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. That is, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims. Accordingly, all such appropriate modifications and changes, and equivalents thereof, should be regarded as within the scope of the present invention.

Claims (8)

A brush body connected to the cleaner main body having a suction motor and a dust collecting unit, for sucking dirt on the surface to be cleaned with air through a suction force generated by the suction motor and guiding the dust to the dust collecting unit; A micro pump connected to a water reservoir installed in the brush body for pumping a small amount of water stored in the water reservoir, and instantaneously heating and steaming water supplied from the micro pump, and steams the surface to be cleaned through a spray nozzle. Steam generating unit including a heater for spraying; A turbine fan installed in the brush body and generating a rotational force by intake air flowing into the brush body; A power transmission unit driven by the rotational force of the turbine fan; And And at least one pair of mop rotating plates disposed below the brush body and rotating with power received through the power transmission unit. The heater unit includes a suction brush for a combined steam cleaner, characterized in that the water flowing into the water from the supply point of the water injection point flows by gravity to form an instantaneous heating section continuously downwardly inclined. The method of claim 1, The heater unit has an upper case formed with an inlet pipe for introducing the water supplied from the micro pump; The upper case is detachably coupled to the upper case, the lower case is disposed on the lower side of the instantaneous heating section having a heating element for heating water; suction brush of the combined vacuum cleaner comprising a. 3. The method of claim 2, The instantaneous heating section is formed as a U-shaped guide groove to ensure a maximum heating area corresponding to the size of the heater section, Wherein the heating body is formed in a U shape along the instantaneous heating section. ≪ RTI ID = 0.0 > 11. < / RTI > The method of claim 3, The spray nozzle is a suction brush of the combined vacuum cleaner, characterized in that disposed in the position adjacent to the end of the heating section. The method of claim 1, Wherein the heater unit further comprises a temperature control unit for shutting off a power supplied to the heater unit when the temperature sensed by sensing the temperature of the heater unit is equal to or higher than a preset temperature. 6. The method of claim 5, Further comprising a bimetal device for preventing overheat of the heater unit when the temperature control device fails. ≪ RTI ID = 0.0 > 11. < / RTI > The method according to claim 6, Further comprising a thermal fuse for shutting off power supplied to the heater unit to prevent the heater unit from overheating when the temperature controller and the bimetallic unit fail. The method of claim 1, Wherein the water reservoir is partially made of a transparent material so that the inside of the water reservoir can be identified while the brush is mounted on the brush body.

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