WO2010114332A2

WO2010114332A2 - Clothes dryer having a steam generator using a hot air heater

Info

Publication number: WO2010114332A2
Application number: PCT/KR2010/002041
Authority: WO
Inventors: 송성호; 진용철; 김민지; 배상훈
Original assignee: (주)엘지전자
Priority date: 2009-04-02
Filing date: 2010-04-02
Publication date: 2010-10-07
Also published as: WO2010114332A3; CN102362028A; EP2415926A2; US20120005915A1

Abstract

A dryer is disclosed which has a steam generator which is highly energy efficient and inexpensive to produce. The present invention provides a dryer comprising: a drum for receiving laundry, which is rotatably mounted within a main body; a duct for guiding air being supplied to the drum; a heater assembly which is provided within the duct and heats the air being supplied to the drum; and a steam generator which is located adjacent to the heater assembly and uses the heat generated by the heater assembly to generate steam to be supplied to the drum.

Description

Clothes dryer with steam generator using hot air heater

The present invention relates to a dryer, and more particularly, to a dryer having a steam generator for generating steam by using the heat of a hot air heater for heating air into the drum of the dryer.

In general, a dryer is an apparatus for drying laundry by putting laundry in a state where washing is completed and dehydration is completed into the drum of the dryer, and supplying hot air into the drum to evaporate moisture of the laundry.

In the construction of the dryer, the dryer includes a drum inside the dryer into which laundry is put, a driving motor for driving the drum, a blowing fan for blowing air into the drum, and a heating means for heating the air introduced into the drum. Is done. The heating means may be a resistance heater that generates heat using electrical resistance or a burner that generates heat by burning gas.

The air exiting the drum of the dryer has moisture in the laundry inside the drum, and the air becomes hot and humid. At this time, the dryer can be classified according to the method of treating the high temperature and high humidity air, and the hot and humid air is circulated without being discharged to the outside of the dryer to allow heat exchange with the outside air in the condenser so that the moisture contained in the high temperature and high humidity air. It is divided into a condensation type dryer for condensing and an exhaust type dryer for directly discharging the air of a high temperature and high humidity passing through the drum to the outside.

By the way, the laundry is completed and a lot of wrinkles are present in the laundry put into the dryer, these wrinkles are not removed even in the drying process, there is an inconvenience that you need to iron again after drying in the dryer. In addition, there are problems such as wrinkles and odors or germs propagation during storage of clothes in the intestinal tract as well as the wrinkles after washing. In order to solve this problem, a steam generator is installed in the clothes dryer to spray steam on the clothes being dried inside the drum to remove wrinkles and odors and to sterilize them.

In general, a steam generator mounted on a dryer has its own heater therein, separate from a heater that produces hot air supplied to the drum. More specifically, the steam generator has a container for receiving a predetermined amount of water, and a heater provided in the container for heating the received water. The water in the steam generator is heated and steamed by the heating of the heater, and the generated steam is supplied into the drum. The steam generator also has a reservoir for temporarily storing water to be supplied to the container.

The steam generator of the conventional dryer should directly heat the supplied water by using a heater provided separately to make steam. However, due to steam generation, if the amount of water stored inside the steam generator is reduced and the heater is exposed to the outside of the water, the heater may be overheated. Therefore, for safety reasons, the heater should always be submerged in water. That is, the water stored in the container of the steam generator should always maintain a minimum level to submerge the heater. For this reason, the steam generator has a water level sensor which detects that the stored water is reduced and the water level is lowered to reach the minimum level, and when the minimum level is reached, water is automatically supplied to the container of the steam generator from the reservoir.

Therefore, since the conventional steam generator has to be equipped with a separate member, such as a water level sensor for detecting the water level, the structure and manufacturing process is complicated. In addition, since the heater for steam generation is installed separately in the heater for hot air generation, the structure and manufacturing process is similarly complicated, and more energy is required for the operation of the dryer.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a dryer having a simple steam generator, which can be easily manufactured, and does not have a separate heater for steam generation. It is to provide a dryer that improves energy efficiency by generating steam using a hot air heater to heat the.

The present invention for the above purposes, the drum rotatably mounted inside the body; A duct for guiding air supplied to the drum; A heater assembly provided in the duct for heating air supplied to the drum; And a steam generator for generating steam to be supplied to the drum by using heat generated by the heater assembly.

The steam generator is a metal tube bent in a zigzag adjacent to the heater assembly, can receive radiant heat and convection heat from the heater assembly, the steam generator is disposed around the air outlet of the heater assembly, The steam generator may be formed to surround the heater assembly.

Dryer of the present invention is connected to the steam generator one end of the steam hose for guiding the steam discharged from the steam generator; And a nozzle provided at the other end of the steam hose and spraying steam to the drum.

The steam hose is installed in contact with the duct, the steam generator is made of an aluminum tube or a copper tube.

In addition, the steam generator of the present invention may be composed of a first generator disposed above the heater assembly and a second generator disposed below the heater assembly.

The steam generator may include a third generator connected to the first generator and the second generator and disposed adjacent to a side of the heater assembly, wherein the third generator is configured to provide a heater assembly to which heated air is discharged. It may be arranged adjacent to the side.

The steam generator may further include an auxiliary generator disposed in the duct to be connected to the steam generator and reheating steam discharged from the steam generator by using heated air in the duct.

The auxiliary generator extends along the duct to an outlet of the duct communicating with the drum, and a nozzle is mounted at the end of the auxiliary generator to inject steam from the outlet into the drum, and the auxiliary generator extends long along the duct. It can be made of a metal tube.

In another aspect, the present invention, the steam hose is connected to the steam generator for guiding the steam discharged from the steam generator; And a nozzle provided at an end of the steam hose and injecting steam into the drum, wherein the nozzle may be installed in a rear supporter or the duct rotatably supporting the rear end of the drum.

The auxiliary generator extends along the duct to the outlet of the duct in communication with the drum, and a nozzle is mounted at the end of the auxiliary generator to inject steam from the outlet into the drum.

In addition, the present invention, the storage tank for storing the water supplied to the steam generator; And a water supply hose for guiding the water in the reservoir to the steam generator, wherein the storage tank is formed of a cartridge detachably installed in a drawer installed on the front upper side of the main body, and opened and closed. It further comprises a pump or valve for.

In the present invention, since the steam generator can generate steam without a separate heater for steam generation, the structure is simplified and manufacturing is easy due to the reduction of the components required for the manufacturing process. In addition, the energy required is reduced because steam is generated by using the heat of the heater assembly inside the dryer.

1 is a perspective view showing a dryer having a steam generator according to the present invention,

2 is a perspective view showing a first embodiment of a steam generator,

3 is a partial perspective view showing in more detail the steam generator according to the first embodiment,

4 is a partial perspective view showing a modification of the steam generator according to the first embodiment,

5 is a perspective view showing a second embodiment of the steam generator,

6 is a partial perspective view showing in more detail the steam generator according to the second embodiment.

An example of a dryer according to the present invention is described in detail below with reference to the accompanying drawings.

1 is a perspective view showing a dryer having a steam generator according to the present invention, Figure 2 is a perspective view showing a first embodiment of the steam generator. 3 is a partial perspective view showing in more detail the steam generator according to the first embodiment.

Referring to FIG. 1, the clothes dryer 100 according to the present invention includes a main cover including a front cover 101, a side cover 102, a rear cover (not shown), and a top plate (not shown) forming an external appearance. It has a drum 120 installed in the main body. The drum 120 is rotatably installed in the main body and accommodates laundry to be dried. In addition, the clothes dryer 100 is mounted on the front of the front cover 101, the door 104 for opening and closing the opening of the drum 120, and is provided on the upper side of the front cover 101, drying The control panel 103 is provided with various buttons for inputting a condition. The drum 120 has a hollow cylinder shape with open front and rear ends. That is, openings are formed in front and rear portions of the drum 120, respectively. The drum 120 is supported by a front supporter (not shown) installed in the front part of the main body and a rear supporter 122 (see FIG. 2) installed in the rear part of the main body. More specifically, the front supporter is formed with an opening in communication with the opening of the front end of the drum 120, the rim is formed on the outer peripheral portion of the opening. The inner circumferential surface of the rim of the front supporter rotatably supports the outer circumferential surface of the front end portion of the drum 120. The opening of the front end of the drum 120 communicates with the outside of the main body through the opening of the front supporter, and is opened and closed by the door 104. The user may open the door 104 and put laundry into the drum 120 through openings in the front supporter and the front end of the drum 120. In addition, the rear supporter 122 includes a recess, and the inner circumferential surface of the recess rotatably supports the outer circumferential surface of the rear end of the drum 120. Thus, the front supporter and the rear supporter 122 are stationary, while the drum 120 is relatively rotatably supported by these stationary supporters.

In addition, although the internal structure of the dryer is not shown in detail in the drawing, the clothes dryer has a blower fan through which the air inside the drum 120 circulates. It is provided with a heat exchanger to condense the moisture contained in the circulating air. The air discharged from the drum 120 is introduced into the drum 120 again by the blowing fan. At this time, a duct is provided to guide the air circulating so that the air discharged from the drum flows back into the drum. As described above, since the front supporter and the rear supporter 122 are fixed, the suction part and the discharge part of the duct cannot be connected to the rotating drum 120, and thus the fixed front supporter and the rear supporter 122 ) May be connected to communicate with the inside of the drum (120). In addition, a heater assembly 200 for heating the air introduced into the drum 120 to make hot air is provided in the duct. The duct may include an intermediate duct 140 and a rear duct 130, as shown in FIG. The intermediate duct 140 may be provided with various accessories such as a heat exchanger and a blower fan as well as the heater assembly 200. FIG. 2 shows only a part of the intermediate duct 140 which receives only the heater assembly 200, and similarly to the heater assembly 200, a heat exchanger and a blowing fan may also be installed in the intermediate duct 140. The rear duct 130 is connected to the intermediate duct 140 and is connected to the rear supporter 122 so as to communicate with the drum 120 again. More specifically, the rear supporter 122 has an opening 123 in communication with the rear end of the open drum 120, the end of the rear duct 130 is connected to the opening 123. Therefore, the rear duct 130 is supplied by the heat exchanger in the intermediate duct 140 and the air heated by the heater assembly 200 again into the drum 120 through the opening 123. In addition, the front duct is connected to the front of the intermediate duct 140, although not shown, and sucks air in the drum 120 having a relatively high humidity and a low temperature by drying the laundry. The heater assembly 200 may be formed of a resistance coil heater using electric resistance heat, or may be formed of a burner that generates heat by burning gas. Hereinafter, a case of using a resistance coil heater will be described as an example, but it is obvious that an embodiment of the present invention can be applied to a burner. In addition, while the above-described duct structure and the arrangement of the heat exchanger and heater assembly have been described based on the condensation type dryer, the dryer of the present invention may have the arrangement of the duct structure according to the exhaust type dryer and thus related parts. In practice, the condensation dryer and the exhaust dryer are distinguished from each other only in the manner of circulating the air, so it is understood that the steam generator and related configurations described below can be applied to the exhaust dryer without further modification.

In FIG. 2, the steam generator according to the first embodiment of the present invention is simplified and simplified together with other related components. In this regard, a drawer 110 is provided to be pulled out from the front cover 101 of the dryer body, and the drawer 110 is detachably provided with a cartridge 113 corresponding to a reservoir for storing water. Is mounted. The drawer 110 is installed above the front cover 101 of the dryer, and is installed to be pulled out toward the front of the main body. Preferably, the drawer 110 is installed on the side of the control panel 103 at the top of the front cover. The cartridge 113 is provided with a handle 114, and by using the handle 114, the user can easily detach or mount the cartridge 113 from the drawn drawer 110. In addition, a heater assembly 200 for heating the air flowing into the drum is provided in the intermediate duct 140 located below the clothes dryer. In addition, a steam generator 230 is provided inside the intermediate duct 140 adjacent to the heater assembly 200, and receives heat from the heater assembly to convert water into steam. The cartridge 113 and the steam generator 230 are connected to each other by a water supply hose 116, and the pump 115 is provided at the water supply hose 116. The water stored in the cartridge 113 is supplied to the steam generator 250 through the water supply hose 116 to be changed to steam, and the pump 115 opens and closes the water supply hose 116 to steam the cartridge. Adjust the amount of water supplied to the generator. That is, when the pump 115 opens the water supply hose 116 and supplies water to the steam generator 230 at the point where steam generation is required, the supplied water is changed to steam in the steam generator.

In the present embodiment, an example in which a pump is used to adjust the amount of water supplied to the steam generator 230 has been described. However, the present invention is not limited thereto, and the water supply hose 116 is provided with a valve to open and close the hose. The amount of water supplied to the steam generator may be controlled. And, as shown in Figure 2, in the present embodiment, the cartridge is provided on the upper left side as seen from the front of the dryer, the steam generator is provided on the lower right, by using the height difference between the cartridge and the steam generator, The water to be supplied can also be controlled by a valve.

In FIG. 3, the steam generator 230 according to the first embodiment of the present invention is shown in more detail with the heater assembly 200. First, the heater assembly 200 basically includes a heating unit, and the heating unit includes a support 201 and a resistance coil 202 wound around the support 201. The support 201 is made of an insulating material against electricity and heat, and the resistance coil 202 generates heat using electrical resistance. Such a plurality of heating units are gathered to form one heater assembly 200. The heater assembly 200 may further have a support plate 203 to which the heating units are fitted, as shown in FIG. 5, and the heating units may be more stably fixed in the duct by the support plate 203. . And, the inside of the duct 140 is provided with a steam generator 230 for receiving the heat of the heater assembly 200 to change the water into steam. The steam generator 230 is a long metal tube having a predetermined diameter and is located on one side of the heater assembly 200. In the present embodiment, the steam generator 230 is disposed in a zigzag form on the upper side of the heater assembly 200. However, the shape in which the steam generator is disposed is not limited thereto, and may be disposed in a zigzag shape on the upper side and both side surfaces of the heater assembly 200. In addition, it is advantageous in terms of heat transfer that the steam generator made of the metal tube is made of copper tube.

In addition, both ends of the steam generator 230 are provided with an inlet 231 and an outlet 232 protruding to the outside of the duct. The inlet 231 is a passage through which water is introduced into the steam generator from the cartridge 113, and the outlet 232 is a passage through which steam generated by the steam generator is discharged. A water supply hose 116 is connected to the inlet, and water stored in the cartridge 113 flows into the steam generator, and a steam hose 117 is connected to the outlet 232 to discharge steam generated from the steam generator. It goes out. The steam hose 117 is preferably made of a metal pipe, considering the temperature of the steam flowing therein. The steam generator 230 receives heat generated by the heater assembly indirectly by convection through air or directly through radiation to heat the water stored therein and convert the water into steam. As mentioned above, the steam generator 230 is a small diameter metal tube, so the amount of water flowing is small. In addition, since the steam generator 230 is arranged in a zigzag, it has a considerably large heat transfer area. Thus, a small amount of water flowing in the steam generator 230 can be quickly heated and converted to steam. Steam generators are preferably made of copper tubes or aluminum tubes to increase the heat transfer rate.

A nozzle 118 is provided at the end of the steam hose 117 to inject steam to the drum 120. As shown in FIG. 2, the nozzle 118 may be installed at a rear supporter 122 supporting the drum 120 at a rear end thereof. And, the steam flowing inside the steam hose 117 may be condensed on the inner wall of the steam hose 117 when the temperature is lowered. In order to prevent this, as shown in FIG. 2, the steam hose 117 may be installed near the outer wall of the rear duct 130, which is a passage through which hot air heated by a heater flows into the drum. Preferably, the steam hose 117 is preferably attached to the rear duct 130 to receive high temperature heat from the rear duct 130. In addition, in order to prevent internal condensation by receiving heat from the rear duct, the steam hose is preferably made of a metal pipe having a good heat transfer rate. In addition, the nozzle 118 provided at the end of the steam hose 117 is installed in the rear supporter 122 supporting the rear of the dryer drum 120, through the open rear end of the drum 120 in the nozzle Steam is injected into the drum.

4 shows another embodiment in which the nozzle 118 is installed. In FIG. 4, the steam hose 117 is installed in close contact with the rear duct 130 to prevent condensation of steam passing through the steam hose 117. In addition, the nozzle 118 is installed above the rear duct 130, and the nozzle is installed near the inlet, ie, the opening 123, through which hot air flows into the drum. With this configuration, the steam hose 117 and the nozzle 118 can continue to receive heat from the rear duct 130, and thus prevent the steam inside the steam hose from condensing during the flow. have.

5 is a perspective view showing a second embodiment of the steam generator, Figure 6 is a partial perspective view showing in more detail the steam generator according to the second embodiment. A second embodiment of the steam generator will be described in detail with reference to these drawings.

As shown in FIGS. 3 and 6, in the intermediate duct 140, air is first introduced to the front of the heater assembly 200, and the air of the heater assembly 200 is passed through the heater assembly 200. It is heated sequentially by the heating units. Thereafter, the heated air is discharged from the rear of the heater assembly 200. In consideration of this heating process, the air introduced in the unheated state absorbs a lot of heat from the front portion thereof compared with the rear portion of the heater assembly 200. Thus, the rear portion of the heater assembly 200 relatively retains more heat that can be used for heating. On the other hand, since the heating of the air at the rear part of the heater assembly 200 is actually completed, the air at the rear part has a significantly higher temperature than the air at the front part. Thus, the air at the rear has more thermal energy to heat other objects than the air at the front. For this reason, the rear part of the heater assembly 200, that is, the air outlet part, has a high ability and heater assembly to supply heat energy indirectly to the

steam generators

230 and 330 by convection using air having a high temperature around it. Both have a high ability to supply thermal energy directly by thermal energy radiation from 200. Accordingly, the steam generator 330 according to the second embodiment is configured to be disposed only around the rear portion of the heater assembly 200, that is, around the air discharge portion. The steam generator 330 according to the second embodiment may generate steam efficiently and efficiently by using the high heating capacity of the rear part (discharge part) of the heater assembly. In addition, compared to the steam generator 220 of the first embodiment extending throughout the heater assembly 200, the steam generator 330 has a simpler and easier to manufacture structure, thereby reducing the manufacturing cost Productivity can be increased.

In addition, the steam generator 330 may be configured to surround the heater assembly 200 to have a higher heating efficiency. More specifically, as shown in FIG. 6, the steam generator 330 basically includes a first generator 331 disposed above the rear portion (ie, the discharge portion) of the heater assembly 200. Have That is, the first generator 331 is disposed spaced apart from the upper surface of the rear portion (discharge portion) by a predetermined interval. In addition, the steam generator 330 may have a second generator 332 disposed below the rear portion (discharge portion) of the heater assembly 200. In other words, the second generator 332 is disposed spaced apart from the lower surface of the rear part (discharge part) at a predetermined interval. The first and

second generators

331 and 332 can greatly increase the heating efficiency by using both the upper and lower rear portions of the heater assembly having the largest heating capability. Furthermore, the steam generator 330 may have a third generator 333 which connects the first generator and the

second generators

331 and 332 and is disposed adjacent to the side of the rear part of the heater assembly 200. . The third generator 333 may be disposed adjacent to the left side or the right side of the rear portion of the heater assembly 200. However, as shown in the drawing, the third generator 333 is disposed adjacent to the rear side (that is, the rear end) of the heater assembly where the highest temperature air is directly discharged, that is, to increase the heating efficiency. More advantageous. The steam generator 330, that is, the first to

third generators

331, 332, 333, is made of a metal tube bent in a zigzag parallel to the surface of the heater assembly 200 facing in the same manner as in the first embodiment described above. Accordingly, when water is supplied through the inlet 335, the water is immediately converted into steam while passing through the first to third generators 331-333 and discharged through the outlet 336.

In view of the above description, the first and

third generators

331, 332, and 333 surround the portion having the highest heating capacity of the heater assembly 200 while increasing the heat transfer area. For this reason, the heating efficiency in the stem generator 330 according to the second embodiment is maximized.

Like the steam generator 220 of the first embodiment, the outlet 336 protrudes out of the duct, and the steam hose 117 together with the nozzle 118 may be connected to the outlet 336. The steam may be supplied into the drum 120 through the steam hose 117 and the nozzle 118. However, as described above, since the steam hose 117 is exposed to the outside of the duct, steam is condensed by the temperature decrease, and thus the quantity and quality of the steam may be reduced. Thus, as shown in FIG. 5, the steam generator 220 according to the second embodiment may further include an auxiliary generator 334. The auxiliary generator 334 is connected to the steam generator 320, precisely the outlet 336, and is disposed in the duct, ie the rear duct 130. More specifically, the auxiliary generator 334 extends away from the heater assembly 200 along the flow direction of the heated air discharged from the heater assembly 200. That is, the auxiliary generator 334 further extends along the rear duct 130 from the steam generator 330, and also toward the drum 210, an outlet of the duct that is in communication with the drum 210. Extending continuously. The auxiliary generator 334 may be made of a metal tube like the first to third generators, and may extend in a straight line in the drawing, but may be bent in a zigzag to increase the heat transfer area. Steam discharged from the steam generator 330 is reheated by the hot air flowing in the duct while passing through the auxiliary generator 334, and does not condense. Therefore, the amount and quality of steam actually supplied to the drum 120 by this auxiliary generator 334 can be greatly increased.

On the other hand, as shown in Figure 5, the end of the auxiliary generator 334 may extend through the rear duct 130 to the outside, the outlet 337 for discharging steam may be formed in the end have. In this case, like the steam generator 220 of the first embodiment, the steam hose 117 may be connected, and the nozzle 118 is provided at the end of the steam hose 117. The nozzle 118 is installed in the rear supporter 122 rotatably supporting the rear end of the drum 120 as shown in FIG. 2 or the rear duct adjacent to the opening 123 of the rear supporter. More preferably, 130 may be installed at a portion communicating with the drum of the rear duct 130. On the other hand, unlike the end of the auxiliary generator 334 does not protrude out of the duct unlike shown in Figure 5, the outlet of the duct that the auxiliary generator 334 itself is in communication with the drum along the rear duct 130, That is, it may extend to the opening 123. In this case, a nozzle 118 may be mounted at the end of the auxiliary generator 334 to inject steam from the discharge port into the drum.

In addition, similar to the steam generator 220 of the first embodiment, the inlet 335 is the water supply hose so that the water flows into the steam generator from the cartridge 113 detachably installed in the drawer (110) 116). In addition, the steam generator 330 may likewise be made of an aluminum tube or a copper tube.

Hereinafter, a drying process of the dryer having the above-described steam generator will be described.

First, after the user inputs laundry to the drum 120, the steam drying course is input through the input unit of the control panel, and a drying process is started. The heater is heated by the heater assembly 230 into the dryer drum 120. Hot and dry air enters and heats the clothes to dry them. Then, when it is time to inject steam into the drum during or after drying is complete, the pump 115 is operated so that the water stored in the cartridge 113 through the water supply hose 116 the steam generator (230,330) Is supplied. The supplied water is converted into steam in a short moment in the steam generators 220 and 230 by receiving heat from the heater assembly 200. The steam generated by the steam generator is injected into the drum 120 through the steam hose 117 and the nozzle 118. In this case, the time when the steam is to be injected, the user may be controlled by manually operating the control panel, or the time when the steam is injected according to the drying course selected by the user may be automatically determined by the dryer controller. Then, after the dryer goes through a plurality of drying processes, if the water stored in the cartridge 113 is consumed, the user may pull out the drawer 110 and pour water into the cartridge 113 to replenish. Each of the embodiments of the present invention does not require a separate heater for steam generation by generating steam by using the heat of the heater assembly 200 as described above.

Claims

A drum rotatably mounted inside the body;

A duct for guiding air supplied to the drum;

A heater assembly provided in the duct for heating air supplied to the drum; And

And a steam generator for generating steam to be supplied to the drum by using heat generated by the heater assembly.
The method of claim 1,

The steam generator is a metal tube bent in a zigzag adjacent to the heater assembly, the dryer characterized in that the radiant heat and convection heat is received from the heater assembly.
The method of claim 2,

And the steam generator is arranged around an air outlet of the heater assembly.
The method of claim 3, wherein

And the steam generator is formed to surround the heater assembly.
The method of claim 1,

A steam hose having one end connected to the steam generator to guide steam discharged from the steam generator; And a nozzle which is provided at the other end of the steam hose and injects steam to the drum.
The method of claim 5,

And the steam hose is installed while contacting the duct.
The method of claim 1,

The steam generator is characterized in that the dryer made of an aluminum tube or copper tube.
The method of claim 1,

And the steam generator comprises a first generator disposed above the top of the heater assembly and a second generator disposed below the bottom of the heater assembly.
The method of claim 8,

And the steam generator comprises a third generator connecting the first generator and the second generator and disposed adjacent to the side of the heater assembly.
The method of claim 9,

And the third generator is disposed adjacent the side of the heater assembly from which the heated air is discharged.
The method of claim 8,

And the steam generator is disposed in the duct so as to be connected to the steam generator, and further comprises an auxiliary generator for reheating steam discharged from the steam generator by using the heated air in the duct.
The method of claim 11,

And the auxiliary generator extends along the duct to an outlet of the duct communicating with the drum, and a nozzle is mounted at the end of the auxiliary generator to inject steam from the outlet into the drum.
The method of claim 11,

And the auxiliary generator comprises a metal tube extending along the duct.
The method of claim 8,

A steam hose connected to the steam generator for guiding steam discharged from the steam generator; And a nozzle provided at an end of the steam hose and spraying steam into the drum.
The method of claim 14,

And the nozzle is installed in the rear supporter or the duct rotatably supporting the rear end of the drum.
The method of claim 14,

And the auxiliary generator extends along the duct to an outlet of the duct communicating with the drum, and a nozzle is mounted at the end of the auxiliary generator to inject steam from the outlet into the drum.
The method of claim 1,

A storage tank for storing water supplied to the steam generator; And

And a water supply hose for guiding water in the reservoir to the steam generator.
The method of claim 17,

The reservoir is a dryer, characterized in that consisting of a cartridge detachably installed in the drawer installed retractable on the upper front of the main body.
The method of claim 17,

Dryer further comprises a pump or valve for opening and closing the water supply hose.
The method of claim 8,

The steam generator is characterized in that the dryer made of an aluminum tube or copper tube.