KR101684966B1 - Steam generator and Wahsing machine having the same - Google Patents

Abstract

The present invention relates to a steam generator for preventing water from being supplied to clothes together with steam by the injection pressure of steam injected from a steam generator, and a washing machine using the steam generator, in addition to minimizing residual water inside the steam generator will be.

Description

Technical Field [0001] The present invention relates to a steam generator and a washing machine using the steam generator,

The present invention relates to a steam generator and a washing machine using the steam generator.

Generally, a washing machine is a collective term for household appliances including a device for separating contaminants adhered to the laundry through the action of washing water and detergent supplied, and a device for supplying hot air to the wet laundry to dry the laundry.

Meanwhile, recent washing machines are characterized in that they can sterilize laundry, remove odors, and remove wrinkles by using a steam generator.

The conventional steam generator includes a storage means for storing water to generate steam by heating water supplied from outside the steam generator using a heater, and a heater provided in the storage means and in direct contact with the stored water .

Such a steam generator drives the heater only when the heater is completely immersed in water in order to ensure safety such as prevention of overheating of the heater. That is, in the conventional steam generator, even if a certain amount of water remains in the storage means, if the heater is not immersed in water, the operation of the heater is stopped and then re-watered.

Accordingly, in the conventional steam generator and the washing machine using the steam generator, when the heater is exposed to the water, the steam generator (heater driving) is stopped and the re-watering .

That is, although the conventional steam generator and the washing machine using the steam generator are located inside the steam generator, since the heater is driven after re-watering, there is a problem in that all the water supplied through the initial water supply can not be supplied to the steam.

In addition, the conventional steam generator and the washing machine using the same have a problem in that the ON / OFF period of the heater is shortened and the running time of the course for supplying steam is prolonged .

In addition, the conventional steam generator and the washing machine using the same have been limited to include a minimum level detecting means for determining whether the heater is immersed in water.

Also, in the conventional steam generator and the washing machine using the same, steam and water are supplied to the clothes by the pressure of the steam, which lowers the washing efficiency.

The present invention is directed to a steam generator capable of minimizing residual water in a steam generator and a washing machine using the same.

It is another object of the present invention to provide a steam generator for preventing water from being supplied to clothes together with steam by the injection pressure of steam, and a washing apparatus using the same.

According to an aspect of the present invention, there is provided a steam generator comprising: a lower case in which water is stored; a heating device that heats the lower case; a steam discharging duct provided in the upper portion of the lower case, An upper wall extending from the lower case toward the steam discharge passage and preventing water from flowing into the steam discharge passage; a steam supply unit provided at an upper end of the outer wall to supply steam to the steam generator; A steam generator including a flow path is provided.

In this case, the outer wall flow path may be provided at a position higher than a maximum water level of water stored in the lower case.

In addition, the outer wall part may be provided so that the heat provided from the heating device to the lower case can be transmitted.

The upper case may further include an outer wall cover covering the upper outer peripheral surface of the outer wall.

The upper case may further include an outer wall cover in which the upper end of the outer wall is received.

The steam supply passage may further include an inner wall portion provided inside the outer wall portion to prevent water from entering the inner wall portion, and an inner wall flow passage provided at an upper end of the inner wall portion to receive steam.

In this case, it is preferable that the outer wall flow path and the inner wall flow path are provided to be staggered.

One end of the steam discharge passage may be inserted into the upper end of the inner wall portion.

The upper case may further include an outer wall cover in which the upper end of the outer wall is received.

The upper case may further include an outer wall flow path extending in the base direction, the outer wall flow path being spaced apart from the outer wall flow path by a predetermined distance.

According to another aspect of the present invention, there is provided a cabinet comprising: a cabinet forming an outer appearance; a garment accommodating portion accommodated in the cabinet to accommodate clothes; and a steam generator for supplying steam to the garment accommodating portion, The apparatus includes a base, a lower case having a sidewall extending upwardly from the base to store water, a heating device for heating the lower case, and a steam generator installed at an upper portion of the lower case, An outer wall portion extending from the base in the direction of the steam discharge flow passage to prevent water from flowing into the steam discharging flow passage, and an outer wall flow passage provided at an upper end of the outer wall portion to receive steam, And a steam supply passage connected to the steam supply passage.

In this case, the steam supply passage may further include an inner wall portion provided inside the outer wall portion to prevent water from entering the inner wall portion, and an inner wall flow passage provided at an upper end of the inner wall portion to receive steam.

Preferably, the outer wall flow path and the inner wall flow path are provided so as to be offset from each other.

In addition, the inner wall and the outer wall may be provided so that the heat provided from the heating device to the lower case can be transmitted.

Further, the upper case may further include an outer wall cover to receive the upper end of the outer wall, and one end of the steam discharging passage may be inserted into the upper end of the inner wall.

The steam generating device and the washing device using the same according to the present invention can minimize the residual water inside the steam generating device.

In addition, the steam generating device and the washing device using the same according to the present invention can prevent the water from being supplied to the clothes together with the steam by the spraying pressure of the steam.

1 is a conceptual diagram of a washing machine provided with a steam generator.
2 is an exploded perspective view of the steam generator.
3 is a perspective view of the lower case;
4 is a conceptual view of the steam supply passage.
5 is a perspective view of the upper case.
6 is an assembled cross-sectional view of the upper case and the lower case.
7 is a view showing a state in which the steam supply passage and the oil passage cover are engaged.
8 is a view showing another embodiment of the engaging portion.

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

Unless defined otherwise, all terms herein are the same as the general meaning of the term as understood by one of ordinary skill in the art to which this invention belongs, and if the terms used herein conflict with the general meaning of the term Are as defined herein.

It is to be understood that the present invention is not limited to the details of the embodiments described below, .

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

1 is a conceptual view of a washing machine provided with a steam generating device, and the entire configuration of the washing machine will be described below.

The washing machine W includes a cabinet 100 forming an outer appearance and a garment receiving unit 200 provided inside the cabinet to receive clothes.

The clothes receptacle may include a tub 213 disposed in the cabinet for storing wash water and a drum 211 rotatably installed in the tub.

Since the tub is provided for washing clothing using wash water, it is not an essential configuration if a washing apparatus that does not use wash water is implemented.

That is, in the case of implementing a washing apparatus for sterilizing or smelling garments using steam or for implementing a washing apparatus for drying wet clothes using hot air, the clothes receiving unit may be provided only with a drum.

Hereinafter, for convenience of explanation, a washing machine provided with a tub will be used as a reference.

The tub 213 is provided at one side with an opening through which clothes are inserted, and the drum 211 is provided with a drum opening corresponding to the opening of the tub. In this case, the opening of the tub is openable and closable by the door 400.

Accordingly, the user can insert or withdraw the clothes into the drum by opening the door.

The spring 213 and the damper 313 are supported by the tub support in the cabinet to minimize the transmission of vibration transmitted to the tub to the cabinet when the drum rotates. May be an example of a tub support.

A driving unit 600 for rotating the drum may be provided on a rear surface of the tub. The driving unit may include a stator 611 provided on the back surface of the tub, a shaft 615 connected to the rear surface of the drum, and a rotor 613 rotating the shaft by electromagnetic action with the stator.

In addition, the washing machine W may further include a washing water supply part 500 for supplying washing water required for washing.

The washing water supply unit may include a supply hose 511 connecting the water supply source and the tub 213 and the supply hose 511 may be connected to the tub via the detergent box 513. [

The detergent box is configured to supply the detergent required for washing, and if the supply hose is connected to the tub via the detergent box, the detergent and the washing water necessary for washing can be supplied without a separate apparatus or control.

In this case, the supply hose is provided in the form of a corrugated pipe (not shown) so that even when the detergent box is drawn out, the detergent box 513 And may not be separated.

Further, the washing apparatus may further include a drain unit 800 for discharging the washing water stored in the tub 213. [ Preferably, the drainage section is provided with a drain pump and a drainage hose communicating with the turbine.

In addition, the washing machine of the present invention includes a steam generator 700 for sterilizing clothes, deodorizing clothes, and heating laundry water. The steam generator is a device for supplying steam generated by heating water supplied from the outside to the tub. The conventional steam generator includes a storage part for storing water and a heater provided in the storage part for directly contacting water. .

However, in the conventional steam generator, since the heater directly heats the water, the safety of the steam generator may be problematic if there is no water in the storage portion or if water of a lower level than the heater is left in the storage portion .

Therefore, the conventional steam generator requires a minimum level detecting means for determining whether the heater is immersed in water, and the minimum level detecting means stops the operation of the heater when it is determined that the heater is not immersed in water.

That is, in the conventional steam generator, since the remainder is present inside the steam generator, the heater is driven after re-supplying the water, so that the water supplied through the initial water supply can not be supplied to the steam.

In addition, since the conventional steam generator and the washing machine using the same require the heater to be driven after rewiring even when there is residual water, the ON / OFF cycle of the heater is inevitably shortened. On / off of the steam generator frequently turns on the steam There is a problem that the progress time of the course to be performed is increased.

Accordingly, the steam generator of the present invention provides a steam generator designed to overcome the problems of the conventional steam generator, and the overall structure of the steam generator will be described with reference to FIG.

The steam generator 700 may include a lower case 710 and an upper case 730.

The upper case 730 includes a water supply pipe 311 for supplying water to the lower case and steam for discharging steam generated from the lower case 710. [ And a discharge tube (7313).

The upper case 730 and the lower case 710 are coupled through coupling parts 716 and 735, and the coupling relationship of the upper and lower cases will be described later.

3 is a perspective view of the lower case 710. Hereinafter, a specific structure of the lower case will be described.

The lower case 710 includes a base 711 forming a bottom surface, and side walls 714 extending upward from the base. Therefore, the water flowing into the water supply pipe 7311 of the upper case is stored by the base and the side wall.

In this case, it is preferable that the base 711 is provided with a heating device 712, and the heating device 712 is provided in the form of an electrothermal wire so as not to directly contact water stored in the lower case .

That is, the steam generator 700 does not directly heat the water contained in the base and the sidewall by a heating device, but rather a method of converting water stored in the base and the sidewall to steam by heating the base and the sidewall 712 to be.

Accordingly, since the steam generator according to the present invention is not in direct contact with water, it is not necessary to determine whether the heating device is immersed in water as in the conventional steam generator, All of the steam can be converted into steam, so that the problem of residual water in the steam generator can be solved.

However, in this case, it is preferable that the lower case is provided with a heat conduction material.

The lower case 710 may further include a temperature sensing unit 713 to sense the failure of the heating device 712 and the overheating of the heating device to ensure the safety of the steam generating device.

In this case, the temperature sensing unit 713 may be provided on the base 711.

Further, the lower case 710 may further include a steam supply passage 715 for preventing water from being discharged to the steam discharge pipe 7313 (see FIG. 2) provided in the upper case.

The steam supply passage 715 includes an outer wall portion 7151 extending from the base 711 toward the steam discharge pipe 7313 and an outer wall flow passage C provided at an upper end of the outer wall portion 7151 .

The outer wall portion 7151 may extend upward from the bottom surface of the base 711 to prevent water stored in the lower case from flowing into a space formed by the outer wall portion.

Meanwhile, the outer wall flow path C may be provided in the form of a hole passing through the outer wall part 7151, or may be formed in a shape in which a part of an upper end of the outer wall part is cut as described in the drawing.

However, the outer wall flow path C should be formed at a position higher than the highest water level of water supplied to the lower case. So that only the steam generated in the lower case is discharged to the steam discharge pipe 7313.

That is, when the pressure of the steam discharged through the steam discharge pipe 7313 is high, water stored inside the lower case can be discharged together with the steam through the steam discharge pipe. The outer wall portion 7151 and the outer wall flow passage C The water stored in the lower case is prevented from being discharged to the steam discharge pipe 7313 together with the steam.

Meanwhile, the 'highest water level' (L, see FIG. 4) means the highest water level of water that can be stored in the lower case, and it will be set at the time of manufacturing the steam generator according to the capacity of the steam generator.

The outer wall 7151 may be formed of a material capable of receiving heat from the heating device 712 to the base 711.

In this case, the outer wall portion may be integrally formed with the base, and an aluminum die casting method may be used.

This is because not only the base and the side wall of the lower case but also the outer wall 7151 form a contact surface in contact with the water stored in the lower case, so that there is an effect of converting the stored water into steam more quickly.

Meanwhile, the steam supply passage 715 may further include an inner wall 7153 in a space formed by the outer wall 7151.

In order to prevent the water from being discharged to the steam discharge pipe when the water flows into the outer wall flow path although the outer wall flow path C is provided at a position higher than the 'highest water level' of the lower case.

Referring to FIG. 4, the inner wall 7153 extends upward from the base 711 so as to communicate with the steam discharge pipe 7313, and the outer wall 7153 7151).

In this case, it is preferable that the inner wall part flow path D is provided at the upper end of the inner wall part 7153, but the part is offset from the outer wall part flow path C. So that only steam and steam can flow into the outer wall flow path (C), the steam can flow into the inner wall flow path (D).

When steam and water flow into the outer wall flow path C, the steam can be transferred to the steam discharge pipe 7313 only through the flow indicated by the arrow in FIG. 4 (a).

Therefore, even if water flows into the outer wall flow path C together with the steam, the steam is discharged from the steam discharge pipe 7313 ).

In this case, the inner wall part 7153 may be made of a material capable of receiving the heat supplied to the base 711 from the heating device 712. This is to convert the water stored in the space between the outer wall part and the inner wall part into steam and discharge it.

4 (a) shows a structure in which the outer wall portion 7151 is connected to the side wall 714. However, as long as the above-described effect can be achieved, the shape of the outer wall portion is not limited to that shown in Figs. 4 (b) C). ≪ / RTI >

4 (b) and 4 (c), the outer wall portion 7151 may extend upward from the base and be separated from the side wall 714. [

In this case, even if the outer wall flow path C and the inner wall flow path D are formed so as not to face each other (staggered), steam can be supplied only to the steam discharge pipe 7313 .

5 is a perspective view of the upper case 730, and the structure of the upper case will be described below.

The upper case 730 includes a top cover 731 having a water supply pipe 7311 and a steam discharge pipe 7313 and a side cover 732 extending from the top cover 731 and surrounding the side wall of the lower case ).

That is, the lower case 710 and the upper case 730 are coupled to each other by contacting the side cover 732 with the base 711. In this case, the side wall 714 is received in the side cover 732 .

The steam generator may further include an insulation unit for preventing or minimizing the transfer of heat from the lower case to the upper case when the upper case and the lower case are coupled.

The insulating portion may include an air gap G (see FIG. 6) provided between the side wall and the side cover, and a sealing portion 734 provided between the top cover 731 and the side wall 714.

The air gap G (see FIG. 6) is a means for preventing or minimizing the heat of the lower case to the upper case, and the side gap 732 and the side wall 714 may be spaced apart from each other by a predetermined distance .

Accordingly, it is possible to convert the water stored in the lower case into steam in a short period of time by minimizing the transfer of heat from the heating device 712 to the lower case 710 to the upper case (minimizing heat loss) It is also possible to prevent malfunction of the sensing means 737 and 738.

The sealing portion 734 is provided between the top cover 731 and the side wall 714 to prevent the heat of the lower case from being transmitted to the upper case and also to prevent leakage of water and steam stored in the lower case . A detailed description of the sealing portion will be given later with a description of the engaging portion.

On the other hand, the water supply pipe 7311 provided in the top cover is connected to a water supply source, and water to be supplied to the lower case flows. The water supply pipe 7311 may be connected to a connection pipe separately provided from the supply hose 510 as shown in FIG. 1, but it may be provided to supply water by branching the supply hose 510.

The steam discharge pipe 7313 is a pipe through which steam generated in the lower case is discharged. The discharged steam is supplied to the clothes through a connection pipe provided between the clothes receiving portion 200 and the steam discharge pipe 7313.

Furthermore, the top cover 730 may further include a flow path cover 733 (see FIG. 5).

The flow path cover 733 includes an outer wall cover 7331 in which the outer wall portion 7151 is received and an inner wall coupling portion 7333 inserted in the inner wall portion, do.

The outer wall cover 7331 is provided so as to correspond to the shape of the upper end of the outer wall portion so that the upper end of the outer wall portion 7151 can be accommodated and can seal the upper end of the outer wall portion to prevent leakage of steam flowing into the outer wall portion. desirable.

However, the shape of the outer wall cover may be modified into various shapes as long as the above-mentioned effects can be realized.

That is, the outer wall cover may be provided so as to be in contact with the outer peripheral surface of the upper end of the outer wall instead of contacting the upper and outer peripheral surfaces of the outer wall.

The end of the steam discharge pipe 7313 may protrude from the top cover 731 and may be inserted into the inner wall part 7153.

Furthermore, the flow path cover 733 may further include an outer wall flow path cover 7335.

The outer wall portion flow path cover 7335 is provided to be spaced apart from the outer wall flow path C by a predetermined distance so as to prevent water from flowing into the outer wall flow path C when water stored in the lower case is sloped It is means.

That is, the water stored in the lower case is boiled by the heat transmitted from the heating device to the base, the side wall, and the steam supply channel, and the water level stored in the lower case during the boiling of the water will continuously fluctuate.

In this process, water can flow into the outer wall flow path (C), and the outer wall flow path cover (7335) blocks water flowing in the direction of the outer wall flow path (C)

7 shows the coupling between the steam supply passage and the oil passage cover. The coupling relationship between the outer wall cover 7331 and the outer wall portion 7151, the coupling relationship between the inner wall portion 7153 and the inner wall coupling portion 7333, The position of the outer wall side channel cover 7335 can be realized as shown in FIG.

Hereinafter, with reference to FIG. 2, the remaining configuration and the coupling process of the upper and lower cases will be described.

A water level sensing means 737 may be further provided on the top cover 731.

The water level sensing means 737 is a means for supplying an appropriate amount of water to the lower case, and the water level sensing means shown in FIG. 2 may be provided as an electrode sensor having a pair of electrodes.

In this case, it is preferable that the pair of electrodes are provided so as to be in contact with water when water is supplied to the highest level of the lower case.

Conventionally, a steam generator using an electrode sensor was required to include a common electrode, a minimum level sensing electrode, and a maximum level sensing electrode.

As described above, in the conventional steam generator, the heater is in direct contact with water, and in order to ensure the safety of the steam generator, the minimum level sensing electrode must be provided so that the heater can detect the position where the heater is not exposed to the outside of the water .

However, according to the present invention, since the heating device 712 is provided on the base and is not in contact with water, there is no need to provide the minimum level sensing electrode provided in the conventional steam generating device.

That is, it suffices that the level detecting means provided in the steam generating apparatus of the present invention is provided to detect only the highest level that can be supplied to the steam generating apparatus.

The top cover 731 may further include temperature sensing means 738 for sensing the temperature of water. Detecting the temperature of the water stored in the steam generator can be utilized as a data collection means necessary for controlling the steam generator such as determining whether the steam generator is malfunctioning.

Hereinafter, the engaging portions 735 and 716 for engaging the upper case 730 and the lower case 710 will be described.

The coupling portion may be provided on the upper flange 735 of the side cover 732 and the lower flange 716 of the side wall 714, respectively.

In this case, the upper flange and the lower flange are preferably provided with holes 7351 and 7161 through which the fastening member S can pass, respectively.

The side cover 732 may further include a strength reinforcing rib 736.

In the steam generator of the present invention, since the heating device heats the lower case and the water stored by the heated lower case is converted into steam, the thermal deformation of each case may be accompanied.

Accordingly, if there is thermal deformation of the upper case or the lower case, the fastening member S will be subjected to a large shearing stress. In order to prevent breakage due to shearing stress, a fastening member having a high shear strength, Number of flanges and bottom flanges).

However, in the present steam generator, since the strength reinforcing ribs 736 are provided at the lower end of the side cover to minimize thermal deformation of the upper case, the number of engaging portions can be minimized even if a fastening member having a high shearing strength is not used .

However, since the thermal deformation of the upper case can be minimized only if the strength reinforcing rib is provided along the outer circumferential surface of the side cover, it is not necessary to limit the position of the strength reinforcing rib to the lower end of the side cover.

2 shows a case where four upper and lower flanges are provided in the upper case and the lower case, but this is merely an example and is not for limiting the number of the upper flange and the lower flange.

However, when four upper flanges are provided as shown in the drawing, the strength reinforcing ribs may be provided between the upper flange and the upper flange in terms of manufacturing time and cost.

Hereinafter, the insulator will be described in order to prevent or minimize the transfer of heat from the lower case to the upper case when the upper case and the lower case are coupled.

As described above, the insulating portion may be provided as an air gap, and the insulating portion may further include a sealing portion.

The sealing portion 734 minimizes the transfer of the heat of the lower case to the upper case, and also prevents the steam or water in the steam generating device from leaking to the outside of the case.

It is preferable that the sealing portion 734 is provided in a space formed by the top cover 731 and the side wall 714 and is provided at a position higher than the position where the coupling portions 716 and 735 are provided desirable.

The sealing portion of the conventional steam generator is provided at a position where the coupling portion is formed or at a position lower than the water level stored in the steam generator.

That is, in the conventional steam generator, water is stored in a space formed by the upper case and the lower case without the side wall 714, and the sealing portion is provided along a portion where the upper case and the lower case are in contact with each other.

Therefore, in the conventional steam generator, the sealing portion is provided at a position lower than the maximum water level of the water stored in the steam generator, thereby possibly causing water leakage.

However, if a sealing part is provided at a position higher than the highest water level of water stored in the lower case like the sealing part 734 provided in the present invention, the possibility that water or steam leaks out of the steam generating device can be basically eliminated .

Hereinafter, another embodiment of the coupling portion will be described with reference to FIG.

In the above-described embodiment, the coupling portion is provided with the upper flange 735 and the lower flange 716, but it may be provided with the coupling portion as shown in FIG.

That is, the coupling portion according to the present embodiment may be provided with a first concavo-convex portion 739 provided in the side cover 732 and a second concavo-convex portion 717 provided in the base 711.

The first concave-convex part may be provided along an end of the side cover 732, and the second concave-convex part may be provided at an upper end of the base 711 so as to be engaged with the first concave part.

Furthermore, the engaging portion of the present embodiment may further include a fixing portion 750 for fixing the first concave-convex portion and the second concave-convex portion.

In this case, it is preferable that both ends of the fixing portion 750 are coupled through a fixing member B such as a screw to prevent separation of the upper case and the lower case.

That is, the fixing portion prevents the upper and lower cases from being separated from each other and minimizes thermal deformation of the upper and lower cases.

Hereinafter, the coupling relationship between the steam generator and the cabinet will be described with reference to FIG.

The steam generator 700 according to the present invention is a system in which water stored in the lower case is converted into steam by heating the lower case 710 by the heating device 712.

Therefore, it is preferable that the steam generator 700 is provided between the cabinet 100 and the garment accommodating part 200 so as not to be in contact with the cabinet and the garment accommodating part.

That is, the outer circumferential surface of the steam generating device is spaced apart from the inner circumferential surface of the cabinet 100 by a predetermined distance from the outer circumferential surface of the tub 213 (in the case of the washing device for drying only) desirable.

This is to prevent direct contact between the cabinet and the clothes receiving portion and the steam generating device even if the surface temperature of the steam generating device 700 increases, thereby preventing the heat of the steam generating device from being transmitted to the cabinet or the clothes receiving portion.

The above-described effect can be realized by a bracket (not shown) for fixing the position of the steam generator.

That is, if the bracket is provided between the steam generating device and the upper surface of the cabinet (or between the steam generating device and the back surface of the cabinet), the heat generated by the steam generating device will not be transmitted to the cabinet as well as the clothes accommodating portion. You will be able to prevent unexpected accidents.

In this case, the bracket may be provided separately from the cabinet or the steam generator, but may be integrally provided in a frame (not shown) provided for fixing the cabinet or integrated with the steam generator.

However, in any case, the bracket is preferably connected to the upper case of the steam generator.

This is because the upper case maintains a lower temperature than the lower case during operation of the steam generator.

The present invention may be embodied in various forms without departing from the scope of the invention. Accordingly, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Steam generator: 700 Lower case: 710 Base: 711
Heating device: 712 Temperature sensing part: 713 Side wall: 715
Steam supply flow path: 715 outer wall part: 7151 inner wall part: 7153
Lower flange: 716 Upper case: 730 Top cover: 731
Water supply pipe: 7311 Steam discharge pipe: 7313 Side cover: 732
Euro cover: 733 Outer wall cover: 7331 Inner wall cover: 7333
Outer wall Euro cover: 7335 Sealing part: 734 Upper flange: 735
Strengthening ribs: 736 Level sensing means: 737 Temperature sensing means: 738

Claims (15)

A lower case in which water is stored;
A heating device for heating the lower case;
An upper case provided on an upper portion of the lower case, the upper case having a steam discharge passage through which steam generated in the lower case is discharged;
An outer wall portion extending from the lower case in the direction of the steam discharge path to prevent water from being introduced into the outer case, an outer wall flow passage provided at an upper end of the outer wall portion to receive steam, And a steam supply passage provided at the upper end of the inner wall portion to prevent steam from flowing into the steam discharge duct,
Wherein the outer wall flow path and the inner wall flow path are staggered. The method according to claim 1,
Wherein the outer wall flow path is provided at a position higher than a maximum water level of water stored in the lower case. The method according to claim 1,
Wherein the outer wall is provided so that heat provided from the heating device to the lower case can be transmitted. The method according to claim 1,
Wherein the upper case further includes an outer wall cover that contacts an upper outer circumferential surface of the outer wall. The method according to claim 1,
Wherein the upper case further includes an outer wall cover to receive an upper end of the outer wall. delete delete The method according to claim 1,
And one end of the steam discharge path is inserted into the upper end of the inner wall part. 9. The method of claim 8,
Wherein the upper case further includes an outer wall cover to receive an upper end of the outer wall. 10. The method of claim 9,
The upper case
Further comprising an outer wall flow path extending in the base direction, the outer wall flow path being spaced apart from the outer wall flow path by a predetermined distance. A cabinet for forming an outer appearance, a garment accommodating portion provided inside the cabinet for accommodating clothes, and a steam generator for supplying steam to the garment accommodating portion,
The steam generator
A lower case having a base and a sidewall extending upward from the base to store water;
A heating device for heating the lower case;
An upper case provided on an upper portion of the lower case, the upper case having a steam discharge passage through which steam generated in the lower case is discharged;
An outer wall portion extending from the base in the direction of the steam discharge passage to prevent water from being introduced into the outer wall portion, an outer wall flow passage provided at an upper end of the outer wall portion to receive steam, And a steam supply passage provided at an upper end of the inner wall portion and having an inner wall flow passage through which the steam flows,
Wherein the outer wall flow path and the inner wall flow path are staggered. delete delete 12. The method of claim 11,
Wherein the inner wall part and the outer wall part are provided so that heat provided from the heating device to the lower case can be transmitted. 12. The method of claim 11,
The upper case further includes an outer wall cover in which an upper end of the outer wall is received,
And one end of the steam discharge path is inserted into the upper end of the inner wall part.

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