CN117597056A - Dust collector - Google Patents

Abstract

The invention relates to a dust collector, comprising: a cleaning module for cleaning a cleaning area by generating steam; the cleaning module includes: a cleaning module cover body connected with the main body to form an appearance, and a space is formed inside; a heater arranged in the cleaning module cover body and generating steam by water; a water tub disposed at an upper portion of the heater to supply water to the heater; and a heater arrangement part formed by recessing upwards from the lower surface of the water bucket, at least a part of the heater being inserted and arranged in the heater arrangement part; therefore, the heat emitted from the heater is blocked by the water bucket, so that the user is not scalded even if the user contacts with the cleaning module, and the height of the cleaning module can be further reduced due to the special structure of the water bucket.

Description

Dust collector

Technical Field

The present invention relates to a vacuum cleaner, and more particularly, to a portable vacuum cleaner capable of loading and unloading a cleaning module.

Background

In general, a vacuum cleaner is an electric home appliance that sucks small garbage or dust by sucking air by using electricity and fills it in a dust tub located in a product, and is commonly called a vacuum cleaner.

Such a vacuum cleaner can be classified into a manual vacuum cleaner for cleaning while a user directly moves the vacuum cleaner, and an automatic vacuum cleaner for cleaning while traveling autonomously. The manual vacuum cleaner may be classified into a canister-type (canister-type) vacuum cleaner, an upright-type (upright) vacuum cleaner, a hand-held vacuum cleaner, a stick-type vacuum cleaner, etc., according to the type of the vacuum cleaner.

In the past, canister cleaners have been widely used as household cleaners, but in recent years, hand-held cleaners and stick cleaners, in which a dust tub and a cleaner main body are integrated to improve the convenience of use, have been increasingly used.

In the case of the canister type cleaner, the main body and the suction inlet are connected by a rubber hose or tube, and a brush may be inserted into the suction inlet according to circumstances to be used.

The hand-held cleaner (Hand Vacuum Cleaner) maximizes portability, but is lightweight, but because of its short length, requires squatting, and thus the cleaning area may be limited. Therefore, the cleaning agent is used for cleaning local places such as desks, sofas and automobiles.

The stick-type vacuum cleaner can be used in a standing state, and thus cleaning can be performed without bending. Thereby facilitating cleaning while moving a wide area. If the hand-held cleaner cleans a narrow space, the wand-type cleaner can clean a wider space than the hand-held cleaner and can clean a higher place where the hand cannot reach. In recent years, stick cleaners have been provided in a module form, and thus, the types of cleaners have been actively changed for various objects to use them.

The manner of cleaning the floor is largely classified into dry cleaning and wet cleaning. Dry cleaning is a cleaning method by sweeping or sucking dust, and a conventional vacuum cleaner belongs to this cleaning method. Wet cleaning is a method of cleaning by wiping dust with a wet wipe. In addition, wet cleaning is also a method of sterilizing and cleaning by generating and spraying high-temperature steam.

In recent years, with the use of various materials for buildings, cleaning systems have been diversified. Conventionally, the floor surface is mainly made of wood, and thus wet cleaning cannot be performed, and only dry cleaning can be performed. However, in recent years, the floor panel is made of various materials such as steel plate and marble, and wet cleaning is also possible.

Conventionally, a dry-type dedicated cleaner has been used for dry cleaning, and a wet-type dedicated cleaner has been used for wet cleaning. However, there is an inconvenience in that both cleaners must be purchased in order to clean various types of floors. In order to solve the above-described problems, a method of attaching a dry cleaning module to a main body during dry cleaning and a wet cleaning module to a main body during wet cleaning by having one main body, a dry cleaning module, and a wet cleaning module has been studied.

The wet cleaning module includes a water tub storing water, a heater generating steam by heating water, a cloth scrubbing the ground by receiving water or steam, etc. Preferably, the components are formed from an assembly for ease of replacement. For example, when the water tub or the heater is disposed in the main body, there is a problem in that cleaning is inconvenient due to unnecessary components when the dry cleaning module is mounted to the main body, and therefore, it is preferable that the water tub or the heater is disposed in the wet cleaning module, not in terms of cleaning easiness or ease of module replacement or space use.

Prior art 1 discloses a heating device and a vacuum cleaner having the same. The cleaner of prior art 1 includes a heating device of a heating housing that receives water from a water supply tank and generates steam.

According to prior art 1, the water tub is detachably provided to the main body, not the nozzle assembly. In addition, the heating means for generating steam is also provided to the main body instead of the nozzle assembly. In prior art 1, in order to design the nozzle assembly to be small while securing sufficient storage capacity of the water tub, the water tub and the heating device are provided to the main body instead of the nozzle assembly.

In the prior art 1, since the water tub is provided to the main body, the center of gravity is high, so that there is a problem in that the operation is difficult. In addition, there is a problem in that heat loss occurs during the flow of steam to the wiper due to a large distance between the heater and the wiper, and sensitive electronic devices are damaged by the lost heat.

Prior art 2 discloses a steam cleaner. In the prior art 2, the structure of the steam generating part is simple, the steam generating efficiency can be improved, and cleaning efficiency is improved by rotating the cleaning cloth for receiving steam on the left and right sides. However, as in the case of the prior art 1, the water tub and the heater of the prior art 2 are also provided in the cleaner main body instead of the cleaning module, and thus have the same problems as in the prior art 1.

Prior art 3 discloses a steam wet wipe vacuum cleaner. In prior art 3, dust is guided to the central suction port by the rotation of the brush at the periphery of the water tub, whereby the steam wet wipe is kept clean and the steam wet wipe cleaning can be performed. However, in the conventional art 3, since heat generated in the heater is diffused to the upper portion, there is a problem that sensitive electronic devices such as a motor are damaged. In addition, since the height of the water tub is lowered in order to reduce the height of the cleaning module, there is also a problem in that the storage capacity of the water tub is reduced.

Disclosure of Invention

Problems to be solved

The present invention has been made to solve the problems in the prior art, and an object of the present invention is to provide a vacuum cleaner having a water tank capable of securing a maximum amount of water stored in a cleaning module in a state where the height of the cleaning module is designed to be as low as possible, as described above, by providing a water tank for storing water and a heater for generating steam using water in a wet cleaning module.

Another problem to be solved by the present invention is to provide a vacuum cleaner that keeps the center of gravity of a cleaning module at the center by matching the water level of a portion where air holes are formed and the water level of a portion where no air holes are formed when water in the water tub is discharged.

A further problem to be solved by the present invention is to provide a vacuum cleaner which prevents a user from being burned or an electronic device such as a motor or a sensor disposed near the heater from being damaged by heating an upper surface of the cleaning module to a high temperature by radiating heat emitted from the heater to the outside of the cleaning module.

A further problem to be solved by the present invention is a cleaner in which water drops do not fall down toward a heater when dew is formed on an inner side surface of a water tub.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

Technical proposal for solving the problems

In order to achieve the above problems, a dust collector according to an embodiment of the present invention includes: a main body configured with an operation part for receiving the instruction and a main battery for supplying power; and a cleaning module connected to the main body and configured to clean a cleaning area by generating steam. The cleaning module includes: a cleaning module cover body connected with the main body to form an appearance, and a space is formed inside; a heater arranged in the cleaning module cover body and generating steam by water; a water tub disposed at an upper portion of the heater to supply water to the heater; and a heater arrangement part formed by recessing upward from the lower surface of the water bucket, wherein at least a part of the heater is inserted and arranged in the heater arrangement part.

The heater arrangement portion may include: a first inclined surface extending rearward from one side of the lower surface of the water tub, the rear end being disposed at an upper position than the front end; a second inclined surface extending rearward from a rear end of the first inclined surface, the rear end being disposed at an upper position than the front end; and a third inclined surface extending rearward from a rear end of the second inclined surface. At this time, the inclination of the second inclined surface may be smaller than the inclination of the first inclined surface, and the inclination of the third inclined surface may be smaller than the inclination of the second inclined surface.

The water tub may include: a front storage part configured at the front end to form an internal space for storing water, and extending to left and right sides; a left storage part forming an internal space for storing water, extending from the left end of the front storage part to the rear along the left side surface of the water bucket; and a right side storage part forming an internal space for storing water, extending from the right side end of the front storage part to the rear along the right side surface of the water bucket.

The water tub may include: a water outlet formed at the front end for discharging water; and an air hole formed at the rear end, through which external air is flowed in by negative pressure. In this case, the air hole may be disposed on the opposite side of the drain opening with respect to an imaginary line dividing the water tub from left to right when viewed from above.

The water tub may include water supply ports formed at both side surfaces of the water tub and capable of supplying water.

The cleaning module cover may include: a lower cover body, the upper surface of which is provided with a heater; and an upper cover combined with the lower cover, configured to be separated from the heater at the upper part of the heater, and provided with a water bucket at the upper surface. In this case, a heat-insulating coating surface may be formed on the inner surface of the upper cover body facing the heater.

In order to achieve the above problems, a dust collector according to an embodiment of the present invention includes: a main body configured with an operation part for receiving the instruction and a main battery for supplying power; and a cleaning module connected to the main body and configured to clean a cleaning area by generating steam.

The cleaning module includes: a cleaning module cover body connected with the main body to form an appearance, and a space is formed inside; a heater arranged in the cleaning module cover body and generating steam by water; and a water tub disposed at an upper portion of the heater to supply water to the heater. At this time, the water tub includes a storage part surrounding at least two sides of four-directional sides of the heater, and stores water.

The heater may be configured to be inclined with respect to the ground, and the water tub may include an inclined surface configured in parallel with an upper surface of the heater.

The storage section may include: a front storage part configured at the front of the water bucket and extending to the left and right; a left storage part extending from the left end of the front storage part to the rear along the left side surface of the water bucket; and a right side storage part extending from the right side end of the front storage part towards the rear along the right side surface of the water bucket.

Details concerning other embodiments are included in the detailed description and the accompanying drawings.

Technical effects

The dust collector according to the present invention has one or more of the following effects.

The first water tub is disposed at an upper portion of the heater and includes a heater disposition portion into which at least a portion of the heater is inserted, so that it is possible to design a cleaning module having a height as low as possible, thereby having an advantage of being able to clean a narrow gap.

The second tub includes a front storage part, a left storage part, and a right storage part, which surround the three-directional sides of the heater, whereby heat emitted sideways is absorbed to the storage parts, thereby also having an advantage of not overheating peripheral electronic devices.

The third water bucket has air channel connecting the left side storing part and the right side storing part, so that even if the air hole is formed on one side, the water level of the storing part without air hole is identical to that of the storing part with air hole, and the cleaning module has the center of gravity always in the center.

Fourth, heat emitted from the heater has a rising characteristic, and since the water tub is disposed at an upper portion of the heater, there is an advantage in that the stored water tub is not overheated, and thus is not scalded even if a user contacts the cleaning module.

Fifth, since the heater arrangement portion is formed at the inclined surface facing downward in front, dew condensed at the heater arrangement portion does not fall down toward the heater but flows down along the inclined surface toward the front end of the tub or the upper cover, and thus there is an advantage in that the performance of the heater is maximized.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

Drawings

Fig. 1 is a perspective view of a cleaning module of the present invention.

Fig. 2 is a front view of the cleaning module of the present invention.

Fig. 3 is a top view of the cleaning module of the present invention.

Fig. 4 is a right side view of the cleaning module of the present invention.

Fig. 5 is a bottom view of the cleaning module of the present invention.

Fig. 6 is an exploded view of the cleaning module of the present invention.

Fig. 7 is a view showing an internal configuration with the water tub and the upper cover removed from fig. 3.

Fig. 8 is a cross-sectional view of the portion a in fig. 3.

Fig. 9 is a sectional view of the portion B in fig. 3.

Fig. 10 is a perspective view of the tub of the present invention.

Fig. 11 is a view of the water tub of the present invention as viewed from the lower part.

Fig. 12 is a top view of the water tub of the present invention.

Fig. 13 is a bottom view of the water tub of the present invention.

Fig. 14 is a right side view of the water tub of the present invention.

Fig. 15 is an exploded view of the water tub of the present invention.

Fig. 16 is a sectional view of a portion C in fig. 12.

Fig. 17 is a sectional view of a portion D in fig. 12.

Fig. 18 is a diagram schematically showing the water level inside the water tub which varies according to the presence or absence of the air passage.

Fig. 19 is a perspective view of the upper housing.

Detailed Description

The advantages, features and methods of accomplishing the invention may be understood more readily by reference to the accompanying drawings and the examples detailed herein. However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various forms different from each other, which are provided only for sufficiently disclosing the present invention and for fully informing a person having ordinary skill in the art to which the present invention pertains that the scope of the present invention is determined only by the scope of the claims. Throughout the specification, like reference numerals refer to like constituent elements.

The present invention will be described below with reference to the drawings for describing a vacuum cleaner according to an embodiment of the present invention.

The cleaner is a cleaning device manually operated by a user. For example, the cleaner may refer to a hand-held cleaner or a stick cleaner.

The cleaner may include a main body (not shown). The main body is a component for providing suction force to the cleaning module 100 by providing a suction motor (not shown) inside.

The body may be connected with the extension tube 200. The main body may be connected to the cleaning module 100 using an extension tube 200. The main body may generate suction force by the suction motor and provide the suction force to the cleaning module 100 through the extension pipe 200. External dust may flow into the main body through the cleaning module 100 and the extension pipe 200.

The main body forms an external appearance and accommodates main constituent elements therein. The main body may be provided with a dust tub, a dust separating part, a suction motor, a filter, a handle, an operating part, and a main battery.

A dust bucket (not shown) is a constituent element for storing dust. The dust tub may communicate with the dust separating part and store dust separated at the dust separating part.

The dust separating part (not shown) communicates with the extension pipe 200. The dust separating part may separate dust sucked into the inside through the extension pipe 200 from air.

The dust separating part may communicate with the dust tub. In more detail, the dust separating part may be disposed inside the dust tub. Thereby, the dust separated at the dust separating part is collected to the dust tub, and the air is discharged to the outside of the dust separating part.

The dust separating part may be a cyclone separator capable of separating dust by cyclone flow.

The suction motor (not shown) is a component for generating suction force of the suction air. The suction motor is accommodated in the main body. The suction motor generates suction force by rotating.

The filter (not shown) is a component for filtering foreign matters contained in the flowing air. The filter may comprise a prefilter or a HEPA filter.

The prefilter is a filter disposed at the most upstream of the filters, which is formed in a mesh shape and physically filters larger dust for the first time. Prefilters are components that physically filter dust larger than the mesh, increasing the life of other filters.

The HEPA filter is a short term for High Efficiency Particulate Air (high efficiency particulate air, HEPA) filter, and filters dust. Typically, HEPA filters utilize electrostatic forces to filter the mote. The HEPA filter is disposed downstream of the prefilter.

A body handle (not shown) may be held by a user. The body handle may be formed to resemble a cylinder shape. Alternatively, the body handle 116 may be formed in a curved cylindrical shape.

The operation unit (not shown) is a component for receiving a command from a user. The operation unit may be constituted by a plurality of keys, and when the user presses the keys, the instruction corresponding thereto is executed. For example, the operation section may have a start key and a stop key.

A main battery (not shown) may be disposed in the main body. The main battery is a component that stores electric energy and supplies electric power to each component of the vacuum cleaner including the suction motor.

The main battery may be detachably coupled to the cleaner.

The main battery may provide power to the cleaning module 100. In contrast, the cleaning module 100 may receive electric power from the sub-battery.

The extension pipe 200 is a component for guiding air sucked from the cleaning module 100 to a main body (not shown).

One end of the extension pipe 200 communicates with the cleaning module 100, and the other end communicates with the main body. Specifically, the rear end of the extension pipe 200 is connected to the main body, and the front end of the extension pipe 200 is connected to the cleaning module cover 110.

The extension pipe 200 is formed in an elongated cylindrical shape.

A rotation axis (Rolling Shaft) x is formed along the length direction of the extension pipe 200. The rotation axis x is an imaginary line extending in the front-rear direction, and the cleaning module 100 can rotate (Rolling) about the rotation axis x.

The cleaner includes a cleaning module 100. The cleaning module 100 is a component for cleaning a cleaning area by sucking in outside air or generating steam.

The cleaning module 100 is connected to the main body. The cleaning module 100 may be directly connected to the main body, or may be indirectly connected to the main body through the extension pipe 200.

Referring to fig. 1 and 2, the cleaning module 100 includes at least one or more wipes 161. The wiper 161 is a component that contains moisture and cleans by wiping the floor surface.

Referring to fig. 2, the cleaning cloth 161 may be disposed in a pair on the left and right sides of the cleaning module 160.

The wiper 161 has a rotation axis arranged perpendicular to the floor surface, and wipes and cleans by rotating about the rotation axis.

At this time, two or more of the wipes 161 can be rotated in different directions, thereby facilitating the operation of the user. Taking fig. 2 as an example, the right hand wipe 161 may be rotated clockwise CW and the left hand wipe 161 may be rotated counterclockwise CCW. Thus, the pair of cleaning cloths 161 can push the cleaning module 100 forward by friction force, and the user can more gently advance the cleaner 100.

Fig. 1 is a perspective view of a cleaning module 100 of the present invention. Fig. 2 is a front view of the cleaning module 100 of fig. 1 from the front. Fig. 3 is a top view of the cleaning module 100 of fig. 1, as viewed from above. Fig. 4 is a right side view of the cleaning module 100 of fig. 1 from the right side. Fig. 5 is a bottom view of the cleaning module 100 of fig. 1, as viewed from below.

The cleaning module 100 is connected to the main body. Referring to fig. 1, the cleaning module 100 is connected to the extension pipe 200, and may be indirectly connected to the main body through the extension pipe 200.

The sub-battery 300 is disposed at the extension pipe 200. Specifically, the sub-battery 300 may be disposed at the front end of the extension pipe 200. The sub-battery 300 is electrically connected to the cleaning module 100, and supplies power to each component arranged in the cleaning module 100.

The sub-battery 300 may be electrically connected with the main battery. Thereby, the sub-battery 300 can receive electric power from the main battery.

The sub-battery 300 may be connected in series with the main battery. Therefore, when the electric energy stored in the sub-battery 300 is insufficient, the electric power of a sufficient voltage can be supplied to the cleaning module 100 by connecting the sub-battery 300 and the main battery in series.

The sub-battery 300 may be connected in parallel with the main battery. Thereby, the time for supplying power to the cleaning module 100 can be increased.

The sub-battery 300 may be disposed at the front end of the extension pipe 200. Alternatively, the sub-battery 300 may be disposed at the lower end of the extension pipe 200. With this arrangement, the center of gravity of the cleaner assembly in which the cleaning module 100 and the sub-battery 300 are combined is arranged at the lower portion, so that the direction control of the cleaner can be easily performed.

The sub-battery 300 may be disposed at the upper portion of the extension pipe 200. Specifically, the sub-battery 300 may be disposed at an upper position than a virtual line extending from the center of the extension pipe 200 in the longitudinal direction of the extension pipe 200.

The cleaning module cover 110 forms the exterior of the cleaning module 100 and forms a space for accommodating other components therein.

The cleaning module cover 110 is connected to the main body. Referring to fig. 1, the cleaning module housing 110 is connected to the front end of the extension pipe 200, and the rear end of the extension pipe 200 is connected to the main body, whereby the cleaning module housing 110 is indirectly connected to the main body through the extension pipe 200. In contrast, although not shown, the cleaning module cover 110 may be directly connected to the main body.

The foregoing "connected" may have a variety of interpretations. For example, air flow paths are connected to each other in the main body of the cleaning module cover 110, whereby air containing dust can flow through the cleaning module cover 110 to the main body. Further, the cleaning module cover 110 is electrically connected to the main body, whereby current can flow from the main battery disposed in the main body to the cleaning module cover 110.

A water tub 120 is installed at an upper surface of the cleaning module case 110.

An air inlet 111 is formed in the front surface of the cleaning module case 110, so that external air can flow into the cleaning module case 110.

The light emitting module 150 is disposed at the front lower portion of the cleaning module cover 110, so that light can be irradiated onto the front floor surface of the cleaning module 100.

An air outlet 1121 is formed in a side surface of the cleaning module case 110, so that air in the cleaning module case 110 can be discharged to the outside.

A wiper is disposed on the bottom surface of the cleaning module cover 110. The wipe may be wet cleaned by wiping the floor.

A suction port 181 is arranged on the bottom surface of the cleaning module cover 110. The suction port 181 can perform dry cleaning by sucking dust existing on the floor surface.

A shielding member 170 is disposed on the bottom surface of the cleaning module case 110. The shielding member 170 shields the front space in which the suction port 181 is provided and the rear space in which the wiper 161 is provided, thereby blocking diffusion of the vapor emitted from the wiper 161 to the suction port 181.

The cleaning module housing 110 may be divided into a lower housing 111 and an upper housing 112.

The lower housing 111 forms part of the bottom and side surfaces of the cleaning module 100.

A heater 130 is provided on the upper surface of the lower cover 111.

An air inlet 111 is formed in the front surface of the lower cover 111.

The lower cover 111 is provided with a light emitting module 150, and a hole for passing light is formed in the front surface. A hole through which the light passes is formed at a lower portion of the air inflow port 111.

A wiper is disposed on the bottom surface of the lower cover 111. A groove recessed upward is formed on the bottom surface side of the lower cover 111 to dispose the wiper.

A suction port 181 is provided on the bottom surface of the lower cover 111. The suction port 181 is disposed in front of the wiper 161.

A plurality of components for driving the cleaning module 100 are provided on the upper surface of the lower cover 111.

A lower partition wall 1112 is formed on the upper surface of the lower cover 111. The lower partition wall 1112 is disposed at the periphery of the heater 130, and blocks heat emitted from the heater 130 from being emitted to the outside.

The lower partition wall 1112 is formed to protrude upward from the upper surface of the lower cover 111. The upper end of the lower partition wall 1112 faces the lower end of the upper partition wall 1122, thereby isolating the internal space in which the heater 130 is disposed from the external space in which other components are disposed.

A shielding member insertion groove 1113 is formed on the lower surface of the lower cover 111. The shielding member 170 is inserted into the shielding member insertion groove 1113.

The upper housing 112 forms part of the upper and side surfaces of the cleaning module 100.

The upper cover 112 is coupled to the lower cover 111, and is disposed at an upper portion of the heater 130 to be spaced apart from the heater 130, and a water tub 120 is provided at an upper surface thereof.

An air outlet 1121 is formed in a side surface of the upper cover 112.

The upper housing 112 is disposed apart from the heater 130. The heat emitted from the heater 130 reaches the upper housing 112 by convection.

An upper partition 1122 is formed in the upper cover 112. The upper partition 1122 is disposed on the inner side surface of the upper cover 112 and extends downward toward the heater 130. Since the upper partition wall 1122 surrounds at least a part of the side surface of the heater 130, the heat emitted from the heater 130 is blocked from convection sideways.

A release button 1123 is disposed in the upper cover 112. The release button 1123 fixes the water tub 120 by being caught to a coupling hook 125 formed at the water tub 120. When the release button 1123 is operated, the release button 1123 is lowered, and the engagement of the engagement hook 125 is released, whereby the water tub 120 is detached.

The release button 1123 may be disposed at the extension tube disposition portion 127 of the water tub 120.

An insulating coating surface 1124 is formed on the inner surface of the upper cover 112 facing the heater 130. The thermally insulating coating 1124 blocks heat emitted from the heater 130 from transferring to the upper housing 112.

The heat insulating coating surface 1124 is disposed in a region of the inner side surface of the upper cover 112 that is divided by the upper partition wall 1122. Thereby, the heat-insulating coated surface 1124 blocks heat emitted upward from the heater 130 from being transmitted to the upper cover 112.

The upper cover 112 includes a tub seating portion 1125. The water tub seating portion 1125 is a groove recessed from an upper portion of the upper cover 112 to face downward. The water tub 120 is disposed at the tub disposition part 1125 and is disposed at the upper cover 112.

The water tub seating part 1125 may be divided into storage part insertion grooves 1125a to 1125c, an air passage insertion part 1125d, and a guide protrusion 1125e.

The storage part insertion grooves 1125a to 1125c are grooves into which the storage part 123 in the water supply tub 120 is inserted and seated. The storage portion insertion grooves 1125a to 1125c may be formed in a U-shape with an open back surface when viewed from above.

A front storage part insertion groove 1125a is formed at the front end of the water tub seating part 1125 and extends to the left and right sides. The front storage portion 123a is inserted into and seated in the front storage portion insertion groove 1125a.

The left storage portion insertion groove 1125b extends rearward from the left end of the front storage portion insertion groove 1125a. The left storage portion 123b is inserted into and seated in the left storage portion insertion groove 1125b.

The right storage portion insertion groove 1125c extends rearward from the right end of the front storage portion insertion groove 1125a. The right storage part 123c is inserted into and seated in the right storage part insertion groove 1125c.

A through hole is formed at a position overlapping the drain port 122 of the water tub 120 in the connection portion of the front storage portion insertion groove 1125a and the right storage portion insertion groove 1125 c.

The air passage insertion groove 1125d is a groove into which the air passage 128 formed in the water tub 120 is inserted. In the case where the water tub 120 is mounted, the air passage insertion groove 1125d is configured to overlap up and down with the air passage 128 formed at the water tub 120. The air passage insertion groove 1125d extends toward the left and right storage portion insertion grooves 1125b, 1125 c.

The guide projection 1125e is a constituent element for guiding the water tub 120 to a correct position when the water tub 120 is inserted into the water tub mounting portion 1125. A groove for insertion of the guide protrusion 1125e is formed in the water tub 120 at a position corresponding to the guide protrusion 1125 e.

Referring to fig. 19, a guide protrusion 1125e is formed at the rear end of the right storage part insertion slot 1125 c. Alternatively, although not shown, the guide protrusion 1125e may be formed at the rear end of the left storage portion insertion groove 1125 b.

Preferably, the guide protrusion 1125e is formed in either one of the right side storage part insertion groove 1125c or the left side storage part insertion groove 1125 b. This is to ensure that the storage capacity of the storage unit 123 is equal to or greater than a predetermined value.

A heater arrangement portion 1126 is arranged in the upper cover 112. The heater arrangement portion 1126 of the upper cover 112 is formed to correspond to the heater arrangement portion 126 of the tub 120. That is, the first inclined surface 1126a of the heater arrangement portion 1126 of the upper cover 112 corresponds to the first inclined surface 126a of the heater arrangement portion 126 of the water tub 120, the second inclined surface 1126b of the heater arrangement portion 1126 of the upper cover 112 corresponds to the second inclined surface 126b of the heater arrangement portion 126 of the water tub 120, and the third inclined surface 1126c of the heater arrangement portion 1126 of the upper cover 112 corresponds to the third inclined surface 126c of the heater arrangement portion 126 of the water tub 120. Thus, the water droplets formed in the heater arrangement portion 1126 of the upper cover 112 do not fall down the heater 130, and flow down the first to third inclined surfaces 1126a to 1126 c.

The heater 130 is a constituent element for generating steam from water.

The heater 130 is disposed inside the cleaning module cover 110. Specifically, the heater 130 is provided on the upper surface of the lower cover 111.

The water inlet 131 is a hole formed at an inlet end of the heater 130. The water flows into the heater 130 through the water inlet 131. The water inlet 131 is connected to a heater hose 143.

The steam discharge port 132 is a hole formed at an outlet end of the heater 130. Steam is discharged from the heater 130 through the steam discharge port 132. The vapor vent 132 is connected to the wipe.

The water inlet 131 is disposed above the steam outlet 132. Thereby, the water flows from the upper portion to the lower portion by gravity and is heated, and is changed into steam.

The heater 130 is disposed obliquely. Specifically, the heater 130 is disposed to be inclined at a predetermined angle with respect to the ground.

The rear end of the heater 130 is disposed above the front end of the heater 130. That is, the heater 130 has a tilt toward the rear-direction. Thereby, the water is heated while flowing from the rear upper portion to the front lower portion of the heater 130, and is changed into steam.

The water tub 120 is a constituent element for supplying water to the heater 130. The water tub 120 stores water, and the stored water flows into the heater 130 to be phase-changed into steam.

The water tub 120 is disposed at the cover. Specifically, the water tub 120 is mounted to a water tub seating portion 1125 formed at the upper cover 112.

The water tub 120 is disposed at an upper portion of the heater 130. Specifically, the water tub 120 is disposed to be spaced apart from the heater 130 at an upper portion of the heater 130.

The water tub 120 may be disposed at an upper portion of the heater 130 through the upper cover 112.

The water tub 120 includes a water supply port 121. The water supply port 121 is a hole through which water flows into the inside of the water tub 120. The water supply port 121 is formed at a side of the tub 120. The water supply port 121 may be formed at both side surfaces of the tub 120.

The water tub 120 includes a drain opening 122. The drain port 122 is a hole for draining water stored in the water tub 120. The water discharged from the drain port 122 flows toward the heater 130. A drain port 122 is formed at a lower face of the tub 120. The drain port 122 may be disposed at a connection portion between the front storage portion 123b and the right storage portion 123c.

The water tub 120 includes a storage 123. The storage 123 serves as an internal space of the water tub 120 and is a space capable of storing water. The storage part 123 may be formed in a U-shape opened at the rear when the tub 120 is viewed from the upper side. The storage section 123 may be divided into a front storage section 123a, a left storage section 123b, and a right storage section 123c.

The water tub 120 includes air holes 124. The air holes 124 are holes that enable air to flow into the inside of the water tub 120. When the water stored in the water tub 120 is discharged to the outside, the pressure inside the water tub 120 is lowered, and in order to compensate for the lowered pressure, air flows into the inside of the water tub 120 through the air holes 124.

An air hole 124 is formed at an upper end of the water tub 120. Specifically, the air hole 124 is formed at the rear end of the left storage portion 123 b. In contrast, the air hole 124 may be formed at the rear end of the right storage portion 123c.

The coupling hook 125 is a constituent element for fixing the water tub 120 to the upper cover 112. The engaging hook 125 is fixed by being caught by the release button 1123.

The coupling hooks 125 are formed at the rear end of the tub 120. Specifically, the coupling hooks 125 are formed in the extension pipe arrangement portion 127.

The heater arrangement portion 126 is a constituent element that forms a space into which at least a part of the heater 130 is inserted and arranged. The heater arrangement portion 126 is a surface of the lower surface of the tub 120 arranged to overlap the heater 130 up and down.

Referring to fig. 11, the heater arrangement portion 126 is formed to be recessed upward from the lower surface of the water tub 120. The height of the cleaning module 100 can be further reduced by inserting at least a portion of the heater 130 into the recessed groove of the heater arrangement portion 126.

The heater arrangement portion 126 may be formed in a shape similar to a quadrangle. Specifically, the heater arrangement portion 126 may be formed in a quadrangular shape, and each corner is formed in a curved surface that is curved instead of being bent.

The storage part 123 may be formed in a U-shape, and the heater arrangement part 126 may be surrounded by the storage part 123. With this arrangement, the heat released upward from the heater 130 can be blocked by the heater arrangement portion 126, and the heat released laterally from the heater 130 can be blocked by the storage portion 123.

When viewed from above, the area projected from the heater arrangement portion 126 to the floor surface is larger than the area projected from the heater 130 to the floor surface. With this arrangement, the water droplets condensed in the heater arrangement portion 126 do not fall toward the heater 130, but fall toward the outside of the heater 130. This can prevent water droplets from falling onto the heater 130, which may reduce the performance of the heater 130.

Referring to fig. 9, the heater arrangement portion 126 may be divided into a plurality of inclined surfaces. Specifically, the heater arrangement portion 126 includes a first inclined surface 126a, a second inclined surface 126b, and a third inclined surface 126c.

The first inclined surface 126a extends rearward from one side of the lower surface of the water tub 120, and the rear end is disposed at an upper position than the front end. That is, the first inclined surface 126a has an inclination toward the rear-direction.

Referring to fig. 11, the lower surface of the water tub 120 may have a plane in which the drain port 122 is disposed, and in this case, the first inclined surface 126a extends rearward from a rear end of the plane.

The second inclined surface 126b extends rearward from the rear end of the first inclined surface 126a, and the rear end is disposed at an upper position than the front end. That is, the second inclined surface 126b has an inclination in the backward-upward direction.

The third inclined surface 126c extends rearward from the rear end of the second inclined surface 126b. Referring to fig. 9, although the third inclined surface 126c may be formed in a plane parallel to the ground, the third inclined surface 126c may have an inclination in the backward-direction unlike that shown in fig. 9.

The inclination is defined in terms of the angle of the inclined surface relative to the ground. The inclination of the second inclined surface 126b is smaller than the inclination of the first inclined surface 126 a. The inclination of the third inclined surface 126c is smaller than the inclination of the second inclined surface 126b.

With this configuration, the water droplets condensed on the third inclined surface 126c flow down along the second inclined surface 126b and the first inclined surface 126a without falling down to the heater 130, thereby having an effect of not degrading the performance of the heater 130.

The heater 130 is configured to be inclined with respect to the ground, and the water tub 120 includes an inclined surface configured in parallel with an upper surface of the heater 130. Specifically, referring to fig. 9, the second inclined surface 126b may be disposed in parallel with the heater 130. With this arrangement, the heat emitted from the upper surface of the heater 130 in the vertical direction to the upper surface uniformly reaches the second inclined surface 126b, and the second inclined surface 126b can be uniformly heated. Therefore, there is an effect of preventing damage caused by overheating of one side of the tub 120.

The water tub 120 includes a storage part 123, and a space to store water is formed inside the storage part 123. The storage section 123 may be divided into a front storage section 123a, a left storage section 123b, and a right storage section 123c.

The front storage 123a is disposed at the front end of the tub 120 and extends to the left and right.

The front storage 123a blocks the emission of heat emitted forward from the heater 130 to the front of the cleaning module 100.

The left storage portion 123b extends rearward along the left side surface of the water tub 120 from the left end of the front storage portion 123 a.

The left storage 123b blocks the heat emitted from the heater 130 to the left from being emitted to the left of the cleaning module 100.

The right side storage portion 123c extends rearward along the right side surface of the water tub 120 from the right side end of the front storage portion 123 a.

The right storage 123c blocks the emission of heat emitted from the heater 130 to the right side from the cleaning module 100.

The front storage portion 123a, the left storage portion 123b, and the right storage portion 123c are formed in a U-shape that opens rearward when viewed from above. Since the cleaning module 100 cleans while moving forward, the necessity for cooling the rear of the heater 130 is reduced. Thus, it is preferable to form the U-shape so as to cover the front, left and right sides.

The cross-sectional area of the front storage portion 123a when viewed from the right side may be smaller than the cross-sectional area of the left storage portion 123b when viewed from the front or the cross-sectional area of the right storage portion 123c when viewed from the front. This is to make the front-rear length of the cleaning module 100 small. However, with this configuration, imbalance in water level between the left and right storage portions 123b and 123c may occur, and in order to solve the above-described problem, the air passage 128 may be formed.

At least one of the left storage portion 123b and the right storage portion 123c is disposed at a lower position than the rear end in a side view. Referring to fig. 14, the front end of the right storage 123c of the water tub 120 is disposed below the rear end, but the front end of the left storage 123b of the water tub 120 is also disposed below the rear end, although not shown. By having such a shape, an airbag (Air Pocket) is formed at the rear ends of the left side storage portion 123b and the right side storage portion 123 c.

The storage part 123 surrounds at least two sides of the four-directional sides of the heater 130. Specifically, the front storage portion 123a is disposed in front of the heater 130, the left storage portion 123b is disposed on the left side of the heater 130, and the right storage portion 123c is disposed on the right side of the heater 130, whereby the storage portion 123 surrounds three side surfaces of the heater 130. With this arrangement, the storage portion 123 blocks heat emitted laterally from the heater 130 from being emitted to the outside of the cleaning module 100.

The drain port 122 is formed in at least one of a connection portion of the front storage portion 123a and the left storage portion 123b or a connection portion of the front storage portion 123a and the right storage portion 123 c. Referring to fig. 10, the drain port 122 is formed at a connection portion of the front storage portion 123a and the right storage portion 123 c. Unlike the embodiment shown in fig. 10, the drain port 122 may be formed at a connection portion between the front storage portion 123a and the left storage portion 123 b.

The drain port 122 is connected to a tank hose 142. The inlet end of the water tank hose 142 is connected to the drain port 122, and the outlet end of the water tank hose 142 is connected to the water supply pump 141. The water stored in the water tub 120 flows toward the water tank hose 142 by gravity and is pressurized to the heater 130 through the heater hose 143 by the water supply pump 141.

When the water is discharged, the air hole 124 forms a passage through which the outside air flows due to the negative pressure. That is, when the water stored inside the water tub 120 is discharged to the outside, the pressure inside the water tub 120 is lowered, and in order to compensate for the lowered pressure, air flows into the inside of the water tub 120 through the air holes 124 while forming an air pocket.

The air hole 124 is formed in either the left storage portion 123b or the right storage portion 123 c. The air hole 124 forms an air bag in either the left storage portion 123b or the right storage portion 123 c. The left storage portion 123b or the right storage portion 123c has no storage portion 123 with an air hole 124, and an air bag is formed by an air passage 128. For example, referring to fig. 18, since the air hole 124 is formed in the left storage portion 123b, an air pocket is formed in the left storage portion 123b for the first time, and a part of the air forming the air pocket flows into the right storage portion 123c through the air passage 128, and an air pocket is formed in the right storage portion 123c for the second time, so that the water levels of the left storage portion 123b and the right storage portion 123c are equalized.

When the air passage 128 is not formed in the water tub, the air hole 124 needs to be formed in both the left and right storage parts 123b and 123 c.

A drain port 122 is formed at a front end of the water tub 120, and an air vent 124 is formed at a rear end of the water tub 120. That is, the water stored in the water tub 120 is discharged from the front end of the water tub 120 while flowing forward, and the air is diffused forward while flowing in from the rear end of the water tub 120.

A portion of the upper surface of the drain opening 122 is parallel to the ground, and an air hole 124 and an air passage 128 are formed along the upper surface. Referring to fig. 9, the upper end of the air passage 128 may be disposed at an upper portion than the upper end of the air hole 124. With this configuration, when the air bag is formed in the left side storage portion 123b, air can move directly to the right side storage portion 123c through the air passage 128, and the air bag can also be formed promptly in the right side storage portion 123 c.

The air hole 124 is disposed on the opposite side of the drain opening 122 with respect to an imaginary line dividing the water tub 120 from left to right when viewed from above. Referring to fig. 12, an imaginary line dividing the water tub 120 from left to right is a C-C cross-sectional line, and coincides with the rotation axis x of the cleaning module 100. Referring to fig. 12 and 13, the drain port 122 is disposed on the right side of the rotation shaft, and the air hole 124 is disposed on the left side of the rotation shaft when viewed from the top. By having this arrangement, there is an effect that the air hole 124 and the drain port 122 are arranged farthest from the storage portion 123, and all of the water stored inside the water tub 120 can be drained.

Unlike the embodiment shown in fig. 12 and 13, the air hole 124 may be disposed on the same side as the drain port 122 with respect to a virtual line dividing the water tub 120 from left to right when viewed from above.

The water supply port 121 is a hole through which water supplied to the water tub 120 passes.

The water supply ports 121 are formed at both side surfaces of the tub 120.

The water may be supplied from the right water supply port 121 after the left water supply port 121 is closed and the right water supply port 121 is opened.

Alternatively, water may be supplied from the left water supply port 121 after the right water supply port 121 is closed and the left water supply port 121 is opened.

Alternatively, after the front end of the water tub 120 is located at the upper portion and the rear end of the water tub 120 is located at the lower portion, both side water supply ports 121 may be opened, and then water may be supplied to one side water supply port 121. At this time, since the air is discharged from the other water supply port 121 while the water is supplied to the one water supply port 121, the water can be rapidly supplied.

A cover is provided at the water supply port 121, and water can be supplied to the water supply port 121 after the cover is removed. The cover may be made of a stretchable material such as rubber.

Referring to fig. 12, the extension pipe arrangement portion 127 forms a space for insertion of at least a portion of the extension pipe. By forming the extension tube arrangement portion 127 in the water tub 120, the length from the front end to the rear end of the cleaning module 100 can be shortened.

The extension tube arrangement portion 127 may be formed to be recessed forward from one side of the rear surface of the water tub 120.

The extension pipe arrangement portion 127 is arranged on the right side of the left side storage portion 123b, the left side of the right side storage portion 123c, and the rear of the heater arrangement portion 126.

The air passage 128 is a constituent element for adjusting the water level of the left and right storage portions 123b and 123c. The air passage 128 is disposed rearward of the front storage portion 123a, and connects the left storage portion 123b and the right storage portion 123c.

For example, when the air hole 124 is formed in the left storage portion 123b, an air bag is formed in the left storage portion 123 b. At this time, according to the conventional art, referring to fig. 18 a, the water level of the left storage portion 123b is lowered to H1 'as air flows into the left storage portion 123b, but since an air pocket cannot be formed in the right storage portion 123c, the center of gravity of the cleaning module is kept shifted to the right storage portion 123c, thereby maintaining H2'. Further, a vacuum may be formed in the right storage portion 123c according to circumstances.

In contrast, according to the present invention, referring to fig. 18 b, the air of the air bag of the left storage portion 123b moves to the right storage portion 123c through the air passage 128, and the air bag is formed in the right storage portion 123c. This has the same effect of maintaining the water level H1 in the left side storage unit and the water level H2 in the right side storage unit.

The air passage 128 is disposed at the upper end of the storage portion 123. The upper face of the water tub 120 may be formed in a plane parallel to the ground, and at this time, the air passage 128 may be formed at the upper face of the water tub 120.

When viewed from the side, the air passage 128 is disposed between the drain port 122 and the air hole 124.

The water supply pump 141 is a component for flowing water in the cleaning module 100. The water supply pump 141 pressurizes water inside the water tub 120 to press the heater 130. The inlet end of the water supply pump 141 is connected to the outlet end of the water tank hose 142, and the outlet end of the water supply pump 141 is connected to the heater hose 143.

The water tank hose 142 connects the water tub 120 and the water supply pump 141. The water tank hose 142 guides water stored in the water tub 120 to the water supply pump 141.

The heater hose 143 connects the water supply pump 141 and the heater 130. The heater hose 143 guides water pressurized by the water supply pump 141 to the heater 130.

The light emitting module 150 is a component for confirming the presence of foreign matter in front of the cleaning module 100 by illuminating the front of the cleaning module 100. The light emitting module 150 irradiates light to the floor in front of the cleaning module 100.

The light emitting module 150 may be disposed behind the air inlet 1112. By having this configuration, the light emitting module 150 can be cooled by the air flowing in from the air inlet 1112.

The light emitting module 150 may be disposed in plural along the front surface toward the left or right.

The light emitting module 150 may be composed of a light emitting member 151 and a diffusion plate 152.

The light emitting member 151 may be composed of a plurality of LEDs. The light emitting member 151 irradiates light to the front or lower portion.

The diffusion plate 152 is disposed in front of the light emitting member 151, and diffuses light irradiated from the light emitting member 151.

The wiper assembly 160 is a component for cleaning the floor surface with water or steam. The wipe assembly 160 receives steam from the heater 130 and cleans the floor wet by friction and steam.

The wipe assembly 160 may be comprised of wipes 161 and a wipe motor 162.

The wiper 161 is disposed on the lower surface of the lower cover 111. Specifically, a groove recessed upward is formed in the lower cover 111 to enable arrangement of the wiper 161, and the wiper 161 is provided in the lower cover 111 and at least a part thereof is inserted into the groove.

The wipe 161 may be circular when viewed from above. A rotation shaft extending vertically is formed in the center of the wiper 161. The wiper 161 can clean the floor surface by friction while rotating about the rotation axis.

The pair of wipes 161 may be disposed on the left and right sides about the rotation axis x.

The wiper motor 162 is a component for rotating the wiper 161. The wiper motor 162 is disposed above the wiper 161 and on the rotation shaft of the wiper 161.

The wiper motor 162 is provided on the upper surface of the lower cover 111.

The wipe motor 162 is configured to correspond to the number of wipes 161. The wiper motor 162 may be disposed in a pair on the left and right sides about the rotation axis x.

The wiper motor 162 is disposed laterally of the heater 130. The upper partition wall 1122 or the lower partition wall 1112 is disposed between the wiper motor 162 and the heater 130, thereby blocking heat transfer from the heater 130 to the wiper motor 162.

The shielding member 170 shields the front space in which the suction port 181 is provided and the rear space in which the wiper 161 is provided, thereby blocking diffusion of the vapor emitted from the wiper 161 to the suction port 181.

The dust flow path 180 is a flow path through which dust-containing air flows inside the cleaning module 100. An inlet end of the dust flow path 180 is connected to the suction port 181, and an outlet end of the dust flow path 180 is connected to the extension pipe 200.

The suction port 181 is a hole through which dust and air existing in the cleaning region flow into the cleaning module 180.

The suction port 181 is formed at the front end of the lower surface of the lower cover 111. The suction port 181 is disposed between the left side cloth 161 and the right side cloth 161.

The PCB190 is a substrate on which a control unit (not shown) for controlling the cleaning module 100 is disposed, and through which current can flow and communication lines can be disposed.

The PCB190 and components provided on the PCB190 have a property of being weak to heat, and can be cooled by air flowing in from the air inflow port 1111 and being discharged from the air discharge port 1121.

Hereinafter, the operation of the vacuum cleaner of the present invention configured as described above will be described.

The water tub 120 is disposed at an upper portion of the heater 130 and spaced apart from the heater 130. The heat emitted from the heater 130 has a rising characteristic, and since the water tub 120 is disposed at the upper portion of the heater 130, the heat is blocked from being emitted to the upper portion of the cleaning module 100. Further, since the water tub 120 is spaced apart from the heater 130, heat emitted from the heater 130 flows by convection to the water tub 120 and then is transferred by conduction, thereby having an advantage of not being scalded even if a user contacts the cleaning module 100.

The water tub 120 is formed to be recessed upward from a lower surface thereof, and includes a heater arrangement portion 126 into which at least a part of the heater 130 is inserted. Since the water tub 120 is disposed in the cleaning module 100, there is a possibility that the height of the cleaning module 100 increases, and the water tub is disposed in the heater disposition portion 126 by inserting at least a part of the heater 130, and there is an advantage that the narrow gap can be easily cleaned by further reducing the height of the cleaning module 100.

The water tub 120 includes a front storage 123a, a left storage 123b, and a right storage 123c, and the storage 123 is configured to surround three-directional sides of the heater 130. This allows heat emitted sideways to be absorbed in the storage portion 123, and thus has an advantage of not overheating peripheral electronic devices.

The water tub 120 has an air passage 128 connecting the left and right storage parts 123b and 123 c. Referring to fig. 18 b, even if the air hole 124 is formed only in the left storage portion 123b, the air of the air bag formed in the left storage portion 123b moves to the right storage portion 123c through the air passage 128, and the air bag is formed in the right storage portion 123c, so that the water level H1 of the left storage portion and the water level H2 of the right storage portion are aligned, and thus there is an advantage in that the center of gravity of the cleaning module 100 is always located at the center.

The first inclined surface 126a and the second inclined surface 126b of the heater arrangement portion 126 form a forward-downward inclined surface. Thus, dew condensed in the heater disposing part 126 does not fall down toward the heater 130, but flows down along the inclined surface toward the front end of the water tub 120. Similarly, dew condensed on the first inclined surface 126a and the second inclined surface 126b of the upper cover 112 also flows down along the inclined surfaces toward the front end of the upper cover 112. This has an advantage that the performance of the heater 130 can be maximized by preventing the occurrence of a problem that dew falls to the heater 130, resulting in unnecessary cooling of the heater 130.

While the preferred embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various modifications thereto without departing from the technical spirit or scope of the present invention as claimed in the claims, and such modifications should be individually understood.

Claims (17)

1. A vacuum cleaner, comprising:

a main body configured with an operation part for receiving the instruction and a main battery for supplying power; and

a cleaning module connected to the main body, for cleaning a cleaning area by generating steam;

the cleaning module includes:

a cleaning module cover connected to the main body to form an external appearance, and having a space formed therein;

a heater arranged in the cleaning module cover body and generating steam by water;

a water tub disposed at an upper portion of the heater to supply the water to the heater; and

and a heater arrangement portion formed to be recessed upward from a lower surface of the water tub, wherein at least a part of the heater is inserted and arranged in the heater arrangement portion.

2. The vacuum cleaner according to claim 1, wherein,

The heater arrangement section includes:

a first inclined surface extending rearward from one side of a lower surface of the water tub, the rear end being disposed at an upper position than the front end;

a second inclined surface extending rearward from a rear end of the first inclined surface, the rear end being disposed at an upper position than the front end; and

and a third inclined surface extending rearward from a rear end of the second inclined surface.

3. The vacuum cleaner according to claim 2, wherein,

the inclination of the second inclined surface is smaller than the inclination of the first inclined surface,

the inclination of the third inclined surface is smaller than the inclination of the second inclined surface.

4. The vacuum cleaner according to claim 1, wherein,

the water bucket includes:

a front storage part configured at the front end to form an internal space for storing the water, and extending to left and right sides;

a left storage part forming an inner space for storing the water, extending from a left end of the front storage part toward the rear along a left side surface of the water tub; and

and a right side storage part forming an internal space for storing the water, extending from a right side end of the front storage part toward the rear along a right side surface of the water tub.

5. The vacuum cleaner according to claim 4, wherein,

the front storage portion, the left storage portion, and the right storage portion are formed in a U-shape that is open rearward when viewed from above.

6. The vacuum cleaner according to claim 4, wherein,

the water tub includes a drain hole to drain water, the drain hole being formed at least one of a connection portion of the front storage portion and the left storage portion or a connection portion of the front storage portion and the right storage portion.

7. The vacuum cleaner according to claim 4, wherein,

the cleaning module comprises a main body, a cleaning module cover body and an extension pipe, wherein the rear end of the extension pipe is connected with the main body;

the water tub includes an extension pipe arrangement portion,

the extension pipe arrangement part is arranged at the right side of the left side storage part, the left side of the right side storage part and the rear of the heater arrangement part, is formed by being recessed from one side of the back surface of the water bucket to the front, and is formed in such a way that at least a part of the extension pipe can be inserted.

8. The vacuum cleaner according to claim 4, wherein,

the front end of at least one of the left side storage portion and the right side storage portion is disposed at a position lower than the rear end.

9. The vacuum cleaner according to claim 4, wherein,

the water tub may further include an air passage,

the air passage is disposed rearward of the front storage portion and connects the left side storage portion and the right side storage portion.

10. The vacuum cleaner according to claim 1, wherein,

the water bucket includes:

a water outlet formed at the front end for discharging water; and

an air hole formed at the rear end, through which external air is flowed in by negative pressure.

11. The vacuum cleaner of claim 10, wherein,

the air hole is disposed on the opposite side of the drain opening with respect to an imaginary line dividing the water tub from left to right, i.e., an x-axis, when viewed from above.

12. The vacuum cleaner according to claim 1, wherein,

the water bucket comprises a water supply port,

the water supply port is formed at both sides of the water tub and is capable of supplying water.

13. The vacuum cleaner according to claim 1, wherein,

the cleaning module cover body includes:

a lower cover body, the upper surface of which is provided with the heater; and

and an upper cover coupled to the lower cover and spaced apart from the heater at an upper portion thereof, and provided with the water tub at an upper face thereof.

14. The vacuum cleaner of claim 13, wherein,

a heat insulating coating surface is formed on an inner side surface of the upper cover body facing the heater.

15. A vacuum cleaner, comprising:

a main body configured with an operation part for receiving the instruction and a main battery for supplying power; and

a cleaning module connected to the main body, for cleaning a cleaning area by generating steam;

the cleaning module includes:

a cleaning module cover connected to the main body to form an external appearance, and having a space formed therein;

a heater arranged in the cleaning module cover body and generating steam by water; and

a water tub disposed at an upper portion of the heater to supply the water to the heater;

the water tub includes a storage part,

the storage part surrounds at least two sides of four-directional sides of the heater and stores the water.

16. The vacuum cleaner of claim 15, wherein,

the heater is configured to be tilted with respect to the ground,

the water tub includes an inclined surface disposed in parallel with an upper face of the heater.

17. The vacuum cleaner of claim 15, wherein,

the storage section includes:

a front storage part configured at the front of the water bucket and extending to the left and right sides;

A left storage part extending rearward along a left side surface of the water tub from a left end of the front storage part;

and a right side storage part extending from a right side end of the front storage part toward the rear along a right side surface of the water bucket.